Student bullying a teacher is a phenomenon given with the least attention and focus since the perpetrators were seen as the academe itself. This descriptive study aims to determine the understanding and behavior of students in a higher education institution towards teacher bullying. The study surveyed 105 conveniently selected respondents from the three (3) different departments of a local community college in Olongapo City who were currently enrolled within the school year of 2017-2018. A draft questionnaire was (...) created and submitted for validity, reliability, and consistency checks from different experts. The data collected were then processed using SPSS 22. The following results were generated: the respondent was a female, 18-20 years of age, first-year level and studying under the College of Business and Accountancy. The respondents moderately understood the idea of teacher bullying by students and their behavior towards teacher bullying by students is slightly inappropriate. Significant findings were found when the variables were grouped according to the year level and the department. There was also a low direct relationship that was observed between the understanding, year level and department. Based on the results, pertinent institutional policies and programs were recommended and suggested. (shrink)

Individuals with high self-concept will likely have high life satisfaction, they easily get adjusted to life, and they communicate their feeling more appropriately. However, it was not certain whether self-concept would decline or improve as individuals age, or whether self-concept would vary between genders and ethnic groups. To prove, a study was carried out to compare the self-concept of college students in an Asian context. The inquiry utilized the cross-sectional design in finding out significant differences in the self-concept of (...) participants in terms of age, gender, and ethnicity. A 22-item questionnaire was adapted and administered to 222 Bachelor of Public Administration and Bachelor of Science in Business Administration students from the satellite campus of Bukidnon State University in the Philippines. Initially, a sample was randomly drawn from the population. During the actual data collection, the researchers had difficulty getting the responses from the randomly selected individuals due to internet connection and it was done amidst a pandemic. Instead, it took all responses from those who were available, have access to the internet, and could accomplish the google forms. The data were analyzed using Mean, Standard Deviation, T-test for independent sample, ANOVA and Post Hoc test. The results revealed that college students at the locale have a high level of self-concept in self-fulfilment, emotional adjustment, and honesty. Yet, they only had a moderate level of self-concept in autonomy. Further, there were significant differences in college students’ autonomy and honesty in terms of age and gender. Furthermore, there were significant differences in their emotional adjustment and self-fulfilment as to their ethnicity. The results have implications for instruction, administration, guidance services, and future research. (shrink)

The study aimed to identify the reality of technical education in Palestine. The analytical descriptive method was used in the study. A questionnaire which consisted of 41 paragraphs was distributed randomly to the technical colleges in Gaza Strip. Random sample of (275) employees of these colleges were used, and the response rate was (74.5%). The results showed a high degree of approval for the dimensions of technical education with a relative weight of 76.07%. The ranking and relative weight was as (...) follows: Technical education institutions: 79.51%, graduates of technical education 75.75%, Labor market and local community 72.96%. The researchers propose a number of recommendations, the most important of which is: the need to pay attention to technical education in line with the National Strategic Plan for Higher Education by moving towards technical education. The importance of offering special courses in all technical education programs in these colleges. The researchers urged more future studies that address the same variables as the current study and apply them to other sectors. (shrink)

Given the extremely tight job market for professional philosophers, more Ph.Ds. are beginning to consider jobs at the community college level. There are good reasons for considering this avenue: if you enjoy teaching, the job focus is on teaching, and you evaluation and tenure depend primarily on your performance in the classroom; if the prospect of working with a very diverse student body, both in terms of background and skill set, appeals to you; if the location in which (...) you live is large part of job satisfaction, there is a far greater ability to get a job in an urban area via the community college track. However, to get a job at a community college, one thing is prized above all: teaching experience. Yet this is where the newly minted graduate student may well be at a disadvantage in the community college hiring process. In this article I seek to address the issue of how to become a strong candidate for a community college position right out of graduate school. (shrink)

Caritas in Veritate leaves us with a question, Does Benedict XVI see politics as a practice or as an institution? How one answers this question has tremendous implications for how one should address the inequalities of contemporary society and the increasing globalization of the world. Alasdair MacIntyre, for instance, would consider politics to be primarily a practice with a good internal to its activities. This good consists in rational deliberation with others about the common good. If one considers politics an (...) institution, however, as seems to be the case with Jacques Maritain, then one pays less attention to the common good and more attention to the mechanics of the political institution. The difference in understanding goes a long way toward how one conceives of, determines, and achieves the common good, a central task for Catholic social teaching. It also prefigures whether and how one can justify self-sacrifice for the common good, demanded of police officers and soldiers, for instance, as well as whether and how one prioritizes the practices of a given political community. Caritas in Veritate (CIV) brings to the forefront issues of self-sacrifice and prioritization of practices at the global level. This paper shall address the position Benedict XVI lays out on globalization with reference to a global politics through the lens of the common good and the distinction between practice and institution. (shrink)

In this study, the idea of the local African community as a social structure ensuring the security of its members is presented. An understanding of the concept of security is first briefly discussed, followed by the meaning of the concept of the local African community. The chapter also makes an a priori distinction between what one can call “moderate” and “radical” types of communal life and two case studies exemplifying them are presented. The chapter aims to (...) analyze the trade off, in terms of provision of security, including economic security, by local communities, for the shaping of a democratic political culture in Sub-Saharan Africa. Most importantly, however, this chapter also highlights the rationality that underpins the seemingly low-quality democratic political activities of members of local African communities. (shrink)

Abstract: For the last two decades, land and land-related problems are more complicated ever before. Especially the proliferation of large-scale rural land investments and the vulnerability of the local communities in land abundant developing countries instigated researchers, human right activists, and international and regional organizations to proposed governance guidelines, principles, and codes of conduct for large-scale land investments. To identify policy flaws on the protection of local community rights under the governance process of large-scale rural land investment (...) in Amhara National Regional State Ethiopia the commonalities of those international and regional accepted governance guiding lines and principles are taken as a point of reference to examine the land governance policies of the region through the approach of document analysis. The result shows all legislation with regard to the governance of large-scale rural land investment is flawed throughout the land policy reform processes and identified five ways in which the de jure land-related rights of the local communities are compromised and exacerbated the vulnerability of their livelihoods. (shrink)

Despite centuries of colonization in the Philippines, the traditional Filipino healing system has survived. However, as modern education has continued to spread and Western medicine has grown in influence, traditional healing practices have been pushed to the margins and labeled as unscientific or mere superstition. This also suggests that unrecorded information may be lost forever. For future generations to appreciate this rich cultural heritage, cultural mapping of traditional healers in a local community is necessary. Thus, the researcher explored, (...) identified, documented, and analyzed the cultural profile of the traditional healers in a local community. Specifically, he studied the (1) background information, (2) description of the intangible cultural heritage, (3) stories/narratives associated with traditional healing, (4) significance of the practice, (5) assessment of the practice, and (6) references/supporting documentation of the traditional healers. The study was conducted in one of the local communities in the province of Quezon. The research participants were selected using inclusion criteria, and 11 traditional healers served as the key informants of the study. This study also employed qualitative research through cultural mapping, and pertinent data were obtained using participant observation, documentation, and interview guides. Qualitative content analysis was used in analyzing the gathered data. The findings revealed that the traditional healers have diverse background information, reflected in the element types, the geographical location and range of the element, and the related domains of the intangible cultural heritage. Likewise, the description of the intangible cultural heritage gave a wide array of descriptions of the history of practice, occasion/season, processes, and procedures involved, beliefs associated, settings, aims, social functions, and cultural meaning, culture bearer/s and practitioner/s of the element, mode of transmission, list of significant tangible movable heritage used associated with the element and list of significant flora/fauna used associated with the element. Meanwhile, spiritual guides and supernatural claims, healing severe cases, and being accused of malpractice or maltreatment were some of the stories/narratives associated with the element. In addition, traditional healing has historical, aesthetic, scientific, social, socio-economic, socio-political, and spiritual significance. Moreover, the assessment of practice exposed the condition/status of traditional healing, which is in danger because of the elderliness of the traditional healers and because no one is accepting the knowledge and practices. Furthermore, the constraint, threat, issue, or challenge experienced by the traditional healers is making false accusations against them. Nevertheless, traditional healers have identified several safeguarding measures in their traditional healing practice. These are transmission through informal education, identification, documentation, research, promotion, enhancement, and revitalization. Finally, sacred texts, books, pictures, prayers, and saints are the references or supporting documentation used in traditional healing. Based on the findings and conclusions, it is recommended to utilize the two research outputs: “Kaalaman at Kasanayan: Cultural Profile of Traditional Healers,” a booklet, and “Tanging Healing,” a documentary film about traditional healing for the preservation of local heritage, community development, and heritage education. (shrink)

The present research aims to describe the impact of socio-cultural factors, especially the attitude of the surrounding community, regarding the existence of a PT Semen Tonasa factory in Bungoro-Pangkep. Besides, it also aims to describe the impact of the socio-economy, especially the livelihoods and cultural background of the community, as well as provide a comparison of the past, and present types of businesses that can support the community to survive. An endogenous plant is the result of a (...) long process combined with other social phenomena. The data collection methods used included in-depth interviews with selected informants, observations, and group discussions. The findings reinforce a situation or condition of the impact of the livelihood of life, and public attitudes towards the construction of integrated plants. (shrink)

According to Warriner (1969) a simple way of defining land reforms is to name it “the redistribution of property or rights in land for the benefit of the landless, tenants and farm labourers”. Land reforms are mainly characterised by the government’s change of laws, regulations or customs regarding land ownership. Land reforms deal with the government in power distributing property which is in most times agricultural land. In some instances it also involves the distribution of land from the more powerful (...) or wealthy group of people such as nobles and bourgeoisie and giving potions of the land to the less powerful in society especially during the start of the post-colonial error in most countries in Southern Africa. During the pre-colonial period, land or pieces of land belonged to different ethnic groups, clans and lineages but now in the post-colonial land reform programs were to introduce individual ownership of land. There are many reasons why the government (both colonial and post-colonial) embark on land reforms and some of the factors influencing them include political reasons such promoting communism or socialism, social reasons such as separating the blacks from the whites and creating social stratification and economic reasons such as facilitating private investments and raising the country’s economic growth of the agricultural sector just but to mention a few reasons. Though some of the government’s reasons to embark on land reforms appear to be noble, local communities refuse these land reforms since they create social stratifications, at times increase poverty, destroy the matrilineal societies and are more political in nature rather than a means to better the people’s lives especially during the colonial error. The essay below will vividly portray why the government embarks on land reform programs and why local people resist these reforms using examples from both colonial and post-colonial Southern African countries. (shrink)

This study investigated adolescent students’ nutritional knowledge in boarding schools and potential strategies for improving their nutritional status in the Ido-Osi Local Government Area of Ekiti State, Nigeria. The researcher used purposive sampling to select three government colleges and private college boarding schools in the Ido-Osi Local Government area. The sample consisted of 80 boarding house students. Data was collected using a questionnaire, and the statistical analysis involved frequency and percentages. The findings revealed that a good percentage (...) of the boarding school students have good nutritional knowledge. The majority of students believed that both the Federal and State Government, as well as schools, parents, and communities, should work together to improve the food system in order to combat nutritional challenges in boarding schools. Thus, the study recommends that the Government, parents, schools, and communities collaborate to address any nutrition issues among adolescent students in boarding schools. This could involve initiatives such as establishing school gardens and providing support to local farmers, among other strategies. Future research should aim to enhance our understanding of adolescent students' nutritional knowledge in boarding schools and develop effective strategies to improve their nutritional status. This will contribute to the overall health and well-being of these students during their critical developmental years. (shrink)

English is essential as an effective communication tool in both local and international contexts. In addition to being used in schools, it is also a teaching tool in colleges and universities. ESL (English as a Second Language) classes are now required in all educational institutions and can't be skipped. When learning a second language, anyone must be physically, mentally, and emotionally involved to communicate and understand what is being said. This systematic review employed qualitative documentary research and adopted content (...) analysis. Following a random selection of reliable and legitimate sources, purposive sampling was used to conduct a content analysis of the selected papers. For this systematic review, sources from EBSCO, Google Scholar, Scopus, Web of Science, and ScienceDirect were used. The findings reveal that English-language obstacles in this article include English learners' writing, speaking, listening, reading, translation, and interpretation skills. The conclusion focuses on English learning obstacles and their improvement through teaching methods and educational technology adoption. The recommendation is to look into quantitative and qualitative research for further study. (shrink)

GAMETOGÊNESE -/- Emanuel Isaque Cordeiro da Silva Instituto Agronômico de Pernambuco Departamento de Zootecnia – UFRPE Embrapa Semiárido -/- • _____OBJETIVO -/- Os estudantes bem informados, estão a buscando conhecimento a todo momento. O estudante de Veterinária e Zootecnia, sabe que a Reprodução é uma área de primordial importância para sua carreira. Logo, o conhecimento da mesma torna-se indispensável. No primeiro trabalho da série fisiologia reprodutiva dos animais domésticos, foi abordado de forma clara, didática e objetiva os mecanismos de diferenciação (...) sexual dos embriões em desenvolvimento, quais os genes envolvidos nesse processo e tudo mais. Nesse segundo trabalho, a abordagem será teórica, mas também clara, sobre a formação primordial dos gametas femininos e masculinos, através da ovogênese nas fêmeas e a espermatogênese nos machos. Esse trabalho visa levar a importância do processo de formação dos gametas e a produção hormonal das gônadas, bem como o entendimento sobre as interações com o eixo hipotálamo-hipofisário. -/- •____INTRODUÇÃO -/- A reprodução sexual é um processo mediante a qual dois organismos da mesma espécie unem seu material genético para dar lugar a um organismo fixo com combinação única de genes; para isso, cada organismo produz células que contém a metade do material genético característico da espécie. Essas células haploides (1n) são denominadas gametas; ao combinar-se um gameta masculino com um feminino produz-se uma célula diploide (2n) (zigoto ou ovo) a partir da qual se forma o embrião. A grande maioria das espécies com reprodução sexual são anisogâmicas, o que significa que produzem dois tipos de gametas diferentes: os gametas masculinos são microscópios, móveis e produzem-se em grande quantidade, enquanto que os femininos são grandes, imóveis e produzem-se em menor quantidade. O tipo de gameta que um indivíduo produz é o que define seu sexo; sobre os animais o macho é o indivíduo que produz grandes quantidades de espermatozoides e a fêmea produz uma menor quantidade de óvulos, enquanto que nas plantas as gônadas masculinas são as produtoras pólen e as femininas produzem oosferas. Os gametas são diferentes do resto das células do organismo, as quais se chamam células somáticas; essas últimas são diploides porque contém dois pares de cromossomos, um par herdado do pai do indivíduo e o outro da mãe. As células somáticas, ademais, se dividem por mitose, ao qual os cromossomos se duplicam antes de cada divisão celular e cada uma das células filhas recebe um complemento diploide idêntico dos cromossomos, logo todas as células somáticas de um indivíduo possuem o mesmo material genético, embora cada tipo celular expresse diferentes combinações de genes. Em contraponto, os gametas são células haploides porque possuem somente um par de cromossomos e a metade do material genético característico da espécie. Cada um dos cromossomos em um gameta é resultado da recombinação dos genes contidos nos cromossomos paterno e materno do indivíduo que originam o gameta, e cada um destes possuem uma combinação única de genes. Os gametas se formam a partir das células germinais, que são células que em sua origem são diploides e elas de “comprometem” a manter-se como uma linha celular especial que em determinado momento sofrerá o processo de meiose para dar origem aos gametas haploides, sejam óvulos ou espermatozoides segundo o sexo do animal. Como descrito no trabalho sobre a diferenciação sexual, as células germinativas primordiais originam-se no epiblasto do embrião, e migram desde o saco vitelino até colonizar as cristas gonodais, onde, por sua vez, proliferam-se e se organizam junto com as células somáticas da gônada primitiva para formar o testículo ou o ovário. As células germinais masculinas e femininas tem a mesma origem embrionária. As gônadas indiferenciadas em um embrião possuem três tipos celulares: as células que dão origem aos gametas (ovogonia ou espermatogonia), as precursoras de células que nutrem os gametas em desenvolvimento (células da granulosa no ovário; células de Sertoli no testículo) e as precursoras de células que secretam hormônios sexuais (células da teca no ovário; células de Leydig no testículo). As células germinais são as únicas estruturas do organismo que têm a capacidade de dividir-se por meiose sofrendo uma redução no número de seus cromossomos, sendo responsável pela transmissão da carga genética aos descendentes. Em contraste, as células somáticas somente se dividem por mitose. A formação dos gametas compreende fases sequenciais de mitose, meiose e pós-meiose. Esses processos são altamente organizados e necessitam de um preciso e bem coordenado programa de expressão genética. Uma das características importantes da gametogênese é a redução cromossômica, que através da meiose, reduz pela metade o número de cromossomos e produz células distintas entre si, devido a trocas de material genético entre os pares de cromossomos provenientes do pai e da mãe, o que ocorre no processo de “crossing over” durante a primeira fase da meiose. A gametogênese é o processo mediante o qual as células germinais de cada sexo se multiplicam, dividem e diferenciam até formar os gametas. No caso da formação dos gametas masculinos o processo recebe o nome específico de espermatogênese, e para os gametas femininos é denominado como ovogênese. Embora os dois processos alcancem o objetivo comum de produção das células haploides, por onde compartilham algumas características, existem diferenças marcadas entre eles devido a necessidade de produzir um número muito distinto de gametas, de tamanho diferente, e com características de motilidade também distintas. -/- •___ESPERMATOGÊNESE -/- A espermatogênese é o processo mediante o qual se produz os gametas masculinos denominados espermatozoides. Durante a vida fetal as células germinais e as células somáticas do testículo em formação organizam-se em túbulos seminíferos que se derivam dos cordões sexuais primários e conformam a maior parte da medula do testículo. Na etapa fetal cada tubo seminífero é delimitado por uma membrana basal, recoberta na parte interior pelas células precursoras das células de Sertoli (um tipo de células somáticas). No exterior do túbulo localizam-se as células precursoras das células de Leydig ou intersticiais (figura 1), que também são células somáticas. Entre a membrana basal e as células de Sertoli encontram-se algumas células germinais denominadas espermatogonias de reserva A0 (denominadas gonócitos) que serão o único tipo de células germinais presentes no testículo enquanto o animal não alcançar a puberdade. As células de Sertoli estabelecem na região basal uniões oclusoras entre si, formando parte da barreira hemato-testicular. As espermatogonias A0 localizam-se por dentro da membrana basal do túbulo seminífero, embora fora da barreira hemato-testicular. Figura 1: fase neonatal. Nota-se a grande infiltração de tecido intersticial em quase 50% da seção originando que os túbulos sejam pequenos e redondos em sua maioria. O citoplasma e núcleo das células pré-Leydig são notadas claramente por essa ser uma espécie suína onde o tecido intersticial está claramente diferenciado. Hematoxilina-eosina (X 220.5). Fonte: Embrapa. -/- O número de células de Sertoli no testículo depende da influência do hormônio folículo estimulante (FSH) presente durante a vida fetal e as primeiras etapas de vida pós-natal. A população de células de Sertoli ao chegar a puberdade se manterá fixa durante o resto da vida do animal; existe uma relação positiva entre o tamanho e a população de células de Sertoli e a capacidade de produção de espermatozoides do testículo. As células de Sertoli são as únicas células somáticas que estão no epitélio seminífero, e sua função é a nutrição, sustentação e controle endócrino das células germinais. As células de Sertoli participam ativamente no processo de liberação dos espermatozoides para a luz do túbulo. Nesse momento, as células de Sertoli realizam a fagocitose de parte do citoplasma do espermatozoide dos chamados corpos residuais. As células de Sertoli também fagocitam as células germinais que se degeneram no curso normal da espermatogênese. Essas células ainda sintetizam grande quantidade de proteínas, como por exemplo as proteínas ABP (androgen hinding protein), que transportam andrógenos para todo o aparelho reprodutivo, transferrinas, que transportam ferro para a respiração celular das células germinais e também às inibinas, que regulam a liberação de FSH pela hipófise, através de um sistema de retroalimentação (feedback) negativa (figura 2). Figura 2: epitélio seminífero, células de Sertoli (flecha) (400 X). Fonte: Embrapa. -/- Antes da puberdade dos túbulos seminíferos observam-se ao corte como estruturas de diâmetro pequeno, sem luz, e conformados unicamente pelas células de Sertoli e espermatogonias de reserva e rodeados por abundante tecido intersticial, ao que estão presentes as células precursoras das células de Leydig. Ainda antes da puberdade, a diferenciação celular manifesta-se primeiro pela presença de espermatócitos primários, os quais se degeneram em geral na fase de paquíteno, por falta de estimulação hormonal. A partir de que o animal chega a puberdade inicia-se o processo de espermatogênese, que se manterá durante toda a vida do animal, exceto em espécies de animais silvestres muito estacionais, ao qual pode se suspender durante a época não reprodutiva para voltar e ser retomada na época ou estação reprodutiva. Depois da puberdade, os túbulos seminíferos possuem um diâmetro muito maior; em seu interior observa-se um grande número de células germinais de todos os tipos, diferentes estádios de divisão, e em seu lúmen contém líquido e espermatozoides. Ainda sobre o alcancei da puberdade, as espermatogonias começam a dividir-se aceleradamente por mitose, enquanto que no espaço intersticial as células mesenquimais também começam a se diferenciar e a dar origem as células de Leydig (figura 3). A partir dessa etapa as células de Leydig (totalmente diferenciadas) são também evidentes no exterior do túbulo, junto com as células mioides ou peritubulares que o rodeiam o que ao contrair-se são responsáveis por controlar o avanço dos fluidos e as células presentes no lúmen do túbulo. As células mioides estão situadas ao redor do túbulo, e é creditado a elas a promoção da contração e da integridade estrutural do túbulo. Esse tipo celular apenas se diferencia na puberdade pela ação dos andrógenos (figura 4). As interações entre as células de Sertoli e as mioides parecem ter um papel importante na manutenção das funções do testículo. Durante o processo de espermatogênese, as espermatogonias de reserva dividem-se periodicamente e enquanto algumas células fixas permanecem como espermatogonias de reserva, outras proliferam e sofrem uma seção de divisões mitóticas durante as quais se vão diferenciando até formarem espermatócitos primários (espermatocitogênese ou fase de mitose), logo sofrem divisões especiais mediante as quais reduzem seu número de cromossomos (fase de meiose), e ao final trocam de forma para converter-se em espermatozoides (espermatocitogênese) (figura 5). Cada uma dessas etapas da espermato- gênese será descrito detalhadamente adiante, antes é necessário a explicação de algumas características das células de Sertoli e de Leydig que ajudarão a entender seu papel durante a espermatogênese. Figura 3: células de Leydig no espaço intersticial do testículo bovino adulto PAS (400 X). Fonte: Embrapa. -/- Figura 4: o estabelecimento da puberdade pela presença de espermatozoides no túbulo. Hematoxilina-eosina (400 X). Fonte: Embrapa. Figura 5: fases mitóticas das espermatogonias (A0 e B) para formação de um espermatócito primário e as duas fases de meiose que se sucedem antes da espermatogênese. Fonte: ZARCO, 2018. -/- Ao início da espermatocitogênese as uniões oclusoras entre as células de Sertoli se abrem por etapas (como as comportas de um submarino) para permitir a passagem das espermatogonias em direção ao centro do túbulo seminífero sem que se estabeleça uma continuidade entre o exterior e o interior da barreira hemato-testicular. Uma vez ultrapassada essa barreira, as sucessivas gerações de espermatogonias, espermatócitos, espermátides e espermatozoides irão se localizar em direção ao interior do túbulo seminífero, em estreita associação com as células de Sertoli. Em consequência, as células de Sertoli dividem o túbulo seminífero em dois compartimentos; o compartimento basal (debaixo das uniões oclusoras das células de Sertoli), ao qual residem as espermatogonias de reserva, e o compartimento adluminal (em direção ao centro do túbulo), cujos espaços entre as células de Sertoli desenvolvem o resto do processo de espermatogênese (meiose e espermatocitogênese). Esse feito é importante porque durante a vida fetal as únicas células germinais existentes eram as espermatogonias de reserva, pelo que os antígenos expressados por gerações mais avançadas (espermatogonias intermediárias, secundárias, espermátides e espermatozoides) não são reconhecidos como próprios do corpo pelo sistema imunológico. Logo, o anterior implica que deve existir uma barreira entre eles e o sangue para evitar um ataque imunológico. Em todas as etapas da espermatogênese, as células de Sertoli atuam como células de suporte para as células germinais, que sempre permanecem recoberta pela membrana das células de Sertoli. Também atuam como células nutricionais já que proporcionam o meio em que as células germinais se desenvolvem e maturam, assim como as substâncias que regulam e sincronizam as sucessivas divisões e transformações das células germinais. As células de Sertoli produzem hormônios, como estrógenos e inibina que atuam sobre a hipófise para regular a secreção das gonadotropinas que controlam a espermatogênese. As células de Leydig que residem no exterior do túbulo seminífero também são importantes para a espermatogênese: produzem a testosterona que estimula e mantém a espermatogênese, bem como serve como substrato sobre o qual atua como aromatizador das células de Sertoli para transformá-las em estrógenos. Como supracitado, para seu estudo podemos dividir a espermatogênese em três fase: espermatocitogênese, meiose e espermiogênese (figura 6). Agora, serão descritas cada uma dessas etapas. Em algumas espécies, incluindo no homem, os macrófagos representam o segundo tipo celular intersticial mais numeroso no testículo, depois das células de Leydig. Os macrófagos e vários subtipos de linfócitos são identificados nós testículos de ovinos e ratos. Eles estão intimamente associados com as células de Leydig e atuam juntamente na regulação da esteroidogênese. Figura 6: fluxograma da espermatogênese. -/- Espermatocitogênese -/- A espermatocitogênese, também chamada de etapa proliferativa ou de mitose, consiste numa série de divisões mitóticas sofridas pelas células descendentes de uma espermatogonia de reserva. Uma vez que a célula se divide, abandona o estado de reserva e começa um processo de diferenciação. As espermatogonias de reserva (denominadas espermatogonias A0 na rata ou As nos humanos) são células que existem desde a vida fetal e que permanecem mitoticamente inativas durante a infância. Uma vez que alcançam a puberdade começam a dividir-se em intervalos regulares, e as células filhas podem permanecer como espermatogonias de reserva ou abandonar a reserva e ingressar na dita espermatocitogênese. Uma vez abandonada a reserva, as células filhas que vão se formando em cada divisão permanecem unidas por pontes citoplasmáticas, constituindo um clone que se divide sincronicamente. As células que se formam depois de cada divisão continuam sendo espermatogonias, porém cada geração é ligeiramente diferente da anterior. Na rata, por exemplo, as espermatogonias tipo A0 ao dividir-se originam espermatogonias do tipo A1, que em sucessivas divisões formam espermatogonias dos tipos A2, A3 e A4, as quais, por sua vez, sofrem outra mitose para formar espermatogonias intermediárias e uma mais para formar espermatogonias do tipo B. Essas últimas se diferenciam (sem se dividir) em espermatócitos primários, processo em que termina a fase de espermatocitogênese, que literalmente significa processo de geração de espermatócitos. As espermatogonias tipo A0 são a fonte para a contínua produção de gametas. A metade delas se dividem e formam células iguais (as chamadas células tronco) e a outra metade forma as espermatogonias A1, que sofre novas divisões mitóticas e formam os tipos 2, 3 e 4. O tipo A4 sofre mitose para formar a intermediária (A In), que por mitose, forma a tipo B (figura 6). Esses tipos de espermatogonias podem ser identificadas em evoluções histológicas de acordo com sua organização topográfica na membrana basal dos túbulos seminíferos ou mediante seu conteúdo de heterocromatina. Outra maneira de diferenciação se baseia em marcadores moleculares específicos que distinguem as espermatogonias tronco (A0) das demais, com os fins de isolamento, desenvolvimento in vitro e transplante. As tipo B passam por mitose para formarem os espermatócitos primários; estes iniciam a primeira etapa da meiose formando os espermatócitos secundários; na segunda etapa da divisão meiótica, cada espermatócito secundário se divide e formam as chamadas espermátides. Quando o testículo alcança seu desenvolvimento total, a meiose completa-se e as espermátides originadas se convertem em espermatozoides. Um dos maiores sinais característicos desse fenômeno é o alargamento das espermátides e sua migração em direção ao lúmen do túbulo seminífero (figuras 4, 7 e 8). Figura 7: espermatogonias marcadas por imuno-histoquímica, anticorpo monoclonal TGFa (400 x). Figura 8: fases de divisões meióticas (M), espermatócitos em paquíteno (PA) e espermatócitos secundários (ES). -/- Figura 9: estádio posterior a liberação dos espermatozoides na luz do túbulo. Hematoxilina-eosina (400 x). Mediante as seis divisões mitóticas que ocorrem durante a espermatocitogênese se forma potencialmente um clone de 64 espermatócitos primários a partir de cada espermatogonia A que ingressa sobre o processo. Não obstante, algumas células sofrem apoptose em cada uma das etapas do processo, ao qual o número real formado é menor. Em outras espécies produzem-se um transcurso similar de divisões mitóticas sucessivas durante a espermatocitogênese, embora a nomenclatura utilizada possa ser distinta, por exemplo nos bovinos as duas últimas divisões mitóticas dão origem as espermatogonias de tipo B1 e B2. -/- Meiose -/- Uma vez que as espermatogonias B se diferenciam em espermatócitos primários, esses iniciam a etapa de meiose, com uma nova divisão; desta vez a divisão é do tipo meiótica. Ao completar-se a primeira divisão meiótica (meiose I) se obtém os espermató-citos secundários, que ao sofrer a segunda divisão meiótica (meiose II) dão origem as espermátides. Vale salientar que a meiose é o processo mediante o qual reduz-se a metade do número de cromossomos, pelo que as espermátides que se obtém são células haploides (1n). Os espermatócitos secundários que se formam depois da primeira divisão meiótica contém a metade do número normal de cromossomos, porém a mesma quantidade de DNA já que cada cromossomo é duplo. As espermátides formadas na conclusão da segunda divisão meiótica (figura 7), por sua vez, contém a metade dos cromossomos, e esse já não são duplos, já que se trata de células 1n. Também deve-se enfatizar que durante a meiose é relevante o entrecruzamento dos cromossomos homólogos, pelo que cada espermátide possui uma combinação única e diferente de genes paternos e maternos. Outro ponto que deve ser levado em consideração é que cada espermátide somente possui um cromossomo sexual; a metade das espermátides contém o cromossomo X herdado da mãe do macho que está levando a cabo a espermatogênese e a outra metade contém o cromossomo Y herdado de seu pai. Para cada espermatócito primário que entra no processo de meiose obtém-se cerca de quatro espermátides, pelo qual ao ser completada a meiose potencialmente se poderiam formar até 256 espermátides por cada espermatogonia que abandona a reserva e ingressa na espermatocitogênese. -/- Espermiogênese -/- Durante a espermiogênese, também chamada de fase de diferenciação, as esper-mátides sofrem, sem se dividir, uma metamorfose que as transforma em espermatozoides, os quais finalmente são liberados das células de Sertoli em direção ao lúmen do túbulo seminífero. A espermiogênese é um processo complicado e longo já que a espermátide deve sofrer complexas trocas nucleares, citoplasmáticas e morfológicas que resultam na forma-ção dos espermatozoides. Algumas dessas mudanças incluem a condensação do material nuclear para formação de um núcleo plano e denso, a eliminação do citoplasma para a constituição de uma célula pequena, a formação de uma estrutura especializada denomi-nada acrossomo ou tampa cefálica, e a formação do pescoço e da cauda (flagelo) do esper-matozoide, do que depende a sua motilidade. Durante a maior parte da espermiogênese, as espermátides se mantém com uma estreita associação com as células de Sertoli; logo, chega-se a observar, então, flagelos que se projetam em direção a luz do túbulo que pare-cem sair das células de Sertoli, sendo na realidade os flagelos dos espermatozoides que ainda não tinham sido liberados pelo lúmen. Ao liberar os espermatozoides em direção a luz do túbulo, as células de Sertoli realizam a fagocitose de parte do citoplasma dos espermatozoides (corpos residuais). Também fagocitam os restos de todas as células germinais que sofrem apoptose ou degeneram-se durante a espermatogênese. Credita-se que ao realizar essas funções as células de Sertoli podem fazer uma monitoração eficiente da espermatogênese, o que lhes permitiria emitir sinais para colaborar na regulação desse processo em nível gonodal e a nível sistêmico através da secreção de hormônios como a inibina e o estradiol. Além da inibina e activina, as células de Sertoli sintetizam outras proteínas, como a ABP (proteína ligadora de andrógenos) que serve como uma molécula de transporte de andrógenos dentro dos túbulos seminíferos, ductos deferentes e epidídimo, ou a transfer-rina, que transporta o ferro necessário para a respiração celular. -/- Resultados da espermatogênese -/- O resultado da espermatogênese não significa apenas uma simples multiplicação das células germinais (até 256 espermatozoides a partir de cada espermatogonia A1), senão que através dela são produzidos gametas haploides pequenos, móveis e com grande diversidade genética entre eles, ao mesmo tempo que se mantêm uma reversa de células mãe (espermatogonias A0) a partir das quais se poderiam originar novos ciclos de esper-matogênese durante o resto da vida do animal. -/- Controle hormonal da espermatogênese -/- Como mencionado, o FSH reproduz um importante papel para o estabelecimento das células de Sertoli durante a vida fetal e início da vida pós-natal. O começo da esper-matogênese também é estimulado pelo FSH, que atua sobre as células de Sertoli para estimular sua função e a ativação de sinais dessas células em direção as células germinais, incluindo-as a abandonar a reserva e ingressar na espermatogênese. O FSH, assim mesmo, estimula a mitose durante o resto da espermatogênese e aumenta a eficiência do processo, já que reduz a apoptose e a degeneração de espermatogonias intermediárias e do tipo B. O FSH também estimula as células de Sertoli para produzirem inibina e ABP. Uma vez iniciada a espermatogênese somente requerem níveis baixos de FSH para se mantê-la. As células de Sertoli também devem ser estimuladas pela testosterona para funcio-nar de maneira adequada; se requer também do LH hipofisário: hormônio que estimula as células de Leydig para produzir testosterona. Por sua vez, a secreção de LH e FSH é regulada pelo GnRH hipotalâmico: esse neurohormônio também faz parte do mecanismo de regulação da espermatogênese. A espermatogênese também é modulada em nível local mediante a produção de determinados fatores e interações entre as células. Dentro dos fatores locais podemos mencionar o fator de crescimento parecido com a insulina 1 (IGF-1), o fator de crescimen-to transformante beta (TGF- β), activina, ocitocina e diversas citocinas. Entre as intera-ções celulares existem tanto uniões de comunicação entre as células de Sertoli e as células germinais, como pontes citoplasmáticas entre todas as células germinais que formam o clone de células descendentes de uma espermatogonia A1. Uma vez que as células de Sertoli iniciam sua função na puberdade é possível manter experimentalmente a espermatogênese somente com testosterona, sem ser requeri-dos nenhum outro hormônio. A quantidade de espermatozoides produzidos, no entanto, é maior quando há presença do FSH. Abaixo do estímulo do FSH as células de Sertoli produzem estradiol e inibina, hormônios que geram uma retroalimentação sobre o eixo hipotálamo-hipofisário para a regulação da secreção de gonadotropinas. Em particular, a inibina reduz a secreção de FSH, pelo qual é factível que sirva como um sinal que evite uma excessiva estimulação as células de Sertoli. -/- Ciclo do epitélio seminífero -/- Em cada espécie as espermatogonias de reserva iniciam um novo processo de divi-sões celulares em intervalos fixos: a casa 14 dias no touro; 12 dias no garanhão e a cada 9 dias no cachaço (reprodutor suíno). A nova geração de células que começam a proliferar sobre a base do tubo deslocam-se em direção ao centro do túbulo a geração anterior, que por sua vez deslocam-se as gerações anteriores. Devido as mudanças que vão sofrendo cada geração celular se ajustam a tempos característicos de cada etapa, já que rodas as células em uma determinada seção do túbulo estão sincronizadas entre si pelas células de Sertoli; em cada espécie somente é possível encontrar um certo número de combinações celulares: 14 diferentes combinações no caso da rata, 8 no touro e 6 no ser humano. A sucessão de possíveis combinações até regressar a primeira combinação se conhece como o ciclo do epitélio seminífero. Na maioria das espécies os espermatozoides que são libera-dos em direção a luz do túbulo provém das células que entraram no processo de esperma-togênese quatro gerações antes que a geração que está ingressando nesse momento, pelo que a espermatogênese no touro dura ao redor de 60 dias e um pouco menos em outras espécies domésticas. Significa que os efeitos negativos das alterações na espermatogêne-se podem estar presentes até dois meses depois de que se produziram essas alterações. Como supracitado, geralmente se observa a mesma combinação celular em toda a área de uma determinada secção transversal do túbulo seminífero. No entanto, se fizermos uma série de secções, observa-se que ao longo do túbulo há uma sucessão ordenada de combinações (a primeira em uma determinada secção; a segunda combinação na seguinte secção, e assim sucessivamente em secções subsequentes até regressar a primeira combi-nação. Teremos, então, que ao início da divisão das espermatogonias A1 se produz de forma sincronizada em uma secção do túbulo, e vai-se transmitindo como uma onda peristáltica as secções adjacentes. Esse processo é denominado como onda do epitélio seminífero e graças à esse túbulo seminífero sempre tem secções em todas as etapas da espermatogênese, com o que se alcança uma produção constante de espermatozoides. -/- Alterações da espermatogênese -/- Nas espécies estacionais a espermatogênese, como já mencionado, pode reduzir-se ou inclusive suspender sua atividade fisiológica durante a época não reprodutiva dessas espécimes, porém esse processo fisiológico não pode ser considerado como uma altera-ção. No entanto, a espermatogênese só pode ser alterada pelas enfermidades ou por fatores externos. A principal causa de alterações na espermatogênese é o aumento da temperatura testicular. Por isso, os testículos são localizados na saco escrotal e são “caídos” para fora do corpo como pode-se observar nos bovinos, caprinos, ovinos, caninos e no próprio homem. A temperatura testicular deve estar cerca de 2 a 6 °C abaixo da temperatura corporal normal. As células germinais masculinas são sensíveis ao calor, pelo qual na maioria dos mamíferos os testículos se encontram fora da cavidade abdominal e existe um sofisticado sistema de termorregulação para mantê-los a uma temperatura menor que a corporal. Se a temperatura corporal for elevada ou se os testículos permanecerem na cavidade abdominal, ou ainda se os sistemas termorreguladores do testículo sejam afetados por fatores inflamatórios como edema ou falta de mobilidade testicular dentro do escroto, a temperatura do tecido testicular aumentará e a espermatogênese sofrerá alterações proporcionais ao excesso de temperatura e a duração da elevação. A espermatogênese também pode ser afetada pela exposição a hormônios ou a outras substâncias. É possível que a causa mais comum (sobretudo no homem) seja o uso de esteroides anabólicos, que elevam a concentração de andrógenos na circulação, provo-cando um feedback negativo sobre a secreção de gonadotropinas. Ao deixar de estimular-se o testículo pelas gonadotropinas, este deixará de produzir testosterona, e as concentra-ções de andrógeno exógeno nunca alcançará as altíssimas concentrações de testosterona que normalmente estão presentes a nível do tecido testicular por ser o local onde se produz o hormônio. Também se supõe que diversas substâncias com propriedades estrogênicas derivadas de processos industriais (indústria dos plásticos, hidrocarbonetos etc.) e presentes no ambiente (fatores xenobióticos) podem ser responsáveis pelas alterações na espermatogênese em diversas espécies, entre as quais se inclui o ser humano. -/- • OVOGÊNESE E FOLICULOGÊNESE -/- A ovogênese é o processo seguido pelas células germinais da fêmea para a forma-ção dos óvulos, que são células haploides. Durante a vida fetal as células germinais proliferam-se no ovário por mitose, formando um grande número de ovogonias, algumas das quais se diferenciam em ovócitos primários que iniciam sua primeira divisão meiótica para deter-se na prófase da divisão. Somente alguns desses ovócitos primários retornarão e concluirão a primeira divisão meiótica em algum momento da vida adulta do animal, dando origem a um ovócito secundário e a um corpo polar. O ovócito secundário inicia a sua segunda divisão meiótica, a qual volta a ficar suspensa até receber um estímulo apropriado, já que somente os ovócitos secundários que são ovulados e penetrados por um espermatozoide retornam e concluem a segunda divisão meiótica, dando origem a um óvulo (figura 10). O processo de ovogênese é realizado dentro dos folículos ovarianos, que também tem que sofrer um longo transcurso de desenvolvimento e diferenciação denominado foliculogênese pelo que a ovogênese como tal realiza-se dentro do marco desse último processo. Por essa razão, na seguinte seção descreverei tanto a ovogênese como a folicu-logênese, e a relação que existe entre ambos. Figura 10: representação da ovogênese. Na etapa de proliferação, as células germinais se diferen-ciam por mitose. A meiose I se caracteriza por uma prófase prolongada, ocorrendo a duplicação do DNA. Nas duas divisões, que ocorrem antes da ovulação e depois da fertilização, a quantidade de DNA é reduzida a 1n, com o fim de que a fusão dos pronúcles (singamia) pós-fertilização, seja gerado um zigoto com um número de cromossomos de 2n (diploide). -/- Geração de ovócitos primários e folículos primordiais Tanto a ovogênese como a foliculogênese iniciam-se durante a vida fetal, quando as células germinais primordiais provenientes do saco vitelino colonizam a gônada primitiva e, junto com as células somáticas z organizam-se para a formação dos cordões sexuais secundários, que se desenvolvem principalmente no córtex do ovário. Nesse período, as células germinais que colonizaram o ovário sofrem até 30 divisões mitóticas, proliferando-se até formar milhares ou milhões de ovogonias, que inicialmente formam “ninhos” constituídos cada um deles por um clone de várias ovogonias que descendem da mesma célula precursora e que se mantêm unidas por pontes citoplasmáticas, sincronizan-do suas divisões mitóticas. Nessa etapa alcança-se a máxima população de células germinais no ovário, que antes de nascer se reduzirá drasticamente por apoptose. No ovário do feto humano chegam a haver até sete milhões de células germinais que ao nascimento se reduzem a dois milhões. Os ovários fetais do bovino, de maneira análoga, chegam a ter até 2.100.000 células germinais, que ao nascimento reduzem para 130.000 aproximadamente. A redução no número de ovogonias produz-se ao mesmo tempo que essas células, que vêm dividindo-se por mitose e estão agrupadas em ninhos, iniciam sua primeira divisão meiótica para se transformarem em ovócitos primários: células germinais que se encontram em uma etapa de suspensão (diplóteno) da prófase da primeira divisão meiótica. Nesse período produz-se uma grande proporção de células germinais; as células somáticas dos cordões sexuais, por sua vez, emitem projeções citoplasmáticas que separam a isolam os ovócitos primários sobreviventes, ficando cada um deles rodeados por uma capa de células aplanadas da (pré) granulosa. Ao mesmo tempo em que se forma uma membrana basal entre as células da granulosa e o tecido intersticial do ovário. Ao ovócito primário rodeado de uma capa de células da (pré) granulosa aplanadas e delimita-das por uma membrana basal denomina-se de folículo primordial (figura 11). Nas vacas os folículos primordiais bem formados já estão presentes nos ovários a partir do dia 90 da gestação. A maioria dos folículos primordiais com os que nasce uma fêmea se manterão inativos durante um longo tempo; muitos deles durante toda a vida do animal. Nos folículos primordiais inativos tanto os ovócitos primários como as células da granulosa conservam sua forma original e mantém um metabolismo reduzido estritamente ao mínimo necessário para manter-se viáveis. Por essa razão, ao realizar um corte histológico de qualquer ovário as estruturas mais numerosas que se observam serão os folículos primordiais. No entanto, cada dia da vida de um animal, inclusive desde a vida fetal, um certo número de folículos primordiais reiniciam seu desenvolvimento, e a partir desse momento um folículo exclusivamente pode ter dois destinos: o primeiro, prosseguir seu desenvolvi-mento até chegar a ovular, e o segundo (que é muito mais frequente) encontrar em algum momento condições inadequadas que fazem fronteira com ele para parar seu desenvolvi-mento, levando-o a sofrer atresia e degenerar até desaparecer do ovário. Figura 11: sequência da foliculogênese apresentando as diferentes estruturas que podemos encontrar em cada fase. Fonte: ZARCO, 2018. Culminação da ovogênese A ovogênese somente se completará quando um ovócito primário reinicia a meio-se; completa sua primeira divisão meiótica para formar um ovócito secundário e um primeiro corpo polar e, quando, finalmente sofrer uma segunda divisão meiótica para formar um óvulo e um segundo corpo polar. Os óvulos são as células 1n que constituem os gametas femininos, pouco numerosos, grandes e imóveis. A grande maioria dos ovóci-tos primários, como veremos mais adiante, nunca retomam a meiose e, em consequência, não chegam a formar ovócitos secundários, e muitos dos ovócitos secundários tampouco sofrem uma segunda divisão meiótica, pelo que não chegam a formar os óvulos. Ao longo da vida de uma fêmea, na maioria das espécies, menos de 0,1% dos ovócitos primários (um a cada mil) chega a terminar a ovogênese, dando origem a um óvulo. O supracitado deve-se a que a ovogênese somente pode retomar-se e ser completa-da em ovócitos primários que se encontram dentro dos folículos primordiais que (uma vez ativados) vão alcançando diversas etapas de seu desenvolvimento em momentos precisos aos que encontram as condições ideais de oxigenação, nutrição, vascularização e exposição a fatores parácrinos e a exposição a concentrações de hormônios que se requerem para que o folículo continue em cada etapa de seu desenvolvimento com o processo de foliculogênese até chegar a ovular. Qualquer folículo que não esteja nessas condições ao longo do desenvolvimento sofrerá degeneração e atresia, pelo que o ovócito primário em seu interior nunca chegará ao ponto em que pode retomar a primeira divisão meiótica. No que resta da presente seção revisaremos o processo de foliculogênese em cujo marco se desenvolve a ovogênese; havemos que tomar de conta que essa última se limita ao que ocorre nas células germinais (ovogonia, ovócito primário, secundário e óvulo), pelo qual depende intimamente do desenvolvimento do folículo de que essas células formam parte. Em um princípio a ativação do folículo primordial e o desenvolvimento folicular são independentes das gonadotropinas: não se conhecem os mecanismos precisos median-te os quais um folículo primordial se ativa e reinicia seu desenvolvimento, nem como se decide quais folículos, dentre as dezenas de milhares de ou centenas de milhares presentes em um ovário se reativarão em um dia em particular. A reativação trata-se de uma liberação de influência de fatores inibidores, já que os folículos primordiais se reativam espontaneamente quando cultivados in vitro, isolados do resto do tecido ovariano. Uma vez que um folículo primordial se ativa, inicia-se um longo processo de desenvolvimento que somente depois de vários meses (ao redor de cinco meses no caso dos bovinos) o levará a um estádio em que seu desenvolvimento posterior requer a presença das gonado-tropinas; daí que se diz que as primeiras etapas do desenvolvimento são independentes das gonadotropinas. Durante a fase independente de gonadotropinas, um folículo primordial que tenha sido ativado e tenha começado a crescer; passará primeiro para a etapa de folículo primá-rio, caracterizada por conter um ovócito primário que está rodeado, por sua vez, por uma capa de células da granulosa, que não são planas, e sim cúbicas. Depois, se o folículo continuar crescendo se transformará em um folículo secundário, ao qual as células da granulosa começam a proliferar (aumentando em número) e se organizam em duas ou mais capas que rodeiam o ovócito primário. Entre o ovócito e as células da granulosa que o rodeiam se forma nesta uma zona pelúcida; ainda assim o ovócito mantém contato direto com essas células, mediante o estabelecimento de pontes citoplasmáticas que atravessam a zona pelúcida. Através dessas pontes citoplasmáticas as células da granulosa podem passar nutrientes e informação ao ovócito primário. O volume e o diâmetro do ovócito primário aumentam ao mesmo tempo que as células da granulosa proliferam-se, para incrementar as capas ao redor do ovócito. De maneira gradual o citoplasma do ovócito primário aumenta até 50 vezes seu volume e a proliferação das células continua. Esses folículos que possuem cada vez mais células e portanto mais capas de células da granulosa se denominam folículos secundários. Para evitar confusões, há a necessidade de nomen-clatura ao qual o folículo vá mudando de nome de primordial a primário e logo, de secun-dário, a terciário, por sua vez, o ovócito que encontra-se em seu interior, a todo momento, segue sendo um ovócito primário. Durante a etapa dependente de gonadotropinas, os folículos secundários começam a formar um espaço cheio de líquido, o antro folicular, desse modo se convertem em folí-culos terciários. Com a utilização de outra nomenclatura, a formação do antro marca a transição entre folículos pré-antrais (sem antro) e folículos antrais (com antro). Em algum momento dessa transição entre folículo secundário e terciário, também aparece a depen-dência de folículos em direção as gonadotropinas, pelo qual somente podem seguir crescendo na presença do hormônio luteinizante (LH) e do hormônio folículo estimulante (FSH). Nos bovinos e em outras espécies (para seu estudo), os folículos antrais são dividi-dos em pequenos, médios e grandes. Embora todos eles possuam um antro folicular, dependendo do seu grau de desenvolvimento requerem diferentes concentrações de gona-dotropinas para continuar o crescimento. Os folículos antrais mais pequenos somente re-querem concentrações baixas de LH e FSH, pelo qual podem continuar crescendo em qualquer momento do ciclo estral inclusive em animais que não estão ciclando (fêmeas em anestro pré-puberal, gestacional, lactacional, estacional). Nas etapas posteriores os folículos antrais requerem primeiro concentrações elevadas de FSH, e nas etapas finais somente podem continuar crescendo na presença de pulsos frequentes de LH, pelo qual somente os folículos que encontram-se sob concentrações apropriadas desses hormônios podem seguir crescendo. Por essa razão, nos animais que se encontram em anestro de qualquer tipo somente é possível encontrar folículos antrais pequenos ou médios, segundo a espécie, e nos animais que se encontram ciclando (estro) o maior tamanho folicular encontrado em um determinado dia do ciclo dependerá das concentrações de FSH e LH presentes nesse momento e nos dias anteriores. Um folículo que chega ao estado máximo de desenvolvimento, conhecido como folículo pré-ovulatório, ao final, somente chegará a ovular se for exposto a um pico pré-ovulatório de LH. Como supracitado, cada dia na vida de uma fêmea inicia seu desenvolvimento um certo número de folículos; a grande maioria sofrem atresia, mas depois da puberdade em cada dia do ciclo estral um ou vários folículos vão encontrando ao longo do seu desenvol-vimento concentrações hormonais que lhes permite chegar na etapa de folículo pré-ovula-tório. Somente nestes folículos, e como consequência de um pico pré-ovulatório de LH, se reinicia e completa-se a primeira divisão meiótica do ovócito primário, produzindo duas células distintas. Uma delas é o ovócito secundário, que retém praticamente todo o citoplasma. Contém, assim mesmo, em seu núcleo um par de cromossomos duplos, a outra é o primeiro corpo polar, que é exclusivamente um núcleo com uma quantidade mínima de citoplasma. Na maioria das espécies ovula-se um ovócito secundário que se encontra, então, suspendido na segunda divisão meiótica. Esta segunda divisão meiótica somente reinicia-rá e completarar-se uma vez que o espermatozoide começa a penetrar sob o ovócito secundário. Ao concluir-se a divisão se forma o segundo corpo polar e completa-se a ovogênese com o qual se obtém o óvulo, célula 1n que constitui o gameta feminino. No entanto, o óvulo existe pouco tempo como tal, já que em poucos minutos/horas (depen-dendo da espécie) se produzirá a fusão do núcleo do mesmo (pró-núcleo feminino) com o do espermatozoide (pró-núcleo masculino), com o qual se completa a fertilização e se forma um novo indivíduo (o ovo ou zigoto). -/- Ondas foliculares -/- Como mencionado supra, todos os dias um determinado número de folículos pri-mordiais se ativam e começam a crescer, os quais crescem em um ritmo característico em cada espécie. Isso provoca que em qualquer momento existam nos ovários folículos pri-mordiais (que começam a crescer em alguns dias ou semanas), assim como folículos secundários em diversas etapas do desenvolvimento, os quais iniciaram seu desenvolvi-mento em semanas ou inclusive meses (segundo o grau de desenvolvimento atual). Também em qualquer momento poderá haver folículos antrais nas etapas iniciais de seu desenvolvimento (com antros que já se podem detectar em cortes histológicos mas não são visíveis macroscopicamente). Todos esses folículos chegaram até seu estado de de-senvolvimento atual (primário, secundário ou antral pequeno), independente da etapa do ciclo estral em que sejam observados ou encontrados. Nos bovinos, os folículos que chegam ao início da etapa antral iniciaram seu desenvolvimento cinco meses antes, e todavia requerem ao redor de 42 dias para chegar ao estado pré-ovulatório. Para continuar seu desenvolvimento, os folículos antrais pequenos devem encon-trar concentrações altas de FSH, que os estimulam para prosseguir o crescimento. Cada vez que se produz uma elevação nas concentrações de FSH, esse hormônio estimula o desenvolvimento de um grupo de folículos antrais pequenos, que começaram a crescer muito tempo antes e que o dia da elevação de FSH tenha alcançado o grau de desenvolvi-mento preciso para responder com eficiência a este hormônio, o qual atuará através de seus receptores nas células da granulosa para estimular a produção de estradiol, a secreção de inibina, a produção de líquido folicular e a proliferação das células da granulosa. Um grupo de folículos antrais pequenos é assim recrutado pelo FSH para acelerar seu cresci-mento e aumentar sua produção de estradiol e inibina (figura 12). Mediante um seguimento ultrassonográfico dos ovários é possível identificar pou-cos dias depois um certo número de folículos, que por haver sido recrutados começam um período de crescimento acelerado. Durante alguns dias vários folículos crescem juntos, porém depois um deles é selecionado para continuar crescendo, enquanto que o restante do grupo deixam de fazê-lo e terminam sofrendo atresia. Através da ultrassom é possível identificar o folículo selecionado, agora chamado folículo domi-nante, já que sua trajetória de crescimento sofre um desvio com respeito a seguida pelo restante do grupo. Os folículos que não foram selecionados deixam de crescer e sofrem atresia já que deixam de possuir o suporte gonadotrópico de FSH, uma vez que as concentrações desse hormônio são suprimidos pela inibina e o estradiol produzidos pelo conjunto de folículos que conformam a onda folicular (figura 12), porém o folículo mais desenvolvido do grupo se converterá em dominante. A inibina atua diretamente a nível hipofisário para reduzir a secreção de FSH. Figura 12: onda folicular e relação dos níveis de FSH, estradiol e LH. Fonte: ZARCO, 2018. -/- Figura 13: Recrutamento, seleção e dominação folicular na espécie ovina e influência do FSH e LH nas fases. Fonte: SILVA, E. I. C. da, 2019. -/- A razão pela qual o folículo dominante é capaz de continuar seu desenvolvimento apesar da baixa nas concentrações de FSH é que o folículo é o único que alcançou o grau de progresso necessário para que apareçam os receptores para LH em suas células da granulosa. Esse processo permite ao folículo dominante ser estimulado pela LH, e que requeira baixas concentrações de FSH para manter seu desenvolvimento. A secreção de LH em forma de pulsos de baixa frequência (um pulso a cada quatro a seis horas), característica da fase lútea do ciclo estral; é suficiente para permitir que um folículo dominante continue crescendo por mais dias depois da sua seleção e que mais tarde mantenha-se viável durante alguns dias embora não aumentem de tamanho. Contu-do, se durante o período viável desse folículo não seja finalizada a fase lútea e não diminuam as concentrações de progesterona, o folículo terminará sofrendo atresia devido a exigência de um padrão de secreção acelerada de LH (aproximadamente um pulso por hora) durante o desenvolvimento pré-ovulatório, que somente pode ser produzido com a ausência da progesterona. Uma vez que um folículo dominante sofre atresia deixa de produzir inibina, pelo qual as concentrações de FSH podem elevar-se novamente para iniciar o recrutamento de outro grupo de folículos a partir da qual se origina uma nova onda folicular. Durante o ciclo estral de uma vaca podem gerar-se dois ou três ondas foliculares; somente em raros casos quatro. A etapa de dominância folicular da primeira onda na grande maioria dos casos não coincide com a regressão do corpo lúteo, pelo qual o primei-ro folículo dominante quase invariavelmente termina em atresia. Em algumas vacas o fo-lículo dominante da segunda onda ainda está viável quando se produz a regressão do corpo lúteo e acelera-se a secreção de LH, pelo qual esse segundo folículo dominante se converte em folículo pré-ovulatório e, ao final ovula. Em outros animais o segundo folícu-lo dominante também perde a sua viabilidade antes da regressão do corpo lúteo, por onde nesses animais se inicia uma terceira onda folicular, da qual surge o folículo que finalmen-te ovulará depois de produzir-se a regressão do corpo lúteo. Sem importar a onda em que se origine, uma vez que um folículo dominante é ex-posto a alta frequência de secreção de LH que se produz depois da regressão do corpo lúteo, aumenta ainda mais sua secreção de estradiol até que as altas concentrações desse hormônio comecem a exercer um feedback positivo para a secreção do LH. Isso provoca-rá a aceleração da frequência de secreção do LH até que os pulsos são tão frequentes que começam a ficar por cima e produzir-se o pico pré-ovulatório de LH, que é responsável pela realização da ovulação e a maturação final do ovócito. -/- •___DIFERENÇAS ENTRE ESPERMATOGÊNESE E OVOGÊNESE -/- Enquanto que na fêmea a ovogênese inicia-se durante a vida fetal, no macho a es-permatogênese começa na puberdade. Na fêmea, a partir de um ovócito primário se origi-na um óvulo; no macho, de um espermatócito primário se produzem, teoricamente, quatro espermatozoides. Outra característica interessante é que enquanto a fêmea já conta desde o nasci-mento com todos os ovócitos que necessitará na vida adulta, o macho necessitará chegar a puberdade para iniciar o desenvolvimento das células sexuais, já que ao nascer somente possui gonócitos precursores das células germinais, células de Sertoli e intersticiais. Na vida adulta de uma fêmea, o número de células germinais desaparece paulati-namente. Uma vez iniciada a espermatogênese no macho, a cada ciclo do epitélio seminí-fero as células germinais são renovadas mantendo a provisão para toda a vida reprodutiva. Na fêmea, a meiose sofre duas interrupções em seu transcurso, e no macho é ininterrupta. Figura 14: representação em diagramação comparativa do desenvolvimento da gametogênese. -/- Principais pontos abordados sobre as diferenças entre a gametogênese masculina e feminina: ❙ Na ovogênese a meiose contêm-se em duas ocasiões esperando acontecimentos externos para prosseguir. Já na espermatogênese não existe a suspensão da meiose. ❙ A espermatogênese é um processo contínuo, enquanto que a ovogênese pode completar exclusivamente um óvulo em cada ciclo estral; já que só pode ser completada por mais de um nas espécies que ovulam vários ovócitos no caso das porcas, cadelas, gatas etc. ❙ Na espermatogênese existem células de reserva que permitem a continuação du-rante toda a vida, enquanto que na ovogênese o número de ovócitos primários é limitado. A fêmea somente conta com os que nasceu, e eles não se dividem. ❙ Na espermatogênese obtém-se até 256 espermatozoides para cada espermatogo-nia que inicia o processo, enquanto que na ovogênese somente se obtém um óvulo a partir de cada ovócito primário. ❙ Durante a espermatogênese se produz uma metamorfose que transforma as es-permátides em espermatozoides. Na ovogênese não ocorre um processo análogo. ❙ Na espermatogênese, durante a meiose produzem-se quatro espermátides a partir de cada espermatócito primário. Na ovogênese se produz somente um óvulo a partir de cada ovócito primário; produz, ademais, dois corpos polares. ❙ Todos os óvulos que se produzem durante a ovogênese contém um cromossomo X, enquanto que a metade dos espermatozoides possuem um cromossomo Y e a outra metade um cromossomo X. ❙ Na espermatogênese produzem-se centenas ou dezenas de milhões de esperma-tozoides por dia, enquanto que na ovogênese se produz um ou alguns óvulos a cada ciclo estral. ❙ A espermatogênese produz gametas macroscópicos e com motilidade própria, enquanto que a ovogênese produz gametas grandes e imóveis. -/- REFERÊNCIAS BIBLIOGRÁFICAS -/- ABDEL-RAOUF, Mohammed et al. The postnatal development of the reproductive organs in bullswith special reference to puberty.(Including growth of the hypophysis and the adrenals). Acta endocrinologica, n. Suppl No. 49, 1960. ADONA, Paulo Roberto et al. Ovogênese e foliculogênese em mamíferos. Journal of Health Sciences, v. 15, n. 3, 2013. AERTS, J. M. J.; BOLS, P. E. 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Coordinated regulation of follicle development by germ and somatic cells. Reproduction, Fertility and Development, v. 22, n. 1, p. 1-12, 2009. CHIARINI-GARCIA, Helio; RUSSELL, Lonnie D. High-resolution light microscopic characterization of mouse spermatogonia. Biology of reproduction, v. 65, n. 4, p. 1170-1178, 2001. CHOUDARY, J. B.; GIER, H. T.; MARION, G. B. Cyclic changes in bovine vesicular follicles. Journal of animal science, v. 27, n. 2, p. 468-471, 1968. CLERMONT, Yves; PEREY, Bernard. Quantitative study of the cell population of the seminiferous tubules in immature rats. American Journal of Anatomy, v. 100, n. 2, p. 241-267, 1957. COSTA, DEILER SAMPAIO; PAULA, T. A. R. Espermatogênese em mamíferos. Scientia, v. 4, 2003. CUNNINGHAM, James. Tratado de fisiologia veterinária. Elsevier Health Sciences, 2011. CUPPS, Perry T. (Ed.). Reproduction in domestic animals. Elsevier, 1991. DA SILVA, Emanuel Isaque Cordeiro. Fisiologia Clínica do Ciclo Estral de Vacas Leiteiras: Desenvolvimento Folicular, Corpo Lúteo e Etapas do Estro. 2020. Acervo pessoal. DA SILVA, Emanuel Isaque Cordeiro. Fisiologia da Reprodução Animal: Ovulação, Controle e Sincronização do Cio. 2020. Acervo pessoal. DUKES, Henry Hugh; SWENSON, Melvin J.; REECE, William O. Dukes fisiologia dos animais domésticos. Editora Guanabara Koogan, 1996. EPIFANO, Olga; DEAN, Jurrien. Genetic control of early folliculogenesis in mice. Trends in Endocrinology & Metabolism, v. 13, n. 4, p. 169-173, 2002. ERICKSON, B. H. Development and senescence of the postnatal bovine ovary. Journal of animal science, v. 25, n. 3, p. 800-805, 1966. REFERÊNCIAS BIBLIOGRÁFICAS -/- FELDMAN, Edward C. et al. Canine and feline endocrinology-e-book. Elsevier health sciences, 2014. FUSCO, Giuseppe; MINELLI, Alessandro. The Biology of Reproduction. Cambridge University Press, 2019. GALINA-HIDALGO, Carlos Salvador. A study of the development of testicular function and an evaluation of testicular biopsy in farm animals. 1971. Tese de Doutorado. Royal Veterinary College (University of London). GALLICANO, G. Ian. Composition, regulation, and function of the cytoskeleton in mammalian eggs and embryos. Front Biosci, v. 6, p. D1089-1108, 2001. GILBERT, Scott F. Biología del desarrollo. Ed. Médica Panamericana, 2005. GNESSI, Lucio; FABBRI, Andrea; SPERA, Giovanni. Gonadal peptides as mediators of development and functional control of the testis: an integrated system with hormones and local environment. Endocrine reviews, v. 18, n. 4, p. 541-609, 1997. HAFEZ, Elsayed Saad Eldin; HAFEZ, Bahaa. Reprodução animal. São Paulo: Manole, 2004. HEDGER, Mark P. Testicular leukocytes: what are they doing?. Reviews of reproduction, v. 2, n. 1, p. 38-47, 1997. HUTSON, James C. Testicular macrophages. In: International review of cytology. Academic Press, 1994. p. 99-143. HYTTEL, P. Gametogênese. In. HYTTEL, Poul; SINOWATZ, Fred; VEJLSTED, Morten. Embriologia veterinária. São Paulo: Elsevier Brasil, 2012. JOHNSON, Martin H. Essential reproduction. Nova Jersey: John Wiley & Sons, 2018. JONES, Richard E.; LOPEZ, Kristin H. Human reproductive biology. Academic Press, 2013. KIERSZENBAUM, Abraham L.; TRES, Laura L. Primordial germ cell‐somatic cell partnership: A balancing cell signaling act. Molecular Reproduction and Development: Incorporating Gamete Research, v. 60, n. 3, p. 277-280, 2001. MATZUK, Martin M. et al. Intercellular communication in the mammalian ovary: oocytes carry the conversation. Science, v. 296, n. 5576, p. 2178-2180, 2002. MCLAREN, Anne. Germ and somatic cell lineages in the developing gonad. Molecular and cellular endocrinology, v. 163, n. 1-2, p. 3-9, 2000. MCKINNON, Angus O. et al. (Ed.). Equine reproduction. John Wiley & Sons, 2011. MERCHANT-LARIOS, Horacio; MORENO-MENDOZA, Norma. Onset of sex differentiation: dialog between genes and cells. Archives of medical research, v. 32, n. 6, p. 553-558, 2001. MINTZ, Beatrice et al. Embryological phases of mammalian gametogenesis. Embryological phases of mammalian gametogenesis., v. 56, n. Suppl. 1, p. 31-43, 1960. MORALES, M. E. et al. Gametogénesis. I. Revisión de la literatura, con enfoque en la ovogénesis. Medicina Universitaria, v. 8, n. 32, p. 183-9, 2006. NAKATSUJI, NORIO; CHUMA, SHINICHIRO. Differentiation of mouse primordial germ cells into female or male germ cells. International Journal of Developmental Biology, v. 45, n. 3, p. 541-548, 2002. NILSSON, Eric; PARROTT, Jeff A.; SKINNER, Michael K. Basic fibroblast growth factor induces primordial follicle development and initiates folliculogenesis. Molecular and cellular endocrinology, v. 175, n. 1-2, p. 123-130, 2001. REFERÊNCIAS BIBLIOGRÁFICAS -/- NORRIS, David O.; LOPEZ, Kristin H. The endocrinology of the mammalian ovary. In: Hormones and reproduction of vertebrates. Academic Press, 2011. p. 59-72. PEDERSEN, Torben. Follicle growth in the immature mouse ovary. European Journal of Endocrinology, v. 62, n. 1, p. 117-132, 1969. PINEDA, Mauricio H. et al. McDonald's veterinary endocrinology and reproduction. Iowa state press, 2003. ROSER, J. F. Endocrine and paracrine control of sperm production in stallions. Animal Reproduction Science, v. 68, n. 3-4, p. 139-151, 2001. RUSSELL, Lonnie D. et al. Histological and histopathological evaluation of the testis. International journal of andrology, v. 16, n. 1, p. 83-83, 1993. RÜSSE, I.; SINOWATZ, F. Gametogenese. Lehrbuch der Embryologie der Haustiere, p. 42-92, 1991. SAITOU, Mitinori; BARTON, Sheila C.; SURANI, M. Azim. A molecular programme for the specification of germ cell fate in mice. Nature, v. 418, n. 6895, p. 293-300, 2002. SALISBURY, Glenn Wade et al. Physiology of reproduction and artificial insemination of cattle. WH Freeman and Company., 1978. SAWYER, Heywood R. et al. Formation of ovarian follicles during fetal development in sheep. Biology of reproduction, v. 66, n. 4, p. 1134-1150, 2002. SCARAMUZZI, R. J.; MARTENSZ, N. D.; VAN LOOK, P. F. A. Ovarian morphology and the concentration of steroids, and of gonadotrophins during the breeding season in ewes actively immunized against oestradiol-17β or oestrone. Reproduction, v. 59, n. 2, p. 303-310, 1980. SEIDEL JR, G. E. et al. Control of folliculogenesis and ovulation in domestic animals: puberal and adult function. In: 9th International Congress on Animal Reproduction and Artificial Insemination, 16th-20th June 1980. II. Round tables. Editorial Garsi., 1980. p. 11-16. SKINNER, Michael K. Cell-cell interactions in the testis. Endocrine Reviews, v. 12, n. 1, p. 45-77, 1991. SMITZ, J. E.; CORTVRINDT, Rita G. The earliest stages of folliculogenesis in vitro. Reproduction, v. 123, n. 2, p. 185-202, 2002. SORENSEN, Anton Marinus. Reproducción animal: principios y prácticas. México, 1982. SUTOVSKY, Peter; MANANDHAR, Gaurishankar. Mammalian spermatogenesis and sperm structure: anatomical and compartmental analysis. In. The sperm cell: Production, maturation, fertilization, regeneration, p. 1-30, 2006. TAZUKE, Salli I. et al. A germline-specific gap junction protein required for survival of differentiating early germ cells. Development, v. 129, n. 10, p. 2529-2539, 2002. VAN STRAATEN, H. W. M.; WENSING, C. J. G. Leydig cell development in the testis of the pig. Biology of Reproduction, v. 18, n. 1, p. 86-93, 1978. TURNBULL, K. E.; BRADEN, A. W. H.; MATTNER, P. E. The pattern of follicular growth and atresia in the ovine ovary. Australian Journal of Biological Sciences, v. 30, n. 3, p. 229-242, 1977. WASSARMAN, Paul M. Gametogenesis. Londres: Academic Press, 2012. WROBEL, K.-H.; SÜß, Franz. Identification and temporospatial distribution of bovine primordial germ cells prior to gonadal sexual differentiation. Anatomy and embryology, v. 197, n. 6, p. 451-467, 1998. REFERÊNCIAS BIBLIOGRÁFICAS -/- ZARCO, L. Gametogénese. In. PORTA, L. R.; MEDRANO, J. H. H. Fisiología reproductiva de los animales domésticos. Cidade do México: FMVZ-UNAM, 2018. ZIRKIN, Barry R. et al. Endocrine and Paracrine Regulation of Mammalian Spermatogenesis. In: Hormones and Reproduction of Vertebrates. Academic Press, 2011. p. 45-57. -/- REALIZAÇÃO -/- . (shrink)

Regional aspects of science communication represent a potential asset and as such are quite suitable topic for further examination with respect to future social and economic development in Prague based on the city's main development strategies. Closer analysis of SCIP aspects at re- gional level can present a suitable complement for development of suitable measures and projects of the regional innovation and education policies. This study focuses on research questions related to regional dimension of science communication, its impacts and suitable (...) tools. Document analysis and questionnaire distributed among selected experts were chosen as tools for elaboration of the study. Results suggest that regional dimension of science communication policy and initiatives is a relevant one in case of Prague. However, the attention given to this topic by national and regional authorities is unsatisfactory resulting in lack of co-ordination of activities of the respective stakeholders. Impacts of SCIP, as far as causality can be identified, lie in encouraging young people in their interest in science, increasing awareness of general public in science-related issues and explaining role of science in society and problems that science is facing. To maximise effects of science communication there is a space for national and regional authorities to play an integrating role. Given the concentration of SCIP actors, the City of Prague could aspire to develop its science communication policy in order to promote itself as a Central European centre of science. (shrink)

As State Colleges and Universities (SUCs) grow, they need to offer more services to the community. This is termed as community extension program, and colleges are required by law to have one. The community's needs must be met, and they must also be looked at. This assessment aims to figure out what the communities around J.H. Cerilles State College (JHCSC) need. Through the Peace and Order, Security, and Ability to Serve Enrichment (POSASE) framework, this assessment also (...) set up the framework for extending community services in SUCs. The study's results showed that the communities close to JHCSC needed more governance extension initiatives in the areas of public safety and security, as well as disaster planning and response. (shrink)

Divus Augustus Pater. The cult of divine Augustus under the rule of the Julio-Claudian dynasty -/- Summary The cult of divine Augustus was one of the most important phenomena of ideological nature under the rule of the Julio-Claudian dynasty. The crucial point of its development was the apotheosis conducted on 17 September 14 AD. The new cult was derived greatly from numerous borrowings from the rites of various gods of the Roman Pantheon. As divus, Augustus received a separate priest, a (...) private priestess, and a college of priests. The first flamen Augustalis became Germanicus. The holder of this title enjoyed many privileges. It seems unlikely, however, that flamen Augustalis controlled the entire cult of divine Augustus. This was the role of the emperor as both the supreme priest and the inheritor of political power. Sodales Augustales also had special cult functions. This religious fraternity had a mixed private-state character just like many of the institutions of the early principate. It was a cult college of gens Iulia and, most of all, of Augustus. From its beginning it enjoyed high prestige. The members of this religious fraternity were recruited among the Senate elite and the family of the emperor. Sacerdos divi Augusti occupies a different place in the priesthood established to worship Augustus. This female priesthood, despite its humble cult and political role, is of great interest to scholars. In spite of discerning investigations by researchers, there seem to have been only two priestesses in the Julio-Claudian dynasty – Julia Augusta, the widow of the creator of the principate, and Antonia Augusta. There is even no certainty that the latter had preformed the function at all. Augustus, as a god, was given a separate temple under a Senate decree. However, the construction work went slowly ahead. Therefore, divus Augustus was initially worshipped in other places of worship. At first, it was the temple of Mars Ultor. He was also worshipped in the sacrarium on the Palatine. One encounters certain difficulties when trying to identify the places of Augustus’ worship in Rome. Ultimately, there seem to have been two sacraria in the capital of the Empire. There is no certainty, however, whether yet another temple was located next to the templum novum divi Augusti on the Palatine. In trying to analyse the phenomenon of the divinity of the Roman emperors, and Augustus in particular, it is necessary to refer to the genesis of Emperor worship. Within the framework of official religion it is important to distinguish such elements as genius and numen. Although the consecratio act conducted by the Senate meant the crossing of the boundary between the human Augustus and the divine Augustus, it is important to remember that Augustus had prepared his apotheosis for a long time and already enjoyed divine honours during his lifetime. Certain elements of Augustus worship developed under his rule continued to exist for some time after the death of the creator of the principate. Augustus divinity was guarded by the law of maiestas. At the beginning of the rule of Tiberius it mostly protected divus Augustus himself. Gradually, despite some opposition, the law began to serve the ruling emperor. There is little certainty of how many cases were brought under the crimen laesae maiestatis against those who insulted the divine Augustus. The issue of trials for offending the law of maiestas is accounted for one-sidedly by ancient historians, which complicates the work of contemporary researchers. There is, however, no denying that for Tiberius (Augustus’ successor) the trials on the charge of maiestas turned out to be a trap. The cult of divus Augustus was approved throughout the Empire. Nevertheless, some weaker voices of opposition could be heard. These were present in the Senate circles cherishing the memory of the last defenders of the Republic, as well as among some ethnic and religious communities. The latter included Judaism and emerging Christianity. The political consequences of Augustus’ deification were very serious. He significantly contributed to the ruling of the Julio-Claudian dynasty for over 50 years. The main reason for that was the fact that in the Rome of that time the tradition of power succession was not yet well-grounded. Directly after the principate creator’s death, his consecratio took place – he was assigned priests and many godly honours and a temple was erected in his honour. These actions obviously took place under Augustus’ successor Tiberius who, during his rule, constantly tried to emulate the divine predecessor and referred to his decrees on numerous occasions. Tiberius was the emperor who contributed to the cult of his adoptive father to the greatest extent. However, one cannot fail to notice that his actions were somehow ambiguous. It has to be remembered that, in addition to his sincere respect for the divine Augustus, Tiberius also tried to use the authority of the creator of the principate to strengthen his power. This is exemplified by the motto imprinted on coins: DIVVS AVGVSTVS PATER. Caligula took a different approach to the Augustan cult. When assuming power after Tiberius, he was in a different position. The 20-year rule by Augustus’ successor greatly contributed to the strengthening of the idea of the principate ’s stability in the minds of the Romans. This allowed Caligula to pay less heed to the Senate aristocracy, as well as other institutional elements of the Republic. Under these circumstances, the cult of Augustus underwent modifications. Divus Augustus still remained at the heart of the religious propaganda of the Roman state and gens Iulia, but also other members of the family of the young Emperor received a number of honours drawing them closer to the world of gods. Drusilla, for that matter, was made a diva. By this, the idea of domus Augusta received a new confirmation. Caligula himself did not cease to participate in, and support, the rites performed to worship his divine grandfather. The available sources lead us to believe that Augustus constituted for the young princeps a role model and a character to which he often compared himself with. For Claudius, the use of the cult of divine Augustus was important as a tool to strengthen political power. But due to the fact that his personal links with divus Augustus were rather weak, Claudius focused on the cult of his grandmother Livia, Augustus’ wife. He also emphasised the function of sacerdos divi Augusti which his mother Antonia Augusta was to fulfil. Claudius faced the task of the ‘reconstruction’ of the cult of Augustus which had deteriorated, especially during the second part of Caligula’s rule. Claudius took a different direction in imitating Augustus than his two predecessors. Augustus’ model was very capacious, allowing him to find examples which could be adjusted to fit his own political goals and personality. Claudius avoided the stiffness characteristic of Tiberius and, at the same time, respected Augustus’ traditions which he Caligula inadvertently abused. Claudius’ attitude to Augustus is not quite clear. Undoubtedly he kept alive the memory of the first princeps, however, there is a lack of testimony about the new honours conferred on divine Augustus during the rule of this Emperor. Almost all of them concentrate around the person of Claudius or his family. There are, however, no honours conferred on the creator of the principate. This type of attitude caused the cult of divine Augustus to be eclipsed by the cult of the ruling Emperor. Nero, the last representative of the Julio-Claudian dynasty descended, unlike Claudius, directly from the line of Augustus. The new emperor deified his predecessor by using the model of Augustus’ apotheosis. In the first part of his rule he drew greatly from the Augustus model of exercising power. Nero ’s ideological platform seems to be the richest in comparison with other emperors of the Julio-Claudian dynasty. The tradition of links with divus Augustus was, however, only one of many different elements. With time, the tradition appeared to play a still smaller role. The departure from the Augustus model took place on many levels. Some of the steps were very radical, whereas others were less significant. The most serious was the elimination of the members of gens Iulia and gens Claudia, and those who could prove their kinship with both the houses. The devastation in Nero ’s closest family put an end to the concept of domus Augusta. Formally, the Emperor did not renounce the divine creator of the principate but, in practice, the idea of the new domus Augusta no longer aimed at presenting Augustus’ descendants united in a single family. Nero was now alone and any creation of ideological concepts of power under those circumstances had to be based around him. These actions ended in disaster. By giving up the Augustan model, Nero lost the support of the army and, as a result, lost power. Apart from the worship of the state religion in the capital, divus Augustus was the subject of a provincial and municipal cult. Here, the worship of divine Augustus was often a continuation, sometimes in an extended form, of the honours Augustus had been granted during his lifetime. In the cult of divus Augustus, in the provinces one can observe a mutual interweaving of elements copied from the capital model and local traditions. The beginning of the provincial cult of Augustus dates back to the rule of Tiberius. The crucial point for the establishment of the provincial cult in the West was the request of the citizens of Hispania Tarraconensis to build a temple for divine Augustus. It is important to emphasise here that he was appointed on a local initiative. In the East, the genesis of the provincial cult is related to the functioning of koinon. In comparison with the western regions, the cult here was characterised not only by longer history but also an extensive system of priesthood and rich ritual. The intensity of development of municipal and private cult in the West depended on the level of social and economic development of the regions. It assumed the most complex forms in the provinces with well-developed city life – generally in the eastern provinces. Whereas the cult of divine Augustus in the western municipal provinces was similar in character to the cult of the principate’s creator in Italy. The greatest testimony to the cult’s development comes from relatively strongly romanised and, at the same time, the wealthiest regions which had been part of the Empire for a long time. These included the mainly proconsular Africa, Spain and Narbonese Gaul. The sources coming from these regions constitute not only an illustration of the development of the cult of divine Augustus and members of domus Augusta, but are also a sign of the processes of romanisation of great numbers of city populations. It is necessary to note that outside Rome we do not encounter an isolated cult of divine Augustus. Whenever we deal with information concerning temples or rituals dedicated to the deified creator of the principate, other members of the family are also worshipped. In fact, during the whole rule of the Julio-Claudian dynasty we actually deal with the cult of divine Augustus in close association with the worship of domus Augusta – domus divina. (shrink)

At Temple College, a community college in Texas, the administration forced Kerry Laird, a literature and composition professor, to remove from his office door the quote from Friedrich Nietzsche "Gott ist tot." The college says that to leave the phrase up would offend others and constitute an endorsement of the phrase. Laird, Cary Nelson, the national president of the American Association of University Professors, and William O. Stephens, chair of the American Philosophical Association Committee for the (...) Defense of the Professional Rights of Philosophers, see the ban as a violation of academic freedom and a double standard, since many other faculty members are permitted to display pro-religion statements and images on their doors. Stephens said that ever the ancient Athenians put Socrates to death for expressing non-traditional views, great philosophers have often caused offense. (shrink)

The purpose of this narrative study is to trace the process whereby Israeli Academic College of Education principals lead Professional Learning Communities (PLC) for teacher educators. The focus is on the unique situation in which various different roles (administrator/facilitator/learner) are integrated during this process. Seven semi-structured interviews underwent a thematic analysis that indicated two parallel journeys of PLC leadership: a journey of co-leading a PLC and cultivating creativity, and a journey of crystallizing intellectual identity and image through leading PLCs. (...) The discussion provides an interpretation of these two journeys in accordance with both social-cognitive and social-classification theories. It examines the findings in terms of three types of tensions and fears typical of PLC leaders, as reflected in the literature. (shrink)

Over 60% of all epidemics have a zoonotic origin, that is, they result from the transmission of infectious diseases from animals to humans. The spill-over of diseases often happens because humans exploit and use animals. In this article, I outline the four most common interfaces that favour the emergence and spread of zoonotic infectious diseases: wildlife hunting, small-scale farming, industrialised farming practices and live animal markets. I analyse which practices serve human food security – and thus have a non-trivial purpose (...) – and which predominantly have an economic purpose or serve as a symbol of wealth. I conclude that many practices that increase the risk for zoonotic infectious disease outbreaks actually do not contribute to the survival and food security of humans. I make two arguments in turn. First, I argue that in cases where the consumption and use of animal products does not contribute to the food security of a population, then this population has a duty to abstain from them, since they impose a grave and avoidable risk to themselves as well as to innocent third-parties. However, some communities must sometimes rely on practices that increase the risk of emergence and transmission of zoonotic infectious diseases, because they have no healthy alternatives. That is, the food security of the local population depends on the consumption and use of risky animal products. The second argument I advance is that, in such scenarios, the international community has a duty to provide the communities concerned with alternative food options, as well as economic and educational opportunities and technologies, in order to reduce the spill-over risk of infectious diseases. Given that abstention from such practices contributes signifcantly to the public good and benefits the international community, the latter has a corresponding duty to provide local communities which abandon such practices with alternatives. (shrink)

The “local food” movement has been growing since at least the mid- twentieth century with the founding of the Rodale Institute. Since then, local food has increasingly become a goal of food systems. Today, books and articles on local food have become commonplace, with popular authors such as Barbara Kingsolver1 and Michael Pollan2 espousing the virtues of eating locally. Additionally, local food initiatives, such as the “farm- tofork,” “Buying Local,” and “Slow Food” have gained a (...) strong international following with clearly visible impacts on the food industry and policy. The numbers of local farmers’ markets, community- supported agriculture projects, and community gardens have been on the rise steadily since 1994. (shrink)

Many advocate practices of ‘local food’ or ‘locavorism’ as a partial solution to the injustices and unsustainability of contemporary food systems. I think that there is much to be said in favor of local food movements, but these virtues are insufficient to immunize locavorism from criticism. In particular, three duties of international ethics—beneficence, repair and fairness—may provide reasons for constraining the developed world’s permissible pursuit of local food. A complete account of why (and how) the fulfillment of (...) these duties constrains locavorism will require extensive empirical evidence about the relationship between agricultural demand-led industrialization, international trade (rules), and local food practices. In this paper I can only gesture at some of this evidence and, for that reason, my policy prescriptions are merely provisional. Instead, the upshot of this paper is that advocates of locavorism ought to be attentive to the empirical-dependence of the moral permissibility of their projects. As local food ‘scales up’—and comes to be embraced as a goal of political communities—these concerns should receive even greater attention. (shrink)

The study aims to investigate indigenous communities’ socio-economic impacts as a result of the COVID-19 pandemic and to explore coping strategies to aid in the socio-economic recovery of indigenous communities. -/- The COVID-19 pandemic has had a negative impact on indigenous people's livelihoods, including employment and income, education, the migration of people, health, and natural resources. As a result of COVID-19, the indigenous people have lost their employment and income. The price of fish has decreased, which has lowered their ability (...) to make money from selling fish. Migrant workers returned home because they were concerned about their health security and many lost their jobs. Schools were closed because of COVID-19 and this increased education inequality. Health was impacted because it was difficult to access health services due to restrictions on travel. Returning migrants have pressured forest and fishery resources through increases in the number of fishers, which include the migrants who have returned to their own village. -/- The RGC, rural communities and indigenous communities have taken a number of measures to cope with the issues stemming from COVID-19. Migrant workers tried to look for local employment, used fishing to supplement household consumption and income needs, and often borrowed money from neighbors. Students attempted to use e-learning that was facilitated by the government; teachers visited some students’ homes, and older students supported younger students in their school lessons. In terms of health, home visits were facilitated for pregnant women, and people sought permission to travel to health centers. After giving birth, families were visited and offered a small amount of money to support their basic needs. To deal with natural resources, some coping strategies included smaller groups of patrolling teams, support grants from CSOs for forest and fishery resource patrolling, drone delivery to community fishery committees, and requesting community members to report illegal fishing or logging. And to minimize the spread of COVID-19, a mandatory 14-day quarantine at home was imposed on all people returning to the village. (shrink)

The developments along the Mekong River, including in Cambodia, have boomed. There were 755 dams. Of these, 537 have been completed, and 152 have been planned or proposed. Of these, 52 were under construction, and 14 have been canceled or suspended. Of these dams, 392 were hydropower, 337 were irrigation, and 26 were other types (CGIAR, 2015). Even though some officials saw economic development as a result of the hydropower dam, the negative impacts of hydropower dams were seen by many (...) local experts and NGOs. The negative impacts include reduced fishing stocks and exacerbated socio-economic issues (Asia and the Pacific Policy Society, 2022). Experts have conducted some research on ecosystems and livelihoods, but there has been a lack of studies conducted by local communities to investigate their cross-border impacts as a result of the hydropower dam, despite the fact that local communities have been facing issues as a result of the Mekong Development. The community research protocol was developed to improve local communities' understanding of their local contexts and their confidence in negotiating with decision-makers and policymakers to address and respond to their needs and the findings of studies on local planning for sustainable community development. The paper aims to guide community leaders and staff in conducting community research on transboundary impacts on fisheries resources, ecosystems, and the livelihoods of local communities using their knowledge. (shrink)

This study aims to describe the cultural strategy of the Buginese people of Pagatan (one of ethnic group in Indonesia) in preserving their local wisdom living in a multicultural society. This research was conducted using qualitative descriptive method through three methods of data collection i.e. in-depth interview, observation and literature involving community leaders and ordinary people as informants. The historical-interpretative method was used to analyze the Data. The findings from this study indicate that the people of Buginese-Pagatan use (...) two strategies to preserve their Buginese identity in a pluralistic society i.e. the strategy of interaction patterns and the use of ethnic symbols. In the strategy of interaction patterns, they implement adaptive and inclusive interaction patterns. This strategy is represented by the mastery and the use of regional languages in addition to the Buginese language, cross-ethnic marriages, and participation in social activities. While in the strategy of using ethnic symbols, they form a distinct identity from the one existing in Sulawesi. This strategy is represented by the use of ethnic symbols such as wearing Bodo clothes, bone cap in the rituals of marriage and moving in new houses, preserving the ancient model of Buginese house for settlement, and forming a new cultural identity called Maccera Tasi. This research has identified local values preserved and held by its people as cultural strategies in building a harmonious society. We believe that the cultural strategies are useful not only to form a united, dignified and civilized local community of Indonesia, but also to serve as a model for other cultures to preserve their local wisdom. (shrink)

The emergence of the Internet and various forms of virtual communities has led to the impact of a new social space on individuals who frequently replace the real world with alternative forms of socializing. In virtual communities, new ‘friendships’ are easily accepted;however,how this acceptance influences cultural identity has not been investigated. Based on the data collected from 443 respondents in the Republic of Serbia, authors analyzethisconnexion,as well as how the absorption of others’ cultural values is reflected on the local (...) cultural values. The results show that the adoption of others’ cultural values diminished the bond with the local community. The present paper adds to the theory of virtual communities by examining the relationship between the acceptance of an unknown person in a virtual community and its effects on cultural identity. This study contributes to the clarificationof the impact that virtual networking has on cultural identity. (shrink)

The purpose of this research is to determine the variables influencing college students' engagement in swimming activities, as well as the significant themes that often appear in these occurrences. A descriptive research design was used to identify the factors influencing college students' perception of participating in swimming activities. Descriptive research is a type of nonexperimental study that aims to describe the features of phenomena as it occurs. It was found out that participating in swimming activities provides various benefits, (...) some of these include helping build endurance, muscle strength, and cardiovascular fitness, enhanced swimming skills, and maintaining a healthy weight. As a result, the implementation of active recreational activities in schools must be reinforced, not simply for the purpose of participation, but also because students are driven to do so. And these activities must be carried out not just on school grounds, but also at home and in the community. (shrink)

Responsive governance during the COVID-19 pandemic became a severe challenge for countries worldwide. With a relatively poor healthcare structure, Bangladesh performed moderately well in managing the first wave of the pandemic (March-December 2020). With substantive policy and decision-making support from the Centre, local governments collaborated with various relevant actors to enhance their pandemic-related services. In this background, this research used an integrative framework to study a case of local-level collaborative governance-the Saturia Model. Based on the authors' experience, reflections (...) and review, this analysis explores various socioeconomic and environmental factors behind the effectiveness of this collaboration in containment policies and providing support services to vulnerable groups. Findings indicate that coordination between state and non-state actors, resource mobilization, access and communication, community engagement and the adaptative capacity of the government are vital for making such collaborations work in a crisis. The lessons are valuable for prospective understanding and policy interventions. (shrink)

The study dealt with the present socio-economic status, perceptions and opportunities of maximizing the benefits of ecotourism to the local community. Responses from the local community, officials of the local government unit, and visitors using quantitative and qualitative method, particularly the inductive approach through survey, observation and interview was used. Local community involvement in tourism activity is limited to tour guiding, particularly the children, while the rest of the population are into farming, fishing (...) and harvesting forest products. The park was categorized as “Protected Landscape” under Republic Act 7586, now gaining its popularity and one of the fastest growing ecotourism sites in the Philippines is under the supervision of a private company. Visitor satisfaction and potential risk on environmental degradation were observed due to lack of regulation on the observance of carrying capacity. Tourism Action Plan for the destination was prepared but allocation for project for the local community that would contribute to their present socio-economic status was not evident. The geographical unit of the destination, its breath-taking view, the presence of various distinct flora and fauna made it to be labelled as the “Hidden Paradise and Mystical Eco-tourism in Nueva Ecija”. Sustainability in ecotourism, involves the participation of the communities that protect and manage the natural resources, cultural and indigenous knowledge and practices, environmental education and ethics. Community involvement equipped with proper education and conservation awareness, training, and employment opportunities may sustain the destination and enhance visitor satisfaction. (shrink)

Place-based education is founded on the idea that the student’s local community is one of their primary learning resources. Place-based education’s underlying educational principle is that students need to first have an experiential understanding of the history, culture, and ecology of the environment in which they are situated before tackling broader national and global issues. Such attempts are a step in the right direction in dealing with controversial issues in a democracy by providing resources for synthesising curriculum though (...) theory (curriculum content, including traditional subjects) and practice (practical learning as experiential education). Nevertheless, many place-based accounts discount Indigenous conceptions of place, which are integral to Indigenous ways of knowing, being and doing, especially in relation to the ontological relationship to Land and Country. Indigenous philosophy has the potential to inform what place-based education means by students developing a ‘sense of place’ when engaging with local communities as their ‘own’ place. In this article we re-imagine the community of inquiry as a place-responsive pedagogy by learning from Indigenous philosophy, and recentring Indigenous notions of place in experiential learning. In addition to exploring the pedagogical potential of a place-responsive account of the community of inquiry, we look to the implications for teacher preparation. (shrink)

The purpose of this study was to examine effective communication management and the performance of tertiary institutions in Cross River State. Three hypotheses were formulated to guide the study. The study adopted a correlational design and was conducted using Cross River State College of Education, Akamkpa as case study. A proportionate stratified random sampling technique was used to select 30 per cent each from a total of 176 academic staff and 215 Non-academic staff in the institution. A total of (...) 53 Academic and 66 Non Academic Staff were selected resulting in a sample of 119 participants. A questionnaire titled Effective Communication Management and Performance of Tertiary Institutions Questionnaire (ECMAPOTIQ), was used as the instrument for data was used as the instrument for data collection. The collected data were analysed and the hypotheses were tested using Chi Square test of tested using Chi Square test of independence at .05 level of significance. The findings revealed that effective communication management has a significant relationship with human relationship, work performance and organizational goal attainment. Based on these findings, it was concluded that effective goal attainment. Based on these findings, it was concluded that effective communication leads to good human relationship, promotes work performance and organizational goal attainment. It was recommended among others that educational managers should make efforts to adopt good communication skills to enable them communicate effectively; workers should adopt proper communication strategies if they are to promote good relationship among co-workers and the managers. (shrink)

The educators of the 21st century have a great task ahead. In today’s world, the educators are expected to have a great deal of professional and personal qualities, and extraordinary skills. This descriptive-correlational study aimed to determine perceptions of college students on a well-qualified educator. The study included 123 selected college students from different colleges in Central Luzon, Philippines using a convenience sampling technique. As data collection tool, a questionnaire prepared by the researcher team was used. Some of (...) the findings of the study include: (1) the respondents answered agree on the context of professional and personal qualities that a teacher should have; (2) while in terms of the skills exhibited by an educator, it got an answer to Very Satisfactory. We also found significant differences in professional qualities, learning and innovation skills and life and career skills when grouped according to the respondent’s profile. There was low-to-moderate evidence of the relationship that existed between the qualities and skills of an educator. The results further confirmed the relationship through regression analysis and found that communication skills affect the qualities of an educator. Based on the results, we discussed and recommended practical suggestions on professional, personal and skills improvements of an educator. (shrink)

Ethical issues that arise because of the transcendent power of globally oriented corporate entities vis-a-vis local communities. Common problems arise from plant closings and automation, here illustrated by cases of restructuring in Indiana. Public use limitations on "eminent domain" decisions are considered. Then attention turns to the lack of constraints available to regulate decisions made by a transnational corporation. Limited applicability of Rawls's contract theory is noted, then ten real-world space-time situations are reported that involve legally uncontrolled harm to (...) locals due to supra-community control by a corporation. (shrink)

The paper presents the findings of ethnographic research and a survey of a Local Exchange Trading Scheme in North-East London and asks the question of whether the scheme delivers on the aims and objectives of its members. The research found that whilst its members express a strong politically motivated desire for an alternative to the prevailing economic system, the LETS scheme falls short of delivering on those ambitions. The findings raise the question of whether there is anything intrinsic to (...) this form of local community currency that leads it to be more inclusive, egalitarian and fair. (shrink)

Human sociality can be understood as an organism. Almost all aspects of life can be understood in a phenomenological sense as part of a life system. An appropriate perspective for considering life and interpreting social reality is extremely important in determining direction and orientation for mankind. The aim of this paper is to describe a new methodological point of view discover the natureof social reality in the study culture in Indonesia. In taking a perspective from philosophy, this research endeavors to (...) provide a new perspective in the study of local wisdom in Indonesia. This paper presents a philosophical view on approaching the study of local wisdom (kearifanlokal): first, human social systems are systems of self-reference; second, human sociality is actualized in social systems that are contingent. Local wisdom can be viewed as a social and communicative system that produces a kind of self-organization (autopoesis) within a culture. (shrink)

Recent studies of peacebuilding highlight the importance of attending to people’s local experiences of conflict and cooperation. This trend, however, raises the fundamental questions of how the local is and should be constituted and what the relationship is between institutions and individual actors of peace at the local level of politics. I turn to Hannah Arendt’s thoughts to address these issues. Arendt’s thinking provides a distinctive form of realism that calls for stable institutions but never depletes the (...) spirit of resistance. Peacebuilding guided by this insight seeks to enable parties in conflict to voice their competing opinions by acting agonistically in public and to help them align their disruptive yet creative voices with a desire to establish and sustain common institutions. Thus, Arendt’s thinking not only offers a way to increase sensitivity to local differences but also to provide direction to the politics of resistance. In the end, it offers a balanced insight into peacebuilding and local agency beyond the contemporary liberal and critical approaches to peace. (shrink)

The study aimed to identify the reality of the use of social networks in the technical colleges in Palestine, where the variables of social networks were included. The analytical descriptive method was used in the study. A questionnaire consisting of (12) items was randomly distributed to college workers Technology in the Gaza Strip. The sample of the study consisted of (205) employees of these colleges. The response rate was 74.5%. The results showed a high degree of approval for the (...) dimensions of the social networks and a relative weight (74.15%) according to the perspective of the employees of the technical colleges in the Gaza Strip. The results of the study showed that there is a high level of social networking areas (site management and Website Content) in the technical colleges in the Gaza Strip. The field of site management ranked first with a relative weight of 74.91%, and second and last (Content Site) with a relative weight (73.38%). The results showed that there were differences between colleges in the use of social networks where the results showed that the most common colleges used these networks (UCAS) and the least used is (GTC). The results showed no differences between male and female employees in the use of social networks in technical colleges. The researchers suggest a number of recommendations, including: the need to raise awareness of the importance of Facebook and other social networking sites, through the holding of courses for employees in technical colleges, and to identify the ways to optimize the use of such sites, and the benefits of this use, and reflected positively on technical colleges. And the adoption of dealing with the various social networking sites as a reality, and the Palestinian and Arab technical colleges, use them in accordance with the objectives of technical colleges. Advise the Department of Technical Colleges to devote time to their presence on social networks to follow the public and respond to their queries. There is a need for the attention of decision-makers in technical colleges in social sites, because they are considered an important and effective means of communication, and the link between beneficiaries and decision-makers. There is a need to promote the use of modern electronic means of work and the need to increase the link of customers to the college through electronic services. (shrink)

The terms “patriotism” and “nationalism” are distinguished historically, conceptually, and geographically. Historically, patriotism is shown to have roots in the classical republican tradition of political thought, according to which citizens should give priority to the common good of their political or civic, as distinct from national, community. Conceptually, it is argued that patriotism is best understood as a political philosophy, an account of the form or forms of dialogue that citizens should engage in when responding to their conflicts, whereas (...) nationalism is a political ideology, an account of the kinds of things that citizens should be saying within those dialogues, in particular, when they take the form of negotiation. Patriotism, then, is that political philosophy which endorses the maxim “conversation first, negotiation second, force third,” since conversation between citizens has the best prospects for realizing and developing the common good. Nationalism, by contrast, is the ideology of those who, when it comes to political negotiations, give the greatest weight to the needs of their national community. Finally, regarding geography, patriotism is shown to be concerned with the jurisdiction of the state, whereas nationalism emphasizes the permanent and sharply demarcated territory where the national community is located. The chapter then concludes with the recommendation that we all need to affirm a global patriotism, alongside the more local forms. (shrink)

In the information-technology powered twenty first century a general demand for more effective communication is driving people to question the present, examine the past and to prognosticate the future. The ‘unique global media-information system’ - the Internet- is the central fact of a vast new complexity of communication that is driving social-economic-political-religious- technological change at a rate never experienced before. The premise of this paper is that the Internet can be better understood as the first complex global media with both (...) democratic and authoritarian possibilities, the full extent of which are still emergent. In respect of the symposium question, this paper suggests that Internet embedded communication theory can be used progressively as part of a widening and deepening approach to intercultural conversation, dialogue and debate. In theory, the localising nature of the Internet can be read as part of a greater movement towards communitarian and community centred self-governance, local democracy and social self-sufficiency. There is considerable scope for a new theory of society founded in localised ‘in-community communication’ practice supported by international human rights and effectively responsive to the asymmetric global information environment and congruent with newly democratised local structures of self-governance. (shrink)

Η εύληπτη εκπαιδευτική προσέγγιση ότι «κληρονομιά είναι οτιδήποτε θέλεις “εσύ” να διατηρηθεί για τις επόμενες γενιές» κλονίζεται στην ερώτηση «όλα όσα μας παραδίδονται από τους προγόνους μας αποτελούν μια προς διαφύλαξη κληρονομιά, εφόσον “εσύ” το αποφασίσεις;». Εκφάνσεις «βαρβαρότητας» που διασώζονται σε προγενέστερες εθιμικές πρακτικές θα μπορούσαν άραγε να αποτελέσουν στοιχεία ΑΠΚ προς διαφύλαξη; Η παρούσα εργασία επιχειρεί μια πρώτη ανίχνευση του σύνθετου αυτού θέματος. Περιπτώσεις μελέτης από τον ελληνικό και διεθνή χώρο διερευνώνται με κριτήρια αξιολόγησης τα αναφερόμενα στη Σύμβαση για (...) τη Διαφύλαξη της ΑΠΚ (UNESCO, 2003). Βάσει αυτών δεν γίνονται αποδεκτές εθιμικές πρακτικές ΑΠΚ που αναζωπυρώνουν μνήμες βίαιων συγκρούσεων μεταξύ μελών κοινότητας/κοινοτήτων, αποκλείουν με βίαιο ή/και υποτιμητικό τρόπο μέλη εξαιτίας του φύλου, της ηλικίας, της επαγγελματικής ιδιότητας, ή του σεξουαλικού τους προσανατολισμού, καθώς και εθιμικές πρακτικές που περιλαμβάνουν κακομεταχείριση ή/και βασανισμό ζώων. Η εφαρμογή των παραπάνω στην πράξη παραμένει αχαρτογράφητο πεδίο. Απαραίτητες φάσεις μιας συστηματικής μελέτης αποτελούν α) η αναγνώριση και η ευαισθητοποίηση των τοπικών κοινωνιών και του ευρύτερου κοινωνικού συνόλου για τις αξίες της ΑΠΚ, β) η έρευνα, τεκμηρίωση και αξιολόγηση των επιμέρους στοιχείων της, γ) η υποστήριξη των διαδικασιών μεταβίβασής της στις νεότερες γενιές, μέσω της τυπικής και μη εκπαίδευσης, δ) η ανάδειξη της σημασίας της σε τοπική, περιφερειακή, εθνική ή/και παγκόσμια κλίμακα. Η ΑΠΚ μετεξελίσσεται και μεθερμηνεύεται διαρκώς μέσω σύνθετων κοινωνικών και πολιτισμικών διεργασιών. Απόπειρες εξαναγκασμένης «αναβίωσης» κάποιας «αυθεντικής» ή «γνήσιας» μορφής μιας έκφανσής της συχνά αποτυγχάνουν, ενώ παραμένουν μεθοδολογικά μετέωρες. Ο ρόλος της εκπαιδευτικής διαδικασίας στην ανάπτυξη σχετικών ηθικών αρχών και κριτικής σκέψης είναι κρίσιμης σημασίας. Λέξεις κλειδιά: άυλη πολιτιστική κληρονομιά, κοινότητες, αξίες, ηθικές αρχές, εκπαίδευση For educational purposes, we may claim that heritage is whatever each one of us individually or collectively wishes to preserve and pass on to the next generation. However, should violent or other disturbing forms of expression, preserved in customary practices, be safeguarded, if the whole or part of the ‘community’ decides to do so? The present paper attempts a first approach to this complex issue. Case studies from Greece and worldwide are investigated and appraised on the basis of the Convention for the Safeguarding of the ICH (UNESCO, 2003). According to the Convention criteria, customary practices that refresh memories of violent conflicts between members of the community/communities, or exclude members with an aggressive and pejorative way because of their gender, age, professional status or sexual orientation, as well as practices involving the ill-treatment and/or torture of animals do not deserve safeguarding. The implementation of the above criteria in practice, however, remains an uncharted area. A systematic study, therefore, should: (a) include initiation, recognition and awareness on the part of local communities and societies about the values of the ICH; (b) promote research, documentation and evaluation of heritage components; (c) support the transition to the younger generations through formal and non-formal educational events; (d) highlight its importance on the local, regional, national and international context. ICH is evolving and constantly interpreted through complex social and cultural processes. Any forced attempt to revive an ‘authentic’ or ‘genuine’ version of ICH cultural expression, besides appearing fake, is methodologically challenged. The role of education in developing ethical principles and a critical approach to heritage is undoubtedly crucial. Keywords: Intangible cultural heritage, communities, values, ethical principles, education. (shrink)

This article seeks to establish the development of rural communities, with up to 500 inhabitants, with the creation of a Rural Tourism Development Forum and a Tourism Development Program with local identity. It is proposed to capitalize on cultural assets and local knowledge, to strengthen the profile and tourist circuits, local services and enterprises, agro-tourism and other related economic and social activities. The objective is to contribute to territorial tourism development from an innovative perspective, which, based on (...) the efficient use of local resources, generates employment and improves the quality of life of its inhabitants, capitalizing on the advantages of tourist activity. The methodology used consisted in analyzing the problems of local development, identifying the obstacles and conceiving tourism as a solution and sustenance that allowed the elaboration of the model. (shrink)

Crime is a community problem and not just a police problem. The adoption and implementation of Community Policing (CP) in the 1980s, was perceived as departure from the professional ‘police-as- expert’ model of public safety that had been dominant for a long time. The CP approach is designed to engage the community as an equal partner in solving local crime and other security threats within the community. The CP concept was introduced in Kenya in the (...) 1990s.Though it had informally existed in Nairobi County in Ruai and Kasarani estates much earlier.Its formal implementation only gained currency after the Post Election Violence of 2007-2008 in Kenya. Among the factors influencing its implementation in Kenya has received considerable research attention, but challenges impacting on its implementation in Nairobi County have not been adequately documented. This study aimed to fill this research gap by focussing on community factors. The overall research objective sought to determine the influence of community factors in effective implementation of community policing within Nairobi County. The objective of the study was to assess how community factors influence implementation of community policing within Nairobi County. The research findings adds to the body of knowledge, while also benefitting policy makers dealing with issues of community policing. It will also benefit other researchers exploring different aspects of community policing as a strategy to combat crime in city neighbourhoods. The research established that community factors are among the most influential factors that hamper smooth implementation of community policing in Nairobi County. The study recommends that the community needs to be educated on community policing initiatives and how to manage community factors that affect the implementation of CP in Nairobi County. (shrink)

The study aims to identify the impact of the use of artificial intelligence techniques in improving the outputs of higher education in Business Administrative Colleges in the universities under study that formed the research community. As for the sample, it consisted of (130) academic respondents in these universities under study. The research concluded that there is a statistically significant effect of using artificial intelligence techniques (expert systems, neural networks) in improving the outputs of higher education in Business Administrative Colleges (...) under study. It was found that artificial intelligence technologies contribute to finding graduates who are able to carry out the process of modernization and professional development in various fields of work. These technologies also contribute to improving and developing the skills of graduates in the labor market and providing them with new skills and characteristics to perform their duties. The research recommended increasing interest in the expert systems technology by the universities under study because of its scientific importance in improving the outputs of higher education by reformulating them in the form of programs embraced by computers. (shrink)

The study zeroed in on the perception of college students who are exposed to sights of poverty in their immediate environment. The student-participants were asked to provide their perception, understanding, and behaviour towards poverty using the photographs that they took on their own. In qualitative research practice, this methodology is called photo elicitation. It was revealed, among others, that the participants have shown negative perceptions about poverty. They strongly felt bad about each photograph that they took and what these (...) images portrayed. The participants visualized their community and thereby weaved analyses and opinions that encroached on various philosophical and sociological theories. There are four interrelated dominant images that were drawn: exteriority image, dirt-poor image, victim-blaming image, and hand-to-mouth image. (shrink)

Edmund Burke grounds politics and the state over the pre-political network of moral relations, starting from the family, evolving, through the village, the parish and the town, up to the class and corporation, finally arriving to the nation. These subordinate affections can be geometrically imagined as expanding circles of belonging and, though strictly linked to the state, they are not reducible to it, nor can the state replace them. In Burke’s vision, the state of civil society is humankind’s state of (...) nature, for the reason that man is always, and since ever, a member of a community: we are from somewhere, Burke seems to suggest. Thus, politics is grounded in morality, and morality, in turn, is based on God’s will, which within history takes the form of natural law. The French Revolution, on the contrary, has broken the spontaneity of interactions between individuals and intermediate groups, eventually establishing the Terror. (shrink)

Edmund Burke grounds politics and the state over the pre-political network of moral relations, starting from the family, evolving, through the village, the parish and the town, up to the class and corporation, finally arriving to the nation. These subordinate affections can be geometrically imagined as expanding circles of belonging and, though strictly linked to the state, they are not reducible to it, nor can the state replace them. In Burke’s vision, the state of civil society is humankind’s state of (...) nature, for the reason that man is always, and since ever, a member of a community: we are from somewhere, Burke seems to suggest. Thus, politics is grounded in morality, and morality, in turn, is based on God’s will, which within history takes the form of natural law. The French Revolution, on the contrary, has broken the spontaneity of interactions between individuals and intermediate groups, eventually establishing the Terror. (shrink)

Transdisciplinary research challenges the divide between Indigenous and academic knowledge by bringing together epistemic resources of heterogeneous stakeholders. The aim of this article is to explore causal explanations in a traditional fishing community in Brazil that provide resources for transdisciplinary collaboration, without neglecting differences between Indigenous and academic experts. Semi-structured interviews were carried out in a fishing village in the North shore of Bahia and our findings show that community members often rely on causal explanations for local (...) ecological phenomena with different degrees of complexity. While these results demonstrate the ecological expertise of local community members, we also argue that recognition of local expertise needs to reflect on differences between epistemic communities by developing a culturally sensitive model of transdisciplinary knowledge negotiation. (shrink)

This article attempts to open the debate on a territorial development perspective that fixes the interest in organized territories that are characterized by the existence of a community with a local identity, politically and administratively regulated. We conceive these territories as subjects of development promotion interventions. For this we propose a model for the creation of Municipal Development Forums, which with the participation of local actors, can generate a tailor-made Local Development Program. The development program will (...) consider a diagnosis of the productive profile of the territory and its relationship with the characteristics and origin of goods or services consumed at the municipality. Based on the diagnosis, the causes of the decoupling between the local production system and consumption needs can be detected. And with this, find a way to readjust local production systems to meet the demand for goods and services of the inhabitants, generating new companies and encouraging local consumption. (shrink)

The present paper is an attempt at examining the value configuration and the socio-demographical profiles of the local political elites in four countries of East-Central Europe: Romania, the Czech Republic, Bulgaria, and Poland. The treatment is a comparative one, predominantly descriptive and exploratory, and employs, as a research method, the case-study, being a quite circumscribed endeavor. The cases focus on the members of the Municipal/Local Council in four towns similar in terms of demography and developmental strategies (i.e. small-to-medium (...) sized communities of around 35,000 inhabitants, with economies largely based on food industry and commercial activities): Tecuci (Galați county, Romania), Česká Lípa (Liberec region, Czech Republic), Targovishte (Targovishte province, Bulgaria), and Oleśnica (Lower Silesia province, Poland). Hypothesizing that the local elites of the former Sovietized Erurope tend to differ in outlook, priorities, and value attainment, as compared to their Western counterparts, the paper considers the former’s attitudes and perspectives in regard to seven values: a series of values customarily connected with the concept of ‘democracy’ (i.e. citizen participation, political conflict, gradual change, economic equality), state intervention in economy, decentralization and increased local autonomy, cultural-geographical self-identification. The study uses, as well, five models of value attainment in what concerns the ‘ideal portrait’ of the local councilor (Putnam 1976): ethical, pragmatic, technocratic, political, and gender. According to the results of a study applying a standard written questionnaire among the local councilors of the three communities in the period December 2010-February 2013, the paper distinguishes among three corresponding types of local elites: (1) ‘predominantly elitistic,’ (2) ‘democratic elitist,’ and (3) ‘predominantly democratic,’ following two types of explanation accounting for the differences among the four cases: the legacy of the defunct regime and the degree of administrative decentralization. (shrink)

The viewing patterns of Global Television in Nigeria seem to have undermined the objectives of local media content in the Nigerian media industry. This paper was designed to examine the factors that indicate that global television affect the development of Nigeria’s local content and why most Nigerians prefer to watch global television programmes at the expense of local television programmes even in the wake of assumed improved local contents in the Nigerian media. The study adopted observational (...) and quantitative methods of acquiring data on reasons why most residents in Nigeria prefer to view foreign programmes and how television viewing of global contents from the foreign stations has affected the development of local media content. The questionnaire was the instrument adopted for eliciting data from primary sources who are television viewers in Nigeria. This study proposed and distributed 300 but recovered 267 copies of the ‘Global Television versus Local Television Viewing’ questionnaire to randomly selected members of the population in Calabar, Cross River State. A review of secondary sources including books and articles on television viewing in Nigeria was carried out. The quantitative data was analysed using simple tables and percentages. Findings revealed that a significant number of Nigerians prefer to watch global television programmes because of their intrinsic interest and creative nature including the educational, informational and entertainment value advantage of the programmes over their local counterparts. The study recommends that the states and federal governments in Nigeria should inject more funds into revitalization of local television stations and should employ more experienced and retrain old television staff in their respective television stations in order to improve on the quality and patronage of local content in the Nigerian media. (shrink)

The tracer study for the Bachelor of Science in Business Administration (BSBA) degree with Business Economics (BE), Financial Management (FM), Human Resource Management (HRM), and Marketing Management (MM) of the School of Business Administration (SBA) tracks and gathers information about the career outcomes and experiences of graduates of the degree program. This study focuses on determining the employment opportunities pursued by the graduates of 2018–2022, as well as exploring the influence their education from the SBA of San Isidro College (...) (SIC) has had on their careers. Through this tracer study, valuable insight has been gained into the effectiveness of the SBA's BSBA program offered by SIC and its graduates' overall success and impact in the job market. The lack of respondents in the BE major suggests a need to revisit and modify the curriculum and marketing efforts to generate more interest among potential students. The FM, HRM, and MM major should be capitalized and sustained to maintain the positive momentum. The study's findings show a mix of employment outcomes for graduates, with opportunities for both early career growth and long-term employment. The program equips graduates with a diverse skillset for various job levels and industries. Most graduates find employment within the province, implying effectiveness in equipping them with the necessary skills. However, the distribution of salaries suggests potential issues with the job market or degree value, requiring further investigation. The program has successfully developed graduates with communication, human relations, and entrepreneurial skills but may need improvement in marketing management, problem-solving, and critical thinking. The study concludes that graduates have higher communication skills but lower problem-solving and critical thinking skills, emphasizing the need for curriculum modifications and additional support to improve overall skills. (shrink)