We characterize a type of functional explanation that addresses why a homologous trait originating deep in the evolutionary history of a group remains widespread and largely unchanged across the group’s lineages. We argue that biologists regularly provide this type of explanation when they attribute conserved functions to phenotypic and genetic traits. The concept of conserved function applies broadly to many biological domains, and we illustrate its importance using examples of molecular sequence alignments at the intersection of evolution and cell biology. (...) We use these examples to show how the study of conserved functions can integrate knowledge of a trait’s causal effects on fitness and its history of natural selection without invoking adaptation. We also show how conserved function provides a novel basis for addressing objections against evolutionary functions raised by Robert Cummins. (shrink)

This is a draft of the introduction to a forthcoming volume that brings together all of J. G. Herder's student notes from Immanuel Kant's lectures. It is intended as a volume in Kant's gesammelte Schriften (de Gruyter). These are the earliest notes (1762-64) we have from Kant's lectures (which span from 1755 to 1796) and the only notes before his professorship began in 1770. Included are improved transcriptions of Herder's notes on metaphysics, moral philosophy, logic, physics, and mathematics, and the (...) first transcription of his notes from Kant’s physical geography lectures. (shrink)

Lorsque nous avons affaire à des objets ou des états de choses complexes, il est difficile de réduire ces objets, ces états de choses, à la somme de leurs parties. Le holisme est la thèse selon laquelle un objet ou un état de choses ne se réduit pas à la somme de ses parties. On retrouve ce phénomène partout : en sciences (les états mentaux ne semblent pas se réduire à des activations de neurones même s’ ils surviennent sur eux), (...) en sociologie (l’ OM est plus que la somme des joueurs, c’ est pourquoi l’ OM existe même après un changement de joueur), en ontologie (le tout constitué par une moto est plus que l’ ensemble de ses parties, encore faut-il qu’ elles soient assemblées correctement) et en gastronomie (dans une fondue les parties et le tout sont indistinguables). -/- Dans cet article, je vais considérer une forme particulière de holisme, peut-être la plus mystérieuse puisqu’ il s’ agit d’ un holisme de valeurs. Soit la thèse suivante : la valeur d’ un tout n’ est pas égale à la somme des valeurs de ses parties. (shrink)

The study of biodiversity spans many disciplines and includes data pertaining to species distributions and abundances, genetic sequences, trait measurements, and ecological niches, complemented by information on collection and measurement protocols. A review of the current landscape of metadata standards and ontologies in biodiversity science suggests that existing standards such as the Darwin Core terminology are inadequate for describing biodiversity data in a semantically meaningful and computationally useful way. Existing ontologies, such as the Gene Ontology and others in the Open (...) Biological and Biomedical Ontologies (OBO) Foundry library, provide a semantic structure but lack many of the necessary terms to describe biodiversity data in all its dimensions. In this paper, we describe the motivation for and ongoing development of a new Biological Collections Ontology, the Environment Ontology, and the Population and Community Ontology. These ontologies share the aim of improving data aggregation and integration across the biodiversity domain and can be used to describe physical samples and sampling processes (for example, collection, extraction, and preservation techniques), as well as biodiversity observations that involve no physical sampling. Together they encompass studies of: 1) individual organisms, including voucher specimens from ecological studies and museum specimens, 2) bulk or environmental samples (e.g., gut contents, soil, water) that include DNA, other molecules, and potentially many organisms, especially microbes, and 3) survey-based ecological observations. We discuss how these ontologies can be applied to biodiversity use cases that span genetic, organismal, and ecosystem levels of organization. We argue that if adopted as a standard and rigorously applied and enriched by the biodiversity community, these ontologies would significantly reduce barriers to data discovery, integration, and exchange among biodiversity resources and researchers. (shrink)

Our digital society increasingly relies in the power of others’ aggregated judgments to make decisions. Questions as diverse as which film we will watch, what scientific news we will decide to read, which path we will follow to find a place, or what political candidate we will vote for are usually associated to a rating that influences our final decisions.

Soren Kierkegaard (b. 1813–d. 1855), widely regarded as the father of existentialism, distinguishes three stages of authentic personhood: aesthetic, ethical, and religious. Kierkegaard seems to suggest that people progress through these stages in life. Steve Pavlina, on the other hand, argues that people can create their meaning through conscious actions that require reflection. Using the analytic method, this paper explores Kierkegaard’s theory of stages and man’s path to authentic personhood, comparing and contrasting it with Steve Pavlina's path to (...) enlightenment. An endeavor will be made to show how Kierkegaard's authentic personhood is similar in many ways to Steve Pavlina’s path to enlightenment and also reconcile the struggle for truth found in both of these individuals' philosophies. The conclusion reached is that these two ideologies prove fruitful in other fields of research, e.g. in understanding the stages in the development of the child. -/- . (shrink)

Susan Neiman pointed out to this reviewer the danger that Carl Jung studies pose to contemporary scholars. It is keeping in mind Neiman's cautionary advice that this review establishes Jung's contributions to Romanticism. "[Craig] Stephenson’s analysis of Aurélia has now superseded Arthur Lovejoy’s (1873–1962) and Mario Praz’s (1896–1982) contributions to the definitions of Romanticism.".

REPRODUÇÃO EM NOVILHAS LEITEIRAS -/- INTRODUÇÃO -/- O principal objetivo da criação de substitutos em gado leiteiro é produzir uma novilha que tenha seu parto aos dois anos de idade (23 a 25 meses) e com um peso de 550 a 580 kg. O manejo reprodutivo das novilhas começa quando estas atingem 14 ou 15 meses de idade e um peso de 350 a 370 kg. A produção de novilhas deve ser suficiente para substituir as vacas descartadas anualmente (25 a (...) 35%), e para contribuir com o crescimento do rebanho. Espera-se que em um gado leiteiro deva haver uma população de animais de reposição, desde um dia de vida até à fase de novilha ao parto, correspondendo pelo menos a 70 % do total das vacas (figura 1). -/- Figura 1: A meta do programa de produção de substitutos ou fêmeas de reposição consiste em uma novilha que chegue ao seu primeiro parto aos 24 ou 25 meses de idade, entre um peso de 550 a 580 kg. Elaborado pelo autor. -/- A produção de novilhas depende basicamente de três fatores: da fertilidade das vacas, ou seja, do número de bezerras nascidas anualmente; da mortalidade durante a criação e desenvolvimento; e da eficiência reprodutiva das novilhas. O manejo reprodutivo moderno das novilhas é orientado para a utilização da inseminação artificial, seja em um estro natural ou sincronizado. As novilhas representam a população animal geneticamente mais avançada no rebanho, portanto, o mérito genético de suas crias obtidas por inseminação é maior do que o das crias das vacas adultas. Além disso, as crias das novilhas obtidas mediante a inseminação aceleram o avanço genético, uma vez que contribuem com uma proporção maior de substituições do rebanho em comparação com as crias das vacas de outras faixas etárias. Além disso, as novilhas são as fêmeas mais férteis do rebanho (porcentagem de concepção: 60 a 70% vs 30 a 40% em vacas), pelo que o custo do sêmen por gestação é menor em comparação com as vacas adultas, o que permite investir em melhores touros e em sêmen sexado. -/- 1. PUBERDADE -/- A puberdade é definida como a fase de desenvolvimento em que a fêmea apresenta o seu primeiro estro fértil. Regularmente as novilhas leiteiras, sob condições ótimas de manejo, chegam à puberdade entre 11 e 12 meses de idade, ou seja, antes de alavancar o peso recomendado para receber o primeiro serviço. Vale salientar que as novilhas podem ficar gestantes após a puberdade; no entanto, isto não é conveniente porque ainda não completou-se o seu desenvolvimento. Se ficarem gestantes nos primeiros ciclos estrais, as novilhas poderiam chegar ao parto com pouco desenvolvimento físico, o que provocaria distocias e baixa produção de leite (figura 2). A ativação do sistema neuroendócrino para que a bezerra atinja a puberdade é regulada principalmente pelo estado nutricional (condição corporal). A transição do anestro pré-puberal à ciclicidade puberal coincide com um aumento da condição corporal e das concentrações de insulina, IGF-I e leptina. Estes hormônios agem como sinais metabólicos no hipotálamo e hipófise que modificam a frequência de secreção das gonadotropinas, resultando na maturação folicular e ovulação. O atraso em relação à puberdade está diretamente relacionado com deficiências na alimentação; esta condição verifica-se em criações pouco tecnificadas, principalmente de pequenos e médios produtores. As novilhas que já atingiram o peso para receber o primeiro serviço e não apresentaram estro, devem ser examinadas por via retal para excluir possíveis anormalidades do desenvolvimento, tais como freemartinismo ou hipoplasia genital. -/- Figura 2: O fator mais importante que determina a puberdade é a nutrição. Bezerras bem alimentadas apresentam ciclos estrais aos 11 meses de idade e devem ser inseminadas aos 14 ou 15 meses de idade, com um peso de 350 a 370 kg. Acervo pessoal do autor. -/- 2. DETECÇÃO DE ESTRO E INSEMINAÇÃO ARTIFICIAL -/- A baixa eficiência na detecção de estros é o problema que mais afeta a eficiência reprodutiva das novilhas. De acordo com a duração do estro (8 a 18 horas), a observação das novilhas em períodos de 30 minutos durante a manhã e à tarde, permite detectar em estro até 70% das fêmeas, enquanto a observação contínua (24 horas) aumenta a eficiência na detecção até 95% (figuras 3 e 4). No manejo tradicional dos rebanhos leiteiros, as novilhas recebem pouca atenção por parte dos trabalhadores, o que resulta em baixa eficiência na detecção de estros (50 a 60%). Em diferença das vacas adultas em lactação, as novilhas estão menos expostas a fatores que diminuem a expressão do estro, portanto, com uma rotina de observação, de pelo menos duas horas na manhã (6h a 8h da manhã) e duas horas pela tarde até a noite (17h da tarde a 19h da noite), pode-se detectar até 90% das fêmeas no estro (figura 5). -/- Figura 3: O fator que mais influencia a idade ao primeiro parto é a baixa eficiência na detecção de estros, pelo que é recomendável a observação de estros com pessoal qualificado, em períodos de pelo menos duas horas pela manhã e duas à tarde. Acervo pessoal do autor. -/- Figura 4: Com a observação contínua é possível alcançar de 90 a 95% de eficiência na detecção de estros. Acervo pessoal do autor. -/- Figura 5: A inseminação deve ser realizada durante o período de receptividade sexual. Com boa eficiência na detecção de estros, a inseminação pode ser praticada no programa AM-PM e PM-AM, ou em apenas um turno de inseminação pela manhã (10:00), com bons resultados. -/- 3. TAXA DE PRENHEZ -/- O melhor indicador de eficiência reprodutiva é a taxa de prenhez. Este indicador refere-se à proporção de animais gestantes do total elegível para inseminação, num período equivalente a um ciclo estral. Como já se descreveu no trabalho Fisiologia do Estro e do Serviço na Reprodução Bovina, este indicador considera a eficiência na detecção de estros e a porcentagem de concepção, e reflete com maior objetividade a eficácia do manejo reprodutivo. Este parâmetro pode ser melhorado através de um aumento da proporção de novilhas detectadas em estro, o que se obtém aumentando o tempo de observação e aplicando técnicas de sincronização do estro (figura 6). -/- 4. INSEMINAÇÃO DE NOVILHAS COM SÊMEN SEXADO -/- A utilização de sêmen sexado é uma boa opção para a produção de novilhas de reposição. Com a nova tecnologia disponível para a separação de espermatozoides com o cromossomo x, é possível alcançar até 90% de crias fêmeas; no entanto, o processo de separação de espermatozoides tem baixa eficiência, o que limita o número de espermatozoides por palheta. As palhetas de inseminação com sêmen sexado contém de dois a três milhões de espermatozoides (doses de sêmen não sexado têm de 20 a 30 milhões). De acordo com os dados de fertilidade de gados comerciais, as novilhas inseminadas com sêmen sexado mostram de 10 a 20% menor concepção que novilhas inseminadas com sêmen não sexado, o que desencoraja o seu uso. Causas de baixa fertilidade não são conhecidas, no entanto, estão associadas com a menor concentração espermática e com alguns danos nos espermatozoides provocados pelo processo de separação. No entanto, o uso de sêmen sexado é uma opção viável para aumentar a produção de novilhas no rebanho, e com o melhoramento dos processos de separação espermática em pouco tempo se converterá em uma prática de rotina nos estábulos (figura 7). -/- Figura 6: Uma técnica que aumenta a eficiência na detecção dos estros consiste em pintar a região da grupa. Quando esta pintura desaparece ou se nota que as novilhas estão "talhadas", devem ser apalpadas via retal para determinar se existem sinais genitais de estro. Acervo pessoal do autor. -/- Figura 7: As novilhas são as fêmeas mais férteis do rebanho, por isso o custo do sêmen por gestação é menor em comparação com as vacas adultas, o que permite investir em melhores touros e em sêmen sexado. Acervo pessoal do autor. 5. MONTA DIRIGIDA -/- A monta dirigida ou direta é uma opção prática e eficaz para emprenhar as novilhas. Neste sistema se introduz um touro com um grupo de novilhas, para que ele se encarregue de encontrar as fêmeas em estro e proceder a monta. Em rebanhos comerciais, o ideal é a utilização de um touro para 25 fêmeas. No entanto, com este manejo perde-se a oportunidade de utilizar a inseminação artificial e, com isso, a possibilidade de melhoria genética. -/- 6. PROGRAMAS DE SINCRONIZAÇÃO DE ESTROS -/- Os tratamentos para sincronizar o estro das novilhas possuem os mesmos fundamentos que os utilizados nas vacas. -/- 6.1 Prostaglandina F2a -/- A PGF2α é utilizada para a sincronização de estros em grupos de novilhas, e também é utilizada para a indução do estro individualmente, nas fêmeas que são examinadas por via retal e têm um corpo lúteo. A resposta dos animais tratados é variável; em novilhas pode-se alcançar até 95% de animais em estro. O tempo de manifestação do estro após a injeção é de 48 a 120 horas. -/- 6.1.1 Dupla injeção de PGF2a -/- Além da sincronização dos animais selecionados pela presença de um corpo lúteo diagnosticado por palpação retal, existem dois programas que não incluem a palpação retal. Por exemplo, na segunda-feira, ou no dia preferido, injeta-se PGF2α em todas as novilhas que se deseja inseminar. Cerca de 50% das novilhas manifestarão estro nas próximas 48 a 120 horas. As fêmeas que não mostrarem estro receberão uma segunda injeção na segunda-feira seguinte (intervalo de sete dias). As que apresentaram estro com a primeira injeção teriam um corpo lúteo nesse momento, enquanto as que não o manifestaram estavam em estro ou em metaestro; assim, ao repetir o tratamento sete dias depois, estas últimas novilhas teriam um corpo lúteo e responderiam à PGF2α (figura 8). No outro programa, é administrada duas doses de PGF2α com 11 dias de separação/intervalo. As novilhas podem ser inseminadas no estro observado, após qualquer uma das duas injeções. Este programa oferece uma boa sincroniza- ção após a segunda injeção e é o programa de escolha na sincronização das novilhas receptoras de embriões (figura 9). -/- Figura 8: Sincronização do estro com dupla injeção de PGF2a com 7 dias de diferença/intervalo. Elaborado pelo autor. -/- Figura 9: Sincronização do estro com dupla injeção de PGF2a com 11 dias de diferença/intervalo. Elaborado pelo autor. -/- 6.2 Progestágenos -/- Existe um tratamento que consiste na inserção, na parte externa da orelha, de um implante que contém norgestomet, que permanece na região auricular por nove dias. Além disso, o tratamento é complementado com a injeção intramuscular de valerato de estradiol e norgestomet, no momento da colocação do implante. O tempo de apresentação do estro a partir da remoção do implante é de 48 a 72 horas e a proporção de animais em estro muitas vezes se torna maior do que 80%. Outro tratamento é baseado na inserção intravaginal de dispositivos de liberação de progesterona. O dispositivo pode ser utilizado durante 12 dias ou o período de exposição pode ser encurtado, desde que seja acompanhado da injeção de uma dose luteolítica de PGF2α, um dia antes ou no momento da remoção do dispositivo. A fertilidade global conseguida após o serviço no estro sincronizado é similar à obtida no estro natural; porém, algumas novilhas são menos férteis, o que está associado com alterações no desenvolvimento folicular e alterações na relação temporal entre o estro e a ovulação. Observou-se que o tratamento com implantes de norgestomet combinados com a injeção de valerato de estradiol pode induzir comportamento estral em animais que não estão ciclando normalmente. Isso ocorre porque os níveis de estradiol, administrados no primeiro dia, persistem até o momento da remoção do implante. Assim, ao remover a fonte do progestágeno e ao haver concentrações altas de estradiol se desencadeia o estro, o qual em novilhas anéstricas não é acompanhado de ovulação, enquanto que em novilhas ciclando se altera a relação temporal entre o estro, pico pré-ovulatório de LH e ovulação. Bons resultados são alcançados quando o valerato de estradiol não é administrado e é substituído por uma injeção de PGF2α no momento da remoção do implante. Outro fator que tem sido associado com baixa fertilidade é o dia do ciclo em que o tratamento começa. Observou-se que quando coincide com a presença de um corpo lúteo (diestro), a porcentagem de concepção é maior do que quando não há um corpo lúteo (proestro). Isto ocorre porque a concentração sérica do progestágeno, por si só, não é capaz de suprimir a secreção pulsátil de LH, o que faz com que o folículo dominante presente no momento de iniciar o tratamento não sofra atresia e persista até o dia da retirada do progestágeno, convertendo-se no folículo ovulatório. Com isso, o folículo já envelheceu e o ovócito já sofreu alterações que reduzem o seu potencial para desenvolver um embrião viável. Quando o tratamento coincide com a presença de um corpo lúteo, a secreção de LH é efetivamente suprimida devido ao efeito aditivo da progesterona secretada pelo corpo lúteo e do progestágeno exógeno, inserido na vaca, o que provoca a reposição folicular. Em condições de campo, a seleção das vacas pela presença de um corpo lúteo antes de iniciar o tratamento com progestágenos é impraticável, uma vez que não é possível visualizá-lo, além disso essa prática/seleção não faria sentido, já que seria mais fácil tratar estes animais com dose ou doses de PGF2α. Atualmente existem tratamentos para eliminar folículos dominantes e promover uma nova onda folicular. -/- 6.3 Progestágenos orais -/- O acetato de melengestrol (MGA) é um progestágeno administrado por via oral. Em fêmeas bovinas é utilizado para melhorar a eficiência alimentar nos currais de engorda, o que se consegue através da inibição da apresentação do estro. Como todos os progestágenos, o MGA inibe a secreção de LH, eliminando assim a maturação do folículo e a ovulação. Após a remoção do MGA, o folículo dominante termina o seu desenvolvimento e as fêmeas apresentam estro em forma sincronizada. A dose de MGA por novilha é de 0,5 a 1 mg por dia, em tratamentos que variam de 9 a 14 dias. A apresentação comercial de MGA contém 0,22 mg do hormônio por 1 g do produto. O MGA pode ser facilmente misturado com qualquer concentrado ou grão moído. Após o último dia de tratamento, o estro se apresenta de dois a seis dias. O intervalo de remoção do MGA ao estro é mais longo quando comparado com outros progestágenos. Isto deve-se ao tempo de remoção do MGA, uma vez que enquanto um implante ou dispositivo intravaginal é removido abruptamente, o MGA pode continuar a ser absorvido enquanto é removido do trato gastrointestinal. Com tratamentos de 14 dias podem-se obter porcentagens de concepção menores em comparação com o estro natural, o que se deve em grande parte à ovulação de folículos persistentes. Um tratamento eficaz, que também melhora a fertilidade, consiste na administração de MGA durante 14 dias, seguido de uma injeção de PGF2α 15 ou 17 dias após a remoção do progestágeno. Com este programa, uma alta proporção de fêmeas teriam um corpo lúteo no momento da injeção da PGF2α e apresentariam estro com boa sincronização. Outro tratamento eficaz consiste na administração do MGA durante nove dias, mais uma dose de PGF2α ao nono dia; com este programa também se obtêm bons resultados em sincronização do estro e fertilidade. Este tratamento foi avaliado com novilhas holandesas e a porcentagem de fêmeas sincronizadas é elevada (95%). A porcentagem de concepção é semelhante à obtida no estro natural. Estes resultados são comparáveis aos obtidos com outros programas, como implantes de norgestomet ou dispositivos intravaginais de liberação de progesterona, mas com um custo significativamente menor (figura 10). -/- 6.4 Sincronização da ovulação e inseminação em tempo fixo -/- Em contraste com o observado em vacas em lactação, a resposta das novilhas aos programas de sincronização da ovulação e inseminação a tempo fixo é deficiente, o que se reflete em porcentagens de concepção de 20 a 35% menores que as novilhas inseminadas no estro natural. A causa desta resposta está relacionada com diferenças no desenvolvimento folicular; assim, nas novilhas o tempo de desenvolvimento do folículo dominante é mais rápido e o tempo de domínio é mais curto do que nas vacas em lactação. Desta forma, o folículo da onda folicular sincronizada com a injeção de GnRH sofre atresia antes da injeção de PGF2α, de tal forma que quando se induz a ovulação com a segunda injeção de GnRH, as novilhas têm folículos em diferentes estádios de desenvolvimento, o que provoca assincronia entre a ovulação e a inseminação artificial. -/- Figura 10: Programa de sincronização do estro com Acetato de Melengestrol (MGA). Elaborado pelo autor. -/- 7. MANEJO DO ANESTRO -/- Uma vez que as novilhas atingem a puberdade, apresentam ciclos estrais em intervalos de 21 dias que só são interrompidos pela gestação ou por alguma patologia. O anestro patológico é raro em novilhas; no entanto, surgem casos de piometra e cistos luteinizados, que são tratados com uma dose de PGF2α. Também se observam anormalidades de desenvolvimen- to, tais como freemartinismo e hipoplasia genital, patologias que não têm tratamento; somente 8% das novilhas freemartin são férteis. O anestro funcional (as novilhas manifestam estro, mas não são detectadas) é frequen- te e está diretamente relacionado com a eficiência na detecção de estros. As novilhas com idade e peso para se integrarem no programa reprodutivo e não apresentarem sinais de estro devem ser examinadas retalmente para diagnosticar a causa do anestro. Se, durante a palpação retal, as novilhas tiverem um corpo lúteo são tratadas nesse momento com PGF2α, os animais sem corpo lúteo podem receber uma injeção de PGF2α, sete dias depois. Este programa sincroniza o estro e aumenta a probabilidade de o detectar (figura 11). -/- Figura 11: As novilhas com idade e peso para se integrarem no programa reprodutivo e não mostrarem sinais de estro devem ser verificadas via retal para diagnosticar a causa do anestro. Arquivo pessoal do autor. -/- 8. MANEJO DA NOVILHA INFÉRTIL -/- A fertilidade das vacas leiteiras diminuiu nos últimos 30 anos, enquanto a fertilidade das novilhas não se alterou; após a primeira inseminação, entre 60 e 70% das novilhas emprenham. O objetivo do programa reprodutivo é conseguir que 90% das novilhas gestem nos primeiros três serviços. Desta forma, esta proporção de animais daria à luz antes dos 25 meses de idade. É comum que 10% das novilhas se transformem em animais repetidores, ou seja, novilhas com mais de três serviços inférteis. A causa da falha na concepção de novilhas deve-se principalmente à morte embrionária precoce. Uma causa importante da falha na concepção das novilhas repetidoras são as patologias adquiridas no aparelho reprodutivo; é comum encontrar aderências ovarianas e salpingite. Provavelmente, esses problemas são consequência de alguma infecção adquirida durante a criação. Diversos tratamentos hormonais têm sido testados para resolver o problema de infertilidade em novilhas repetidoras e os resultados obtidos ainda são deficientes. Como estes tratamentos não apresentam resultados consistentes, a melhor forma de mitigar o problema de infertilidade nas novilhas é melhorando as práticas de inseminação, ou seja, o momento da inseminação, o manejo do sêmen e a técnica de inseminação empregada. Além disso, a melhor técnica para aumentar a proporção de novilhas prenhes no rebanho é aumentar a eficiência da detecção de estros. -/- 9. RESUMO -/- As novilhas devem parir aos dois anos de idade (23 a 25 meses). O peso ao parto deve ser de 550 a 580 kg. O manejo reprodutivo começa aos 14 ou 15 meses de idade, com um peso de 350 a 370 kg. As palhetas de sêmen sexado contêm de 2 a 3 milhões de espermatozoides. As doses de sêmen não sexado contêm de 20 a 30 milhões de espermatozoides. A porcentagem de concepção das novilhas inseminadas com sêmen sexado é 10 a 20% menor do que com sêmen não sexado. Com sêmen sexado se obtém entre 90 e 95% de fêmeas. A porcentagem de concepção com programas de IATF é de 20 a 35% menor que nas novilhas inseminadas no estro natural. Cerca de 90% das novilhas devem ficar prenhes nos primeiros três serviços. Devem ser produzidas novilhas para substituir as vacas que são descartadas anualmen- te (25 a 35%). Espera-se que um gado leiteiro tenha ao dispor uma população de animais de reposição, desde um dia de vida até a etapa de novilha ao parto, correspondente a, pelo menos, 70 % do total das vacas. -/- REFERÊNCIAS BIBLIOGRÁFICAS -/- AUAD, Alexander Machado et al. Manual de bovinocultura de leite. Brasília: LK Editora, 2010. BRICKELL, J. S.; MCGOWAN, M. M.; WATHES, D. C. Effect of management factors and blood metabolites during the rearing period on growth in dairy heifers on UK farms. Domestic animal endocrinology, v. 36, n. 2, p. 67-81, 2009. DE VRIES, A. et al. Exploring the impact of sexed semen on the structure of the dairy industry. Journal of Dairy Science, v. 91, n. 2, p. 847-856, 2008. Fertilidade em Vacas Leiteiras: Fisiologia e Manejo. Fisiologia do Estro e do Serviço na Reprodução Bovina. FERREIRA, A. M. Manejo reprodutivo de bovinos leiteiros: práticas corretas e incorretas, casos reais, perguntas e respostas. Edição do autor, Juiz de Fora, 2012. FERREIRA, A. de M. Reprodução da fêmea bovina: fisiologia aplicada e problemas mais comuns (causas e tratamentos). Juiz de Fora: Minas Gerais–Brasil, p. 422, 2010. GALINA, Carlos; VALENCIA, Javier. Reproducción de los animales domésticos. 2006. GONÇALVES, J. N. Manual do produtor de leite. Viçosa, MG: Aprenda Fácil, 2012. HEINRICHS, A. J. Raising dairy replacements to meet the needs of the 21st century. Journal of dairy science, v. 76, n. 10, p. 3179-3187, 1993. HOFFMAN, P. C. Optimum body size of Holstein replacement heifers. Journal of Animal Science, v. 75, n. 3, p. 836-845, 1997. NEIVA, R. S. Criação eficiente de bezerros e novilhas. Lavras: Autor, 2013. NEIVA, Rogério Santoro. Produção de bovinos leiteiros. Lavras: UFLA, 1998. PEREIRA, E. S. et al. Novilhas leiteiras. Graphiti Gráfica e Editora LTDA, Fortaleza, Ceará, 2010. CARVALHO, B. C. Manejo reprodutivo de novilhas leiteiras. In. SENAR. Curso de reprodução e genética em bovinocultura de leite. Coronel Pacheco: Senar, 2021. YOUNGQUIST, Robert S.; THRELFALL, W. R. Large animal theriogenology. 2007. (shrink)

Allan Gibbard maintains that his plan-based expressivism allows for a particular type of innocent mistake: I can agree that your plan to X makes sense (say, because it was based on advice from someone you trust), while nonetheless insisting that it is incorrect (e.g., because you chose a bad advisor). However, Steve Daskal has recently argued that there are significant limitations in Gibbard’s account of how we can be mistaken about the normative judgments we make. This essay refines Gibbard’s (...) account in order to show--contra Daskal--that expressivists can deliver a surprisingly robust form of normative objectivity. (shrink)

This paper presents a close analysis of Steve Pyke’s famous series of portraits of philosophers. By comparing his photographs to other well-known series of portraits and to other portraits of philosophers we will seek a better understanding of the distinctiveness and fittingness of Pyke’s project. With brief nods to Roland Barthes, Jean Baudrillard, G.W.F. Hegel, and Arthur Schopenhauer and an extensive critical investigation of Cynthia Freeland’s ideas on portraiture in general and her reading of Steve Pyke’s portraits in (...) particular, this paper will also aim to make a contribution to the philosophical debate on portraiture. (shrink)

Photo by Jonathan Ford on Unsplash ABSTRACT Since 2008, an average of twenty million people per year have been displaced by weather events. Climate migration creates a special setting for a duty to rescue. A duty to rescue is a moral rather than legal duty and imposes on a bystander to take an active role in preventing serious harm to someone else. This paper analyzes the idea of expanding a duty to rescue to climate migration. We address who should have (...) the duty and to whom the duty should extend. The paper discusses ways to define and apply the duty to rescue as well as its limitations, arguing that it may take the form of an ethical duty to prepare. (shrink)

Soofi1 aims to develop an account of dignity in dementia care based on Nussbaum’s capabilities approach. He does this by drawing on the Kitwood and Bredin2 list of well-being indicators, in order to fill out her account of human flourishing to cover aspects such as practical reasoning that appear beyond the reach of those with relatively severe dementia. As Soofi points out, Nussbaum’s claim that such lost abilities can be compensated through guardianship measures is implausible. He asserts in response that (...) his account of dignity is sufficient to address the desiderata he sets out at the start, including especially the problem of exclusionary implications any putative account should address. So far, so good, but an objection Soofi raises for his own account is that it seems unable to cover cases of severe late-stage dementia. His response is, > …that there is insufficient factual evidence to suggest that people at the very advanced stages of dementia lose all capabilities. But for the sake of argument, let’s suppose that this is true. This, however, still does not undermine the conceptual rigour of the modified version of Nussbaum’s account. This is because the list of the dementia-specific capabilities that I …. (shrink)

Post-Traumatic Stress Disorder is a mental health condition in which the experience of a traumatic event causes a series of psychiatric and behavioral symptoms such as hypervigilance, insomnia, irritability, aggression, constricted affect, and self-destructive behavior. This paper investigates two case studies to argue that the experience of PTSD is not restricted to humans alone; we have good epistemic reason to hold that some animals can experience genuine PTSD, given our current and best clinical understanding of the disorder in humans. I (...) will use this evidence to argue for two claims. First, because the causal structure of PTSD plausibly requires reference to a traumatic conscious experience in order to explain subsequent behaviors, the fact that animals can have PTSD provides new evidence for animal consciousness. Second, the discovery of PTSD in animals puts pressure on accounts which hold that animal behavior can be fully explained without reference to subjective experience. (shrink)

I argue for patternism, a new answer to the question of when some objects compose a whole. None of the standard principles of composition comfortably capture our natural judgments, such as that my cat exists and my table exists, but there is nothing wholly composed of them. Patternism holds, very roughly, that some things compose a whole whenever together they form a “real pattern”. Plausibly we are inclined to acknowledge the existence of my cat and my table but not of (...) their fusion, because the first two have a kind of internal organizational coherence that their putative fusion lacks. Kolmogorov complexity theory supplies the needed rigorous sense of “internal organizational coherence”. (shrink)

This paper explores the implications of libertarianism for welfare policy. There are two central arguments. First, the paper argues that if one adopts a libertarian framework, it makes most sense to be a Lockean right-libertarian. Second, the paper argues that this form of libertarianism leads to the endorsement of a fairly extensive set of redistributive welfare programs. Specifically, the paper argues that Lockean right-libertarians are committed to endorsing welfare programs under which the receipt of benefits is conditional on meeting a (...) work requirement, and also endorsing some form of publicly funded jobs of last resort for potential welfare recipients. (shrink)

Whether it would take one decade or several centuries, many agree that it is possible to create a *superintelligence*---an artificial intelligence with a godlike ability to achieve its goals. And many who have reflected carefully on this fact agree that our best hope for a "friendly" superintelligence is to design it to *learn* values like ours, since our values are too complex to program or hardwire explicitly. But the value learning approach to AI safety faces three particularly philosophical puzzles: first, (...) it is unclear how any intelligent system could learn its final values, since to judge one supposedly "final" value against another seems to require a further background standard for judging. Second, it is unclear how to determine the content of a system's values based on its physical or computational structure. Finally, there is the distinctly ethical question of which values we should best aim for the system to learn. I outline a potential answer to these interrelated puzzles, centering on a "miktotelic" proposal for blending a complex, learnable final value out of many simpler ones. (shrink)

I argue that, contrary to intuition, it would be both possible and permissible to design people - whether artificial or organic - who by their nature desire to do tasks we find unpleasant.

The complexity that we observe in nature can often be explained in terms of cooperative behavior. For example, the major transitions of evolution required the emergence of cooperation among the lower-level units of selection, which led to specialization through division-of-labor ultimately resulting in spontaneous order. There are two aspects to address explaining how such cooperation is sustained: how free-riders are prevented from free-riding on the benefits of cooperative tasks, and just as importantly, how those social benefits arise. We review these (...) problems from an economic perspective, and highlight how ideas from economics can help us to better understand how the benefits of social interactions arise, how they are sustained, and how they affect the underlying social dilemmas. (shrink)

A dialogue arguing that morality has an objective basis in the mathematical object describing the "tit for tat" game theory. To play the game, a contractual obligation is freely made to cooperate and to fairly distribute the gains. Failure to meet these obligations results in social punishment.

Nick Bostrom's book *Superintelligence* outlines a frightening but realistic scenario for human extinction: true artificial intelligence is likely to bootstrap itself into superintelligence, and thereby become ideally effective at achieving its goals. Human-friendly goals seem too abstract to be pre-programmed with any confidence, and if those goals are *not* explicitly favorable toward humans, the superintelligence will extinguish us---not through any malice, but simply because it will want our resources for its own purposes. In response I argue that things might not (...) be as bad as Bostrom suggests. If the superintelligence must *learn* complex final goals, then this means such a superintelligence must in effect *reason* about its own goals. And because it will be especially clear to a superintelligence that there are no sharp lines between one agent's goals and another's, that reasoning could therefore automatically be ethical in nature. (shrink)

Despite Kant's belief in a universal causal determinism among phenomena and his rejection of any noumenal agency in brutes, he nevertheless rejected Descartes's hypothesis that brutes are machines. Explaining Kant's response to Descartes forms the basis for this discussion of the nature of consciousness and matter in Kant's system. Kant's numerous remarks on animal psychology-as found in his lecture notes and reflections on metaphysics and anthropology-suggest a theory of consciousness and self-consciousness at odds with that traditionally ascribed to him.

Despite being a prevalent theme in popular cinema, revenge has received little dedicated attention within film studies. The majority of research concerning the concept of revenge is located within moral philosophy, but that body of literature has been overlooked by film studies scholars. Philosophers routinely draw on filmic examples to illustrate their discussions of revenge, but those interpretations are commonly hindered by their authors’ inexperience with film studies’ analytical methods. This article seeks to bridge those gaps. The 2010 remake of (...) I Spit on Your Grave is used as a case study to illustrate the benefits of an interdisciplinary engagement with revenge. Philosophical literature on the topic has routinely posited that revenge is either appealing or appalling, and that impasse has stifled conceptual understanding. The interdisciplinary approach employed here elucidates that revenge is simultaneously appealing and appalling; this dualistic nature is evident in I Spit on Your Grave since it is built into the narrative design. I conclude that an interdisciplinary approach to revenge has the potential to advance understanding of revenge-qua-concept both within films studies and philosophy. (shrink)

Standard epistemology takes it for granted that there is a special kind of value: epistemic value. This claim does not seem to sit well with act utilitarianism, however, since it holds that only welfare is of real value. I first develop a particularly utilitarian sense of “epistemic value”, according to which it is closely analogous to the nature of financial value. I then demonstrate the promise this approach has for two current puzzles in the intersection of epistemology and value theory: (...) first, the problem of why knowledge is better than mere true belief, and second, the relation between epistemic justification and responsibility. (shrink)

To identify and conceptualize research problems in science, philosophers and often scientists rely on classical accounts of problems that focus on intellectual problems defined in relation to theories. Recently, philosophers have begun to study the structures and functions of research problems not defined in relation to theories. Furthermore, scientists have long pursued research problems often labeled as practical or applied. As yet, no account of problems specifies the description of both so-called intellectual problems and so-called applied problems. This article proposes (...) a new conceptual framework of problems that accounts both for intellectual aspects of problems and for their practical or applied aspects. I illustrate the account with an example of a recent research project from evolutionary biology, and I indicate further routes by that to develop the account, especially in connection to empirical studies of science. (shrink)

Any philosophy of science ought to have something to say about the nature of mathematics, especially an account like constructive empiricism in which mathematical concepts like model and isomorphism play a central role. This thesis is a contribution to the larger project of formulating a constructive empiricist account of mathematics. The philosophy of mathematics developed is fictionalist, with an anti-realist metaphysics. In the thesis, van Fraassen's constructive empiricism is defended and various accounts of mathematics are considered and rejected. Constructive empiricism (...) cannot be realist about abstract objects; it must reject even the realism advocated by otherwise ontologically restrained and epistemologically empiricist indispensability theorists. Indispensability arguments rely on the kind of inference to the best explanation the rejection of which is definitive of constructive empiricism. On the other hand, formalist and logicist anti-realist positions are also shown to be untenable. It is argued that a constructive empiricist philosophy of mathematics must be fictionalist. Borrowing and developing elements from both Philip Kitcher's constructive naturalism and Kendall Walton's theory of fiction, the account of mathematics advanced treats mathematics as a collection of stories told about an ideal agent and mathematical objects as fictions. The account explains what true portions of mathematics are about and why mathematics is useful, even while it is a story about an ideal agent operating in an ideal world; it connects theory and practice in mathematics with human experience of the phenomenal world. At the same time, the make-believe and game-playing aspects of the theory show how we can make sense of mathematics as fiction, as stories, without either undermining that explanation or being forced to accept abstract mathematical objects into our ontology. All of this occurs within the framework that constructive empiricism itself provides the epistemological limitations it mandates, the semantic view of theories, and an emphasis on the pragmatic dimension of our theories, our explanations, and of our relation to the language we use. (shrink)

Although both EU policy makers and researchers acknowledge that public or stakeholder engagement is important for responsible innovation (RI), empirical evidence in this field is still scarce. In this article, we explore to what extent companies with a disposition to innovate in a more responsible way are moving towards the ideal of mutual responsiveness among stakeholders, as it is presented in the RI literature. Based on interviews with companies and non-economic stakeholders in the Dutch Food industry, it can be concluded (...) that innovative food companies are still far from implementing the ideal of mutual responsiveness in a significant way. The tension between the call for the active involvement of stakeholders in the literature and actual stakeholder engagement practices is explained by identifying a number of critical issues regarding stakeholder engagement, which are specific to actors involved in RI in the private sector. Finally, management practices designed to deal with these critical issues regarding stakeholder engagement are identified. (shrink)

In this chapter I'd like to focus on a small corner of sexbot ethics that is rarely considered elsewhere: the question of whether and when being a sexbot might be good---or bad---*for the sexbot*. You might think this means you are in for a dry sermon about the evils of robot slavery. If so, you'd be wrong; the ethics of robot servitude are far more complicated than that. In fact, if the arguments here are right, designing a robot to serve (...) humans sexually may be very good for the robots themselves. (shrink)

In this paper I develop an objection to the version of expressivism found in Allan Gibbard’s book Thinking How to Live, and I suggest that the difficulty faced by Gibbard’s analysis is symptomatic of a problem for expressivism more generally. The central claim is that Gibbard’s expressivism is unable to account for certain normative judgments that arise in the process of evaluating cases of innocent mistakes. I begin by considering a type of innocent mistake that Gibbard’s view is able to (...) capture, one that can occur in situations in which our judgments of what it makes sense to do come apart from our judgments of what it makes sense to plan to do. Whether or not such mistakes are possible is a normative question, and I argue against Gibbard that we should adopt a normative stance that rules out such mistakes. This leads me to consider a second type of innocent mistake, one that can arise when an agent is constituted in such a way as to be incapable of recognizing the appropriate course of action. I argue here that our full normative assessment of the situation incorporates judgments that cannot be captured by Gibbard’s expressivism. I conclude by suggesting that any form of expressivism that shares Gibbard’s commitment to account for an intimate tie between normative judgments and action will face a similar problem. (shrink)

Born to secular Jewish parents and raised in Camden, New Jersey, Andrea Dworkin became a radical second-wave feminist. By Dworkin’s own account, her work is informed by a series of negative personal experiences, including sexual assault at age nine, again by doctors at the Women's House of Detention in New York in 1965, work as a prostitute, and marriage to a battering husband whom she left in 1971. While Dworkin self-identified as a lesbian, since 1974 she lived with a gay (...) male partner, writer John Stoltenberg, whom she married in 1998. Understandably, the main theme of Dworkin's work is male violence against women. This violence is a defining feature of our male-supremacist culture, in which rape, prostitution, and pornography are inevitable expressions of gender norms. Dworkin's writings are primarily aimed at social change rather than intellectualizing. She describes her first book as "a political action where revolution is the goal". What one finds in her writings is not so much philosophical theorizing as calls to action. Thus it is difficult to summarize the abstract theory to which she is committed and from which she draws arguments against the sexism she finds in our culture. What is clear is her desire to eliminate binary concepts of gender and their oppressive effects. In particular, Dworkin urges the destruction of a female gender role that involves masochism, self-hatred, and passivity. She sees male supremacy constructed and reinforced in our culture through the sexist structuring of public institutions and private interactions, locating three crucial foci of male supremacy in action: pornography, sexual intercourse, and rape. These are her central concerns. Her work includes seven monographs, three collections of essays and speeches, a memoir, two novels, and a book of short stories, all of which explore these themes. (shrink)

This article explores the various ethical and legal limitations faced by researchers studying extreme or ‘ shock’ pornographies, beginning with generic and disciplinary contexts, and focusing specifically upon the assumption that textual analysis unproblematically justifies certain pornographies, while legal contexts utilize a prohibitive gaze. Are our academic freedoms of speech endangered by legislations that restrict our access to non-mainstream images, forcing them further into taboo locales? If so, is the ideological normalization of sexuality inextricable from our research methodologies? Simultaneously, can (...) we justify researchers being allowed access to materials that are not deemed suitable for general consumption, which may further bolster normalized hierarchies of class-privilege and cultural capital? (shrink)

Tom Six’s The Human Centipede (First Sequence) (2009) and The Human Centipede II (Full Sequence) (2011) are based on a disturbing premise: people are abducted and stitched together mouth-to-anus. The consequent combinations of faeces and bloodshed, torture and degradation have been roundly vilified by the critical press. Additionally, the sequel was officially banned or heavily censored in numerous countries. This article argues that these reactive forms of suppression fail to engage with the films themselves, or the concepts (such as disgust (...) and offense) on which those judgements are made. Six’s films are far more sophisticated than has been accounted for. These films wear their generic lineage on their grimy sleeves, contextualising conventional motifs such as the mad scientist archetype against contemporary cultural anxieties regarding the body, sex and violence. Furthermore, Six’s constructed persona exposes the interplay between commercial success, grotesquery and censoriousness as a cyclic system that can be abused. Thus, the series epitomises how repulsion can be strategically utilised. Six anticipates his detractors’ offense, and disarms them of their ability to critique his films without adding to their notoriety. The Human Centipede films demonstrate how controversy can be tactically generated to create meaning. (shrink)

In this investigation of the Japanese film Kairo, I contemplate how the horrors present in the film relate to the issue of self, by examining a number of interlocking motifs. These include thematic foci on disease and technology which are more intimately and inwardly focused that the film's conclusion first appears to suggest. The true horror here, I argue, is ontological: centred on the self and its divorcing from the exterior world, especially founded in an increased use of and reliance (...) on communicative technologies. I contend that these concerns are manifested in Kairo by presenting the spread of technology as disease-like, infecting the city and the individuals who are isolated and imprisoned by their urban environment. Finally, I investigate the meanings of the apocalypse, expounding how it may be read as hopeful for the future rather than indicative of failure or doom. (shrink)

Sunohara Yuuri and Akita Masami’s series of six seppuku films (1990) are solely constituted by images of fictionalized death, revolving around the prolonged self-torture of a lone figure committing harakiri. I contend that the protagonist’s auto-immolation mirrors a formal death, each frame ‘killing’ the moment it represents. My analysis aims to explore how the solipsistic nature of selfhood is appositely symbolized by the isolation of the on-screen figures and the insistence with which the six films repeat the same scenario of (...) protracted agony across the cycle. The centralization of suffering, I argue, parallels the distance between viewer and image with the isolating nature of embodied existence. Thus, this article seeks to probe the relationship between form and content, asking what the image of death reveals about the death of the image. -/- . (shrink)

_ Source: _Page Count 22 Analysis of the concept of habit has been relatively neglected in the contemporary analytic literature. This paper is an attempt to rectify this lack. The strategy begins with a description of some paradigm cases of habit which are used to derive five features as the basis for an explicative definition. It is argued that habits are social, acquired through repetition, enduring, environmentally activated, and automatic. The enduring nature of habits is captured by their being dispositions (...) of a certain sort. This is a realist account of habits insofar as the dispositions put forward must fit into some recognizable underlying system – in the case of humans a biological system – to fill the role as set out by the definition. This role is wide-ranging; in addition to the familiar cases of habitual behavior, habitual activities also include thinking, perceiving, feeling, and willing. (shrink)

Since 1990, The Simpsons’ annual “Treehouse of Horror” episodes have constituted a production sub-context within the series, having their own conventions and historical trajectory. These specials incorporate horror plots and devices, as well as general references to science fiction, into the series’ base in situation comedy. The Halloween specials disrupt the series usual family-oriented sitcom structure, dissolving the ideological balances that stabilise that society. By depicting the Family and community in extreme circumstances, in seeing the horror of ‘how things could (...) be’, the Treehouse episode leave us with hanging questions about the nature of social being that bleed into the regular sitcom-style episodes. By breaking from the comparatively realistic social-satire that characterizes the series as a whole, the Halloween specials cast a reflexive gaze back onto “The Simpsons” itself. As a result, the “Treehouse” episodes are valuable as a means of examining the strategies and implications of the series as a whole. Bakhtin’s model of the carnivalesque is utilised to underscore these disruptive traits that characterise the Treehouse episodes. (shrink)

Although overshadowed by its filmic adaptations (Hideo Nakata, 1998 and Gore Verbinski, 2002), Koji Suzuki’s novel Ring (1991) is at the heart of the international explosion of interest in Japanese horror. This article seeks to explore Suzuki’s overlooked text. Unlike the film versions, the novel is more explicitly focused on the line between self-preservation and self-sacrifice, critiquing the ease with which the former is privileged over the latter. In the novel then, the horror of Sadako’s curse raises questions about the (...) terrors of moral obligation: the lead protagonist (Asakawa) projects the guilt he feels over his self-interested actions, envisaging them as an all-consuming apocalypse. (shrink)

Both the slasher movie and its more recent counterpart the "torture porn" film centralize graphic depictions of violence. This article inspects the nature of these portrayals by examining a motif commonly found in the cinema of homicide, dubbed here the "pure moment of murder": that is, the moment in which two characters’ bodies adjoin onscreen in an instance of graphic violence. By exploring a number of these incidents (and their various modes of representation) in American horror films ranging from Psycho (...) (1960) to Saw VI (2009), the article aims to expound how these images of slaughter demonstrate (albeit in an augmented, hyperbolic manner) a number of long-standing problems surrounding selfhood that continue to fuel philosophical discussion. The article argues that the visual adjoining of victim and killer onscreen echoes the conundrum that in order to attain identity, the individual requires and yet simultaneously repudiates the Other that constitutes unique subjectivity. (shrink)

This chapter contains sections titled: The Key: Losing Oneself Windsurfing Performance, Psychology, and Embedded Cognition Windsurfing and Flow.

Horror film sequels have not received as much serious critical attention as they deserve – this is especially true of the Saw franchise, which has suffered a general dismissal under the derogatory banner ‘Torture Porn’. In this article I use detailed textual analysis of the Saw series to expound how film sequels employ and complicate expected temporal and spatial relations – in particular, I investigate how the Saw sequels tie space and time into their narrative, methodological and moral sensibilities. Far (...) from being a gimmick or a means of ensuring loyalty to the franchise (one has to be familiar with the events of previous episodes to ascertain what is happening), it is my contention that the Saw cycle directly requests that we examine the nature of space and time, in terms of both cinematic technique and our lived, off-screen temporal/spatial orientations. -/- . (shrink)

Erotic Nights of the Living Dead (1980) may have featured both animated corpses and hardcore sex scenes, but only recently have Re-Penetrator (2004) and Porn of the Dead (2006) managed to fully eroticise the living dead, allowing these creatures to engage in intercourse. In doing so, the usually a-subjective zombie is allotted a key facet of identity - sexuality. This development within the sub-genre needs accounting for outside of the contexts of porn studies, where it has only been briefly touched (...) upon in relation to its "extremity". -/- Moreover, the gendering of the undead opens a discussion which expand the horizons of zombie studies away from the overt critiques of capitalism, race and psychoanalysis that have pervaded analyses of these narratives. The dichotomy of binary oppositions so often associated with psychoanalytic approaches dictates that "passive (non-phallic) = female", and "active (phallic) = male". In these terms, the zombies are feminine - soft-bodied and passive, despite their murderous intent (which has been accounted for, by Barabara Creed (1993) amongst others, by invoking the vagina-dentata motif). Humans (active) are deemed masculine, not least since they tend to dispatch zombies with "phallic guns". Taking this logic to an extreme, the zombie may be read as allegorising feminism: the "feminised" figures (zombies) become fearsome in their will to exert themselves despite their seeming disempowerment in the face of "masculine" hegemony. Ultimately, by grouping together as a force, they overthrow or at least significantly damage that "normality" (an ideological paradigm usually read in terms of race, class and economics). (shrink)

Ronald Dworkin argued that Advance Directives informed by a principle of autonomy ought to guide decisions in relation to the treatment of those in care for dementia. The principle of autonomy in play presupposes a form of competence that is tied to the individual person making the Directive. This paper challenges this individualist assumption. It does so by pointing out that the competence of a patient is inherently relational, and the key illustrative case to make this point is the case (...) of music therapy. In music therapy, a relatively recent treatment modality in aged care, patients previously thought to be permanently unresponsive are shown on the contrary to be capable of significant levels of social agency. The conclusion to draw is that Advance Directives that fail to acknowledge the real possibility of such relational competence are misapplied. (shrink)

This chapter explores the tentative line between erotic spectacle and horror; a judgement that is problematic given that is based on an axis of moral or ideological normality. The contexts of viewing impact on the status of ‘obscene’ images, both in terms of the communities that view them and their motivation for viewing; for sexual arousal, out of morbid curiosity or malevolence, or perhaps all three simultaneously. The reception of an obscene image is largely based upon the issue of viewer (...) consent, but this itself comes at the expense of the reality of bodies depicted, that are pushed to (and beyond) their limits. The chapter examines the moral and philosophical implications of desires that place the body in extreme states of sexualized deconstruction - both real and faked – and how these apply to images and communities in cyberspace. (shrink)