Neil Tennant was the first to propose a proof-theoretic criterion for paradoxicality, a framework in which a paradox, formalized through natural deduction, is derived from an unacceptable conclusion that employs a certain form of id est inferences and generates an infinite reduction sequence. Tennant hypothesized that any derivation in natural deduction that formalizes a genuine paradox would meet this criterion, and he argued that while the liar paradox is genuine, Russell's paradox is not. -/- The present paper delves into Tennant's (...) conjecture for genuine paradoxes and suggests that to validate the conjecture, one of two issues must be addressed. The first issue is the need for a philosophical consensus on the identification of a genuine paradox in an informal sense. The second issue is the requirement for a uniform approach to formalize paradoxes in natural deduction. If either of these issues is addressed, the conjecture could be validated, or at the very least, it could hold philosophical importance in delineating the proof-theoretic features of paradoxicality. (shrink)

We evaluated the reliability, validity, and differential item functioning (DIF) of a shorter version of the Defining Issues Test-1 (DIT-1), the behavioral DIT (bDIT), measuring the development of moral reasoning. 353 college students (81 males, 271 females, 1 not reported; age M = 18.64 years, SD = 1.20 years) who were taking introductory psychology classes at a public University in a suburb area in the Southern United States participated in the present study. First, we examined the reliability of the bDIT (...) using Cronbach’s α and its concurrent validity with the original DIT-1 using disattenuated correlation. Second, we compared the test duration between the two measures. Third, we tested the DIF of each question between males and females. Findings reported that first, the bDIT showed acceptable reliability and good concurrent validity. Second, the test duration could be significantly shortened by employing the bDIT. Third, DIF results indicated that the bDIT items did not favour any gender. Practical implications of the present study based on the reported findings are discussed. (shrink)

Introduction The Defining Issues Test (DIT) aimed to measure one’s moral judgment development in terms of moral reasoning. The Neo-Kohlbergian approach, which is an elaboration of Kohlbergian theory, focuses on the continuous development of postconventional moral reasoning, which constitutes the theoretical basis of the DIT. However, very few studies have directly tested the internal structure of the DIT, which would indicate its construct validity. Objectives Using the DIT-2, a later revision of the DIT, we examined whether a bi-factor model or (...) 3-factor CFA model showed a better model fit. The Neo-Kohlbergian theory of moral judgment development, which constitutes the theoretical basis for the DIT-2, proposes that moral judgment development occurs continuously and that it can be better explained with a soft-stage model. Given these assertions, we assumed that the bi-factor model, which considers the Schema-General Moral Judgment (SGMJ), might be more consistent with Neo-Kohlbergian theory. Methods We analyzed a large dataset collected from undergraduate students. We performed confirmatory factor analysis (CFA) via weighted least squares. A 3-factor CFA based on the DIT-2 manual and a bi-factor model were compared for model fit. The three factors in the 3-factor CFA were labeled as moral development schemas in Neo-Kohlbergian theory (i.e., personal interests, maintaining norms, and postconventional schemas). The bi-factor model included the SGMJ in addition to the three factors. Results In general, the bi-factor model showed a better model fit compared with the 3-factor CFA model although both models reported acceptable model fit indices. Conclusion We found that the DIT-2 scale is a valid measure of the internal structure of moral reasoning development using both CFA and bi-factor models. In addition, we conclude that the soft-stage model, posited by the Neo-Kohlbergian approach to moral judgment development, can be better supported with the bi-factor model that was tested in the present study. (shrink)

In this dissertation, we shall investigate whether Tennant's criterion for paradoxicality(TCP) can be a correct criterion for genuine paradoxes and whether the requirement of a normal derivation(RND) can be a proof-theoretic solution to the paradoxes. Tennant’s criterion has two types of counterexamples. The one is a case which raises the problem of overgeneration that TCP makes a paradoxical derivation non-paradoxical. The other is one which generates the problem of undergeneration that TCP renders a non-paradoxical derivation paradoxical. Chapter 2 deals with (...) the problem of undergeneration and Chapter 3 concerns the problem of overgeneration. Chapter 2 discusses that Tenant’s diagnosis of the counterexample which applies CR−rule and causes the undergeneration problem is not correct and presents a solution to the problem of undergeneration. Chapter 3 argues that Tennant’s diagnosis of the counterexample raising the overgeneration problem is wrong and provides a solution to the problem. Finally, Chapter 4 addresses what should be explicated in order for RND to be a proof-theoretic solution to the paradoxes. (shrink)

The goal of the current chapter is to discuss how counterfactual thinking serves a more general sense-making function and to delineate the mechanisms by which this may occur. To demonstrate the meaning as sense-making function of counterfactual thinking, we (Lindberg & Markman, 2012) selected a historical event that was likely to be compelling to most student participants, yet not one with which most students would be familiar. This allowed for the manipulation of event details for the purpose of examining underlying (...) cognitive mechanisms believed to influence the sense-making process. Two sets of studies were conducted. The current work lends further support for the sense-making function of counterfactual thinking. (shrink)

The experience of embarrassment was explored in two experiments comparing monolingual and bilingual speakers from cultures varying in the degree of elabo- ration of the embarrassment lexicon. In Experiment 1, narratives in English or Korean depicting three types of embarrassing predicaments were to be rated on their embarrassability and humorousness by Korean-English bilinguals, Korean monolinguals, and Euro-American monolinguals. All groups judged certain predicaments (involving social gaffes) to be the most embarrassing. However, significant group and language differences occurred in judgments of (...) the inten- sity of embarrassment and amusement judgments evoked. Euro-Americans ex- hibited higher overall levels of amusement than the two Korean groups who, in turn, reported higher levels of embarrassment, particularly for certain predica- ment types and contexts (ingroup members present). Further, for the bilinguals, inept performance predicaments in English were judged more embarrassing than those in Korean, whereas all predicament types were judged more amusing when framed with English emotion labels. Bilinguals also appeared to show a heightened embarrassability relative to both monolingual groups. Experiment 2 found lexical selection differences in open-ended responses to embarrassing predicaments depicted in each language, with Euro-Americans preferring to give justifications or use humor to minimize the embarrassment and Korean-English bilinguals preferring to give apologies or say nothing. The findings are interpret- ed to reflect the influence of culturally-mediated schemas guiding the activation and processing of emotion vocabulary. (shrink)

While investigating the value of achievements, Dunkle claims that lucky achievements are possible. For instance, if a person does great works, then it is possible that the works have the status of achievements, even if luck plays a crucial role in doing the great works. Rather than examining Dunkle’s claim, this paper proceeds discussion under the assumption that lucky achievements are possible. In particular, based on this assumption, this paper suggests a new approach to the nature of achievement named the (...) Comparative Value Approach. According to the comparative value approach, a product can have the status of an achievement if the product is valuable in an achievement-relevant domain, and in that domain the product is valuable more than most other items which either have been achieved or can be achieved by others. This paper shows that the comparative value approach successfully explains the cases of achievements, including the cases of lucky achievements. Besides this reason, this paper provides three more reasons to show that the comparative value approach is a feasible view of achievements. The comparative value approach can accommodate the fact that there are various kinds of achievements; the approach can explain the relation between the nature of achievement and the achievement-value of a product; and the approach can show why in determining the status of a product it matters that for average people achieving a similar kind of product is sufficiently difficult. Based on these four reasons, this paper concludes that the comparative value approach is a plausible understanding of achievements. (shrink)

Simion and Kelp explain the trustworthiness of an AI based on that AI’s disposition to meet its obligations. Roughly speaking, according to Simion and Kelp, an AI is trustworthy regarding its task if and only if that AI is obliged to complete the task and its disposition to complete the task is strong enough. Furthermore, an AI is obliged to complete a task in the case where the task is the AI’s etiological function or design function. This account has a (...) strength in that it can provide a unificatory rationale for the trustworthy-making properties of AIs. According to this account, being explainable, being safe, and being transparent are the trustworthy-making properties of an AI because an AI can fulfill its etiological or design functions in the case where it is explainable, safe, and transparent. This paper shows that though Simion and Kelp’s account has a strength, this account is not satisfactory for two reasons. The first reason is that an AI’s trustworthiness is not determined just by the AI’s disposition to meet obligations, and the second reason is that it is difficult to explain how an AI’s etiological function and design function have to do with that AI’s obligations. To provide a full-fledged account, Simion and Kelp should dismiss these concerns. (shrink)

The present research investigated the relationship between meaning perceptions and the structure of counterfactual thoughts. In Study 1, participants reflected on how turning points in their lives could have turned out otherwise. Those who were instructed to engage in subtractive (e.g., If only I had not done X...”) counterfactual thinking (SCT) about those turning points subsequently reported higher meaning perceptions than did those who engaged in additive (e.g., ‘If only I had done X...’) counterfactual thinking (ACT). In Study 2, participants (...) who reflected upon life events from the perspective of understanding the past (versus preparing for the future) tended to engage in more SCT than ACT. Finally, in Study 3, participants engaged in more SCT than ACT about life events whose meaning was perceived as certain (as opposed to uncertain) – presumably to maintain their pre-existing sense of meaning. Implications for the study of counterfactual thinking and meaning are discussed. (shrink)

In the present paper, we prove the normalization theorem and the consistency of the first-order classical logic with disjunctive syllogism. First, we propose the natural deduction system SCD for classical propositional logic having rules for conjunction, implication, negation, and disjunction. The rules for disjunctive syllogism are regarded as the rules for disjunction. After we prove the normalization theorem and the consistency of SCD, we extend SCD to the system SPCD for the first-order classical logic with disjunctive syllogism. It can be (...) shown that SPCD is conservative extension to SCD. Then, the normalization theorem and the consistency of SPCD are given. (shrink)

The redemption thesis assumes that how events in a person’s life are related to one another is important in evaluating the person’s welfare throughout life. In particular, according to this thesis of welfare, the fact that a person’s previous hardships contribute to bringing out the same person’s later successes, and the person would regard the hardships as having been worthwhile in light of the successes makes the person’s life better for the person herself. Recently, Ian D. Dunkle provided four objections (...) to the redemption thesis: the intuition concern, the different redemptions argument, the downplaying hardships argument, and the reconciled irreconcilables argument. This paper examines these four objections. In particular, this paper dismisses all the objections showing that the redemption thesis bases on an appealing idea, does not consider the degree of hardship significant in itself, has plausible reasons to evaluate hardships not as serious as people think, and can successfully reconcile its synchronic and diachronic evaluations. (shrink)

Some goals have special significance to agents. For instance, an agent could find her life worth living because she is pursuing her current goal, and the agent could also think that her previous life has no value because she did not pursue the current goal. If an agent’s current goal has special importance to the agent, then in terms of prudence the agent’s decision to obtain her current goal could be permissible even in the case where achieving her previous goal (...) brings out larger advantages. A widely endorsed thesis of prudence (i.e. the temporal neutrality thesis) does not successfully explain this phenomenon of goal achievement. Furthermore, the present-aim thesis and the harmony thesis also fail in explaining why an agent has prudential reason to prioritize her current goal. This paper introduces a new thesis of prudence, according to which an agent’s caring is significant in deciding whether the agent’s actions are prudentially permissible. In particular, after introducing this thesis named the care thesis, I argue that the care thesis can explain why an agent has reason to prioritize her current goal if the agent finds her life worth living due to her current goal. It is permissible that an agent obtains her current goal rather than previous goal because achieving her current goal benefits the agent’s cared one (i.e. the self who pursues her current goal). (shrink)

To develop the land administration sector, it is important to examine the difficulties faced and requests made by citizens. Accordingly, this study analyzes the Voice of Citizens data relating to land administration in an attempt to identify characteristics of civil complaints in the spatial sector that are unique to land administration. This research builds geospatial Database by combining civil complaint data and spatial information to the analysis of interest of the civil complaint area in order to identify the major keywords (...) on the map. The analysis reveals that civil complaints relating to land administration pertain mostly to the operational methods and services of institutions in charge of the civil complaints, rather than to the ownership and results of land administration. These results indicate that response and operational methods must be determined prior to the administrative process relating to land ownership. This study further confirms that the civil complaints relating to ownership generally arose out of the mountainous and coastal regions, rather than cities. Going forward, this study could be used as reference material for determining policy priorities focusing, in particular, on the policy consumers’ utilizing data on civil complaints in terms of government policy. (shrink)

Incremental implicit theories are associated with a belief regarding it is possible to improve one’s intelligence or ability through efforts. Previous studies have demonstrated that incremental implicit theories contributed to better academic achievement and positive youth development. Our study aimed to examine whether incremental implicit theories of morality significantly influenced change in students’ engagement in voluntary service activities. In our study, 54 Korean college students for Study 1 and 180 Korean 8th graders for Study 2 were recruited to conduct two (...) two-wave studies. We surveyed participants’ implicit theories of morality and participation in voluntary service activities. The effect of implicit theories of morality on change in service engagement was analyzed through regression analysis. In Study 1, the moral growth mindset significantly moderated longitudinal change in service engagement. In Study 2, the moral growth mindset significantly influenced engagement in art-related activities, while it significantly moderated change in engagement in youth-related activities. (shrink)

Artificial Intelligence and Sensor Technologies the Future of Special Education for Students with Intellectual and Developmental Disabilities.

As systems based on opaque Artificial Intelligence (AI) continue to flourish in diverse real-world applications, understanding these black box models has become paramount. In response, Explainable AI (XAI) has emerged as a field of research with practical and ethical benefits across various domains. This paper not only highlights the advancements in XAI and its application in real-world scenarios but also addresses the ongoing challenges within XAI, emphasizing the need for broader perspectives and collaborative efforts. We bring together experts from diverse (...) fields to identify open problems, striving to synchronize research agendas and accelerate XAI in practical applications. By fostering collaborative discussion and interdisciplinary cooperation, we aim to propel XAI forward, contributing to its continued success. Our goal is to put forward a comprehensive proposal for advancing XAI. To achieve this goal, we present a manifesto of 27 open problems categorized into nine categories. These challenges encapsulate the complexities and nuances of XAI and offer a road map for future research. For each problem, we provide promising research directions in the hope of harnessing the collective intelligence of interested stakeholders. (shrink)

We explored the relationship between 24 character strengths measured by the Global Assessment of Character Strengths (GACS), which was revised from the original VIA instrument, and moral functioning comprising postconventional moral reasoning, empathic traits and moral identity. Bayesian Model Averaging (BMA) was employed to explore the best models, which were more parsimonious than full regression models estimated through frequentist regression, predicting moral functioning indicators with the 24 candidate character strength predictors. Our exploration was conducted with a dataset collected from 666 (...) college students at a public university in the Southern United States. Results showed that character strengths as measured by GACS partially predicted relevant moral functioning indicators. Performance evaluation results demonstrated that the best models identified by BMA performed significantly better than the full models estimated by frequentist regression in terms of AIC, BIC, and cross-validation accuracy. We discuss theoretical and methodological implications of the findings for future studies addressing character strengths and moral functioning. (shrink)

What constitutes a good life? A hedonist’s answer to this question is rather simple— more pleasure, less pain. While hedonism was previously a widely accepted belief, it now suffers from several crucial objections. A challenge particularly vexing to hedonists is the Philosophy of Swine: could it be possible that our lives may be less than that of a theoretical swine? In this essay, I argue that lifetime hedonism, the view of hedonism concerned with one’s total lifelong well-being, does not survive (...) this objection. In particular, I will refute the counterarguments that modern-day hedonist, Ben Bramble, presents against the Philosophy of Swine objection. -/- . (shrink)

We examined the relationship between moral foundations, empathic traits, and moral identity using an online survey via Mechanical Turk. In order to determine how moral foundations contribute to empathic traits and moral identity, we performed classical correlation analysis as well as Bayesian correlation analysis, Bayesian ANCOVA, and Bayesian regression analysis. Results showed that individualizing foundations (harm/care, fairness/reciprocity) and binding foundations (ingroup/loyalty, authority/respect, purity/sanctity) had various different relationships with empathic traits. In addition, the individualizing versus binding foundations showed somewhat reverse relationships (...) with internalization and symbolization of moral identity. This suggests that moral foundations can contribute to further understanding of empathic traits and moral identity and how they relate to moral behavior in reality. We discuss the implications of these results for moral educators when starting to teach students about moral issues. (shrink)

Background: Moral Growth Mindset (MGM) is a belief about whether one can become a morally better person through efforts. Prior research showed that MGM is positively associated with promotion of moral motivation among adolescents and young adults. We developed and tested the English version of the MGM measure in this study with data collected from college student participants. Methods: In Study 1, we tested the reliability and validity of the MGM measure with two-wave data (N = 212, Age mean = (...) 24.18 years, SD = 7.82 years). In Study 2, we retested the construct validity of the MGM measure once again and its association with other moral and positive psychological indicators to test its convergent and discriminant validity (N = 275, Age mean = 22.02 years, SD = 6.34 years). Results: We found that the MGM measure was reliable and valid from Study 1. In Study 2, the results indicated that the MGM was well correlated with other moral and positive psychological indicators as expected. Conclusions: We developed and validated the English version of the MGM measure in the present study. The results from studies 1 and 2 supported the reliability and validity of the MGM measure. Given this, we found that the English version of the MGM measure can measure one’s MGM as we intended. (shrink)

We examined the links between moral identity—the centrality of moral principles to identity—and political purpose during emerging adulthood. We analyzed data from two waves of a longitudinal study of civic purpose. T1 surveys were collected before high school graduation and T2 survey were collected two years later. We categorized people (N = 1,578 at T1 and N = 480 at T2) into political purpose groups based on the person-centered perspective and then performed multinomial logistic regression analysis to test whether moral (...) identity was associated with categories of political purpose. The findings from our study indicate that moral identity at T1 is linked with the maintenance and formation of T2 political purpose. (shrink)

This study investigated changes in the prevalence of depression, stress, and suicidal attempts during the COVID-19 pandemic. The ≥19-year-old population in the Korea National Health and Nutrition Examination Survey in 2019 and 2020 was included. The histories of depression, stress, and suicidal attempts were compared between the 2019 and 2020 cohorts using multiple logistic regression analysis with complex sampling. The prevalence of depression was not significantly different between the 2019 and 2020 groups (4.1% vs. 4.5%, p = 0.326). The prevalence (...) of stress and suicide attempts was also not significantly different between groups (all p > 0.05). The rates of depression, stress, and suicide attempts were not associated with the 2020 group compared to the 2019 group (all p > 0.05). The 19- to 39-year-old group in the 2020 group indicated a higher rate of depression (diagnosed by physicians) than the 19- to 39-year-old group in the 2019 group (adjusted odds ratio = 1.58, 95% confidence intervals = 1.00–2.50, p = 0.049). The risks of depression, stress, and suicidal attempts were not related to the COVID-19 pandemic in Korean adults. A young adult population demonstrated an increased risk of depression associated with the COVID-19 pandemic. (shrink)

“Sàn đấu” Hiệp hội Các nhà biên tập khoa học châu Âu vừa chứng kiến trận so găng quyết liệt giữa hai đối thủ cân tài, cân sức: Chủ tịch chi hội EASE Việt Nam TS. Vương Quân Hoàng và TS. Haseeb Md. Irfanullah, Ban Biên tập Tạp chí Learned Publishing.

Ngụ ngôn về ông bói cá cho biết ông là nhân vật khá tinh nghịch, có lúc ngớ ngẩn như trẻ con, nhưng nhiều khi không thiếu những lời triết lý cũng ra gì phết! Vậy nên tác giả bình sách N. P. Tri cho rằng, chuyện của ông dành cho cả trẻ em lẫn người đã trưởng thành cũng rất có lý. Ở một góc nhìn khác, tác giả D. T. M. Phượng lại nhận thấy một dịp để người (...) đọc đồng hành, phiêu lưu cùng với ông “triết gia Xóm Chim” để có thể đánh giá xem ông ấy ngẩn ngơ thật hay không. (shrink)

Săn bắt tê tê là câu chuyện đã kéo dài nhiều thập niên. Tê tê bị săn bắt và kinh doanh lậu nhiều tới mức đã có không biết bao nhiêu phim ảnh, phóng sự điều tra và cả sách bàn về việc này. Một cuốn đáng đọc nói về săn bắt động vật hoang dã để tiêu thụ học theo kiểu cách xa hoa là Poached. Nhưng điều tra khảo sát 1017 cư dân tại 105 ngôi làng ở nông (...) thôn và vùng rừng của Nepal, được xuất bản cuối tháng 8-2023 trên ấn phẩm Conservation Science and Practice (Wiley), mới thực sự ở quy mô bộc lộ được quan niệm và nhận thức đại diên cho cư dân Nepal đối với loài động vật hiền lành này. (shrink)

Sungho Choi has criticised Michael Strevens's counterexample to DavidLewis's final theory of "token" causation, causation as "influence." Iargue that, even if Choi's points are correct, Strevens's counterexampleremains useful in revealing a shortcoming of Lewis's theory. Thisshortcoming is that Lewis's theory does not properly account for*degrees* of causation. That is, even if Choi's points are correct,Lewis's theory does not capture an intuition we have about the*comparative* causal statuses of those events involved in Strevens'scounterexample (we might, for example, intuit (...) that Sylvie's ball-firingis *as much*/*more*/*less* a cause of the jar's shattering as/than isBruno's ball-firing). (shrink)

This paper develops two ideas with respect to dispositional properties: (1) Adapting a suggestion of Sungho Choi, it appears the conceptual distinction between dispositional and categorical properties can be drawn in terms of susceptibility to finks and antidotes. Dispositional, but not categorical properties, are not susceptible to intrinsic finks, nor are they remediable by intrinsic antidotes. (2) If correct, this suggests the possibility that some dispositions—those which lack any causal basis—may be insusceptible to any fink or antidote. Since finks (...) and antidotes are a major obstacle to a conditional analysis of dispositions, these dispositions that are unfinkable may be successfully analysed by the conditional analysis of dispositions. This result is of importance for those who think that the fundamental properties might be dispositions which lack any distinct causal basis, because it suggests that these properties, if they exist, can be analysed by simple conditionals and that they will not be subject to ceteris paribus laws. (shrink)

Philosophers disagree over whether dispositions can be intrinsically finked or masked. Choi suggests that there are no clear, relevant differences between cases where intrinsic finks would be absurd and those where they seem plausible, and as a result rejects them wholesale. Here, I highlight two features of dispositional properties which, when considered together, provide a plausible explanation for when dispositions can be subject to intrinsic finks and when not.

This paper outlines new work in cross-cultural psychology largely drawn from Nisbett, Choi, and Smith (Cognition, 65, 15–32, 1997); Nisbett, Peng, Choi, & Norenzayan, Psychological Review, 108(2), 291–310, 2001; Nisbett, The Geography of Thought: How Asians and Westerners Think Differently...and Why. New York: Free Press 2003), Ji, Zhang and Nisbett (Journal of Personality and Social Psychology, 87(1), 57–65, 2004), Norenzayan (2000) and Peng (Naive Dialecticism and its Effects on Reasoning and Judgement about Contradiction. University of Michigan, Ann Arbor, (...) Michigan 1997) Peng and Nisbett (Cross-Cultural Similarities and Differences in the Understanding of Physical Causality. Paper presented at the Science and Culture: Proceedings of the Seventh Interdisciplinary Conference on Science and Culture, Frankfort, K. Y. 1996), and Peng, Ames, & Knowles (Culture and Human Inference: Perspectives from three traditions. In: D. Matsumoto (Ed.), Handbook of Cross-Cultural Psychology (pp. 1–2). Oxford: Oxford University Press 2000). The paper argues that the findings on cultural influences on inference-making have implications for teaching and education generally, and specifically for the debate on conceptions and misconceptions of Asian students studying in western tertiary institutions around the world. The position defended is that, while there seems to be compelling empirical evidence for intercultural differences in thought patterns, these patterns are, for the most part, insignificant in everyday exchanges, though language and culture might subtlety modulate our inference-making at the margins. Linguistic determinism however is not defended. Nonetheless, the evidence provides food for thought, and it needs to inform the recent debates about international students studying overseas. (shrink)

Temporal Changes in Ovarian Gonadotropin-Releasing Hormone mRNA Levels by Gonadotropins in the Rat Sung Ho Lee, Eun-Seob Song, Sun Kyeong Yu, Changmee Kim, Dae Kee Lee, Wan Sung Choi l and Kyungjin Kim* Department of Molecular Biofogy and SRC for Cell Differentiation, Seoul National University, Seoul 150-742, Korea; IDepartment of Anatomy, College of Medicine, Gyeongsanf; National University, Chinju 660-280, Korea (Recei·. cd on December 29, 1993) The present study examines whether gonadotropins are involved in the regulation of ovarian GnRH (...) gene expression and how ovarian GnRH gene expression temporalJy correlates with alterations in hypothalamic GnRH, pituitary LH~ gene expression in respons to gonadotropins. Hypothalamic and ovarian GnRH mRNA and pituitary LH~ mRNA levels were determined by respective RNA-blot hybridizations, and ovarian GnRH and estradiol contents and serum LH levels were measured by respective radioimmunoassays. Three animal models such as 1) PMSG-treated, 2) PMSG and heG-treated immature rats and 3) proestrous stage of adult rats were used. Immature rats (25-days old) were administered with PMSG (10 iu) at 10:00 hand 48 h later with heG (10 iu) to induce ovulation. In the PMSG-injected model, hypothalamic GnRH mRNA levels were markedly augmented about 9-fold at 50 h, and pituitary LH mRNA 3-fold at 52 h after PMSG administration. Serum LH levels were increased to the preovulatory surge levels at 56 h, and ovarian GnRH mRNA levels were augmented 4-fold at 60 h after PMSG injection. Administration of heG also induced a marked enhancement in ovarian GnRH mRNA levels in comparison to the values shown in both intact and PMSGtreated rats at 52 hand 54 h, respectively. In the proestrous stage of normal adult rats, pituitary LH~ mRNA levels were peaked at 16:00 h. The preovulatory LH surge was evident at 4 h before increment in ovarian GnRH mRNA levels as shown in PMSG-treated rats. The present study clearly showed the sequential increase in hypothalamic GnRH mRNA, pituitary LH~ mRNA and ovarian GnRH mRNA levels, indicating that ovarian GnRH may play a possible role in the control of follicular maturation and the ovulation process. (shrink)

(Dân trí) - Bạn hãy thử hình dung một bức tranh thể hiện hình ảnh một thương gia cưỡi một chú lạc đà. Dưới chân họ chỉ có cát nóng bỏng của sa mạc khô cằn, phía sau lưng họ là ánh mặt trời chói lòa, bỏng rát. Hai bên đường chỉ có sương rồng gai góc, như biểu trưng cho hành trình vất vả đầy chông gai. Một điều gây bất ngờ: chú lạc đà lại kéo theo một chiếc (...) xe hơi sang trọng. (shrink)

Biến đổi khí hậu, thường được gọi là sự nóng lên toàn cầu, hiện đang ngày càng trở thành thách thức nghiêm trọng nhất đối với hành tinh của chúng ta. Vấn đề này vô cùng phức tạp, chủ yếu bởi việc con người liên tục thải ra khí nhà kính vào khí quyển, gây ra những hậu quả đáng kể và ảnh hưởng khắp mọi khía cạnh của môi trường, xã hội và kinh tế toàn cầu. Mặc dù hầu (...) hết các nhà khoa học về chuyên ngành khí hậu đều đồng thuận rằng hoạt động của con người đang đẩy biến đổi khí hậu ngày càng trầm trọng hơn, nhưng một phần xã hội vẫn còn hoài nghi hoặc từ chối thực tế này. Cuộc tranh cãi xoay quanh sự nóng lên toàn cầu liên quan đến việc xác định liệu hiện tượng này có đang diễn ra và mức độ nghiêm trọng của nó tới đâu. Các câu hỏi còn liên quan đến nguyên nhân gây ra biến đổi khí hậu, cũng như việc nên hay không nên thực hiện các biện pháp hạn chế và cách thực hiện chúng. Bài viết này tìm hiểu nguyên nhân, hậu quả và ý nghĩa của việc phủ nhận biến đổi khí hậu, nhấn mạnh tầm quan trọng của việc giải quyết vấn đề này vì lợi ích của hành tinh chúng ta và các thế hệ tương lai. (shrink)

Nay bố cáo vậy để lỡ mai kia thấy vắng bóng Chẫu ta, thì tức là đang đi học đổi mới sáng tạo đấy, chứ không phải chơi nhởi, lang bạt gì đâu.

Thảm họa thiên nhiên luôn gây ra những tổn thất lớn về người và của. Với Florida, Hurricane Idalia 2023 chính là một thảm họa khắc nghiệt. Chỉ mới bắt đầu, nhưng cơn bão đã gây ngập lụt, và làm nửa triệu dân Bắc Florida và Georgia mất điện. Nước ngập hàng mét. Thế mà cuộc đấu chính trị đã dẫn tới một điều kỳ lạ, Thống đốc Florida, Ron DeSantis, đã từ chối trợ cấp liên bang trị giá 5 (...) triệu USD để xây dựng chương trình hỗ trợ tiền cho cư dân bị ảnh hưởng muốn trang bị thêm các thiết bị đồ dùng gia đình giúp hạn chế tổn thất năng lượng. Điều này cũng đồng nghĩa với việc Florida sẽ không thể tiếp cận nguồn tài chính 341 triệu USD cho cư dân, liên quan tới Inflation Reduction Act. DeSantis cũng từ chối luôn 3 triệu USD quỹ IRA hỗ trợ chống ô nhiễm cũng như chương trình “Solar for All” giúp người nghèo nhận được các tấm pin mặt trời. Đây cũng là chương trình trọng điểm của chính sách chống khủng hoảng khí hậu của Tổng thống Joe Biden. (shrink)

Các ban biên tập họ biết rõ rằng quá trình nộp bài của tác giả gặp nhiều thử thách, bất trắc và việc bị từ chối sẽ khó khăn nhiều bề với tác giả.

Fumiko Kaneko was a female anarchist philosopher born in Japan in 1903. With her Korean partner Pak Yol, she founded the anarchist collective “Futei-sha” which published many articles arguing for anarchism and direct action (“Futei-sha” is named after “Futei-Senjin”, a government term for malcontent Koreans). Both Fumiko and Pak were pre-emptively detained during the major earthquake in 1923. During the detention, they testified that they had plotted to bomb the emperor’s son, which resulted in a death sentence for them. Though (...) they were pardoned, Fumiko refused the pardon and killed herself in prison at the age of 23. Her life is candidly written in her autobiography which has been translated into English (Kaneko 1991). In this book, we can see her powerful ego which was developed throughout her extremely oppressed life. Her philosophy is more explicitly expressed in her testimony at her trial. Also, I must note that there is a fantastic Korean film on Fumiko and Pak called Anarchist from Colony in which Korean actress Choi Hee-seo fabulously portrayed Fumiko, expressing Fumiko’s joyful aspect. -/- This article will examine her life story as well as her anarchist philosophy which I will refer to as the anarchism of truthfulness. -/- . (shrink)

COVID-19 bùng phát lần 2 đang gây lo lắng ở Việt Nam. Ảnh hưởng tiêu cực của dịch bệnh có thể cảm nhận được rất rõ trong công việc. Ngoài cản trở và đình trệ với sản xuất, công việc biên tập bình duyệt cũng bị tồn đọng, dẫn đến chờ đợi kéo dài. Tỷ lệ từ chối cũng có khuynh hướng tăng vọt.

This is a review of *Knowledge, Belief and God: New Insights in Religious Epistemology* (edited by Matthew Benton, John Hawthorne, and Dani Rabinowitz). The review briefly discusses the contributed essays by Benton and Isaac Choi.