Life is short and transient--Japanese people call this sentiment mujokan. However, what if we could sweep away the "despair" looming over the present age by proactively accepting this mujo (transience)? Perusing the thought of mujo from the perspectives of philosophy, literature, art and religion, Takeuchi delves into the view of life and death unique to the Japanese people who have shared "grief" and "pain" with each other, as well as into the very core of their underlying spirit." -- Publisher's (...) description. (shrink)

In this article, we develop and clarify some of the basic combinatorial properties of the new notion of n-dependence recently introduced by Shelah. In the same way as dependence of a theory means its inability to encode a bipartite random graph with a definable edge relation, n-dependence corresponds to the inability to encode a random -partite -hypergraph with a definable edge relation. We characterize n-dependence by counting φ-types over finite sets, and in terms of the collapse of random ordered -hypergraph (...) indiscernibles down to order-indiscernibles. (shrink)

The volume D'al-Khwārizmī à Descartes is a monumental contribution to the world history of mathematical sciences, showing clearly that Arabic mathematics was an indispensable predecessor of early modern European mathematics. Roshdi Rashed is known, first of all, as an editor of classical mathematical writings in Arabic by such authors as al-Khwārizmī, Thābit ibn Qurra, Ibrāhīm ibn Sinān, Ibn al-Haytham, al-Khayyām, Sharaf al-Dīn al-Ṭūsī, as well as of the Arabic versions of Apollonius' Conics , Diophantus' Arithmetica , and Diocles' Burning Mirrors (...) . As the volume under review shows, he is also a historian of mathematics of the first class who has transformed historiography. This book is, in a sense, a manifesto of Prof. Rashed's entire œuvre. (shrink)

『不思議の国のアリス』の数学観から、古代ギリシャから現代への懐疑主義思想との格闘をたどって、数学的知識の成立根拠を探る。.

Nielsen's covert REM process model explains much of the mentation found in REM and NREM sleep, but stops short of postulating an interaction of waking cognitive processes with the dream mechanisms of REM sleep. It ranks with the Hobson et al. paper as a major theoretical advance. The Solms article does not surmount the ever-present problem of defining dreams in a manner conducive to advancing dream theory. Vertes & Eastman review the REM sleep and learning literature, but make questionable assumptions (...) in doing so. [Hobson et al.; Nielsen; Solms; Vertes & Eastman]. (shrink)

Nishida Kitaro's reformulation of the major issues of Western philosophy from a Zen standpoint of "absolute nothingness" and "absolutely contradictory self-identity" represents the boldest speculative enterprise of modern Japan, continued today by his successors in the "Kyoto School" of philosophy. This English translation of Intuition and Reflection in Self-Consciousness evokes the movement and flavor of the original, clarifies its obscurities, and eliminates the repetitions. It sheds new light on the philosopher's career, revealing a long struggle with such thinkers as Cohen, (...) Natorp, Husserl, Fichte, and Bergson, that ended with Nishida's break from the basic ontological assumptions of the West. Throughout labyrinthine arguments, Nishida never loses sight of his theme: the irreducibility and unobjectifiability of the act of self-consciousness which constitutes the self. Extensive annotation is provided for the first time in any edition of Nishida's work. Historians of Japanese philosophy and culture, and all those interested in the interaction of Eastern and Western thought-forms, now have a document which highlights many of the cultural, psychological, and intellectual dynamics that have shaped Japanese intellectual life in one of its most fascinating and ambitious manifestations. (shrink)

Poor sleep quality negatively affects memory performance, and working memory in particular. We investigated sleep habits related to sleep quality including sleep duration, daytime nap duration, nap frequency, and dream content recall frequency (DCRF). Declarative working memory can be subdivided into verbal working memory (VWM) and visuospatial working memory (VSWM). We hypothesized that sleep habits would have different effects on VWM and VSWM. To our knowledge, our study is the first to investigate differences between VWM and VSWM related to daytime (...) nap duration, nap frequency, and DCRF. Furthermore, we tested the hypothesis that the effects of duration and frequency of daytime naps and DCRF on VWM and VSWM differed according to sex. We assessed 779 healthy right-handed individuals (434 males and 345 females; mean age: 20.7 ± 1.8 years) using a digit span forward and backward VWM task, a forward and backward VSWM task, and sleep habits scales. A correlation analysis was used to test the relationships between VWM capacity (VWMC) and VSWM capacity (VSWMC) scores and sleep duration, nap duration, nap frequency, and DCRF. Furthermore, multiple regression analyses were conducted to identify factors associated with VWMC and VSWMC scores and to identify sex-related differences. We found significant positive correlations between VSWMC and nap duration and DCRF, and between VWMC and sleep duration in all subjects. Furthermore, we found that working memory capacity (WMC) was positively correlated with nap duration in males and with sleep duration in females, and DCRF was positively correlated with VSWMC in females. Our finding of sex-related differences in the effects of sleep habits on WMC has not been reported previously. The associations between WMC and sleep habits differed according to sex because of differences in the underlying neural correlates of VWM and VSWM, and effectiveness of the sleep habits in males and females. (shrink)

Background Previous reports have described that simple cognitive training using reading aloud and solving simple arithmetic calculations, so-called “learning therapy”, can improve executive functions and processing speed in the older adults. Nevertheless, it is not well-known whether learning therapy improve a wide range of cognitive functions or not. We investigated the beneficial effects of learning therapy on various cognitive functions in healthy older adults. Methods We used a single-blinded intervention with two groups (learning therapy group: LT and waiting list control (...) group: WL). Sixty-four elderly were randomly assigned to LT or WL. In LT, participants performed reading Japanese aloud and solving simple calculations training tasks for 6 months. WL did not participate in the intervention. We measured several cognitive functions before and after 6 months intervention periods. Results Compared to WL, results revealed that LT improved inhibition performance in executive functions (Stroop: LT (Mean = 3.88) vs. WL (Mean = 1.22), adjusted p =.013 and reverse Stroop LT (Mean = 3.22) vs. WL (Mean = 1.59), adjusted p =.015), verbal episodic memory (logical memory: LT (Mean = 4.59) vs. WL (Mean = 2.47), adjusted p =.015), focus attention(D-CAT: LT (Mean = 2.09) vs. WL (Mean = -0.59), adjusted p =.010) and processing speed compared to the waiting list control group (digit symbol coding: LT (Mean = 5.00) vs. WL (Mean = 1.13), adjusted p =.015 and symbol search: LT (Mean = 3.47) vs. WL (Mean = 1.81), adjusted p =.014). Discussion This RCT can showed the benefit of learning therapy on inhibition of executive functions, verbal episodic memory, focus attention, and processing speed in healthy elderly people. Our results were discussed under overlapping hypothesis. Trial registration “This trial was registered in The University Hospital Medical Information Network Clinical Trials Registry (UMIN000006998).”. (shrink)

Some people in Japan are still comfortable with the paternalistic role of doctors, but others wish that their own decisions would receive a greater amount of respect. A total of 747 students of universities and colleges and 114 parents of these students participated in a questionnaire survey. Most of the participants thought that autonomy should be respected in situations involving death with dignity and euthanasia, whereas it should not be respected in attempted suicide and involuntary admission of individuals with mental (...) illness. A cluster analysis revealed that the participants could be divided into the following groups: aid in dying advocates, complete libertarians, protectors of the mentally ill, complete paternalists, and questionables. The assertion of independence score of the Scale for Independent and Interdependent Construal of the Self showed a significant difference among the 5 clusters. These findings suggest that the traditional paternalistic relationship between doctor and patient is undergoing a gradual transformation in Japan. (shrink)

We introduce several concepts concerning the indiscernibility of trees. A tree is by definition an ordered set such that, for any a∈O, the initial segment {b∈O:b (...) A of the form η∈O, where O is a tree, and aη labeled by η is an element in M. Such a set A is also called a tree in this paper. We study the indiscernibility of trees A in general settings and apply the obtained results to the study of unstable theories. (shrink)

BackgroundMany genetic counseling studies have focused on anxiety status because clients of GC often feel anxious during their visits. Metacognition is known to be one of the causes of having an inappropriate thinking style. In this study, we examined the relationship between anxiety and the metacognitive status of GC clients according to their characteristics.MethodsThe participants were 106 clients who attended their first GC session in our hospital from November 2018 to March 2021. The survey items were the clients’ characteristics, anxiety (...) status at the time of the visit, and metacognitive status.ResultsHigh state anxiety and high trait anxiety were observed in 34.9 and 11.3% of clients, respectively. Clients who were a relative or had a family history were significantly more likely to have high state anxiety. As for metacognitive status, only negative beliefs about thoughts concerning uncontrollability and danger were associated with having an anxiety status. Furthermore, multivariate analysis showed that negative beliefs about thoughts concerning uncontrollability and danger were an independent determinant of higher state anxiety, but not being a relative or having a family history. Metacognitive status scores were significantly lower in clients than in the control group.ConclusionState anxiety was shown to be more dependent on negative beliefs about thoughts concerning uncontrollability and danger of GC clients than their characteristics such as being a relative or having a family history. The results of this study will contribute to the development of new GC psychosocial support measures to address the anxiety of GC clients. (shrink)

When a central government deals with local demands, it may strengthen political accountability of the local governments by political decentralization or offer benefits through economic assistance. An authoritarian regime uses economic assistance policy because political decentralization may contradict regime survival. Although economic benefits can be used to buy political support, the distribution of these benefits is seldom equal. We argue that the unequal distribution is more salient in regions where ethnic minorities reside because the unusual demographic composition of those areas (...) make it difficult for the national government to evaluate the performance of the local government who is responsible for the distribution of the economic benefits. As a result, economic assistance may backfire in ethnic regions and intensify their existing conflicts. We develop a simple formal model to illustrate our arguments and explore the cases of Xinjiang and Hong Kong for empirical analysis. (shrink)

This article examines how private equity returns in Asia are related to levels of legal protection and corruption. We utilize a unique data set comprising over 750 returns to private equity transactions across 20 developing and developed countries in Asia. The data indicate that legal protections are an important determinant of private equity returns in Asia, but also that private equity managers are able to mitigate the potential for corruption. The quality of legal system (including legal protections) is positively related (...) to returns. Inefficient legal protections negatively impact transaction structures and economic certainty when exiting investments. We also find that private equity managers, irrespective of the quality of legal system they are operating within, can mitigate the potential impact of corruption. Private equity returns are higher in countries with higher levels of corruption, controlling for legal systems. This finding is consistent with the view that private equity managers bring about organizational change to alleviate the costs of corruption. Our findings are robust to inclusion of controls for Hofstede cultural variables, economic conditions, and transaction specific characteristics, as well as consideration of econometric sample selection methods for unexited investments. (shrink)

一遍仏教やその周縁と対話し、無・型・身体性などを契機として日本独自の教育の構築を試みたユニークな教育再生論。.