In order to achieve flexible and smooth walking, we must accomplish subtasks (e.g., loading response, forward propulsion or swing initiation) within a gait cycle. To evaluate subtasks within a gait cycle, the analysis of muscle synergies may be effective. In the case of walking, extracted sets of muscle synergies characterize muscle patterns that relate to the subtasks within a gait cycle. Although previous studies have reported that the muscle synergies of individuals with disorders reflect impairments, a way to investigate the (...) instability in the activations of muscle synergies themselves has not been proposed. Thus, we investigated the local dynamic stability and orbital stability of activations of muscle synergies across various walking speeds using maximum Lyapunov exponents and maximum Floquet multipliers. We revealed that the local dynamic stability in the activations decreased with accelerated walking speeds. Contrary to the local dynamic stability, the orbital stability of the activations was almost constant across walking speeds. In addition, the increasing rates of maximum Lyapunov exponents were different among the muscle synergies. Therefore, the local dynamic stability in the activations might depend on the requirement of motor output related to the subtasks within a gait cycle. We concluded that the local dynamic stability in the activation of muscle synergies decrease as walking speed accelerates. On the other hand, the orbital stability is sustained across broad walking speeds. (shrink)

Pyridoxal 5′‐phosphate, the vitamin B6 derivative, acts as the coenzyme of many enzymes involved in amino acid metabolism. Exceptionally, this compound was found covalently bound to glycogen phosphorylase, the key enzyme in the regulation of glycogen metabolism. Although it is essential for the function of phosphorylase, its direct role has remained an enigma. We have recently found that the glucose moiety of pyridoxal (5′)diphospho (1)‐α‐D‐glucose, a conjugate of pyridoxal 5′‐phosphate and glucose 1‐phosphate through a pyrophosphate linkage, is transferred to the (...) nonreducing end of glycogen, forming a new α‐1,4‐glucosidic linkage. This finding emphasizes the importance of the direct phosphate‐phosphate interaction between the coenzyme and the substrate in the phosphorylase catalytic reaction. We have proposed a catalytic mechanism for phosphorylase in which the phosphate group of pyridoxal 5′‐phosphate acts as an electrophile to the phosphate group of glucose 1‐phosphate. This appears to represent the first instance of the direct involvement of a phosphate group in catalysis by enzymes. (shrink)

「教育学」の新しい領野を切り拓いてきた著者積年の集大成!日本の自生的な教育論の誕生に迫る。.

誕生から今日まで、文芸・演劇が芸術に占める位置ばどう変わっているのか?古今東西の具体的な動きに即しつつ、類型論的・理論的パースペクティブを示す。.

In lieu of an abstract, here is a brief excerpt of the content:The Journal of Aesthetic Education 37.4 (2003) 101-107 [Access article in PDF] Art Education in Lower Secondary Schools in Japan and the United Kingdom This essay compares the system and practice of art education in Japan and the United Kingdom at the lower secondary school level. Three surveys on how art is taught form the basis of this research. I conducted the first survey in 1992, distributed to 156 (...) art teachers in Japan on their "real" curricula and compared them with syllabus samplers of nationally authorized textbooks. From 1993 to 1994, I studied in the United Kingdom the newly introduced National Curriculum and performed a survey on its impact on classroomteaching in 49 art departments in secondary schools, mostly in England. Since 1994, I have participated in a joint study project on craft education in secondary schools in Japan and Britain, in which 717 Japanese schools are cooperating via a questionnaire survey. The issues common to these surveys are how art teachers respond to the national standards in their own teaching practice, and what these responses suggest for the future development of this subject. This essay identifies survey findings in both countries, together with overviews on the systems and cultural factors affecting the state of Art and its implementation in curricula. Japan and the United Kingdom: An Overview Let us look briefly at the historical background of the national curricula in Japan and the United Kingdom. The education system in Japan was established by the central government and has maintained its unity. After World War II, a new national Course of Study was recommended but was not compulsory. But in the legislation of 1958, this Course of Study became binding and a new subject called "Technology and Home Economics" was introduced. A new term, "design" was adopted in Art, "craft" was removed, and the time allocated to Art was drastically reduced. In the 1969 revision, five main areas of Art study were established: drawing (painting), sculpture, design, craft, and art appreciation. In 1977, a recommended time allocation for each area in Art was eliminated, and the five areas were reorganized into two fields: "expression" and "appreciation." Between 1969 and 1977, lower secondary schools in Japan allotted two compulsory hours per week for Art in grades 7 and 8, one compulsory hour and one non-compulsory hour in grade 9. However, after the revisions of 1989 and 1998, the time allotted for Art has gradually decreased. [End Page 101]In the United Kingdom, different educational systems developed concurrently, and through political and ideological conflicts, the involvement of central government gradually grew until an integrated school system was established. 1 The National Curriculum, first introduced through the Education Act of 1988, clearly indicates Art as compulsory from Years 1 to 9 in state schools. 2 The Courses of Study in Japan are separated into primary, lower, and upper secondary levels, however, the consistency of Art as a subject is not as clear. 3 In England, the content is not differentiated into the areas of art, craft, and design, but is organized as a series of processes common to these areas including investigation, creation, and evaluation, based upon knowledge and understanding.The United Kingdom has no national system for authorizing textbooks, but the examination board syllabus for the General Certificate ofSecondary Education (GCSE), for example, has influenced the school curriculum. Art departments of each secondary school function as fairly independent entities, taking responsibility for curriculum and study resources. In Japan, in most cases, lower and upper secondary schools are separated, with only about one art teacher per school, which means improving the curriculum is determined by the efforts of the individual teacher in a limited environment.We also need to consider the cultural background. The United Kingdom has made a notable effort to incorporate a multicultural perspective, based upon the urgent recognition that the country has become a multi-ethnic society. There is also a growing awareness in Western societies that individual expression should be approved in relation to the culture of a given social group. In Japan, it has... (shrink)

Alternative interpretations are proposed for the finding that market integration is positively related to fair behavior in experimental games. Market activities may produce market relevant concepts and stories that interpret experimental games as incidences of social exchange, and thus may enhance the relevance of (1) market-related preferences or (2) a decision heuristic designed for social exchange.

西田幾多郎の哲学は、単なる宗教体験の表現ではない合理的世界観である。その全貌を解読する時、われわれは、西田哲学が封印したもう一つの視点を発見する。そこであらわになるのは、驚くべき「時間」の真相―時間幻 想である。.

時間が流れるとはどういうことか。時間は本当に流れているのか。西田幾多郎は合理的に理解可能な一つの「世界」を描いた。「永遠の今の自己限定」に帰着するその全貌を解読する。そしてそこから、西田哲学が封印した もう一つの時間論が浮上する。.

日本の国家、国民精神、法学は、いかにあるべきか―。共和主義と立憲主義を理論的柱とし、国家共同体を支え、形成する国民の蒸神の在り方を探る「市民法学」の輪郭を提示。.

This paper offers some ideas and methods of consensus building towards integration of values in flood control, environment, and landscape. These three factors sometimes oppose to each other in the process of construction of public infrastructure such as roadbuilding and river improvement. It is crucial to avoid or resolute conflicts between the government and the local people through project management with the consensus building process. In public works in Japan, flood control has been given priority over the environmental preservation and (...) the landscape conservation due to the perception that it is through flood control that the life and property of individuals are adequately protected. As a consequence, the landscape and the environment have been paid only lip‐service. In the case of the Ohashi River Project in Izumo region presented in this paper, however, the river repair process might entail a severe blow to the tourism industry and have a dramatic impact on the fishery resources of the region, which would be considered a major loss in terms of the urban development of the city. One of our concerns is thus to avoid any losses, through proper consideration of the relationship between the three crucial factors. In this paper, the author reports some ideas and methods that appear in “Basic Policy for the Development of the Area around Ohashi River” composed by the Matsue Review Committee on the Development of the Area around the Ohashi River, in which the author is involved as a committee member. The most important task of the Committee wasto search for the ideas and methods to harmonize the values of flood control, environment, and landscape. (shrink)