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11.
Solving Bernstein's Problem: A Proposal for the Development of Coordinated Movement by Selection 总被引:6,自引:0,他引:6
In recent years, many established concepts in the theory of human motor development have undergone profound change, and our knowledge has increased greatly. Nevertheless, some outstanding problems remain unsolved. A central problem concerns the redundancy of effective movements, first pointed out by N. A. Bernstein. The human motor system is mechanically complex and can make use of large number of degrees of freedom. The controlled operation of such a system requires a reduction of mechanical redundancy, effectively by reducing the number of degrees of freedom. More recent work has shown that this problem is hard to solve explicitly by computing solutions to the equations of motion of the system. Equally challenging to traditional computational approaches is the fact the motor systems show remarkable adaptability and flexibility in the presence of changing biomechanical properties of motor organs during development and when faced with different environmental conditions or tasks. Solutions to these problems would have a large impact on a variety of issues in child development. In this article, we stress the importance of the somatic selection of neuronal groups in maps for the progressive transformation of a primary movement repertoire into a set of motor synergies and adaptive action patterns. We present results from computer simulations of a simple motor system that works according to such selectional principles. This approach suggests a provisional solution to Bernstein's problem and provides new parameters to guide experimental approaches to the development of sensorimotor coordination. 相似文献
12.
Ozcan Karaaslan Ibrahim Diken Gerald Mahoney 《International Journal of Disability, Development & Education》2011,58(4):359-372
The case study was conducted to examine the feasibility of an early intervention curriculum called Responsive Teaching with two five-year-old children from Turkey who had significant developmental delays. This study determined whether Turkish mothers might be successful in learning to become more responsive to their children, and whether this would result in significant improvements in their children’s development. Both dyads received 28 individual parent–child intervention sessions which were conducted over a four-month period of time. Pre-, mid-, and post-assessments indicated improvements in the mothers’ responsiveness to their children and the children’s levels of engagement with their parents. There were also improvements in the children’s language and personal social development. Mothers reported that Responsive Teaching helped them learn to interact more effectively with their children and that this resulted in longer and more enjoyable interactions with them. Results from this investigation are discussed in terms of their implications for providing developmental services to preschool-aged children with disabilities in Turkey. 相似文献
13.
Gerald W. McLaughlin John C. Smart James R. Montgomery 《Research in higher education》1978,8(1):67-82
A linear causal model is postulated and path analysis procedures are used to examine the direct, indirect, and total influence of 39 variables (grouped into eight general measures) on the salaries of 24.461 faculty members associated with virtually every discipline and type of postsecondary institution in the academic community. The results show wide variation in the relative influence of characteristics of postsecondary institutions and the personal and professional characteristics of faculty members on faculty salaries. The implications of these findings are discussed and specific guidelines are provided to assist those interested in examining the external and internal consistency of the faculty salary structures of their respective institutions. 相似文献
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Research in Higher Education - Do persons over age 62 enroll in universities to maintain their social interaction and stay in life's mainstream? This question was researched through a... 相似文献
16.
Gerald Collier 《高等教育研究与发展》1989,8(1):59-68
Radical changes have taken place in the conditions of professional practice in recent decades, which have been recorded and analysed by a number of authors, together with various proposals for the adaptation of courses of professional training. One area in this evolution which has received less than systematic investigation is the greatly increased occurrence of clashes arising from ethical complications in much professional practice, a major source of which has been the greatly increased intermingling of cultures worldwide. In the present paper it is argued that the training of professional practitioners in the understanding of value conflicts is different in nature from the training in the knowledge and techniques specific to a profession. The distinction is traced and a definition offered of the educational problem involved in preparing professional practitioners for handling such matters. The remainder of the paper is taken up with a review of several approaches that have been reported. 相似文献
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Gerald J. Savage 《Technical Communication Quarterly》1996,5(3):309-327
As we increasingly recognize the social nature of technical communication, our responsibilities as teachers need to be redefined. Three levels of responsibility are suggested: at the theoretical level, we should study technical communication as a historically emergent social practice; at the pedagogical level, we need to incorporate social and historical perspectives into technical communication courses and curricula; at the level of social action, we should participate in defining and creating new sites of practice for technical communicators. Several suggestions are offered for helping students locate or develop alternative sites of technical communication practice. 相似文献
19.
Berent GP Kelly RR Aldersley S Schmitz KL Khalsa BK Panara J Keenan S 《Journal of deaf studies and deaf education》2007,12(1):8-24
Focus-on-form English teaching methods are designed to facilitate second-language learners' noticing of target language input, where "noticing" is an acquisitional prerequisite for the comprehension, processing, and eventual integration of new grammatical knowledge. While primarily designed for teaching hearing second-language learners, many focus-on-form methods lend themselves to visual presentation. This article reports the results of classroom research on the visually based implementation of focus-on-form methods with deaf college students learning English. Two of 3 groups of deaf students received focus-on-form instruction during a 10-week remedial grammar course; a third control group received grammatical instruction that did not involve focus-on-form methods. The 2 experimental groups exhibited significantly greater improvement in English grammatical knowledge relative to the control group. These results validate the efficacy of visually based focus-on-form English instruction for deaf students of English and set the stage for the continual search for innovative and effective English teaching methodologies. 相似文献
20.
Primary physical education subject leadership: along the road from in-house solutions to outsourcing
The modern primary school is a complex institution containing a growing community of individuals and organisations with potentially competing agendas. Within this environment, subject leaders are typically looked upon for advice and guidance within a given subject area such as Physical Education. Yet for those endeavouring to provide Physical Education subject leadership within primary schools, the challenge has grown significantly over the last two decades amidst an ever-changing policy landscape. This paper is for and about primary Physical Education subject leadership; the purpose of which, to plot primary Physical Education's policy journey and explore the implications of reform in shaping the subject leader's role. The paper addresses the current lack of guidance for the subject leader and examines the professional knowledge, skills and experience required to do the role effectively. 相似文献