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41.
A great deal of research has been done regarding science in-service education and the conclusion can be drawn that positive results were generally achieved in workshop-participant attitude and implementation of instructional approaches into the classroom. One of the most important effects of an in-service workshop is upon the students of the teachers participating in an in-service program, but rarely, if ever, is this parameter assessed in the in-service evaluation design. This study investigated the relationships among (1) teacher's attitudes and implementation of in-service workshop developed science materials (learning cycles) and (2) elementary school student's conservation reasoning and language used to describe properties of objects. Data were gathered from over 100 students from grades K-5 and 16 teachers who had participated in an in-service program. A representative comparison group of students and teachers was selected which generally matched the teachers participating in the in-service workshop except for one variable–-the comparison group taught science traditionally, that is, by exposition. Data from the research indicated that the teachers involved in the science in-service workshop implemented the workshop-developed learning cycles into their science classes. Significantly greater gains in conservation reasoning and language usage occurred with the students of the teachers participating in the science in-service workshop as compared to students in the exposition classrooms.  相似文献   
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The question of the role of higher education in society and culture today is linked, in this article, with two parallel processes: the questioning of the nation-state in the global age and the gradual decomposition of the welfare state in the majority of the OECD countries. What is currently happening is, first, a major redefinition of the general responsibilities of the state vis-a ¤ -vis the familiar type of society characterized by the welfare state and, second, a major revision in thinking about the role of the state in contemporary politics and economies brought about by globalization processes (and hence the possible demise of the nation-state). The modern German-inspired university in the form in which it exists in Europe is certainly affected by the two processes. The aim of this article is to discuss higher education in this particular context.  相似文献   
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Research in Higher Education - This study illustrates how respondents’ stated choices (the discrete choice experiment method) combined with the random utility framework can be used to model...  相似文献   
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Almost all teenage magazines invite readers to submit questions concerning relationships, published as letters to the editor, popularly called ‘advice columns’, often containing explicit questions about sexuality. This study aims to examine, firstly, how themes related to sexual initiation are presented in letters to the editor published in Polish magazines and, secondly, how these themes are reflective of Poland's socio-cultural climate. These aims are achieved through thematic data analysis and by presenting an in-depth history of teenage magazines in Poland. In order of prevalence, the presented themes include entering into a general dialogue focused on sexual activity, eliminating the long-term (e.g. unplanned pregnancy) and short-term (e.g. rejection by one's partner) consequences of sexual activity, establishing ideal circumstances for sexual initiation, and, as a transition stage, meeting needs relevant only to those who have already initiated sexual activity. Although by no means exclusive, these findings offer some insight into adolescent sexual initiation, reflective of Poland's socio-cultural climate, where adolescent sexuality remains a taboo topic and teenage magazines may be viewed by certain groups of adolescents as a resource for supplementing existing sexual education.  相似文献   
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Are you in h?     
A new method of assessment of scientific papers, scientists, and scientific institutions was defined. The significance of a paper was assessed by the definition of the largest (the most prestigious) set, including that paper in its h-core. The sets of papers were defined by affiliation (country, city, university, department) or by subject (branches and sub-branches of science, journal). The inclusion of a paper in the h-core of certain set(s) was used as an indicator of the significance of that paper, and of the scientific output of its author(s), of their scientific institution(s), etc. An analogous procedure was used to assess the contribution of an individual to the scientific output of his/her scientific institution, branch of science, etc.  相似文献   
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Abstract

The aims of this study were to examine the acute effects of static stretching on peak torque, work, the joint angle at peak torque, acceleration time, isokinetic range of motion, mechanomyographic amplitude, and electromyographic amplitude of the rectus femoris during maximal concentric isokinetic leg extensions at 1.04 and 5.23 rad · s?1 in men and women. Ten women (mean ± s: age 23.0 ± 2.9 years, stature 1.61 ± 0.12 m, mass 63.3 ± 9.9 kg) and eight men (age 21.4 ± 3.0 years, stature 1.83 ± 0.11 m, mass 83.1 ± 15.2 kg) performed maximal voluntary concentric isokinetic leg extensions at 1.04 and 5.23 rad · s?1. Following the initial isokinetic tests, the dominant leg extensors were stretched using four static stretching exercises. After the stretching, the isokinetic tests were repeated. Peak torque, acceleration time, and electromyographic amplitude decreased (P≤ 0.05) from pre- to post-stretching at 1.04 and 5.23 rad · s?1; there were no changes (P > 0.05) in work, joint angle at peak torque, isokinetic range of motion, or mechanomyographic amplitude. These findings indicate no stretching-related changes in the area under the angle – torque curve (work), but a significant decrease in peak torque, which suggests that static stretching may cause a “flattening” of the angle – torque curve that reduces peak strength but allows for greater force production at other joint angles. These findings, in conjunction with the increased limb acceleration rates (decreased acceleration time) observed in the present study, provide tentative support for the hypothesis that static stretching alters the angle – torque relationship and/or sarcomere shortening velocity.  相似文献   
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