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81.
Thought experiments (TEs) play a central role in physics. Wesuggest that erroneous TEs may be as important as correct TEs,and that both have a special role in an ongoing process ofconceptual refinement for physicists and for naive physicslearners. We analyze TEs related to stellar evolution andgeneral relativity made by Schwarzschild, Eddington, Landau,and Einstein. We identify the stages at which crucial errorsare done in these TEs, and the cognitive processes which leadto these errors. We argue that necessary conditions for asuccessful TE (i.e., a TE which leads to correct conclusions)are self-consistency and comprehensiveness of the relevantpicture of the world. We show that the TEs by expert physicistsand TEs by students are similar on a metacognitive level, butdifferent in details. Students' erroneous reasoning occur inall stages of a TE, whereas physicists usually make errors inthe first two stages of TEs. Then we bring evidence that Tesare more prone to errors than laboratory experiments. Next wediscuss the implications for naive physics learners, and makesuggestion for using TEs in physics education. 相似文献
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83.
The proliferation of new communication technologies over the last 2 decades has increased opportunities for audience activity by offering more choices and greater control aver the communication process for media consumers. However, extant research on the degree of user activity with new media portrays conflicting views of audience members as more active or more passive. This study attempts to sort out this issue by exploring audience activity levels among users of new and traditional media, as indicated by instrumental or ritualized orientations toward media use. Results indicate that new communication technologies are motivated by both instrumental and ritualized motives, but are used more instrumentally than traditional channels, particularly among older users. 相似文献
84.
Miriam Posner 《图书馆管理杂志》2013,53(1):43-52
ABSTRACT While much work on libraries and digital humanities has focused on how to train and encourage individual librarians, we have not paid enough attention to the administrative and institutional factors required to help these professionals succeed. This article outlines some common sources of frustration for library professionals engaged in digital humanities work and offers sketches of some library-based digital humanities programs that are working to address these challenges. 相似文献
85.
Bridget A. Franks David J. Therriault Miriam I. Buhr Evelyn S. Chiang Claire M. Gonzalez Heekyung K. Kwon Jenni L. Schelble Xuesong Wang 《Metacognition and Learning》2013,8(2):145-171
This study explored the abilities of 5th, 8th, and 10th graders, and College students to reason logically about what they read. Both students’ metacognitive behavior (looking back at previously read text) and their performance on logical deduction questions were recorded and analyzed in a reading task. Conditional logic premises and deductive questions were embedded in three narratives containing premise information that was factual (True Story), contrary to fact (False Story), or unverifiable via common world knowledge (Neutral Story). The texts and questions were presented one sentence at a time on a computer screen; participants controlled the presentation of sentences. For answering the questions, three response tasks were devised. One task (labeled Generate) required readers to generate their own logical conclusions in response to deduction questions. Two tasks (labeled Valid and Invalid) required readers to evaluate logically valid or logically invalid conclusions drawn by story characters in the texts. Students in early and late adolescence looked back more when asked to evaluate logical conclusions than when asked to generate conclusions on their own; College students’ lookback frequencies were not significantly affected by response task, but were greater overall than those of younger students. With conditional forms requiring an uncertainty response (Affirmed Consequent and Denied Antecedent), readers looked back more when evaluating logically invalid conclusions than when evaluating logically valid ones. Readers of all ages were more likely to agree with story characters’ (valid) uncertain conclusions with the AC and DA forms than they were to disagree with story characters’ (invalid) certain conclusions to these forms. Both lookback frequency and performance on logic questions were lowest when readers were required to reason from contrary to fact premises. 相似文献
86.
87.
Miriam Heller Stern 《Journal of Jewish Education》2013,79(2):141-142
This article examines 10 textbooks used in Jewish religion classes in Russian high schools in the final decades of the 19th century. The textbooks reveal an expectation of a low level of Hebrew background, an interest in promoting the practice of prayer, and two distinct approaches to teaching Judaism. While some of the books introduce students to their religion through Biblical or later Jewish history, others present the religion as a systematic set of beliefs and practices. Although it is difficult to ascertain exactly how the books were utilized in classrooms, they certainly provide a sense of the priorities of a group of educators, as well as of the relative freedom they had in defining Judaism for the next generation. 相似文献
88.
Miriam Reiner MA Christina Niermann Fabian Krapf Alexander Woll 《Sportwissenschaft》2013,43(4):264-275
Sport and physical activity are attributed with a positive influence on stress induced complaints due to their overall positive effect on health. The buffering effect on stress has not yet been clearly shown and the findings are inhomogeneous. The following article examines the buffering effect of sport and physical activity on different types of psychological and physical complaints. Therefore, a study was conducted questioning 453 people (M?=?53.56 years; SD?=?11.31) about chronic stress (Perceived Stress Scale), physical complaints (Gießener Beschwerdebogen) and their subjective physical activities (Energy consumption through physical activity – e.g. Soccer or Jogging) and energy consumption – daily bike and walking activity). A buffering effect on nearly all types of complaints could be shown through physical activity, but not through lifestyle activities. Physical activity acts complaint reducing on people suffering from increased stress. A more differentiated examination of the physical activity behaviour, the stress perception and the type of complaints might contribute to clearer findings. 相似文献
89.
Miriam Alfassi 《欧洲特需教育杂志》2013,28(2):255-266
This short report identifies the academic and environmental experiences that support the reclaiming of students at high academic risk and describes an applicable school‐wide programme emanating from the call for educational change in Israel. The proposed structured academic programme demonstrates how schools can achieve broad student knowledge and set high performance standards while accommodating diverse student needs. As such, the programme provides school practitioners with intervention targets that promote school engagement and higher school performance. In addition, the report provides illustrative examples of the implemented programme within schools for students at high academic risk in Israel. It is argued that a movement towards an adaptive model of schooling as portrayed within the structured academic programme may prove to be effective in academically engaging students at academic risk, thus providing all students with democratic possibilities for learning and knowing. 相似文献
90.
The purpose of this study was to investigate the effects of strategy instruction on the reading literacy of students with mild and moderate intellectual disability. Students aged 15–21 with intellectual disability (n=35) participated in 24 sessions of literacy strategy instruction (experimental condition) or remedial literacy‐skill acquisition‐ lessons (control condition). The main objective of strategy instruction was to foster comprehension monitoring. Through shared dialogues, students were trained to generate questions about text, to summarise what was read, to clarify difficult words and to make predictions. The strategies were taught using the reciprocal teaching method developed by Palincsar and Brown. This method involves provision of support adjusted to students’ difficulties and peer teaching of strategies. Control subjects were exposed to direct instruction of basic reading skills that were presented sequentially and practiced solitarily by the students. Opportunities were given to respond to questions and to summarise but no strategy instruction was provided to foster comprehension monitoring. Two different measures of comprehension and a measure of strategy use were administered to test for variation across different methods of instruction. Findings on all measures provide support for the claim that strategy instruction is indeed superior to traditional remedial methods of skill acquisition in fostering reading literacy comprehension. These findings challenge the common perception that literacy is an organic impossibility for people defined as intellectually disabled. Moreover, the results add to recent research in sociocognitive instruction that supports the need to modify prevailing methods of reading curriculum and suggests a reconceptualisation of the comprehension process and its instruction to students with intellectual disabilities. 相似文献