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41.
Research has shown that differences in the prior knowledge of the participants and in the learning indexes adopted can explain why some studies show positive learning effects of analogy enriched text while others do not. In the present studies, these two factors were combined into one through the construction of a learning index that measured incremental positive changes in the participants' prior knowledge after reading an analogy enriched or no analogy text. A second learning index was also used to evaluate whether the participants created well-formed conceptual models after reading the science text. These learning indexes were used in two studies in which the effects of analogy enriched versus no analogy text were compared on the learning of the scientific explanations of the day/night cycle and of the seasons. The participants were 3rd and 5th graders in the first study and 6th graders and college students in the other. Although only few of the participants learned the correct scientific explanation, those who read the analogy enriched text produced more incremental positive changes in their pretest explanations at posttest and delayed test and created more well-formed conceptual models close to the scientific one than those who read the no analogy text. They also recalled more information and created fewer invalid inferences in their recalls. The results indicate that analogies can be used without reservation to facilitate the learning of science and have broader implications about how to evaluate the learning of science in general. 相似文献
42.
The chapters included in this special issue are innovative in their attempt to bring together research on persuasion with research on conceptual change. Although persuasion and conceptual change are not similar in all respects, they both involve belief change. They also both require that we better understand the variables that make a text persuasive and thus influence the reader to change his/her beliefs. These chapters are instrumental in bringing about three important characteristics of persuasive text that can also be useful in inviting conceptual change. These characteristics are the comprehensibility, clarity and credibility of the text; the importance of explicitly addressing the readers’ prior beliefs; and affective and motivational factors. 相似文献
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This study explores classification consistency and accuracy for mixed-format tests using real and simulated data. In particular, the current study compares six methods of estimating classification consistency and accuracy for seven mixed-format tests. The relative performance of the estimation methods is evaluated using simulated data. Study results from real data analysis showed that the procedures exhibited similar patterns across various exams, but some tended to produce lower estimates of classification consistency and accuracy than others. As data became more multidimensional, unidimensional and multidimensional item response theory (IRT) methods tended to produce different results, with the unidimensional approach yielding lower estimates than the multidimensional approach. Results from simulated data analysis demonstrated smaller estimation error for the multidimensional IRT methods than for the unidimensional IRT method. The unidimensional approach yielded larger error as tests became more multidimensional, whereas a reverse relationship was observed for the multidimensional IRT approach. Among the non-IRT approaches, the normal approximation and Livingston-Lewis methods performed well, whereas the compound multinomial method tended to produce relatively larger error. 相似文献
45.
Katharina Steinhart Andreas von Kaenel Stella Cerruti Pedro Chequer Rebeca Gomes Claudia Herlt 《Sex education》2013,13(6):630-643
In 2007, six countries (Argentina, Brazil, Chile, Paraguay, Peru and Uruguay) commenced work on a project to harmonise public policy on school sexuality education (SE) and the prevention of HIV. Inter-sectoral management committees for SE involving ministries of education, ministries of health and civil society were established, national policies and work plans were formulated and implemented, and SE/HIV prevention activities were carried out. The strengths and weaknesses of implementation were assessed. After this, the beginnings of a community of practice were created, with national focal points. This paper analyses the above process using qualitative data generated through semi-structured questionnaires and interviews, with a focus on the perceived contribution of regional collaboration to the development of national policies, national curricula and implementation. Overall, the initiative reached 83,000 teachers and 1,500,000 pupils. Training materials and national curricula and policies were developed, introduced and implemented. Regional collaboration improved political institutionalisation, information exchange, inter-sectoral collaboration, civil society participation, programme legitimacy and the perception of SE as a young person's right. The initiative offers a model for other countries, with regional collaboration helping to establish the case for SE both normatively and institutionally at the political level, mitigate obstacles in the context of such a politically sensitive topic as SE and provide a forum for discussion and the exchange of information which in turn helped legitimise and operationalise national SE policies. 相似文献
46.
David A. Carter Alison Alexander Stella Ting‐Toomey Gary T. Hunt Sue De Wine 《Journal of Applied Communication Research》2013,41(2):165-178
Ethics in Human Communication (2nd ed.). Edited by Richard L. Johannesen. Prospect Heights, IL: Waveland Press, 1983, pp. x + 244. $8.95. Ethics, Morality and the Media: Reflections on American Culture. Edited by Lee Thayer. New York: Hastings House, 1980, pp. xvi + 302. $21.50 (cloth) or $11.95 (paper). Ethical Perspectives and Critical Issues in Intercultural Communication. Edited by Nobleza C. Asuncion‐Landé. Falls Church, VA: Speech Communication Association, 1978, pp. x + 179. $7.00. Organization Development and Change (2nd ed.). By Edgar F. Huse. St. Paul: West Publishing, 1980, pp. xiv + 528. $22.50. Trends and Issues in OD: Current Theory and Practice. Edited by W. Warner Burke and Leonard D. Goodstein. San Diego: University Associates, 1980, pp. vii + 351. $18.50. Consultation. Edited by Thomas Backer and Edward Glaser. Los Angeles: Human Interaction Research Institute. Triannually. No charge. Group and Organization Studies. Edited by Marshall Sashkin. San Diego: University Associates. Quarterly. $28.00 (individuals) and $54.00 (institutions). Training and Development Journal. Edited by Patricia Galagen Hurley. Washington: American Society for Training and Development. Monthly. $40.00 (non‐members). 相似文献
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