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Since 1983, the Spencer S. Eccles Health Sciences Library has presented InfoFair, an annual event featuring presentations, exhibits, demonstrations, and workshops on computer and information topics of interest to health professionals and health information providers at the University of Utah Health Sciences Center and throughout Utah. The first InfoFair was held in response to an increasing number of inquiries from library users on how to search MEDLINE from their home or office computers. The focus of InfoFair has expanded and changed over the past nineteen years to reflect changes in library users' computer and information needs, concerns, and interests. While themes and programs have changed, a definite set of trends, guidelines, and procedures have developed based on the experience gained each year. The purpose of this paper is to review and evaluate the changes in InfoFair from 1983 to 2001 and to present information for use by other libraries for planning and presenting similar events.  相似文献   
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This essay employs Barbara Herrnstein Smith's notion of “contingencies of value,” the idea that evaluations of text vary because our readings take place in specific contexts and are shaped by cultural and historical exigencies. In this study, we apply this notion to the reading of student texts in a college composition portfolio assessment. Through an analysis of taped teacher discussions of students' writing and an examination of student responses to the grading process, we conclude that in every reading of a text (but especially in the reading of the multiple texts of a portfolio) readers posit an “implied author.” That is, based on their reading of a single text or portfolio, teacher-readers construct a persona that represents the author, and this projection can strongly influence the reader's evaluation of student work. Group discussions of portfolios allow teachers to expose and explore the value-laden nature of these judgments.  相似文献   
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A large sample of entertainment television programs that were aired on 28 channels in China in 2004 was analyzed for romantic and sexual content. Romantic scenes, typically portraying men and women already in committed relationships, appeared in 80% of the 196 programs analyzed. The analysis suggested that, according to Chinese television in the early part of the twenty-first century, emotional love was more important than physical sexual interaction in romantic relationships. More than half of the 1112 romantic scenes analyzed depicted love between the partners without any discussion or display of physical sexual behavior. Only 8% of scenes included discussion or depiction of sexual behavior (e.g., touching, kissing, and intercourse) without some sense that the partners were in a loving, committed relationship. Sexual intercourse was implied or depicted in fewer than 2% of the romantic scenes. Findings are discussed in light of the Chinese government's periodic regulation of sexually suggestive media content and attempts to filter Internet content. The extent to which such content may affect young viewers' perceptions of romantic relationships and sexual behavior is also discussed.  相似文献   
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A growing area of interest in chemical education has been the research associated with conceptual understanding at the particulate level. This study investigated the views of 10 university chemistry lecturers, 85 pre-service chemistry teachers and 23 Secondary 3 (equivalent to Year 9) chemistry students about the particulate level of a chemical reaction, namely the heating of copper (II) carbonate. Four characteristic views were identified on the basis of their diagrammatic representations of particles. These were: (a) formation of intermediates; (b) formation of free particles (e. g., atoms or ions); (c) combination of a and b: formation of free particles (e. g., atoms or ions) first, and then intermediates; (d) no mechanism. Both the majority of the lecturers and the pre-service teachers held an identical view about the reaction mechanism, namely that the decomposition of copper (II) carbonate goes through a transition stage by forming intermediates. In contrast, even though the students were familiar with this reaction, about half of them naïvely believed that copper (II) carbonate broke up on heating and the particles recombined directly to form copper (II) oxide and carbon dioxide, the two observed products. About one-third of the students had neither any notion of how the atoms in the copper (II) carbonate lattice interacted and were rearranged in the reaction nor any concept of bond-breaking and reformation in a chemical reaction.  相似文献   
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It has previously been shown that females incur less muscle damage than males after strenuous exercise, but limited data are available for humans. To determine possible differences between the sexes in humans, the response to high-force eccentric exercise was examined in a large sample of women (n = 83) and men (n = 82). The participants performed a bout of eccentric exercise of the elbow flexors consisting of 70 maximal repetitions. Isometric strength, resting elbow angle and muscle soreness were measured before, immediately after (except soreness) and then daily for 7 days after exercise. There was a significant loss in strength among both groups (69% for women and 63% for men) (P?0.01) immediately after exercise; at 168 h post-exercise, women still had a 27% strength loss and men had a 24% strength loss. No significant difference in strength loss or recovery rate was found between men and women. Soreness reached peak values 32-48 h post-exercise (P?0.01), with no significant difference between men and women. Range of motion decreased significantly until 3 days after exercise (14.6° or 0.255 rad loss for women; 12.2° or 0.213 rad loss for men) (P?0.01); at 168 h post-exercise, the women and men still showed a loss of 4.8° (0.084 rad) and 4.0° (0.07 rad), respectively. There was a significant interaction of sex x time (P?0.01); a post-hoc test indicated that the women experienced a greater loss in range of motion at 72 h than men and this difference was maintained to 168 h post-exercise (P?0.01). Thus, our results do not support the contention that women have a lower response to eccentric exercise than men.  相似文献   
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