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61.
Joseph Snir Carol Smith Lorraine Grosslight 《Journal of Science Education and Technology》1993,2(2):373-388
In this paper, we consider a way computer simulations can be used to address the problem of teaching for conceptual change and understanding. After identifying three levels of understanding of a natural phenomenon (concrete, conceptual, and metaconceptual) that need to be addressed in school science, and classifying computer model systems and simulations more generally in terms of the design choices facing the programmer, we argue that there are ways to design computer simulations that can make them more powerful than laboratory models. In particular, computer simulations that provide an explicit representation for a set of interrelated concepts allow students to perceive what cannot be directly observed in laboratory experiments: representations for the concepts and ideas used for interpreting the experiment. Further, by embedding the relevant physical laws directly into the program code, these simulations allow for genuine discoveries. We describe how we applied these ideas in developing a computer simulation for a particular set of purposes: to help students grasp the distinction between mass and density and to understand the phenomenon of flotation in terms of these concepts. Finally, we reflect on the kinds of activities such conceptually enhanced simulations allow that may be important in bringing about the desired conceptual change. 相似文献
62.
Lorraine T. Dorfman Karen A. Conner William Ward Jean B. Tompkins 《Research in higher education》1984,20(1):89-102
Dorfman et al. (1982) compared the professional activities of retired professors from liberal arts colleges, a comprehensive university, and a major research university. This companion piece based on the same survey compares the professors' reactions to retirement. Results show that a majority of faculty from all types of institutions plan for retirement, are positive about retirement, and give suggestions for institutional retirement policy. The retired professors recommend the following: (1) help in planning, (2) more information about retirement, (3) support for continued work, (4) gradual retirement. Major differences among institutions are the following: (1) comprehensive university faculty plan for retirement more than do faculty from the other institutions, (2) faculty from both universities begin financial planning at a younger age than do faculty from the liberal arts colleges, (3) research university faculty miss work and like having time to spend on professional activities more than do faculty from the other institutions. 相似文献
63.
64.
Discrimination and memory for video films of women performing different activities was investigated in 5.5 month-old infants. In Experiment 1, infants (N = 24) were familiarized to the faces of one of three women performing one of three repetitive activities (blowing bubbles, brushing hair, and brushing teeth). Overall, results indicated discrimination and memory for the actions but not the faces after both a 1-min and a 7-week delay. Memory was demonstrated by a visual preference for the novel actions after the 1-min delay and for the familiar actions after the 7-week delay, replicating prior findings that preferences shift as a function of retention time. Experiment 2 (N = 12) demonstrated discrimination and memory for the faces when infants were presented in static poses at the 1-min delay, but not the 7-week delay. In Experiment 3 (N = 18), discrimination of the actions was replicated, but no discrimination among the objects embedded in the actions (hairbrush, bubble wand, toothbrush) was found. These findings demonstrate the attentional salience of actions over faces in dynamic events to 5.5 month-olds. They highlight the disparity between results generated from moving versus static displays in infancy research and emphasize the importance of using dynamic events as a basis for generalizing about perception and memory for events in the real world. 相似文献
65.
Lorraine Busby 《期刊图书馆员》2013,64(1):32-38
It is trendy to be a supporter of Open Access publication with even journal publishers finding a role in communicating research results through this mechanism. When discussing Open Access it is rare for all parties to be clear about why Open Access is endorsed. The differences between Green Open Access and Gold Open Access can lead to unclear communication when the distinctions between the two are avoided. 相似文献
66.
Lorraine G. Johnson Robert A. Schwartz Beverly L. Bower 《Community College Journal of Research & Practice》2013,37(4):289-300
Stress management for adult women students in community colleges is essential because of the enormous demands they face from family, career, and financial responsibilities. Community colleges and adult educators must help adult women students identify their major sources of stress as well as provide strategies to alleviate those stressors. An extensive review of the literature and a campus-based study found high levels of stress resulting from parenting, nancial, and health concerns. Age was also found to be an important stress factor. Recommendations for helping adult women students are discussed. 相似文献
67.
This study investigated how tacit knowledge was used by expert and novice principals during problem-solving situations. Through the use of a phenomenological, qualitative approach, novice principals were compared with expert principals as both went about their daily tasks of school leadership. Results of the study contribute to the research on effective leadership and offer implications for leadership training models. Results suggest that experience may not be the most critical factor in expertise. 相似文献
68.
Lorraine T. Dorfman 《Educational gerontology》2013,39(11):1032-1045
Little is known about the impact of the end of mandatory retirement on professors over the long term. This follow-up study investigated the ten-year experience of professors who chose not to retire from a major research university after the elimination of the age 70 mandatory retirement in 1994. The initial interview study was conducted in 1998 (Dorfman, 2000, 2002). All surviving professors (n = 13; age 80–84) agreed to be reinterviewed in 2007. The study investigated major reasons for continuing to work or retire, professional and nonprofessional activities, perceptions of departmental and institutional atmosphere and student and faculty attitudes toward older faculty, and preparation and plans for retirement. Content analysis of the tape-recorded open-ended questions revealed that employed professors continued to work mainly because they enjoyed it. Retired professors retired mainly because of age or felt it was time to retire. Retired professors as well as their employed counterparts continued professional activities, primarily research. Both groups reported mixed reactions to the overall atmosphere in their departments and university as well as to student and faculty attitudes toward older faculty, with one-third of retirees reporting departmental or institutional pressures to retire. The major type of planning for retirement was financial. 相似文献
69.
Statistics indicated under achievement by 18-year-old Advanced (A) level History students in a mixed comprehensive school, by comparison with their results in the General Certificate of Secondary Education (GCSE) at 16. Further investigation highlighted a weakness in essay writing. A teaching strategy was developed to improve essay writing by (a) clarifying the purpose of essay writing; (b) enhancing essay structuring; (c) ensuring students obtained a firm understanding of the topics studied; and (d) providing students with appropriate study skills to enable them to work effectively. An action plan, which drew heavily on the ideas of phenomenography (Hounsell, 1984, 1987), was devised to tackle these areas. The results of students who were taught in this way and who took their examinations in 1998 showed a dramatic improvement over the three previous years. 相似文献
70.