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This paper investigates children's use of converging obliques in their drawings of objects. Adults and adolescents, as well as 7‐year‐old children, were not very successful in using converging obliques in their drawings of small‐scale objects; they tended to use parallel edges. When confronted with the apparent convergence of a real road receding into the distance adults and adolescents switched to using converging obliques; 7‐year‐olds still drew parallel roadsides. Children were induced to use converging obliques, however, when asked to copy from a line drawing of a road or from a photograph, particularly when the convergence of the road in the photograph was more dramatic. 相似文献
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5‐year‐olds, 7‐year‐olds and 9‐year‐olds were asked to draw three figures, one standing still and facing them, one standing still in profile and one running in profile. Half drew from imagination and half drew from models. The 5‐year‐olds made fewest distinctions in the way they drew the figures, the most notable being the greater spread of the legs of the running figure. With increasing age, more features were used to differentiate the three figures. There was little evidence of 5‐year‐olds adapting their figures in the presence of a model. Only among the older children was there a significant effect of the presence of a model when the 7‐year‐olds and, to a greater extent, the 9‐year‐olds drew their running figure with bent arms and legs and also with more transparencies and partial occlusions. 相似文献
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AbstractIn this article we use a hybrid methodology to better understand the skilful performance of sports teams as an exemplar of distributed cognition. We highlight key differences between a team of individual experts (an aggregate system) and an expert team (an emergent system), and outline the kinds of shared characteristics likely to be found in an expert team. We focus on the way that shared knowledge contributes to expert team performance. In particular, we suggest that certain kinds of shared knowledge (both embodied and declarative) and shared skill, potentially developed through a team’s history of playing and training together, facilitate successful coordination. These kinds of shared knowledge and skill may be less developed in a team of experts without a shared history. Exploring the expert performance of sports teams informs our understanding of distributed cognition and collaboration more generally and creates avenues for further philosophical and empirical investigation. 相似文献
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Organizational Surveys: A System for Employee Voice 总被引:1,自引:0,他引:1
Vickie Cox Edmondson 《Journal of Applied Communication Research》2013,41(4):307-310
Although surveys are often used to assess and track employee attitudes and opinions over time and are used quite frequently by applied communication researchers, the use of surveys as a channel to voice employee attitudes and opinions has not been fully explored in the employee voice or basic organizational communication literature. With the increased call for accountability, effective applied communication researchers can play an important role in ensuring that organizations engage in the survey process in a manner that is “safe” for employees, and ethical and practical for the organization. Because the question of how to accomplish this task is complex and cannot be fully addressed within the constraints of a commentary, I offer three general principles to guide future researchers in helping overcome organizational communication problems:
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Build trust in the organizational survey process, the researcher(s), and the organization.
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Eliminate the adversarial relationship that often exists between management and employees who speak up.
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Provide evidence that the organization does more than purport to value the things that it says it values.
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Readers' advisory databases are used by public librarians to assist patrons in finding books based on the facts of the plot, the factors used to describe the appeal of the book, or read titles similar to another book they have read. Librarians depend on these databases to give a complete view of the titles available given these limiters, and may assume that identical searches in each database would give similar results. This study compares search results from four databases to see the extent of crossover within those results, using fact-based searches, appeal factor searches, and read-alike searches. 相似文献
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Anita Stender Martin Schwichow Corinne Zimmerman Hendrik Härtig 《International Journal of Science Education》2013,35(15):1812-1831
ABSTRACTMany science curricula and standards emphasise that students should learn both scientific knowledge and the skills associated with the construction of this knowledge. One way to achieve this goal is to use inquiry-learning activities that embed the use of science process skills. We investigated the influence of scientific reasoning skills (i.e. conceptual and procedural knowledge of the control-of-variables strategy) on students’ conceptual learning gains in physics during an inquiry-learning activity. Eighth graders (n?=?189) answered research questions about variables that influence the force of electromagnets and the brightness of light bulbs by designing, running, and interpreting experiments. We measured knowledge of electricity and electromagnets, scientific reasoning skills, and cognitive skills (analogical reasoning and reading ability). Using structural equation modelling we found no direct effects of cognitive skills on students’ content knowledge learning gains; however, there were direct effects of scientific reasoning skills on content knowledge learning gains. Our results show that cognitive skills are not sufficient; students require specific scientific reasoning skills to learn science content from inquiry activities. Furthermore, our findings illustrate that what students learn during guided inquiry activities becomes visible when we examine both the skills used during inquiry learning and the process of knowledge construction. The implications of these findings for science teaching and research are discussed. 相似文献
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