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171.
Cognitive abilities of Kenyan children in relation to nutrition, family characteristics, and education 总被引:2,自引:0,他引:2
The purpose of this study was to determine whether nutritional factors, family characteristics, and the duration of schooling were associated with cognitive and attentional capacities in children growing up in rural Kenya. Food intake was measured by direct observation and weighment twice monthly over the course of a year. Families were characterized in terms of socioeconomic status and the literacy of the parents. Children who were better nourished had higher composite scores on a test of verbal comprehension and the Raven's matrices. Better-nourished females were more attentive during classroom observations than malnourished female schoolchildren. Family characteristics and duration of school participation were associated with cognitive abilities for both boys and girls. For the children considered as a group, cognitive scores were best predicted by a combination of factors including duration of schooling, food intake, physical stature, and SES. 相似文献
172.
GEBBEKEN Norbert 《天津大学学报(英文版)》2006,12(Z1)
The identification of the critical infrastructure has shown that the build civil engineering infrastructure is almost involved everywhere, even with the IT-infrastructure. Therefore, the passive safety of structures is demanded. Security associations have analysed that most assaults came along with explosion and impact scenarios, which amount in 80% of assaults. Consequently, these are the extraordinary loads the structures have to be planned and designed for. To carry out such an engineering job, the engineer has to be educated in multiple disciplines as physics, material science , continuum mechanics, numerical mechanics, testing, structural engineering and related specific fields as wave propagation etc. In this paper we will concentrate on the subjects of numerical simulation and testing. 相似文献
173.
Ruth Neumann 《高等教育研究与发展》2002,21(2):167-178
This paper argues the importance of diversity for research and doctoral education and the key role of policy in encouraging it. It considers the impact of higher education policy on diversity in doctoral education through the three prevailing themes of cost, concentration and relevance, illustrating in each instance both positive and negative influences. It is a time of dynamic change where the role and purposes of doctoral study and the role and production of knowledge in society are changing. Policy plays an important part in leading and shaping this development. 相似文献
174.
Todd M. Loughead Katrien Fransen Stef Van Puyenbroeck Matt D. Hoffmann Bert De Cuyper Norbert Vanbeselaere 《Journal of sports sciences》2016,34(21):2063-2073
Two studies investigated the structure of different athlete leadership networks and its relationship to cohesion using social network analysis. In Study 1, we examined the relationship between a general leadership quality network and task and social cohesion as measured by the Group Environment Questionnaire (GEQ). In Study 2, we investigated the leadership networks for four different athlete leadership roles (task, motivational, social and external) and their association with task and social cohesion networks. In Study 1, the results demonstrated that the general leadership quality network was positively related to task and social cohesion. The results from Study 2 indicated positive correlations between the four leadership networks and task and social cohesion networks. Further, the motivational leadership network emerged as the strongest predictor of the task cohesion network, while the social leadership network was the strongest predictor of the social cohesion network. The results complement a growing body of research indicating that athlete leadership has a positive association with cohesion. 相似文献
175.
Standards of research publication: Differences between the physical sciences and the social sciences
Dr. Yoram Neumann 《Research in higher education》1977,7(4):355-367
This study examines differences in standards of research publications between the physical sciences and the social sciences. The results of the first two hypotheses tested indicate that the predominant form of publication in the physical sciences are articles, whereas books predominate in the social sciences. Furthermore, differences were found in the relevant dimension of publication between faculties in more prestigious departments and faculties in less prestigious departments. The policy implications of these findings to university administration are discussed. 相似文献
176.
Working memory capacity and reading skill moderate the effectiveness of strategy training in learning from hypertext 总被引:2,自引:0,他引:2
Johannes Naumann Tobias Richter Ursula Christmann Norbert Groeben 《Learning and individual differences》2008,18(2):197-213
Cognitive and metacognitive strategies are particularly important for learning with hypertext. The effectiveness of strategy training, however, depends on available working memory resources. Thus, especially learners high on working memory capacity can profit from strategy training, while learners low on working memory capacity might easily be overtaxed. In addition, efficient basic reading comprehension processes are important for strategy training to be successful: When both the newly acquired strategies and poorly routinized basic reading comprehension processes compete for working memory resources, navigation within the hypertext and learning might deteriorate rather than improve. In an experiment, 64 undergraduates learned with a comprehensive expository hypertext after receiving either a cognitive or a metacognitive or no strategy training. In line with the predictions, learners high on working memory capacity or reading skill could profit from learning strategy training in terms of learning outcomes and the quality of their navigational behavior. Learners low on working memory capacity or reading skill, in contrast, performed worse in both training conditions compared to the control condition. The improvement in learning outcomes for skilled learners as well as the impairment in learning outcomes for unskilled learners could be shown to be indirect effects mediated by the quality of navigational behavior. 相似文献
177.
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179.
David Fortus Marcus Kubsch Tom Bielik Joseph Krajcik Yaron Lehavi Knut Neumann Jeffrey Nordine Sebastian Opitz Israel Touitou 《科学教学研究杂志》2019,56(10):1341-1361
Energy is a central concept in science in every discipline and also an essential player in many of the issues facing people everywhere on the globe. However, studies have shown that by the end of K-12 schooling, most students do not reach the level of understanding required to be able to use energy to make sense of a wide range of phenomena. Many researchers have questioned whether the conceptual foundations of traditional approaches to energy instruction may be responsible for students' difficulties. In response to these concerns, we developed and tested a novel approach to middle school physical science energy instruction that was informed by the recommendations of the Framework for K-12 Science Education (National Research Council, 2012a) and the Next Generation Science Standards (NGSS) (NGSS Lead States, 2013). This new approach differs substantially from more traditional approaches to energy instruction in that it does not require energy forms and it emphasizes connections between energy, systems, and fields that mediate interaction-at-a-distance. We investigated student learning during this novel approach and contrasted it with student learning within a comparable unit based on a more traditional approach to energy instruction. Our findings indicate that students who learned in the new approach outperformed students who learned in the traditional approach in every quantitative and qualitative aspect considered in this study, irrespective of their prior knowledge of energy. They developed more parsimonious knowledge networks in relation to energy that focused primarily around the concept of energy transfer. This study warrants further investigation into the value of this new approach to energy instruction in both middle and high school. 相似文献
180.
In discussions about the use of public money for popular sports such as clubs in Germany’s 1. Bundesliga, it is often argued that the funds are well invested due to the cash flows generated by these organizations for their home regions. However, others claim the opposite. They argue that actually no positive impact is generated and, even worse, that money is leaving the region due to the clubs. The study presented here analyses the financial flows generated by the 1. FC Kaiserslautern for its home city (Kaiserslautern) and home state (Rhineland-Palatinate) during the 2010/11 season when the club participated in the 1. Bundesliga. Based on a 3-step model, the economic impact is calculated by considering spectator spending and cash flows generated by the business activities of the club. It turns out that additional cash flows of approximately €16.5 million and €25.8 million were generated for the state and the city, respectively. 相似文献