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181.
The purpose of this study was to assess the effect of periodized resistance training on accelerative sprint performance. Sixteen physically active men participated in a randomized controlled study. An experimental group (n = 10) completed an 8-week periodized resistance training intervention, while a control group (n = 6) did not train. Pre- and post-training measures of 20-m straight-line sprint time, including a 10-m split, maximum strength, and explosive strength, were recorded. Flight time, stance time, stride length, and stride frequency were quantified from digitized video recordings of the first three strides of the 20-m sprint. Resistance training resulted in significant increases in maximum strength (parallel back squat: 19%) and explosive strength (6–10%). However, both groups increased 0–10 m sprint times (experimental group = 6%; control group = 3%) while 10–20 m times were reduced (experimental group = 7%; control group = 4%), highlighting the mechanical differences between the distinct sprint phases. The change during the 0–10 m interval was accompanied by a reduction in stride frequency during the first three strides. Strength coaches should be aware that the potential benefits of increased muscular strength during short sprints are likely to be affected by mechanical specificity and that improvements in sprinting performance may not occur immediately after a period of resistance training.  相似文献   
182.
This article aims to provide a baseline for future studies on the provision and support for the use of digital or electronic information services (EIS) in further education. The analysis presented is based on a multi‐level model of access, which encompasses access to and availability of information and communication technology (ICT) resources, access to and availability of EIS resources, and the third leg of staff skills and their development. The research was conducted within the third cycle of the JISC (Joint Information Services Committee) User Behaviour Monitoring and Evaluation Framework, in 2001/2002. Evidence was gathered from library and information service web sites and various stakeholders, including library and information service staff, academic staff and students to generate insights into the provision of access to EIS in further education. Sector‐wide funding initiatives have had a significant impact on ICT infrastructures, and these attract a positive response from students. EIS are represented on some library web sites but both web site development and EIS availability is very much less advanced than in higher education. Staff, however, lack sufficient dedicated access to ICT to be able to develop their own skills and use. There remains a low level of access to electronic information resources, with only limited access to these resources through library web sites. LIS managers face a number of challenges in enhancing this provision, including licensing arrangements, tight budgets that need to be spread across many discipline areas, and the absence of EIS designed specifically for the further education student. The other key challenge lies in the provision of time and opportunity for academic and LIS staff to develop their ICT and EIS skills, and, more generally in the further development of the role of Information and Learning Technology (ILT) Champions.  相似文献   
183.
Three experiments tested the hypotheses that (1) the onsets of prolonged, fixed-duration treatment shocks (shock treatment, or ST) serve as cues for fear conditioning to the ongoing painful effects of these stimuli, and (2) this acquired fear transfers to and influences shock-motivated test performances in predictable ways. Experiments 1 and 2 involved spaced post-ST presentations of very brief shocks (a presumed analogue of the onsets of treatment shocks) as a means of extinguishing the fear putatively associated with shock cues. This procedure reduced defecation by ST subjects over blocks of extinction sessions and nullified the punishment intensification effect that was otherwise shown to be a consequence of ST. As a further test of the shock-cue hypothesis, Experiment 3 involved relatively massed presentations of these brief shocks prior to ST in a latent-inhibition procedure (Lubow, 1973). This briefshock regimen also nullified the ST punishment intensification effect but did not impair the transituational transfer of contextual fear. In contrast, the group that was given the same brief shock regimen following ST showed enhancement of the punishment effect. With respect to current theoretical accounts of ST effects, these data were most consistent with notions that rely on an acquired-fear construct.  相似文献   
184.
185.
The existing literature on school libraries has been dominated by a view of them as ‘learning laboratories’ which should allow students opportunities for reading and conducting research into small scale projects. From this perspective, resource issues and helping students become knowledgeable users of library facilities are the major problems facing school librarians. This study breaks from the traditional research by focusing on the social use of the school library. Data are used from two case‐studies of school libraries to analyse student colonisation and teacher regulation of library space, and the processes by which students come to associate or dissociate themselves from using the library during the school day. The paper concludes by arguing that social factors form, an integral part of the context in which school libraries stand or fall as arenas which facilitate student learning, and that the spatial dimensions of social interaction should become central to analyses of educational differentiation.  相似文献   
186.
Global citizenship (GC) is becoming increasingly significant as a desirable graduate attribute in the context of increasing globalisation and cultural diversity. However, both the means and ends of GC education are influenced by a divergent range of conceptualizations. The aim of this research project was to investigate preservice teachers’ understandings of global citizenship, with a particular focus on cultural diversity. Pre-service teachers (PSTs) participated in interviews, and findings indicated that they were uncertain about the idea of global citizenship, sought harmony and a desire for sameness in culturally diverse relationships, and held ethnocentric, paternalistic and salvationist views about the ‘Other’. Drawing on these findings, we present a framework incorporating technicist, humanistic and postcritical conceptions as a tool for analysis of GCE approaches, their means and ends.  相似文献   
187.
ABSTRACT

Restorative justice (RJ) is an alternative approach to school discipline that has been gaining recognition in the public and academic spheres as a way to engage students who misbehave in school. RJ has promise to address racial/ethnic, gender, and disability disproportionality in school discipline. One aspect of school-based RJ that has received almost no attention in the literature is the professional development and ongoing support of teachers in schools using RJ. This article provides a review of extant literature on school-based RJ, teacher training, and consultation methods. Integrating the empirical literature on school consultation and teacher professional development, we argue that schools should implement a multitiered model of professional development to build teacher competency in RJ, specifically including the use of targeted teacher consultation. The proposed model is complementary to an RJ framework, systematic, and capable of evaluation; future research is needed to evaluate its effectiveness in practice.  相似文献   
188.
Rankings of liking for nine curriculum subjects were obtained from 93 middle school pupils aged 11‐13 years, who also completed the Children's Sex Role Inventory. Statistically significant gender differences in the rankings of English and humanities were found, which were both preferred by girls, and for physical education (PE) and science, which were preferred by boys. Some statistically significant associations between subject rankings and sex typing measures also emerged. Higher rankings of music and humanities were associated with higher Femininity scores, while higher rankings for PE were associated with lower Femininity scores. The only significant association with Masculinity was for English, where higher rankings were associated with lower Masculinity. No significant associations with Masculinity or Femininity were found for science, a traditionally male‐stereotyped curriculum area. Associations found between the rankings of the different subjects indicated a tendency for pupils to prefer either more academic or more practical subjects, but there was no indication from the limited data available on their performance that this could be related to their academic ability. The implications of these preliminary findings for future investigations are discussed.  相似文献   
189.
Brigham Young University's Center for Instructional Design (CID) creates online courses and multimedia instructional applications for university faculty. This paper asserts that including usability testing as a part of evaluation improves the quality and effectiveness of computer‐mediated instruction. The paper describes the fundamental purpose and functions of usability testing, and also distinguishes between different forms of evaluation: accessibility, quality assurance (QA), usability and implementation. Through a detailed case study, we describe how usability testing improved the quality of a computer‐based chemistry course and facilitated a clearer analysis of the learning effectiveness of this course.  相似文献   
190.
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