首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   30587篇
  免费   482篇
  国内免费   1276篇
教育   16525篇
科学研究   5653篇
各国文化   265篇
体育   1230篇
综合类   1188篇
文化理论   40篇
信息传播   7444篇
  2024年   4篇
  2023年   162篇
  2022年   371篇
  2021年   557篇
  2020年   686篇
  2019年   588篇
  2018年   512篇
  2017年   524篇
  2016年   465篇
  2015年   625篇
  2014年   1642篇
  2013年   2530篇
  2012年   2168篇
  2011年   2085篇
  2010年   1662篇
  2009年   1885篇
  2008年   2338篇
  2007年   2697篇
  2006年   2780篇
  2005年   2224篇
  2004年   1528篇
  2003年   1466篇
  2002年   1020篇
  2001年   763篇
  2000年   424篇
  1999年   211篇
  1998年   153篇
  1997年   78篇
  1996年   54篇
  1995年   17篇
  1994年   19篇
  1993年   9篇
  1992年   23篇
  1991年   11篇
  1990年   4篇
  1989年   6篇
  1987年   1篇
  1985年   11篇
  1984年   8篇
  1983年   8篇
  1982年   11篇
  1981年   4篇
  1980年   1篇
  1979年   3篇
  1978年   6篇
  1976年   1篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
《Sport Management Review》2020,23(5):824-837
The purpose of this study was to explore nostalgia’s effect on MiLB spectators’ psychological, emotional, and behavioral responses. Mobile encephalography (EEG) headsets were used to monitor attendees’ neurological responses that may be indicative of nostalgia, while an ecological momentary assessment (EMA) permitted the capturing of spectators’ self-reported nostalgic levels. This approach allowed participants’ mental scores to be analyzed in relationship to their nostalgic occurrences. Brainwave frequencies emblematic of inward attention and arousal were significantly related with the number of instances spectators reported feeling nostalgic, which denote mental dispositions prevalent among attendees more prone to nostalgia. Moreover, PROCESS macro regression highlighted nostalgia’s ability to influence spectators’ behavioral intentions. Results also revealed environmental stimuli originating from sight, sound, and sociability to be especially prominent in triggering nostalgia. Overall, the study’s findings reveal unique characteristics present in baseball that render both immediate and enduring effects.  相似文献   
2.
随着现代信息技术的快速发展,"互联网+"这一概念频繁出现在公众视野。同时,,对高校体育事业的发展也产生了不可估量的影响。在《体育发展"十三五"规划》中,再次表明要实施"互联网+体育"战略,要将"互联网+"与全民运动融合到一起。本文在简要分析高校大学生课外体育活动现状基础上,重点探讨了基于手机APP创新普通高校课外体育活动的具体建议。  相似文献   
3.
运用文献资料法和逻辑分析法,从非均衡国家治理角度对我国职业足球改革面临的困境进行研究。通过梳理相关文献提出,当前国家治理模式具有非均衡性,存在各主体参与失范、治理权责分配失衡的问题,市场、社会、个人主体话语权较弱、参与性不足,形成了较强的政府依赖路径。对职业足球改革各主体之间的关系进行阐述,认为政府和足协是改革话语权的掌握者和资源的分配者,其他主体参与改革作用较小。指出,尚未明确职业足球的发展动机、足协组织能力与管理效能不足、各主体缺乏有效联系与合作是非均衡国家治理模式的具体表现;政府的非市场手段治理、市场失灵与第三部门失灵、个体意识与自我治理不足是其深层次原因。在此基础上提出相应的发展对策。  相似文献   
4.
沙敏 《档案管理》2020,(3):115-116
本文通过研究当前高校档案管理的重要性,结合实际的档案需求情况,分析了档案专题数据库基本的几种类型,来满足高校群体对档案信息的个性化需求,并通过对档案专题数据库模式的分析,制定了具体的应用措施,以便能够为相关人员提供信息参考。  相似文献   
5.
[目的/意义]本文通过对2019年国际数字图书馆联合会议(Joint Conference on Digital Library,JCDL)的录用论文进行整体回顾,梳理了本届年会的最新研究成果与学科发展动态,以助国内图情领域学者更好地了解本届年会成果,把握国际数字图书馆领域研究的前沿热点问题。[研究设计/方法]采用文献综述的方法进行研究。[结论/发现]本届年会更加关注数字图书馆如何通过多源数据的融合、数字人文馆藏资源的利用等实现信息服务深度融合;数字图书馆如何通过海量大数据挖掘与利用、用户行为分析提升其服务水平;如何通过对学术文本资源深入挖掘,实现信息计量学在学术评审、学术评价等方面的创新应用。[创新/价值]本文揭示了国际数字图书馆领域的最新发展态势,展望了未来数字图书馆领域的学术前沿方向。  相似文献   
6.
In this paper, the optimal synchronization controller design problem for complex dynamical networks with unknown system internal dynamics is studied. A necessary and sufficient condition on the existence of the optimal control minimizing a quadratic performance index is given. The optimal control law consists of a feedback control and a compensated feedforward control, and the feedback control gain can be obtained by solving the well-known Algebraic Riccati Equation (ARE). Especially, in the presence of unknown system dynamics, a novel adaptive iterative algorithm using the information of system states and inputs is proposed to solve the ARE to get the optimal feedback control gain. Finally, a simulation example shows the effectiveness of the theoretical results.  相似文献   
7.
Smart cities employ information and communication technologies to improve: the quality of life for its citizens, the local economy, transport, traffic management, environment, and interaction with government. Due to the relevance of smart cities (also referred using other related terms such as Digital City, Information City, Intelligent City, Knowledge-based City, Ubiquitous City, Wired City) to various stakeholders and the benefits and challenges associated with its implementation, the concept of smart cities has attracted significant attention from researchers within multiple fields, including information systems. This study provides a valuable synthesis of the relevant literature by analysing and discussing the key findings from existing research on issues related to smart cities from an Information Systems perspective. The research analysed and discussed in this study focuses on number of aspects of smart cities: smart mobility, smart living, smart environment, smart citizens, smart government, and smart architecture as well as related technologies and concepts. The discussion also focusses on the alignment of smart cities with the UN sustainable development goals. This comprehensive review offers critical insight to the key underlying research themes within smart cities, highlighting the limitations of current developments and potential future directions.  相似文献   
8.
The diffusion of knowledge within organizations provides opportunities for interpersonal co-operation, improves creative ability and therefore leads to competitive advantage. Focus of prior literature on knowledge diffusion has been on identifying factors that influence individuals' behavioral intentions to seek and share knowledge. However, knowledge diffusion as an enigmatic, emergent and organizational-level process is more than the simple aggregation of individual attributes and needs to be further investigated. Accordingly, this study focuses on three distinct system-level factors, i.e., architectures of connections among individuals, distributions of knowledge roles and designs of selection mechanisms and analyses their effects on knowledge diffusion. To be more specific, we examine three distinct knowledge roles: seekers, contributors and brokers. We also distinguish between three types of selection mechanisms: objective selection mechanisms, feedback-based selection mechanisms and random selection mechanisms. By conducting agent-based simulations on four representative networks, i.e., regular networks, random networks, small-world networks and scale-free networks, our results show that the optimal knowledge diffusion performance can be achieved on scale-free networks where all agents implement objective mechanisms and show characteristics of brokers. Moreover, our results (a) highlight the significance of brokers, (b) illustrate the superiority of objective selection rules and (c) demonstrate that scale-free networks provide an optimal framework for knowledge diffusion. Furthermore, we also find the interdependent relevance of these three factors to knowledge diffusion and propose a qualitative explanation of these findings.  相似文献   
9.
知识产权对象与客体的界定长期无法达成一致,对知识产权法学的体系化具有不利影响。从传统民事权利对象的界定方法来看,知识产权的对象就是知识和信息,是有价值、可再现并与现有知识、信息相区别的知识和信息,具体包括作品、专利技术方案、商标以及其他未公开的信息。结合权利的本质可知,知识产权的客体就是利用这些知识信息所生之利益。权利客体的财产性和权利对象的独特性,是知识产权成为独立一类民事权利的二元依据。  相似文献   
10.
BackgroundCompassion fatigue (i.e., a worker’s diminished ability to empathize with clients) is common among “helping workers” and can result in psychological detachment from clients as a coping mechanism.ObjectiveIn the present research, we explored the relationship between social workers’ compassion fatigue and years of job experience on hypothetical child custody case judgments.Participants and settingIn two separate studies, individuals with experience working with children in child dependency court (predominantly social workers, Study 1: N = 173, Study 2: N = 119) were recruited on Amazon’s Mechanical Turk and read a vignette depicting a mother attempting to regain custody.ResultsSupporting hypotheses, compassion fatigue significantly mediated the relationship between increased years of social worker job experience on recommendations that a neglectful mother receive custody, Indirect Effect = .06, CIs [.026, .127] (Study 1). We also found preliminary support for our hypothesized theoretically derived serial path model, in which (a) social worker compassion fatigue predicts anticipated secondary traumatic stress associated with the child neglect case, B = .54, p = .0001; (b) secondary traumatic stress predicts detachment from the neglected child, B = .27, p = .0003; (c) detachment from the child predicts job efficacy cynicism B = .65, p < .0001; and (d) job efficacy cynicism predicts decisions to allocate custody to the neglectful mother, B = .46, p = .005 (Study 2).ConclusionOur research shows that compassion fatigue among social workers may change the lens through which they perceive cases of child abuse.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号