全文获取类型
收费全文 | 932篇 |
免费 | 11篇 |
国内免费 | 16篇 |
专业分类
教育 | 619篇 |
科学研究 | 102篇 |
各国文化 | 55篇 |
体育 | 42篇 |
综合类 | 50篇 |
文化理论 | 2篇 |
信息传播 | 89篇 |
出版年
2023年 | 8篇 |
2021年 | 12篇 |
2020年 | 25篇 |
2019年 | 21篇 |
2018年 | 6篇 |
2017年 | 20篇 |
2016年 | 23篇 |
2015年 | 21篇 |
2014年 | 47篇 |
2013年 | 68篇 |
2012年 | 62篇 |
2011年 | 76篇 |
2010年 | 71篇 |
2009年 | 70篇 |
2008年 | 61篇 |
2007年 | 83篇 |
2006年 | 68篇 |
2005年 | 51篇 |
2004年 | 49篇 |
2003年 | 35篇 |
2002年 | 28篇 |
2001年 | 20篇 |
2000年 | 16篇 |
1999年 | 7篇 |
1998年 | 3篇 |
1997年 | 3篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1992年 | 2篇 |
排序方式: 共有959条查询结果,搜索用时 762 毫秒
1.
国外Information Commons(IC)模式解读 总被引:13,自引:1,他引:13
Information Commons(信息共享中心,简称IC),是20世纪90年代末,国外高校图书馆为适应用户需求的变化和研究的需要而建立起来的一种基础设施和新的服务模式。文章通过描述IC的理念及IC服务模式的演变过程,探讨了IC服务在我国高校图书馆实践的意义与可行性,为我国高校图书馆深化信息服务提供借鉴。 相似文献
2.
校园一卡通系统与图书馆读者数据库的建设 总被引:8,自引:0,他引:8
校园一卡通系统需要一个规范而标准的图书馆读者数据库与之相衔接,文章在分析图书馆原有读者数据库中存在问题的基础上,提出了清理和完善该数据库的若干措施,并在实际应用中加以实施。 相似文献
3.
一、建立非公有制企业信用档案的必要性 非公有制企业信用档案是国家档案资源的组成部分,也是社会诚信体系建设的重要基础。 相似文献
4.
借助二元抛物线引理,探讨一类二元非乘积型Meyer-knig and Zeller概率算子的饱和性,得到了一个点态饱和定理. 相似文献
5.
J. Santos-Concejero N. Tam D. R. Coetzee J. Oliván T. D. Noakes R. Tucker 《Journal of sports sciences》2017,35(6):531-538
The aim of this study was to determine whether gait cycle characteristics are associated with running economy in elite Kenyan runners. Fifteen elite Kenyan male runners completed two constant-speed running sets on a treadmill (12 km ·h?1 and 20 km ·h?1). VO2 and respiratory exchange ratio values were measured to calculate steady-state oxygen and energy cost of running. Gait cycle characteristics and ground contact forces were measured at each speed. Oxygen cost of running at different velocities was 192.2 ± 14.7 ml· kg?1· km?1 at 12 km· h?1 and 184.8 ± 9.9 ml· kg?1· km?1 at 20 km· h?1, which corresponded to a caloric cost of running of 0.94 ± 0.07 kcal ·kg?1·km?1 and 0.93 ± 0.07 kcal· kg?1· km?1. We found no significant correlations between oxygen and energy cost of running and biomechanical variables and ground reaction forces at either 12 or 20 km· h?1. However, ground contact times were ~10.0% shorter (very large effect) than in previously published literature in elite runners at similar speeds, alongside an 8.9% lower oxygen cost (very large effect). These results provide evidence to hypothesise that the short ground contact times may contribute to the exceptional running economy of Kenyan runners. 相似文献
6.
Among minority members, positive contact with the majority was previously found to improve not only the attitudes toward the majority but also the attitudes toward minority outgroups (the secondary transfer effect; STE). However, the roles of negative intergroup contact and minority groups’ social status in the STE have not been yet examined. Therefore, in the present study, we investigated the association between both positive and negative contact with the national majority group (Finns) and mutual attitudes among high-status Estonian (n = 171) and low-status Russian (n = 180) immigrants in Finland. Two mediators of the STE were tested: attitudes toward the majority (attitude generalization) and public collective self-esteem (diagonal hostility). While positive and negative STEs emerging via attitude generalization were expected to occur among both immigrant groups, the mediating effect of public collective self-esteem was assumed only for members of the low-status group. In both immigrant groups, the relationship between positive contact with the majority group and attitudes toward the other immigrant group was positive and indirect through more favorable attitudes toward majority group members. The same mechanism characterized negative contact, where the indirect effect was mediated by less positive attitudes toward Finns. As predicted, public collective self-esteem mediated the effects of positive and negative contact with majority group members on attitudes toward the other minority only among low-status Russian immigrants. The results call for the acknowledgement of different mechanisms explaining the STE among minority groups enjoying different social statuses in host society. 相似文献
7.
This study tests how the density of the social network in which intergroup contact takes place might affect the extent to which contact improves intergroup attitudes. Having contact with more outgroup members in dense social networks, in which everybody knows each other, may reinforce contact's positive effect. In this case, outgroup contact is shared with ingroup members, which suggests positive ingroup norms toward the outgroup. Alternatively, more contact in denser networks may improve intergroup attitudes less because density may increase subtyping or reduce the salience of ethnic group memberships. These competing hypotheses are tested among white American adults in a nonprobability online sample (N = 305) and in a representative national sample (N = 1270). In both studies, contact is associated with more positive attitudes toward racial outgroups but the positive contact effect is weakened if that contact takes place in a denser social network. 相似文献
8.
English Proficiency,Identity, Anxiety,and Intergroup Attitudes: US Americans’ Perceptions of Chinese
Makiko Imamura Racheal A. Ruble Yan Bing Zhang 《Journal of Intercultural Communication Research》2016,45(6):526-539
Guided by the Common Ingroup Identity Model and Berry’s acculturation framework, this study examined the roles that perceptions of language proficiency, cultural identity, and communication anxiety had on intergroup attitudes and stereotypes in the American–Chinese contact context. Serial mediation analyses with 10,000 bootstrap samples revealed that perceived English proficiency of a Chinese contact had significant indirect effects on affective and behavioral attitudes toward Chinese through American participants’ perceptions of their contact’s host and home culture identification and communication anxiety. Perceived English proficiency had an indirect effect only on positive stereotypes through the Chinese contact’s perceived identification with home culture. 相似文献
9.
Ning Liu Yan Bing Zhang Weston T. Wiebe 《Journal of Intercultural Communication Research》2017,46(4):330-345
From the theoretical perspectives of intergroup contact, predicted outcome value (POV), and similarity-attraction, this study examined U.S. host nationals’ (N = 342) communicative behaviours in a recent initial encounter with an international student and attitudes toward the student’s cultural group as a whole. Testing of two models indicated the significant sequential mediator effects of perceived similarity-social attraction and POV-social attraction between communication variables (e.g. amount of communication exchange in both models, self-disclosure in model 1, and information seeking in model 2), and intergroup attitudes (e.g. behavioural attitudes). Findings in general demonstrated that contact effects in the intercultural context varied according to specific measures of communication, the mediating mechanisms, and intergroup attitudes. 相似文献
10.