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   23125篇
  免费   276篇
  国内免费   134篇
教育   15667篇
科学研究   2439篇
各国文化   239篇
体育   2437篇
综合类   29篇
文化理论   166篇
信息传播   2558篇
  2021年   181篇
  2020年   344篇
  2019年   480篇
  2018年   601篇
  2017年   675篇
  2016年   607篇
  2015年   406篇
  2014年   535篇
  2013年   4051篇
  2012年   473篇
  2011年   512篇
  2010年   421篇
  2009年   463篇
  2008年   438篇
  2007年   420篇
  2006年   430篇
  2005年   382篇
  2004年   622篇
  2003年   544篇
  2002年   524篇
  2001年   598篇
  2000年   461篇
  1999年   348篇
  1998年   194篇
  1997年   214篇
  1996年   238篇
  1995年   238篇
  1994年   221篇
  1993年   192篇
  1992年   316篇
  1991年   284篇
  1990年   281篇
  1989年   346篇
  1988年   276篇
  1987年   322篇
  1986年   284篇
  1985年   343篇
  1984年   299篇
  1983年   284篇
  1982年   240篇
  1981年   202篇
  1980年   192篇
  1979年   297篇
  1978年   217篇
  1977年   187篇
  1976年   220篇
  1975年   164篇
  1974年   183篇
  1973年   155篇
  1971年   165篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
942.
This article reports the results of a survey of literature on measures of library effectiveness. This survey led to the formulation of six criterion concepts (accessibility, cost, user satisfaction, response time, cost/benefit ratio, and use). The advantages and disadvantages of each method of measurement are discussed. Several points which became clear during the analysis are discussed. First, there is a relative lack of concern with the rationale behind the evaluation process, although the results invariably lead to a confused interpretation when there is no clear understanding of the purpose of an evaluation. Second, the total library system is rarely considered; instead, each evaluation criterion is taken in isolation rather than as part of the whole. Third, the library's preservation function has not been considered at all.  相似文献   
943.
Abstract

Form A of the Wear Attitude Inventory was administered to one randomly selected physical education class of seventh grade boys, one class of eighth grade boys, and one class of ninth grade boys in each of five junior high schools. The mean Inventory score for each grade was found to be equal to or superior to the mean reported in Wear's validation study. A significant X2 value was found for the distribution of Inventory scores of the three junior high school grades. A biserial coefficient of correlation item analysis which was computed for each of the three grades established that the 30 items correlated significantly with the total score and that the item score also had a significant correlation with the Inventory category score. On the basis of these results, the conclusion was advanced that the Wear Attitude Inventory was an appropriate instrument to measure attitudes of junior high school boys toward physical education.  相似文献   
944.
ABSTRACT

User feedback told the story of the largest and busiest campus library being dated in both physical form and programmatic function. Under the framework of a newly-developed strategic plan, library leadership initiated a comprehensive and inclusive assessment program to understand fully user needs by engaging users, campus partners, and, importantly, library personnel. Simultaneously, they embarked on a review of change management literature for guidance on implementing the required transformation. Informed by the change management philosophy of John Kotter, the library utilized the findings of the assessment program to craft and implement a sustainable transformation of its services, staffing, and spaces.  相似文献   
945.
Varda Langholz Leymore's Hidden Myth: Structure and Symbolism in Advertising (New York: Basic Books, 1975—$10.00).

John S. Wright and John E. Mertes's Advertising's Role ie Society. (St. Paul, Minn.: West Publishing Co., 1974—price not given, paper).

Allan M. Cartter's Ph.D's and the Academic Labor Market (New York: McGraw-Hill, 1976—$12.50).  相似文献   
946.
Handedness has been studied for association with language-related disorders because of its link with language hemispheric dominance. No clear pattern has emerged, possibly because of small samples, publication bias, and heterogeneous criteria across studies. Non-right-handedness (NRH) frequency was assessed in N = 2503 cases with reading and/or language impairment and N = 4316 sex-matched controls identified from 10 distinct cohorts (age range 6–19 years old; European ethnicity) using a priori set criteria. A meta-analysis (Ncases = 1994) showed elevated NRH % in individuals with language/reading impairment compared with controls (OR = 1.21, CI = 1.06–1.39, p = .01). The association between reading/language impairments and NRH could result from shared pathways underlying brain lateralization, handedness, and cognitive functions.  相似文献   
947.
OBJECTIVES: The United Arab Emirates is witnessing a rapid development in population and infrastructure, leading to an expansion in the educational field and the health care system, including universities, hospitals and research institutes. One potential outcome of this development is an increase in biomedical research publications. This was examined in this study. METHOD: Searches were made of three databases; PubMed, Current Contents and embase. All records from these databases related to the Emirates were downloaded and cross-referenced. Duplications were removed as well as erroneous records. A total of 1369 publications during 1998-2004 were obtained. RESULTS: Analysis of these records revealed that the Faculty of Medicine and Health Sciences, located at the federal University, was responsible for 48% of all biomedical publications. All hospitals together accounted for 24%, while other universities and other research institutes accounted for 13 and 14% respectively. Further analysis revealed that there had been no further growth in the number of publications since 1998. This is in contrast to the increasing number of institutions that have been set up in the 1998-2004 period; from 29 to 112. CONCLUSION: The Emirates are witnessing a rapid development in universities, colleges, hospitals and research centres. The ratio of publications, as yet, has not kept up with this development. The enormous growth in institutes, however, may, in time, herald an Arabian renaissance in scientific activity and related publications.  相似文献   
948.
949.
Social loafing refers to the tendency for individuals to reduce their own personal input when performing as part of group. This phenomenon may be problematic if it exists in educational contexts, given a current emphasis on group collaborative classroom activities. The present study investigated whether social loafing existed in a collaborative educational task, employing groups of three and eight participants. The results indicated that individuals working within the smaller groups were more productive than those working in larger groups, consistent with the social loafing hypothesis. Future research should determine whether the detrimental effects on students' collaborative performance attributable to social loafing are justifiable in terms of gains accrued in other (e.g. interpersonal) domains.  相似文献   
950.
Drawing on linguistic anthropological notions of language ideologies and sociolinguistic approaches to stance, this study examines the meaning-making resources through which Spanish heritage language (HL) learners orient toward ideological perspectives on language value and linguistic expertise in classroom interaction. Part of a larger ethnographic study, data in the present study include about 26 hours of audio and video recordings from three different intermediate Spanish HL classrooms and filmed interviews with the students. The analysis indicates that discourses of legitimacy and expertise are embodied within multiple levels of classroom interaction, including affective stancetaking, expert/novice positioning, and the reframing of both ascribed social positions and previous discourse. Results suggest that the role of language ideologies in HL learning can be better understood through an examination of stancetaking in interaction and that the construction of different kinds of expertise should be an important consideration in the development of HL instructional practices.  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