全文获取类型
收费全文 | 8771篇 |
免费 | 68篇 |
国内免费 | 7篇 |
专业分类
教育 | 6474篇 |
科学研究 | 728篇 |
各国文化 | 147篇 |
体育 | 526篇 |
综合类 | 5篇 |
文化理论 | 105篇 |
信息传播 | 861篇 |
出版年
2021年 | 55篇 |
2020年 | 84篇 |
2019年 | 155篇 |
2018年 | 207篇 |
2017年 | 237篇 |
2016年 | 220篇 |
2015年 | 171篇 |
2014年 | 216篇 |
2013年 | 2047篇 |
2012年 | 172篇 |
2011年 | 192篇 |
2010年 | 182篇 |
2009年 | 158篇 |
2008年 | 200篇 |
2007年 | 205篇 |
2006年 | 188篇 |
2005年 | 191篇 |
2004年 | 177篇 |
2003年 | 154篇 |
2002年 | 147篇 |
2001年 | 126篇 |
2000年 | 126篇 |
1999年 | 133篇 |
1998年 | 113篇 |
1997年 | 117篇 |
1996年 | 118篇 |
1995年 | 147篇 |
1994年 | 121篇 |
1993年 | 106篇 |
1992年 | 114篇 |
1991年 | 106篇 |
1990年 | 102篇 |
1989年 | 107篇 |
1988年 | 98篇 |
1987年 | 96篇 |
1986年 | 88篇 |
1985年 | 99篇 |
1984年 | 105篇 |
1983年 | 99篇 |
1982年 | 109篇 |
1981年 | 82篇 |
1980年 | 61篇 |
1979年 | 74篇 |
1978年 | 77篇 |
1977年 | 85篇 |
1976年 | 67篇 |
1975年 | 56篇 |
1974年 | 59篇 |
1973年 | 60篇 |
1971年 | 44篇 |
排序方式: 共有8846条查询结果,搜索用时 9 毫秒
171.
George B. Semb John A. Ellis Marguerite A. Fitch Steve Parchman Cheryl Irick 《Performance Improvement Quarterly》1995,8(3):19-37
This article discusses the status of workplace training in the United States, describes a model of how to conduct effective on-the-job training, and presents the results of a questionnaire based on a model designed to assess on-the-job training practices aboard Navy ships. The model views the on-the-job trainer as a coach who guides the trainee through a task using three steps: 1) assessment, 2) training, and 3) evaluation. The questionnaire was sent to over 5,000 shipboard supervisors; 2,321 responded. Results indicate that nearly 50% of the Navy supervisors who responded are not as effective as they could be. The implications of these findings for the civilian workplace are discussed. 相似文献
172.
Margaret Henderson John W. Cyrus Erin R. B. Eldermire Jill T. Boruff Katherine G. Akers Beverly Murphy 《Journal of the Medical Library Association》2022,110(1):1
The Journal of the Medical Library Association (JMLA) selects new editorial board members every year. In the spring of 2021, JMLA used a new process for reviewing and selecting applicants for the limited number of open editorial board positions. This reevaluation of the selection process was spurred by a desire to create a more diverse and representative board. Changes to the procedures for selecting new editorial board members included having an open call for editorial board members, creating an application form, creating a selection committee to screen applicants, creating a form for the selection committee to extract data from applications, and creating a two-step process for screening and then selecting board members. As part of construction of this new process, areas for continued improvement were also identified, such as refining the application form to allow more specific answers to areas of interest to the selection committee. The newly created selection process for editorial board members constitutes a significant change in JMLA processes; however, more can be done to build on this work by further refining the selection process and ensuring that new members are selected in a transparent and streamlined manner. 相似文献
173.
Joseph Trovato John Harris Colin W. Pryor S. Cynthia Wilkinson 《Psychology in the schools》1992,29(1):52-61
An operant-based program was established to study the effectiveness of regular classroom teachers as mediators for behavior change in regular classroom settings. Fifty-nine first and second graders were matched on several measures and randomly assigned to an experimental condition or a control condition. Experimental children were addressed through teacher-generatedlconsultant-supported behavior intervention strategies. Changes in behavior were examined by assessing differences from initial baseline and from first to second administration of the Child Behavior Checklist. In- class behavior change was significantly greater for the experimental condition than for the control condition, although behavior change from first to second administration of the Child Behavior Checklist was significant for all groups. A moderate to high rate of compliance to the intervention program was maintained by teachers, and moderate to high ratings of satisfaction were obtained for the program from all participants. The effectiveness, feasibility, and applicability of the program are discussed. 相似文献
174.
Joy Patricia Burke Caroline E. Haworth John C. Brantley 《Psychology in the schools》1983,20(2):191-196
To identify professional groups that are providing psychological services in the schools, the present national survey of state departments of education was conducted. Fifty-nine percent of states currently mandate services of school psychologists by law, and a variety of allied professional groups were identified as also providing psychological services in the schools. Specific information about provider groups and service mandates is reported. Recommendations relevant to the provision of quality school-psychological services and utilization of multiple providers are given. 相似文献
175.
Grant R. Tomkinson Tetsuhiro Kidokoro Trevor J. Dufner Shingo Noi John S. Fitzgerald Holly M. Brown-Borg 《运动与健康科学(英文)》2021,10(4):462-469
BackgroundThe 6-minute walking distance (6MWD) is an excellent measure of both functional endurance and health. The primary aim of this study was to estimate temporal trends in 6MWD for older Japanese adults between 1998 and 2017; the secondary aim was to estimate concurrent trends in body size (i.e., height and mass) and self-reported participation in exercise/sport.MethodsAdults aged 65–79 years were included. Annual nationally representative 6MWD data (n = 103,505) for the entire period were obtained from the Japanese Ministry of Education, Culture, Sports, Science and Technology. Temporal trends in means (and relative frequencies) were estimated at the gender–age level by best-fitting sample-weighted linear/polynomial regression models, with national trends estimated by a post-stratified population-weighting procedure. Temporal trends in distributional variability were estimated as the ratio of coefficients of variation.ResultsBetween 1998 and 2017 there was a steady, moderate improvement in mean 6MWD (absolute = 45 m (95% confidence interval (95%CI): 43–47); percent = 8.0% (95%CI: 7.6%–8.4%); effect size = 0.51 (95%CI: 0.48–0.54)). Gender- and age-related temporal differences in means were negligible. Variability in 6MWD declined substantially (ratio of coefficients of variation = 0.89, 95%CI: 0.87–0.92), with declines larger for women compared to men, and for 75–79-year-olds compared to 65–74-year-olds. Correspondingly, there were moderate and negligible increases in mean height and mass, respectively, and negligible increases in the percentage who participated in exercise/sport at least 3 days per week and at least 30 min per session.ConclusionThere has been a steady, moderate improvement in mean 6MWD for older Japanese adults since 1998, which is suggestive of corresponding improvements in both functional endurance and health. The substantial decline in variability indicates that the temporal improvement in mean 6MWD was not uniform across the distribution. Trends in 6MWD are probably influenced by corresponding trends in body size and/or participation in exercise/sport. 相似文献
176.
John P. Gaa 《Psychology in the schools》1979,16(4):591-597
The study was designed to investigate the effects of individual goal-setting conferences on classroom achievement and locus of control orientation. Subjects were blocked on sex and previous achievement and randomly assigned to one of three treatment groups: the goal-setting (GS) group, which received weekly individual goal-setting conferences; the conference (Cf) group, which received weekly individual conferences but set no goals; and the control (C) group, which received no conferences. Analyses of the data showed a significant treatment effect for achievement across treatment groups, with the GS group having significantly higher achievement than the Cf and C groups. Treatment effect across locus of control measures across treatment groups was less clear, although post hoc analyses indicated that the GS group was significantly more internal than either the Cf or C groups on the three intellectually oriented measures. 相似文献
177.
John L. Cotterell 《Psychology in the schools》1982,19(1):106-112
Thirty-five studies relating to D. E. Hunt's notion of matching environments to learners were reviewed. The studies were grouped according to their outcome measures into affective, behavioral, and achievement outcomes. Empirical support for the matching principle was found for all three outcomes, but varied from strong support for affective and behavioral criteria to moderate support for achievement. The article discusses these differences, and advocates that future research studies give greater attention to the conceptualization and measurement of teaching environments. It concludes that there is empirical validation for the matching principle, and that matching is a meaningful way of describing the process of adapting instructional approaches to student differences. 相似文献
178.
CERN: Past performance and future prospects: II. The scientific performance of the CERN accelerators
In a series of three papers, we attempt to evaluate the past scientific performance of the three main particle accelerators at the Geneva-based European Organization for Nuclear Research (CERN) over the period since 1960, and to assess the future prospects for CERN and its users during the next ten to fifteen years.We concerned ourselves in a previous paper (Paper 1 - Martin and Irvine [51] with the position of the CERN accelerators in world high-energy physics relative to those at other large laboratories working in the field. We dealt primarily with the period from 1969 to 1978, and attempted to establish how the experimental output from the three principal CERN accelerators, taken as a whole, compared with that from other major facilities. In undertaking this comparative evaluation, we drew on the method of “converging partial indicators” used in previous studies of three Big Science specialties.In contrast, this paper (Paper II) focuses in detail on the scientific performance of each of the CERN accelerators taken individually. In particular, it asks, first, how the outputs from the CERN 28 GeV (giga or billion electron-volts) Proton Synchrotron compare with those from a very similar 33 GeV American accelerator at Brookhaven National Laboratory over the past two decades? Second, how great have been the experimental achievements of the Intersecting Storage Rings in world terms? And, third, how do the outputs from the CERN 400 GeV Super Proton Synchrotron and from a rival American machine at Fermi National Accelerator Laboratory compare? Attempts are then made to identify the main factors responsible for determining the relative scientific performance of each CERN machine.These factors are of relevance to the subject of a third paper (Paper III - Martin and Irvine [52]) which sets out to assess the future prospects for CERN and in particular for LEP, the large electron-positron collider scheduled for completion in the latter part of the 1980s. What are the construction requirements (financial and technical) associated with LEP, and how easily will they be met? How does the scientific potential of LEP compare with that of other major accelerators under construction around the world? And, in the light of the previous record of the CERN accelerators, to what extent is this potential likely to be realized? The paper concludes with a discussion of the extent to which predictive techniques can be utilized in the formulation of scientific priorities, and of the problems in current science policy-making that such techniques might help address. 相似文献
179.
180.
John D. Van Buren 《Journal of The Franklin Institute》1866,81(4):219-223