全文获取类型
收费全文 | 6315篇 |
免费 | 157篇 |
国内免费 | 3篇 |
专业分类
管理学 | 986篇 |
民族学 | 54篇 |
人才学 | 9篇 |
人口学 | 499篇 |
丛书文集 | 47篇 |
理论方法论 | 769篇 |
综合类 | 51篇 |
社会学 | 3260篇 |
统计学 | 800篇 |
出版年
2023年 | 38篇 |
2022年 | 29篇 |
2021年 | 46篇 |
2020年 | 113篇 |
2019年 | 163篇 |
2018年 | 195篇 |
2017年 | 199篇 |
2016年 | 202篇 |
2015年 | 142篇 |
2014年 | 163篇 |
2013年 | 994篇 |
2012年 | 222篇 |
2011年 | 241篇 |
2010年 | 188篇 |
2009年 | 155篇 |
2008年 | 191篇 |
2007年 | 216篇 |
2006年 | 198篇 |
2005年 | 222篇 |
2004年 | 193篇 |
2003年 | 169篇 |
2002年 | 167篇 |
2001年 | 113篇 |
2000年 | 150篇 |
1999年 | 122篇 |
1998年 | 110篇 |
1997年 | 103篇 |
1996年 | 94篇 |
1995年 | 83篇 |
1994年 | 107篇 |
1993年 | 90篇 |
1992年 | 96篇 |
1991年 | 64篇 |
1990年 | 55篇 |
1989年 | 56篇 |
1988年 | 68篇 |
1987年 | 52篇 |
1986年 | 47篇 |
1985年 | 56篇 |
1984年 | 67篇 |
1983年 | 54篇 |
1982年 | 58篇 |
1981年 | 50篇 |
1980年 | 51篇 |
1979年 | 44篇 |
1978年 | 32篇 |
1977年 | 31篇 |
1976年 | 46篇 |
1975年 | 26篇 |
1974年 | 35篇 |
排序方式: 共有6475条查询结果,搜索用时 15 毫秒
101.
Chanáe A. Jamison David P. Kelley III Cynthia Schmitt A. Celeste Harvey Emily Meyer 《Journal of Organizational Behavior Management》2014,34(4):279-290
Interactive Computer Based Instruction (CBI) systems involve teaching strategies to facilitate greater response opportunities during training in an effort to improve learner performance. The current study investigated the effect of online staff training videos with and without overt response requirements on posttest and maintenance test scores across six block-randomized instructional modules for four employees of a university located in the southeastern region of the United States. The overt response consisted of multiple-choice questions administered throughout select teaching modules using an alternating treatment design. Findings suggest that learning occurred as a result of the CBI training; however, the effectiveness of the overt response system varied across individuals, with no discernible differentiation between learning gains associated with response requirements. Other areas of research for expanding the efficacy of CBI and overt response systems are highlighted. 相似文献
102.
ABSTRACTWe consider action research as a form of deliberative policy analysis. This analysis explores a “reconstruction clinic” in which stakeholders and public officials engaged memories, hopes and obligations as they sought to resolve controversies over details of policy implementation. We ask how institutional design shaped participants’ reflective and deliberative progress. Reflection in action can prompt not only changes in cognitive frames, but new behavioural capacities for action. Deliberative practices can shape new relationships between parties through the work of apology, recognition, appreciation, and emergent collaboration. 相似文献
103.
The use of Performance-Based Management (PBM) by French public organizations has sharply accelerated over the last few years. Moreover, very few studies have analyzed this change. The object of this article is thus to conduct an in-depth analysis of the dynamics of managerial innovation in three French local authorities via the study of the factors that foster the adoption and implementation of PBM by this type of organization. We demonstrate a tendency to overestimate the explanatory power of the neo-institutionalist theories. Indeed, our analysis illustrates a balanced vision of the human, technical and contextual factors at the origin of this type of managerial innovation. 相似文献
104.
David Denborough 《Australian and New Zealand Journal of Family Therapy》2009,30(2):92-108
This article, which appears in a special 30‐year anniversary edition of the Australian and New Zealand Journal of Family Therapy, reflects on the legacies of the work of Michael White. It begins by looking back on Michael's time as editor of the Australian Journal of Family Therapy. Of the many themes that were discussed in the Editorials and Letters to the Editor section of this journal in the early 1980s, this article focuses on three in particular to explore the legacies of the work of Michael White. The author describes how Michael has bequeathed not only a profound body of work, but also a distinctive spirit of originating, and ways of working that consider the effects of social issues and that examine the politics of experience. It is the author's hope that this approach to considering Michael White's legacies honours his work and also honours the contributions of the Australian and New Zealand Journal of Family Therapy in its 30th year. 相似文献
105.
Bernard Sébastien David Hoffman Clémence Rigaux Franck Pellissier Jérôme Msihid 《Pharmaceutical statistics》2016,15(6):450-458
This article describes how a frequentist model averaging approach can be used for concentration–QT analyses in the context of thorough QTc studies. Based on simulations, we have concluded that starting from three candidate model families (linear, exponential, and Emax) the model averaging approach leads to treatment effect estimates that are quite robust with respect to the control of the type I error in nearly all simulated scenarios; in particular, with the model averaging approach, the type I error appears less sensitive to model misspecification than the widely used linear model. We noticed also few differences in terms of performance between the model averaging approach and the more classical model selection approach, but we believe that, despite both can be recommended in practice, the model averaging approach can be more appealing because of some deficiencies of model selection approach pointed out in the literature. We think that a model averaging or model selection approach should be systematically considered for conducting concentration–QT analyses. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
106.
We examined whether adolescent sexual abstinence predicts better adult mental health. 1,917 adolescents, recruited from middle schools at age 13, were surveyed at ages 13, 18, 23, and 29. In bivariate analyses, adolescent sexual abstinence was associated with better mental health at age 29 for females, but not males; three adolescent factors, educational prospects, family bonding, and unconventionality were investigated as explanatory variables of this relationship. The abstinence-mental health relationship was nonsignificant when educational prospects was included in multivariate models, and marginally significant when family bonding and unconventionality were included; all three explanatory factors accounted for significant proportions of the variance in adult mental health. Girls who are uninvolved in school, have weak family backgrounds, and exhibit unconventionality may have poor adult mental health, whether or not they abstain from sex in adolescence. Interventions that strengthen adolescents' connections to families and schools may reduce risk for long-term mental health problems. 相似文献
107.
One in five students report experimenting with tobacco before the age of 13 and most prevention efforts take place in the school setting. This study measures the effect of a single-lesson tobacco prevention curriculum, conducted by a health education center, focusing on knowledge of tobacco, ability to identify refusal techniques, and intent not to smoke. Data were collected, via electronic keypads, from students visiting a non-school, health education center in Michigan (n = 704 intervention and 85 comparison). Contingency table Chi-squared tests and t-tests demonstrated that a single lesson can improve general knowledge and ability to identify appropriate refusal techniques. Improvement in intent not to smoke was not significant because both groups had very high intent prior to implementation. Similar to results from other programs, multivariate logistic regression of gender, general knowledge, and skill identification revealed that only the skill variable was associated with intent not to smoke at pretest. Recommendations are given for further research and for designing more effective curricula or programs. 相似文献
108.
Holbrook Allyson L.; Krosnick Jon A.; Moore David; Tourangeau Roger 《Public opinion quarterly》2007,71(3):325-348
Using data from 548 experiments in telephone surveys conductedby the Gallup Organization, we explored how attributes of questionsand respondents moderate response order effects in dichotomouscategorical questions. These effects were predominantly recencyeffects and occurred most in questions that were more difficultto comprehend (especially among respondents with the least education),with response choices that were more difficult to comprehend(because they were complete sentences instead of words or phrasesand because they were not mutually exclusive), and that wereasked after many prior questions. Recency effects were alsomore common in questions that explicitly or implicitly encouragedrespondents to wait until they had heard all the answer choicesbefore formulating a judgment than in questions that inducedrespondents to begin formulating a judgment before all the answerchoices had been read (especially among the least educated respondents).A study of interviewer behavior revealed patterns of pausingbetween and within sentences that help to explain why some typesof questions are especially prone to recency effects and othersare not. 相似文献
109.
At-work exercises are commonly recommended for computer operators. This randomized control trial assessed adherence, pain and satisfaction after 4 weeks of at-work exercise. Subjects (n=72) were randomized into 3 groups: resistance exercise, stretching, and control. Outcomes included a satisfaction survey, a visual analogue pain scale (VAS), a pain drawing, and the Neck Disability Index (NDI). The VAS, the drawing, and NDI were analyzed together as a composite variate referred to as Pain Impact. Exercise frequency was similar across the 3 groups (median=1.5 times per day). No differences were found between groups on Pain Impact p=0.714) or individual pain variables. Most satisfaction survey item scores did not differ between groups. However, a significant difference between groups on the survey item related to discomfort. The resistance and stretching group differed from the control group with regard to their perception that the exercises were helpful in reducing discomfort in the back and neck (p<0.001). We conclude that most subjects found the resistance and the stretching exercises easy to do, performed them 1 to 2 times daily, and said they reduced discomfort. To determine optimal type and frequency of at-work exercises, further study is needed. 相似文献
110.
Bersamin M Paschall MJ Fearnow-Kenney M Wyrick D 《Journal of American college health : J of ACH》2007,55(4):247-254
OBJECTIVE: In the current study, the authors assessed whether a new online alcohol-misuse prevention course (College Alc) is more effective at reducing alcohol use and related consequences among drinkers and nondrinkers. PARTICIPANTS: The authors compared incoming college freshmen who reported any past 30-day alcohol use before the beginning of the semester with those who did not. METHOD SUMMARY: The authors randomly assigned students who completed a precollege baseline survey to either complete a 3-hour noncredit version of College Alc or serve as members of a control group. The authors conducted a follow-up survey 3 months later. RESULTS: Findings indicated that among freshmen who were regular drinkers before college, College Alc appeared to reduce the frequency of heavy drinking, drunkenness, and negative alcohol-related consequences. Among freshmen who did not report any past-30-day alcohol use before college, College Alc did not appear to have any beneficial effects. CONCLUSIONS: Results suggest that College Alc may be an effective program for students with a history of alcohol use. 相似文献