全文获取类型
收费全文 | 34738篇 |
免费 | 952篇 |
国内免费 | 1篇 |
专业分类
管理学 | 4557篇 |
民族学 | 164篇 |
人才学 | 9篇 |
人口学 | 3349篇 |
丛书文集 | 180篇 |
教育普及 | 3篇 |
理论方法论 | 3225篇 |
现状及发展 | 2篇 |
综合类 | 472篇 |
社会学 | 17166篇 |
统计学 | 6564篇 |
出版年
2023年 | 157篇 |
2021年 | 191篇 |
2020年 | 518篇 |
2019年 | 768篇 |
2018年 | 832篇 |
2017年 | 1143篇 |
2016年 | 852篇 |
2015年 | 659篇 |
2014年 | 830篇 |
2013年 | 5683篇 |
2012年 | 1166篇 |
2011年 | 1096篇 |
2010年 | 829篇 |
2009年 | 756篇 |
2008年 | 862篇 |
2007年 | 903篇 |
2006年 | 840篇 |
2005年 | 799篇 |
2004年 | 767篇 |
2003年 | 707篇 |
2002年 | 746篇 |
2001年 | 897篇 |
2000年 | 841篇 |
1999年 | 775篇 |
1998年 | 599篇 |
1997年 | 551篇 |
1996年 | 564篇 |
1995年 | 537篇 |
1994年 | 505篇 |
1993年 | 502篇 |
1992年 | 583篇 |
1991年 | 563篇 |
1990年 | 496篇 |
1989年 | 507篇 |
1988年 | 494篇 |
1987年 | 441篇 |
1986年 | 428篇 |
1985年 | 482篇 |
1984年 | 475篇 |
1983年 | 448篇 |
1982年 | 367篇 |
1981年 | 315篇 |
1980年 | 312篇 |
1979年 | 339篇 |
1978年 | 299篇 |
1977年 | 278篇 |
1976年 | 243篇 |
1975年 | 261篇 |
1974年 | 200篇 |
1973年 | 179篇 |
排序方式: 共有10000条查询结果,搜索用时 171 毫秒
891.
892.
David E. Bloom Mathew J. McKenna Klaus Prettner 《International social security review》2019,72(3):43-78
Globally, an estimated 734 million jobs will be required between 2010 and 2030 to accommodate recent and ongoing demographic shifts, account for plausible changes in labour force participation rates, and achieve target unemployment rates of at or below 4 per cent for adults and at or below 8 per cent for youth. The facts that most new jobs will be required in countries where “decent” jobs are less prevalent and workers in many occupations are increasingly subject to risks of automation further compound the challenge of job creation, which is already quite sizable in historical perspective. Failure to create the jobs that are needed through 2030 would put currently operative social security systems under pressure and undermine efforts to guarantee the national social protection floors enshrined in the Sustainable Development Goals (SDGs). 相似文献
893.
894.
Jeroen Pronk Tjeert Olthof Frits A. Goossens Lydia Krabbendam 《Social Development》2019,28(2):414-429
Adolescents’ defending of peers who are being bullied—or peer defending—was recently found to be a heterogeneous behavioral construct. The present study investigated individual differences in adolescents’ motivations for executing these indirect, direct, and hybrid defending behaviors. In line with the literature on bullying as goal‐directed strategic behavior, we adopted a social evolution theory framework to investigate whether these peer‐defending behaviors could qualify as goal‐directed strategic prosocial behaviors. A sample of 549 Dutch adolescents (49.4% boys; Mage = 12.5 years, SD = 0.6 years) participated in this study. Their peer reported defending behaviors (including bullying behavior as a control variable) and the following behavioral motivations were assessed: (a) agentic and communal goals (self‐report), (b) prosocial and coercive social strategies (peer report), and (c) altruistic and egocentric motivations for prosocial behavior (self‐report). The outcomes of hierarchical linear regression analyses suggest that adolescents’ motivations for executing the different subtypes of peer defending partially overlap but are also different. While indirect defending was fostered by genuine concerns for victims’ well‐being, direct defending was more motivated by personal gains. Hybrid defending combined favorable aspects of both indirect and direct defending as a goal‐directed, strategic, and altruistically motivated prosocial behavior. The implications of these findings are discussed. 相似文献
895.
Renata Porzig-Drummond Richard J. Stevenson Caroline Stevenson 《Australian Social Work》2016,69(4):388-402
Cognitive-behavioural parenting programs provide caregivers with alternative strategies to harsh disciplining practices but the choice of programs that are evidence-based in Australia is limited. Australian community service workers suggest that having a choice of evidence-based programs is important when matching programs to client needs, and that 1-2-3 Magic is a program used widely in Australia despite its small Australian evidence base. The efficacy of the 1-2-3 Magic program has previously been shown in a controlled trial in an Australian university research setting but little is known about its effectiveness in a “real-world” setting. This study examined a three-session group-format of the Australian 1-2-3 Magic & Emotion Coaching program in a typical metropolitan community service setting. Thirty-eight caregivers with children aged 2–6 years reported a significant decrease in disruptive child behaviour (ECBI), permissive parenting (PS), and parental depression and stress (DASS) from pre- to post-intervention, with results maintained at 3-month follow-up. While these findings suggest that a brief 1-2-3 Magic program is beneficial, it is important to note that methodological limitations (intervention-group only study design and possible confounding variables) do not allow ruling out alternative causes for these improvements. Further research will be needed to confirm that this program can generalise to “real-world” settings. 相似文献
896.
Over the last fifteen years companies tended to formalise their innovation management activities and to establish formal jobs like the innovation officer, the network manager or the innovation manager. Knowledge of the informal role profiles of these formal roles is still rare. HR and R&D Managers do not know which informal role profile might suit them best, thus having difficulties to assign the best candidates for jobs in innovation management. Researchers cannot help to resolve the problem. Our research answers the question what innovation managers really do, by analysing their tasks, skills and traits, theoretically based on informal role theories. Furthermore, we will analyse how these characteristics change with company size. To provide answers to our research questions we choose a multiple-case study approach. We found, among others, that innovation managers fulfil the role of the relationship and process promotor or a combination of both with the champion, but we also found, that the innovation manager’s roles profile becomes fuzzier with shrinking company size. Our results have practical implications for top management and also HR and R&D managers, enabling them to better select and steer employees in innovation management. Researchers will be able to build on our results because we offer a comprehensive understanding of the informal role profiles of innovation managers based on informal role theories. 相似文献
897.
Jeff A. Greiner 《Social Studies》2016,107(6):200-208
The Wake County Public School System (WCPSS), in the state of North Carolina, has gone through considerable recent effort to revise, support, and assess their seventh-grade social studies curriculum in an effort to serve three goals: comply with the Common Core State Standards (Common Core), comply with the North Carolina Essential Standards (Essential Standards), and create a curriculum that best serves students. Meanwhile, the curriculum theory of social meliorism was conceived of over a century ago. Since its inception it has influenced curriculum development and provided a foundation for many other curriculum theories that all start from an assumption that social meliorism holds to an accepted truth that the purpose of education is to improve society and address its injustices. Given contemporary discussions about how to achieve social justice, this is a philosophy that seems particularly meaningful when thinking about the ways that schools can help to accomplish the goals of social justice. I intend to investigate the seventh-grade social studies curriculum of WCPSS in 2014 and juxtapose it with the goals and ideals of social meliorism, determine how well the curriculum addresses the goals of that curriculum theory, and make suggestions for how a social meliorist might suggest modifying the curriculum to better serve the needs of society. 相似文献
898.
Erks Rebekka L. Allen Joseph A. Harland Lynn K. Prange Kelly 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2021,32(6):1285-1298
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - Many non-profit organizations rely on volunteers to further their mission, but volunteer rates linger at only 25% of the... 相似文献
899.
Ofir Harari Grace Hsu Louis Dron Jay J. H. Park Kristian Thorlund Edward J. Mills 《Pharmaceutical statistics》2021,20(2):256-271
The Bayesian paradigm provides an ideal platform to update uncertainties and carry them over into the future in the presence of data. Bayesian predictive power (BPP) reflects our belief in the eventual success of a clinical trial to meet its goals. In this paper we derive mathematical expressions for the most common types of outcomes, to make the BPP accessible to practitioners, facilitate fast computations in adaptive trial design simulations that use interim futility monitoring, and propose an organized BPP-based phase II-to-phase III design framework. 相似文献
900.
Alison L. Antes John T. Chibnall Kari A. Baldwin Raymond C. Tait Jillon S. Vander Wal James M. DuBois 《Accountability in research》2016,23(5):288-308
The professional decision-making in research (PDR) measure was administered to 400 National Institutes of Health (NIH)-funded and industry-funded investigators, along with measures of cynicism, moral disengagement, compliance disengagement, impulsivity, work stressors, knowledge of responsible conduct of research (RCR), and socially desirable response tendencies. Negative associations were found for the PDR and measures of cynicism, moral disengagement, and compliance disengagement, while positive associations were found for the PDR and RCR knowledge and positive urgency, an impulsivity subscale. PDR scores were not related to socially desirable responding, or to measures of work stressors and the remaining impulsivity subscales. In a multivariate logistic regression analysis, lower moral disengagement scores, higher RCR knowledge, and identifying the United States as one’s nation of origin emerged as key predictors of stronger performance on the PDR. The implications of these findings for understanding the measurement of decision-making in research and future directions for research and RCR education are discussed. 相似文献