全文获取类型
收费全文 | 5595篇 |
免费 | 186篇 |
国内免费 | 3篇 |
专业分类
管理学 | 577篇 |
民族学 | 32篇 |
人才学 | 2篇 |
人口学 | 501篇 |
丛书文集 | 39篇 |
理论方法论 | 501篇 |
综合类 | 100篇 |
社会学 | 2726篇 |
统计学 | 1306篇 |
出版年
2023年 | 55篇 |
2022年 | 25篇 |
2021年 | 37篇 |
2020年 | 103篇 |
2019年 | 180篇 |
2018年 | 166篇 |
2017年 | 266篇 |
2016年 | 167篇 |
2015年 | 134篇 |
2014年 | 169篇 |
2013年 | 1142篇 |
2012年 | 211篇 |
2011年 | 171篇 |
2010年 | 122篇 |
2009年 | 140篇 |
2008年 | 145篇 |
2007年 | 136篇 |
2006年 | 119篇 |
2005年 | 125篇 |
2004年 | 113篇 |
2003年 | 93篇 |
2002年 | 129篇 |
2001年 | 116篇 |
2000年 | 98篇 |
1999年 | 108篇 |
1998年 | 91篇 |
1997年 | 79篇 |
1996年 | 65篇 |
1995年 | 85篇 |
1994年 | 67篇 |
1993年 | 71篇 |
1992年 | 68篇 |
1991年 | 72篇 |
1990年 | 81篇 |
1989年 | 66篇 |
1988年 | 46篇 |
1987年 | 47篇 |
1986年 | 52篇 |
1985年 | 56篇 |
1984年 | 59篇 |
1983年 | 45篇 |
1982年 | 40篇 |
1981年 | 39篇 |
1980年 | 42篇 |
1979年 | 50篇 |
1978年 | 38篇 |
1977年 | 27篇 |
1976年 | 24篇 |
1974年 | 25篇 |
1971年 | 22篇 |
排序方式: 共有5784条查询结果,搜索用时 15 毫秒
1.
Stephen J. Ruberg Frank E. Harrell Jr. Margaret Gamalo-Siebers Lisa LaVange J. Jack Lee Karen Price 《The American statistician》2019,73(1):319-327
ABSTRACTThe cost and time of pharmaceutical drug development continue to grow at rates that many say are unsustainable. These trends have enormous impact on what treatments get to patients, when they get them and how they are used. The statistical framework for supporting decisions in regulated clinical development of new medicines has followed a traditional path of frequentist methodology. Trials using hypothesis tests of “no treatment effect” are done routinely, and the p-value < 0.05 is often the determinant of what constitutes a “successful” trial. Many drugs fail in clinical development, adding to the cost of new medicines, and some evidence points blame at the deficiencies of the frequentist paradigm. An unknown number effective medicines may have been abandoned because trials were declared “unsuccessful” due to a p-value exceeding 0.05. Recently, the Bayesian paradigm has shown utility in the clinical drug development process for its probability-based inference. We argue for a Bayesian approach that employs data from other trials as a “prior” for Phase 3 trials so that synthesized evidence across trials can be utilized to compute probability statements that are valuable for understanding the magnitude of treatment effect. Such a Bayesian paradigm provides a promising framework for improving statistical inference and regulatory decision making. 相似文献
2.
3.
As important members of research teams, statisticians bear an ethical responsibility to analyze, interpret, and report data honestly and objectively. One way of reinforcing ethical responsibilities is through required courses covering a variety of ethics-related topics at the graduate level. We assessed ethics requirements for graduate-level statistics training programs in the United States for the 2013–2014 academic year using the websites of 88 universities, examining 103 biostatistics programs, and 136 statistics degree programs. We categorized programs’ ethics training requirements as required or not required. Thirty-one (35.1%) universities required an ethics course for at least some degree students. Sixty-two (25.5%) degree programs required an ethics course for at least some students. The majority (77.4%) of required courses were worth 0 or 1 credit. Of the 177 programs without an ethics requirement, 19 (10.7%) listed an ethics elective. Although a single ethics course is insufficient for instilling an ethical approach to science, degree programs that model expectations through coursework point to the value of ethics in science. More training programs should prepare statisticians to consider the ethical dimensions of their work through required coursework. Supplementary materials for this article are available online. 相似文献
4.
5.
Christopher Chase‐Dunn Peter Grimes Eugene N. Anderson 《Revue canadienne de sociologie》2019,56(4):529-555
An understanding of the current right‐wing national and transnational social movements can benefit from comparing them to the global and national conditions operating during their last appearance in the first half of the twentieth century and by carefully comparing twentieth‐century fascism with the neofascist and right‐wing populist movements that have been emerging in the twenty‐first century. This allows us to assess the similarities and differences, and to gain insights about what could be the consequences of the reemergence of populist nationalism and fascist movements. Our study uses the comparative evolutionary world‐systems perspective to study the Global Right from 1800 to the present. We see fascism as a form of capitalism that emerges when the capitalist project is in crisis. World historical waves of right‐wing populism and fascism are caused by the cycles of globalization and deglobalization, the rise and fall of hegemonic core powers, long business cycles (the Kondratieff wave), and interactions with both Centrist Liberalism and the Global Left. We consider how crises of the global capitalist system have produced right‐wing backlashes in the past, and how a future terminal crisis of capitalism could lead to a reemergence of a new form of authoritarian global governance or a reorganized global democracy in the future. 相似文献
6.
This study replicated and extended previously reported sex differences involving both viewer and target in the recognition of threatening facial expressions. Based on the assumption that the evolved cognitive mechanisms mediating anger recognition would have been designed by natural selection to operate quickly in the interests of survival, brief tachistoscopic presentation of stimulus photographs was used. Additionally, in contrast to prior published studies, the statistical methods of signal detection research were used to control for the confounding effects of non-random guessing. The main hypothesis, that anger posed by males would be more accurately perceived than anger posed by females, was supported. A secondary hypothesis, that female-posed anger would be more accurately perceived by women than by men, received partial support. Testosterone levels, measured inferentially in terms of diurnal cycles, failed to show the hypothesized positive relationship to accuracy of anger perception. 相似文献
7.
Acculturative stress in the adjustment of immigrant families 总被引:1,自引:0,他引:1
Tania N. Thomas 《Journal of Social Distress and the Homeless》1995,4(2):131-142
This study reviews the issue of acculturative stress in immigrant families. Acculturative stress includes behaviors experienced by immigrants that are a direct consequence of the process of acculturation and adaptation to a new society. A number of stressors impacting on the acculturation of immigrant families is discussed. These stressors include lack of English language skills, employment and economic status, educational background, family life, and sociopolitical and immigration status. 相似文献
8.
Jacobs Ronald N. Glass Daniel J. 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2002,13(3):235-252
Media publicity is an important resource for contemporary voluntary associations, but very little is actually known about the resources and organizational characteristics that are most important for getting media attention. To address this question, we collected and analyzed data on the organizational attributes and news publicity of 739 nonprofit organizations in New York City. We find that an organization's income, paid staff, membership size, and library resources are significantly related to getting media publicity, whereas the number of chapter affiliations is inversely related to publicity. Association type is also a significant factor that influences an organization's ability to get publicity. We discuss the implications that these findings have for current debates about advocacy and civic engagement in the nonprofit sector. 相似文献
9.
10.
After reviewing the debate about public sociologies in the American Sociological Association over the past few years, we offer
a response to calls for “saving sociology” from the Burawoy approach as well as an analytic critique of the former ASA president's
“For Public Sociology” address. While being sympathetic to the basic idea of public sociologies, we argue that the “reflexive”
and “critical” categories of sociology, as Burawoy has conceptualized them, are too ambiguous and value-laden to allow for
empirical investigation of the different major orientations of sociological research and the ways the discipline can address
non-academic audiences. Debates about the future of sociology should be undertaken with empirical evidence, and we need a
theoretical approach that can allow us to compare both disciplines and nations as well as taking into account the institutional
context of the universities in which we operate. Research into the conditions under which professional, critical, policy,
and public sociologies could work together for the larger disciplinary and societal good is called for instead of overheated
rhetoric both for and against public sociologies. 相似文献