全文获取类型
收费全文 | 817篇 |
免费 | 40篇 |
国内免费 | 1篇 |
专业分类
管理学 | 75篇 |
民族学 | 6篇 |
人才学 | 1篇 |
人口学 | 158篇 |
丛书文集 | 7篇 |
理论方法论 | 96篇 |
综合类 | 6篇 |
社会学 | 437篇 |
统计学 | 72篇 |
出版年
2023年 | 9篇 |
2022年 | 4篇 |
2021年 | 12篇 |
2020年 | 24篇 |
2019年 | 33篇 |
2018年 | 43篇 |
2017年 | 33篇 |
2016年 | 41篇 |
2015年 | 35篇 |
2014年 | 31篇 |
2013年 | 125篇 |
2012年 | 40篇 |
2011年 | 29篇 |
2010年 | 32篇 |
2009年 | 15篇 |
2008年 | 13篇 |
2007年 | 24篇 |
2006年 | 24篇 |
2005年 | 36篇 |
2004年 | 30篇 |
2003年 | 18篇 |
2002年 | 14篇 |
2001年 | 9篇 |
2000年 | 10篇 |
1999年 | 9篇 |
1998年 | 6篇 |
1997年 | 12篇 |
1996年 | 12篇 |
1995年 | 10篇 |
1994年 | 7篇 |
1993年 | 6篇 |
1992年 | 8篇 |
1991年 | 5篇 |
1989年 | 8篇 |
1988年 | 7篇 |
1986年 | 9篇 |
1985年 | 8篇 |
1984年 | 4篇 |
1983年 | 6篇 |
1982年 | 8篇 |
1980年 | 5篇 |
1979年 | 7篇 |
1978年 | 3篇 |
1977年 | 3篇 |
1976年 | 4篇 |
1975年 | 2篇 |
1974年 | 6篇 |
1972年 | 4篇 |
1971年 | 4篇 |
1969年 | 2篇 |
排序方式: 共有858条查询结果,搜索用时 15 毫秒
111.
Objective. Using Poisson‐based negative binomial regression, we estimate the effect of neighborhood factors on homicides in two cities (San Antonio, Texas and San Diego, California) that have large Mexican‐origin populations. Methods. Three independent data sources (official homicide police reports, medical examiner records, and the U.S. Census) are used to construct the dependent homicide, and independent neighborhood, variables. Census tracts represent the unit of analysis, which serve as a proxy for neighborhoods. Given the spatial nature of the data, spatial estimation procedures were also modeled. Results. Spatial proximity to violence, neighborhood disadvantage, and affluence (in San Antonio) consistently buffered homicide across neighborhoods, even in heavily populated Latino neighborhoods. Conclusions. Spatial embeddedness and neighborhood characteristics are important for improving our understanding about ethnic neighborhood variations in levels of violence. Comparative approaches across places, namely, Latino‐dominated cities, can yield considerable insight into how the local context intersects race/ethnicity and violent crime. 相似文献
112.
113.
114.
The most serious problem facing the United States, accordingto many scientific and political leaders, is the threat of nuclearwar. Yet the standard survey question on the most importantproblem facing the country has often shown little public concurrencewith this assumption. Our article uses experimentation in nationalsamples to test whether this difference can be traced to limitationsin either the form or the wording of the standard question.The results indicate that there are some important systematicdifferences between open and closed versions of the question,and also differences that result from reference to the nationas distinct from the world, but neither type of difference accountsfor the infrequent mention of nuclear war on the standard question.Instead, other evidence indicates that most Americans believethat nuclear war is not going to happen at all, or that if itdoes happen it will be too far in the distant future to be ofpressing concern to them personally. 相似文献
115.
116.
Risk assessments for carcinogens are being developed through an accelerated process in California as a part of the state's implementation of Proposition 65, the Safe Drinking Water and Toxic Enforcement Act. Estimates of carcinogenic potency made by the California Department of Health Services (CDHS) are generally similar to estimates made by the U.S. Environmental Protection Agency (EPA). The largest differences are due to EPA's use of the maximum likelihood estimate instead of CDHS' use of the upper 95% confidence bounds on potencies derived from human data and to procedures used to correct for studies of short duration or with early mortality. Numerical limits derived from these potency estimates constitute "no significant risk" levels, which govern exemption from Proposition 65's discharge prohibition and warning requirements. Under Proposition 65 regulations, lifetime cancer risks less than 10(-5) are not significant and cumulative intake is not considered. Following these regulations, numerical limits for a number of Proposition 65 carcinogens that are applicable to the control of toxic discharges are less stringent than limits under existing federal water pollution control laws. Thus, existing federal limits will become the Proposition 65 levels for discharge. Chemicals currently not covered by federal and state controls will eventually be subject to discharge limitations under Proposition 65. "No significant risk" levels (expressed in terms of daily intake of carcinogens) also trigger warning requirements under Proposition 65 that are more extensive than existing state or federal requirements. A variety of chemical exposures from multiple sources are identified that exceed Proposition 65's "no significant risk" levels. 相似文献
117.
Previous research generally has supported multiple discrepancies theory (MDT) of the processes by which individuals arrive at judgments of satisfaction with various aspects of their lives as well as with life overall. However, the nature of possible causal relationships between overall and life facet satisfaction has been ignored. The purpose of this study was to extend MDT by testing alternative theoretical models which specified Bottom-up, Top-Down, and Bidirectional relationships between overall life satisfaction and satisfaction with 11 life facets in a sample of 1354 U.S. college students. Results most strongly favored the Bidirectional model in which the overall — life facet satisfaction relationship varied across life domains. The need to identify boundary conditions which determine the direction of the overall — life facet satisfaction relationship is discussed. 相似文献
118.
In longshoring, technological change, expanding competition among ports, and the development of lower cost work forces induced
a major restructuring of dock operations. This paper focuses on collective bargaining responses to environmental change and
the interplay between those responses, government intervention, the law, and market forces. Four coastal regions in the United
States and Canada are studied to gain a broad perspective in two jurisdictions with somewhat differing approaches to government
intervention and labor law. Market pressures have become a dominant force, altering the need for and nature of government
intervention, and accommodation to change seems most appropriate in today’s highly competitive marketplace.
We are indebted to those we interviewed: Brian Ciccozzi, D. P. (Don) Garcia, Terry Lane, Arnold E. Masters, Gene Vrana, Greg
Storey, Joe Weiler, and R. V. Wilds. We greatly appreciate the comments of Vitor Marciano, Yoni Reshef, and an anonymous referee,
as well as the support of the Social Sciences and Humanities Research Council and the Rice Fellowship.
I thank the Oakland University Research Committee for grant support. 相似文献
119.
Alwin Duane F.; Felson Jacob L.; Walker Edward T.; Tufis Paula A. 《Public opinion quarterly》2006,70(4):530-564
The purpose of this article is to acquaint the broader publicopinion research audience with what has been a salient issuewithin the community of scholars of religion. We address thequestion of how best to conceptualize and measure religiousidentities in research on contemporary American society. Weconsider the main approaches to the measurement of religiousidentification with regard to their backgrounds, their assumptionsabout the importance of understanding religious identities inhistorically relevant terms, and the practical considerationsof survey measurement. Using data from the General Social Survey,particularly recent innovative efforts to obtain informationon subjective association with particular religious traditionsand/or movements (e.g., Pentecostal, fundamentalist, evangelical,mainline, or liberal Protestant), we compare the two main approaches:the traditional "denominational" approach, where religious identitiesare assumed to be associated with religious denominations, andthe subjective approach, where religious identities are assumedto be captured by a set of "nondenominational" reference categorieslinked to particular historical religious traditions or socialmovements. We conclude that both approaches have substantialpredictive validity, and the most effective strategy for futureresearch may be one that uses a combination of approaches, ratherthan one that relies entirely on a single method of measurement. 相似文献
120.
This work investigates the robustness of optimal decision rules under a changing size of a decision group where the competence of one member is outstanding while the others possess an identical competence. More specifically, we focus on the expert rule, the almost expert rule and the tie-breaking chairperson rule. We first establish criteria for the optimality of each of these rules and then use it to investigate their robustness. Robustness is an important property of decision rules, especially when cost of adjustment to a new rule is high. Our findings are that the expert rule and the chairperson rule are robust while the almost expert rule is not.
相似文献
Drora KarotkinEmail: |