全文获取类型
收费全文 | 16143篇 |
免费 | 239篇 |
国内免费 | 2篇 |
专业分类
管理学 | 2401篇 |
民族学 | 79篇 |
人口学 | 1447篇 |
丛书文集 | 56篇 |
理论方法论 | 1256篇 |
综合类 | 233篇 |
社会学 | 6843篇 |
统计学 | 4069篇 |
出版年
2023年 | 94篇 |
2021年 | 96篇 |
2020年 | 239篇 |
2019年 | 343篇 |
2018年 | 451篇 |
2017年 | 601篇 |
2016年 | 441篇 |
2015年 | 291篇 |
2014年 | 419篇 |
2013年 | 2815篇 |
2012年 | 533篇 |
2011年 | 502篇 |
2010年 | 369篇 |
2009年 | 377篇 |
2008年 | 366篇 |
2007年 | 395篇 |
2006年 | 383篇 |
2005年 | 374篇 |
2004年 | 333篇 |
2003年 | 298篇 |
2002年 | 336篇 |
2001年 | 416篇 |
2000年 | 387篇 |
1999年 | 352篇 |
1998年 | 254篇 |
1997年 | 241篇 |
1996年 | 224篇 |
1995年 | 193篇 |
1994年 | 238篇 |
1993年 | 191篇 |
1992年 | 263篇 |
1991年 | 244篇 |
1990年 | 219篇 |
1989年 | 206篇 |
1988年 | 176篇 |
1987年 | 173篇 |
1986年 | 180篇 |
1985年 | 187篇 |
1984年 | 201篇 |
1983年 | 188篇 |
1982年 | 164篇 |
1981年 | 130篇 |
1980年 | 140篇 |
1979年 | 152篇 |
1978年 | 135篇 |
1977年 | 127篇 |
1976年 | 104篇 |
1975年 | 115篇 |
1974年 | 95篇 |
1973年 | 85篇 |
排序方式: 共有10000条查询结果,搜索用时 10 毫秒
71.
72.
Regina Thompson Paul H. Templet John K. Gamman Scott T. McCleary Margaret A. Reams 《Risk analysis》1994,14(5):857-861
The goal of Louisiana's 1990–1991 comparative risk project, also called the Louisiana Environmental Action Plan (LEAP), was to incorporate risk assessment into state environmental planning and policymaking. Scientists, government officials, and citizens were brought together to estimate the relative risk to human health, natural resources, and quality of life posed by 33 selected environmental issues. The issues were then ranked according to their relative estimated risks. It was hoped that this ranking of "comparative risks" would enable state policymakers to target the most important environmental problems and allocate scarce public resources more rationally and efficiently. As a result of the project, the governor issued an Executive Order forming a permanent Public Advisory Committee to continue this type of comparative risk assessment in Louisiana. 相似文献
73.
As the number of individuals and families impacted by AIDS continue to multiply, family therapists will increasingly be asked to become engaged in the challenge of caring for those affected. To date, little has been written in family therpy journals regarding the response of family therapists to this crisis. This paper represents an initial attempt to examine the atitudes of clinical members of the American Association for Marriage and Family Therapy toward AIDS and persons with AIDS. Included in the study are data regarding the therapists' contact with persons with AIDS, gays, and lesbians, and the impact of such contact on attitudes. Implications for future research, training, and treatment of those affected by AIDS are also provided. 相似文献
74.
This is an analysis of the social context of normal police lies. We define lies as speech acts which the speaker knows are misleading or false, are intended to deceive, and where evidence to the contrary is known to the observer. Lies are relative to a moral context, and what an audience will accept. Lies include excuses, which deny full responsibility for an act, but acknowledge its immorality, and justifications, which accept responsibility but deny blame-worthiness. Police learn to lie and to carefully distinguish normal (or acceptable) lies from unacceptable lies, suggesting that lies are a part of a negotiated occupational order. We show how and why some types of lies are rewarded by police using ethnographic data from an 18 month field study of a large urban force. Lies can be of little issue, or become troublesome. We report and analyze two kinds of troublesome lies: case lies, recognized stories an officer utilizes in a courtroom or on paper to facilitate the conviction of a suspect, and cover stories, lies an officer tells in court, to supervisors, and on the job with the aim of providing a verbal shield or mitigation in the event of discipline. Both excuses and justifications are woven together in these vignettes. An example of a refusal to lie is used to illustrate some of the limits on lying as well organizational factors in lying. Some implications for official lying are also noted. 相似文献
75.
76.
77.
A Bayesian approach is presented for detecting influential observations using general divergence measures on the posterior distributions. A sampling-based approach using a Gibbs or Metropolis-within-Gibbs method is used to compute the posterior divergence measures. Four specific measures are proposed, which convey the effects of a single observation or covariate on the posterior. The technique is applied to a generalized linear model with binary response data, an overdispersed model and a nonlinear model. An asymptotic approximation using Laplace method to obtain the posterior divergence is also briefly discussed. 相似文献
78.
The mean density of bacteria in a water body is commonly monitored using quantal assay. This paper describes the use of local scoring in estimating the spatial distribution of mean density from quantal assay results at a set of point locations. An application to estimating the mean density of fecal conform bacteria in a coastal pond is presented. Model diagnostics based on a parametric bootstrap are also presented. 相似文献
79.
80.
Given the fragmented structure of child‐care assistance in the United States, it has been difficult to obtain accurate estimates of which families are assisted, through which mechanisms, and at what level. Making use of survey data from New York City, we analyze the distribution of several forms of public child‐care assistance. Results suggest that about 40% of all families with young children receive some form of child‐care assistance. Considering all forms of assistance, the distribution of child‐care help is targeted in both expected and some unexpected ways. Implications of these results are discussed in the context of U.S. child‐care policies governing access and benefit levels. 相似文献