首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   5091篇
  免费   157篇
管理学   680篇
民族学   24篇
人口学   524篇
丛书文集   20篇
教育普及   1篇
理论方法论   488篇
综合类   59篇
社会学   2389篇
统计学   1063篇
  2023年   32篇
  2021年   50篇
  2020年   89篇
  2019年   117篇
  2018年   128篇
  2017年   194篇
  2016年   140篇
  2015年   82篇
  2014年   133篇
  2013年   783篇
  2012年   161篇
  2011年   145篇
  2010年   124篇
  2009年   110篇
  2008年   137篇
  2007年   127篇
  2006年   148篇
  2005年   112篇
  2004年   112篇
  2003年   76篇
  2002年   98篇
  2001年   131篇
  2000年   122篇
  1999年   132篇
  1998年   101篇
  1997年   86篇
  1996年   93篇
  1995年   68篇
  1994年   61篇
  1993年   87篇
  1992年   89篇
  1991年   97篇
  1990年   78篇
  1989年   78篇
  1988年   61篇
  1987年   68篇
  1986年   62篇
  1985年   75篇
  1984年   66篇
  1983年   69篇
  1982年   44篇
  1981年   40篇
  1980年   37篇
  1979年   47篇
  1978年   38篇
  1977年   33篇
  1976年   34篇
  1975年   32篇
  1974年   40篇
  1973年   29篇
排序方式: 共有5248条查询结果,搜索用时 921 毫秒
511.
Municipal day care services for children in Norway have experienced two important reforms: the introduction of the Kindergarten Act in 1975, and the introduction of preschools for 6-year-olds in 1991. Focusing on the relationship between environmental inputs and policy outcomes, this article attempts to identify characteristics influencing the propensity towards early provision of day care in the municipalities. Applying logistic regression, service-specific factors show the greatest importance, as opposed to more general municipal features. The political system, in terms of high female representation and low representation from the Christian Democratic Party, the Center Party, and the Progress Party in local councils, seems responsive to the proportion of children, the percentage of women working full time, and average net income per capita. The persisting importance of gender-specific variables is discussed – suggesting different interpretations of the results in relation to the feminization of politics.  相似文献   
512.
ABSTRACT

Within NZ gambling and its associated harms are well-researched topics. However, most studies to date have relied upon the use of survey methodology or have focused on individual regions. In this paper we distribute gaming machine proceeds (GMP) from gaming venues to the surrounding localities in order to derive estimates of GMP per capita. It is hoped these estimates will enable the trusts who operate the electronic gaming machines (EGMs), and who are responsible for reinvesting a proportion of proceeds back into the community, to more accurately target funding towards the areas most affected by the harms of EGM gambling. Our estimates of GMP per capita also provide a means of assessing the criterion validity of the recently developed Dynamic Deprivation Index. Furthermore, although it is well known that Māori and Pacific Island populations have a higher incidence of problem gambling, our results imply that when controlling for socio-economic deprivation and the geographic location of EGMs the associations between ethnicity and GMP per capita are weak. From a policy perspective, this suggests the most effective way of limiting the harms of EGM gambling on these populations is to place tighter controls on the number of venues within their communities.  相似文献   
513.
Workplace drug testing programs are often met with intense criticism. Despite resistance among labor and consumer groups and a lack of rigorous empirical evidence regarding effectiveness, drug testing programs have remained popular with employers throughout the 1990s and into the current century. The present study analyzed nationally representative data on over 15,000 US households to determine whether various types of workplace drug testing programs influenced the probability of drug use by workers. The study estimated several empirical specifications using both univariate and bivariate probit techniques. The specification tests favored the bivariate probit model over the univariate probit model. Estimated marginal effects of drug testing on any drug use were negative, significant, and relatively large, indicating that drug testing programs are achieving one of the desired effects. The results were similar when any drug use was replaced with chronic drug use in the models. These results have important policy implications regarding the effectiveness and economic viability of workplace anti-drug programs.  相似文献   
514.
Objectives. The purpose of this research is to examine differences in access to and sources of healthcare for working‐aged adults among major Hispanic subpopulations of the United States. Nativity, duration in the United States, citizenship, and sociodemographic factors are considered as key predictors of access to and sources of care. Methods. Using pooled National Health Interview Surveys from 1999–2001, logistic and multinomial logistic regression models are estimated that compare Mexican Americans, Puerto Ricans, Cuban Americans, and other Hispanics with non‐Hispanic blacks and non‐Hispanic whites. Results. Mexican Americans, Puerto Ricans, and other Hispanics display significantly less access to care than non‐Hispanics whites, with immigrant status and socioeconomic status variables accounting for some, but not all, of the differences. For sources of care, Mexican‐American, Puerto Rican, and other Hispanic adults were all much more likely than non‐Hispanic whites to report clinics or emergency rooms as their source of regular care. Conclusions. There are wide differences in access to and sources of care across racial and ethnic groups in the United States. Mexican‐American adults, regardless if born in Mexico or the United States, appear to be most in need of access to regular and high‐quality care. Naturalization may be an especially important factor in greater access to regular and high‐quality care for Hispanic immigrants.  相似文献   
515.
Policy-makers in social services in Finland: the municipality and the state   总被引:1,自引:0,他引:1  
Finland has been a latecomer in its development of social services. Nevertheless, during the 1970s and 1980s, it constructed a wide-ranging system of social services. This is a result of cooperation, but also of inter-administrational struggle between central and local government. The provision of Finnish social services has been the responsibility of self-governing local municipalities, although it is subsidized and controlled by the state. The proportion of state financing has increased remarkably during the last decades, but the municipalities still finance half of their social service expenditure themselves. The economic recession of the 1990s has led to a restructuring of the Finnish model of social services, but local government will evidently remain at the center of decision-making on social service provision.  相似文献   
516.
Objectives . Property rights are central to debates about natural resource policy. Governments traditionally have been seen as the appropriate custodians of natural resources for their citizens. More recently, many argue the privatization of property rights will ensure that users have incentives to manage their resources well. Common property, to the extent it is discussed at all, is seen as leading to the tragedy of the commons. We evaluate these claims by assessing property rights and forest conditions in two private and three communal forests in Guatemala. Methods . Data on biological and social phenomena from five forests (151 plots) and their associated communities were collected using the International Forestry Resources and Institutions Research Program protocols. Ordinary least squares regression was used to analyze four models. We examined t -scores for differences in coefficients for the different models. Results . The models demonstrate that de jure property rights are not a powerful predictor of variations among the sampled forests. Conclusions . We argue that de facto institutions and their enforcement are much more important than de jure property rights to forest management. Communities holding a forest in common can, under certain circumstances, create institutions to manage their resources as successfully as—or more successfully than—private owners.  相似文献   
517.
The study explicates a competency-based model of contemporary social work management practice and compares this model with frameworks derived from earlier studies. Using a purposive sample of 184 social work managers throughout the country, an exploratory factor analysis yielded twelve sets of competencies required of today's social work manager. A comparison of the present model to earlier management frameworks reveals that substantive changes in the nature, scope, complexity, and priorities assigned to management competencies and skills have transformed the role of the social work manager over the last decade. Implications for social work manager education are reviewed and future research directions are proposed.  相似文献   
518.
Similarity and preferences in the space of simple lotteries   总被引:1,自引:1,他引:1  
A. Rubinstein's similarity-relation approach to decision making under uncertainty is extended by introducing a new concept of correlated similarity relations. It is shown that every expected utility preference is consistent with the -difference similarity relation on the prize space and some correlated similarity relations on the probability space, and that a similarity relation on the prize space and correlated similarity relations on the probability space overdetermine the preference (in A. Rubinstein's sense).Earlier versions were presented at the Edwin Smart Symposium on Games and Economic Behavior, Ohio State University, 1989, the ESEM 1989 Meeting, the EEA 1989 Meeting, the Workshop on Rational and Boundedly Rational Principles of Strategic Behavior, Universität Bielefeld, 1989, and the ASSET 1991 Meeting. We wish to thank the comments received from the participants in those meetings and the stimulating suggestions of S. Ch. Kolm, R. D. Luce, and an anonymous referee. Financial support from the Universidad del Pais Vasco-Euskal Herriko Unibertsitatea, DGCYT (PS 87-0039) and Gobierno de Navarra are gratefully acknowledged.  相似文献   
519.
520.
This paper is a preliminary inquiry into the nature of implication; how things are seen as 'going together' or following one from another. The argument presented here is that implication is non-logical and is central to the routine process of reason, induction and generalization. The organizing force underlying implication and practical inference is argued to be Von Domarus' Principle (VDP), by which similarity on some dimension of interest 'carries over' to some other dimension of interest.
One major difficulty with this formulation is that where VDP is the only organizing force, incoherent utterances resembling the word salad of the schizophrenic are likely to result, quite a departure from the routine utterances of normals that a useful model should generate. Two important ways that normal speech and word salad differ are that, in the latter, associations are, first, often implausible or bizarre, and second, they are likely to be so personalistic as to be virtually inaccessible to others.
These considerations led to a search for elements that would provide the corrections necessary to bring the products of a VDP based model of implication close to normal utterances in these two areas. One element that appears central, concerns the role of subjective probability in evaluating plausibility of associations. Also considered are aspects of ambiguities in ordinary language especially concerning number and probability. The problem of making associations accessible to others is mitigated by providing elements in the setting or the communication itself that act to highlight or salience the association intended to be communicated. Finally, suggestions for further research are presented.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号