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   6883篇
  免费   155篇
管理学   954篇
民族学   35篇
人才学   6篇
人口学   650篇
丛书文集   28篇
理论方法论   596篇
现状及发展   1篇
综合类   75篇
社会学   3274篇
统计学   1419篇
  2023年   41篇
  2021年   56篇
  2020年   105篇
  2019年   144篇
  2018年   162篇
  2017年   230篇
  2016年   156篇
  2015年   116篇
  2014年   139篇
  2013年   1204篇
  2012年   253篇
  2011年   204篇
  2010年   147篇
  2009年   141篇
  2008年   173篇
  2007年   167篇
  2006年   158篇
  2005年   154篇
  2004年   146篇
  2003年   112篇
  2002年   151篇
  2001年   163篇
  2000年   129篇
  1999年   146篇
  1998年   118篇
  1997年   112篇
  1996年   94篇
  1995年   101篇
  1994年   109篇
  1993年   86篇
  1992年   101篇
  1991年   95篇
  1990年   101篇
  1989年   93篇
  1988年   102篇
  1987年   95篇
  1986年   84篇
  1985年   103篇
  1984年   80篇
  1983年   84篇
  1982年   81篇
  1981年   76篇
  1980年   67篇
  1979年   84篇
  1978年   69篇
  1977年   53篇
  1976年   70篇
  1975年   66篇
  1974年   40篇
  1973年   38篇
排序方式: 共有7038条查询结果,搜索用时 31 毫秒
101.
Caught between their child and doing the right thing, families of chronic juvenile delinquents often experience a series of injustices in the name of justice. Attempts by the system to correct the delinquency problem often result in the imposition of values and beliefs that negate the family's values, experiences and meanings of their child's behavior. The Ecosystemic Natural Wrap-around (E.N.W.) model attempts to respectfully account for the many influences that maintain problematic interactions, both internal and external, in the nuclear family of chronic juvenile delinquents. The model focuses on a variety of interventions at different levels and contexts, building on the strengths of the family, using the extended family and fictive kin networks, and clarifying the meanings associated with problematic behavior for the multiple players. The model proposed is an integrative theoretical approach, emphasizing systems theory and constructivism.  相似文献   
102.
103.
The Community Prevention Trial was 5-year effort to reduce alcohol-involved injuries and death through a comprehensive program of community awareness and policy activities. The three experimental communities were of approximately 100,000 population each (one in Northern California, one in Southern California, and one in South Carolina). Matched comparison communities were used for each experimental community. This article describes the evaluation approach used in a program that sought to change environmental factors not a specific population or target group. This approach demanded unique evaluation approaches for determining overall community aggregate effects, that is, distal outcomes, as well as changes in key mediating variables, that is, process effects. The problem of trending and lagged effects of community prevention programs are discussed.  相似文献   
104.
This article provides recommendations and observations about evaluation of a locally based prevention project to reduce problems at a total community or aggregate level. The shift from targeting specific individuals or subpopulations to the overall structure and environment of a community is most demanding. Evaluation tools and analysis techniques have lagged behind program development because community-level interventions are not linked to a specific target group who can be separately studied. Thus assumptions about using random assignment and/or comparison communities as means to control for confounding variables are weakened when the unit of analysis is the community itself and dependent measures are subject to trending and the effects of history.  相似文献   
105.
106.
107.
108.
109.
Using data from the 1984 panel of the Survey of Income and Program Participation (SIPP), this article examines characteristics of the older population disaggregated by net-worth quintiles. The authors argue that income is not a sufficient measure of economic status for current policy discussions on issues such as changing Medicare co-payments, increasing the taxation of social security benefits, or means-testing under Medicaid. Net worth is a better measure of economic status, particularly for the elderly, because it represents the net value of assets accumulated over the life course. Their results indicate that there is considerable diversity in the economic status of the older population, which is masked by aggregate statistics (such as means and medians) typically used to summarize the economic status of population groups. Stereotypical views of the elderly based on such aggregates result in misdirected policy formulation. In the future, policymakers will need to formulate policies and programs using information on the distributions of income and assets among the older populations rather than relying on statistical aggregates.  相似文献   
110.
Little is known about why nonprofits accrue debt, how much they owe, and whether the funds they borrow are used productively. This article distinguishes between productive, problematic, and deferred debt. Employing a data base representative of 114,726 tax-filing charitable nonprofits in the United States in 1986, it examines the pervasiveness of nonprofit debt and the relation between this debt and nonprofit financial health. The analysis finds that over 70 percent of the nonprofits hold debt, the distribution of this debt is highly concentrated, and the level of debt and leverage varies with asset size and type of activity. Nonprofits with higher leverage and absolute debt levels are financially healthier than those with lower levels. While the analysis does not determine whether financially stronger nonprofits are better able to borrow, the results support the view that borrowing in the nonprofit sector is economically efficient.  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