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:      
  示例: 沙坡头地区,人工植被区,变化  检索词用空格隔开表示必须包含全部检索词,用“,”隔开表示只需满足任一检索词即可!
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   5902篇
  免费   32篇
管理学   941篇
民族学   31篇
人才学   3篇
人口学   544篇
丛书文集   38篇
理论方法论   688篇
综合类   48篇
社会学   2900篇
统计学   741篇
  2024年   31篇
  2023年   23篇
  2020年   96篇
  2019年   118篇
  2018年   92篇
  2017年   136篇
  2016年   146篇
  2015年   104篇
  2014年   145篇
  2013年   944篇
  2012年   176篇
  2011年   163篇
  2010年   138篇
  2009年   154篇
  2008年   164篇
  2007年   164篇
  2006年   153篇
  2005年   191篇
  2004年   218篇
  2003年   181篇
  2002年   192篇
  2001年   148篇
  2000年   114篇
  1999年   129篇
  1998年   117篇
  1997年   101篇
  1996年   88篇
  1995年   93篇
  1994年   91篇
  1993年   102篇
  1992年   77篇
  1991年   85篇
  1990年   61篇
  1989年   59篇
  1988年   69篇
  1987年   51篇
  1986年   52篇
  1985年   64篇
  1984年   57篇
  1983年   56篇
  1982年   62篇
  1981年   49篇
  1980年   49篇
  1979年   47篇
  1978年   45篇
  1977年   44篇
  1976年   44篇
  1975年   43篇
  1974年   33篇
  1973年   29篇
排序方式: 共有5934条查询结果,搜索用时 15 毫秒
151.
The introduction of the Quality Protects initiative in Englandand the focus on performance management has challenged socialservices departments to examine the systems, processes and outcomesfor children who have their name on a child protection register.Research indicates that approximately one-quarter of the situationsin which children are registered could be described as chronic—thatis, they remain on the child protection register for significantperiods of time, experience more than one period of registrationor suffer a further incident of significant harm whilst subjectto a child protection plan. In this article, the findings froma research study conducted into this group of vulnerable childrenare reported, focusing on the characteristics of the childrenand their families, and their careers in the child protectionsystem. The paper concludes with observations about the weakconceptualization of performance management and the need torecognize the complexity of the factors that influence children’scareers in the child protection system.  相似文献   
152.
Working in corrections is not only a demanding job, but a socially important one. While a growing number of studies have examined how the work environment impacts the job stress, job satisfaction, and organizational commitment of staff, very few studies have examined how working in corrections impacts the life satisfaction of workers. The current study utilized OLS regression to examine the antecedents of life satisfaction among staff at a Midwestern private prison. Job satisfaction had a positive relationship with life satisfaction, while age, work on family conflict, family on work conflict, and job involvement all had statistically significant negative effects. Finally, perceptions of the level of financial rewards, job stress, organizational commitment, gender, race, educational level, tenure, supervisory status, position, marital status, and having children, all had non-significant associations with overall satisfaction with life.  相似文献   
153.
This study describes the implementation of three evidence-based treatments addressing traumatic stress symptoms within a wraparound foster care program in Illinois. Child–Parent Psychotherapy (CPP), Trauma-Focused Cognitive Behavioral Therapy (TF-CBT), and Structured Psychotherapy for Adolescents Responding to Chronic Stress (SPARCS) were implemented with a racially diverse sample of youth ages 3–18 at six agencies. Culturally sensitive adaptations were made to treatment approaches to improve client retention and outcomes. Data analyses revealed no racial differences in retention in the program and no differences in outcomes between minority youth exposed to the intervention and other participants. All three evidence-based treatments were effective in reducing symptoms and improving functioning among minority youth. Implementation issues, including challenges and culturally competent accommodations, are discussed.  相似文献   
154.
The anthropology of development seeks to understand the complex encounter between international and national development regimes and local patterns of livelihood and being. As science and development move objects, at once material and discursive, through the networks of the social to reach “impoverished” others, local groups reach out to development actors to evaluate and appropriate their resources and accept or redirect those efforts. In a political interplay of disciplinary measures and localizing translations, development projects are re-invented, or aspects thereof refused, just as development actors strain to keep projects on track. With input from science and technology studies, this article explores the participatory, authoritative, and distributive dimensions to agricultural development in East Timor. Across four cases studies—a dairy, a greenhouse, a seed development program, and a permanent farming initiative—the politics of projects are compared and discussed within the broader context of colonial and postcolonial development. The article is based on a total of 1 year of fieldwork conducted in 2003, 2008, and 2009.  相似文献   
155.
We use a sample of CEO appointments at US corporations over the years 1992–2004 to test the 'glass cliff' hypothesis, which posits that females are appointed to leadership positions at firms that are in a precarious financial condition. Our analysis utilizes three measures of stock-price-based financial performance and two distinct control samples of appointments of males to the CEO position. We find that corporate performance preceding CEO appointments tends to favor females, implying that females (males) are appointed to the CEO position largely at times when the firm is in relatively better (worse) financial health. Disaggregating the data by appointments in up versus down markets, at high-risk versus low-risk firms, and by calendar time yield similar conclusions. There appears to be no glass cliff facing female CEOs at US firms. Our findings suggest a need for additional research to identify where and for what types of positions this phenomenon is prevalent.  相似文献   
156.
    
Foresight is increasingly being institutionalized and used in science, technology and innovation (STI) policy processes around the world. Foresight is a toolbox to help decision-makers generate intelligence about future scientific and technological advances and to frame long-term STI policy goals and rationales. Foresight can be used to inform policy to steer research and innovation (R&I) towards attaining sustainable development goals. Yet, foresight is not institutionalized and used in sub-Saharan Africa (SSA) at a time when many governments are formulating new STI policies and some of their science granting councils (SGCs) are setting R&I priorities.  相似文献   
157.

Motivated by a breast cancer research program, this paper is concerned with the joint survivor function of multiple event times when their observations are subject to informative censoring caused by a terminating event. We formulate the correlation of the multiple event times together with the time to the terminating event by an Archimedean copula to account for the informative censoring. Adapting the widely used two-stage procedure under a copula model, we propose an easy-to-implement pseudo-likelihood based procedure for estimating the model parameters. The approach yields a new estimator for the marginal distribution of a single event time with semicompeting-risks data. We conduct both asymptotics and simulation studies to examine the proposed approach in consistency, efficiency, and robustness. Data from the breast cancer program are employed to illustrate this research.

  相似文献   
158.
埃德加·莫兰的复杂性思想主体包括三大理论:建立在有序性与无序性统一基础上的自组织理论、建立在整体与部分相互决定基础上的多样性理论以及建立在主客体相整合基础上的自我反思理论.莫兰的复杂性思想与"简单范式"针锋相对,自然构成了时以"简单范式"为基础的人类学的批判.本文以人类学研究的某些方面,如研究主体、文化的整体性、观察角度、价值取向、工作思路、研究态度以及研究角色等为例,进行了评析.  相似文献   
159.
The effects of question order on respondents' ratings of general and specific aspects of community life were assessed using data from separate mail surveys in Montana and Pennsylvania, The samples differed in locale, composition, and size and the relevant questions varied in number, format, and specific focus. Nevertheless, for both data sets the general question was more likely to be answered and more likely to receive positive responses when it was asked after—rather than before—the specific questions. There was some indication that carryover from the specific items to the general question responses were somewhat greater for those questions asked most recently and less for those asked earlier. Implications of these findings are discussed.  相似文献   
160.
Abstract Past research suggests that mail surveys encourage a primacy effect, which is a tendency to choose the first answers from a list, whereas telephone surveys encourage a recency effect, a tendency to choose the last answers from a list. This paper summarizes results from 82 new experiments conducted in 12 separate surveys in seven states. Only four of 33 mail survey comparisons exhibited significant primacy effects, while five of 26 experiments in telephone surveys exhibited recency effects. In addition, only three of 23 cross-method comparisons produced a significant primacy/recency effect in the expected manner. The conclusion is that the prevalence of primacy and recency effects has been over-estimated by past research and a new theoretical approach that takes into account multiple causation is needed for examining these effects.  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