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   2973篇
  免费   65篇
管理学   343篇
民族学   18篇
人才学   1篇
人口学   252篇
丛书文集   11篇
理论方法论   374篇
综合类   27篇
社会学   1687篇
统计学   325篇
  2023年   20篇
  2022年   13篇
  2021年   27篇
  2020年   48篇
  2019年   84篇
  2018年   76篇
  2017年   110篇
  2016年   118篇
  2015年   72篇
  2014年   75篇
  2013年   449篇
  2012年   131篇
  2011年   131篇
  2010年   81篇
  2009年   95篇
  2008年   88篇
  2007年   125篇
  2006年   130篇
  2005年   108篇
  2004年   84篇
  2003年   85篇
  2002年   79篇
  2001年   71篇
  2000年   52篇
  1999年   64篇
  1998年   42篇
  1997年   30篇
  1996年   41篇
  1995年   28篇
  1994年   45篇
  1993年   25篇
  1992年   29篇
  1991年   27篇
  1990年   24篇
  1989年   28篇
  1988年   28篇
  1987年   20篇
  1986年   30篇
  1985年   22篇
  1984年   17篇
  1983年   22篇
  1982年   18篇
  1981年   14篇
  1980年   20篇
  1979年   24篇
  1978年   21篇
  1977年   8篇
  1976年   14篇
  1975年   7篇
  1974年   10篇
排序方式: 共有3038条查询结果,搜索用时 15 毫秒
81.
Population Research and Policy Review - Few studies of disparities consider logistical hurdles faced by adults with obesity in obtaining needed healthcare. This study compared adults with obesity...  相似文献   
82.
Steven Martin 《Demography》2009,46(1):203-208
This analysis joins the debate on how declines in marriage have shifted the composition of the unmarried and married populations in the United States, and how compositional shifts have affected nonmarital birth rates. Gray, Stockard, and Stone (2006) presented one model for compositional effects that Ermisch (2009) challenged with alternative statistical tests. I propose an alternative model for compositional shifts based not on theory but on observed marriage and fertility patterns. The results from this alternative model are consistent with Ermisch’s findings yet support Gray et al.’s general case that compositional effects have had an important infiuence on nonmarital birth rates.  相似文献   
83.
84.

Literaturbesprechungen

Soziologische Theorie, Handlungstheorie, Methoden, Familiensoziologie, Sozialstrukturanalyse, Raumsoziologie, Stadtsoziologie, Ged?chtnissoziologie, Religionssoziologie  相似文献   
85.
Replication strategies rely on the exploration of new knowledge. An important source of new knowledge is the transfer of unit level experience to headquarters, a process referred to as reverse knowledge flows. Such knowledge flows are fraught with difficulty as formal mechanisms often break down due to diverging business interests of unit and headquarters managers. This study brings together research on knowledge stickiness and autonomous action to provide a new avenue for understanding reverse knowledge flows. By drawing on an exploratory study of a franchise network, we provide an insight into how autonomous action reduces initiation stickiness but potentially increases implementation stickiness. Our analysis suggests that the role of autonomous action for reverse knowledge flows is moderated by unit managers’ resource expectations that emerge as a result of autonomous action. Exploring the interplay of autonomous action and knowledge stickiness provides new explanatory means for understanding reverse knowledge flows in replicator organizations.  相似文献   
86.
The influence of relational identification (RI) on leadership processes and the effects of social identity leadership on followers' responses to stress have received scant theoretical and research attention. The present research advances theoretical understanding by testing the assertion that high RI with the leader drives follower mobilization of effort and psychophysiological responses to stress. Two experimental scenario studies (Study 1 and Study 2) support the hypothesis that being led by an individual with whom followers perceive high RI increases follower intentional mobilization. Study 2 additionally showed that high (vs. low) RI increases follower resource appraisals and cognitive task performance. A laboratory experiment (Study 3) assessing cardiovascular (CV) reactivity showed that, compared to neutral (i.e., non-affiliated) leadership, being led by an individual with whom participants felt low RI elicited a maladaptive (i.e., threat) response to a pressurized task. In addition, relative to the low RI and neutral conditions, high RI with the leader did not engender greater challenge or threat reactivity. In conclusion, advancing social identity leadership and challenge and threat theory, findings suggest that leaders should be mindful of the deleterious effects (i.e., reduced mobilization and greater threat state) of low RI to optimize follower mobilization of effort and psychophysiological responses to stress.  相似文献   
87.
In this paper we study the m-clique free interval subgraphs. We investigate the facial structure of the polytope defined as the convex hull of the incidence vectors associated with these subgraphs. We also present some facet-defining inequalities to strengthen the associated linear relaxation. As an application, the generalized open-shop problem with disjunctive constraints (GOSDC) is considered. Indeed, by a projection on a set of variables, the m-clique free interval subgraphs represent the solution of an integer linear program solving the GOSDC presented in this paper. Moreover, we propose exact and heuristic separation algorithms, which are exploited into a Branch-and-cut algorithm for solving the GOSDC. Finally, we present and discuss some computational results.  相似文献   
88.
Few measures parallel the robust depth offered in the existing multidimensional and ecologically informed theories of resilience. This study sought to evaluate the test–retest reliability, construct, and predictive validity of the individual, family, and community resilience resource profile (IFCR-R). The IFCR-R measures a family’s access to resilience resources and protective factors across multiple ecological levels. Confirmatory factor analysis was used with a sample of n?=?810 low-income families. And 159 families completed multiple time point measures for test–retest reliability and predictive validity evaluation. Results of this study support the proposed multidimensional ecological structure of the IFCR-R and found that the IFCR-R offers an acceptable test–retest reliability and predictive validity for outcomes of mental and physical health.  相似文献   
89.
Objective: To examine the psychometric properties of a measure of cannabis-specific Protective Behavioral Strategies (PBS), which assesses ways in which students may reduce cannabis-related risk. Participants: Respondents to the American College Health Association – National College Health Assessment II (N = 580) during Spring 2015. Methods: Exploratory Factor Analysis (EFA) and Exploratory Structural Equation Modeling (ESEM) were used to identify and replicate the factor structure of the measure. Results: Results support a four-factor model (Respiratory Health, Frequency/Quantity, Socializing, and General Health) with close approximate fit (Χ2 (310) = 565.96, p < .001, RMSEA = .038 (.033, .043; 90% CI), CFI = .961, TLI = .929, SRMR = .033). Support for the convergent validity and construct validity of the measure was also found. Conclusions: This is the initial step in the development of a standard, psychometrically validated measure of cannabis PBS that has the potential to inform future research and interventions.  相似文献   
90.
Previous research outlines the correlates of childcare expulsion in the USA, yet researchers know little about how these correlates produce expulsion. This in‐depth qualitative analysis of 30 childcare providers’ accounts of expulsion finds a patterned process to expulsion: Teachers search for causes and solutions to challenging behaviours. When interventions fail, overwhelmed teachers shift their focus from ‘struggling’ children to ‘bad families’. Once the explanation of behaviour changes from within to outside of the child, expulsion is imminent. Interventions in teachers’ understandings, not only in children's behaviours, are discussed as a possible way to reduce expulsion.  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