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   10413篇
  免费   287篇
  国内免费   1篇
管理学   1497篇
民族学   40篇
人才学   1篇
人口学   945篇
丛书文集   50篇
理论方法论   989篇
综合类   316篇
社会学   4377篇
统计学   2486篇
  2023年   51篇
  2021年   68篇
  2020年   135篇
  2019年   191篇
  2018年   251篇
  2017年   343篇
  2016年   258篇
  2015年   215篇
  2014年   254篇
  2013年   1881篇
  2012年   392篇
  2011年   304篇
  2010年   243篇
  2009年   213篇
  2008年   259篇
  2007年   247篇
  2006年   194篇
  2005年   246篇
  2004年   211篇
  2003年   234篇
  2002年   271篇
  2001年   270篇
  2000年   245篇
  1999年   230篇
  1998年   180篇
  1997年   147篇
  1996年   154篇
  1995年   136篇
  1994年   135篇
  1993年   138篇
  1992年   170篇
  1991年   158篇
  1990年   142篇
  1989年   132篇
  1988年   152篇
  1987年   128篇
  1986年   125篇
  1985年   151篇
  1984年   126篇
  1983年   141篇
  1982年   98篇
  1981年   95篇
  1980年   88篇
  1979年   94篇
  1978年   114篇
  1977年   72篇
  1976年   70篇
  1975年   80篇
  1974年   61篇
  1973年   51篇
排序方式: 共有10000条查询结果,搜索用时 441 毫秒
951.
We examine the role of managers in controlling the positive impact of stakeholder management (SM) on firm financial performance (FP) in the long term. We develop and test competing hypotheses on whether managers act as “good citizens” or engage in “self‐dealing” when allowed greater discretion. We test our assertions using dynamic panel data analysis of a sample of 806 U.S. public firms operating in 34 industries over 5 years (2005–2009). Our results indicate a nuanced influence of managerial discretion contexts on the SM‐FP relationship. We infer that given more latitude in decision making, as long as the “going is good” managers act as good citizens, but otherwise they revert to managerial self‐dealing. In light of our results, firms designing governance mechanisms to encourage managers to balance the needs of both shareholders and stakeholders must remain cognizant of contextual contingencies.  相似文献   
952.
We discuss the optimal raw material acquisition strategy for a third party remanufacturer (3PR). We specifically investigate whether a 3PR should acquire used products or cores in bulk with uncertain quality levels, or in sorted grades with known quality levels; and whether to acquire and remanufacture cores before the demand is realized (planned acquisition), or after the demand is realized (reactive acquisition), or on both occasions (sequential acquisition). When only sorted cores are acquired, we find that, (i) it is optimal to acquire cores in multiple grades to balance acquisition and remanufacturing costs; (ii) if reactive acquisition is possible, it reduces the assortment size (number of grades in which cores are acquired) and the total inventory acquired in the planned acquisition; and (iii) the optimal portfolio of grades to acquire and the optimal acquisition and remanufacturing quantities of these grades can be determined analytically. When bulk cores are acquired in addition to sorted cores, the property of reduction in assortment size of the planned acquisition is preserved. We also show that the 3PR should acquire only a fraction of the demand in planned acquisition, and leave the rest for reactive acquisition. This fraction changes during the lifecycle of a remanufactured product. Using a combination of empirical and realistic data from a smartphone remanufacturer we show that sequential acquisition increases expected profit by up to 8% and 27% over only planned and only reactive acquisitions respectively, and reduces the inventory acquired by up to 21% over only planned acquisition.  相似文献   
953.
Gaze is one of the main means of communication in young infants, and it has been shown to be important for subsequent socio‐emotional and cognitive development. Maternal depression is a well‐known risk factor for disrupting mother–infant interactions, but findings regarding gaze behavior in infants of depressed versus nondepressed mothers have been ambiguous. In this study, we examined gaze duration and activity in a sample of 27 infants of mothers with postpartum depression (PPD) and 49 infants of nondepressed mothers. Maternal depressive symptoms were assessed with the Edinburgh Postnatal Depression Scale, and diagnoses were confirmed in clinical interview. Infant gaze was assessed during 4‐month face‐to‐face interactions using continuous timed‐event coding with high temporal resolution. Although we found no differences in gaze duration, infants of PPD mothers had both significantly less Gaze On and also less Gaze Off events. Findings suggest that PPD is related to reduced gaze activity during mother–infant interaction in 4‐month‐olds. This reduced activity may have long‐term negative consequences for child development.  相似文献   
954.
955.
Scholars across many disciplines have amassed a mountain of research documenting how social differences along lines of race, class, gender, and sexuality shape how those who need medical attention are cared for in the US healthcare system. Here, we aim to succinctly review a selection of studies that have considered the many ways both patients' and healthcare providers' social identities can impact care delivery. After establishing how these differences influence patient–provider interactions and patient diagnosis, treatment, and outcomes, we argue that a critical sociological perspective can help us to better understand why these inequities persist despite decades of research calling attention to them. Specifically, we suggest that research guided by symbolic interactionist and intersectional frameworks can generate more comprehensive analyses of inequality in healthcare delivery and help researchers delve deeper into the complex interactional processes undergirding disparities in care provision. We conclude by highlighting recent work that illustrates the value of this approach.  相似文献   
956.
957.
958.
959.
This paper describes a systemic, trauma and attachment model for a parenting program for fathers in residential substance abuse treatment. It emphasises the complex nature of delivering parenting programs in this context and the importance of going beyond simple linear principles of reward and punishment, upon which many other parenting programs are predicated.  相似文献   
960.
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