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   525篇
  免费   26篇
管理学   56篇
民族学   3篇
人才学   1篇
人口学   80篇
丛书文集   2篇
理论方法论   57篇
综合类   4篇
社会学   303篇
统计学   45篇
  2023年   5篇
  2021年   6篇
  2020年   10篇
  2019年   17篇
  2018年   12篇
  2017年   26篇
  2016年   19篇
  2015年   20篇
  2014年   12篇
  2013年   75篇
  2012年   19篇
  2011年   19篇
  2010年   16篇
  2009年   13篇
  2008年   13篇
  2007年   19篇
  2006年   15篇
  2005年   15篇
  2004年   19篇
  2003年   9篇
  2002年   10篇
  2001年   7篇
  2000年   14篇
  1999年   7篇
  1998年   6篇
  1997年   8篇
  1996年   13篇
  1995年   5篇
  1994年   3篇
  1993年   5篇
  1992年   15篇
  1991年   2篇
  1990年   5篇
  1989年   7篇
  1988年   5篇
  1987年   4篇
  1986年   8篇
  1985年   5篇
  1984年   8篇
  1983年   8篇
  1982年   10篇
  1981年   4篇
  1979年   2篇
  1978年   5篇
  1977年   4篇
  1975年   5篇
  1973年   2篇
  1972年   2篇
  1965年   2篇
  1964年   1篇
排序方式: 共有551条查询结果,搜索用时 78 毫秒
531.
532.
Recognizing the inherent pressures on farm families and farmland, USDA has been developing policies and programs that simultaneously attempt to retain existing farm families on the landscape, recruit new farmers, and create lasting economic opportunities rooted in agriculture. In this article we argue that to date there has been an overemphasis on economic and structural approaches and a systematic discounting of the way individual farmer and farm household motivations can differ as they relate to the farm household life cycle, enterprise growth, adaptation, and reproduction. We use a sociological lens to qualitatively and quantitatively examine the social differences between multigeneration and first‐generation farmers at the rural‐urban interface by exploring how economic and noneconomic values influence succession plans and enterprise structure. We find that the answers to these questions are complex, layered, and not static, as farm households cycle through the life course. We describe how the differences between young and old multigeneration and first‐generation farmers can influence the structure of agriculture at the rural‐urban interface, and conclude with some practical policy recommendations.  相似文献   
533.
This exploratory study sought to determine if a popular school-based drug prevention program might be effective in schools that are making adequate yearly progress (AYP). Thirty-four schools with grades 6 through 8 in 11 states were randomly assigned either to receive Project ALERT (n = 17) or to a control group (n = 17); of these, 10 intervention and nine control schools failed to make AYP. Students completed three self-report surveys. For lifetime cigarette use and 30-day alcohol use, Project ALERT was more effective in schools that made AYP. However, in these schools, Project ALERT negatively affected students' lifetime marijuana use. This study provided some preliminary evidence that prevention programming may not work as well in poorer performing schools; however, further exploration is needed.  相似文献   
534.
This article attempts to demonstrate how supportive psychotherapy may serve as a companion therapeutic modality for case management activities with older adult clients suffering with borderline personality disorder (BPD). Justification for this approach is provided and techniques and interventions are identified. Three case examples demonstrating the modalities integration are provided.  相似文献   
535.
Leadership and strategic management research suggests that the extent to which CEOs influence performance largely depends on the presence or absence of certain factors. These factors may include the characteristics of the task at hand, subordinates, the organization itself or the external environment. Among these factors, a fundamental contingency that has received little empirical attention is an organization's ownership and governance structure—that is, who owns and monitors the organization. In this paper, we outline how different ownership and governance structures can present the opportunity for, or limit, leader influence and empirically examine the extent to which CEO effects on financial performance depend on these structures. Examining organizations in the same industry but with different ownership and governance structures, our results suggest that these structures are closely aligned with the degree to which CEOs influence firm performance. Our findings support the notion that leaders matter most when ownership and governance structures correspond with a weak or ambiguous institutional logic. This study contributes new insight into the “opportunity structure” of CEO influence, that is, the organizational factors that shape leader discretion and, hence, condition the CEO's level of influence over firm performance.  相似文献   
536.
Despite the intensity of the recent debate between Clark and Galster, there is considerable agreement that there are multiple forces which create the patterns of residential separation found in American cities, and that government or public discrimination plays a minor role. The differences between Clark and Galster relate to the relative weight to be given to private discrimination and the role of preferences in explaining the patterns of racial separation. The actual weight to be given to private discrimination is yet to be specified.  相似文献   
537.
A re-examination of the literature on the factors which influence residential segregation in American cities emphasizes the complexity of the factors involved in generating patterns of separation in urban areas and the necessity of considering more than any single factor in order to understand those patterns. In addition, recent on-going research on residential transition, white flight, and the demographics of school attendance area change further emphasizes the declining importance of public and overt private discrimination. Although private discrimination has not been eliminated from society, it cannot be relied on as a total and unambiguous explanation for the patterns that we observe within metropolitan areas. I would like to thank Tony Pascal for his advice and comments.  相似文献   
538.
The Gwembe Study was launched in 1956 to monitor the responses of 57,000 Tonga-speakers from the Middle Zambezi Valley to involuntary relocation. Since then, periodic censuses and frequent field visits have generated a wide variety of information. This article examines the demography of four Gwembe Tonga villages from 1956 to 1991, a period characterized first by relocation, then prosperity, and finally by economic hardship. White nuptiality does not respond significantly to socio-economic trends, marital fertility falls sharply during relocation, rebounds with the onset of prosperity, and decreases slowly during the most recent decade of economic hardship. Mortality of the very young and old is also sensitive to such changes. There is striking excess male mortality in all periods, especially among male infants and in particular male twins. The sex ratio at ‘birth’ is 92. This abnormal sex ratio at birth may be the result of conscious sex preference favouring females.  相似文献   
539.
We examined social support as a facilitator of advance care planning in unmarried women of different sexual orientations. Survey participants consisted of 215 women, 90 who reported a preference for partnering with women (WPW) and 125 for partnering with men (WPM). Our findings indicate that the association between social support and advance care planning was mixed. Specifically, social support had no significant impact on executing a will for either WPW or WPM. Among WPW, naming a health-care proxy was associated with reporting a partner who provided social support. For WPM, having a partner for social support was not associated with naming a health-care proxy. These insights help in the understanding of women's advance care planning.  相似文献   
540.
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