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   1027篇
  免费   12篇
管理学   78篇
民族学   11篇
人口学   109篇
丛书文集   4篇
理论方法论   116篇
综合类   2篇
社会学   676篇
统计学   43篇
  2024年   13篇
  2023年   19篇
  2022年   5篇
  2021年   14篇
  2020年   31篇
  2019年   64篇
  2018年   53篇
  2017年   68篇
  2016年   48篇
  2015年   42篇
  2014年   45篇
  2013年   157篇
  2012年   45篇
  2011年   48篇
  2010年   31篇
  2009年   24篇
  2008年   27篇
  2007年   34篇
  2006年   27篇
  2005年   27篇
  2004年   26篇
  2003年   15篇
  2002年   17篇
  2001年   11篇
  2000年   9篇
  1999年   17篇
  1998年   6篇
  1997年   10篇
  1996年   14篇
  1995年   8篇
  1994年   11篇
  1993年   10篇
  1992年   12篇
  1991年   6篇
  1990年   3篇
  1989年   2篇
  1985年   3篇
  1984年   2篇
  1983年   4篇
  1982年   4篇
  1981年   5篇
  1980年   2篇
  1979年   3篇
  1978年   3篇
  1975年   3篇
  1972年   2篇
  1971年   2篇
  1970年   1篇
  1969年   1篇
  1968年   1篇
排序方式: 共有1039条查询结果,搜索用时 0 毫秒
81.
Federal housing policy in the US across the postwar period supported the construction of new houses more than public provision or renovation of older structures as a means of ensuring a sufficient supply of quality dwellings. Understanding trends in new housing in particular is thus crucial to understanding the housing regime. Following Myers (Housing demography: Linking demographic structure and housing markets. University of Wisconsin Press, 1990; Housing Studies, 14, 473–490,1999), this paper conceptualizes historical change in the housing stock within a demographic framework as the movement of cohorts of households through cohorts of housing stock. Recent evidence suggests that a new cohort of houses arose in the 1980s and 1990s (larger with more amenities than past vintages), and that buyers of those new houses were increasingly affluent. In this paper, I link the succession to a new cohort of houses to household cohort succession and examine the increasing affluence of new house buyers by age and cohort, focusing especially on the entry of the Baby Boom generation exactly when the new cohort of houses arrived. I use US Census microdata for 1960–2000 to develop a cohort longitudinal dataset, and analyze historical change in stratification in new house ownership. I find significant shifts between cohorts in income inequality among new house buyers, with implications for the capacity of the housing regime to meet the future needs of an increasingly diverse population.
Rachel E. DwyerEmail:
  相似文献   
82.

Niche partitioning reduces interspecific competition, facilitating coexistence. In urban ecosystems, however, habitat loss reduces species’ ability to spatially partition activity. Temporal partitioning may thus increase in urban areas as species, unable to avoid each other spatially, partition time to avoid competition. In Midwestern US cities, eastern gray squirrels (Sciurus carolinensis) and fox squirrels (S. niger) co-occur and compete for resources. We identified urban gray and fox squirrel activity patterns and how they vary with season, land cover, and among sites where they do and do not co-occur using camera-trap data. Both species’ activity patterns varied with season and canopy and impervious surface cover. Gray squirrel activity patterns varied in the presence of fox squirrels only in the fall, providing limited support for our temporal partitioning hypothesis. Temporal niche partitioning may thus play a role in supporting these species co-existence when competition is seasonally-elevated (e.g., fall hording), but appears less important in other seasons.

  相似文献   
83.
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - This article presents a new strategy for reviewing large, multidisciplinary academic literatures: a multi-method...  相似文献   
84.
Urban Ecosystems - White-tailed deer (Odocoileus virginianus) are becoming increasingly common in urban environments. How they respond to potential changes (i.e. increased human interactions,...  相似文献   
85.
86.
Victims of spouse abuse were interviewed concerning their views of why their husbands were abusive. It was hypothesized that by concentrating on one specific characteristic of this kind previously undocumented patterns of response would be elicited from the subjects. It was concluded that the women's reasons for the violence perpetrated by their spouses serve as justification for the abusers’actions and legitimize maintenance of the relationship.  相似文献   
87.
88.
The reactions of the entire family system to the death of a child are examined. The case illustrates therapeutic interventions dealing with changes in family structure, guilt and mourning processes in parents, anxiety and other reactions of children, and the cognitive confusion of both children and adults. The problems for the therapist in working with a family following the death of a child are discussed.  相似文献   
89.

Problem

Pacific Islanders are disproportionately burdened by poorer maternal health outcomes with higher rates of pre-term births, low birth weight babies, infant mortality, and inadequate or no prenatal care.

Purpose

The purpose of this study was twofold: (1) to explore maternal health care providers’ perceptions and experiences of barriers in providing care to Marshallese women, and (2) providers perceived barriers of access to care among Marshallese women. This is the first paper to explore perceived barriers to maternal health care among a Marshallese community from maternal health care providers’ perspectives in the United States.

Methods

A phenomenological, qualitative design, using a focus group and in-depth interviews with 20 maternal health care providers residing in northwest Arkansas was chosen.

Findings

Several perceived barriers were noted, including transportation, lack of health insurance, communication and language, and socio-cultural barriers that described an incongruence between traditional and Western medical models of care. There was an overall discord between the collectivist cultural identity of Marshallese families and the individualistic maternal health care system that merits further research.

Discussion

Solutions to these barriers, such as increased cultural competency training for maternal health care providers and the incorporation of community health workers are discussed.  相似文献   
90.
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