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   471篇
  免费   37篇
管理学   52篇
民族学   4篇
人口学   39篇
理论方法论   88篇
综合类   7篇
社会学   275篇
统计学   43篇
  2023年   9篇
  2021年   4篇
  2020年   17篇
  2019年   17篇
  2018年   21篇
  2017年   36篇
  2016年   27篇
  2015年   14篇
  2014年   21篇
  2013年   90篇
  2012年   22篇
  2011年   19篇
  2010年   13篇
  2009年   15篇
  2008年   10篇
  2007年   17篇
  2006年   10篇
  2005年   9篇
  2004年   18篇
  2003年   13篇
  2002年   10篇
  2001年   9篇
  2000年   5篇
  1999年   7篇
  1998年   8篇
  1997年   4篇
  1996年   6篇
  1995年   6篇
  1994年   7篇
  1993年   2篇
  1992年   4篇
  1991年   2篇
  1990年   1篇
  1989年   2篇
  1988年   2篇
  1987年   3篇
  1986年   4篇
  1985年   2篇
  1984年   1篇
  1983年   5篇
  1982年   4篇
  1981年   1篇
  1980年   2篇
  1979年   1篇
  1975年   2篇
  1973年   2篇
  1972年   1篇
  1971年   2篇
  1970年   1篇
排序方式: 共有508条查询结果,搜索用时 794 毫秒
51.
52.
53.
This paper is based on findings of a Welsh Assembly Governmentfunded review of children’s independent advocacy servicesin Wales with reference to their involvement in complaints madeby children, or by their parents or carers on their behalf,about local authority social services. It draws, primarily,upon qualitative interviews with local authority children’scomplaints officers, whose task is to receive complaints orconcerns, field these to appropriate social services staff,maintain oversight of their progression and keep complainantsinformed of developments. The paper describes the challengesthat complaints officers perceive children encounter in movingcomplaints forward, especially in a context where independentadvocacy services are involved and where these services areviewed with some suspicion by social services staff. It suggeststhat complaints officers play a pivotal part in managing thesometimes contested and complex interface between service providerand child and may do so from a position of limited authorityand influence. The role of complaints officers in engaging withcomplainants and their advocates, and with those colleaguesimplicated in complaints, has rarely been the topic of research.This paper provides accounts from these key staff that helpilluminate the tensions and difficulties that can enter thechildren’s complaints process.  相似文献   
54.
Multistage models have become the basic paradigm for modeling carcinogenesis. One model, the two-stage model of carcinogenesis, is now routinely used in the analysis of cancer risks from exposure to environmental chemicals. In its most general form, this model has two states, an initiated state and a neoplastic state, which allow for growth of cells via a simple linear birth-death process. In all analyses done with this model, researchers have assumed that tumor incidence is equivalent to the formation of a single neoplastic cell and the growth kinetics in the neoplastic state have been ignored. Some researchers have discussed the impact of this assumption on their analyses, but no formal methods were available for a more rigorous application of the birth-death process. In this paper, an approximation is introduced which allows for the application of growth kinetics in the neoplastic state. The adequacy of the approximation against simulated data is evaluated and methods are developed for implementing the approximation using data on the number and size of neoplastic clones.  相似文献   
55.
56.
We employ a discretetime hazard model and a Blinder-decomposition approach to explore the possibility of racial discrimination in the dismissal and retention of college football coaches by university administrations. A rich data set consisting of 81 institutions over an 11-year period (1990–2000) that contains, in addition to a coach's race, variables on cumulative winning records, annual on-the-field improvements, and pre-/post-season game participation by institutions and their coaches is employed. Our study finds that black coaches, on average, face a dismissal probability that is 9.6 percentage points below that of their nonblack counterparts, ceteris paribus, suggesting that black head coaches may be the beneficiaries of favorable treatment by university administrators. Such a result likely stems from universities ' approach to social concerns involving race and gender issues. This finding also fits a construct that considers workplace discrimination as multi-dimensional. For example, black representation in the college football coaching ranks may be disproportionately low, possibly as a result of discrimination. However, once hired, black coaches are given more time to succeed than nonblacks, other things constant.  相似文献   
57.
We obtained banding and recovery data from the Bird Banding Laboratory (operated by the Biological Resources Division of the US Geological Survey) for adults from 129 avian species that had been continuously banded for > 24 years. Data were partitioned by gender, banding period (winter versus summer), and by states/provinces. Data sets were initially screened for adequacy based on specific criteria (e.g. minimum sample sizes). Fifty-nine data sets (11 waterfowl species, the Mourning Dove and Common Grackle) met our criteria of adequacy for further analysis. We estimated annual survival probabilities using the Brownie et al. recovery model {St, ft} in program MARK. Trends in annual survival and temporal process variation were estimated using random effects models based on shrinkage estimators. Waterfowl species had relatively little variation in annual survival probabilities (mean CV = 8.7% and 10% for males and females, respectively). The limited data for other species suggested similar low temporal variation for males, but higher temporal variation for females (CV = 40%). Evidence for long-term trends varied by species, banding period and sex, with no obvious spatial patterns for either positive or negative trends in survival probabilities. An exception was Mourning Doves banded in Illinois/Missouri and Arizona/New Mexico where both males (slope = -0.0122, se = 0.0019 and females (slope = -0.0109 to -0.0128, se = 0.0018 -0.0032) exhibited declining trends in survival probabilities. We believe our approach has application for large-scale monitoring. However, meaningful banding and recovery data for species other than waterfowl is very limited in North America.  相似文献   
58.
Our investigation of some of the processes involved in the emergence of ‘the modern family’is based on evidence from oral histories conducted with people who grew up in Scottish farming and crofting families in the early decades of the century. After showing how peasant and capitalist modes of production shaped both family structures and strategies for getting a living, we examine some of the ways in which the encroachments of the cash economy helped create new forms of gendered inequalities. Our discussion concludes with an analysis of recent papers concerned with the ways in which families are embedded in community life and the implications for long term change in authority structures.  相似文献   
59.
60.
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