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   19558篇
  免费   458篇
  国内免费   2篇
管理学   2727篇
民族学   74篇
人才学   1篇
人口学   1708篇
丛书文集   93篇
教育普及   2篇
理论方法论   1796篇
综合类   419篇
社会学   9834篇
统计学   3364篇
  2020年   269篇
  2019年   329篇
  2018年   373篇
  2017年   521篇
  2016年   421篇
  2015年   327篇
  2014年   395篇
  2013年   3237篇
  2012年   558篇
  2011年   501篇
  2010年   353篇
  2009年   374篇
  2008年   428篇
  2007年   442篇
  2006年   392篇
  2005年   511篇
  2004年   438篇
  2003年   376篇
  2002年   403篇
  2001年   450篇
  2000年   444篇
  1999年   432篇
  1998年   329篇
  1997年   306篇
  1996年   331篇
  1995年   304篇
  1994年   324篇
  1993年   292篇
  1992年   357篇
  1991年   363篇
  1990年   360篇
  1989年   341篇
  1988年   334篇
  1987年   305篇
  1986年   306篇
  1985年   289篇
  1984年   337篇
  1983年   314篇
  1982年   248篇
  1981年   210篇
  1980年   217篇
  1979年   260篇
  1978年   218篇
  1977年   185篇
  1976年   170篇
  1975年   146篇
  1974年   162篇
  1973年   134篇
  1972年   95篇
  1971年   98篇
排序方式: 共有10000条查询结果,搜索用时 328 毫秒
341.
In examining various ways of thinking about the development of long-term care policy for the baby-boom cohorts, this article discusses the importance of basing long-term care policy discussions on a recognition of social and economic trends, as well as on the informal exchanges of care that occur over life and the diversity within the baby-boom cohorts. The implications of two ways of thinking about challenges posed by the aging of baby boomers--the generational equity/crisis perspective and the generational investment/gradual adjustment perspective are also discussed. It is suggested that the generational equity perspective is consonant with proposals to expand private savings for long-term care contingencies and private long-term insurance and, secondarily, with proposals to expand means-testing for benefits. The second perspective is more consistent with proposals to create new universal services through a traditional social insurance approach, or through a block grant such as the one discussed in the context of the Clinton health care reform plan.  相似文献   
342.
From Ellis Island to LAX: immigrant prospects in the American city   总被引:1,自引:0,他引:1  
"This article seeks to bring the ?urban' back into immigration research. Each immigrant receiving area has its own particular group of newcomers, and the economic and political structures of the immigrant receiving areas are also distinctive. Those structures are not all determining, as immigrant trajectories are shaped by the interaction between distinctive urban institutions and the specific characteristics of the relevant ethnic groups. But in the last analysis, the urban context makes a difference, as this study shows by examining the leading [U.S.] immigrant destinations--New York and Los Angeles."  相似文献   
343.
Marketing means more than just communicating or advertising to potential patients; marketing means identifying your customers and working to meet or exceed their expectations. There are five key areas of a marketing plan: (1) Establish the foundation, beginning with your mission statement; (2) Assess your marketing environment by internal and external research; (3) Target your efforts, looking at image and perception; (4) Develop your particular mix of product, price, place of distribution, and promotion; and (5) implement and evaluate your marketing process. This article discusses the importance of a marketing plan for the medical specialist and highlights the features unique to a practice working in a system of capitated reimbursement. Applying these principles will help to demonstrate added value, protect the fundamental role of the patient-physician relationship, ensure that our efforts are aligned with professional missions and goals, and ultimately increase profitability and professional success.  相似文献   
344.
This paper provides an overview of retirement patterns in Hong Kong on the basis of limited data. A censored regression model is used to infer the retirement age from people‘s current retirement status and their current age. This model is equivalent to a restricted probit model, and the interpretation of parameters is straightforward. The results clearly show a negative income effect on the retirement decision. The retirement age seems to be positively related to lifetime earnings but negatively related to the rate of decline of earnings with age. JEL classification: C24, J14, J26 Received May 6, 1996 / Accepted February 5, 1997  相似文献   
345.
Modeling household fertility decisions with generalized Poisson regression   总被引:1,自引:1,他引:0  
This paper models household fertility decisions by using a generalized Poisson regression model. Since the fertility data used in the paper exhibit under-dispersion, the generalized Poisson regression model has statistical advantages over both standard Poisson and negative binomial regression models, and is suitable for analysis of count data that exhibit either over-dispersion or under-dispersion. The model is estimated by the method of maximum likelihood. Approximate tests for the dispersion and goodness-of-fit measures for comparing alternative models are discussed. Based on observations from the Panel Study of Income Dynamics of 1989 interviewing year, the empirical results support the fertility hypothesis of Becker and Lewis (1973). Received January 7, 1997 /Accepted April 3, 1997  相似文献   
346.
Mortality Risk Perceptions: A Bayesian Reassessment   总被引:1,自引:1,他引:0  
"This study uses data on perceived and actual mortality risks to test several alternative Bayesian models of the factors influencing risk beliefs. The analysis...indicates that while the hazard rate for the individual age group is an influential factor, the overall population death rate and the discounted expected number of life years lost due to the cause of death are also influential in affecting risk perceptions.... The predictive power of a linear perception model increases with the level of the risk and is least accurate for very small risks."  相似文献   
347.
This study contrasted the experienced quality of life of residents living on one of two nursing home units: a unit for those considered socially intact and a unit combining residents who had moderately impaired cognition or physical function with those requiring skilled nursing or therapy. Qualitative interviews were held with residents of both units. The findings indicate that the social environment of each of the units played a fundamental role in the residents' quality of life. The social environment affected the residents' conceptions of self, their interactions with other residents and their interactions with the nursing staff. The article suggests the processes behind the social environment of each floor that may have resulted in different perceptions of the quality of life.  相似文献   
348.
Assimilation and its discontents: between rhetoric and reality   总被引:2,自引:0,他引:2  
"It is in [the] conceptual interstices between theory, rhetoric, and reality that paradoxes (or at least what may appear as paradoxes) emerge. By focusing on paradoxes--on evidence that contradicts orthodox expectations and points instead to assimilation's discontents--the aim of this article is to test empirically the conception of assimilation as a linear process leading to improvements in immigrant outcomes over time and generation in the United States, to unmask underlying pre-theoretical ethnocentric pretensions, and to identify areas in need of conceptual, analytical and theoretical refinement. It is precisely through the examination of paradoxical cases--in effect, deviant case analyses--that fruitful reformulations can be stimulated, considered, and advanced."  相似文献   
349.
"Is the contemporary second generation on the road to the upward mobility and assimilation that in retrospect characterized the second generation of earlier immigrations? Or are the American economic context and the racial origins of today's immigration likely to result in a much less favorable future for the contemporary second generation? While several recent papers have argued for the latter position, we suspect they are too pessimistic. We briefly review the second generation upward mobility in the past and then turn to the crucial comparisons between past and present."  相似文献   
350.
Rethinking assimilation theory for a new era of immigration   总被引:6,自引:0,他引:6  
"We argue that assimilation theory has not lost its utility for the study of contemporary immigration to the United States. In making our case, we review critically the canonical account of assimilation provided by Milton Gordon and others; we refer to Shibutani and Kwan's theory of ethnic stratification to suggest some directions to take in reformulating assimilation theory. We also examine some of the arguments frequently made to distinguish between the earlier mass immigration of Europeans and the immigration of the contemporary era and find them to be inconclusive. Finally, we sift through some of the evidence about the socioeconomic and residential assimilation of recent immigrant groups. Though the record is clearly mixed, we find evidence consistent with the view that assimilation is taking place, albeit unevenly."  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