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   528篇
  免费   11篇
管理学   74篇
民族学   1篇
人口学   43篇
理论方法论   65篇
综合类   3篇
社会学   293篇
统计学   60篇
  2023年   6篇
  2021年   6篇
  2020年   10篇
  2019年   13篇
  2018年   9篇
  2017年   8篇
  2016年   8篇
  2015年   9篇
  2014年   12篇
  2013年   65篇
  2012年   22篇
  2011年   17篇
  2010年   16篇
  2009年   12篇
  2008年   9篇
  2007年   20篇
  2006年   16篇
  2005年   24篇
  2004年   11篇
  2003年   13篇
  2002年   5篇
  2001年   13篇
  2000年   15篇
  1999年   7篇
  1998年   5篇
  1997年   11篇
  1996年   11篇
  1995年   6篇
  1994年   10篇
  1993年   6篇
  1992年   9篇
  1991年   16篇
  1989年   5篇
  1988年   5篇
  1987年   10篇
  1986年   8篇
  1985年   5篇
  1984年   6篇
  1983年   8篇
  1982年   5篇
  1981年   7篇
  1980年   8篇
  1979年   3篇
  1978年   7篇
  1977年   3篇
  1976年   5篇
  1975年   5篇
  1974年   9篇
  1972年   5篇
  1971年   3篇
排序方式: 共有539条查询结果,搜索用时 15 毫秒
81.
The optimal approach to treating minors with gender dysphoria/gender variance (GD/GV) is much more controversial than treating these phenomena in adults. This is because children have limited capacity to participate in decision making regarding their own treatment, and even adolescents have no legal ability to provide informed consent. Minors must, therefore, depend on parents or other caregivers to make treatment decisions on their behalf, including those that will influence the course of their lives in the long term. Presently, the highest level of evidence available for selecting among the various approaches to treatment is best characterized as "expert opinion." Yet, opinions vary widely among experts and are influenced by theoretical orientation and assumptions and beliefs regarding the origins of gender identity, as well as its perceived malleability at particular stages of development. This article outlines some of the more salient points raised by the clinicians who treat GD/GV and their discussants. This article summarizes what the editors believe is known and what has yet to be learned about minors with GD/GV, their families, their treatment, and their surrounding cultures.  相似文献   
82.
This paper develops asymptotic optimality theory for statistical treatment rules in smooth parametric and semiparametric models. Manski (2000, 2002, 2004) and Dehejia (2005) have argued that the problem of choosing treatments to maximize social welfare is distinct from the point estimation and hypothesis testing problems usually considered in the treatment effects literature, and advocate formal analysis of decision procedures that map empirical data into treatment choices. We develop large‐sample approximations to statistical treatment assignment problems using the limits of experiments framework. We then consider some different loss functions and derive treatment assignment rules that are asymptotically optimal under average and minmax risk criteria.  相似文献   
83.
The demand for insurance is examined when the insured asset can incur losses that are excluded from insurance coverage. These losses are negatively correlated with covered losses and hence cannot be treated as background risk. Excluded losses have strikingly different effects on the demand for insurance than does background risk and lead to a modification of many standard insurance demand results. A number of new theorems concerning the effects of excluded losses are also presented. Risk-averse and prudent decision makers reduce their demand for insurance when excluded losses increase in size or riskiness. Excluded losses are a possible explanation for why many decision makers fail to take up insurance when it is offered.  相似文献   
84.
ABSTRACT

This article analyses the 2017 general election in New Zealand and draws out some of its implications. The final outcome was a surprise, and its implications momentous. Events strengthened Labour under a new leader and weakened the Green and New Zealand First parties, making it possible for Labour to become a viable coalition formateur. Comparing campaign public polling results, at least some of the polls were ‘wrong’, but all added to the excitement and uncertainty. Coupled with a new Labour Party leader, that uncertainty and excitement had mobilising effects that affected the young, but not the old. Finally, this article analyses the changes to the party system, nation-wide, and in the Māori electorates, assessing the degree of two-party dominance, and draws out implications for debates about the threshold for representation.  相似文献   
85.
As academicians, we emphasize to our students to keep up with class, and always read ahead. When I took over as President-elect of the WSSA in April of 2008, while busy communicating with the Section Coordinators and plan the 2009 Annual Conference (Reno, Nevada), I would occasionally pause and ponder what I would present for my President Address (reading ahead). What do I know that would be of interest to the general membership of the WSSA? I naturally thought of China and its economic reform, as half of my research output over the last decade has been in this area. Then, the subprime crisis came to be, and I wondered about how the economy would cope. I can claim some expertise to the former, but of no special authority regarding the latter. However, I do have some thoughts regarding the role of the State during such economic upheavals, but in a more conceptual manner than a policy solution.  相似文献   
86.
87.
88.
The Arrow-Pratt (A-P) definitions of absolute and relative risk aversion dominate the discussion of risk aversion and defining “more risk averse”. Ross (Econometrica 49:621–663, 1981) notes, however, that being A-P more risk averse is not sufficient for addressing many important comparative static questions. Consequently he introduces “a new and stronger measure for comparing two agents’ attitudes towards risk…”. Ross does not provide a corresponding measure of risk aversion. This paper uses a normalized measure of concavity to characterize the Ross definition of strongly more risk averse on bounded intervals. Other properties and uses of these normalized measures of concavity are also presented.  相似文献   
89.
90.
For twenty years Puerto Rico has had the world’s highest prevalence of sterilization. From the 1982 Puerto Rico Fertility and Family Planning Assessment we examine whether the probability of obtaining sterilization is changing and what impact sterilization has on fertility, finding that the use of contraceptive sterilization has not declined and will probably continue to increase in Puerto Rico. Nonuse rather than temporary methods of contraception is the second most likely circumstance after sterilization. We also find that sterilization has reduced the total marital fertility rate by over 33 percent, thus having a significant effect on reducing the rate of natural increase; by all indications, it will have a greater effect in the future.  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