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   955篇
  免费   34篇
管理学   119篇
民族学   8篇
人口学   43篇
丛书文集   48篇
理论方法论   116篇
现状及发展   1篇
综合类   170篇
社会学   305篇
统计学   179篇
  2023年   2篇
  2022年   7篇
  2021年   20篇
  2020年   23篇
  2019年   19篇
  2018年   21篇
  2017年   37篇
  2016年   33篇
  2015年   27篇
  2014年   23篇
  2013年   170篇
  2012年   45篇
  2011年   44篇
  2010年   37篇
  2009年   30篇
  2008年   38篇
  2007年   42篇
  2006年   39篇
  2005年   37篇
  2004年   31篇
  2003年   32篇
  2002年   27篇
  2001年   25篇
  2000年   17篇
  1999年   16篇
  1998年   5篇
  1997年   6篇
  1996年   8篇
  1995年   15篇
  1994年   12篇
  1993年   12篇
  1992年   12篇
  1991年   8篇
  1990年   9篇
  1989年   9篇
  1988年   4篇
  1987年   4篇
  1985年   6篇
  1984年   5篇
  1983年   4篇
  1982年   6篇
  1980年   3篇
  1979年   8篇
  1978年   1篇
  1977年   2篇
  1976年   1篇
  1975年   1篇
  1974年   2篇
  1973年   1篇
  1965年   1篇
排序方式: 共有989条查询结果,搜索用时 31 毫秒
71.
庄森 《学术探索》2005,(2):136-140
本文从解读胡适杂文的文本入手,从文体结构、论证方法、行文造句及文学手法的运用诸方面探讨胡适杂文的表现艺术,指出胡适的杂文有三个突出的艺术特点:其一,结构严密。论证环环紧扣,说理极为有力。其二,清楚明白。一是思想清楚,观点明确;二是语言显浅,明白通俗。其三,议论形象。一是勾勒形象,说理可感;二是善用比喻、富于幽默,全文既通俗浅白,也还生动形象。  相似文献   
72.

Wealth aggregates implied by the Household Finance and Consumption Survey (HFCS) usually yield much lower amounts than macroeconomic statistics reported in the National Accounts. An important source of this gap may be the under-representation of the wealthiest households in the HFCS. This article therefore combines a semi-parametric Pareto model estimated from top survey data and observations from rich lists with a non-parametric stratification approach to quantify the impact of the missing wealthy households on component-specific micro-macro gaps. We find that unadjusted micro data substantially underestimates wealth inequality. The largest effects are documented for equity. For other components, the missing wealthy explain less than ten percentage points of the micro-macro gap. We find that differences in oversampling strategies limit the cross-country comparability of unadjusted survey-implied wealth distributions and that our top tail adjustment leads to measures that are internationally better comparable.

  相似文献   
73.
王森 《西北人口》2014,(3):37-42
基于省级面板数据,本文对预期寿命结构及其影响因素问题进行研究。首先,文章分析了我国整体预期寿命及两性预期寿命的地理分布特性,随时间的变化特点,以及与经济发展水平的关系。然后,建立预期寿命的固定效应模型,分析不同影响因素与预期寿命的关系。研究发现经济发展水平、教育和卫生资源对男性和女性预期寿命会产生不同的影响,其中经济发展水平会显著影响女性预期寿命,而教育对男性预期寿命的影响更显著。由此,经济发展水平的提高会导致两性预期寿命差距的增加,而教育水平的提高和卫生资源投入的增加则可能会降低两性预期寿命的差距。  相似文献   
74.
Effects of Outcome and Probabilistic Ambiguity on Managerial Choices   总被引:1,自引:0,他引:1  
Information ambiguity is prevalent in organizations and likely influences management decisions. This study examines, given imprecise probabilities and outcomes, how managers make choices when they are provided with single-figure benchmarks. Seventy-nine MBA students completed two experiments. We found that, in a decision framed as a decision under certainty involving an ambiguous outcome, the majority of the subjects were ambiguity prone in the loss condition and switched to ambiguity aversion in the gain condition. However, in the presence of probabilistic ambiguity in a decision under risk, this expected switching pattern was shown only when the difference in riskiness between the two choice options (in the loss condition) was perceived to be relatively small. In a companion study, we used a written protocol approach to identify factors that affect decision makers' investment choices when faced with ambiguous outcomes. Protocols frequently mentioned that the ambiguous outcome option was risky, even in the case which was framed as a decision under certainty in the problem statement. In a decision under risk with ambiguous outcomes, the combination of probabilistic risk and outcome ambiguity was seen as even more risky.  相似文献   
75.
中国利率调整对消费作用的实证分析   总被引:3,自引:0,他引:3  
王森  蒋贤锋 《求是学刊》2006,33(2):60-66
研究表明,中国利率的变化与国民消费水平增长呈现出一种反向变化的趋势,这一结果与传统的凯恩斯理论、永久性收入假说理论和随机游走理论等相悖,其主要原因是中国的城市消费和农村消费的异质性和“二元结构”特点,不具备上述理论的假设条件。利率机制目前还不是中国调解消费的理想工具,应考虑更多地使用非利率的其他金融手段。  相似文献   
76.
77.
Karni and Safra [8] prove that the Becker-DeGroot-Marschak mechanism reveals a decision maker's true certainty equivalent of a lottery if and only if he satisfies the independence axiom. Segal [17] claims that this mechanism may reveal a violation of the reduction of compound lotteries axiom. This paper empirically tests these two interpretations. Our results show that the second interpretation fits better with the collected data. Moreover, we show by means of some nonexpected utility examples that these results are consistent with a wide range of functionals.  相似文献   
78.
Insurer ambiguity and market failure   总被引:2,自引:2,他引:2  
A series of studies investigate the decision processes of actuaries, underwriters, and reinsurers in setting premiums for ambiguous and uncertain risks. Survey data on prices reveal that all three types of these insurance decision makers are risk averse and ambiguity averse. In addition, groups appear to be influenced in their premium-setting decisions by specific reference points such as expected loss and the concern with insolvency. This behavior is consistent with a growing analytical and empirical literature in economics and decision processes that investigates the role that uncertainty plays on managerial choices. Improved risk-assessment procedures and government involvement in providing protection against catastrophic losses may induce insurers to reduce premiums and broaden available coverage.This article is part of a larger effort supported by the National Science Foundation on The Role of Insurance, Compensation, Regulation, and Protective Behavior in Decision Making about Risk and Misfortune. We greatly appreciate the many helpful comments and suggestions by our colleagues on the project: Jon Baron, Colin Camerer, Neil Doherty, Jack Hershey, Eric Johnson, and Paul Kleindorfer. Support from NSF Grant #SES8809299 is gratefully acknowledged.  相似文献   
79.
This article compares the performance of the expected utility (EU) and lottery-dependent expected utility (LDEU) models in predicting the actual choices of experimental subjects among risky options. In the process, we present two approaches for calibrating the LDEU model for an individual decision maker. The results indicate that while LDEU exhibits a higher potential for correctly predicting choice, the version of the model calibrated by indifference judgments does not outperform EU. We suggest a functional form for the parametric functions that defines the LDEU model, and discuss ways in which this function can be incorporated into choice-based assessment approaches to improve predictions.This research was supported in part by the Business Associates Fund at the Fuqua School of Business, Duke University.  相似文献   
80.
ABSTRACT

Objectives: To examine how tobacco use and depression/anxiety disorders are related to disturbed sleep in college students. Participants: 85,138 undergraduate respondents (66.3% female, 74.5% white, non-Hispanic, ages 18–25) from the Spring 2011 American College Health Association–National College Health Assessment II database. Methods: Multivariate analyses of tobacco use (none, intermediate, daily) and mental health (diagnosed and/or symptomatic depression or anxiety) were used to predict sleep disturbance. Results: Daily tobacco use was associated with more sleep problems than binge drinking, illegal drug use, obesity, gender, and working >20 hours/week. Students with depression or anxiety reported more sleep disturbances than individuals without either disorder, and tobacco use in this population was associated with the most sleep problems. Conclusions: Tobacco use and depression/anxiety disorders are both independently associated with more sleep problems in college students. Students with depression and/or anxiety are more likely to be daily tobacco users, which likely exacerbates their sleep problems.  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