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   9203篇
  免费   25篇
管理学   1335篇
民族学   32篇
人口学   825篇
丛书文集   34篇
理论方法论   722篇
综合类   112篇
社会学   4066篇
统计学   2102篇
  2024年   54篇
  2021年   52篇
  2020年   144篇
  2019年   195篇
  2018年   243篇
  2017年   305篇
  2016年   231篇
  2015年   159篇
  2014年   221篇
  2013年   1498篇
  2012年   298篇
  2011年   297篇
  2010年   205篇
  2009年   206篇
  2008年   172篇
  2007年   217篇
  2006年   219篇
  2005年   205篇
  2004年   168篇
  2003年   170篇
  2002年   175篇
  2001年   214篇
  2000年   200篇
  1999年   187篇
  1998年   142篇
  1997年   138篇
  1996年   139篇
  1995年   117篇
  1994年   123篇
  1993年   111篇
  1992年   149篇
  1991年   129篇
  1990年   126篇
  1989年   120篇
  1988年   107篇
  1987年   102篇
  1986年   107篇
  1985年   116篇
  1984年   118篇
  1983年   131篇
  1982年   104篇
  1981年   94篇
  1980年   93篇
  1979年   100篇
  1978年   97篇
  1977年   84篇
  1976年   76篇
  1975年   69篇
  1974年   60篇
  1973年   58篇
排序方式: 共有9228条查询结果,搜索用时 15 毫秒
991.
992.
The current study evaluated whether training intraverbal naming would be sufficient to establish visual-visual matching-to-sample (MTS) performances in college students. In the first experiment, we used a multiple-probe design across stimulus sets to assess whether six participants could match arbitrary visual stimuli (AB) after learning to tact their two experimentally defined classes (A’ and B’) and then intraverbally relate their names (i.e., “A’ goes with B’”). All participants matched the stimuli accurately after training, as well as emitted the trained intraverbals. In the second experiment, we used a multiple baseline design across four participants to assess whether the same training would produce bi-directional intraverbals in the form of “B’ goes with A’,” and MTS performance consistent with symmetry (BA). All participants responded accurately during matching and intraverbal tests. Across both experiments, participants stated the trained intraverbals while performing the matching task. Results showed that MTS performance can be established solely by verbal behavior training.  相似文献   
993.
This paper examines the impact of relative income on income satisfaction with given absolute income. We conducted an experiment in China where participants earned three different levels of income according to their relative performance in a task. While the treatment group was informed about their relative income, the control group only knew their own absolute income. We found that while controlling for absolute income and other factors, information about relative income increases the satisfaction of the high-income group and reduces the satisfaction of the low-income group. Relative income may interact with individual characteristics, such as gender, to affect income satisfaction. We also found that relative income treatment significantly increases income satisfaction inequality, primarily by causing social comparisons among different income groups, which has some welfare implications.  相似文献   
994.
This study analysed whether gender context is important to differences in the relationship between work–family conflict (WFC) and well-being across Europe. We hypothesised that in countries that support equality in work life and where norms support women’s employment, the relationship between WFC and low well-being is weaker than in countries with less support for gender equality. Cohabiting men and women aged 18–65 years from 25 European countries were selected from the European Social Survey. A multilevel analysis was conducted to investigate the relationship between well-being and WFC, and two measurements were used to represent gender context: gender equality in work life and norms regarding women’s employment. Contrary to the hypothesis, the results showed that the negative relationship was stronger in countries with high levels of gender equality in work life and support for women’s employment than in countries with a relatively low level of gender equality in work life and support for traditional gender relations. The context in which gender is constructed may be important when studying the relationship between WFC and well-being. In addition, emphasis should be placed on policies that equalise both the labour market and the work performed at home.  相似文献   
995.
Over the past decade, health insurance coverage has expanded dramatically in China. Health insurance benefits, however, remain shallow or ambiguous. This study examines the effect of Chinese national health insurance policy on health service utilization and economic burden in urban settings using the Urban Resident Basic Medical Insurance Household Survey. We employ the Heckman selection model to correct for selection bias among hospital inpatients, and find that compared to individuals without health insurance, those with health insurance are more likely to be admitted to the hospital when their physicians recommended them to enter the hospital as inpatients. Health insurance is also associated with about 45.6 % decrease in out-of-pocket inpatient expenditures. Individuals with urban employee basic medical insurance see the largest decrease in economic burden, followed by individuals with urban resident basic medical Insurance, and those with new rural cooperative medical insurance.  相似文献   
996.
We examine inferences about old-age mortality that arise when researchers use survey data matched to death records. We show that even small rates of failure to match respondents can lead to substantial bias in the measurement of mortality rates at older ages. This type of measurement error is consequential for three strands in the demographic literature: (1) the deceleration in mortality rates at old ages; (2) the black-white mortality crossover; and (3) the relatively low rate of old-age mortality among Hispanics, often called the “Hispanic paradox.” Using the National Longitudinal Survey of Older Men matched to death records in both the U.S. Vital Statistics system and the Social Security Death Index, we demonstrate that even small rates of missing mortality matching plausibly lead to an appearance of mortality deceleration when none exists and can generate a spurious black-white mortality crossover. We confirm these findings using data from the National Health Interview Survey matched to the U.S. Vital Statistics system, a data set known as the “gold standard” (Cowper et al. 2002) for estimating age-specific mortality. Moreover, with these data, we show that the Hispanic paradox is also plausibly explained by a similar undercount.  相似文献   
997.
998.
Given that savings behaviour and worker productivity have strong life-cycle components and given that demographic profiles vary across countries, population age structure should be linked to differences in levels of economic development. In this paper, we measure the economic importance of age structure variation for the global economy. We find that demographic maturation has been associated with nearly half of the evolution of global per capita GDP since 1960. We also find that age structure differences can account for just over half of the variation in worldwide per capita GDP (i.e. the lack of sigma convergence) observed since 1960.
Pablo Hernández de Cos (Corresponding author)Email:
  相似文献   
999.
Theory and Society - Recent empirical work has offered strong support for ‘biased pluralism’ and ‘economic elite’ accounts of political power in the United States, according...  相似文献   
1000.
Theory and Society - This article examines the connections among heuristics, the epistemological and ontological presuppositions that underlie theorizing, and substantive explanations in sociology....  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