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   3694篇
  免费   64篇
管理学   560篇
民族学   32篇
人才学   1篇
人口学   336篇
丛书文集   31篇
理论方法论   346篇
综合类   21篇
社会学   1896篇
统计学   535篇
  2023年   18篇
  2021年   24篇
  2020年   54篇
  2019年   77篇
  2018年   78篇
  2017年   98篇
  2016年   93篇
  2015年   82篇
  2014年   79篇
  2013年   694篇
  2012年   93篇
  2011年   108篇
  2010年   91篇
  2009年   76篇
  2008年   114篇
  2007年   114篇
  2006年   80篇
  2005年   93篇
  2004年   91篇
  2003年   89篇
  2002年   116篇
  2001年   84篇
  2000年   82篇
  1999年   64篇
  1998年   58篇
  1997年   58篇
  1996年   45篇
  1995年   61篇
  1994年   54篇
  1993年   50篇
  1992年   45篇
  1991年   52篇
  1990年   42篇
  1989年   40篇
  1988年   59篇
  1987年   57篇
  1986年   26篇
  1985年   39篇
  1984年   46篇
  1983年   57篇
  1982年   32篇
  1981年   35篇
  1980年   29篇
  1979年   34篇
  1978年   39篇
  1977年   31篇
  1976年   35篇
  1975年   28篇
  1974年   18篇
  1972年   17篇
排序方式: 共有3758条查询结果,搜索用时 9 毫秒
281.
This article estimates the effects on U.S. output and employment of granting most-favored-nation (MFN) tariff treatment to imports from the People's Republic of China (PRC). Import demand elasticities are used to estimate changes in imports resulting from the lower tariff rates. A highly disaggregated U.S. input-output table and labor-output ratios are used to convert changes in imports into changes in domestic output and employment at a detailed sectorial level. U.S. import restraints on the textile and apparel industry are incorporated into the analysis. The article explores the implications of increased imports from the PRC for U.S., PRC, and LDC policy makers.  相似文献   
282.
The display and regulation of child anger in family interaction was coded in a sample of 240 boys and girls at child age 6, and coded using the Specific Affect Coding System. Child antisocial behavior was longitudinally assessed, beginning in kindergarten. Pooled‐ and family‐level analyses were used to assess hazard rates for child anger. Parents’ ability to modulate their own emotions and negative behavior, and children's ability to down‐regulate anger were associated with increased latency for child anger. Hazard for child anger increased as parents’ insensitive and negative responses toward the child cumulated during family interaction. Macro‐level, non‐hazard analyses indicated that chronic levels of child antisocial behavior were associated with the frequency of parental negative behavior, but not with the frequency of child anger. Micro‐level hazard analyses indicated that children's ability to regulate anger was related to chronic levels of child covert but not overt antisocial behavior.  相似文献   
283.
284.
Many influential analyses of West Africa take it for granted that ‘original’ forest cover has progressively been converted and savannized during the twentieth century by growing populations. By testing these assumptions against historical evidence, exemplified for Ghana and Ivory Coast, this article shows that these neo‐Malthusian deforestation narratives badly misrepresent people–forest relationships. They obscure important nonlinear dynamics, as well as widespread anthropogenic forest expansion and landscape enrichment. These processes are better captured, in broad terms, by a neo‐Boserupian perspective on population–forest dynamics. However, comprehending variations in locale‐specific trajectories of change requires fuller appreciation of social differences in environmental and resource values, of how diverse institutions shape resource access and control, and of ecological variability and path dependency in how landscapes respond to use. The second half of the article présents and illustrates such a “landscape structuretion” perspective through case studies from the forest–savanna transition zones of Ghana and Guinea.  相似文献   
285.
This paper examines the relationship between the entry of the baby boom into the workforce and the productivity slowdown. Lucas (Bell J Econ 9(2):508–523, 1978) shows how management quality plays a role in determining output. The baby boom’s entry into the workforce resulted in more managers from smaller, pre-baby boom cohorts. These marginal managers were necessarily of lower quality, leading to a drop in total factor productivity. As the boomers aged, this effect was reversed. A calibrated model of managers, workers, and firms suggests that the management effects of the baby boom may explain roughly 20% of the observed productivity slowdown and resurgence.  相似文献   
286.
This paper reports the development and validation of the Neighborhood Observation Scale, a 41 item measure of neighborhood physical appearance, social appearance, safety, and amenities. Three independent ratings were collected on each of 244 neighborhoods in 132 census block groups in five South Carolina counties, for a total of 732 observations. Inter-rater reliability analysis showed 92.6% agreement among at least two raters and an intraclass correlation of .54, indicating acceptable reliability. Exploratory factor analysis extracted eight factors for neighborhood physical appearance, school/park/public space physical appearance, neighborhood social appearance, indicated social engagement, observed social engagement, park/public space social engagement, resident watchfulness, and neighborhood safety risk. A follow-up confirmatory factor analysis supported the eight factor structure. Reliability analysis produced alpha coefficients ranging from .55 to .94 for the eight factors, indicating reliability for use as sub-scales. Convergent validity was determined by generally acceptable correlations of the factor sub-scales with measures of neighborhood distress, rates of child maltreatment and ICD-9-CM coded child injuries, and resident perceptions of neighboring, collective efficacy, reciprocal helping, and children’s safety in the home. Implications for research and policy and program development are discussed.  相似文献   
287.
With the high number of homeless, there is a critical need for rapid and accurate assessment of quality of life to assess program outcomes. The World Health Organization’s WHOQOL-100 has demonstrated promise in accurately assessing quality-of-life in this population. However, its length may make large scale use impractical for working with a homeless population. The World Health Organization Quality of Life—Brief version (WHOQOL-BREF), though providing a shorter instrument and being, theoretically, more manageable has not been evaluated for use with homeless individuals. This study evaluated the psychometric properties of the WHOQOL-BREF in 389 homeless veterans. Adequate internal consistency for all domains was found and validity for each domain was supported using the Personality Assessment Inventory. The WHOQOL-BREF provides a reliable, valid, and brief assessment of quality-of-life. Due to the length of the instrument and the domains covered, it could have great utility in the assessment of homeless populations with multiple problem domains.  相似文献   
288.
Extract

I have suggested that at a given birth order the probability of having a further pregnancy is greater when the last pregnancy had been spontaneously aborted than when it resulted in a birth.2 Léridon,3in the course of a valuable paper on foetal wastage, presents data which, according to him, impugn my suggestion. I would like to question his claim.  相似文献   
289.
Numerous studies suggest spirituality and subjective well-being (SWB) are positively associated. However, critics argue that popular spirituality instruments—including the Daily Spiritual Experiences Scale (DSES)—contain items that conflate religiosity/spirituality (R/S), prosociality and SWB. Advocates of the DSES retort that, despite this concern, the available evidence confirms a single underlying factor. The current paper evaluates the DSES’s development, factor structure, reliability and convergent and predictive validity using a community sample. Despite the full DSES scale’s excellent internal reliability, two related factors—theism and civility—are identified. Both scales are reliable and converge meaningfully with related R/S measures. As expected, given previous findings, the full DSES scale predicts higher SWB yet the two subscales display divergent associations. This finding offers new insights into the DSES and raises questions about the claimed belief-as-benefit effect.  相似文献   
290.

Life satisfaction can be assessed either globally or with regard to satisfaction with specific domains of life. The latter multidimensional approach presumes science has delineated with confidence the specific domains most relevant to evaluating whether the criteria for a good life have been met. This paper shares results of a qualitative study of the perceived determinants of life satisfaction among 30 high school students who were diverse in terms of mental health; 6–10 participants were classified as complete mental health, vulnerable, symptomatic but content, or troubled at two time points separated by a year. Thematic analyses of transcribed individual interviews suggested eight themes that capture the domains of life adolescents perceive influence their happiness. These themes are compared and contrasted to domains included in existing multi-dimensional measures of youth life satisfaction. The factors likely to be particularly salient to students with different levels of mental health are noted.

  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