全文获取类型
收费全文 | 3332篇 |
免费 | 125篇 |
专业分类
管理学 | 562篇 |
民族学 | 15篇 |
人才学 | 1篇 |
人口学 | 230篇 |
丛书文集 | 26篇 |
理论方法论 | 468篇 |
综合类 | 42篇 |
社会学 | 1531篇 |
统计学 | 582篇 |
出版年
2023年 | 18篇 |
2021年 | 20篇 |
2020年 | 48篇 |
2019年 | 85篇 |
2018年 | 83篇 |
2017年 | 113篇 |
2016年 | 120篇 |
2015年 | 80篇 |
2014年 | 85篇 |
2013年 | 470篇 |
2012年 | 137篇 |
2011年 | 113篇 |
2010年 | 104篇 |
2009年 | 100篇 |
2008年 | 115篇 |
2007年 | 122篇 |
2006年 | 101篇 |
2005年 | 109篇 |
2004年 | 105篇 |
2003年 | 97篇 |
2002年 | 103篇 |
2001年 | 87篇 |
2000年 | 77篇 |
1999年 | 63篇 |
1998年 | 51篇 |
1997年 | 68篇 |
1996年 | 56篇 |
1995年 | 42篇 |
1994年 | 48篇 |
1993年 | 49篇 |
1992年 | 31篇 |
1991年 | 33篇 |
1990年 | 41篇 |
1989年 | 37篇 |
1988年 | 34篇 |
1987年 | 31篇 |
1986年 | 23篇 |
1985年 | 35篇 |
1984年 | 37篇 |
1983年 | 21篇 |
1982年 | 32篇 |
1981年 | 30篇 |
1980年 | 27篇 |
1979年 | 31篇 |
1978年 | 17篇 |
1977年 | 11篇 |
1976年 | 28篇 |
1975年 | 14篇 |
1974年 | 18篇 |
1973年 | 16篇 |
排序方式: 共有3457条查询结果,搜索用时 15 毫秒
991.
Jacques J. D. M. van Lankveld Peter J. de Jong Marcus J. M. J. Henckens Philip den Hollander Anja J. H. C. van den Hout Peter de Vries 《Journal of sex research》2018,55(6):802-813
Current models of sexual functioning imply an important role for both automatic and controlled appraisals. Accordingly, it can be hypothesized that erectile dysfunction may be due to the automatic activation of negative appraisals at the prospect of sexual intercourse. However, previous research showed that men with sexual dysfunction exhibited relatively strong automatic sex-positive instead of sex-negative associations. This study tested the robustness of this unexpected finding and, additionally, examined the hypothesis that perhaps more specific sex-failure versus sex-success associations are relevant in explaining sexual dysfunction and distress. Male urological patients (N = 70), varying in level of sexual functioning and distress, performed two Single-Target Implicit Association Tests (ST-IATs) to assess automatic associations of visual erotic stimuli with attributes representing affective valence (“liking”; positive versus negative) and sexual success versus sexual failure. Consistent with the earlier findings, the lower the scores on sexual functioning, the stronger the automatic sex-positive associations. This association was independent of explicit associations and most prominent in the younger age group. Automatic sex-positive and sex-failure associations showed independent relationships with sexual distress. The relationship between sexual distress and sex-failure associations is consistent with the view that automatic associations with failure may contribute to sexual distress. 相似文献
992.
To develop estimators with stronger efficiencies than the trimmed means which use the empirical quantile, Kim (1992) and Chen & Chiang (1996), implicitly or explicitly used the symmetric quantile, and thus introduced new trimmed means for location and linear regression models, respectively. This study further investigates the properties of the symmetric quantile and extends its application in several aspects. (a) The symmetric quantile is more efficient than the empirical quantiles in asymptotic variances when quantile percentage α is either small or large. This reveals that for any proposal involving the α th quantile of small or large α s, the symmetric quantile is the right choice; (b) a trimmed mean based on it has asymptotic variance achieving a Cramer-Rao lower bound in one heavy tail distribution; (c) an improvement of the quantiles-based control chart by Grimshaw & Alt (1997) is discussed; (d) Monte Carlo simulations of two new scale estimators based on symmetric quantiles also support this new quantile. 相似文献
993.
THE CLASSIC ECONOMIC PRODUCTION QUANTITY MODEL WITH SETUP COST AS A FUNCTION OF CAPITAL EXPENDITURE*
Peter J. Billington 《决策科学》1987,18(1):25-42
The formulation of the classic economic production quantity (EPQ) model is extended to include setup cost as a function of capital expense. Additional capital will buy reduced setup cost. Thus, the objective now is to balance holding, setup, and capital expenses. This new formulation is solved under conditions where setup cost varies exponentially and linearly as a function of capital expense. Decision rules are formulated to indicate under what conditions setup cost reduction reduces total cost. For the linear function, it is shown that once the decision to reduce setup cost is justified, the optimal choice is the minimum setup cost that is technologically feasible. 相似文献
994.
Andy Ross Ingrid Schoon Peter Martin Amanda Sacker 《Journal of marriage and the family》2009,71(1):1-14
The aim of this paper is to examine variations in the combination of social roles during times of social change. We specify a latent class approach to examine role configurations for individuals in their early 30s, establishing a typology of how work‐ and family‐related roles combine within individuals born 12 years apart and examine their antecedents. Drawing on data collected for two British Birth Cohorts born in 1958 (N = 10,706) and 1970 (N = 11,005), we provide empirical evidence of both consistency and change in life course patterns. Findings are discussed in terms of destandardization, differentiation, and individualization of the life course in times of social change and their implications for family research within a life course perspective. 相似文献
995.
Peter J. Behrens 《The American Sociologist》2009,40(3):214-227
Modern American culture has seen a proliferation of radio and television personalities associated with talk therapy and advice-giving
within the last 20 years (Epstein Psychology Today 34:5 2001). The origin of radio psychology, however, is the late 1920’s, when radio began to air many promoters of psychology in the
context of “public service” programming. Among these individuals were Louis Monash, Arthur Payne, and, perhaps most importantly,
Joseph Jastrow. Traditionally-trained psychologists used the new medium of radio in the service of education and adjustment.
This article surveys radio psychology, its personalities, and topics in the inter-war period and proposes the significant
social support role that radio psychology played during the Great Depression, much as modern talk radio does today (Ricks
1984). 相似文献
996.
997.
Lynn A. Blewett Peter Graven Jeanette Ziegenfuss Michael Davern 《Journal of Labor Research》2009,30(4):296-316
Health insurance coverage continues to be an important benefit of employment and employer-sponsored insurance is the most
prominent form of health coverage in the US. We examine trends in both employer and employee contributions to the costs of
health insurance premium between 2002 and 2005 and assess these contributions relative to changes in worker wages. We do this
for the US overall and for the 50 states plus the District of Columbia. We found a significant increase of 15.5% in the share
of total compensation going toward health benefits (from 12.3–14.2%) for workers with individual coverage and an increase
of 13.5% (from 20.6–23.4%) for workers with family coverage. Wages over this time period decreased 3.0% for workers with individual
coverage and increased 0.8% for workers with family coverage. 相似文献
998.
Patricia van Hemert Peter Nijkamp Jolanda Verbraak 《Innovation: The European Journal of Social Science Research》2009,22(4):443-464
Knowledge is gaining increasing importance in modern-day society as a factor of production and, ultimately, growth. This article explores the dynamics in university knowledge production and its effect on the state of university–industry–policy exchange in the Netherlands. Science systems are said to be in transformation. The university has evolved from performing conventional research and educational functions to serving as an innovation-promoting knowledge hub; dynamics that have received mixed reactions. The social sciences and humanities (SSH) take a special position, insofar as their focus seems primarily to be placed on conventional research and educational functions, and not directly on (commercial) valorization. Societal changes are, however, pressing for a reconsideration of the role of SSH. In our article, we distinguish between three important new movements that seem to be affecting SSH. It is believed that these movements, which are already having an impact today, will considerably influence SSH in the future. These developments are further differentiation, synthesis between the various subdisciplines of SSH and the natural sciences, and shifts in paradigms. The aims of this article are twofold: (1) to assess what is believed to be the most likely development of SSH by means of discovering relevant subsets of factors influencing university knowledge production; and (2) to discover whether the knowledge production factors show characteristics of a general development similar to the “Mode 2” concept. A systematic qualitative database was created by means of 22 semi-structured personal interviews with key representatives from business, university and the policy sector. Our explanatory framework employs an artificial intelligence method, i.e. rough set analysis. On the basis of these results, we find that a small minority of the respondents prefers a closer relationship of SSH to society, government and industry, and other institutional centers of authority, whilst interdisciplinarity in particular is regarded as having an overall positive influence on the future of SSH in the Netherlands. Consequently, the idea of a clear distinction between Mode 1 and Mode 2 knowledge production, i.e. traditional knowledge and knowledge carried out in the context of application, is not supported by our data. 相似文献
999.
Entering the debate over segmented assimilation, this paper seeks to refocus discussion on a core, but neglected claim: that inter-group disparities among immigrant offspring derive from differences in a contextual feature shared by immigrant and immigrant descendants: a nationality's mode of incorporation. The paper engages in both theoretical and empirical assessment. We critically examine the concept of mode of incorporation, demonstrating that its operational implications have not been correctly understood; consequently, the core hypothesis has never been appropriately tested. The second part of the paper implements those tests, making use of the Children of Immigrants Longitudinal Survey. We do so by using nationality as a proxy for mode of incorporation, systematically contrasting more advantaged against less advantaged nationalities. We show: (a) that tests systematically varying modes classified as more or less advantageous yield inconsistent outcomes; (b) that positive or negative modes of incorporation are associated with few long-lasting effects; (c) that differences in governmental reception are particularly unlikely to be associated with interethnic disparities; and (d) that compared to theoretically relevant nationalities, neither Mexicans, a nationality assigned to a negative mode of incorporation, nor pre-Mariel Cubans, a nationality assigned to positive mode of incorporation, prove distinctive. 相似文献
1000.
Parenthood is a significant life transition and a time of increased social support need. In newer residential areas, a lag in social infrastructure and family relocation can influence potential isolation of families with young children. This qualitative study explored the lived experiences of being connected to local communities for mothers with children aged 0–5 years. Family insights were obtained through in-depth interviews with 12 mothers who were primary caregivers, homeowners and living in newer residential areas in outer suburban Perth, Western Australia. For mothers with young children, being connected to the local community appears to be shaped from their past and present lived experience as well as future aspirations. Connectedness evolves and may develop more slowly in newer communities where social relationships and networks are often recently formed. ‘Interaction’, ‘knowing what's going on’ and ‘help is nearby if you need it’ were identified as the essential themes of connectedness for mothers and families in this study. Belonging was identified as an incidental theme as not all mothers who felt connected felt like they belonged. The findings provide insight for professionals and agencies working with families with young children as well as planners of newer residential areas. 相似文献