全文获取类型
收费全文 | 17949篇 |
免费 | 302篇 |
国内免费 | 1篇 |
专业分类
管理学 | 2504篇 |
民族学 | 83篇 |
人才学 | 1篇 |
人口学 | 1863篇 |
丛书文集 | 90篇 |
教育普及 | 1篇 |
理论方法论 | 1568篇 |
现状及发展 | 1篇 |
综合类 | 219篇 |
社会学 | 8519篇 |
统计学 | 3403篇 |
出版年
2023年 | 112篇 |
2021年 | 87篇 |
2020年 | 248篇 |
2019年 | 342篇 |
2018年 | 410篇 |
2017年 | 577篇 |
2016年 | 446篇 |
2015年 | 297篇 |
2014年 | 383篇 |
2013年 | 3108篇 |
2012年 | 579篇 |
2011年 | 501篇 |
2010年 | 384篇 |
2009年 | 365篇 |
2008年 | 407篇 |
2007年 | 397篇 |
2006年 | 402篇 |
2005年 | 396篇 |
2004年 | 376篇 |
2003年 | 342篇 |
2002年 | 390篇 |
2001年 | 432篇 |
2000年 | 430篇 |
1999年 | 417篇 |
1998年 | 313篇 |
1997年 | 291篇 |
1996年 | 273篇 |
1995年 | 264篇 |
1994年 | 230篇 |
1993年 | 249篇 |
1992年 | 271篇 |
1991年 | 265篇 |
1990年 | 271篇 |
1989年 | 302篇 |
1988年 | 227篇 |
1987年 | 234篇 |
1986年 | 227篇 |
1985年 | 269篇 |
1984年 | 248篇 |
1983年 | 244篇 |
1982年 | 191篇 |
1981年 | 179篇 |
1980年 | 168篇 |
1979年 | 213篇 |
1978年 | 164篇 |
1977年 | 143篇 |
1976年 | 145篇 |
1975年 | 137篇 |
1974年 | 133篇 |
1973年 | 114篇 |
排序方式: 共有10000条查询结果,搜索用时 22 毫秒
41.
Projecting losses associated with hurricanes is a complex and difficult undertaking that is wrought with uncertainties. Hurricane Charley, which struck southwest Florida on August 13, 2004, illustrates the uncertainty of forecasting damages from these storms. Due to shifts in the track and the rapid intensification of the storm, real-time estimates grew from 2 to 3 billion dollars in losses late on August 12 to a peak of 50 billion dollars for a brief time as the storm appeared to be headed for the Tampa Bay area. The storm hit the resort areas of Charlotte Harbor near Punta Gorda and then went on to Orlando in the central part of the state, with early poststorm estimates converging on a damage estimate in the 28 to 31 billion dollars range. Comparable damage to central Florida had not been seen since Hurricane Donna in 1960. The Florida Commission on Hurricane Loss Projection Methodology (FCHLPM) has recognized the role of computer models in projecting losses from hurricanes. The FCHLPM established a professional team to perform onsite (confidential) audits of computer models developed by several different companies in the United States that seek to have their models approved for use in insurance rate filings in Florida. The team's members represent the fields of actuarial science, computer science, meteorology, statistics, and wind and structural engineering. An important part of the auditing process requires uncertainty and sensitivity analyses to be performed with the applicant's proprietary model. To influence future such analyses, an uncertainty and sensitivity analysis has been completed for loss projections arising from use of a Holland B parameter hurricane wind field model. Uncertainty analysis quantifies the expected percentage reduction in the uncertainty of wind speed and loss that is attributable to each of the input variables. 相似文献
42.
WHOSE GAY COMMUNITY? SOCIAL CLASS,SEXUAL SELF‐EXPRESSION,AND GAY COMMUNITY INVOLVEMENT 总被引:2,自引:0,他引:2
The visible and political gay community has been characterized as an increasingly middle-class, white institution. It is hypothesized that this middle-class nature requires economic and psychosocial resources that are not available to the working class and, thus, may limit the expression of sexual orientation for the working class. An analysis of data from the multicity Urban Men's Health Study supports this hypothesis. Nine of 14 hypothesized effects are statistically significant and indicate that working-class men who are homosexually active are less likely to describe themselves as gay, are more likely to have heterosexual experience, and are less likely to be involved in the gay community. Thus, it is important to incorporate class differences when addressing the social and the political dynamics of sexual orientation. 相似文献
43.
44.
I. M. Endresen B. Ellertsen C. Endresen A. M. Hjelmen R. Matre H. Ursin 《Work and stress》1991,5(3):217-227
This study concerned the immunological correlates of stress and work. Self reported stress, emotional state, ego-strength, and defensiveness were examined in relation to measures of cellular immunity (T-cell response to Con A and number of T4 and T8 cells) and humoral immunity (concentrations of immunoglobulins and complement components in plasma) in a group of 96 Norwegian female bank employees. The analyses showed that workload, the stress factor with the highest group mean, was associated with number of T-cells, while strain due to body posture during work was related to concentrations of IgM and C3. Further, depression was significantly correlated with IgM concentration and T-cell number, and anxiety with C3 concentration. T-cell activity was the immunological parameter most consistently associated with psychological well-being, showing positive correlations with defensiveness and ego-strength and negative correlations with anxiety and depression. In conclusion, T-cell number and concentrations of IgM and C3 were sensitive to both work-related stress experience and emotional distress. Coping abilities, indicated by the MMPI Ego-strength scale and emotional distress, were reflected in T-cell activity; insufficient coping was associated with low T-cell activity. 相似文献
45.
46.
47.
Graham B. Stead 《International Journal of Group Tensions》2002,31(1):79-102
Certain issues that are being debated in psychology in a post-apartheid South Africa are discussed, namely the development of professional organizations, indigenous healing and psychology, the psychometric movement, and forms of methodological inquiry. It is argued that South African psychology is striving to become more appropriate to the majority of its peoples, whether it be on the professional or research fronts. There is a desire to develop indigenous epistemologies and not to become excessively reliant on Euro-American epistemological traditions. Psychology is struggling to make mental health resources available to all South Africans. 相似文献
48.
This article is a summary of the literature published in 2001 related to career counseling and career development. The review is designed to provide information to both career practitioners and researchers, with the focus on integration of practice and research. This summary of literature is organized around 5 primary areas: (a) career development, (b) career and vocational theories, (c) career interventions, (d) career assessment, and (e) professional issues. Within the framework of this review, attention is also given to contextual factors including gender, race or ethnicity, sexual orientation, and nationality. 相似文献
49.
Reed W. Larson B. Bradford Brown Jeylan T. Mortimer 《Journal of research on adolescence》2002,12(1):iii-viii
50.
Frances B. Somerman 《Journal of Social Distress and the Homeless》1993,2(3):177-192
Basic values, attitudes toward the homeless, and specific beliefs about a proposed facility were examined, along with the NIMBY (Not In My BackYard) phenomenon, to explore if, and to what degree, these factors affect community acceptance or rejection of a facility for the homeless. Previously designed Protestant ethic (PE) and Humanitarian-Egalitarian (HE) scales were used to measure two basic values (Katz & Hass, 1988). Scales to measure attitudes toward the homeless and beliefs about a planned facility were developed. As predicted, values, attitudes, and beliefs correlated with each other and were related to plan acceptance, so that HE, pro-homeless attitudes, and positive beliefs about the plan were positively related to acceptance, and PE, anti-homeless attitudes, and negative beliefs about the plan were positively related to rejection. Also as predicted, four proximity measures were all related to acceptance of the plan. 相似文献