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   12565篇
  免费   332篇
管理学   1801篇
民族学   73篇
人才学   1篇
人口学   1295篇
丛书文集   72篇
教育普及   1篇
理论方法论   1084篇
现状及发展   2篇
综合类   146篇
社会学   6052篇
统计学   2370篇
  2023年   86篇
  2021年   75篇
  2020年   196篇
  2019年   257篇
  2018年   307篇
  2017年   407篇
  2016年   326篇
  2015年   218篇
  2014年   275篇
  2013年   2185篇
  2012年   432篇
  2011年   372篇
  2010年   296篇
  2009年   281篇
  2008年   334篇
  2007年   305篇
  2006年   280篇
  2005年   287篇
  2004年   270篇
  2003年   242篇
  2002年   281篇
  2001年   311篇
  2000年   312篇
  1999年   289篇
  1998年   197篇
  1997年   182篇
  1996年   181篇
  1995年   184篇
  1994年   150篇
  1993年   160篇
  1992年   179篇
  1991年   163篇
  1990年   175篇
  1989年   196篇
  1988年   161篇
  1987年   148篇
  1986年   155篇
  1985年   186篇
  1984年   176篇
  1983年   169篇
  1982年   137篇
  1981年   118篇
  1980年   114篇
  1979年   149篇
  1978年   97篇
  1977年   91篇
  1976年   98篇
  1975年   89篇
  1974年   86篇
  1973年   73篇
排序方式: 共有10000条查询结果,搜索用时 703 毫秒
861.
OBJECTIVE: This pilot project assessed the effectiveness of an intervention to increase knowledge and reduce risky behaviors related to cumulative trauma disorders (CTD) in office workers. STUDY DESIGN: All 124 employees from the administrative offices of a health maintenance organization were invited to participate. Subjects were followed across time using an identification number. Data were collected via questionnaire in June 1994 (pretest1) (N=84), August 1994 (pretest II) (N= 63) and September 1995 (posttest) (N=40). The yearlong intervention focused on functional activities to prevent CTD. RESULTS: of chi-square analyses for the 40 subjects who completed all surveys indicated this intervention significantly increased overall knowledge of CTD (p =.002). Significant changes in self-reported hand/wrist (p =.016) and neck/shoulder (p =.003) posture were also found. CONCLUSIONS: This study is a first step in identifying effective educational interventions to increase knowledge and reduce risk factors related to CTD in office workers.  相似文献   
862.
This article identifies the important issues addressed by programs and projects that are aimed at promoting women's equality through entrepreneurship and suggests several actions for future focus of gender programs and training. Culture was seen as a barrier to the self-confident and autonomous economic activities of women in Zimbabwe. Likewise, structural barriers such as lack of marketable skills, time and ability to travel, land and assets, education, and position as primary family providers all compounded to the problem of entrepreneurship among women. Establishment of policy approaches for women like vocational skills training augmented by training in business skills and marketing, however, are insufficient since it failed to discuss and transfer behavioral skills necessary to make one an entrepreneur. To conclude, programs must be designed to empower personal skills and self-awareness, as well as address the constraints to entrepreneurship, and macroeconomic policy change.  相似文献   
863.
Technology and social interaction: the emergence of 'workplace studies'   总被引:1,自引:0,他引:1  
Despite the substantial body of literature concerned with the ways in which digital media are transforming contemporary society and institutional life, we have relatively little understanding of the ways in which new technologies feature in day to day organizational conduct and interaction. There is however a growing corpus of empirical research which places the situated and contingent character of new technologies at the heart of the analytic agenda, but as yet, these studies are relatively little known within sociology. They include ethnographies of command and control centres, financial institutions, the news media, and the construction industry. They address the ways in which tools and technologies, ranging from paper documents through to complex multimedia systems, feature in work and collaboration. In this paper, we discuss these so-called 'workplace studies' and consider their implications for our understanding of organizational conduct, social interaction and new technology.  相似文献   
864.
This essay chooses as its texts three films representing contemporary gay male subjects from each of the "three" China's: HK, Taiwan, and the Mainland. Relocating the homoerotic image of the "sad young man," a trope popular from Hollywood rebellion films of the 1950s and 1960s, to contemporary China, I discuss how this masculine icon has been transformed from one of heroic rebellion to one of existential isolation. Indeed, as the politics of both the outmoded Confucian family and fractured Chinese nationhood intersect, what the sad young (gay) man rebels against is a political fluctuation which is no longer fixed; as the young man's opposition is no longer fixed, so too does he become alienated even from his own rebellious cause.  相似文献   
865.
A mathematical model of receptor-mediated gene expression that includes receptor binding of natural and xenobiotic ligands, protein synthesis and degradation, and metabolism of the xenobiotic ligand was created to identify the determinants of the shape of the dose-response profile. Values of the model's parameters were varied to reflect alternative mechanisms of expression of the protein. These assumptions had dramatic effects on the computed response to a bolus dose of the xenobiotic ligand. If all processes in the model exhibit hyperbolic kinetics, the dose-response curves can appear sigmoidal but actually be linear with a positive slope at low doses. The slope of the curve only approached zero at low dose, indicative of a threshold for response, if binding of the xenobiotic ligand to the receptor exhibited positive cooperativity (ligand binding at one site increases the affinity for ligand at another binding site on the receptor). Positive cooperativity in the rate-limiting step of protein synthesis produced dose-response curves which were "U-shaped" at low doses, also indicative of a threshold. Positive cooperativity in the metabolism of the xenobiotic ligand produced dose-response curves that increased more rapidly than linearly with increasing dose. The model illustrates the fact that response cannot be predicted from qualitative mechanistic arguments alone; any assessment of risk to health from xenobiotic chemicals must be based on a detailed quantitative examination of the kinetic behavior of each chemical species individually.  相似文献   
866.
Trust in risk information about food related-hazards may be an important determinant of public reactions to risk information. One of the central questions addressed by the risk communication literature is why some individuals and organizations are trusted as sources of risk information and others are not. Industry and government often lack public trust, whereas other sources (for example, consumer organizations, the quality media, medical doctors) are highly trusted. Problematically, previous surveys and questionnaire studies have utilized questions generated by the investigators themselves to assess public perceptions of trust in different sources. Furthermore, no account of the hazard domain was made. In the first study reported here, semistructured interviewing was used to elicit underpinning constructs determining trust and distrust in different sources providing food-related risk information ( n = 35). In the second study, the repertory grid method was used to elicit the terminology that respondents use to distinguish between different potential food-related information sources ( n = 35), the data being submitted to generalised Procrustes analysis. The results of the two studies were combined and validated in survey research ( n = 888) where factor analysis indicated that knowledge in itself does not lead to trust, but that trusted sources are seen to be characterised by multiple positive attributes. Contrary to previous research, complete freedom does not lead to trust—rather sources which possess moderate accountability are seen to be the most trusted.  相似文献   
867.
Most public health risk assessments assume and combine a series of average, conservative, and worst-case values to derive a conservative point estimate of risk. This procedure has major limitations. This paper demonstrates a new methodology for extended uncertainty analyses in public health risk assessments using Monte Carlo techniques. The extended method begins as do some conventional methods--with the preparation of a spreadsheet to estimate exposure and risk. This method, however, continues by modeling key inputs as random variables described by probability density functions (PDFs). Overall, the technique provides a quantitative way to estimate the probability distributions for exposure and health risks within the validity of the model used. As an example, this paper presents a simplified case study for children playing in soils contaminated with benzene and benzo(a)pyrene (BaP).  相似文献   
868.
869.
Given the global changes in how work is conceptualized, organized and performed [8], it is critical that graduating occupational therapists have an up-to-date knowledge of work and work practice. This article briefly explores the relative dearth of work practice courses in current occupational therapy curricula and presents the rationale for developing a model for teaching and learning about occupational therapy work practice. It introduces a client-centered and occupation-focused model developed for an undergraduate work practice course and describes the use of the model in a specific course. The model identifies eight common work-related areas of concern - values clarification, vocational exploration, vocational choice, job search, starting work, maintaining work, returning to work and leaving work. Occupational Therapy tools, techniques and programs which may be useful in addressing these concerns; and the environmental factors that influence therapist and client in addressing work issues are also part of the model. The article concludes with examples of topics and issues which could be explored using this teaching and learning model.  相似文献   
870.
The article describes the technology transfer concerns reported by a small sample (N=14) of recent college graduates with disabilities. In structured, in-depth interviews, researchers asked respondents to reflect on the extent to which they had utilized technology resources during their college years in preparation for the world of work. Results suggest that colleges and universities need to play a more active role in introducing students with disabilities to both generalized and assistive technology services.  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