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   3232篇
  免费   22篇
  国内免费   2篇
管理学   195篇
劳动科学   2篇
民族学   161篇
人才学   51篇
人口学   309篇
丛书文集   224篇
教育普及   3篇
理论方法论   499篇
综合类   522篇
社会学   1173篇
统计学   117篇
  2023年   6篇
  2022年   11篇
  2021年   7篇
  2020年   15篇
  2019年   13篇
  2018年   8篇
  2017年   9篇
  2016年   7篇
  2015年   23篇
  2014年   51篇
  2013年   48篇
  2012年   384篇
  2011年   256篇
  2010年   131篇
  2009年   84篇
  2008年   143篇
  2007年   184篇
  2006年   162篇
  2005年   129篇
  2004年   117篇
  2003年   97篇
  2002年   94篇
  2001年   85篇
  2000年   90篇
  1999年   59篇
  1998年   47篇
  1997年   35篇
  1996年   40篇
  1995年   45篇
  1994年   35篇
  1993年   39篇
  1992年   68篇
  1991年   62篇
  1990年   43篇
  1989年   56篇
  1988年   63篇
  1987年   64篇
  1986年   57篇
  1985年   45篇
  1984年   51篇
  1983年   45篇
  1982年   60篇
  1981年   46篇
  1980年   60篇
  1979年   14篇
  1978年   6篇
  1974年   6篇
  1973年   7篇
  1967年   6篇
  1957年   6篇
排序方式: 共有3256条查询结果,搜索用时 0 毫秒
991.
992.
This longitudinal study evaluated the learning and retention of task-specific training during the subjects' classroom performance of a one-person pivot transfer. Twelve subjects were videotaped completing the transfer (pretest). The subjects then participated in a two-hour training session. One week later (posttest 1), and one year later (posttest 2) the subjects were videotaped again. A checklist was used to analyze the videotapes. A one-way ANOVA with repeated measures revealed that there was a statistically significant difference between the tests (F = 243.73, p-value < 0.0001). A post hoc analysis (Bonferroni procedure) indicated that the posttest 1 scores (mean = 13, SD = 0.40) were significantly higher than the pretest scores (mean = 2.96, SD = 0.39) indicating an improved score on the checklist. There was no significant difference between the scores of posttest 1 and posttest 2 (mean = 12.79, SD = 0.60) indicating that subjects continued to perform the task with proper body mechanics one year post training.  相似文献   
993.
In an earlier questionnaire study, dentists reported high experienced physical work load in their profession, but low to moderate complaints from their musculoskeletal system. The correlation between reported physical work load and pain from the musculoskeletal system was weak. This discrepancy could not be satisfactorily explained. Therefore, a second study was undertaken, in which the same 27 dentists who reported musculoskeletal problems were video recorded during one hour of clinical work, and the records were later analyzed using PEO (Portable Ergonomic Observation). PEO is a frequency analysis method which allows observation of work in real time using a portable computer or video recordings. PEO can be adjusted for registration of single or multiple work operations. Output data are presented as frequency, duration, and sequence of the various work operations. The aim of the present study was to investigate if there was a relation between observed work load recorded with PEO, and subjectively estimated work load and musculoskeletal complaints recorded with a questionnaire based on Visual Analogue Scales. Sitting and standing postures, and head, trunk and arm movements were analyzed. The PEO observations showed that dentists generally perform their clinical work in a sitting position, with the head bent forward almost half of the time. Only weak to moderate correlations (r =0.0-0.6) were found between observed physical work load and subjective estimations of experienced physical work load and musculoskeletal complaints. These findings support the results in our previous study, but they do not explain the large difference between the observed low work load and the subjectively experienced high work load. The study will be followed up by EMG measurements and free interviews, where both muscular load and psychosocial factors will be evaluated.  相似文献   
994.
This study examines the distribution of psychological distress in twelve occupational groups over the decade 1987-1998 in the Quebec workforce. Cross-sectional data from the three phases of the Quebec Health and Social Survey are used with n = 9,450 in 1987, n = 10,947 in 1992 and n = 10,960 in 1998, totalling 31,357 workers aged 15 and over. Occupations are classified according to the Canadian Socio-economic Classification of Occupations. Prevalence estimates for occupational groups are computed and logistic regression analyses are conducted controlling for gender, age and marital status. The results show that the prevalence of workers with psychological distress increased sharply between 1987 and 1992 and declined back in 1998 but still increased compared to 1987. However, only non-qualified white collars, semi-qualified blue collars and male non-qualified blue collars show a significant increment in psychological distress over time. Analysis of the differentials in the prevalence of psychological distress gives greater odds of distress for supervisors, semi-qualified white and blue collar workers compared to upper managers. The odds for occupations are stable over time, gender, age and marital status. The odds of female workers significantly decreased in the three phases. It appears that the restructuring of the work environment and the perturbations in the larger society promoted an increase of psychological distress within definite segments of the workforce. The specific contribution of occupation is limited but supervisors and occupations requiring lower qualifications are more at risk regarding mental health at work.  相似文献   
995.
The aim of this article was to describe a model for evaluating and implementing cognitive-behavioral treatment for pathological gambling. The model takes into account the fact that pathological gamblers form a heterogeneous group with varied biopsychosocial characteristics.  相似文献   
996.
Few studies have evaluated the comparative efficacy, effectiveness and mode of action of specific treatment interventions, or developed evidence-based best-practice management guidelines for the treatment of problem gambling. While individual and multi-modal programmes demonstrate positive results, systematic well-designed randomised controlled studies incorporating follow-up blind assessments and standardised diagnostic and outcome measures are needed to establish long-term outcomes.  相似文献   
997.
Through European club football, we can begin to detect the outlines of a new Europe of competing cities and regions which are being disembedded from their national contexts into new transnational matrices. Focusing on a specific network of Manchester United fans, broadly located in the city of Manchester, this article examines the development of European consciousness among this group of individuals. This consciousness does not consist of a European supranationalism but rather of a new emphasis on the locale of Manchester and an increasing recognition that Manchester United and the city of Manchester must compete autonomously with other major clubs and cities in Europe.  相似文献   
998.
Using data from the National Health Interview Survey on Disability from 1994 and 1995, this research demonstrates that the size of accessibility effects (increased likelihood of using information activated by initial questions in responding to subsequent questions) can be modeled as a function of the applicability of the initial to the subsequent questions. When respondents reported a disability and were asked about the main condition causing the disability, they were more likely to report conditions they had been asked about earlier in the interview than alternative conditions. This accessibility effect was inversely related to the effect on reports of "other" or unclassifiable conditions. The more reports of primed conditions, the fewer reports of unclassifiable conditions. A log-linear model of the accessibility bias fit the data for all disabilities. For reports of specific conditions, a measure of the applicability of context accounted for 74.4 percent of the variance of the accessibility bias; for unclassifiable or "other" conditions, it accounted for 61 percent. When limited to "well-defined" disabilities, applicability accounted for 91.9 percent of the variance (a multiple correlation of.96). Finally, models of the context effects derived from the 1994 data were tested against the actual effects for the 1995 data. The correlation between predicted and actual effects was.80 across disabilities. The theoretical and the practical implications of the findings are discussed.  相似文献   
999.
Seven focus groups at a university campus were formed to identify college men's health concerns, barriers to seeking help, and recommendations to help college men adopt healthier lifestyles. Content analysis was used to identify and organize primary patterns in the focus-group data. Results of the study revealed that the college men were aware that they had important health needs but took little action to address them. The participants identified both physical and emotional health concerns. Alcohol and substance abuse were rated as the most important issues for men. The greatest barrier to seeking services was the men's socialization to be independent and conceal vulnerability. The most frequently mentioned suggestions for helping men adopt healthier lifestyles were offering health classes, providing health information call-in service, and developing a men's center. Implications of the results are discussed.  相似文献   
1000.
This article evaluates current research and theory on stalking as a form of male violence against women. The integrative contextual developmental model (White & Kowalski, 1998) suggests that stalking, as legally defined, is best understood as a multiply determined form of violence, with variables identifiable at several levels, the sociocultural, interpersonal, dyadic, situational and intrapersonal. The model also serves as a framework for identifying gaps in current research and suggests directions for further work.  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