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   10448篇
  免费   358篇
  国内免费   1篇
管理学   1316篇
民族学   75篇
人口学   1095篇
丛书文集   39篇
理论方法论   918篇
综合类   155篇
社会学   5146篇
统计学   2063篇
  2023年   90篇
  2022年   57篇
  2021年   81篇
  2020年   229篇
  2019年   253篇
  2018年   399篇
  2017年   527篇
  2016年   383篇
  2015年   246篇
  2014年   309篇
  2013年   1921篇
  2012年   490篇
  2011年   324篇
  2010年   246篇
  2009年   228篇
  2008年   237篇
  2007年   215篇
  2006年   243篇
  2005年   210篇
  2004年   194篇
  2003年   181篇
  2002年   198篇
  2001年   198篇
  2000年   188篇
  1999年   184篇
  1998年   148篇
  1997年   148篇
  1996年   142篇
  1995年   118篇
  1994年   125篇
  1993年   120篇
  1992年   126篇
  1991年   138篇
  1990年   133篇
  1989年   158篇
  1988年   93篇
  1987年   117篇
  1986年   99篇
  1985年   120篇
  1984年   99篇
  1983年   107篇
  1982年   82篇
  1981年   85篇
  1980年   80篇
  1979年   85篇
  1978年   90篇
  1977年   63篇
  1976年   70篇
  1975年   68篇
  1974年   62篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
801.
Levetown M  Hayslip B  Peel J 《Omega》1999,40(2):323-333
The Physicians' End-of-Life Care Attitude Scale (PEAS) was developed as an outcome measure for palliative care education. PEAS assesses the willingness of medical trainees to care for dying patients. Sixty-four Likert-type questions were created on the basis of discussions with focus groups of medical trainees, then administered to sixty-two medical students and residents. Total PEAS scores as well as personal preparation and professional role subscales (where higher scores indicated greater concern) possessed excellent internal consistency and reliability. In addition, there were substantial correlations between PEAS scores and the CA-Dying scale, a measurement of laypersons' fears about interacting with dying persons. Thus, PEAS adequately assesses the unique communication concerns of physicians in training regarding working with dying persons and their families. Correlations between PEAS scores and age were negative, while those who had experienced the death of a loved one had higher PEAS scores than those who did not. This suggests that for some persons, life experiences may lessen difficulties in dealing with dying persons, while for others, personal losses may exacerbate such concerns. The utility of PEAS in evaluating the efficacy of palliative care education as well as its potential to measure medical trainee's willingness to care for the terminally ill is discussed.  相似文献   
802.
Health Risk Assessment of a Modern Municipal Waste Incinerator   总被引:2,自引:0,他引:2  
During the modernization of the municipal waste incinerator (MWI, maximum capacity of 180,000 tons per year) of Metropolitan Grenoble (405,000 inhabitants), in France, a risk assessment was conducted, based on four tracer pollutants: two volatile organic compounds (benzene and 1, 1, 1 trichloroethane) and two heavy metals (nickel and cadmium, measured in particles). A Gaussian plume dispersion model, applied to maximum emissions measured at the MWI stacks, was used to estimate the distribution of these pollutants in the atmosphere throughout the metropolitan area. A random sample telephone survey (570 subjects) gathered data on time-activity patterns, according to demographic characteristics of the population. Life-long exposure was assessed as a time-weighted average of ambient air concentrations. Inhalation alone was considered because, in the Grenoble urban setting, other routes of exposure are not likely. A Monte Carlo simulation was used to describe probability distributions of exposures and risks. The median of the life-long personal exposures distribution to MWI benzene was 3.2·10–5 g/m3 (20th and 80th percentiles = 1.5·10–5 and 6.5·10–5 g/m3), yielding a 2.6·10–10 carcinogenic risk (1.2·10–10–5.4·10–10). For nickel, the corresponding life-time exposure and cancer risk were 1.8·10–4 g/m3 (0.9.10–4 – 3.6·10–4 g/m3) and 8.6·10–8 (4.3·10–8–17.3·10–8); for cadmium they were respectively 8.3·10–6 g/m3 (4.0·10–6–17.6·10–6) and 1.5·10–8 (7.2·10–9–3.1·10–8). Inhalation exposure to cadmium emitted by the MWI represented less than 1% of the WHO Air Quality Guideline (5 ng/m3), while there was a margin of exposure of more than 109 between the NOAEL (150 ppm) and exposure estimates to trichloroethane. Neither dioxins nor mercury, a volatile metal, were measured. This could lessen the attributable life-long risks estimated. The minute (VOCs and cadmium) to moderate (nickel) exposure and risk estimates are in accord with other studies on modern MWIs meeting recent emission regulations, however.  相似文献   
803.
Sometimes conducting an experiment to ascertain the state of a system changes the state of the system being measured. Kahneman & Tversky modelled this effect with support theory. Quantum physics models this effect with probability amplitude mechanics. As this paper shows, probability amplitude mechanics is similar to support theory. Additionally, Viscusi's proposed generalized expected utility model has an analogy in quantum mechanics.  相似文献   
804.
The authors use longitudinal data from the National Longitudinal Survey of Youth to investigate whether the wage trajectories of male high school dropouts are affected by the acquisition of the General Educational Development (GED) credential, by postsecondary education, and by training. The authors show that acquisition of the GED results in wage increases for dropouts who left school with weak skills, but not for dropouts who left high school with stronger skills. College and training provided by employers are associated with higher wages for male dropouts.  相似文献   
805.
Although male sexual abuse has co-existed with female sexual abuse, the professional literature has paid minimal attention to the impact of sexual abuse of male children to their adult adaptation. This paper concentrates on the negative impact of sexual abuse on the adult male's gender identity. Examples of eight male clients' responses to sexual abuse in their adult life and the therapeutic framework utilized to work with them are discussed in the paper.This paper was originally presented at the ICAPP conference, 1993.He teaches advanced clinical practice, Human Behavior and AIDS ELECTIVE. He maintains a private practice specializing in Gay men, persons with HIV virus.  相似文献   
806.
807.
808.
Disability issues are achieving increasing prominence in Great Britain and the rest of Europe. However, many of the main arguments, particularly those emphasizing social barriers models of disability, are located within structuralist frameworks. This can be regarded as problematic, as poststructural and postmodern orientations challenge the basic tenets of such formulations. This article explores the making of links between modern and structural and postmodern and poststructural perspectives using a gendered analysis drawn from feminism. It then examines the applicability of the resultant analysis for disability issues, social work and research. In conclusion, it is suggested that the making of such links can enable us to accept and effectively utilize difference and diversity, contradiction, change and fluidity without losing sight of enduring social divisions and associated oppressive responses.  相似文献   
809.
This article discusses the reciprocal relationship between public pension policy and age-based politics in Brazil, a nation with a public pension system that has the potential for influencing policy developments in other developing nations faced with the problem of how to extend social security coverage to the entire population. Our goal is to extend a line of analysis used in previous studies of industrial nations to the case of Brazil. Pension policy changes made during the 1960s and 1970s had a number of unintended consequences. One was the role these policy changes played with respect to the emergence of rural unions and age-based interest groups: both are becoming increasingly important actors with respect to pension policy. We discuss the implications of the Brazilian case for policy options and outcomes in other newly democratic nations, particularly those in Latin America.  相似文献   
810.
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