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   7955篇
  免费   110篇
管理学   1187篇
民族学   27篇
人口学   765篇
丛书文集   26篇
理论方法论   592篇
综合类   105篇
社会学   3371篇
统计学   1992篇
  2020年   117篇
  2019年   151篇
  2018年   217篇
  2017年   272篇
  2016年   189篇
  2015年   131篇
  2014年   190篇
  2013年   1315篇
  2012年   258篇
  2011年   241篇
  2010年   178篇
  2009年   170篇
  2008年   145篇
  2007年   183篇
  2006年   160篇
  2005年   161篇
  2004年   146篇
  2003年   143篇
  2002年   149篇
  2001年   197篇
  2000年   189篇
  1999年   172篇
  1998年   129篇
  1997年   126篇
  1996年   126篇
  1995年   106篇
  1994年   104篇
  1993年   97篇
  1992年   140篇
  1991年   119篇
  1990年   116篇
  1989年   111篇
  1988年   96篇
  1987年   90篇
  1986年   95篇
  1985年   107篇
  1984年   112篇
  1983年   123篇
  1982年   98篇
  1981年   88篇
  1980年   85篇
  1979年   94篇
  1978年   90篇
  1977年   80篇
  1976年   67篇
  1975年   67篇
  1974年   58篇
  1973年   58篇
  1972年   41篇
  1971年   49篇
排序方式: 共有8065条查询结果,搜索用时 0 毫秒
991.
A sample of 1,004 eighth and tenth grade students in twenty-three small Central/East Texas communities was assessed to determine 1) their perception of the number of their friends who use drugs, 2) the amount of information they received about drugs from their friends, and 3) the connection between those perceptions and drug use. A multiple regression model which included grade, gender, the degree to which friends are perceived to use drugs and the amount of information about drugs received from friends explained 39 percent of the variance in the degree to which rural adolescents were involved in drug use. An item specific analysis of the subcomponents of these composite variables explained 44 percent of the variance in the degree to which rural adolescents were involved in drug use. This same four-factor model accurately classified over 81 percent of non-drug-users and 67 percent of users using discriminant analysis. Students who perceived a higher degree of drug use among their friends and who received more information about drugs from their friends used drugs more frequently. Lower marijuana use in these rural areas as compared to the nation, both as a peer perception and as a fact, may protect these students to a degree from broader patterns of drug use. The findings of this study support the theory that peer pressure is related to drug abuse, even in rural areas.  相似文献   
992.
Happy or disturbing events may occur in a therapist's life during the course of treatment that intrude on the therapeutic process whether or not their true nature is disclosed to the patient. Therapists are not immune from experiencing acute, chronic, and even terminal illnesses, divorce, remarriage, adopting a child, mourning the death of a parent or significant other, or major accomplishments. In many instances such events affect the treatment process by disrupting appointments, necessitating sudden absences, restricting a therapist's emotional availability and physical stamina, or altering the therapist's mood and affect. In other instances, patients may be aware of such events, at least unconsciously, because of subtle changes in the therapist. Drawing on self psychology and intersubjectivity this paper explores the reasons for therapist self-disclosure of these events based on an assessment of the patient's developmental needs and the nature of the transference. It will discuss ways of making such disclosures therapeutic.  相似文献   
993.
Absenteeism, turnover and disability, and relationships between them have been studied among city bus drivers in the Netherlands. The theoretical framework for the study was a cumulative process model of work and health. Absenteeism among these drivers was two to three times as high as the national average, while the risk of disablement was more than twice as high as the risk for male Dutch civil servants in general. Bus drivers who had to leave their job for medical reasons did so at a younger age than other groups of civil servants. The main conditions leading to disablement related to the back, tendons and joints (35%), mental disorders (35%) and cardiovascular diseases (12%). It was shown that long-term absenteeism is a strong precursor of future disability. The research suggests a work-related process of progressive deterioration of health and well-being over a reasonably long period of time. Driving city buses seems to be an occupation with high risks for health and well-being.  相似文献   
994.
CIGARETTE TAXES AND THE MASTER SETTLEMENT AGREEMENT   总被引:1,自引:0,他引:1  
In 1998, 46 states and the four major tobacco companies entered into the Master Settlement Agreement (MSA), which stipulated that the tobacco companies pay the states $206 billion over the next several years. Mean cigarette excise taxes rose substantially, nearly 90%, between 1998 and 2002. The goal of our empirical analysis is to assess whether the changes in cigarette excise taxes can be attributed to litigation brought by the states and the resulting settlements. Using a panel data difference-in-difference approach, the evidence suggests that litigation increased excise taxes: state cigarette excise taxes were approximately $0.10 higher post-MSA. (JEL H2, I1 )  相似文献   
995.
996.
997.
998.
999.
1000.
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