全文获取类型
收费全文 | 1833篇 |
免费 | 117篇 |
专业分类
管理学 | 133篇 |
民族学 | 8篇 |
人才学 | 1篇 |
人口学 | 170篇 |
丛书文集 | 13篇 |
理论方法论 | 282篇 |
综合类 | 20篇 |
社会学 | 1204篇 |
统计学 | 119篇 |
出版年
2023年 | 22篇 |
2022年 | 8篇 |
2021年 | 14篇 |
2020年 | 56篇 |
2019年 | 57篇 |
2018年 | 84篇 |
2017年 | 112篇 |
2016年 | 90篇 |
2015年 | 56篇 |
2014年 | 56篇 |
2013年 | 348篇 |
2012年 | 83篇 |
2011年 | 82篇 |
2010年 | 60篇 |
2009年 | 53篇 |
2008年 | 77篇 |
2007年 | 70篇 |
2006年 | 70篇 |
2005年 | 57篇 |
2004年 | 66篇 |
2003年 | 45篇 |
2002年 | 46篇 |
2001年 | 37篇 |
2000年 | 18篇 |
1999年 | 16篇 |
1998年 | 19篇 |
1997年 | 14篇 |
1996年 | 9篇 |
1995年 | 12篇 |
1994年 | 16篇 |
1993年 | 19篇 |
1992年 | 11篇 |
1991年 | 8篇 |
1990年 | 14篇 |
1989年 | 9篇 |
1988年 | 11篇 |
1987年 | 7篇 |
1986年 | 10篇 |
1985年 | 11篇 |
1984年 | 19篇 |
1983年 | 11篇 |
1982年 | 4篇 |
1981年 | 13篇 |
1980年 | 9篇 |
1979年 | 5篇 |
1978年 | 5篇 |
1977年 | 4篇 |
1975年 | 9篇 |
1974年 | 3篇 |
1967年 | 3篇 |
排序方式: 共有1950条查询结果,搜索用时 109 毫秒
171.
Positive youth development is conceptualized within a developmental systems theoretical model. The role of thriving processes and civic engagement in positive youth development is discussed. 相似文献
172.
The use of 3,4-methylenedioxymethamphetamine (MDMA or "ecstasy") appears to be increasing worldwide, with "rave" attendees being one high-risk population. To date, however, only one study has collected ecstasy use information from rave attendees in the United States. To address this limitation, we collected self-report drug use information from 70 adult "club rave" attendees within the Baltimore-Washington corridor in April and May 2002. Data collection was scheduled between 12 A.M. and 5 A.M. Participation rates were high, with 85 percent of the club rave attendees completing the interview. Eighty-six percent of the respondents reported lifetime ecstasy use, 51 percent reported 30-day use, and 30 percent reported using ecstasy within the two days preceding the interview. While past-year ecstasy users were comparable to non-users with respect to a host of demographic and drug use variables, non-ecstasy users were significantly more likely than past-year users to perceive risks associated with the regular use of alcohol and ecstasy. Not surprisingly, non-ecstasy users were significantly more likely than past-year users to perceive harmful long-term physical and psychological effects associated with ecstasy ingestion. These findings suggest that rave attendees may be an important population for ecstasy-related prevention efforts. 相似文献
173.
Arnold EM Kirk RS Roberts AC Griffith DP Meadows K Julian J 《Journal of child sexual abuse》2003,12(1):123-139
This study examined the psychosocial functioning of 100 adolescent females (ages 12-17) sentenced to secure care in a southeastern state and the impact of gender-specific, cognitive-behavioral therapy (CBT) intervention on the psychosocial functioning of subjects who reported a history of sexual abuse. The Multidimensional Adolescent Assessment Scale (MAAS) was used to assess psychosocial functioning. Pre-test scores on the MAAS revealed significantly higher scores on 12 of 16 dimensions of psychosocial functioning and higher rates of serious criminal behavior for youth who subsequently disclosed sexual abuse histories as compared to those without such histories. At post-test, statistically significant improvements in psychosocial functioning were observed on 14 of 16 MAAS subscales for those who received the CBT intervention. Thus, incarcerated female adolescents who reported a history of sexual abuse demonstrated more impairment in their functioning as compared to those without a reported history of sexual abuse and responded positively to gender-specific, CBT-based intervention. 相似文献
174.
Louisa Degenhardt Carolyn Day Elizabeth Conroy Stuart Gilmour 《Journal of sex research》2013,50(2):107-114
We examined potential links between cocaine use and street‐based sex work in New South Wales, Australia, following reports of increased cocaine use among injection drug users (IDU). Police data on prostitution and possession/use of cocaine was analysed using time series analysis. Interviews with key informants and IDU were also conducted, and data on cocaine use from ongoing monitoring systems targeted at IDU were analyzed. There was a clear increase in cocaine use among IDU which occurred in 2001. This occurred at the same time as an increase in prostitution offenses. Qualitative data suggested a greater number of primary heroin users were engaging in street‐based sex work, which was driven in part by the increases in cocaine use among this group. Subsequent reductions in cocaine availability led to decreased cocaine use and possession offenses, along with reductions in prostitution offenses. 相似文献
175.
Elizabeth González-Estrada 《统计学通讯:模拟与计算》2013,42(3):557-562
In this article, a technique based on the sample correlation coefficient to construct goodness-of-fit tests for max-stable distributions with unknown location and scale parameters and finite second moment is proposed. Specific details to test for the Gumbel distribution are given, including critical values for small sample sizes as well as approximate critical values for larger sample sizes by using normal quantiles. A comparison by Monte Carlo simulation shows that the proposed test for the Gumbel hypothesis is substantially more powerful than some other known tests against some alternative distributions with positive skewness coefficient. 相似文献
176.
Elizabeth McPhee 《Risk analysis》2011,31(1):171-183
The risk perception research is widely focused on children as targets of risk. To date, very few studies have consulted with the impacted group to assess the perceptions of risk associated with the exposures of interest. Much less research has investigated the experiences of children at risk for anaphylaxis, their concerns, and the psychosocial stresses associated with risk. The present study explores the perceptions and experiences of Ontario students with anaphylaxis, and their parents regarding school as a safe place in order to inform school policy around risk management and coping. A “child‐centered” analytical framework incorporating illustrative techniques within interpretative analysis is outlined. Five prominent themes: (a) social and environmental barriers to safety, (b) coping strategies, (c) emotional burden of responsibility, (d) balance of responsibility (transitions), and (e) redefining “normal” are discussed. Results found that “child‐centered” techniques empowered children in a process that is meaningful and relevant to their lives. A preliminary framework for understanding what risk means to children highlighted the differences in how they cope in the public sphere of school. 相似文献
177.
Elizabeth Ann Whitaker Janet L. Bokemeiner Scott Loveridge 《Journal of Family and Economic Issues》2013,34(1):105-119
This study looks at how gender relates to a critical economic behavior—savings activity. We start with the proposition that gender is not merely an additional variable to explain savings choices. Gender is the primary type of social categorization in the U.S. today. Therefore, other variables will be differently relevant to savings depending on gender. We use a national survey, the 2006 Economic Decision Making Survey conducted by Michigan State University’s Institute for Public Policy and Social Research, to examine the proposition. Basic frequencies reveal nonsignificant differences in savings participation across gender, but regression analysis including interactions of gender with other key variables reveals that multiple aspects of individuals’ lives are influenced by gender to predict savings plan participation. 相似文献
178.
179.
180.