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   12311篇
  免费   550篇
  国内免费   15篇
管理学   279篇
民族学   417篇
人才学   2篇
人口学   239篇
丛书文集   1333篇
理论方法论   587篇
综合类   6742篇
社会学   1185篇
统计学   2092篇
  2023年   32篇
  2022年   26篇
  2021年   41篇
  2020年   75篇
  2019年   229篇
  2018年   387篇
  2017年   716篇
  2016年   174篇
  2015年   160篇
  2014年   401篇
  2013年   1051篇
  2012年   498篇
  2011年   419篇
  2010年   423篇
  2009年   426篇
  2008年   516篇
  2007年   646篇
  2006年   694篇
  2005年   790篇
  2004年   756篇
  2003年   799篇
  2002年   643篇
  2001年   741篇
  2000年   426篇
  1999年   240篇
  1998年   98篇
  1997年   74篇
  1996年   129篇
  1995年   123篇
  1994年   117篇
  1993年   77篇
  1992年   86篇
  1991年   59篇
  1990年   48篇
  1989年   33篇
  1988年   34篇
  1987年   3篇
  1986年   4篇
  1985年   116篇
  1984年   113篇
  1983年   76篇
  1982年   76篇
  1981年   71篇
  1980年   69篇
  1979年   63篇
  1978年   57篇
  1977年   11篇
  1976年   17篇
  1975年   10篇
  1973年   2篇
排序方式: 共有10000条查询结果,搜索用时 17 毫秒
1.
Abstract

A context-dependence paradigm was developed for research into effects of the menstrual cycle in women. This involved the investigation of situational effects on self-reported distress in both men and women. For 35 consecutive days, 25 women and 36 men working in two occupations that varied in degree of situational stress completed Body Awareness Questionnaires (modified menstrual distress questionnaires) and daily subjective stress ratings. After controlling for contraceptive use, age range, and percentage of body fat, the following variables were selected for a multiple regression analysis as predictors of distress: (a) job stress, (b) feminine values, (c) life stress, (d) subjective stress, (e) type of job, (f) sex, (g) job experience, and (h) history of menstrual distress. Women working in the high-stress job (military police) reported significantly more distress than all the other groups. Life stress was identified as the dominant predictor of distress. In a separate analysis of daily distress scores and menstrual cycle phases for all the women, there was no interaction between the type of job and the menstrual cycle phase on reports of distress. A similar analysis of the effects on sex and shift revealed shift effects in distress for men but not women. Sources of variability for both sexes (shift-work rotation and cycle phase) are discussed.  相似文献   
2.
The economically optimal sample size in a food safety test balances the marginal costs and marginal benefits of increasing the sample size. We provide a method for selecting the sample size when testing beef trim for Escherichia coli O157:H7 that equates the averted costs of recalls and health damages from contaminated meats sold to consumers with the increased costs of testing while allowing for uncertainty about the underlying prevalence rates of contamination. Using simulations, we show that, in most cases, the optimal sample size is larger than the current sample size of 60 and, in some cases, it exceeds 120. Moreover, lots with a lower prevalence rate have a higher expected damage because contamination is more difficult to detect. Our simulations indicate that these lots have a higher optimal sampling rate.  相似文献   
3.
The Fish Invasiveness Scoring Kit (FISK) is currently one of the most popular pre‐screening tools for freshwater fishes. A recent upgrade has ensured its wider climatic relevance to countries with subtropical regions. This enhancement is of particular importance to Australia, which encompasses tropical, arid, and temperate zones, and where the introduction of non‐native fish species poses a significant risk to biodiversity. In this study, 55 fish species previously evaluated in a U.K.‐based calibration of FISK are reassessed for their potential invasiveness in the Murray‐Darling Basin (MDB; southeastern Australia), the continent's largest catchment encompassing arid and temperate climates. Approximately half of the species were classed as “medium risk” and the other half as “high risk,” and the ≥19 threshold previously identified from the calibration study was confirmed. The three highest scoring species (common carp Cyprinus carpio carpio, goldfish Carassius auratus, and eastern mosquitofish Gambusia holbrooki) were those already present and invasive in the area, whereas nearly half of the tropical and subtropical species had lower scores compared to U.K. assessments, possibly because of climate change predictions of drier conditions across the MDB. There were some discordances between FISK and two Australian‐based assessment protocols, one of which is qualitative and the other represents a simplified version of FISK. Notably, the Australian origins of FISK should provide for an additional reason for further applications of the tool in other RA areas (i.e., drainage basins) of the continent, ultimately encouraging adoption as the country's reference screening tool for management and conservation purposes.  相似文献   
4.
Kim K‐S, Kim YM. Asset poverty in Korea: levels and composition based on Wolff's definition The main purpose of the study was to lay the groundwork for establishing a more effective asset‐building policy through accurate measurement and analysis of the level and composition of the asset‐poor Korean population. We defined four asset poverty lines according to the concepts of basic needs, limited period of time and wealth‐type resources from Wolff's operational definition. The size of the Korean asset‐poor population, when considered from the perspectives of net assets and liquid assets, was found to remain around 12.7–13.2 and 32.8–36.5 per cent respectively. This study suggests that it is necessary to establish a differentiated asset‐building policy by age group and to prepare more realistic alternatives to solve housing problems, while empirically verifying the need for an accurate asset poverty line which reflects the definition of asset poverty.  相似文献   
5.
Production teams have become a dominant form of work organization as labor markets have become increasingly diverse. This transition likely affects coworker networks—possibly undermining entrenched patterns of workplace segregation. Contact theory suggests that teams can foster network diversity when workers cooperate and share values emphasizing mutual respect. Yet variants of conflict theory, including the critical teams literature, contend that the benefits of teamwork may be eroded by associated factors, including peer discipline, work intensification, and job insecurity. This study uses 2006 General Social Survey data to assess whether and how teamwork affects the racial diversity of worker acquaintance networks, contrasting worker‐ and manager‐directed teams. We find a positive relationship between teams and diversity, but only when teams are worker directed. Despite countervailing tendencies highlighted in the literature, teams foster greater cooperation between workers, which in turn promotes cross‐racial friendships. African Americans tend to receive the greatest diversity payoffs from teams. These findings suggest that teamwork can undermine segregation, though only with certain implementations and with variation across groups.  相似文献   
6.
This article reflects on the remarkable career of one of the founders and first coeditors of Social Work with Groups. Catherine (Katy) Papell made outstanding contributions to social work—especially to social work with groups for which she was a passionate advocate. In addition to editing this journal, she was a group worker, educator, activist, historian, writer/theorist, mentor, and role model. In the process she became a beloved friend to many and will be greatly missed.  相似文献   
7.
Mediation is a process through which a third party facilitates discussion among disputing parties to help them identify interests and ideally reach an amicable solution. Elder mediation is a growing subspecialty to address conflicts involving older adults, primarily involving caregiving or finances. Mediation is theorized to empower participants but critics argue that it can exacerbate power imbalances among parties and coerce consensus. These contested claims are examined through study of a national caregiver mediation demonstration project. Study implications underscore the importance of gerontological social work expertise to ensure the empowerment of vulnerable older adults in mediation sessions.  相似文献   
8.
1517年发生的伦敦五朔节骚乱属于典型的群体性突发事件。它是在近代早期英国经济快速发展与城市社会关系日趋复杂的背景下发生的。因经济竞争而引发的民族排外情绪是骚乱发生的思想动力;学徒处境地位的恶化则是骚乱发生的主要原因;自负、偏狭的民族心理成为了骚乱的助推力;政府处置措施的不当则诱发了骚乱的发生。多种因素综合作用使得五朔节骚乱得以突然发生。  相似文献   
9.
高职实用性体育是培养高职学生综合素质的重要组成部分,而高职体育教师职后可持续发展现状并不乐观,绝大部分高职体育教师缺乏与外界沟通交流、学习培训的机会,因而很难将职业实用性体育真正落到实处,限制了高职实用性体育在培养学生职业体能中的作用。高职实用性体育想要发展,建立系统的高职体育教师职后可持续发展环境刻不容缓。  相似文献   
10.
This study examined mother–child acculturation gaps in relationship to youth distress and the possible mediating role of parent–child conflict and parenting style in a sample of 81 Chinese American families. Hierarchical multiple regression analyses provided partial support for a relationship between acculturation gaps and youth distress. No mediators of this relationship were found; however, post-hoc analyses indicated that intergenerational conflict and parenting style were associated with youth distress above and beyond acculturation gaps. These results suggest that interventions developed to reduce parent–child conflict and increase parental bonding (increase parental warmth and decrease parental overprotection) may be valuable for Chinese American adolescents, regardless of acculturation gap status.  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