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   34477篇
  免费   942篇
  国内免费   1篇
管理学   4537篇
民族学   160篇
人才学   7篇
人口学   3322篇
丛书文集   178篇
教育普及   3篇
理论方法论   3194篇
现状及发展   2篇
综合类   469篇
社会学   17031篇
统计学   6517篇
  2023年   156篇
  2021年   190篇
  2020年   509篇
  2019年   764篇
  2018年   827篇
  2017年   1137篇
  2016年   846篇
  2015年   651篇
  2014年   823篇
  2013年   5639篇
  2012年   1158篇
  2011年   1089篇
  2010年   826篇
  2009年   751篇
  2008年   860篇
  2007年   894篇
  2006年   835篇
  2005年   791篇
  2004年   762篇
  2003年   696篇
  2002年   739篇
  2001年   891篇
  2000年   833篇
  1999年   767篇
  1998年   589篇
  1997年   544篇
  1996年   553篇
  1995年   527篇
  1994年   502篇
  1993年   497篇
  1992年   578篇
  1991年   560篇
  1990年   495篇
  1989年   506篇
  1988年   491篇
  1987年   440篇
  1986年   426篇
  1985年   477篇
  1984年   474篇
  1983年   447篇
  1982年   367篇
  1981年   314篇
  1980年   312篇
  1979年   337篇
  1978年   296篇
  1977年   276篇
  1976年   243篇
  1975年   258篇
  1974年   200篇
  1973年   178篇
排序方式: 共有10000条查询结果,搜索用时 343 毫秒
991.
992.
Numerous barriers to managing coronary artery disease (CAD) among older women are reported in the literature; however, few studies adjust for demographic and health status differences. A survey assessing barriers and other factors was distributed to a stratified random sampling of older women with CAD. Factor analysis and multiple logistic regression procedures were used to estimate the impact of these issues on receiving a CAD-related office visit. The most problematic barriers included denial and low health literacy. Efforts to promote patient awareness of heart health and better communication between patients and clinicians may alleviate these barriers.  相似文献   
993.
This exploratory qualitative study examined the roles of religiousness in the lives of 21 older women (mean age = 63) serving life sentences in one southern state. Based on survey and focus group methodology, several themes emerged as important focal points, including early religious experiences prior to incarceration, imprisonment and religious doubt, participation in formal and informal religious activities, and use of religion in coping with stressors such as interpersonal relationships, trauma, and health statuses. Irrespective of their religious upbringing, all participants agreed that religiosity/spirituality played a key role in their ability to cope with their prison experience as well as for maintaining hope and the opportunity for release.  相似文献   
994.
995.
This article offers a new definition of military cultural competence based on a review of the literature. As a starting point, the defining characteristics of military culture is discussed and includes the chain of command, military norms, and military identity. Having laid this groundwork, the multidimensionality of military cultural competence—attitudinal, cognitive, behavior—is discussed. Clinical applications of these various competencies are provided.  相似文献   
996.
Parenting is a critical factor in substance abuse prevention. Positive parenting behaviors are identified as a protective factor for substance abuse among youth. Limited research exists that investigates the role of parenting practices on minority youth substance use. The present study seeks to examine correlates between parenting and recent alcohol use among African American youth. Specifically, to what extent do African American students report experiencing specific parenting behaviors that are measured by the National Household Survey on Drug Use and Health?, do specific parenting behaviors increase the risk of recent alcohol use among African American youth?, does the impact of parenting behaviors on recent alcohol use among African American youth differ based on sex (males and females) and age category (12–13, 14–15, and 16–17 years old) were examined in this study? Logistic regression analysis of the National Household Survey on Drug Use and Health was conducted to examine the research questions. Findings indicated that parenting behaviors was associated with recent alcohol among youth. Significant differences were found for males, females, 12–13, 14–15, and 16–17 years olds. Study findings demonstrate the importance of positive parenting behaviors in youth alcohol prevention. Program specialists may target parenting as a means of preventing and reducing youth alcohol use among African American youth.  相似文献   
997.
This article examines how grassroots actors initiate and engage in collective action to transcend dramatic situations of large-scale societal crisis. Merging strands of sociolinguistic scholarship with social movement theory, the concepts of stance and stance-taking are presented to reveal how individuals collectively exert their agency during episodes of macrostructural instability and uncertainty. Stance is defined as the agentive and solidaristic position taken up by a group of actors to navigate and overcome moments of social rupture. Stance-taking is the situational ensemble of discursive, organizational, and dramaturgical practice through which stances are developed and deployed. Analysis of the social construction of stance promotes multidimensional understandings of how social movements intensify and expand under conditions of crisis. To illustrate the analytical purchase of these concepts, the study describes the stance-taking practices that fueled the rise of mass public protests in Buenos Aires, Argentina, at the height of a national crisis in 2001.  相似文献   
998.
This study considers key value differences between leaders of two types of social ventures: for-profit social benefit corporations and nonprofit organizations. The research question asks to what degree the value sets of leaders of benefit corporations are congruent with those of similarly situated individuals in nonprofit organizations. The results show the values of leaders working in benefit corporations and nonprofit organizations are in many ways aligned, but there are notable statistical differences. A sectoral association of values is also present with employees in both types of organization, especially when the previous work experience of employees is considered.  相似文献   
999.
We propose a methodology, called defender–attacker decision tree analysis, to evaluate defensive actions against terrorist attacks in a dynamic and hostile environment. Like most game‐theoretic formulations of this problem, we assume that the defenders act rationally by maximizing their expected utility or minimizing their expected costs. However, we do not assume that attackers maximize their expected utilities. Instead, we encode the defender's limited knowledge about the attacker's motivations and capabilities as a conditional probability distribution over the attacker's decisions. We apply this methodology to the problem of defending against possible terrorist attacks on commercial airplanes, using one of three weapons: infrared‐guided MANPADS (man‐portable air defense systems), laser‐guided MANPADS, or visually targeted RPGs (rocket propelled grenades). We also evaluate three countermeasures against these weapons: DIRCMs (directional infrared countermeasures), perimeter control around the airport, and hardening airplanes. The model includes deterrence effects, the effectiveness of the countermeasures, and the substitution of weapons and targets once a specific countermeasure is selected. It also includes a second stage of defensive decisions after an attack occurs. Key findings are: (1) due to the high cost of the countermeasures, not implementing countermeasures is the preferred defensive alternative for a large range of parameters; (2) if the probability of an attack and the associated consequences are large, a combination of DIRCMs and ground perimeter control are preferred over any single countermeasure.  相似文献   
1000.
In order to provide competent care to aging parents, adult children, and older parents must renegotiate long-standing privacy boundaries that allow caregivers access to parents’ private information. It is reasonable to surmise that caregivers encounter privacy coordination issues when attempting to care for their aging parent. This study utilizes Communication Privacy Management theory to explore what content is considered private and what privacy coordination issues arise in the context of eldercare. Results from 27 in-depth interviews with adult children caring for an aging parent suggest that information concerning parents’ future care, health and well-being, and (in)capabilities were marked private. The findings also detail three disruptions to privacy coordination, including parental caregivers’ ambivalence toward managing parents’ care-related information. Critical implications of the study are discussed, which include how privacy turbulence may be a functional catalyst for boundary recalibration.  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