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   13115篇
  免费   354篇
  国内免费   2篇
管理学   1928篇
民族学   53篇
人口学   1217篇
丛书文集   42篇
教育普及   1篇
理论方法论   1218篇
综合类   157篇
社会学   6499篇
统计学   2356篇
  2023年   65篇
  2021年   76篇
  2020年   189篇
  2019年   247篇
  2018年   274篇
  2017年   395篇
  2016年   306篇
  2015年   203篇
  2014年   297篇
  2013年   2169篇
  2012年   339篇
  2011年   348篇
  2010年   289篇
  2009年   269篇
  2008年   341篇
  2007年   307篇
  2006年   346篇
  2005年   297篇
  2004年   273篇
  2003年   216篇
  2002年   254篇
  2001年   290篇
  2000年   296篇
  1999年   281篇
  1998年   244篇
  1997年   207篇
  1996年   221篇
  1995年   199篇
  1994年   204篇
  1993年   222篇
  1992年   233篇
  1991年   246篇
  1990年   247篇
  1989年   223篇
  1988年   218篇
  1987年   204篇
  1986年   194篇
  1985年   213篇
  1984年   208篇
  1983年   201篇
  1982年   138篇
  1981年   120篇
  1980年   126篇
  1979年   157篇
  1978年   125篇
  1977年   104篇
  1976年   121篇
  1975年   86篇
  1974年   116篇
  1973年   81篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
921.
922.
We analyze single binary-choice voting rules and identify the presence of the No-Show paradox in this simple setting, as a consequence of specific turnout or quorum conditions that are included in actual rules. Since these conditions are meant to ensure a representative outcome, we formalize this concern and reach our main result: no voting rule can ensure representation if abstention is possible, unless restrictive assumptions are made on the preference domain of abstainers. We then focus on the main referendum systems and show that appropriate restrictions do make them compatible with representation. The main purpose of our paper is, however, to provide a tool for referendum design: rather than imposing arbitrary restrictions on the preference domain of non-voters, we recommend instead that a conscious choice be made on how abstention is to be interpreted and that this choice be used to derive the corresponding referendum rule.The idea for this paper started with some jocose but insightful notes written by José João Marques da Silva at the time of the first referendum held in Portugal (1998). When José João passed away in August 2000, ISEG lost a bright, interested and friendly scholar. May we dedicate this paper to his memory. This paper was presented at the 2002 Annual Meeting of the Public Choice Society and Economic Science Association, San Diego, CA and a preliminary version was presented at the 2001 Annual Meeting of the European Public Choice Society, Paris. We would like to thank Mathew Braham, Moshé Machover, Eric Maskin, Vincent Merlin, Hannu Nurmi, Katri Sieberg, Frank Steffen, and two anonymous referees for helpful comments. The usual proviso applies.  相似文献   
923.
Psychiatric medication use for children has increased dramatically over the past three decades. Despite substantial media attention to the issue, little is known about how the lay public feels about the use of psychiatric medications for children. Drawing on theories of medicalization, we describe and analyze Americans' attitudes towards the use of psychiatric medications generally and Prozac specifically for children described as having three types of behavioral problems. Using data from the 1998 General Social Survey's Pressing Issues in Health and Medical Care Module, we find that more Americans (57%) are willing to use psychiatric medications for children who have expressed suicidal statements than for "oppositional" behaviors (34.2%) or for hyperactivity (29.5%). Across the board, respondents are less willing to give Prozac than the general class of psychiatric medications. While socio-demographics do little to identify Americans with differing positions, the strongest and most consistent correlates of willingness to give psychiatric medications to children are trust in personal physicians, general attitudes towards psychiatric medications, and the respondent's expressed willingness to take psychiatric medications herself or himself.  相似文献   
924.
In the last 15 years, a substantial number of studies have tested the theoretical validity of Bowen family systems theory. A review of this basic research provided empirical support for the relationship between differentiation and chronic anxiety, marital satisfaction, and psychological distress. Bowen's assumption that couples with the same level of differentiation marry was not supported. His specific theories of sibling position and triangulation also received little empirical support. Research on multigenerational transmission has generally ignored Bowen's theoretical perspective, and more research needs to test Bowen's claim that his theory is universal. In addition, researchers still need to examine the effect of differentiation on child functioning, physical health problems, and adaptability.  相似文献   
925.
This research is based on in-depth ethnographic interviews and focus groups with 88 African American family caregivers from various regions of the United States during a stressful time in their family development--caregiving at the end-of-life--and the grieving during the aftermath. The study employed a stratified purposeful sampling strategy. Subjects were African Americans from the Northern, Southern, and Midwestern United States. Formal care is complicated by the distrust that many African Americans hold toward the health care system, which has resulted from years of exclusion, racism and discrimination. The findings highlight the importance of hearing from African American families to gain an understanding of what services, including family therapy and other psychotherapy, they will need during this process.  相似文献   
926.
Obsessive-compulsive disorder (OCD) is a chronic, impairing condition with an estimated lifetime prevalence in adults of 2.5%. Controlled treatment trials have demonstrated that cognitive-behavioral therapy (CBT) is an effective intervention for OCD. However, many individuals diagnosed with OCD do not receive appropriate, empirically validated interventions, perhaps due to limited knowledge of CBT among mental health practitioners. This article provides a review of CBT for OCD. Issues related to treatment delivery and assessment are presented and highlighted by an individual example.  相似文献   
927.
All family members interviewed suffered from chronic posttraumatic stress disorder 5 or more years after an infant kidnapping. Psychiatric nurses should routinely assess for secondary victimization related to any type of traumatic stressor. Nurses should refer parents and families to materials available from the National Center for Missing and Exploited Children (NCMEC) (http://www.missingkids.com/).  相似文献   
928.
929.
We report the development and initial validation of the Sexual Coercion in Intimate Relationships Scale (SCIRS), a measure designed to assess the prevalence and severity of sexual coercion in committed intimate relationships. We review existing measures of sexual coercion and discuss their limitations, describe the identification of the SCIRS items, perform a principal components analysis and describe the resulting three components, and present evidence for the convergent and discriminative validity of the SCIRS. Because sexual coercion in intimate relationships often takes the form of subtle tactics, the SCIRS items assess communicative tactics such as hinting and subtle manipulations in addition to tactics such as the use of physical force. The SCIRS provides researchers and clinicians with a valid, reliable, and comprehensive measure with which to study the dynamics of sexual coercion in intimate relationships.  相似文献   
930.
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