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   1281篇
  免费   50篇
管理学   138篇
民族学   8篇
人口学   118篇
丛书文集   11篇
理论方法论   142篇
综合类   7篇
社会学   783篇
统计学   124篇
  2023年   13篇
  2022年   9篇
  2021年   13篇
  2020年   27篇
  2019年   21篇
  2018年   37篇
  2017年   66篇
  2016年   50篇
  2015年   24篇
  2014年   40篇
  2013年   199篇
  2012年   56篇
  2011年   59篇
  2010年   44篇
  2009年   40篇
  2008年   54篇
  2007年   49篇
  2006年   58篇
  2005年   43篇
  2004年   49篇
  2003年   41篇
  2002年   38篇
  2001年   22篇
  2000年   19篇
  1999年   22篇
  1998年   17篇
  1997年   19篇
  1996年   17篇
  1995年   14篇
  1994年   11篇
  1993年   10篇
  1992年   11篇
  1991年   14篇
  1990年   5篇
  1989年   12篇
  1988年   9篇
  1987年   12篇
  1986年   7篇
  1985年   7篇
  1984年   9篇
  1983年   10篇
  1982年   9篇
  1980年   6篇
  1979年   6篇
  1977年   4篇
  1976年   3篇
  1975年   3篇
  1974年   5篇
  1970年   3篇
  1969年   3篇
排序方式: 共有1331条查询结果,搜索用时 15 毫秒
21.
Reviews     
Abstract

Elizabeth Parang reviews Reengineering the Library: Issues in Electronic Resources Management. Scott Johnson reviews Academic Library Management: Case Studies.  相似文献   
22.
Abstract

In this installment of “Conversations,” Dominic Boyer, Cymene Howe, and Marcel LaFlamme, of the Cultural Anthropology editorial team, discuss the ins and outs of publishing a gold open access journal in the field of anthropology. Highlights of the discussion include Cultural Anthropology’s move to open access, the ethics of open access, the growth of international readership, ongoing publishing challenges in open access, and the role libraries can play with open access publishing.  相似文献   
23.
This article describes estimation and inference procedures for the parameters of the Box-Cox and foided-power transformations in repeated measures and growth curve models. Procedures for computing maximum likelihood estimates of the transformation and covariance parameters under several covanance structures (omnibus sphericity, local sphericity, and unstructured) are described. Lack of fit statistics and hypothesis tests for comparing these structures also are described. The procedures are illustrated on three data sets. Software for performing the analyses in the SAS System is described and is available from the authors.  相似文献   
24.
Attempts to grapple with the complicated tangle of race and memory are more prominent than ever in the public discourse of the United States. In 2006, public intellectual Henry Louis Gates sought to popularize the search for roots and meaning with his project African American Lives, and in 2007 the black and white descendants of the landmark Plessy v. Ferguson case met in New Orleans to discuss the past and present significance of their ancestors’ lives. As the crafting of identities around increasingly fluid notions of ‘race’ proceeds apace, the activities of family historians provide a useful entrée into struggles over race, identity, and collective memory in the United States. The research reported here illustrates how the shared history of the multi-racial descendants of eighteenth and nineteenth century St Domingue/Haiti in Louisiana is encountered in racially distinct ways. Participant observation is used to examine how race is dealt with in the activities of two groups: 1) a mainly European American genealogical society, called the St Domingue Special Interest Group; and 2) the LA Creole cultural and genealogy group, made up primarily of Louisiana creoles of color. Preliminary findings indicate that while the process of engaging in family history research provides an opening for some participants to better understand others across racial and ethnic divides, this kind of cross-racial dialogue was limited by the organization of family history activities into racially distinct social networks. As the popularity of genealogy increases, the findings here point to the need to recognize the public significance of these private histories.  相似文献   
25.
Breslow and Holubkov (J Roy Stat Soc B 59:447–461 1997a) developed semiparametric maximum likelihood estimation for two-phase studies with a case–control first phase under a logistic regression model and noted that, apart for the overall intercept term, it was the same as the semiparametric estimator for two-phase studies with a prospective first phase developed in Scott and Wild (Biometrica 84:57–71 1997). In this paper we extend the Breslow–Holubkov result to general binary regression models and show that it has a very simple relationship with its prospective first-phase counterpart. We also explore why the design of the first phase only affects the intercept of a logistic model, simplify the calculation of standard errors, establish the semiparametric efficiency of the Breslow–Holubkov estimator and derive its asymptotic distribution in the general case.  相似文献   
26.
27.
Large firms face a conflict in managing a portfolio of high-risk projects. When an ongoing project is thought to have a low likelihood of success, project team members take risks to improve its chances of success. However, upper-level managers who allocate resources tend to withhold resources from a project with a low likelihood of success in favor of others in the portfolio that look more promising. Because this paucity of resources influences project team members to avoid risk, the total effect of success likelihood on risk taking is conflicted. The influence on risk taking of a project's terminal value—defined as the value that remains in the firm in the event of project failure—is unequivocally positive, because both senior management resource allocation and project team risk-taking propensity are encouraged by terminal value. Thus, firms can override the ambivalent effect of likelihood of success on project decision making by focusing attention on a project's terminal value.  相似文献   
28.
29.
This study examined whether the efficacy of keepin' it REAL, a model program for substance use prevention in schools, was moderated by gender, ethnicity, and acculturation. Gender differences in program efficacy may arise through boys' higher risk of drug use, inadequate attention to girls' developmental issues, or cultural factors like polarized gender expectations. Data came from a randomized trial in 35 Phoenix, Arizona, middle schools involving 4,622 mostly Latino 7th graders. Using multi-level mixed models and multiple imputation missing techniques, results for the total sample showed no gender differences in program effects on recent substance use, but the program was more effective in fostering boys' than girls' anti-drug norms. Subgroup analyses demonstrated several more beneficial program effects for boys than girls (less alcohol and cigarette use and stronger anti-drug norms), but only among less acculturated Latinos. There were no gender differences in program effects among more acculturated Latinos, nor among non-Latino whites.  相似文献   
30.
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