全文获取类型
收费全文 | 7761篇 |
免费 | 188篇 |
国内免费 | 1篇 |
专业分类
管理学 | 1081篇 |
民族学 | 44篇 |
人口学 | 679篇 |
丛书文集 | 23篇 |
理论方法论 | 654篇 |
综合类 | 71篇 |
社会学 | 3383篇 |
统计学 | 2015篇 |
出版年
2023年 | 45篇 |
2021年 | 50篇 |
2020年 | 112篇 |
2019年 | 178篇 |
2018年 | 199篇 |
2017年 | 290篇 |
2016年 | 198篇 |
2015年 | 134篇 |
2014年 | 214篇 |
2013年 | 1471篇 |
2012年 | 234篇 |
2011年 | 251篇 |
2010年 | 180篇 |
2009年 | 188篇 |
2008年 | 202篇 |
2007年 | 184篇 |
2006年 | 201篇 |
2005年 | 189篇 |
2004年 | 156篇 |
2003年 | 146篇 |
2002年 | 170篇 |
2001年 | 200篇 |
2000年 | 206篇 |
1999年 | 187篇 |
1998年 | 139篇 |
1997年 | 127篇 |
1996年 | 107篇 |
1995年 | 93篇 |
1994年 | 139篇 |
1993年 | 100篇 |
1992年 | 125篇 |
1991年 | 130篇 |
1990年 | 115篇 |
1989年 | 105篇 |
1988年 | 88篇 |
1987年 | 90篇 |
1986年 | 91篇 |
1985年 | 89篇 |
1984年 | 91篇 |
1983年 | 69篇 |
1982年 | 70篇 |
1981年 | 49篇 |
1980年 | 59篇 |
1979年 | 62篇 |
1978年 | 49篇 |
1977年 | 48篇 |
1976年 | 38篇 |
1975年 | 47篇 |
1974年 | 40篇 |
1971年 | 25篇 |
排序方式: 共有7950条查询结果,搜索用时 187 毫秒
171.
We investigate the convergence rates of uniform bias-corrected confidence intervals for a smooth curve using local polynomial regression for both the interior and boundary region. We discuss the cases when the degree of the polynomial is odd and even. The uniform confidence intervals are based on the volume-of-tube formula modified for biased estimators. We empirically show that the proposed uniform confidence intervals attain, at least approximately, nominal coverage. Finally, we investigate the performance of the volume-of-tube based confidence intervals for independent non-Gaussian errors. 相似文献
172.
173.
Parody news programs regale viewers with satirical, witty, and humorous exposés of the political world and news coverage, but they have also been criticized for creating cynicism and political disengagement. This study found that parody news viewers are self-efficacious and more politically active than viewers of CNN, Fox News, MSNBC, or broadcast television news. Moreover, reliance on parody news shows does not lead to political polarization or government distrust. 相似文献
174.
Love and sex are fundamental needs of most people, yet little research has examined such aspects of life in relation to personality pathologies. We examined the associations between pathological personality traits (i.e., negative affectivity, disinhibition, antagonism, psychoticism, and detachment) and sociosexuality (i.e., short-term mating orientation, long-term mating orientation, and sexual behavior) among 702 university students. In addition, we examined the mediating role of life history speed and tested whether sex moderated the associations that these pathological personality traits had with sociosexuality. Detachment, antagonism, disinhibition, and psychoticism had positive associations with short-term mating interests and negative associations with long-term mating interests. Life history speed mediated the associations that detachment and disinhibition had with short-term mating orientation and long-term mating orientation. Although sex did moderate the association that negative affectivity had with previous sexual behavior, we found no evidence that these mediational processes differed between men and women. Results are discussed in terms of the way personality traits shape the sociosexuality of men and women using a life history paradigm. 相似文献
175.
Stephanie K. Decker 《Journal of historical sociology》2019,32(4):459-477
Authority figures may organize show trials featuring public confessions when they are faced with deep rooted contradictions within the social order and want to increase their legitimacy, delegitimize defendants, and justify increased social control in society. An analysis of the court report of the Moscow Show Trials found that these public confessions frame conflicts rooted in contradictions within the social order as acts of deviance that can be resolved with additional social control. The public confessions accomplished this using four main themes: establishing credibility, labeling the defendants as deviant, endorsing the power holder, and demonstrating closure. 相似文献
176.
Sarah M. Garrity Sascha L. Longstreth Lisa K. Linder Nina Salcedo Potter 《Children & Society》2019,33(2):168-184
Given their key role in overall programme quality, it is critical to examine how early childhood programme centre directors in the United States perceive challenging behaviour. Participants completed a survey asking which behaviours they perceive to be most problematic, the number of children dismissed or expelled from the programme during the last year, and the most commonly used strategies for addressing challenging behaviours. Results point to several promising practices and highlight the variability in access to evidence‐based practices based on programme type. Areas that warrant more targeted professional development are discussed, and findings are situated within the larger early childhood context. 相似文献
177.
Erks Rebekka L. Allen Joseph A. Harland Lynn K. Prange Kelly 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2021,32(6):1285-1298
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - Many non-profit organizations rely on volunteers to further their mission, but volunteer rates linger at only 25% of the... 相似文献
178.
Conceio Katiane S. Suzuki Adriano K. Andrade Marinho G. 《Statistical Methods and Applications》2021,30(2):747-765
Statistical Methods & Applications - In this paper is presented the zero-modified poisson difference and present possible applications of them in the analysis of paired count data. The... 相似文献
179.
Introduction to the Special Section Value Development from Middle Childhood to Early Adulthood—New Insights from Longitudinal and Genetically Informed Research 下载免费PDF全文
Research into values at an early age has only started recently, although it has expanded quickly and dynamically in the past years. The purpose of this article is twofold: First, it provides an introduction to a special section that aims to help fill the gap in value development research. The special section brings together four new longitudinal and genetically informed studies of value development from the beginning of middle childhood through early adulthood. Second, this article reviews recent research from this special section and beyond, aiming to provide new directions to the field. With new methods for assessing children's values and an increased awareness of the role of values in children's and adolescents' development, the field now seems ripe for an in‐depth investigation. Our review of empirical evidence shows that, as is the case with adults, children's values are organized based on compatibilities and conflicts in their underlying motivations. Values show some consistency across situations, as well as stability across time. This longitudinal stability tends to increase with age, although mean changes are also observed. These patterns of change seem to be compatible with Schwartz's (1992) theory of values (e.g., if the importance of openness to change values increases, the importance of conservation values decreases). The contributions of culture, family, peers, significant life events, and individual characteristics to values are discussed, as well as the development of values as guides for behavior. 相似文献
180.
In modeling disease transmission, contacts are assumed to have different infection rates. A proper simulation must model the heterogeneity in the transmission rates. In this article, we present a computationally efficient algorithm that can be applied to a population with heterogeneous transmission rates. We conducted a simulation study to show that the algorithm is more efficient than other algorithms for sampling the disease transmission in a subset of the heterogeneous population. We use a valid stochastic model of pandemic influenza to illustrate the algorithm and to estimate the overall infection attack rates of influenza A (H1N1) in a Canadian city. 相似文献