全文获取类型
收费全文 | 11734篇 |
免费 | 195篇 |
专业分类
管理学 | 1468篇 |
民族学 | 49篇 |
人口学 | 964篇 |
丛书文集 | 62篇 |
教育普及 | 3篇 |
理论方法论 | 1017篇 |
综合类 | 116篇 |
社会学 | 6188篇 |
统计学 | 2062篇 |
出版年
2023年 | 61篇 |
2021年 | 70篇 |
2020年 | 147篇 |
2019年 | 223篇 |
2018年 | 248篇 |
2017年 | 345篇 |
2016年 | 247篇 |
2015年 | 190篇 |
2014年 | 262篇 |
2013年 | 2373篇 |
2012年 | 316篇 |
2011年 | 315篇 |
2010年 | 228篇 |
2009年 | 207篇 |
2008年 | 231篇 |
2007年 | 235篇 |
2006年 | 258篇 |
2005年 | 226篇 |
2004年 | 190篇 |
2003年 | 168篇 |
2002年 | 189篇 |
2001年 | 273篇 |
2000年 | 261篇 |
1999年 | 275篇 |
1998年 | 173篇 |
1997年 | 154篇 |
1996年 | 212篇 |
1995年 | 210篇 |
1994年 | 218篇 |
1993年 | 222篇 |
1992年 | 235篇 |
1991年 | 218篇 |
1990年 | 242篇 |
1989年 | 211篇 |
1988年 | 199篇 |
1987年 | 177篇 |
1986年 | 167篇 |
1985年 | 172篇 |
1984年 | 177篇 |
1983年 | 125篇 |
1982年 | 124篇 |
1981年 | 103篇 |
1980年 | 115篇 |
1979年 | 114篇 |
1978年 | 96篇 |
1977年 | 84篇 |
1976年 | 84篇 |
1975年 | 85篇 |
1974年 | 57篇 |
1973年 | 54篇 |
排序方式: 共有10000条查询结果,搜索用时 10 毫秒
991.
992.
993.
Familism Values,Perspective Taking,and Prosocial Moral Reasoning: Predicting Prosocial Tendencies Among Mexican American Adolescents 下载免费PDF全文
George P. Knight Gustavo Carlo Camille D. Basilio Ryan P. Jacobson 《Journal of research on adolescence》2015,25(4):717-727
Mexican American youth often engage in relatively high levels of prosocial behaviors. We theorize that this may be due to a cultural value system that encourages familism values, which, in turn, may foster the development of sociocognitive processes that promote prosocial behaviors. Two hundred and five Mexican American early adolescent youth (Mage = 10.9 years, SD = 0.84; 51% girls) reported their familism values, perspective taking, prosocial moral reasoning, and six types of prosocial behaviors. The results indicated that perspective taking partially mediated the relation between familism values and the specific prosocial tendencies theoretically linked to the Mexican American culture. The study demonstrated the utility of integrating cultural and traditional developmental mechanisms in attempting to explain prosocial behaviors. 相似文献
994.
995.
Heidi A. Lyons Wendy D. Manning Monica A. Longmore Peggy C. Giordano 《Journal of sex research》2015,52(5):543-557
The prevalence of casual sexual activity among teens and emerging adults has led to much public attention. Yet limited research has investigated whether the number of casual sexual partners per year changes as heterosexual men and women transition from adolescence into emerging adulthood. We considered the influence of social context and life course factors on the number of casual sex partners. We examined four waves of interviews from the Toledo Adolescent Relationships Study (TARS) and used negative binomial growth curve models to investigate patterns of change in the number of casual sex partners (N = 1,196) ages 15 to 22. Men and women both reported increases in the number of casual sex partners over time and did not differ from each other in the rate of change over time. In all, 40% of respondents reported a recent casual sex partner at age 22. Number of prior dating relationships, education status, substance use, and perceptions of peer sexual behavior significantly influenced the number of casual sex partners. Emerging adults who did not complete high school, compared to those enrolled in four-year degree programs, reported significantly more partners. The findings contribute to research on intimate relationships and provide insights for programs targeting emerging adults. 相似文献
996.
He Said What? Guided Cognitive Reframing About the Co‐Resident Father/Stepfather–Adolescent Relationship 下载免费PDF全文
Jeffrey T. Cookston Andres Olide Ross D. Parke William V. Fabricius Delia S. Saenz Sanford L. Braver 《Journal of research on adolescence》2015,25(2):263-278
We studied young adolescents' seeking out support to understand conflict with their co‐resident fathers/stepfathers, and the cognitive and affective implications of such support‐seeking, phenomena we call guided cognitive reframing. Our sample included 392 adolescents (Mage = 12.5, 52.3% female) who were either of Mexican or European ancestry and lived with their biological mothers and either a stepfather or a biological father. More frequent reframing was associated with more adaptive cognitive explanations for father/stepfather behavior. Cognitions explained the link between seeking out and feelings about the father/stepfather and self. Feelings about the self were more strongly linked to depressive symptoms than cognitions. We discuss the implications for future research on social support, coping, guided cognitive reframing, and father–child relationships. 相似文献
997.
998.
Pablo Martínez-Camblor Jacobo de Uña-Álvarez Carmen Díaz Corte 《Journal of applied statistics》2015,42(12):2539-2553
Multi-state models (MSMs) are useful to analyze survival data when, besides the event of main interest, one or more intermediate states of the individual are identified. These models take the several existing states and the possible transitions among them into account. At the same time, covariate effects on each transition intensity may be investigated separately and, therefore, MSMs are more flexible than the standard Cox proportional hazards model. In this work, we use MSMs to investigate the impact of the quality of a transplanted kidney for a group of patients at the Hospital Universitario Central de Asturias. Specifically, we use an illness-death model to study the evolution of patients with kidney disease who received a renal transplant after a dialysis period. The intermediate state is defined as the failure of the received organ, while the terminating state is the death of the patient. In order to increase the potential number of organs available for transplant, the standards of quality for the transplanted kidneys were relaxed (the new criteria are labeled expanded criteria), and these ‘expanded kidneys’ were transplanted in appropriate candidates (older patients, with higher prevalence of diabetes mellitus). Results suggest that the expanded kidneys have a minor effect on survival, while both the kidney mortality and the risk of death increase with the patient's age and the serum creatinine and serum hemoglobin levels. 相似文献
999.
The relationship between class and voting choices has been the subject of controversy in recent years, especially in connection with the apparent decline of the traditional left. This paper examines class voting in Australia, focusing on three major issues: (1) changes in the overall strength of class voting (2) realignment, or changes in the relative political positions of the classes (3) the connection between the strength of class voting and support for Labor. It finds that (1) there is a decline in 'general' class voting (2) much of this decline involves a realignment of certain middle class groups, but there is no support for the popular idea that class alignments have become more complex (3) there is no connection between the strength of class voting and Labor performance. Our results cast doubt on accounts that regard the electoral difficulties of left parties as a symptom of the decline of class. 相似文献
1000.
Mueller J. Tom Brooks Matthew M. Pacas José D. 《Population research and policy review》2022,41(4):1501-1523
Population Research and Policy Review - Poverty scholarship in the United States is increasingly reliant upon the Supplemental Poverty Measure (SPM) as opposed to the Official Poverty Measure of... 相似文献