全文获取类型
收费全文 | 11989篇 |
免费 | 189篇 |
国内免费 | 1篇 |
专业分类
管理学 | 1474篇 |
民族学 | 54篇 |
人才学 | 3篇 |
人口学 | 1089篇 |
丛书文集 | 57篇 |
理论方法论 | 1026篇 |
综合类 | 103篇 |
社会学 | 5633篇 |
统计学 | 2740篇 |
出版年
2023年 | 58篇 |
2022年 | 65篇 |
2021年 | 64篇 |
2020年 | 174篇 |
2019年 | 218篇 |
2018年 | 324篇 |
2017年 | 433篇 |
2016年 | 278篇 |
2015年 | 235篇 |
2014年 | 287篇 |
2013年 | 2209篇 |
2012年 | 417篇 |
2011年 | 316篇 |
2010年 | 290篇 |
2009年 | 212篇 |
2008年 | 253篇 |
2007年 | 255篇 |
2006年 | 261篇 |
2005年 | 246篇 |
2004年 | 194篇 |
2003年 | 207篇 |
2002年 | 216篇 |
2001年 | 321篇 |
2000年 | 288篇 |
1999年 | 269篇 |
1998年 | 204篇 |
1997年 | 169篇 |
1996年 | 219篇 |
1995年 | 189篇 |
1994年 | 199篇 |
1993年 | 168篇 |
1992年 | 201篇 |
1991年 | 214篇 |
1990年 | 196篇 |
1989年 | 171篇 |
1988年 | 194篇 |
1987年 | 179篇 |
1986年 | 142篇 |
1985年 | 176篇 |
1984年 | 180篇 |
1983年 | 156篇 |
1982年 | 122篇 |
1981年 | 97篇 |
1980年 | 97篇 |
1979年 | 121篇 |
1978年 | 93篇 |
1977年 | 81篇 |
1975年 | 63篇 |
1974年 | 67篇 |
1973年 | 60篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
901.
This study examined how people define having sex utilizing a new approach to this area of research. A total of 267 men and 327 women rated their degree of confidence that engaging in each of 21 physically intimate behaviors (e.g., penile-vaginal intercourse) counted as “having sex” and then qualitatively explained their reasoning. Separate ratings were made for each behavior when engaged in by the respondent and by his or her partner with someone else. Results showed that, as in previous studies, for both sexes, some behaviors (e.g., penile-vaginal intercourse) were far more confidently rated (i.e., “definitely sex”) than were others (e.g., oral-genital stimulation). Further, both men and women were significantly more certain that a behavior counted as “having sex” when considering their partner's behavior outside the relationship than when they considered their own behavior. Finally, the order in which the two scenarios (i.e., self versus partner) was presented significantly affected participants’ certainty. Qualitative results, paired with quantitative findings, suggest that individuals consider a variety of contextual factors when making these definitional decisions. The methodological and sexual health implications of these results are discussed. 相似文献
902.
Creating Tactile Space during a University Extension Field Day Event: The Case of a Sustainable Agriculture Innovation 下载免费PDF全文
Jeremy S. Cowan Jessica R. Goldberger Carol A. Miles Debra A. Inglis 《Rural sociology》2015,80(4):456-482
Drawing on the concept of “tactile space,” we evaluate the experiential learning environment of a university extension field day event focused on a sustainable agriculture innovation: biodegradable plastic mulch. Introduced by sociologist Michael Carolan, “tactile spaces” are sensuously rich learning environments where participants interact with each other and the environment in an “embodied” and “embedded” manner leading to long‐lasting attitudinal and behavioral change. In our study, farmers, extension professionals, crop consultants, and mulch manufacturers participated in a field day event designed to provide both embodied and embedded experiences in an effort to stimulate interest in biodegradable plastic mulch, an economically and environmentally sustainable alternative to polyethylene mulch. Field day participants engaged in hands‐on demonstrations preceded and followed by focus group sessions. Enhancing the learning environment in these ways improved the success of the field day event by encouraging practice‐based forms of learning, which supplemented and reinforced the claims made about biodegradable plastic mulch. However, the tactile space could have been enriched by providing more opportunities for participants to become embedded within the environment, and by adding elements to overcome the temporal limitations of the field day event. This research contributes to the broader literature on participatory research and extension. 相似文献
903.
Derek S. Young Glenn F. Johnson Mosuk Chow James L. Rosenberger 《The American statistician》2015,69(3):213-220
Numerous professional fields have an increasing need for individuals trained in statistics and other quantitative analysis techniques. Today there exists great potential to fulfill this need by providing opportunities through online learning. However, to provide a high-quality education for returning adult professionals seeking advanced degrees in applied statistics online, many challenges need to be overcome. Based on our experience developing Penn State University’s online program in applied statistics, we discuss the evolution of the program’s curriculum, recruitment and development of online faculty, and meeting the requirements of students as important areas that require consideration in the development of an online program. We also highlight program evaluation strategies employed to ensure innovation and improvement in online education as cornerstones to a program’s success. 相似文献
905.
906.
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
907.
Andrea S. Papan 《Gender and development》2015,23(2):299-317
Poverty and income inequality undermine women's health in a myriad of ways. This article discusses findings from the Full Plate Project, which addressed women's experience of food security, obesity, and chronic disease in Atlantic Canada. Through first-hand accounts, it identifies a vicious cycle surrounding the food insecurity–obesity paradox. The cycle's core elements included experiences of poverty, food insecurity and nutritional deprivation, weight gain leading to obesity, stress, and experiences of chronic illness. These mainly qualitative findings provide a vivid and multi-layered analysis of the effects of inequalities on health. A majority of Full Plate participants were lone mothers and unattached women, and existing outside of a two-adult member household framework. The vicious cycles experienced are intertwined and cannot be addressed by compartmentalising elements of health or social services. Evidence indicates that policies must respond fully to the social determinants of health and multiple inequalities related to poverty, gender, age, mobility, disability, location, culture, coping skills, and other dynamics. 相似文献
908.
Joan S. Meier 《Journal of Child Custody》2015,12(1):4-24
Michael Johnson's differentiation of “types” of domestic violence has had a significant impact on courts and providers, in part because of its claim to an empirical basis. Unfortunately, the label “situational couple violence” has already been used by judges and evaluators to minimize abuse claims in custody cases. Johnson's repeated assertion that SCV is the most common form of domestic violence reinforces the marginalizing of domestic violence. But what do his data actually show? Here Professor Meier takes a close look at the research Johnson relies on and finds that it fails to prove his thesis. Rather, the data suggest that Johnson has it exactly backward: Control-based abuse is probably far more common than “situational” domestic violence. 相似文献
909.
910.
Christopher S. Withers 《统计学通讯:模拟与计算》2015,44(7):1801-1817
In regenerative simulation, one frequently requires an estimate or a confidence interval for the ratio of the means of the two components of a certain bivariate random quantity. Estimation of this ratio has been studied by many authors and most recently by Asmussen and Rydén(2010). Here, we propose an estimate that performs better than the best of the known estimates. Our estimate is also lot simpler than the best known estimate. 相似文献