全文获取类型
收费全文 | 20612篇 |
免费 | 585篇 |
国内免费 | 16篇 |
专业分类
管理学 | 2624篇 |
民族学 | 108篇 |
人才学 | 1篇 |
人口学 | 1795篇 |
丛书文集 | 173篇 |
理论方法论 | 1863篇 |
综合类 | 815篇 |
社会学 | 10357篇 |
统计学 | 3477篇 |
出版年
2023年 | 115篇 |
2021年 | 135篇 |
2020年 | 315篇 |
2019年 | 415篇 |
2018年 | 485篇 |
2017年 | 707篇 |
2016年 | 480篇 |
2015年 | 412篇 |
2014年 | 470篇 |
2013年 | 3484篇 |
2012年 | 699篇 |
2011年 | 660篇 |
2010年 | 567篇 |
2009年 | 482篇 |
2008年 | 601篇 |
2007年 | 619篇 |
2006年 | 594篇 |
2005年 | 508篇 |
2004年 | 424篇 |
2003年 | 368篇 |
2002年 | 409篇 |
2001年 | 500篇 |
2000年 | 426篇 |
1999年 | 414篇 |
1998年 | 319篇 |
1997年 | 287篇 |
1996年 | 272篇 |
1995年 | 272篇 |
1994年 | 237篇 |
1993年 | 281篇 |
1992年 | 313篇 |
1991年 | 301篇 |
1990年 | 302篇 |
1989年 | 261篇 |
1988年 | 267篇 |
1987年 | 294篇 |
1986年 | 238篇 |
1985年 | 232篇 |
1984年 | 282篇 |
1983年 | 237篇 |
1982年 | 232篇 |
1981年 | 180篇 |
1980年 | 192篇 |
1979年 | 224篇 |
1978年 | 163篇 |
1977年 | 156篇 |
1976年 | 158篇 |
1975年 | 184篇 |
1974年 | 148篇 |
1972年 | 116篇 |
排序方式: 共有10000条查询结果,搜索用时 383 毫秒
921.
Aasha B. Foster Melanie E. Brewster Brandon L. Velez Austin Eklund Brian T. Keum 《Journal of homosexuality》2017,64(4):466-487
The present study offers a comparison of the demographic features and lived experiences of lesbian, gay, and bisexual (LGB) individuals with religious, spiritual, or atheist (R/S/A) belief systems. In this sample of 212 participants, the relationship of participants’ R/S/A beliefs to personal variables (e.g., age, gender, race), mental health variables (e.g., life satisfaction, psychological distress, internalized heterosexism, self-esteem), and relational variables (e.g., outness, connection to LGBTQ communities) were assessed. Correlational analyses indicated that level of R/S/A belief was unrelated to self-esteem, life satisfaction, or psychological distress; however, greater religious belief was correlated positively and significantly with internalized heterosexism and outness as LGB. To test the interactions of R/S/A beliefs and categorical variables of interest (e.g., race), log-linear analyses with follow-up chi-square tests were conducted. Findings suggested more similarities than differences for LGB people across R/S/A systems of belief. Limitations and implications for future research are discussed. 相似文献
922.
Holning Lau Geoffrey Yeung Rebecca L. Stotzer Charles Q. Lau Kelley Loper 《Journal of homosexuality》2017,64(4):509-522
Tongzhi is one of several Chinese terms that refer to individuals who are attracted to the same sex. Using data from two different surveys in Hong Kong, this research note examines how the term tongzhi coexists with other terms. We investigate the prevalence of self-identification as tongzhi, and we explore the extent to which using the term tongzhi influences public attitudes toward gay people and gay rights. Activists began popularizing the term tongzhi in the late 1980s, but less than one third of the participants in our 2008 survey of sexual orientation minorities (n = 728) described themselves as tongzhi. Using a split-ballot experiment in a 2013 public opinion poll (n = 831), we found that attitudes toward gay people and gay rights were not significantly impacted by whether questions were phrased in terms of tongzhi or the main alternative term tongxinglianzhe. We discuss how our findings can enrich understandings of earlier research and illuminate avenues for future study. 相似文献
923.
Molly R. Wolf Rebecca K. Eliseo-Arras Megan Brenner Thomas H. Nochajski 《Journal of Family Social Work》2017,20(1):26-40
ABSTRACTMilitary families face not only the same challenges as other families, but also unique issues due to their military involvement. Parenting programs for civilian families can be helpful, but they do not generally cover the specific issues faced by military families. The purpose of this qualitative study was to gather information from a focus group of eight service providers about the types of issues that affect military families, such that content and delivery of workshops at a social service agency could be formed to specifically cater to military families. This study utilized a phenomenological approach, and analyses revealed areas for social service involvement around the cycle of deployment. Specifically, social services could be helpful by using psychoeducational and normalization techniques around the five major themes that resulted from this study: (1) the issues of servicemembers psychologically withdrawing before deployment, (2) family cohesion and connectedness during and after deployment, (3) family stability during reintegration of the service member, (4) military families experience many of the same challenges that nonmilitary families do (such as domestic violence and financial issues), and (5) utilizing a military culture framework for all military family programs. 相似文献
924.
The Impact of Adolescents' Classroom and Neighborhood Ethnic Diversity on Same‐ and Cross‐Ethnic Friendships Within Classrooms
下载免费PDF全文
![点击此处可从《Journal of research on adolescence》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Anke Munniksma Peer Scheepers Tobias H. Stark Jochem Tolsma 《Journal of research on adolescence》2017,27(1):20-33
This study examines how classroom and neighborhood ethnic diversity affect adolescents' tendency to form same‐ versus cross‐ethnic friendships when they enter middle school. Hypotheses are derived from exposure, conflict, and constrict theory. Hypotheses are tested among 911 middle school students (43 classrooms, nine schools) in the Netherlands. Multilevel (p2) social network analyses show that students were more likely to engage in same‐ethnic rather than cross‐ethnic friendships. In line with conflict theory, greater classroom and neighborhood diversity were related to stronger tendencies to choose same‐ethnic rather than cross‐ethnic friends, among both ethnic majority and minority students. Diversity did not hamper reciprocity, as students in more ethnically diverse classrooms were even more likely to reciprocate friendships. 相似文献
925.
Developmental Latent Patterns of Identification as Mostly Heterosexual Versus Lesbian,Gay, or Bisexual
下载免费PDF全文
![点击此处可从《Journal of research on adolescence》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Jerel P. Calzo Katherine E. Masyn S. Bryn Austin Hee‐Jin Jun Heather L. Corliss 《Journal of research on adolescence》2017,27(1):246-253
Scant research exists on the development of mostly heterosexual identity, the largest sexual orientation minority subgroup. We used longitudinal latent class analysis to characterize the patterns of identification with lesbian, gay, bisexual (LGB), or mostly heterosexual identities from ages 12 to 23 in 13,859 youth (57% female) in a U.S. national cohort. Three classes emerged: completely heterosexual (88.2%), mostly heterosexual (9.5%), and LGB (2.4%). LGB class youth generally identified with sexual minority identities by ages 12–17. In contrast, mostly heterosexual class youth identified with sexual minority identities gradually, with steady increases in endorsement starting at the age of 14. Developmental implications of these differential patterns are discussed. 相似文献
926.
Sandeep Mishra Martin L. Lalumière Robert J. Williams 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2017,33(1):15-36
Research suggests that high frequency gambling is a component of the “generality of deviance”, which describes the observation that various forms of risky and antisocial behavior tend to co-occur among individuals. Furthermore, risky and antisocial behaviors have been associated with such personality traits as low self-control, and impulsivity, and sensation-seeking. We conducted a replication (and extension) of two previous studies examining whether high frequency gambling is part of the generality of deviance using a large and diverse community sample (n = 328). This study was conducted as a response to calls for more replication studies in the behavioral and psychological sciences (recent systematic efforts suggest that a significant proportion of psychology studies do not replicate). The results of the present study largely replicate those previously found, and in many cases, we observed stronger associations among measures of gambling, risk-taking, and antisocial behavior in this diverse sample. Together, this study provides evidence for the generality of deviance inclusive of gambling (and, some evidence for the replicability of research relating to gambling and individual differences). 相似文献
927.
Jacqueline Huscroft-D’Angelo Alexandra L. Trout Matthew C Lambert Ronald Thompson 《Journal of Family Social Work》2017,20(5):433-456
ABSTRACTResidential care is one of the most restrictive out-of-home care settings; however, this is a temporary placement and youth eventually reintegrate into the home and community setting. Reintegration presents many challenges, and aftercare becomes critical for maintaining youth gains and promoting family stability. Aftercare programs and supports should align to individual family needs that entail understanding individual and familial characteristics. Previous studies have explored characteristics related to family functioning, mental health, behavior, and perceptions of need during reintegration; yet little is known regarding how affective characteristics (i.e., self-efficacy, empowerment) factor into reintegration, or the implications this may have for providers. The purpose of this study was to address this gap by exploring empowerment and self-efficacy in caregivers (N = 120) who had a child return home within 1 month of departing residential care. Overall, caregivers reported high levels of empowerment and self-efficacy during the initial transition period. Significant differences for empowerment and self-efficacy were present in characteristics such as race, income, number of children in the home, and free/reduced lunch status. 相似文献
928.
A desirable function for terrestrial urban ecosystems is the mitigation of nitrogen (N) pollution associated with cities and suburbs. To assist in maximizing this function, identifying locations of sources and sinks of N in the urban environment is crucial to inform management strategies. Lawns are an extensive land cover in urbanized landscapes, and in general, they have demonstrated the capacity to function as a sink for N inputs. How N is cycled by lawns, however, is likely not uniform across the physical heterogeneity or management activities that exist in lawns. We investigated the influence of heterogeneity in light availability on N cycling in lawns that were irrigated but not fertilized. Light availability is affected by tree canopy and built structures and is, therefore, heterogeneous both within individual lawns and among lawns. Light is expected to control N retention and loss through effects on primary productivity. We experimentally examined N regulation over one calendar year by measuring net primary production (NPP), N retention using an isotopic tracer, and N leaching in existing unfertilized lawns under heterogeneous light conditions. We used a budgetary approach to estimate gaseous N loss which we assume is primarily via denitrification. Light functioned as a limiting resource for primary productivity. From low to high light conditions, annual NPP increased 177 to 430 g C?m?2?y?1 and retention of N isotope tracer increased from 50 to 65% as a result of increased retention in plants. Nitrate leaching losses were low overall and were not affected by light levels. Light availability regulated the fate of N inputs and unfertilized lawns may function as substantial sinks for reactive N through storage in the terrestrial system and N loss by denitrification. However, whether or not denitrification is generally an N sink will depend on the ratio of non-reactive (i.e., N2) to reactive (i.e., N2O, NO) denitrification products. Overall, we find that effective strategies for managing N sources and sinks in cities will likely need to consider light availability, particularly in systems receiving water subsidies via irrigation. 相似文献
929.
Elaine Suk Ching Liu Constance W. L. Ching Joseph Wu 《Journal Of Human Behavior In The Social Environment》2017,27(6):530-545
This study’s purpose was to develop a temporal and cultural definition of volunteering in China. Using a comparative mixed-methods approach, N1 = 218 Chinese students in Hong Kong were surveyed about their perceptions of volunteering. These quantitative data were compared cross-culturally with a sample of adults in the United States who used the same instrument called Who is a Volunteer? Subsequently, N2 = 40 of these same students voluntarily participated in a series of focus groups, to further explore more in-depth their opinions about volunteering. The main quantitative results revealed that at the extreme ends of the volunteer scale, both the U.S. and Chinese samples could readily distinguish what volunteering was or was not. The more nuanced empirical differences on the scale (24% of the 21 items) were explained either by unique cultural differences, or the longer and more prominent history that volunteering has had in North America versus China. Main qualitative findings revealed additional between-group cultural differences exemplified by (1) a more family-centric and collectivist Chinese culture versus a more individualistic American culture, (2) a role blurring about volunteer activities versus paid work activities, and (3) that both organizational and cultural context must be seriously considered when defining volunteerism. This study adds to the growing definitional literature on this transformational concept and represents the largest comparative empirical investigation on this subject from East Asia. 相似文献
930.
This paper aims to contribute to the existing studies on the young women’s transition to adulthood in the case of Turkish women’s exclusion from the labour market. The issue is discussed largely within the boundaries of traditional gender restrictions that keep women out of employment. Herein, we argue that the gender-based control of young women, perceived as the reason for their exclusion from the labour market, may be used by disadvantaged women as a way of avoiding difficult and unfavourable employment situations. Similarly, the gender roles imposed on men could also not be fulfilled due to the same restrictive labour market conditions. Furthermore, we suggest that the poverty simultaneously strengthens and erodes the very base of the traditional gender structure for both young women and young men, while forcing the young women out of employment and the young men to the unstable working conditions. This argument is based on a study conducted in Alt?nda?, Ankara with a sample of 279 females and 340 males aged between 15 and 24. A mixed methodology, comprising a survey questionnaire followed by 60 in-depth interviews and 4 focus group discussions, was employed for this study. 相似文献