全文获取类型
收费全文 | 19838篇 |
免费 | 221篇 |
国内免费 | 3篇 |
专业分类
管理学 | 2980篇 |
民族学 | 178篇 |
人才学 | 10篇 |
人口学 | 3110篇 |
丛书文集 | 78篇 |
理论方法论 | 1567篇 |
综合类 | 354篇 |
社会学 | 9329篇 |
统计学 | 2456篇 |
出版年
2023年 | 54篇 |
2021年 | 66篇 |
2020年 | 163篇 |
2019年 | 238篇 |
2018年 | 1865篇 |
2017年 | 1888篇 |
2016年 | 1315篇 |
2015年 | 254篇 |
2014年 | 274篇 |
2013年 | 1707篇 |
2012年 | 618篇 |
2011年 | 1443篇 |
2010年 | 1275篇 |
2009年 | 962篇 |
2008年 | 1084篇 |
2007年 | 1269篇 |
2006年 | 278篇 |
2005年 | 528篇 |
2004年 | 517篇 |
2003年 | 449篇 |
2002年 | 360篇 |
2001年 | 201篇 |
2000年 | 234篇 |
1999年 | 187篇 |
1998年 | 164篇 |
1997年 | 161篇 |
1996年 | 164篇 |
1995年 | 138篇 |
1994年 | 156篇 |
1993年 | 139篇 |
1992年 | 141篇 |
1991年 | 112篇 |
1990年 | 94篇 |
1989年 | 96篇 |
1988年 | 132篇 |
1987年 | 104篇 |
1986年 | 71篇 |
1985年 | 93篇 |
1984年 | 111篇 |
1983年 | 110篇 |
1982年 | 90篇 |
1981年 | 84篇 |
1980年 | 79篇 |
1979年 | 78篇 |
1978年 | 71篇 |
1977年 | 62篇 |
1976年 | 81篇 |
1975年 | 55篇 |
1974年 | 53篇 |
1973年 | 37篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
971.
To explore questions in history and to construct historical narratives, historians work with evidence from the past. This approach to teaching history (inquiry involving the use of evidence) is an accepted part of the research on history teaching and is promoted widely in standards frameworks and practitioner publications as “good history instruction.” What happens in a standards-based setting where teachers are covering large bodies of content? Do teachers use sources as part of their daily instruction? If so, how? We were afforded the unique opportunity to spend time observing what 35 teachers do by analyzing 352 videos submitted over a 4-year time span. We observed a spectrum of source use within and across teacher practice. In this article we share what we noticed. 相似文献
972.
The Role of Household Social Organization in the Structure of Rural Economies: Comparing Forest Resource Dependent and Agriculturally Dependent Regions in Russia 下载免费PDF全文
Sociologists have examined how structural economic change affects household social organization and generation of household income from different sources. The introduction of elements of a market economy into rural Russia in the early 1990s provides a unique opportunity to examine these relationships. Much of the work on this topic, however, has been conducted in black earth zone, agriculturally dependent regions. Less attention has been given to non‐black‐earth zone, forest resource dependent regions. This article addresses this limitation by comparing the relationships between household income generation strategies and household social organization in a 2009 survey of villages in three forest resource dependent regions in northwest Russia with findings from a 2006 survey of households in nine agricultural regions of Russia. Income generated from enterprises based on household social organization—household labor and social helping networks—is substantially greater in agriculturally dependent than in forest resource dependent regions. We discuss the implications of these findings for understanding intranational regional differences in the relationship between economic systems, household social organization, and rural household economies as well as the obstacles facing policymakers and environmentalists who attempt to shift household income generation strategies away from an environmentally harmful lumber industry to income generation activities that are less harmful to the environment. 相似文献
973.
Gregory B. UptonJr. 《Journal of Labor Research》2016,37(2):235-261
This paper analyzes the effect of a statewide merit-based scholarship program on educational outcomes in Arizona. It tests whether Arizona’s Instrument to Measure Standards (AIMS) scholarship has an effect on a comprehensive set of educational outcomes such as the number of applicants, student admissions, first-year first-time enrollment, ACT scores of entering freshman, retention rates, as well as on the level of tuition and fees at the three schools targeted by the program; Arizona State University, University of Arizona and Northern Arizona University. Both difference-in-differences estimation as well as synthetic control methods shows that AIMS has an economically and statistically significant effect enrollment. Enrollment effects are greatest among African American and Hispanic students and are significant for both men and women. While point estimates suggest that AIMS also lead to increases in tuition and fees, these results are not robust to placebo tests. 相似文献
974.
Jaime Lara 《Journal of Labor Research》2016,37(3):368-387
The probability that Mexican households receive remittances increases in response to temporary loss of employment by household heads. Evidence indicates that the probability doubles in the short-term, with a stronger effect in the first quarter of unemployment. Taking into account inter-household transfers within Mexico, the increase in the probability of private transfers is similar in households with low and high access to migratory networks in the U. S. The effectiveness of private transfers as an insurance mechanism has been reduced in an environment of economic crisis. 相似文献
975.
Motivating Action and Maintaining Change: The Time‐Varying Role of Homework Following a Brief Couples' Intervention 下载免费PDF全文
Matt Hawrilenko C. J. Eubanks Fleming Alana S. Goldstein James V. Cordova 《Journal of marital and family therapy》2016,42(3):396-408
Studies regarding the effectiveness of homework assignments in cognitive‐behavioral treatments have demonstrated mixed results. This study investigated predictors of compliance with homework recommendations and the time‐varying relationship of recommendation completion with treatment response in a brief couples' intervention (N = 108). More satisfied couples and couples with more motivation to change completed more recommendations, whereas couples with children completed fewer. The association between recommendation completion and treatment response varied with the passage of time, with the strongest effect observed 6 months after the intervention, but no discernible differences at 1 year postintervention. Couples that completed more recommendations experienced more rapid treatment gains, but even those couples doing substantially fewer recommendations ultimately realized equivalent treatment effects, although they progressed more slowly. Implications are discussed. 相似文献
976.
This study examined gender, age, and task differences in positive touch and physical proximity during mother–child and father–child conversations. Sixty-five Spanish mothers and fathers and their 4- (M = 53.50 months, SD = 3.54) and 6-year-old (M = 77.07 months, SD = 3.94) children participated in this study. Positive touch was examined during a play-related storytelling task and a reminiscence task (conversation about past emotions). Fathers touched their children positively more frequently during the play-related storytelling task than did mothers. Both mothers and fathers were in closer proximity to their 6-year-olds than their 4-year-olds. Mothers and fathers touched their children positively more frequently when reminiscing than when playing. Finally, 6-year-olds remained closer to their parents than did 4-year-olds. Implications of these findings for future research on children’s socioemotional development are discussed. 相似文献
977.
Alexander R. Daros Anthony C. Ruocco Nicholas O. Rule 《Journal of Nonverbal Behavior》2016,40(4):255-281
Although appearance-based cues can help to diagnose physical illness, visual manifestations of mental disorder may be more elusive. Here, we investigated whether individuals could distinguish women with a serious mental disorder (borderline personality disorder) from demographically- and IQ-matched non-psychiatric controls. Participants rated mentally ill targets as more likely to have a mental disorder from photos more accurately than chance, despite not believing that such judgments were possible. The configuration of facial cues played an important role in these judgments, as interfering with the spatial relationships between facial features reduced participants’ accuracy to chance guessing. Further investigation showed similar results when participants rated the targets for specific mental disorders (borderline personality disorder, major depressive disorder) and rated the mentally ill targets as more depressed, angry, anxious, disgusted, emotionally unstable, distressed, and less happy. Moreover, the depression ratings significantly correlated with the targets’ actual depressive symptoms. Thus, individuals may be able to infer aspects of mental disorder from minimal facial cues. 相似文献
978.
David Hayes Janet Carter Anand Gavin Davidson Agnieszka Buczak Chaitali Das Peter Hansbauer 《Social Work Education》2016,35(2):144-157
Comparisons of international child welfare systems have identified two basic orientations to practice; a ‘child protection’ orientation and a ‘child welfare’ orientation, which are founded upon fundamentally different values and assumptions regarding the family, the origins of childcare problems, and the proper role of the state in relation to the family. This paper describes a project which sought to compare how undergraduate social work students from three European Universities perceive risk in referrals about the welfare of children and to explore the impact of different cultural, ideological and educational contexts on the way in which risk is constructed by students. Students from Northern Ireland, Germany and Poland examined three vignettes via 10 online discussion fora each of which provided a narrative summary of their discussion. The paper presents some findings from the analysis of the qualitative data emerging from the student discussions and draws out the lessons learned in terms of how the project was designed and implemented using online discussion fora. 相似文献
979.
David Morris 《Immigrants & Minorities》2016,34(3):297-313
Why did the Irish-born population of Wales decline so sharply in the decade 1861–1870? This paper argues that during the 1850s and 1860s, large numbers of Irish men and women travelled to south Wales in order to finance emigration to the USA. Using the US Federal Census, this paper shows how Irish step-migration through Wales led principally to the Pennsylvania coalfields. This type of migration is termed the Knight’s-move: a sideways move from agriculture into heavy industry, in order to advance forward across the Atlantic. The Knight’s-move challenges previous assumptions about immigration into the south Wales coalfield during the nineteenth century. 相似文献
980.