全文获取类型
收费全文 | 19695篇 |
免费 | 397篇 |
国内免费 | 1篇 |
专业分类
管理学 | 2594篇 |
民族学 | 111篇 |
人口学 | 1725篇 |
丛书文集 | 74篇 |
教育普及 | 1篇 |
理论方法论 | 1745篇 |
综合类 | 185篇 |
社会学 | 9899篇 |
统计学 | 3759篇 |
出版年
2023年 | 131篇 |
2022年 | 91篇 |
2021年 | 133篇 |
2020年 | 346篇 |
2019年 | 513篇 |
2018年 | 607篇 |
2017年 | 790篇 |
2016年 | 609篇 |
2015年 | 407篇 |
2014年 | 569篇 |
2013年 | 3508篇 |
2012年 | 731篇 |
2011年 | 681篇 |
2010年 | 498篇 |
2009年 | 403篇 |
2008年 | 531篇 |
2007年 | 484篇 |
2006年 | 521篇 |
2005年 | 406篇 |
2004年 | 418篇 |
2003年 | 351篇 |
2002年 | 363篇 |
2001年 | 468篇 |
2000年 | 412篇 |
1999年 | 402篇 |
1998年 | 311篇 |
1997年 | 261篇 |
1996年 | 278篇 |
1995年 | 288篇 |
1994年 | 246篇 |
1993年 | 256篇 |
1992年 | 299篇 |
1991年 | 294篇 |
1990年 | 288篇 |
1989年 | 253篇 |
1988年 | 238篇 |
1987年 | 201篇 |
1986年 | 229篇 |
1985年 | 249篇 |
1984年 | 216篇 |
1983年 | 191篇 |
1982年 | 159篇 |
1981年 | 130篇 |
1980年 | 155篇 |
1979年 | 170篇 |
1978年 | 133篇 |
1977年 | 114篇 |
1976年 | 87篇 |
1975年 | 91篇 |
1974年 | 93篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
Although there has recently been a rise in parenting support programmes within the UK, only a minority of these programmes have benefited from evaluation of either outcomes or processes. This paper describes the development of the PALS programme (Parents Altogether Lending Support), reporting both on its effectiveness in improving parents' interactions with their children and on the lessons that were learned about embedding such a programme within the local community. Over the 18‐month period of the programme, a total of 17 courses were run, with 75 parents and carers (primarily mothers) participating in the programme overall. Evaluation results indicated that participants enjoyed the course and found it beneficial, particularly in terms of altering their own actions in specific ways that were able to promote better behaviour on the part of their children. Participants also valued the opportunity to share their experiences with other parents. The key lesson identified in regard to the development of parenting programmes concerned the need for the community to feel a sense of ownership for the initiative. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
3.
Ruffin M. Holt 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2002,13(1):94-95
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - 相似文献
4.
Existence and Nash implementation of efficient sharing rules for a commonly owned technology 总被引:2,自引:0,他引:2
Suppose that a group of individuals owns collectively a technology which produces a consumption good by means of a (possibly
heterogeneous) input. A sharing rule associates input contributions with a vector of consumptions that are technologically
feasible. We show that the set of allocations obtained by any continuous sharing rule contains Pareto efficient allocations.
We also present a mechanism that implements in Nash equilibrium the Pareto efficient allocations contained in an arbitrary
sharing rule.
Received: 29 June 1998/Accepted: 15 November 2000 相似文献
5.
Steven M. Harris 《Journal of marital and family therapy》2002,28(3):383-387
Bailey, C. E. (Ed.) (2000). Children in therapy: Using the family as a resource. Doherty, W. J. (2001). Take back your marriage: Sticking together in a world that pulls us apart. New York: Guilford. Larson, J. H. (2000). Should we stay together? A scientically proven method for evaluating your relationship and improving its chances for long‐term success. Weiner‐Davis, M. (2001). The divorce remedy: The proven 7‐step program for saving your marriage. 相似文献
6.
The histories and service needs of 2 groups of homeless women, those unaccompanied by minor children (n = 46) and those accompanied by minor children (n = 22), were compared, on the basis of their responses to a biennial survey of homeless people in a midsize city in the southeast United States. Mothers of children aged 2–10 also completed a measure of stress symptoms for their children (n = 20). Irrespective of family status group, problems such as substance abuse, history of mental illness, health problems, chronicity of homelessness, and crime victimization tended to cluster together. The findings also suggest that declining and/or inadequate levels of public benefits, Temporary Assistance to Needy Families, and Medicaid-funded health care in particular, have adversely affected the 2 groups, particularly families with children. The young children in this sample experienced elevated levels of stress, and significant associations were found between children's stress levels and certain risk factors of their mothers. Implications for service delivery are discussed. 相似文献
7.
Susan D. Calkins Susan E. Dedmon Kathryn L. Gill Laura E. Lomax Laura M. Johnson 《Infancy》2002,3(2):175-197
A study sample of 162 six‐month‐old children was selected from a larger sample of 346 infants on the basis of parents' report of their infants' temperament and a laboratory assessment of temperament. Infants were classified as easily frustrated and less easily frustrated and compared on a number of emotion regulation, physiology, and temperament measures. Results indicated that male and female infants were equally likely to be classified as frustrated and less easily frustrated; however, male infants were less able to regulate physiologically. Easily frustrated infants used different emotion regulation strategies and were observed to be less attentive and more active than less easily frustrated infants when observed in the laboratory. These infants were also characterized by their parents as more active, less attentive, and more distressed to novelty. Infants classified as easily frustrated were more reactive physiologically and less able to regulate physiological reactivity than their less easily frustrated counterparts. It is hypothesized that this cluster of characteristics may constitute a unique temperamental type that may have implications for other types of behavioral functioning. Limitations of the study are that observations are based on a single brief assessment of the infant, modest effect sizes were found, and the study is cross‐sectional. 相似文献
8.
A.M. Mathai 《Revue canadienne de statistique》1993,21(3):277-283
The product of two independent or dependent scalar normal variables, sums of products, sample covariances, and general bilinear forms are considered. Their distributions are shown to belong to a class called generalized Laplacian. A growth-decay mechanism is also shown to produce such a generalized Laplacian. Sets of necessary and sufficient conditions are derived for bilinear forms to belong to this class. As a generalization, the distributions of rectangular matrices associated with multivariate normal random vectors are also discussed. 相似文献
9.
Ruffin M. Holt 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2002,13(2):200-202
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - 相似文献
10.
Abstract In recent years, church burnings in the South have attracted a great deal of attention. Many commentators have charged that they are a product of strained race relations throughout the South, and particularly of severe racial tensions in Southern rural areas. In this study we evaluate these claims. We begin by mapping the spatial coordinates of recorded church burnings from 1990 to 1997, and find that church arsons indeed are concentrated in the South. Church burnings, however, are a more urban phenomenon than popular media accounts would suggest. Our analysis then explores the influence of contextual factors (population and locale, racial composition and inequality, so‐cioeconomic conditions, local religious ecology, and patterns of reported crime) on church burnings in counties located in the study region. Logistic regression models confirm that church arsons are most likely to occur in small metropolitan statistical areas (MSAs) and non‐MSA counties containing a city of at least 10,000 residents. Church burnings also are especially likely in counties with a higher percentage of black residents, a larger number of churches relative to the rest of the state, and a higher arson rate. We conclude by discussing the implications of these findings for future research and public policy. 相似文献