全文获取类型
收费全文 | 14618篇 |
免费 | 298篇 |
国内免费 | 1篇 |
专业分类
管理学 | 1788篇 |
民族学 | 88篇 |
人才学 | 3篇 |
人口学 | 1381篇 |
丛书文集 | 64篇 |
理论方法论 | 1281篇 |
综合类 | 164篇 |
社会学 | 6934篇 |
统计学 | 3214篇 |
出版年
2023年 | 91篇 |
2022年 | 97篇 |
2021年 | 106篇 |
2020年 | 280篇 |
2019年 | 322篇 |
2018年 | 513篇 |
2017年 | 657篇 |
2016年 | 452篇 |
2015年 | 340篇 |
2014年 | 409篇 |
2013年 | 2667篇 |
2012年 | 619篇 |
2011年 | 416篇 |
2010年 | 379篇 |
2009年 | 292篇 |
2008年 | 329篇 |
2007年 | 319篇 |
2006年 | 311篇 |
2005年 | 292篇 |
2004年 | 232篇 |
2003年 | 251篇 |
2002年 | 255篇 |
2001年 | 354篇 |
2000年 | 308篇 |
1999年 | 288篇 |
1998年 | 216篇 |
1997年 | 180篇 |
1996年 | 227篇 |
1995年 | 199篇 |
1994年 | 213篇 |
1993年 | 177篇 |
1992年 | 212篇 |
1991年 | 225篇 |
1990年 | 205篇 |
1989年 | 179篇 |
1988年 | 202篇 |
1987年 | 188篇 |
1986年 | 150篇 |
1985年 | 187篇 |
1984年 | 184篇 |
1983年 | 164篇 |
1982年 | 129篇 |
1981年 | 100篇 |
1980年 | 103篇 |
1979年 | 129篇 |
1978年 | 102篇 |
1977年 | 91篇 |
1975年 | 73篇 |
1974年 | 74篇 |
1973年 | 69篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
161.
162.
163.
Kerry S. Leavitt Sarah A. Gardner Mary M. Gallagher Gerald Schamess 《Clinical Social Work Journal》1998,26(1):55-71
Siblings who have suffered severe trauma and disrupted attachment relate to one another in ways that interfere with individual development, the chance to benefit from connections with adults, the establishment of healthy sibling relationships, and the working through of traumatic experiences. The authors use case examples to illustrate four distinct sibling patterns: absent, adult lockout, half and half, and trauma shield. The authors highlight the importance of recognizing these types and then varying the therapist's treatment stance to pursue five goals. These include suspending problematic sibling relationships to create room for bonding with caring adults, transferring attachment behaviors and impulses to a receptive adult, resuming healthy individual development, forming more adaptive sibling connections, and expressing shared traumatic content. 相似文献
164.
Beyond the theoretical basis for integration, three core considerations stand out as the primary reasons for pursuing integration from a physician's perspective. In the authors' experience, the ability to make a case for physician integration stands or falls based on the ability of the integrated delivery system to address these considerations: Gain greater access to capital; develop human resources with talents in managed care and the full spectrum of care services; and sustain an information infrastructure. This article explores the lessons learned in pursuing physician integration. 相似文献
165.
Lee SY 《Korea journal of population and development》1996,25(2):235-267
The author argues that the effect of sex preference must be disentangled from the effect of number preference in Korea. This study tests--with hazard models--the effect of the number of previous children on the next birth according to the sex composition of previous children. Data were obtained from the 1974 Korean Fertility Survey. This paper also analyzes the timing of childbearing in recent periods in order to determine whether replacement-level fertility is temporary or permanent. The ideal number of children declined from 3.9 children in 1965 to 2.1 in 1991. The age-specific fertility rates for ages 20-24 years declined rapidly during the late 1980s. The fertility rates among women aged 25-29 years and 30-34 years increased during 1985-90. The proportion of fertility among women aged 20-29 years increased from 67.9% in 1975 to 86.6% in 1984. Women born in the late baby boom period of the late 1950s to mid-1960s reached prime reproductive age during the late 1980s and 1990s, but the crude birth rate remained about the same during 1985-92. A higher percentage of women (22.4%) born during 1955-59 remained single in 1990. During 1960-90, the percentage of women aged 20-24 years who were married declined. These trends indicate later age at childbearing and an explanation for the temporary nature of below-replacement fertility in the late 1980s. Korean women did not want to have more than 2 children, and the interval between first and second births increased since 1985. Among pregnancies of parity 2 conceived since 1985, over 90% of women with at least one son ended subsequent pregnancies by abortion compared to only 59% without sons. Hazard models of 1974 data reveal that son preference had an important effect on fertility. Fertility was higher among women with only daughters. Findings suggest that the value of sons must be measured at the societal and not at the individual level. 相似文献
166.
This paper introduces a new axiom for choice in preference profiles and tournaments, called composition-consistency. A social choice function is composition-consistent if it is non-sensitive to the cloning of one or several outcomes. The key feature of the composition consistency property is an operation concept called multiple composition product of profiles. The paper provides a brief overview of some social choice functions studied in the literature. Concerning the tournament solutions, it is proved that the Top Cycle, the Slater and the Copeland solutions are not composition-consistent, whereas the Banks, Uncovered Set, TEQ, Minimal Covering Set are composition-consistent. Moreover, we define the composition-consistent hull of a solution as the smallest composition-consistent solution containing . The composition-consistent hulls of the Top cycle and Copeland solutions are specified, and we give some hints about the location of the hull of the Slater set. Concerning social choice functions, it is shown that Kemeny, Borda and Minimax social choice functions are not composition-consistent, whereas the Paretian one is composition-consistent. Moreover, we prove that the latter is the composition-consistent hull of the Borda and Minimax functions. 相似文献
167.
Experiments involving large social units, such as schools, work sites, or whole cities, are commonly limited in statistical power because the number of randomized units is small, leaving few degrees of freedom for residual (between-unit) error. The authors describe a method for increasing residual degrees of freedom in a community experiment without substantially increasing cost or difficulty. In brief, they propose that the experimental units should be divided into random subsamples (batches). Batch sampling can improve statistical power if the community endpoint means are stable over time or if their temporal variation is comparable in period to the batch-sampling schedule. The authors demonstrate the theoretical advantages of the batch system and illustrate its use with data from the Pawtucket Heart Health Program, in which such a design was implemented. 相似文献
168.
Sensitive research issues call for anonymous questionnaires. This makes accurately matching pretests with posttests difficult or impossible. Various subject-generated coding schemes have been developed, but their accuracy has been unknown. This anonymous study, with 745 students, used subject-generated coding to match pretests with posttests. The matching was verified for accuracy with the use of a collateral, anonymous, sticker identification system. The coding system was able to accurately match 75.2% of all the pretest-posttest pairs. An additional 22.1% of the pairs were left unmatched and only 2.7% were matched incorrectly. Subject-generated coding systems can be very effective where confidentiality is important to protect. 相似文献
169.
170.
Emmott S 《Gender and development》1996,4(1):31-38
Millions of people have become refugees or been displaced within Afghanistan during 17 years of war within the country. Conversations with women in a camp for the displaced reveal what it means for women to lose their homes, especially in the context of ongoing instability and conflict. Sections discuss homelessness in Kabul, linking psycho-social and practical needs, coping with dislocation, stability and land ownership, mobility and security, family breakdown, temporary and permanent settlements, and meeting needs versus creating dependency. The author concludes that among people displaced from their homes for so many years, their physical and spiritual homes nonetheless remain inseparable from their lives. It is important to maintain the individual notion of home if life is to be worth living and hope retained. Relief agencies must help in an appropriate manner and to an appropriate extent. Oxfam has been working beyond the refugee camps, in a return to the city of Kabul, since July 1995. When this article was written, the NGO was involved in a joint venture to restore the piped water supply which, like the electricity supply, was looted and damaged. It also plans to distribute plastic sheeting for use as roofs and floor covering during the winter. Oxfam currently plans discreet activities rather than an integrated approach. 相似文献