全文获取类型
收费全文 | 31150篇 |
免费 | 876篇 |
国内免费 | 2篇 |
专业分类
管理学 | 4536篇 |
民族学 | 134篇 |
人才学 | 1篇 |
人口学 | 2827篇 |
丛书文集 | 145篇 |
教育普及 | 5篇 |
理论方法论 | 2740篇 |
现状及发展 | 1篇 |
综合类 | 429篇 |
社会学 | 15526篇 |
统计学 | 5684篇 |
出版年
2023年 | 165篇 |
2021年 | 189篇 |
2020年 | 448篇 |
2019年 | 633篇 |
2018年 | 784篇 |
2017年 | 1062篇 |
2016年 | 844篇 |
2015年 | 589篇 |
2014年 | 793篇 |
2013年 | 5372篇 |
2012年 | 1023篇 |
2011年 | 959篇 |
2010年 | 738篇 |
2009年 | 653篇 |
2008年 | 719篇 |
2007年 | 741篇 |
2006年 | 780篇 |
2005年 | 707篇 |
2004年 | 623篇 |
2003年 | 567篇 |
2002年 | 644篇 |
2001年 | 788篇 |
2000年 | 774篇 |
1999年 | 677篇 |
1998年 | 490篇 |
1997年 | 438篇 |
1996年 | 495篇 |
1995年 | 472篇 |
1994年 | 473篇 |
1993年 | 485篇 |
1992年 | 546篇 |
1991年 | 510篇 |
1990年 | 501篇 |
1989年 | 468篇 |
1988年 | 461篇 |
1987年 | 397篇 |
1986年 | 384篇 |
1985年 | 430篇 |
1984年 | 416篇 |
1983年 | 364篇 |
1982年 | 333篇 |
1981年 | 270篇 |
1980年 | 268篇 |
1979年 | 291篇 |
1978年 | 256篇 |
1977年 | 233篇 |
1976年 | 209篇 |
1975年 | 226篇 |
1974年 | 172篇 |
1973年 | 161篇 |
排序方式: 共有10000条查询结果,搜索用时 875 毫秒
141.
Testing symmetry under a skew Laplace model 总被引:3,自引:0,他引:3
Tomasz J. Kozubowski Anna K. Panorska 《Journal of statistical planning and inference》2004,120(1-2):41-63
We develop tests of hypothesis about symmetry based on samples from possibly asymmetric Laplace distributions and present exact and limiting distribution of the test statistics. We postulate that the test statistic derived under the Laplace model is a rational choice as a measure of skewness and can be used in testing symmetry for other, quite general classes of skew distributions. Our results are applied to foreign exchange rates for 15 currencies. 相似文献
142.
Mr. Patrick J. Morrissette M.S.ED. 《Child and Adolescent Social Work Journal》1994,11(3):235-246
This paper proposes a developmental framework for foster parents and outlines four distinct growth stages. Such a framework can be of value to program administrators who are required to assess foster parent development during the crucial matching process. To draw a distinction between each developmental stage, specific instrumental tasks and indicators are outlined. 相似文献
143.
Astrid Schreyögg 《Organisationsberatung, Supervision, Coaching》2002,9(3):203-204
Ohne Zusammenfassung 相似文献
144.
Stolzenberg Lisa D'Alessio Stewart J. Rivers James E. Newell Augusto L. 《Social indicators research》2003,61(1):19-57
Determining the size and demographiccharacteristics of substance abuse populationsis extremely important for implementing publicpolicies aimed at the control of substanceabuse. Such information not only assists in theallocation of limited treatment resources bythe state, but also in the monitoring ofsubstance abuse trends over time and in theevaluation of innovative policy initiatives. Inthis study, we develop three composite measuresof treatment need. We then use these measuresto estimate treatment need for alcohol abuseand for controlled substance abuse within eachof Florida's 67 counties. This study providesan important empirical component of communityplanning, quantifying and, to a limited degree,specifying the level of need for the substanceabuse treatment of community residents. Anadditional benefit is the development of a costeffective and unobtrusive methodology fordetermining empirically when levels of need arechanging so that treatment levels can beadjusted accordingly. With proper use,policymakers can readily employ the methodologydeveloped in this study in Florida andelsewhere to make better-informed decisions inthe allocation of finite substance abusetreatment resources. 相似文献
145.
Robert J. Wheeler 《Social indicators research》1991,24(1):71-79
A comprehensive set of variables that have been supported as contributing to overall health and general well-being were analyzed to determine their simple structure using factor analysis and their relative contribution using Pearson correlation. The contributors to general well-being had been theoretically grouped into: emotions, beliefs, temperaments, behaviors, sittuations, experiences and health. The empirical factor structure was compared with the theoretical structure used to develop the variables. Stability was investigated by comparing results with those of another geographically separated group. All subjects were normally functioning working adults. The results demonstrated the feasibility and potential usefulness of using self-report questionnaires with multivariate procedures to measure components of the global general well-being concept. 相似文献
146.
Abstract This study examines the contentions of two recent perspectives on rural economic organization and their implications for poverty. Building from (1) agrarian political economy and (2) the rural restructuring literatures, we present a comparative regional analysis of how farming patterns and other aspects of economic organization differentially affect poverty in rural areas. Data are based on 2,349 nonmetropolitan U.S. counties for the 1970–1980 period. Nonhired labor-dependent, family-operated farming (smaller and larger family farming) has relatively similar cross-regional effects on rural poverty. The effects of industrialized farming are more spatially variant, suggesting that this type of farming is integrated into regional political economies in different ways than are simple commodity units. However, farming patterns have only a small effect on rural poverty relative to other factors, such as the local employment structure, characteristics of the population, and geographic location. The results of this study highlight the need to move beyond the farm sector to understand both the dynamics of this sector and the socioeconomic consequences of rural restructuring. More broadly, the study underscores the importance of testing general sociological relationships under different spatial (e.g., regional) contexts. 相似文献
147.
Despite high expectations, students of the 1960 and 1976 presidentialdebates were unable to find much evidence that these eventssignificantly affected voters' candidate preferences. As a result,scholars have turned increasingly to cognitive consistency theoriesto explain viewers' reactions (Or nonreactions) to debates.This article argues that one key mediating variable determiningwhether or not voters are influenced by debates is their levelof political knowledge. Looking at the largely ignored 1980Carter-Reagan debate, we find that voters with generally lowlevels of knowledge are particularly affected by the debate,and significant shifts in candidate preferences do occur amongthis group. The evidence suggests that the debate was an importantfactor in Ronald Reagan's bid to unseat his Democratic opponent. 相似文献
148.
Asian and White middle school children were shown photographs of unknown Afro-Caribbean, Asian, and White individuals of approximately the same age as themselves, and asked which one wax most like them, which one they would prefer to be, which ones they would prefer to engage in various activities with, and finally, to allocate positive and negative traits to the three groups or to nobody. A similar majority of both Asian and While children selected an own-race photograph as being most like them, but only about a half selected the own-race photograph as the one they would most like to he. For sharing activities, children showed a strong own-tender preference, followed by an own-race preference. White children stated a greater preference for sharing activities with White children, then with Afro-Caribbean children, and least with Asian children. Asian children preferred Asian and White children the most, Afro-Caribbean the least. On a stereotypes test, similar trends were obtained; White children evaluated While children highest and Asian lowest; Asian children tended to evaluate Asian children highest but to a nonsignificant extent. The relative proportion of Asian/White children in school appeared to have little systematic influence on the results, thus arguing against the contact hypothesis of prejudice reduction in its simple form. 相似文献
149.
Blaine J. Fowers Kelly H. Montel David H. Olson 《Journal of marital and family therapy》1996,22(1):103-119
Recent studies have shown that group differences in marital stability and satisfaction can be predicted based on premarital relationship quality. There is also a growing literature indicating that there are distinct types of relationships, both premaritally and developmentally over time. This study examined the relationship between the four premarital types (Vitalized, Harmonious, Traditional, and Conflicted) identified by Fowers and Olson (1992) and relationship outcome over a 3-year period with 393 couples. A substantial relationship was found, with conflicted couples being the most likely to separate or divorce. Vitalized couples had the highest levels of satisfaction, followed by Harmonious, Traditional, and Conflicted couples. Traditional couples were less likely to have divorced than Harmonious couples, even though Harmonious couples had higher premarital relationship satisfaction scores. 相似文献
150.
Gerhard Meyer Ph.D. 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1992,8(1):11-20
The development of the gambling market in the Federal Republic of Germany since the middle of the seventies and data on pathological gamblers seeking help are described. The continuously increasing supply, together with increases in turnover, was followed-with some temporal delay-by an increase in the number of gamblers who sought advice and treatment. Preliminary measures taken by the health authorities as well as some consequences of pathological gambling are discussed.This article is a translation of a German article published in: Deutsche Hauptstelle gegen die Suchtgefahren (1990): Jahrbuch '91 zur Frage der Suchtgefahren. Hamburg: Neuland-Verlag. 相似文献