全文获取类型
收费全文 | 20319篇 |
免费 | 404篇 |
国内免费 | 1篇 |
专业分类
管理学 | 2850篇 |
民族学 | 87篇 |
人才学 | 1篇 |
人口学 | 1996篇 |
丛书文集 | 78篇 |
教育普及 | 3篇 |
理论方法论 | 1865篇 |
现状及发展 | 1篇 |
综合类 | 264篇 |
社会学 | 9994篇 |
统计学 | 3585篇 |
出版年
2023年 | 99篇 |
2021年 | 124篇 |
2020年 | 320篇 |
2019年 | 416篇 |
2018年 | 504篇 |
2017年 | 701篇 |
2016年 | 546篇 |
2015年 | 407篇 |
2014年 | 498篇 |
2013年 | 3184篇 |
2012年 | 681篇 |
2011年 | 669篇 |
2010年 | 477篇 |
2009年 | 404篇 |
2008年 | 488篇 |
2007年 | 490篇 |
2006年 | 480篇 |
2005年 | 468篇 |
2004年 | 420篇 |
2003年 | 403篇 |
2002年 | 438篇 |
2001年 | 528篇 |
2000年 | 540篇 |
1999年 | 476篇 |
1998年 | 348篇 |
1997年 | 311篇 |
1996年 | 325篇 |
1995年 | 309篇 |
1994年 | 284篇 |
1993年 | 295篇 |
1992年 | 342篇 |
1991年 | 320篇 |
1990年 | 287篇 |
1989年 | 293篇 |
1988年 | 289篇 |
1987年 | 252篇 |
1986年 | 246篇 |
1985年 | 278篇 |
1984年 | 267篇 |
1983年 | 254篇 |
1982年 | 215篇 |
1981年 | 180篇 |
1980年 | 166篇 |
1979年 | 195篇 |
1978年 | 177篇 |
1977年 | 159篇 |
1976年 | 134篇 |
1975年 | 157篇 |
1974年 | 118篇 |
1973年 | 115篇 |
排序方式: 共有10000条查询结果,搜索用时 11 毫秒
91.
Few researchers have examined organizational variation in the adoption of workplace drug testing, but innovation theory suggests that adoption is more likely when it is compatible with an organization's values, previously introduced ideas, and needs. Using data from the 1997 National Employee Survey, this research models the effects of organizational compatibility, industry, and establishment size on the adoption of drug testing. The data reveal that compatibility, as measured by an organization's rules orientation, presence of an employee assistance program, and mechanization, is associated with the adoption of drug testing. As predicted, the adoption of drug testing varies across industries and by establishment size. 相似文献
92.
93.
94.
FINNEY DJ 《Journal of the American Statistical Association》1948,43(244):566-571
95.
Over the first years of life, infants gradually develop the ability to retrieve their memories across cue and contextual changes. Whereas maturational factors drive some of these developments in memory ability, experiences occurring within the learning event may also impact infants' ability to retrieve memories in new situations. In 2 experiments we examined whether it was possible to facilitate 12‐month‐old infants' generalization of learning in the deferred imitation paradigm by varying experiences before or during the demonstration session, or during the retention interval. In Experiment 1, altering the length, timing, or variability of training had no impact on generalization; infants showed a low, but consistent level of memory retrieval. In Experiment 2, infants who experienced a unique context for encoding and retrieval exhibited generalization; infants who experienced the context prior to the demonstration session, or during the retention interval, did not. Specificity is a robust feature of infant memory and is not substantially altered by encoding experiences in an observational learning paradigm. Previous history with a learning environment can, however, impact the flexibility of memory retrieval. 相似文献
96.
The Alchian and Allen theorem predicts that it will be harder to find "good" apples in the State of Washington, a prime apple-growing region, than in, say, New York City, where the addition of shipping charges makes "bad" apples comparatively more expensive. We recast the theorem as a testable proposition by explicitly taking the supply side into account and identifying plausible scenarios in which a fixed cost either has no effect on the relative prices of high and low quality grades of the same good in distant markets or, indeed, causes more of the bad apples to be shipped out. 相似文献
97.
Paul J. E. Miller John P. Caughlin Ted L. Huston 《Journal of marriage and the family》2003,65(4):978-995
This study examined the processes that underlie the association between trait expressiveness and marital satisfaction. A total of 168 newlywed couples participated in a four‐wave, 13‐year longitudinal study of marriage. Cross‐sectional and longitudinal path analyses suggested that expressiveness promotes satisfaction by leading spouses to engage in affectionate behavior and by leading them to idealize their partner. Expressive people formed idealized images of their partner because they brought out the best in their partner's behavior and because they interpreted their partner's behavior in a favorable light. The study extends previous research by showing that the benefits of trait expressiveness extend into the second decade of marriage and by providing a plausible explanation of the connections between trait expressiveness and marital satisfaction. 相似文献
98.
Nonlinguistic communication is typically proposed to convey representational messages, implying that particular signals are associated with specific signaler emotions, intentions, or external referents. However, common signals produced by both nonhuman primates and humans may not exhibit such specificity, with human laughter for example showing significant diversity in both acoustic form and production context. We therefore outline an alternative to the representational approach, arguing that laughter and other nonlinguistic vocalizations are used to influence the affective states of listeners, thereby also affecting their behavior. In the case of laughter, we propose a primary function of accentuating or inducing positive affect in the perceiver in order to promote a more favorable stance toward the laugher. Two simple strategies are identified, namely producing laughter with acoustic features that have an immediate impact on listener arousal, and pairing these sounds with positive affect in the listener to create learned affective responses. Both depend on factors like the listener's current emotional state and past interactions with the vocalizer, with laughers predicted to adjust their sounds accordingly. This approach is used to explain findings from two experimental studies that examined the use of laughter in same-sex and different-sex dyads composed of either friends or strangers, and may be applicable to other forms of nonlinguistic communication. 相似文献
99.
Urban elites are increasingly addressing local social problems though policies that turn their cities into tourist destinations. Often at the heart of these policies are new publicly financed sports stadiums. Ironically, this strategy is flourishing despite near-unanimous academic criticism, and increasing public skepticism, about this approach. Our research addresses this contradiction by exploring how and why powerful decisionmakers continue supporting publicly financed stadiums. We rely on local growth coalition theory to explore this topic because it offers analytical advantages, including looking beyond local sports teams as the focal point of these initiatives, addressing the variation in the outcomes of these initiatives, and acknowledging that policymakers are predisposed toward supporting these initiatives but that this predisposition does not always result in success. 相似文献
100.
Drug treatment courts (DTCs), an alternative to traditional criminal courts, provide an innovative way to legally process some drug offenders. The origin and recent growth of the drug court system in the USA can be explained as an unintended consequence of a failing 'war on drugs'. In this article, we discuss the spread of adult DTCs throughout the USA, the main components of drug courts, controversies surrounding DTCs, and some criticisms of drug courts. We summarize the recent evaluations of adult DTCs, and highlight various DTC factors that have been found to reduce individual drug use and criminal activity. We also offer suggestions for future research on DTCs and conclude with policy recommendations. 相似文献