全文获取类型
收费全文 | 43010篇 |
免费 | 2637篇 |
国内免费 | 1705篇 |
专业分类
管理学 | 5439篇 |
劳动科学 | 1篇 |
民族学 | 602篇 |
人才学 | 5篇 |
人口学 | 3672篇 |
丛书文集 | 2101篇 |
教育普及 | 2篇 |
理论方法论 | 2908篇 |
现状及发展 | 1篇 |
综合类 | 10476篇 |
社会学 | 15554篇 |
统计学 | 6591篇 |
出版年
2023年 | 203篇 |
2022年 | 214篇 |
2021年 | 413篇 |
2020年 | 870篇 |
2019年 | 1638篇 |
2018年 | 1912篇 |
2017年 | 2140篇 |
2016年 | 2138篇 |
2015年 | 1637篇 |
2014年 | 1763篇 |
2013年 | 6158篇 |
2012年 | 2300篇 |
2011年 | 1949篇 |
2010年 | 1479篇 |
2009年 | 1184篇 |
2008年 | 1122篇 |
2007年 | 962篇 |
2006年 | 971篇 |
2005年 | 1481篇 |
2004年 | 1258篇 |
2003年 | 1022篇 |
2002年 | 844篇 |
2001年 | 1010篇 |
2000年 | 955篇 |
1999年 | 729篇 |
1998年 | 553篇 |
1997年 | 500篇 |
1996年 | 570篇 |
1995年 | 495篇 |
1994年 | 486篇 |
1993年 | 472篇 |
1992年 | 549篇 |
1991年 | 522篇 |
1990年 | 482篇 |
1989年 | 461篇 |
1988年 | 489篇 |
1987年 | 407篇 |
1986年 | 368篇 |
1985年 | 444篇 |
1984年 | 437篇 |
1983年 | 383篇 |
1982年 | 333篇 |
1981年 | 279篇 |
1980年 | 255篇 |
1979年 | 315篇 |
1978年 | 267篇 |
1977年 | 240篇 |
1976年 | 196篇 |
1975年 | 218篇 |
1974年 | 184篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
931.
Lars Fritzsche Dominika Wach Franziska Jungmann Jürgen Wegge 《Gruppendynamik und Organisationsberatung》2017,48(2):127-135
This report focuses on the divisions within and between teams. Such research is often associated with the phenomenon of “diversity”. Empirical evidence regarding the effects of diversity on teamwork is inconsistent, partly due to methodological limitations. We propose to use the concept of “faultlines” as hypothetical lines that divide teams into homogenous subgroups. Measuring faultlines as an objective indicator of team composition represents an innovative method for integrating several diversity attributes (e.?g., age, gender, and ethnicity). We provide an overview of the current research on faultlines and show detrimental effects of faultlines on team performance. Additionally, we present the results of two studies from the automotive industry, focusing on the relation between faultlines and organizational outcomes such as employee health, team performance and team identification. Finally, we conclude that the analysis of objective faultlines offers relevant implications for research and practice. Future research should also consider the role of subjectively experienced faultlines. 相似文献
932.
This paper explores the boundary of the set of reaction networks that have an exact transient (truncated) multidimensional Poisson or product-form distribution for the number of particles of different types. Motivated by the birth–death process, we introduce the notions of transient detailed balance and delay functions, and use these notions to obtain the novel transient product-form distribution in a coagulation-fragmentation process for polymers with a tree-like structure from that of the pure coagulation process. 相似文献
933.
Sondra S. Teske Mark H. Weir Timothy A. Bartrand Yin Huang Sushil B. Tamrakar Charles N. Haas 《Risk analysis》2014,34(5):911-928
The effect of bioaerosol size was incorporated into predictive dose‐response models for the effects of inhaled aerosols of Francisella tularensis (the causative agent of tularemia) on rhesus monkeys and guinea pigs with bioaerosol diameters ranging between 1.0 and 24 μm. Aerosol‐size‐dependent models were formulated as modification of the exponential and β‐Poisson dose‐response models and model parameters were estimated using maximum likelihood methods and multiple data sets of quantal dose‐response data for which aerosol sizes of inhaled doses were known. Analysis of F. tularensis dose‐response data was best fit by an exponential dose‐response model with a power function including the particle diameter size substituting for the rate parameter k scaling the applied dose. There were differences in the pathogen's aerosol‐size‐dependence equation and models that better represent the observed dose‐response results than the estimate derived from applying the model developed by the International Commission on Radiological Protection (ICRP, 1994) that relies on differential regional lung deposition for human particle exposure. 相似文献
934.
Stephanie G. Schartel Dunn Gwendelyn S. Nisbett 《Atlantic journal of communication》2017,25(3):197-206
Fandom and psychological reactance theory, a framework for understanding reactions to messages perceived to limit an individual’s freedom to choose freely, are used to examine the influence of sports celebrities. An experiment was conducted (n = 283) to examine the impact of source similarity and controlling language use on reactance levels and message evaluations. Findings suggest that sources perceived to be similar generated less reactance than dissimilar sources. Similar source messages were also linked to greater potential for information-seeking behavior. High- versus low-controlling language use was examined in conjunction with similarity; low-controlling language was found to generate the least reactance regardless of source similarity. Implications for the use of celebrity advocacy in marketing and public relations are discussed. 相似文献
935.
Nicholas J. Miller 《Immigrants & Minorities》2017,35(2):87-107
This article examines the movement of Orthodox Christian refugees from Bosnia to the Habsburg Monarchy in the 1530s and their settlement in a district called ?umberak. The movement of these Uskoks has never been examined in the context of refugee studies. This study of a refugee movement and settlement over a five-century period offers the possibility of reaching a better understanding of the long-term outcome of refugee movements. Ultimately, this article suggests that the refugees affected the land they settled as much as the settlement zone affected them, and that, in this case, the refugees were able to define their own outcome. 相似文献
936.
Alazne Aizpitarte Itziar Alonso‐Arbiol Fons J. R. Van de Vijver 《Journal of research on adolescence》2017,27(4):797-809
Dating violence is a serious public health issue that needs further understanding in terms of risk factors that may be involved in it. The main goal of this study was to test a mediational model of dating violence risk factors. The sample was composed of 477 secondary and college students from Spain (59% females). A dynamic developmental explanatory model considering aggressiveness, insecure attachment, interparental conflict, and peer dating violence was tested using a multigroup structural equation model. Aggressiveness partially mediated the relation between anxious attachment and dating violence and fully mediated the association between interparental conflict resolution and dating violence. Furthermore, perceived peer dating violence was a direct predictor of dating violence. Implications for prevention and intervention plans are discussed. 相似文献
937.
Why social status matters for understanding the interrelationships between testosterone,economic risk‐taking,and gender 下载免费PDF全文
We conduct an extensive review of the literature on testosterone and economic risk‐taking behavior. In sum, there is evidence of a positive association between testosterone and economic risk taking, although it is unlikely to be a strong association given the abundance of null results. However, we argue that the existing literature may overstate the causal effects of testosterone on economic risk taking (or even report a spurious correlation) because this research has not considered the potentially confounding role of social status. Status could concurrently influence both testosterone and economic risk taking, given that testosterone is a social hormone with a reciprocal relationship with social status, and social status has been found to drive risk‐taking behavior. We also argue against using findings from this literature to make gender essentialist claims, primarily because social phenomena influence the size—and existence—of gender differences in economic risk‐taking behavior. We conclude with suggestions for future research. 相似文献
938.
939.
For manifest variables with additive noise and for a given number of latent variables with an assumed distribution, we propose
to nonparametrically estimate the association between latent and manifest variables. Our estimation is a two step procedure:
first it employs standard factor analysis to estimate the latent variables as theoretical quantiles of the assumed distribution;
second, it employs the additive models’ backfitting procedure to estimate the monotone nonlinear associations between latent
and manifest variables. The estimated fit may suggest a different latent distribution or point to nonlinear associations.
We show on simulated data how, based on mean squared errors, the nonparametric estimation improves on factor analysis. We
then employ the new estimator on real data to illustrate its use for exploratory data analysis. 相似文献
940.