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排序方式: 共有490条查询结果,搜索用时 15 毫秒
91.
Yang Yandan Ng Hon Keung Tony Balakrishnan Narayanaswamy 《AStA Advances in Statistical Analysis》2019,103(1):69-98
AStA Advances in Statistical Analysis - In science and engineering, we are often interested in learning about the lifetime characteristics of the system as well as those of the components that made... 相似文献
92.
Tony Xing Tan 《Adoption quarterly》2013,16(1):34-49
Children's behavioral difficulties are a major source of parental concern. The goals of the current study were to (1) describe preschool-age adopted Chinese girls’ behaviors that were most concerning to their adoptive mothers and (2) examine the relation between children's concerning behaviors and parent/child demographics. Qualitative data from 422 mothers on 480 adopted Chinese girls (M = 44.2 months, SD = 15.2) were collected using three sequenced methods (i.e., open-ended question, follow-ups, and a focus group discussion). These girls were adopted at 3 to 60 months of age (M = 13.8, SD = 8.0) and had lived in the adoptive homes for at least 6 months (M = 30.2, SD = 14.4). Data analysis showed that 242 (57.3%) mothers (representing 274 girls) reported one to three concerning behaviors per child (total = 323 concerns), including behaviors that indicated attachment problems (107 or 33.1%), poor social skills (46 or 14.2%), language/speech problems (42 or 13%), sleep problems (29 or 9%), health/physical problems (24 or 7.4%), and problems in other areas (e.g., potty training) (75 or 23.2%). Further analysis showed that the mothers with prior experience of raising adopted children, but not biological children, were more likely to report concerning attachment behaviors than first-time mothers. 相似文献
93.
Tony G. Poveda 《Sociology Compass》2009,3(4):559-574
This is a review of the issues and debate over capital punishment in the United States during the post- Furman era (since 1972). It encompasses a review of the legal issues, highlighting major U.S. Supreme Court cases in which the constitutionality of the death penalty has been challenged. These constitutional challenges have included issues of arbitrariness and race discrimination in the application of the death penalty. Also considered is the Court's 'evolving standards of decency' test in terms of what constitutes cruel and unusual punishment under the Eighth Amendment – relative to the execution of juveniles and the mentally retarded and whether lethal injection is cruel and unusual. The post- Furman era death penalty debate is comprised of two phases, both raised questions about public confidence in the criminal justice system. Phase one, occurring in the 1980s and early 1990s, was concerned with the lengthy appeal process and the lack of finality in capital cases. Phase two emerged in the late 1990s and 2000s and focused on the accuracy (wrongful convictions) and fairness (arbitrariness and discrimination) of the administration of capital punishment. The DNA revolution and a parade of high-profile exonerations in the United States contributed to this latter phase. Finally, the death penalty debate is considered from an international and human rights perspective. 相似文献
94.
Tony O'Hagan 《Significance》2005,2(2):84-86
There are various situations in which it may be important to obtain expert opinion about some unknown quantity or quantities. But it is not enough simply to ask the expert for an estimate of the unknown quantity: we also need to know how far from that estimate the true value might be. Tony O'Hagan describes the process of elicitation: the formulation of the expert's knowledge in the form of a probability distribution. 相似文献
95.
J. A. Giesecke W. J. Burns A. Barrett E. Bayrak A. Rose P. Slovic M. Suher 《Risk analysis》2012,32(4):583-600
We investigate the regional economic consequences of a hypothetical catastrophic event—attack via radiological dispersal device (RDD)—centered on the downtown Los Angeles area. We distinguish two routes via which such an event might affect regional economic activity: (i) reduction in effective resource supply (the resource loss effect) and (ii) shifts in the perceptions of economic agents (the behavioral effect). The resource loss effect relates to the physical destructiveness of the event, while the behavioral effect relates to changes in fear and risk perception. Both affect the size of the regional economy. RDD detonation causes little capital damage and few casualties, but generates substantial short‐run resource loss via business interruption. Changes in fear and risk perception increase the supply cost of resources to the affected region, while simultaneously reducing demand for goods produced in the region. We use results from a nationwide survey, tailored to our RDD scenario, to inform our model values for behavioral effects. Survey results, supplemented by findings from previous research on stigmatized asset values, suggest that in the region affected by the RDD, households may require higher wages, investors may require higher returns, and customers may require price discounts. We show that because behavioral effects may have lingering long‐term deleterious impacts on both the supply‐cost of resources to a region and willingness to pay for regional output, they can generate changes in regional gross domestic product (GDP) much greater than those generated by resource loss effects. Implications for policies that have the potential to mitigate these effects are discussed. 相似文献
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Although heterogeneity across individuals may be reduced when a two-state process is extended into a multi-state process, the discrepancy between the observed and the predicted for some states may still exist owing to two possibilities, unobserved mixture distribution in the initial state and the effect of measured covariates on subsequent multi-state disease progression. In the present study, we developed a mixture Markov exponential regression model to take account of the above-mentioned heterogeneity across individuals (subject-to-subject variability) with a systematic model selection based on the likelihood ratio test. The model was successfully demonstrated by an empirical example on surveillance of patients with small hepatocellular carcinoma treated by non-surgical methods. The estimated results suggested that the model with the incorporation of unobserved mixture distribution behaves better than the one without. Complete and partial effects regarding risk factors on different subsequent multi-state transitions were identified using a homogeneous Markov model. The combination of both initial mixture distribution and homogeneous Markov exponential regression model makes a significant contribution to reducing heterogeneity across individuals and over time for disease progression. 相似文献
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Drawing on Judith Butler's conception of 'performativity', we would argue that the notion has important implications for contemporary debates in international social welfare over agency, subjection and 'resistance'. Professional social workers embedded in discursive institutions function according to particular expectations around performativity. In addition, this organisational context is complex with multiple demands. In light of technologies of surveillance and control in contemporary social work, performativity offers a response to the pressing need to expand notions of worker opposition beyond traditional forms of organised dissent towards the production of subjective space. 相似文献