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101.
Roland Langrock Nils-Bastian Heidenreich Stefan Sperlich 《Statistical Methods and Applications》2014,23(3):435-449
Conventional, parametric multinomial logit models are in general not sufficient for capturing the complex structures of electorates. In this paper, we use a semiparametric multinomial logit model to give an analysis of party preferences along individuals’ characteristics using a sample of the German electorate in 2006. Germany is a particularly strong case for more flexible nonparametric approaches in this context, since due to the reunification and the preceding different political histories the composition of the electorate is very complex and nuanced. Our analysis reveals strong interactions of the covariates age and income, and highly nonlinear shapes of the factor impacts for each party’s likelihood to be supported. Notably, we develop and provide a smoothed likelihood estimator for semiparametric multinomial logit models, which can be applied also in other application fields, such as, e.g., marketing. 相似文献
102.
Roland Günther 《Statistics》2013,47(4):535-550
In the paper we consider some adaptive procedures for estimating the unknown parameters of autoregressive and moving average processes. In case of AK(p) and MA(1) processes sequences of estimators converging with probability one and In mean square are given 相似文献
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Roland G. Meinert 《Journal of Social Work Education》2013,49(3):50-59
After discussing the rationale and procedures by which a course in human sexuality was introduced the authors discuss some of the critical issues that developed during the teaching of the material. It was found that desensitizing became a major factor in integration of course content, and that graduate students needed time to discuss their own feelings about sexual issues. During the several times this course was taught, it became increasingly evident that students often diagnosed pathology based on their own attitudes toward specific sexual activities, and had to learn to use other criteria for more objective assessments. 相似文献
107.
This study assesses the prevalence and correlates of interpersonal violence victimization in a cohort of 493 male and 220 female junior Navy personnel who participated in a cross-sectional follow-up study on health-related behaviors. Survey data were obtained during 2000 about past-year prevalence of physical violence and sexual victimization. Chi-square tests of independence and multivariable logistic regression analyses were employed to estimate prevalence rates and to assess correlates of interpersonal violence. No gender differences were found for rates of violence victimization (16.4%) or sexual victimization (4.5%). Significant correlates of interpersonal violence victimization among males were depression and tobacco use; among females, significant correlates were depression and frequent heavy drinking. Findings suggest that large numbers of young enlisted adults serving in the military may be victims of interpersonal violence. 相似文献
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Radboud J. Duintjer Tebbens Mark A. Pallansch Konstantin M. Chumakov Neal A. Halsey Tapani Hovi Philip D. Minor John F. Modlin Peter A. Patriarca Roland W. Sutter Peter F. Wright Steven G.F. Wassilak Stephen L. Cochi Jong‐Hoon Kim Kimberly M. Thompson 《Risk analysis》2013,33(4):606-646
With the intensifying global efforts to eradicate wild polioviruses, policymakers face complex decisions related to achieving eradication and managing posteradication risks. These decisions and the expanding use of inactivated poliovirus vaccine (IPV) trigger renewed interest in poliovirus immunity, particularly the role of mucosal immunity in the transmission of polioviruses. Sustained high population immunity to poliovirus transmission represents a key prerequisite to eradication, but poliovirus immunity and transmission remain poorly understood despite decades of studies. In April 2010, the U.S. Centers for Disease Control and Prevention convened an international group of experts on poliovirus immunology and virology to review the literature relevant for modeling poliovirus transmission, develop a consensus about related uncertainties, and identify research needs. This article synthesizes the quantitative assessments and research needs identified during the process. Limitations in the evidence from oral poliovirus vaccine (OPV) challenge studies and other relevant data led to differences in expert assessments, indicating the need for additional data, particularly in several priority areas for research: (1) the ability of IPV‐induced immunity to prevent or reduce excretion and affect transmission, (2) the impact of waning immunity on the probability and extent of poliovirus excretion, (3) the relationship between the concentration of poliovirus excreted and infectiousness to others in different settings, and (4) the relative role of fecal‐oral versus oropharyngeal transmission. This assessment of current knowledge supports the immediate conduct of additional studies to address the gaps. 相似文献
110.
Roland W. B. Blonk Veerle Brenninkmeijer Suzanne E. Lagerveld Irene L. D. Houtman 《Work and stress》2013,27(2):129-144
Abstract We investigated the effectiveness of cognitive behavioural therapy (CBT) and a combined intervention of workplace- and individual-focused techniques among self-employed people on sick leave owing to work-related psychological complaints (such as anxiety, depression, and burnout). Both interventions were based on CBT; however, one was conducted by psychotherapists and involved extensive CBT, while the other was delivered by “labour experts” and consisted of a brief CBT-derived intervention combined with both individual-focused and workplace interventions. One hundred and twenty-two self-employed people who had applied for sickness benefit from an insurance company enrolled in a randomized controlled design. These individuals were assessed before the intervention and then at 4 months and 10 months after the onset of the intervention. The outcome was assessed based on duration of sick leave until partial and full return to work and on psychological complaints. Significant effects on partial and full return were found in favour of the combined intervention: partial return occurred 17 and 30 days earlier in this group than in the CBT group and the control group, respectively. For full return to work, the difference was approximately 200 days. A decrease in psychological complaints was present in each condition but we found no significant interaction effects. The results suggest that work resumption should be addressed earlier in individuals receiving CBT. This insight is of value for the (scarce) literature concerning interventions for individuals who are on sick leave owing to work-related psychological complaints. 相似文献