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71.
Despite not being grounded in the classic nation-building dynamic of citizenship identified by T.H.Marshall, EU citizenship offers social rights and welfare protection to non-nationals on a principle of non-discrimination. We narrate a creeping process of retrenchment by which European member states have used policy strategies to undermine this principle, by transforming the unique idea of free movement of persons in the EU to just another form of “immigration” which can be subject to selectivity and exclusion. As Europe’s multiple recent crises have unfolded, political resources were found to effect this transformation tangibly via reshaping access to welfare for EU citizens. Focusing on the cases of the UK and Germany, we discuss how, despite their distinctive welfare regimes and labour market systems, these two countries have led the way toward a dismantling of non-discrimination for EU citizens and effectively the end of the anomalous ‘post-national’ dimension of European citizenship. 相似文献
72.
Randomised controlled trials are considered the gold standard in trial design. However, phase II oncology trials with a binary outcome are often single-arm. Although a number of reasons exist for choosing a single-arm trial, the primary reason is that single-arm designs require fewer participants than their randomised equivalents. Therefore, the development of novel methodology that makes randomised designs more efficient is of value to the trials community. This article introduces a randomised two-arm binary outcome trial design that includes stochastic curtailment (SC), allowing for the possibility of stopping a trial before the final conclusions are known with certainty. In addition to SC, the proposed design involves the use of a randomised block design, which allows investigators to control the number of interim analyses. This approach is compared with existing designs that also use early stopping, through the use of a loss function comprised of a weighted sum of design characteristics. Comparisons are also made using an example from a real trial. The comparisons show that for many possible loss functions, the proposed design is superior to existing designs. Further, the proposed design may be more practical, by allowing a flexible number of interim analyses. One existing design produces superior design realisations when the anticipated response rate is low. However, when using this design, the probability of rejecting the null hypothesis is sensitive to misspecification of the null response rate. Therefore, when considering randomised designs in phase II, we recommend the proposed approach be preferred over other sequential designs. 相似文献
73.
Ge Yu Adrian Renton Martin Wall Emee Estacio Justine Cawley Pratibha Datta 《Social indicators research》2011,104(2):311-322
Achieving adequate levels of physical activity (PA) is important to maintain health and prevent chronic disease. The costs of inadequate physical activity to the NHS have been estimated at over a billion pounds annually. While socio-demographic characteristics such as age, sex and ethnicity have been reported to be associated with different levels of PA, there is evidence that people??s social environments may also be important in encouraging a physically active lifestyle. The objective of this paper is to describe associations between the social environment and physical activity among the poorer communities in an outer London Borough, when other socio-demographic factors are controlled for. A household survey was carried out in six poorer neighbourhoods in Redbridge in 2008 as part of a wider health needs assessment. The questionnaire included questions allowing estimation of levels of physical activity as well as extent of social environment [social network score (SNS) and social support score (SSS)]. A random sample of households was taken and a total of 799 completed responses from over 16 year old were obtained. The association between physical activity and the social environment controlling for socio-demographic characteristics was estimated using a logistic nested model. Higher SNS was significantly associated with younger age, Black ethnicity, higher education level, higher household income and higher levels of PA in bivariate analyses. Higher SSS was positively associated with Indian ethnicity, higher household income and area of residence. In multivariate analyses higher levels of PA were significantly associated with wider social networks and stronger social support, educational level and marital status. Despite its limitations, our findings confirm that the relationship between low physical activity and weak social networks and low social support, observed in general population studies, also occurs in deprived communities in London. The relationship merits further exploration given the limited evidence on the effectiveness of interventions to promote physical activity. 相似文献
74.
75.
Adrian Baddeley 《Australian & New Zealand Journal of Statistics》2011,53(3):365-387
In survey sampling and in stereology, it is often desirable to estimate the ratio of means θ= E(Y)/E(X) from bivariate count data (X, Y) with unknown joint distribution. We review methods that are available for this problem, with particular reference to stereological applications. We also develop new methods based on explicit statistical models for the data, and associated model diagnostics. The methods are tested on a stereological dataset. For point‐count data, binomial regression and bivariate binomial models are generally adequate. Intercept‐count data are often overdispersed relative to Poisson regression models, but adequately fitted by negative binomial regression. 相似文献
76.
Income support for carers has been available in Australia since the early 1980s. In contrast to most other forms of income support, eligibility for Carer Payment has been progressively expanded in recent years, and increasing numbers of carers are claiming the payment as a result. This article examines the history of income support for carers by reviewing changes in eligibility criteria in the social security legislation and considering how those changes were framed. We argue that reforms to carers' income support have developed within competing frames of social justice and social investment, with an increasing emphasis on a social investment discourse, which prioritises paid work over care. Neither of the dominant frames addresses gender equality, and in practice, income support policy has reinforced familial (women's) responsibility for caring. Given the gendered nature of caring in Australia, gender equality issues must be considered in future policy reforms to ensure that the competing pressures on women to care and to engage in paid work do not lead to greater disadvantage and inequality for women and the people for whom they care. 相似文献
77.
Kernel smoothing of spatial point data can often be improved using an adaptive, spatially varying bandwidth instead of a fixed bandwidth. However, computation with a varying bandwidth is much more demanding, especially when edge correction and bandwidth selection are involved. This paper proposes several new computational methods for adaptive kernel estimation from spatial point pattern data. A key idea is that a variable-bandwidth kernel estimator for d-dimensional spatial data can be represented as a slice of a fixed-bandwidth kernel estimator in \((d+1)\)-dimensional scale space, enabling fast computation using Fourier transforms. Edge correction factors have a similar representation. Different values of global bandwidth correspond to different slices of the scale space, so that bandwidth selection is greatly accelerated. Potential applications include estimation of multivariate probability density and spatial or spatiotemporal point process intensity, relative risk, and regression functions. The new methods perform well in simulations and in two real applications concerning the spatial epidemiology of primary biliary cirrhosis and the alarm calls of capuchin monkeys. 相似文献
78.
Ariel Shensa Jaime E. Sidani César G. Escobar-Viera Kar-Hai Chu Nicholas D. Bowman Jennifer M. Knight 《Journal of American college health : J of ACH》2013,61(8):747-753
ABSTRACTObjective: To examine the association between degree of real-life closeness of social media (SM) contacts and depressive symptoms. Participants: Students ages 18–30 (N = 1124) were recruited in August 2016. Methods: Participants completed an online survey assessing SM use and depression. We used multivariable logistic regression to assess associations between real-life closeness of SM contacts and depressive symptoms. Results: After controlling for covariates, each 10% increase in the proportion of SM friends with whom participants had no face-to-face relationship was associated with a 9% increase in odds of depressive symptoms (AOR = 1.09; 95% CI = 1.05–1.13). However, each 10% increase in the proportion of SM friends with whom participants had a close face-to-face relationship was associated with a 7% decrease in depressive symptoms (AOR = 0.93; 95% CI = 0.89–0.97). Conclusions: Having no in-person relationship with SM contacts is associated with increased depressive symptoms; however, having close in-person relationships with SM contacts is associated with decreased depressive symptoms. 相似文献
79.
80.
Raphael Travis Jr. Scott Wm. Bowman 《Journal Of Human Behavior In The Social Environment》2013,23(6):654-678
The purpose of this study was to report on the development and construction of the Individual and Community Empowerment (ICE) inventory, a measure seeking to capture the specific pathways by which either risk-enhancing impacts or empowering impacts of rap music manifest. Data were analyzed via structural equation modeling from a convenience sample of 128 high school and college students. Results found that respondents elicited (1) empowering themes that related to them individually and to the broader community and (2) high-risk themes that may promote risky health behaviors. Implications about research and practice relevance of the ICE inventory are discussed. 相似文献