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91.
92.
The publication of Child Protection: Messages from Research (Department of Health, 1995) and of the ‘Supporting Families’ Green Paper (Home Office, 1998) have both highlighted the importance of developing family support services, in keeping with the word and the spirit of the Children Act, 1989. This article presents some of the findings of a three year study of a voluntary organisation, Home‐Start, which offers support to mothers with children under five through volunteer home visiting. The article makes connections between the activities of Home‐Start and the wider debate about family support in the United Kingdom. Copyright © 2000 John Wiley & Sons, Ltd. 相似文献
93.
Joseph G. Ibrahim Stuart R. Lipsitz & Nick Horton 《Journal of the Royal Statistical Society. Series C, Applied statistics》2001,50(3):361-373
We propose a method for estimating parameters in generalized linear models when the outcome variable is missing for some subjects and the missing data mechanism is non-ignorable. We assume throughout that the covariates are fully observed. One possible method for estimating the parameters is maximum likelihood with a non-ignorable missing data model. However, caution must be used when fitting non-ignorable missing data models because certain parameters may be inestimable for some models. Instead of fitting a non-ignorable model, we propose the use of auxiliary information in a likelihood approach to reduce the bias, without having to specify a non-ignorable model. The method is applied to a mental health study. 相似文献
94.
Nick Feltovich 《Econometrica : journal of the Econometric Society》2000,68(3):605-641
This paper examines the abilities of learning models to describe subject behavior in experiments. A new experiment involving multistage asymmetric‐information games is conducted, and the experimental data are compared with the predictions of Nash equilibrium and two types of learning model: a reinforcement‐based model similar to that used by Roth and Erev (1995), and belief‐based models similar to the ‘cautious fictitious play’ of Fudenberg and Levine (1995, 1998) These models make predictions that are qualitatively similar cycling around the Nash equilibrium that is much more apparent than movement toward it. While subject behavior is not adequately described by Nash equilibrium, it is consistent with the qualitative predictions of the learning models. We examine several criteria for quantitatively comparing the predictions of alternative models. According to almost all of these criteria, both types of learning model outperform Nash equilibrium. According to some criteria, the reinforcement‐based model performs better than any version of the belief‐based model; according to others, there exist versions of the belief‐based model that outperform the reinforcement‐based model. The abilities of these models are further tested with respect to the results of other published experiments. The relative performance of the two learning models depends on the experiment, and varies according to which criterion of success is used. Again, both models perform better than equilibrium in most cases. 相似文献
95.
96.
In this paper, two examples of the close relationship between a national social welfare system, and explicit transnational influences are discussed. Both the state socialist and Scandinavian models have a recognized structure independent of the particular countries in which they have been implemented, although they are both associated with a home base, Russia and Sweden respectively. Our examples, Estonia and Finland, faced both common and specific national problems following 1991, which led to rapid change in each country's economic situation and pressure on their respective welfare systems. There were elements of continuity and discontinuity with the main tenets of their respective welfare models, and both structural factors and cultural diffusion will be explored to understand the origin of these changes. The paper could be seen as a case study of welfare changes in the "borderlands" where "old empires meet". The countries were chosen because they are peripheral to what were rival spheres of influence and because they see themselves as having much in common. We also expect changes to occur more rapidly in peripheral areas. 相似文献
97.
Social Indicators Research - Administrative data are widely used to construct indicators of social disadvantage, such as Free School Meals eligibility and Indices of Multiple Deprivation, for... 相似文献
98.
We estimate the cost of droughts by matching rainfall data with individual life satisfaction. Our context is Australia over
the period 2001 to 2004, which included a particularly severe drought. Using fixed-effect models, we find that a drought in
spring has a detrimental effect on life satisfaction equivalent to an annual reduction in income of A$18,000. This effect,
however, is only found for individuals living in rural areas. Using our estimates, we calculate that the predicted doubling
of the frequency of spring droughts will lead to the equivalent loss in life satisfaction of just over 1% of GDP annually.
相似文献
Michael A. ShieldsEmail: |
99.
People are central to system functioning and this role has been dramatically extended by new information technology. This makes possible the fundamental transformation of processes across systems of systems. Can Ergonomics research play an effective role in systems integration innovation? To have real world impact on such problems the system of R and D needs to sustain strong designs that address the functionality of socio-technical systems and support the implementation of innovations, taking into account the complexity of change, the importance of values of dignity and trust, and creating a common understanding amongst all stakeholders to enable design for operations. Strong research designs are more expensive, difficult, risky and prolonged than more commonly practiced weaker designs. They require active engagement with the industrial or service provider and involve overcoming cultural and other barriers to effective implementation and change. To create a virtuous cycle of research-generated impact it is necessary for strong designs to be well supported in the research community and for real world impact to be central to performance criteria of research excellence. Unfortunately neither of these criteria appear to be fulfilled. To ameliorate this, deficiencies in the full cycle of systems integration innovation need to be addressed. 相似文献
100.
Sequential case series analysis for pharmacovigilance 总被引:1,自引:0,他引:1
Mounia N. Hocine Patrick Musonda Nick J. Andrews C. Paddy Farrington 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》2009,172(1):213-236
Summary. The self-controlled case series method is used to evaluate drug safety, particularly the safety of paediatric vaccines with respect to rare adverse reactions. We propose a group sequential version of the method for prospective surveillance of drug safety. We focus on the surveillance of new vaccines. We develop methods that are based on the sequential probability ratio test applied at predetermined surveillance intervals, using both simple and composite alternative hypotheses. We investigate the properties of the methods analytically in a simple setting and by simulations in more realistic scenarios. The methods are applied to data on influenza vaccine and Bell's palsy, and to data on measles, mumps and rubella vaccine and bleeding disorders. 相似文献