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61.
Gilles Guillot Denis Kan-King-Yu Joël Michelin Philippe Huet 《Journal of the Royal Statistical Society. Series C, Applied statistics》2006,55(3):407-430
Summary. In a precision farming context, differentiated management decisions regarding fertilization, application of lime and other cultivation activities may require the subdivision of the field into homogeneous regions with respect to the soil variables of main agronomic significance. The paper develops an approach that is aimed at delineating homogeneous regions on the basis of measurements of a categorical and quantitative nature, namely soil type and resistivity measurements at different soil layers. We propose a Bayesian multivariate spatial model and embed it in a Markov chain Monte Carlo inference scheme. Implementation is discussed using real data from a 15-ha field. Although applied to soil data, this model could be relevant in areas of spatial modelling as diverse as epidemiology, ecology or meteorology. 相似文献
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We investigate how a group of players might cooperate with each other within the setting of a non-cooperative game. We pursue
two notions of partial cooperative equilibria that follow a modification of Nash’s best response rationality rather than a
core-like approach. Partial cooperative Nash equilibrium treats non-cooperative players and the coalition of cooperators symmetrically,
while the notion of partial cooperative leadership equilibrium assumes that the group of cooperators has a first-mover advantage.
We prove existence theorems for both types of equilibria. We look at three well-known applications under partial cooperation.
In a game of voluntary provision of a public good we show that our two new equilibrium notions of partial cooperation coincide.
In a modified Cournot oligopoly, we identify multiple equilibria of each type and show that a non-cooperator may have a higher
payoff than a cooperator. In contrast, under partial cooperation in a symmetric Salop City game, a cooperator enjoys a higher
return. 相似文献
65.
An alternative competing risk model to the Weibull distribution for modelling aging in lifetime data analysis 总被引:2,自引:0,他引:2
A simple competing risk distribution as a possible alternative to the Weibull distribution in lifetime analysis is proposed.
This distribution corresponds to the minimum between exponential and Weibull distributions. Our motivation is to take account
of both accidental and aging failures in lifetime data analysis. First, the main characteristics of this distribution are
presented. Then, the estimation of its parameters are considered through maximum likelihood and Bayesian inference. In particular,
the existence of a unique consistent root of the likelihood equations is proved. Decision tests to choose between an exponential,
Weibull and this competing risk distribution are presented. And this alternative model is compared to the Weibull model from
numerical experiments on both real and simulated data sets, especially in an industrial context. 相似文献
66.
Vachon Maxime Papineau Marie Dupuis Gilles Roberge Pasquale 《Social indicators research》2019,142(3):1193-1210
Social Indicators Research - Burnout has very often been studied from a work-life specific perspective. However, a recent field of research leads to wonder about the impact that life events can... 相似文献
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