An Empirical Test of Competing Theories of Hazard-Related Trust: The Case of GM Food

Few scholars doubt the importance of trust in explaining variation in public perception of technological risk. Relatively little, however, is known about the particular types of judgments that people use in granting or withholding trust. This article presents findings from an empirical study that explores several dimensions of trust relevant for citizens' judgments of scientists involved in the development of GM food. The relationship between particular dimensions of trust and perceptions of GM food risk is also explored, using structural equation modeling. Results suggest that trust judgments based on the perception of shared values are most important in relation to GM food risk, but that judgments about scientists' technical competence are also important.     

Recursive location and scale estimators

It is shown that a recursive estimator with the same asymptotic properties as the median has convergence properties in finite samples which depend heavily on the scale of the data. A simple modification which adjusts for the scale is suggested and its application illustrated on simulated data. The modified estimator has much improved properties which are similar to those of the sample (non-recursive) median.     

地方政府制度创新中的偏差行为分析

地方政府制度创新在有效的推动经济发展的同时也阻碍了改革的进一步深化,与社会发展的目标出现了偏差.本文论述了地方政府作为创新主体地位的形成及在实践中存在的偏差行为,并进行了规范偏差行为的路径分析.     

试析广告标题中谚语的变异

标题是广告的主题和灵魂。广告学者在活的标题语言实践中,有时会有意识地违反谚语内部的语言规律,故意偏离常规而选择特殊性的表达方式,变异谚语。本文试图从现代俄罗斯报纸广告的最新资料去分析、探讨俄罗斯广告作品创意者是如何巧妙地使用俄罗斯谚语作为广告标题的。     

Optimal choice of sample fraction in univariate financial tail index estimation

This study introduces a technique to estimate the Pareto distribution of the stock exchange index by using the maximum-likelihood Hill estimator. Recursive procedures based on the goodness-of-fit statistics are used to determine the optimal threshold fraction of extreme values to be included in tail estimation. These procedures are applied to three indices in the Malaysian stock market which included the consideration of a drastic economic event such as the Asian financial crisis. The empirical results evidenced alternating varying behavior of heavy-tailed distributions in the regimes for both upper and lower tails.     

Structural equation models for area health outcomes with model selection

Recent analyses seeking to explain variation in area health outcomes often consider the impact on them of latent measures (i.e. unobserved constructs) of population health risk. The latter are typically obtained by forms of multivariate analysis, with a small set of latent constructs derived from a collection of observed indicators, and a few recent area studies take such constructs to be spatially structured rather than independent over areas. A confirmatory approach is often applicable to the model linking indicators to constructs, based on substantive knowledge of relevant risks for particular diseases or outcomes. In this paper, population constructs relevant to a particular set of health outcomes are derived using an integrated model containing all the manifest variables, namely health outcome variables, as well as indicator variables underlying the latent constructs. A further feature of the approach is the use of variable selection techniques to select significant loadings and factors (especially in terms of effects of constructs on health outcomes), so ensuring parsimonious models are selected. A case study considers suicide mortality and self-harm contrasts in the East of England in relation to three latent constructs: deprivation, fragmentation and urbanicity.     

On the distribution of some test statistics connected with the multivariate linear functional relationship model

An alternate representation of the densities of some test statistics for the structural coefficients of the multivariate linear functional relationship model is proposed in this article. These statistics are distributed as the ratio of a linear combination of chi-square variÂtes over the root of a product of chi-square variÂtes. A computable representation of their densities has already been derived by Provost (1984) with the help of the technique of the inverse Mellin transform. The connection of the alternate representation to the densities of products of independent beta type-2 and of independent F-random variables is also discussed.     

论元散曲中屈原评价的文化意义

元人对屈原基本上都是持一种嘲讽的态度。这种价值评判的形成 ,与元人的生存环境有着非常直接的关系。价值向度的变形来自于生存环境的险恶。同时 ,与历史上对屈原的消极评价也不无关联     

一类接续性拷贝式及其相关格式的语用考察

一类接续性拷贝式"A是A,B是B"格式(以下简称"是"格式)是一类评价性很强的固定格式,其基本格式义在世界很多语言中都存在,而汉语中的"是"格式,除了基本格式义以外,还能在更大的语篇中发生格式的语义偏移.根据该格式突出的语义色彩,可将其分为中性"是"格式(基本格式)和褒义"是"格式(偏移后的格式)两类,后者是前者在一定语境下发生语义偏移后得到的汉语特有的语义类型.