Do some authoritarian governments foster physical quality of life?

A recent claim that the populations of populist authoritarian governments have relatively high physical quality of life is tested empirically and found to be true. Analysis of life expectancy in 103 countries shows that although political rights contribute to the prediction of life expectancy, net of GNP per capita, one category of authoritarian governments, here called the constrained authoritarians, has higher than expected physical quality of life. Of interest is the additional finding that location in sub-Saharan Africa has a strong negative impact on life expectancy, net of GNP and political rights.I appreciate the contributions to this paper of Linda Bush, Rebecca Miles Doan, Eugene Erickson, Joe Francis, Donald Freebairn, Victor Nee and Linda Jacobsen.     

Global activism and new media: A study of transnational NGOs’ online public relations

This study examines how transnational nongovernmental organizations make use of new media tools in their public relation activities and what factors influence their online public relations. A survey of communication representatives at 75 transnational NGOs based in the United States found that promoting the organization's image and fund-raising were the two most important functions of new media for the NGOs. Organizational capacity and main objective of the organization were significant predictors of NGOs’ new media use in their public relations. However, organizational efficiency and revenue did not significantly predict NGOs’ use of new media.     

Larger posterior mode wavelet thresholding and applications

This paper explores the thresholding rules induced by a variation of the Bayesian MAP principle. The MAP rules are Bayes actions that maximize the posterior. The proposed rule is thresholding and always picks the mode of the posterior larger in absolute value, thus the name LPM. We demonstrate that the introduced shrinkage performs comparably to several popular shrinkage techniques. The exact risk properties of the thresholding rule are explored, as well. We provide extensive simulational analysis and apply the proposed methodology to real-life experimental data coming from the field of atomic force microscopy.     

Parametric fractional imputation for nonignorable missing data

Parameter estimation with missing data is a frequently encountered problem in statistics. Imputation is often used to facilitate the parameter estimation by simply applying the complete-sample estimators to the imputed dataset.In this article, we consider the problem of parameter estimation with nonignorable missing data using the approach of parametric fractional imputation proposed by Kim (2011). Using the fractional weights, the E-step of the EM algorithm can be approximated by the weighted mean of the imputed data likelihood where the fractional weights are computed from the current value of the parameter estimates. Calibration fractional imputation is also considered as a way for improving the Monte Carlo approximation in the fractional imputation. Variance estimation is also discussed. Results from two simulation studies are presented to compare the proposed method with the existing methods. A real data example from the Korea Labor and Income Panel Survey (KLIPS) is also presented.     

Comparison of three-dimensional profiles over time

In this paper, we describe an analysis for data collected on a three-dimensional spatial lattice with treatments applied at the horizontal lattice points. Spatial correlation is accounted for using a conditional autoregressive model. Observations are defined as neighbours only if they are at the same depth. This allows the corresponding variance components to vary by depth. We use the Markov chain Monte Carlo method with block updating, together with Krylov subspace methods, for efficient estimation of the model. The method is applicable to both regular and irregular horizontal lattices and hence to data collected at any set of horizontal sites for a set of depths or heights, for example, water column or soil profile data. The model for the three-dimensional data is applied to agricultural trial data for five separate days taken roughly six months apart in order to determine possible relationships over time. The purpose of the trial is to determine a form of cropping that leads to less moist soils in the root zone and beyond. We estimate moisture for each date, depth and treatment accounting for spatial correlation and determine relationships of these and other parameters over time.     

Weight loss and related behavior changes among lesbians

Overweight and obesity are known risk factors for several modifiable, if not preventable diseases. Growing evidence suggests that lesbians may have higher rates of obesity than other women. This study was designed to describe weight loss and behavior changes related to food choices and exercise habits among lesbians who participated in a predominantly lesbian, mainstream, commercial weight loss program. Behavioral changes were recorded in exercise, quality of food choices, and number of times dining out. Although there were several limitations based on sample size and heterogeneity, the impact of a lesbian-supportive environment for behavior change was upheld.