Erratum to “Progressively Type-II right censored order statistics from discrete distributions” [J. Statist. Plann. Inference 138 (2008) 845–856]

In this note, we correct the proof of Representation 1 of Balakrishnan and Dembińska [2008. Progressively Type-II right censored order statistics from discrete distributions. J. Statist. Plann. Inference 138, 845–856] which relates the joint distribution of progressively Type-II right censored order statistics corresponding to an arbitrary population to progressively Type-II right censored order statistics from the standard uniform distribution.     

On the impact of contaminations in graphical Gaussian models

This paper analyzes the impact of some kinds of contaminant on model selection in graphical Gaussian models. We investigate four different kinds of contaminants, in order to consider the effect of gross errors, model deviations, and model misspecification. The aim of the work is to assess against which kinds of contaminant a model selection procedure for graphical Gaussian models has a more robust behavior. The analysis is based on simulated data. The simulation study shows that relatively few contaminated observations in even just one of the variables can have a significant impact on correct model selection, especially when the contaminated variable is a node in a separating set of the graph.     

Service and Life Quality: The Case of Palermo

The research aims at analysing the ``quality' of some services offered to the citizens by the Commune of Palermo. The data available were gathered thanks to a sampling survey carried out in October 1997. The sample is made up of 1008 residents in the city of Palermo and is proportionally stratified according to the quarter of residence. Information was gathered by means of a telephone questionnaire. The answering rate was rather high and a great interest in the subjects dealt was taken.The research wants to individuate the degree of efficiency of the Commune of Palermo, also at administrative level, with some questions concerning the municipal council, taking the expectations of the citizens of the city into account through an analytic survey of the indicators measuring the judgement of the citizen towards the main services. This result will be the starting point of an exhaustive analysis aiming at the individuation of the ``quality of life' in Palermo, which is tightly connected with the services offered.     

The econometric modelling of social preferences

Experimental data on social preferences present a number of features that need to be incorporated in econometric modelling. We explore a variety of econometric modelling approaches to the analysis of such data. The approaches under consideration are: the Random Utility approach (in which it is assumed that each possible action yields a utility with a deterministic and a stochastic component, and that the individual selects the action yielding the highest utility); the Random Behavioural approach (which assumes that the individual computes the maximum of a deterministic utility function, and that computational error causes their observed behaviour to depart stochastically from this optimum); and the Random Preference approach (in which all variation in behaviour is attributed to stochastic variation in the parameters of the deterministic component of utility). These approaches are applied in various ways to an experiment on fairness conducted by Cappelen et al. (Am Econ Rev 97(3):818–827, 2007). Various models that we estimate succeed in capturing the key features of the dataset. Conclusions concerning fairness-related behaviour depend crucially on the choice of econometric model.     

Black African Children and the Child Protection System

This paper explores black African children’s experiencesof the child protection system in the UK. The central focusof the paper is a review of the available literature on thesocial circumstances and environmental influences affectingmany black African families involved in the child protectionsystem; specific parenting practices and care-giving environments;and their experiences of social work and other professionalinterventions aimed at safeguarding and promoting the needsof African children. This paper examines these themes to elucidatethe factors that contribute to the provision of effective, culturallycompetent interventions with black African children at riskof significant harm. It suggests that there are a number oftensions inherent for professionals in working with culturallydiverse African families such as reconciling different beliefsand behaviours concerning child-rearing practices; affirmingthe parenting practices of these families in the engagementprocess; adopting a strengths-based orientation whilst at thesame time safeguarding and promoting the welfare of vulnerablechildren. The paper concludes with a discussion of the implicationsfor practice.     

Do Trade Union Leaders Violate Subjective Expected Utility? Some Insights From Experimental Data

This paper presents the results of two experiments designed to test violations of Subjective Expected Utility Theory (SEUT) within a sample of Italian trade union delegates and leaders. Subjects priced risky and ambiguous prospects in the domain of gains. Risky prospects were based on games of chance, while ambiguous prospects were built on the standard Ellsberg paradox and on event lotteries whose outcomes were based either on the results of a fictional election or on the future results of the 1999 European Parliamentary election in Italy and the U.K. The experiments show that, although risky prospects were priced at their expected values on average, trade union delegates and leaders did violate SEUT when assessing ambiguous prospects. Moreover, their behaviour depended on the source of uncertainty (Ellsberg paradox vs. electoral results; fictional vs. real election; Italy vs. U.K. election outcomes). We discuss the implications of these results for the economic theory of the trade union.     

Living in a small,crowded room: Scenarios for the future of Mauritius

In this article, future scenarios for Mauritius are described with a special focus on the interaction of different factors which can limit or hinder growth. Mauritius is a small, densely populated island where natural and human resource limits are obvious. The scenarios describe current trends on Mauritius well. They give a finetuned feeling for the differential impacts of labor, land, water, and pollution absorption capacity. They show that at various points in the course of development different limiting factors function, and thus it is necessary to give attention to all major factors of production and limitation in one holistic setting.