Hierarchical disjoint principal component analysis

AStA Advances in Statistical Analysis - Dimension reduction, by means of Principal Component Analysis (PCA), is often employed to obtain a reduced set of components preserving the largest possible...     

Urban poverty and labor market dynamics in five Latin American countries: 2003–2008

Latin America experienced a long period of sustained growth since 2003 that positively impacted social and labor market indicators, including poverty. This paper contributes to the understanding of this process as it carries out a comparative study of poverty dynamics in five Latin American countries during 2003–2008. It analyzes the extent to which countries with different levels of poverty incidence diverge in terms of poverty exit and entry rates, identifies the relative importance of the frequency and impact of events associated to poverty transitions and examines how these events affect households with different characteristics. For this, a dynamic analysis of panel data is carried out using regular household surveys. Sizeable rates of poverty movements were observed in all five countries and it was found that a large proportion of household experienced positive events, mainly related to the labor market; however, only a small fraction of them actually exited poverty. Demographic events and public cash transfers proved to be of little relevance; in particular, the latter did not contribute much either to intensify poverty exits or to prevent poverty entries. Households with children experienced more (less) negative (positive) events than those without children. It appeared therefore that even when the economy behaved reasonably well at the aggregate level, high levels of labor turnover and income mobility (even of a negative nature) still prevail, mainly associated to the high level of precariousness and the undeveloped system of social protection that characterize the studied countries.     

Correction to: Joint and conditional dependence modelling of peak district heating demand and outdoor temperature: a copula-based approach

Statistical Methods & Applications - This paper examines the complex dependence between peak district heating demand and outdoor temperature. Our aim is to provide the probability law of heat...     

Trade Unions,Wage Bargaining Coordination,and Foreign Direct Investment

Conventional wisdom is that a high trade union bargaining strength and a system of coordinated wage bargaining reduce the attractiveness of an economy as a location for foreign direct investment, although there is limited evidence for this. The paper takes panel data for 19 OECD economies to examine the relationship between trade union bargaining strength, bargaining coordi nation, and a range of incentives for inward foreign direct investment. It finds a strong negative effect of trade union density on inward foreign direct investment, which is dependent on the degree of wage bargaining coordination. A high degree of coordination weakens the deterrent effect of high union density, which is consistent with the notion that under certain circumstances a coordinated increase in wages can increase profits of the multinationals by hurting domestic firms.     

Labour market turnover in Latin America: How intensive is it and to what extent does it differ across countries?

The study of labour market turnover is particularly significant in Latin America, which is characterized by marked economic cycles and limited social protection coverage. This article estimates the intensity of transitions from employment in six countries in Latin America in the new millennium and decomposes the differences observed, furthermore evaluating the employment destinations of workers making such transitions. The countries under analysis show very different turnover rates, which are mostly explained by a dissimilar incidence of informal and temporary employment. In all cases, a large share of job exits imply transitions to precarious jobs or unemployment.     

Soziologische Theorie, Methoden, Migrationssoziologie, Arbeitssoziologie, Wirtschaftssoziologie, Mitbestimmung, Umweltsoziologie

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Soziologische Theorie, Methoden, Migrationssoziologie, Arbeitssoziologie, Wirtschaftssoziologie, Mitbestimmung, Umweltsoziologie     

Early inference on reliability of upgraded automotive components by using past data and technical information

When a new product is the result of design and/or process improvements introduced in its predecessors, then the past failure data and the expert technical knowledge constitute a valuable source of information that can lead to a more accurate reliability estimate of the upgraded product. This paper proposes a Bayesian procedure to formalize the prior information available about the failure probability of an upgraded automotive component. The elicitation process makes use of the failure data of the past product, the designer information on the effectiveness of planned design/process modifications, information on actual working conditions of the upgraded component and, for outsourced components, technical knowledge on the effect of possible cost reductions. By using the proposed procedure, more accurate estimates of the failure probability can arise. The number of failed items in a future population of vehicles is also predicted to measure the effect of a possible extension of the warranty period. Finally, the proposed procedure was applied to a case study and its feasibility in supporting reliability estimation is illustrated.