Finding Closest Targets in Non-Oriented DEA Models: The Case of Convex and Non-Convex Technologies

This paper draws attention for the fact that traditional Data Envelopment Analysis (DEA) models do not provide the closest possible targets (or peers) to inefficient units, and presents a procedure to obtain such targets.It focuses on non-oriented efficiency measures (which assume that production units are able to control, and thus change, inputs and outputs simultaneously) both measured in relation to a Free Disposal Hull (FDH) technology and in relation to a convex technology. The approaches developed for finding close targets are applied to a sample of Portuguese bank branches.     

Technical Efficiency of the Brazilian Municipalities: Correcting Nonparametric Frontier Measurements for Outliers

In this paper we estimate the DEA technical efficiency for 4796 Brazilian municipalities, by applying a recently proposed “Jackstrap” method, which combines Bootstrap and Jackknife resampling techniques, to reduce the effect of outliers and possible errors in the data set. We perform calculations to identify and eliminate high leverage municipalities, using different variants of Data Envelopment Analysis (DEA), as well as Free Disposal Hull (FDH). Corroborating previous results, efficiency results for the Brazilian municipalities show a clear relationship between the size of the municipality and its efficiency scores. Indeed, under both DEA variants, smaller cities tend to be less efficient than larger ones hence indicating that the quality of the frontier adjustment improves significantly as the size of the municipality increases. We present arguments that may explain to some extent these findings, such as economies of scale and the excess spending due to revenue from royalties. However, such effects require further, more careful examination.     

Diferencias salariales en una ocupación mayoritariamente femenina. El trabajo doméstico informal y flexible en Portugal

Se investigan los efectos de las modalidades contractuales informales y flexibles sobre los salarios de los trabajadores domésticos contratados por empleadores privados en Portugal, a partir de una muestra de datos transversales originales. Las estimaciones MCO indican que la formalidad beneficia a los trabajadores tanto en contratos estables como flexibles. Los procesos sociales y del mercado de trabajo tienden a perpetuar la desigualdad, principalmente en detrimento de los trabajadores migrantes. Aunque las competencias están infravaloradas y mal retribuidas, los trabajadores eventuales que prestan servicio a múltiples empleadores o cuidan de los ancianos perciben salarios más altos y, aun así, están sujetos a explotación e inseguridad.     

Clustering of Territorial Areas: A Multi-Criteria Districting Problem

Journal of Quantitative Economics - This paper aims to propose a framework for obtaining homogenous territorial clusters based on a max-p-regions optimisation problem, considering multiple criteria...     

Malmquist Indexes Using a Geometric Distance Function (GDF). Application to a Sample of Portuguese Bank Branches

Traditional approaches to calculate total factor productivity (TFP) change through Malmquist indexes rely on distance functions. In this paper we show that the use of distance functions as a means to calculate TFP change may introduce some bias in the analysis, and therefore we propose a procedure that calculates TFP change through observed values only. Our total TFP change is then decomposed into efficiency change, technological change, and a residual effect. This decomposition makes use of a non-oriented measure in order to avoid problems associated with the traditional use of radial oriented measures, especially when variable returns to scale technologies are to be compared. The proposed approach is applied in this paper to a sample of Portuguese bank branches.     

Emerging Powers in WTO Negotiations: The Domestic Sources of Trade Policy Preferences

In the current round of multilateral trade liberalization, emerging powers such as Brazil and India created the G-20 coalition and refused to accept further tariff rate reductions for industrial products before the United States and the European Union made reciprocal concessions in agriculture. This article examines how and why Brazil and India have taken a more offensive and proactive position at the World Trade Organization (WTO). Following Putnam's two-level games approach, I focus on domestic factors and specifically on interest groups to explain actors' policy preferences in WTO negotiations. From a theoretical perspective, the case studies Brazil and India lend credit to the literature discussing the impact of powerful, sector-specific interest groups on governments' trade policy preferences. From an empirical perspective, the findings show how these two countries translated these demands into government positions and influenced WTO outcomes as agenda-setters and coalition builders.     

Stress at the top: myth or fact? Causal explanations from a fuzzy-set qualitative comparative analysis (fsQCA)

Stress and its associated health issues are a serious concern, because they not only affect employees but also organizations through related costs. The common perception is that being at the top of a hierarchy is associated with higher levels of stress because of the increased responsibilities, challenges, and demands. The present study examines this perception by applying a fuzzy-set qualitative comparative analysis. The study investigates how the top position, authority, number of subordinates, workload, and a sense of control, alone or in combination, lead to stress or its absence. The results show that there are several recipes for stress and that being (or not being) in the top position is neither a sufficient nor a necessary condition for stress (or absence of stress). One of the recipes, however, indicates that being in the top position might be conducive to stress. This finding shows that the position an individual has in the hierarchy does not determine stress. The present study also shows that the absence of a sense of control is almost always a necessary condition for predicting stress and is present in all recipes for the absence of stress. The results can inform managers about the conditions that cause stress and enable managers to think about solutions that can lead to good mental health in their organizations.     

Corporate Legal Responsibility: A Levinasian Perspective

In this article I will look into Corporate Legal Responsibility taking into account Levinas’s notion of infinite responsibility, as well as his understanding of ethical language. My account of Levinas’s philosophy will show that it challenges – breaking down – deeply entrenched distinctions in the dominant strands of moral philosophy, within which the theory of individual responsibility is embedded, such as between:(1) duty to others on the one hand and supererogation on the other; (2) perfect duty to others on the one hand and imperfect duties to others on the other; (3) insiders and outsiders; kith and kin on the one hand and strangers on the other; Levinas’s moral vision is an inclusive one which embraces all of humanity (at least of those present today) irrespective of historical, linguistic, cultural differences and diversities. In other words, each has responsibilities for and duties towards all others. Of course, one might say that there is nothing new about a universalising ethics – after all Kantianism, liberalism as well as utilitarianism are well known instances. However, more crucially, all these traditional moral philosophies uphold the theory of individual responsibility, which is rooted in the philosophy of individualism. Such a philosophy can make sense only of the concept of individual moral/legal agency but not corporate agency. Therefore, in this article I will attempt to show that the Levinasian vision is able to help us change our view with respect to corporate responsibility.     

The Domestic Sources of Multilateral Trade Negotiations: Explaining Brazil's Negotiating Position in the Doha Round

This article investigates the effects of a transfer between two countries participating in a customs union. This analysis yields very paradoxical results which differ from the conclusions obtained by the traditional literature which has been developed in a two-country framework or in a multilateral world but with universal free trade. The compensation scheme adopted by the authorities of the customs union may create an overall terms of trade deterioration and induce an impoverishment for both member countries. Thus, transfers may not be an adequate instrument to redistribute the gains of economic integration between the members of a free trade association.     

The effects of households’ and firms’ borrowing constraints on economic growth

This paper considers an endogenous growth model with asymmetric information between lenders and borrowers, that leads to credit-rationing a proportion of borrowers. However, in contrast to the existing literature, in this model, both firms and consumers face borrowing constraints. Nonetheless, the borrowing constraints facing a firm and those encountered by a consumer have opposing effects on growth. Relaxing borrowing constraints on firms is growth-promoting, as more funds become available for productive investment. In contrast, relaxing borrowing constraints facing consumers has a detrimental effect, as funds are diverted from productive investment to consumption. Such an adverse effect may offset the externality effect present in the production function that would otherwise ensure perpetual growth. Furthermore, it is shown that the interaction between households’ and firms’ borrowing constraints may give rise to endogenous cycles.