Toward a comprehensive ‘quality-of-life’ index

Any attempt to construct an overall measure of the quality-of-life (“QOL”) of a community, population group, or larger society must inevitably confront the critical obstacle posed by the absence of a common numéraire. The diverse elements that significantly affect the “QOL” of individuals and social groups are each subject, at least in principle, to some form of measurement, but no satisfactory method has yet been devised whereby these different measurements could be reduced to a single metric.The construct that is developed in this paper cannot claim to have overcome this fundamental problem; nor does it settle the equally basic difficulties relating to what specific indicators to include in the composite construct, and how to weigh their individual values. However, it illustrates one possible approach toward the development of a summary index value that provides some insight into both direction (“favorable” or “unfavorable”) and magnitude of observed year-to-year changes in a selected number of fairly representative socioeconomic indicators for which measures were available for the United States annually from 1969 to the present. The information provided by this index lacks explanatory power, but examination of the components of the observed changes in the index does yield some useful insight into the relative contribution of changes in different “areas of concern” to the overall changes observed in the “QOL” in the United States during the 1969–1985 period.     

The RSA (Revenu de solidarité active) and back‐to‐work incentives in France

Using an inventory of local and/or non‐statutory transfers (droits connexes) in 13 French towns and cities, the article first measures the gains from returning to work for recipients of national, statutory means‐tested benefits (Revenu minimum d'insertion— RMI, and Allocation parent isolé— API) by type of household before 2009. The reforms of national, statutory benefits carried out during the 2000s, especially those affecting the working tax credit (Prime pour l'emploi— PPE), failed to ensure that the recipients of means‐tested benefits always stood to gain financially from returning to work. The effects of the reforms were offset by the effects of other measures. The article then simulates the effects of the introduction of the Revenu de solidarité active (RSA) in place of the RMI in 2009, and takes into account the way that local and/or non‐statutory transfers are modified by increases in national, statutory transfers. We observe that the RSA eliminates the financial disincentives to returning to work for almost all localities and types of household. The article shows that the marginal tax rate of 38 per cent chosen by the government is very close to the upper limit compatible with a back‐to‐work incentive.     

The Inherently Contested Nature of Nongovernmental Accountability: The Case of HAP International

While the principled case for humanitarian accountability is relatively straightforward, the practice is demonstrably more complicated, necessitating constant negotiation among stakeholders. However, despite the wave of research into nongovernmental accountability, few empirical studies have grappled with the phenomenon’s inherently contested nature. This paper foregrounds tensions arising in the elaboration of nonprofit accountability. Its approach is informed by critical constructivist theory, an international relations approach attuned to social power, identity and exclusion, and conceptual contestation; its conclusions are supported by interview data with key stakeholders. Focusing on the Humanitarian Accountability Partnership (HAP) International, it finds that initial consensus on the desirability of beneficiary (downward) accountability quickly gave way to principled disagreements and operational difficulties. Specifically, the initiation stage of HAP was marked by two conflicts—a debate about enforcement and a turf war over control—culminating in rebranding and relocation. The implementation stage was characterized by tensions over certification and intra-organizational struggles over leadership. The contemporary practice of accountability is shown to be a contingent and contested social process, with humanitarian identity and practice ultimately at stake.

     

Semiparametric estimation in the normal variance-mean mixture model

In this paper we study the problem of statistical inference on the parameters of the semiparametric variance-mean mixtures. This class of mixtures has recently become rather popular in statistical and financial modelling. We design a semiparametric estimation procedure that first estimates the mean of the underlying normal distribution and then recovers non-parametrically the density of the corresponding mixing distribution. We illustrate the performance of our procedure on simulated and real data.     

On the versatility of Little’s Law in operations management: a review and classification using vignettes

Abstract

Despite Little’s Law being considered as one of the ‘laws’ of operations management, evidence of its application in an empirical context is diverse and diffuse. Hence, this paper aims to identify, classify and consolidate published empirical applications of Little’s Law in a systematic manner to better understand its versatility. This paper undertakes a systematic literature review of the databases of the five main publishers of operations management journals and snowball sampling for additional papers. A final sample of 128 empirical journal articles is identified and categorized. Tactical, medium-term decisions relating to capacity dynamics and operations re-engineering are the most popular categories. To give further insights into versatility, vignettes for each category are developed. The review and vignettes confirm Little’s Law as a highly relevant paradigm to operations management decisions due to its empirical versatility across levels, sectors and time domains. The paper suggests four factors to underline the empirical versatility of Little’s Law in operations management: applicability, utility, simplicity and visibility.     

Truck scheduling for solid waste collection in the City of Porto Alegre, Brazil

This paper considers a truck scheduling problem in the context of solid waste collection in the City of Porto Alegre, Brazil. The problem consists of designing “good” daily truck schedules over a set of previously defined collection trips, on which the trucks collect solid waste in fixed routes and empty loads in one of several operational recycling facilities in the system. These facilities are managed by cooperatives whose members are poor and not part of the mainstream economy. The main objective is to minimize the total operating and fixed truck costs. We show that the problem can be modeled as a special case of the single-depot vehicle scheduling problem, which is polynomially solvable. However, due to the social benefits of the solid waste program, it is desirable to obtain balanced assignments of collection trips unloading their cargo at the recycling facilities. We prove that the truck scheduling problem considering balanced unloading is NP-hard. A heuristic approach, incorporating an auction algorithm and a dynamic penalty method, is designed to acquire a good solution. Finally, computational experiments are conducted on real data. The results show that the heuristic approach simultaneously reduces total costs and balances the number of trips assigned to each recycling facility.     

The Working Families’ Tax Credit and Some European Tax Reforms in A Collective Setting

A framework for simplified implementation of the collective model of labor supply decisions is presented in the context of fiscal reforms in the UK. Through its collective form the model accounts for the well known problem of distribution between wallet and purse, a broadly debated issue which has so far been impossible to model due to the limitations of the unitary model of household behavior. A calibrated data set is used to model the effects of introducing two forms of the Working Families’ Tax Credit. We also summarize results of estimations and calibrations obtained using the same methodology on data from five other European countries. The results underline the importance of taking account of the intrahousehold decision process and suggest that who receives government transfers does matter from the point of view of labor supply and welfare of household members. They also highlight the need for more research into models of household behavior.

Collective Models of Labor Supply with Nonconvex Budget Sets and Nonparticipation: A Calibration Approach

We suggest a methodology to calibrate a collective model with household-specific bargaining rules and marriage-specific preferences that incorporate leisure externalities. The empirical identification relies on the assumption that some aspects of individual preferences remain the same after marriage, so that estimation on single individuals can be used. The procedure maps the complete Pareto frontier of each household in the dataset and we define alternative measures of a power index. The latter is then regressed on relevant bargaining factors, including a set of variables retracing the potential relative contributions of the spouses to household disposable income. In its capacity to handle complex budget sets and labor force participation decisions of both spouses, this framework allows the comparison of unitary and collective predictions of labor supply reactions and welfare changes entailed by fiscal reforms in a realistic setting (see Michal Myck et al., 2006; Denis Beninger et al., 2006).