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.     

Using Elasticities to Derive Optimal Income Tax Rates

This paper derives optimal income tax formulas using compensated and uncompensated elasticities of earnings with respect to tax rates. A simple formula for the high income optimal tax rate is obtained as a function of these elasticities and the thickness of the top tail of the income distribution. In the general non-linear income tax problem, this method using elasticities shows precisely how the different economic effects come into play and which are the key relevant parameters in the optimal income tax formulas of Mirrlees. The optimal non-linear tax rate formulas are expressed in terms of elasticities and the shape of the income distribution. These formulas are implemented numerically using empirical earning distributions and a range of realistic elasticity parameters.     

The uneasy alliance of organisational culture and equal opportunities for ethnic minority groups: A British example

Recent statistics suggest that there is a continuing disparity in labour market outcomes between ethnic minority (EM) groups and their White counterparts. However, although there is now an abundance of statistical and anecdotal evidence that speaks to the disadvantage of EM groups, there is less understanding of the intraorganisational dynamics that give rise to the outcomes that are reported. Drawing on postcolonial, cultural capital, and social capital theories, this article argues that the dominant approach through which organisational culture is conceptualised and the ways in which it is commonly managed may encourage labour market inequality and disadvantage for EM groups (defined as access to employment and having opportunities for promotion while in employment). The article explores three intraorganisational interventions that are common in culture management initiatives (leadership, selective recruitment, and internal promotion) to illustrate the arguments. The article concludes by discussing a series of implications and highlighting the pivotal role of the HR academy and practitioners in generating deeper insights and attention into the potential sources of EM disadvantage that are linked to culture and culture management.     

Income distribution and inequality measurement: The problem of extreme values

We examine the statistical performance of inequality indices in the presence of extreme values in the data and show that these indices are very sensitive to the properties of the income distribution. Estimation and inference can be dramatically affected, especially when the tail of the income distribution is heavy, even when standard bootstrap methods are employed. However, use of appropriate semiparametric methods for modelling the upper tail can greatly improve the performance of even those inequality indices that are normally considered particularly sensitive to extreme values.     

The fundamental theorem of asset pricing under transaction costs

This paper proves the fundamental theorem of asset pricing with transaction costs, when bid and ask prices follow locally bounded càdlàg (right-continuous, left-limited) processes. The robust no free lunch with vanishing risk condition (RNFLVR) for simple strategies is equivalent to the existence of a strictly consistent price system (SCPS). This result relies on a new notion of admissibility, which reflects future liquidation opportunities. The RNFLVR condition implies that admissible strategies are predictable processes of finite variation. The Appendix develops an extension of the familiar Stieltjes integral for càdlàg integrands and finite-variation integrators, which is central to modelling transaction costs with discontinuous prices.     

The fuzzy multicriteria analysis method: an application on NPV ranking

The Net Present Value (NPV) approach is often used as a tool to rank projects and it uses a total order approach. This paper applies a new method developed by De Baets and Van de Walle (1994, 1995) and which we will call ‘fuzzy multicriteria analysis’ (FMCA). The main objective of this new method is to weaken the total order into a fuzzy quasi-order in which incomparability between alternatives is possible. Although other methods such as Roy’s outranking method also deal with the issue of incomparability, there are important methodological differences between FMCA and outranking. We consider first an application of FMCA to a general NPV ranking problem. Some properties are derived which may be useful and we then describe an application to a practical example in which three projects yield the same NPV outcome. Different alpha-cuts imply different crisp quasi-orders. The use of FMCA shows that, in this sample case, though the projects have equal NPVs, a ranking may still be possible. Copyright © 1998 John Wiley & Sons, Ltd.     

The False Promise of Organizational Culture Change: A Case Study of Middle Managers in Grocery Retailing*

ABSTRACT The strategic importance of managing organizational culture has been a central theme in organizational literature over the past two decades. But relatively little attention has been given to the impact of culture change initiatives on managers. This paper reports on the impact of a programme of culture change on managers at one of Britain's leading grocery retail chains. Based on a series of detailed interviews with managers together with examination of company documents and an understanding of trends in grocery retailing, we explain the purpose and content of change, and document and analyse the reactions of those managers who are expected to change their own cultural orientations as well as persuade their subordinates to change. We conclude that in this case at least changes in managerial behaviour, as with previously documented changes in the behaviour of shopfloor workers, are related more to surveillance, direct control and the threat of sanction than any transformation of managerial values. Indeed, the situation and experiences of managers – one of reduced autonomy, close monitoring and control, and perceived career insecurity – are explained less in relation to ‘organizational culture’, more in relation to organizational (re‐)structuring intended to create a more centralized form of organizational control.     

International transfer pricing and income shifting: evidence from the UK

The potential use of international transfer pricing (ITP) as an income-shifting mechanism by multinational enterprises (MNEs) has long been recognized. However, there is relatively little evidence to substantiate or discount this claim in relation to UK-based foreign-controlled enterprises (FCEs). This paper examines the possible use of ITP as an income-shifting mechanism by FCEs operating in the UK. The methodological approach involves the comparison of the profitability (performance) and dividend (post-performance) distributions of a sample of FCEs with those of UK-controlled enterprises (UKCEs) over a two-year period. The two samples are matched on the basis of their total assets (capability). Results reveal significant differences in the profitability and dividend distributions of the two groups. FCEs underperform UKCEs, but their level of dividend distribution outstrips those of UKCEs. Based on this sample of seventy-two companies, a firm is more likely to be an FCE, rather than a UKCE, if it reports a combination of lower performance and higher post-performance distribution. Evidence of significant income shifting by FCEs is confirmed and the claim that ITP is the key mechanism for such shifts cannot be dismissed.     

Bridging Business and Society: The Abrinq Foundation in Brazil

This article presents the process of creation and expansion of the Fundação Abrinq pelos Direitos da Criança et do Adolescente (Abrinq Foundation for Rights of Children and Adolescents). Established in 1990 by a group of entrepreneurs from the Brazilian Toy Manufacturers’ Association (ABRINQ), the Fundação Abrinq has been successful at raising the issue of children in Brazilian society by bridging business and several other sectors of society. This article more particularly examines (1) the societal challenges related to the situation of children in Brazil; (2) the creation and development of the Abrinq Foundation; and (3) the achievements of this innovative bridging organization over 15 years.