Search

We study to what extent some functional form assumption on the Lorenz curve are amenable to calculating headcount poverty, or poverty threshold, the key concept to determine a poverty index. The difficulties in calculating it have been underestimated. We must choose some functional forms for the Lorenz concentration curve. We examine three families of one-parameter functional forms to estimate Lorenz curves: power (elementary and Pareto), exponential (elementary and Gupta) and fractional (Rohde). Computing these numerical functions may be difficult and impose some restrictions on their domain of definition, may impose to use some numerical approximation methods. The elementary power and exponential forms are not a problem. However, Pareto raises the problem of a restricted domain of definition for its parameters. The exponential form of Gupta leads to a Lambert function that poses multiple problems, including a restricted field of definition. The fractional form of Rohde has also a restricted domain of definition. It is probably time to choose functional forms not only according to their ability to fit the data, but also according to their ability to calculate poverty indices.

Contribution to the Study of the Organizational Slack : The Case of Investment Expenditure in a Big Industrial Company This paper contributes to research on organizational slack. The slacks integrated into capital expenditure have been little studied. The economic crisis in 2008-2009 represents a good opportunity to analyze these slacks. A longitudinal case study has been carried out in an industrial company from 2006 to 2010, Contribución al estudio del slack organizacional : el caso de los gastos de inversiones en una grande empresa industrial Este artículo contribuye a la investigación sobre la holgura de la organización. Los slacks integrados en los gastos de inversiones han sido hasta ahora poco explorado. La crisis económica en 2008- 2009 promueve el cumplimiento de estos slacks. Un caso de estudio longitudinal llevado a cabo en una empresa industrial desde 2006 hasta 2010 se restaura., Cet article contribue à la recherche sur le slack organisationnel. Les slacks intégrés dans les dépenses d’investissements ont jusqu’à présent été peu explorés. Le contexte de crise économique en 2008-2009 favorise l’observation de ces slacks. Une étude de cas longitudinale réalisée dans une entreprise industrielle de 2006 à 2010 est restituée.