We show that the equivalence between certain problems of singular stochastic control (SSC) and related questions of optimal stopping known for convex performance criteria (see, for example, Karatzas and Shreve (1984)) continues to hold in a non convex problem provided a related discretionary...

A problem of optimally purchasing electricity at a real-valued spot price (that is, with potentially negative cost) has been recently addressed in De Angelis, Ferrari and Moriarty (2015) [SIAM J. Control Optim. 53(3)]. This problem can be considered one of irreversible investment with a cost...

Professor Leif Johansen (1930 - 1982) made significant contributions to a large number of fields in economics. A short survey of his contributions is presented. The main focus in the paper is on his growth - production program constituting an important part of his research. The key concepts are...

Previous literature has suggested that different mechanisms of transmission of exogenous oil shocks are responsible for the negative effects on the economic performances of oil exporting countries. This paper aims at providing further evidence on the role of sectoral reallocation between private...

In this article, we present a procedure for obtaining an optimal solution to the Markowitz's mean-variance portfolio selection problem based on the analytical solution developed in a previous research that lead to the emergence of an important model known as the Black Model. The procedure is...

In the present paper an empirical analysis will point out that austerity measures due to high levels of government debt as a percentage of GDP have (among others) a positive impact on social unrest measured by the number of strikes. The empirical findings of the present paper support the view of...

In the present paper an empirical analysis will point out that government debt as a percentage of GDP has a negative impact (among others) on banking profitability. This impact will be even worse when this debt as a percentage of GDP exceeds a certain critical level. The sample covers during the...

In this small paper author makes some comments on the relation between Income Distribution and the Government Debt as a percentage of GDP. It is estimated through a panel data model that optimum Income Distribution takes place at a critical level of Government Debt as a percentage of GDP....

This paper extends the economic growth model tested by Levine and Zervos (1998) by including a measure for capital allocation efficiency proxied by stock price informativeness. Using a sample of 59 countries, this study finds that stock price informativeness as measured by firm-specific return...

Abstract One of the fundamental questions in finance is how to select an investment portfolio? The most popular model is the Mean-Variance (MV) model that was presented by Markowitz in 1952. In the MV model, the optimization problem is a constrained quadratic functional. An optimal portfolio...