AMS classifications: 90C22; 90C20;

AMS classifications: 90C22; 90C20;

AMS classifications: 90C15; 90C20; 90C90; 49M29;

AMS classifications: 90C22; 90C20;

In this paper we study several issues related to the characterization of speci c classes of multivariate quadratic mappings that are nonnegative over a given domain, with nonnegativity de ned by a pre-speci ed conic order.In particular, we consider the set (cone) of nonnegative quadratic...

A second-order asymptotic result for the probability of occurrence of a persistent and aperiodic recurrent event is given if the tail of the distribution of the waiting time for this event is regularly varying with index -1.

__Abstract__ We test risk attitude and risk propensity of executive and non-executive directors of almost all (read: 10) companies listed at the Suriname Stock Exchange. This stock exchange associates with an emerging market, which currently seems to be at its initial stage. With a personalized...

__Abstract__ The paper investigates the impact of jumps in forecasting co-volatility, accommodating leverage effects. We modify the jump-robust two time scale covariance estimator of Boudt and Zhang (2013) such that the estimated matrix is positive definite. Using this approach we can...

__Abstract__ In this paper we study the determinants of skilled return migration from the Netherlands to Suriname. Based on a survey of Gibson and McKenzie (2011) we managed to interview 283 former top students from Suriname. This unique database is informative in various dimensions. High...

__Abstract__ The premise underlying the use of citations data is that higher quality journals generally have a higher number of citations. The impact of citations can be distorted in a number of ways. Journals can, and do, inflate the number of citations through self citation practices, which...