AIDS is one of the most significant health care problems worldwide. Due to the difficulty and costs involved in treating HIV, preventing infection is of paramount importance in controlling the AIDS epidemic. The main purpose of this paper is to explore the potential of using Data Envelopment...

This paper investigates the effect of a going concern opinion (GCO) on the equity value of the announcing firm’s competitors. On average, GCOs increase the value of a value-weighted portfolio of rivals by 0.37% at the event date. This positive effect is significantly larger when the announcing...

In this paper we develop a new model for stochastic mortality that considers the possibility of both positive and negative catastrophic mortality shocks. Specifically, we assume that the mortality intensity can be described by an affine function of a finite number of latent factors whose...

The objectives of this paper are twofold – first we discuss innovation in the service sector, especially in tourism. Secondly, we apply the diagnostic test of the integrated model of innovation (Sarkar 2005, 2007) to present the results of an empirical study applied to tourism in a small open...

This paper addresses the role of security analysts in the short-term market reaction to the publication of a going -concern (GC) modified audit report. We find that the 3-day mean abnormal return associated with the GC announcement is at least -6.9% for firms with analyst coverage in comparison...

In the Mediterranean forests there is a diversity of agro-forest farms, with different management objectives and socioeconomic characteristics, which need to be accounted in forest management models. Therefore, the following paper presents a proposal of indicators to characterize...

In life insurance, actuaries have traditionally calculated premiums and reserves using a deterministic mortality intensity, which is a function of the age of the insured only. Over the course of the 20th century, the population of the industrialized world underwent a major mortality transition,...

This paper aims to estimate the farm cost allocation coefficients from whole farm input costs. An entropy approach was developed under a Tobit formulation and was applied to a sample of farms from the 2004 FADN data base for Alentejo region, Southern Portugal. A Generalized Maximum Entropy model...

TTypically, studies on regional wage differentials are based on OLS estimates and use Blinder (1973) and Oaxaca (1973) decomposition. Quantile regression is an alternative approach which allows for studying these differences across the whole wage distribution. In this study, the quantile...

Today, innovation is present in the discourse of politicians and business leaders. They see innovation as a positive value and as a solution to solve social problems and company’s competitiveness, so organizations are encouraged to adopt innovative practices through incentives and innovation...