This paper utilizes several tests to analyze serial dependence in financial data. In an attempt to provide a better explanation of the behavior of financial markets, we utilized tests that make use of mutual information and developed a detrended fluctuation analysis (DFA). Applying these tests...

This paper shows that a test for heteroskedasticity within the context of classical linear regression can be based on the difference between Wald statistics in heteroskedasticity-robust and nonrobust forms. The test is asymptotically distributed under the null hypothesis of homoskedasticity as...

The forest management of the areas in the Mediterranean basin is a problem that needs a careful solution, accounting and valorising all the economical activities that exist there and considering the fire risk decrease and the biodiversity preservation. In order to overcome this problem, this...

The aim of this research is to carry out a systematic literature review of the studies devoted to the performance assessment of primary health care providers. Focusing on the peculiarities of performance evaluation in the public sector, we analyse the selected empirical papers in terms of the...

The present article discusses alternative regression models and estimation methods for dealing with multivariate fractional response variables. Both conditional mean models, estimable by quasi-maximum likelihood, and fully parametric models (Dirichlet and Dirichletmultinomial), estimable by...

The livestock species play very important economic and socio-cultural roles for the wellbeing of rural households, such as food supply, source of income, asset saving, source of employment, soil fertility, livelihoods, transport, agricultural traction, agricultural diversification and...

Every year thousands of hectares of forest are destructed as a result of the practice of swidden agriculture, shifting cultivation or "slush and burn" causing changes in forest ecosystems. In Timor-Leste shifting cultivation is still practiced nowadays as a form of subsistence agriculture. The...

This paper presents a case study in which the effects of traditional Mediterranean crop farming system of the Alentejo region of Portugal on environment are evaluated and benchmarked. With this objective a typical farm of the region using that traditional system based on a crop-rotation of durum...

Portugal is a heterogeneous territory even though it is a small country. Each region has different characteristics, which makes the country as an evident case for the need of an effective cohesion policy leading to a diminishment of regional disparities. In this paper we analyze and assess the...

This paper develops a model where the incumbent may expand to a second related market so as to signal the existence of scope economies and deter potential entry. We show that the incumbent only expands to another market when scope economies are large enough. Thus expansion is indeed a signal of...