Buscar recursos académicos

It is well known that most of the standard specification tests are not valid when the alternative hypothesis is misspecified. This is particularly true in the error component model, when one tests for either random effec...

This paper derives unbalanced versions of the tests statistics for first order serial correlation and random individual e®ects summarized in Sosa Escudero and Bera (2001), and updates their xttest1 routine. The derived ...

"In this work, we present goodness-of-fit tests related to the Kolmogorov-Smirnov and Michael statistics and connect them to graphical methods with uncensored and censored data. The Anderson-Darling test is often empiric...

The traditional view of colonization of the Americas as a migration across Beringia and subsequent dispersal southward following the last glacial maximum is being increasingly questioned. In North America, archaeological...

Metronidazole (MTZ) is a wonderful drug, which is used clinically to treat a wide range of bacterial and protozoal infections. This study aimed to achieve a precise characterization of the cytotoxic and genotoxic activit...

Although octyldodecanol has been used for several decades as an ingredient for emulsions, no required Hydrophilic-Lipophilic Balance (HLB) values for this alcohol were found in the literature. The purpose of this paper...

Matricaria recutita L. (Asteraceae), better known as chamomile, has been used due to its pharmacological properties. Laboratory-manufactured gels with chamomile extract were developed with the evaluation of the physical-...

In this paper we study the regional evolution of unemployment in Argentina for the period 1980-1997. We show that its regional unemployment structure is not very persistent. We then apply panel data unit root tests to sh...

"Program repair techniques attempt to fix programs by looking for patches within a search space of fix candidates. These techniques require a specification of the program to be repaired, used as an acceptance criterion f...

Background: Clinical examinations increasingly consist of composite tests to assess all aspects of the curriculum recommended by the General Medical Council. Setting: A final undergraduate medical school examination for...

Polymer rheological behavior in an Enhanced Oil Recovery (EOR) project is one of the critical factors to determine whether the polymer injection would be effective to increase the oil production in a field. Due to compli...