Readers may make verbatim copies of this document for non-commercial purposes by any means, provided that this copyright notice appears on all such copies. Summary The Maximum Likelihood method estimates the parameter values of a statistical model that maximize the corresponding likelihood function, given the sample information. This is the primal approach that, in this paper, is presented as a...

Genetic studies often collect data on multiple traits. Most genetic association analyses, however, consider traits separately and ignore potential correlation among traits, partially because of difficulties in statistical modeling of multivariate outcomes. When multiple traits are measured in a pedigree longitudinally, additional challenges arise because in addition to correlation between trait...

In this paper we investigate how country shareholding arrangements affect the lending of multilateral development banks (MDBs) under different economic conditions and over time. To do so, we consider three different “types” of MDBs—one dominated by non-borrowers (the World Bank), another controlled by borrowing countries (the Corporación Andina de Fomento, CAF), and a third where control is mor...

Although the economic and statistical theory underlying the estimation of systems of demand functions is well developed, very little attention has been paid to the problems which arise when the sample contains a significant proportion of observations in which expenditure on one or more goods is zero. For such a sample the econometric model should allow for zero expenditures to occur with positi...

OBJECTIVE Observational studies on the association among systemic/general and oral cavity indices, tooth loss, periodontal conditions, and socioeconomic inequalities are to be still performed in the population of Southern Europe. This study aims to determine the extent of this relationship among Italian healthy adults 50 years of age and above. MATERIALS AND METHODS Socioeconomic and lifestyl...

Genetical genomics experiments have now been routinely conducted to measure both the genetic markers and gene expression data on the same subjects. The gene expression levels are often treated as quantitative traits and are subject to standard genetic analysis in order to identify the gene expression quantitative loci (eQTL). However, the genetic architecture for many gene expressions may be co...

We use the simulation model ofCbalfallt and Gallant (IUS5) to investigate the fit of a Fourier flexible form to a cost function when interest is t.o estimate elasticities of substitution. The data is subject to errors in variables and the estimation method is seemingly unrelated regressions. \IVe use two approximating Fourier functional forms * Hesearch supported by C:-IPq ** Banco do Brasil, C...

This study examined the substantive and predictive validity facets of the University Entrance Examination for English Major (UEEEM) students. To that aim, 111 English major students were recruited to report their scores on each of the subtests of the test as well as their grade point average. Sequential multiple regressions and factor analysis were used in the analysis of the data. Results ackn...