Discussion boards are a form of social media which allow users to discuss topics and exchange information in a complex manner, in a number of different settings. As the popularity of such message boards has increased, communities of users have emerged, and several prominent types of social role have been identified, such as Question Answerer, Celebrity, Discussion Person and Topic Initiator. Re...

A model is presented for a problem of scheduling the lengths of N production periods on one machine, which will manufacture q products. The problem is to choose production periods so as to minimize the sum of inventory costs for the q products in the presence of given demands. Mathematically, the problem is one of minimizing an indefinite quadratic function subject to linear constraints. A nume...

A cercopithecoid primates first evolved in the latter part of the Miocene epoch, it was not until the Plio-Pleistocene when the two subfamilies of Old World monkeys, the colobinae and cercopithecinae, started to morphologically and ecologically diversify. This diversification is well documented in the primate fossil record, especially in the Koobi Fora Formation. In The Fossil Monkeys, which is...

UNLABELLED Data on the prevalence of disabling hearing loss (DHL) in Brazil is scarce, which impacts healthcare professionals' knowledge on the extent of the problem. OBJECTIVES This study aimed at estimating DHL prevalence in the municipality of Juiz de Fora, Minas Gerais, to identify individual-related variables and find risk areas. MATERIALS AND METHODS This was a descriptive sectional p...

OBJECTIVE To verify changes in placental morphology of small for gestational age newborns, considering that the occurrence of placental alterations is more frequent in small for gestational age (SGA) infants than in appropriate for gestational age (AGA) infants. METHODS Fifty SGA newborns were included in a cross-sectional study, which involved gross anatomy and light microscopy of placenta, ...

An important topic of study in the field of Augmented Reality is the development of systems that do not require the use of fiducial markers in the scene. In these systems only natural features of the scene are used to position the camera and then performing the projection. This characteristic makes the applications more intelligible and its utilization is immediate. However, there are not many ...

Uniformly-spaced apertures or subapertures of large, densely-sampled, discrete linear receiver arrays are often used in remote sensing to increase the signal-to-noise ratio (SNR) by coherent beamforming that reduces noise coming from directions outside the signal beam. To avoid spatial aliasing or the presence of grating lobes in real spatial directions, the uniformly-spaced array inter-element...