Arthur José Vieira Porto

Learn More
The study of the genetic variance/covariance matrix (G-matrix) is a recent and fruitful approach in evolutionary biology, providing a window of investigating for the evolution of complex characters. Although G-matrix studies were originally conducted for microevolutionary timescales, they could be extrapolated to macroevolution as long as the G-matrix(More)
The evolution of digital circuit technology, leadind to higher speeds and more reliability allowed the development of machine controllers adapted to new production systems (e.g., Flexible Manufacturing Systems-FMS). Most of the controllers are developed in agreement with the CNC technology of the correspondent machine tool manufacturer. Any alterations or(More)
It has come to our attention that the article 'Selection Response Decomposition (SRD): A New Tool for Dissecting Differences and Similarities Between Matrices' (Marroig et al. 2011) contains an error in Fig. 1. This figure should show the mean and confidence intervals for the correlation between random vectors in various dimensions. We take this opportunity(More)
Allometry is a major determinant of within-population patterns of association among traits and, therefore, a major component of morphological integration studies. Even so, the influence of size variation over evolutionary change has been largely unappreciated. Here, we explore the interplay between allometric size variation, modularity, and life-history(More)
This paper summarizes the results of a simulation study for a Parts Distribution Center (PDC), which contains approximately 30000 items, modeling its retrieving process in simulation software ARENA® 5.0. The collection of the parts is carried out manually by five employees, being supported by manual trolleys. The current problem of PDC is to decide if(More)
Recent advances in wireless networking technology and the proliferation of industrial wireless sensors have led to an increasing interest in using wireless networks for closed loop control. The main advantages of Wireless Networked Control Systems (WNCSs) are the reconfigurability, easy commissioning and the possibility of installation in places where(More)
We tested the hypothesis that the rate of marsupial cranial evolution is dependent on the distribution of genetic variation in multivariate space. To do so, we carried out a genetic analysis of cranial morphological variation in laboratory strains of Monodelphis domestica and used estimates of genetic covariation to analyse the morphological diversification(More)
In this project, the main focus is to apply image processing techniques in computer vision to agricultural mobile robots (AMR) used for trajectory navigation problems, as well as localization matters. To carry through this task, computational methods based on the JSEG algorithm were used to provide the classification and the characterization of such(More)