In this paper, we propose a novel approach for exploiting structural relations to track multiple objects that may undergo long-term occlusion and abrupt motion. We use a model-free approach that relies only on annotations given in the first frame of the video to track all the objects online, i.e. without knowledge from future frames. We initialize a probabilistic Attributed Relational Graph (AR...

Three mutants of OX174 were examined for their abilities to grow in temperature-sensitive dnaA, dnaC, dnaE, or dnaG mutants of Escherichia coli. The results indicate that the phage mutants have acquired the ability to grow in some tsDNA mutants that normally block the replication of wild-type OX174. Evidence is presented indicating that the phage mutants contain one or more altered structural p...

The subject of the illegality and informality of the urban settlements is intrinsically related to the urbanization process in Brazil, so that the country is globally known by the “favelas” of the great cities. However, the phenomenon tends to sprawl for almost all Brazilian cities starting from a certain size and development level. Pelotas (323,000 inhabitants) is a medium city located in the ...

This paper uses models of visual attention in order to estimate the human visual perception and thus improve metrics of Video Quality Assessment. This work reports on the use of the saliency based model in a fullreference structural similarity metric for creating new metrics that take into account regions that greatly attract the human attention. Correlation results with the differential mean o...

Public participation in scientific research can be a powerful supplement to more-traditional approaches. We discuss aspects of the public participation project Foldit that may help others interested in starting their own projects.

A technique of edge detect ion and l i nk ing for l inear feature ex t rac t ion and i t s appl icat ions to detect ion of roads and runway l i k e structures is described. Experimental resu l ts are included.

We reinterpret the structural analysis of Karlin and Scarf and Morton of the standard lost-sales inventory system. This version of the results is, we think, easier to work with than the original. We also recover their bounds on the optimal policy and derive new ones. Then, we show that more variable demand leads to higher cost. Finally, we extend the analysis to several important variations of ...