Lutas sociais e ciberespaço: o uso da Internet pelo movimento passe livre nas manifestações de junho de 2013 em São Paulo

Pós-graduação em Ciências Sociais - FFC

Análise de eventos de segurança em redes de computadores utilizando detecção de novidade

Pós-graduação em Ciência da Computação - IBILCE

Roteamento de consultas em banco de dados peer-to-peer utilizando colônias de formigas e ontologias

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Detecção de eventos de segurança de redes por intermédio de técnicas estatísticas e associativas aplicadas a fluxos de dados

Pós-graduação em Ciência da Computação - IBILCE

FLEXLAB: Middleware de virtualização de hardware para gerenciamento centralizado de computadores em rede

Pós-graduação em Ciência da Computação - IBILCE

Proposta e modelagem de comunicação segura para redes veiculares (VANETS)

Pós-graduação em Ciência da Computação - IBILCE

A imagem digital da TV na copa do mundo de 2010

Pós-graduação em Comunicação - FAAC

XSOFT: estudo de reconhecimento, exploração e prevenção de vulnerabilidades de software através de uma distribuição LINUX

This work aims to give greater visibility to the issue of software security, due to people talk a lot in security conferences, that much of both IT (Information Technology) staff and, more specifically, IS (Information Security) staff does not know this, and, thanks to the spread of the mobile computing and of the cloud computing, this lack of deeper knowledge on this subject is increasingly becoming worrisome. It aims too, make applications to be developed in a security manner, priorizing the security of the information processed. It attempts to demonstrate the secure coding techniques, the principles of software security, the means to identify software vulnerabilities, the cutting-edge software exploitation techniques and the mechanisms of mitigation. Nowadays, the security guys are in charge of the most of the security tests in applications, audits and pentests, and it is undeniable that the so-called security experts, most often come from computer network field, having few experience in software development and programming. Therefore, the development process does not consider the security issue, thanks to the lack of knowledge on the subject by the developer, and the security tests could be improved whether security experts had a greater know-how on application development. Given this problem, the goal here is to integrate information security with software development, spreading out the process of secure software development. To achieve this, a Linux distribution with proof of concept applicati... (Complete abstract click electronic access below)

Um ambiente computacional para emular em rede aplicações interativas desenvolvidas para televisão digital

Pós-graduação em Televisão Digital: Informação e Conhecimento - FAAC

Museu e suas tipologias: o webmuseu em destaque

The rapid development of Information and Communication Technologies - TIC, coupled with the advancement of the global Internet computer network have framed new concepts and definitions such as virtual reality, immersive environments, webmuseums, digital museums, electronic art, cyber art, among other terminologies that are becoming more and more common and are present in everyday Web users. To better understand the terminologies used to describe museum in the virtual environment, we present a summarized table of terms such as webmuseum, virtual museum, digital museum and their derivatives in order to define the elements that differentiate or resemble them. We used the bibliographic descriptive method for identifying the concepts presented by some expert authors in the field. In conclusion, we recommend the use of the term webmuseum for museums in cyberspace as the most appropriate and we define the concept, comprehending its meaning and characteristics.

Análise de desempenho de redes de comunicação wireless em aplicações de Smart Grid

Pós-graduação em Engenharia Elétrica - FEIS

An enhanced genetic algorithm to solve the static and multistage transmission network expansion planning

An enhanced genetic algorithm (EGA) is applied to solve the long-term transmission expansion planning (LTTEP) problem. The following characteristics of the proposed EGA to solve the static and multistage LTTEP problem are presented, (1) generation of an initial population using fast, efficient heuristic algorithms, (2) better implementation of the local improvement phase and (3) efficient solution of linear programming problems (LPs). Critical comparative analysis is made between the proposed genetic algorithm and traditional genetic algorithms. Results using some known systems show that the proposed EGA presented higher efficiency in solving the static and multistage LTTEP problem, solving a smaller number of linear programming problems to find the optimal solutions and thus finding a better solution to the multistage LTTEP problem. Copyright © 2012 Luis A. Gallego et al.

Artificial neural network model of discharge lamps in the power quality context

This paper presents a methodology for modeling high intensity discharge lamps based on artificial neural networks. The methodology provides a model which is able to represent the device operating in the frequency of distribution systems, facing events related to power quality. With the aid of a data acquisition system to monitor the laboratory experiment, and using $$\text{ MATLAB }^{\textregistered }$$ software, data was obtained for the training of two neural networks. These neural networks, working together, were able to represent with high fidelity the behavior of a discharge lamp. The excellent performance obtained by these models allowed the simulation of a group of lamps in a distribution system with shorter simulation time when compared to mathematical models. This fact justified the application of this family of loads in electric power systems. The representation of the device facing power quality disturbances also proved to be a useful tool for more complex studies in distribution systems. © 2013 Brazilian Society for Automatics - SBA.

Gerenciamento integrado de rede local com software livre

Pós-graduação em Engenharia Elétrica - FEIS

Design and Analysis of Optical Interconnection Networks for a Dataflow Parallel Computer

This work shows the design, simulation, and analysis of two optical interconnection networks for a Dataflow parallel computer architecture. To verify the optical interconnection network performance on the Dataflow architecture, we have analyzed the load balancing among the processors during the parallel programs executions. The load balancing is a very important parameter because it is directly associated to the dataflow parallelism degree. This article proves that optical interconnection networks designed with simple optical devices can provide efficiently the dataflow requirements of a high performance communication system.