Recursos tecno-metodológicos para descrição e recuperação de informações na Web

Pós-graduação em Ciência da Informação - FFC

Integración del sistema de transporte urbano: la experiencia de Curitiba

Incluye Bibliografía

O clima como um dos fatores de expansão da cultura da soja no Rio Grande do Sul, Paraná e Mato Grosso

Pós-graduação em Geografia - FCT

Use of classification in organizing and searching the web

The traditional characteristics and challenges for organizing and searching information on the World Wide Web are outlined and reviewed. The classification features of two of these methods, such as Google, in the case of automated search engines, and Yahoo! Directory, in the case of subject directories are analyzed. Recent advances in the Semantic Web, particularly the growing application of ontologies and Linked Data are also reviewed. Finally, some problems and prospects related to the use of classification and indexing on the World Wide Web are discussed, emphasizing the need of rethinking the role of classification in the organization of these resources and outlining the possibilities of applying Ranganathan's facet theories of classification.

Proposta de arquitetura e protocolo para a geração automática de assinaturas de malwares

Given the exponential growth in the spread of the virus world wide web (Internet) and its increasing complexity, it is necessary to adopt more complex systems for the extraction of malware finger-prints (malware fingerprints - malicious software; is the name given to extracting unique information leading to identification of the virus, equivalent to humans, the fingerprint). The architecture and protocol proposed here aim to achieve more efficient fingerprints, using techniques that make a single fingerprint enough to compromise an entire group of viruses. This efficiency is given by the use of a hybrid approach of extracting fingerprints, taking into account the analysis of the code and the behavior of the sample, so called viruses. The main targets of this proposed system are Polymorphics and Metamorphics Malwares, given the difficulty in creating fingerprints that identify an entire family from these viruses. This difficulty is created by the use of techniques that have as their main objective compromise analysis by experts. The parameters chosen for the behavioral analysis are: File System; Records Windows; RAM Dump and API calls. As for the analysis of the code, the objective is to create, in binary virus, divisions in blocks, where it is possible to extract hashes. This technique considers the instruction there and its neighborhood, characterized as being accurate. In short, with this information is intended to predict and draw a profile of action of the virus and then create a fingerprint based on the degree of kinship between them (threshold), whose goal is to increase the ability to detect viruses that do not make part of the same family

Sociedad de la Información: uso de la Web 2.0 por comunicadores politicos brasileros

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Folkcomunicación ciudadana a partir de la web 2.0 y de la movilidad

The social media are increasingly present in the lives of citizens, especially when the intention is to share views and information among its communities. However, that is something that leaves the control of citizens near the cluster communication, and reinforce construction of public opinion. This paper presents, from a conceptual discussion and case study grounds to believe that contemporary citizens are the true owners of the fourth estate.

Scalable Web Server Clustering Technologies

The exponential growth of the Internet, coupled with the increasing popularity of dynamically generated content on the World Wide Web, has created the need for more and faster Web servers capable of serving the over 100 million Internet users. Server clustering has emerged as a promising technique to build scalable Web servers. In this article we examine the seminal work, early products, and a sample of contemporary commercial offerings in the field of transparent Web server clustering. We broadly classify transparent server clustering into three categories.

Diseño de un amplificador distribuido para ultra wide band basado en HBT de la tecnología SIGE 0.35 μm de AMS

Memoria y presentación del Proyecto Fin de Carrera titulado "DISEÑO DE UN AMPLIFICADOR DISTRIBUIDO PARA ULTRA WIDE BAND BASADO EN HBT DE LA TECNOLOGÍA SIGE 0.35 μm DE AMS"