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A Logic Programming Approach for the Conservation of Buildings Based on an Exte...

The identification, classification and recording of events that may lead to the deterioration of buildings are crucial for the development of appropriate repair strategies. This work presents an extension of the Eindhoven Classification Model to sort adverse events root causes for Building Conservation. Logic Programming was used for knowledge representation and reasoning, letting the modelling of the universe ...

Encaminhamento com QoS para redes Ad Hoc com rotas estáveis

Devido às características próprias das redes móveis ad hoc (Mobile Ad hoc Network - MANET), dotar este tipo de redes de garantias de qualidade de serviço (QoS) no tráfego fim a fim torna-se um desafio. Este artigo apresenta um protocolo de encaminhamento com QoS para redes ad hoc, que se designa por Ad hoc QoS Multipath Routing with Route Stability (QMRS), que tem como objectivo suportar aplicações com requisit...

It Is the time for Portuguese texts!

In this work, we introduce a software testbed for temporal processing of Portuguese texts, composed by several building blocks: identification, classification and resolution of temporal expressions and temporal text segmentation. Starting from a simple document, we can reach a set of temporally annotated segments, which enables the establishment of relationships between words and time. This tem- porally enriche...

Energy impact analysis on DTN routing protocols

In this paper, a mechanism designed and implemented on a simulator module is used to study the energy consumption of a network node in a DTN. The mechanism accounts energy consumption in transmission and reception of a message and also in neighboring nodes discovery. These are routine operations performed by nodes as cell phones or PDAs that traditionally integrate the Delay Tolerant Networks. This module inclu...

Internet of things for medication control : service implementation and testing

RFID technology (Radio Frequency IDentification) enables putting an identification label (e.g. tag) into a certain object and, by means of a reader, get the information related to it without any physical contact. The use of these tags in medical context enables a rapid and precise identification of each patient and, by means of Internet of Things (IoT), enables a ubiquitous and quick access to medical related r...

Selecção da tipologia de cruzamentos em função da procura

Tese de mestrado. Faculdade de Engenharia. Universidade do Porto. 1998

O Fenómeno social no encaminhamento em redes oportunistas

As redes oportunistas ou tolerantes a atrasos surgiram com o objetivo de mitigar os problemas comuns a cenários de comunicação de topologia dinâmica onde os noós se encontram em constante movimento. Esta ló́gica implica contradições a vários níveis nos modelos tradicionais TCP/IP, particularmente numa perspetiva aplicacional e de rede. A introdução de propostas como oBundleProtocol veio resolver,emparte,alguns ...

Identifying cognitive abilities to improve CS1 outcome

Introductory programming courses entail students’ high failure and dropout rates. In an effort to tackle this problem, we carried out a qualitative study aiming to shed some light on the programming phase that is most challenging for students, in order to elicit the specific difficulties they experience while learning to program. In doing so, distinctive cognitive abilities, differentiating subjects in terms of...

Programação de computadores : compreender as dificuldades de aprendizagem dos a...

As dificuldades dos alunos na aprendizagem das disciplinas de programação de computadores são frequentes, explicando o insucesso académico e o abandono de alguns alunos nos cursos de informática. Neste artigo, descrevemos tais dificuldades tomando o discurso de professores e de alunos, contrastando aqui alunos com bom e fraco rendimento Neste sentido, após um levantamento da literatura internacional na área, de...

Actas da 10ª Conferência sobre Redes de Computadores