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Publicações

2015

O impacto dos sistemas e tecnologias de informação no turismo em espaço rural na região do Algarve

Autores
Pego, Ana; Bernardo, Maria do Rosário Matos;

Publicação
Dos Algarves: a Multidisciplinary e-Journal

Abstract
O presente artigo tem como objeto os resultados dum estudo que teve por objetivo a investigação do uso dos sistemas e tecnologias de informação (STI) no turismo em espaço rural (TER) na região do Algarve. Os resultados foram obtidos através de um questionário eletrónico, direcionado a proprietários e/ou gestores de 51 unidades TER, no qual se procurou identificar o impacto dos STI nas variáveis: tomada de decisão; satisfação dos gestores quanto ao uso dos STI; qualidade do serviço de reservas de quarto; e resultados financeiros. O estudo permitiu concluir que, de uma forma geral, a utilização dos STI são uma componente importante na gestão das unidades TER e têm impactos positivos na identificação de problemas e minimização do seu tempo de resolução; na confiança depositada no sistema e linguagem utilizada no computador; na qualidade das reservas de quartos; e nos resultados financeiros por via da inovação em tecnologia e existência de rede na organização.;This article aims to present the results of a study that investigated the use of information systems and technologies (IST) in tourism in rural space (TRS) in the Algarve region. The results were obtained through an electronic questionnaire given to the owners and/or managers of fifty one units TRS, in which we tried to identify the impact of IST in the following variables: decision making, satisfaction of managers in the use of IST, quality of room reservations service, and financial results. The study concluded that, in general, the use of IST are an important component in the TRS units of management and have positive impacts in identifying problems and minimizing their time resolution, confidence in the system and language used in the computer, the quality of rooms reservations, and financial results through innovation in technology, and network existence in the organization.

2015

The involvement of new ideas in products and services innovation: A technological approach

Autores
Monteiro, J; Santos, JD; Almeida, F;

Publicação
Economics: Concepts, Methodologies, Tools, and Applications

Abstract
This chapter intends to address the needs and the involvement to support communities of innovation in the process of the generation of new ideas. The relevance of this document focuses on information systems and socio-semantics collaborative networks. The support of collaboration is not a new need to human activities in business. Nevertheless, it has major importance due the temporal limitations of the innovative context. In fact, having an idea is not enough. It is necessary to put it on the ground before the competitors. The authors conclude that technology can facilitate the generation of new ideas, benefit business collaboration, and help increase the rate and efficiency in the generation of new ideas, while reducing the time spent in the negotiation of consensus and decreasing the implicit cost in the overall process. It is expected to contribute to the (re)utilization of the innovation memory and to preserve the organizational knowledge.

2015

Robust classification with reject option using the self-organizing map

Autores
Sousa, RG; Rocha Neto, ARd; Cardoso, JS; Barreto, GA;

Publicação
Neural Comput. Appl.

Abstract
Reject option is a technique used to improve classifier's reliability in decision support systems. It consists on withholding the automatic classification of an item, if the decision is considered not sufficiently reliable. The rejected item is then handled by a different classifier or by a human expert. The vast majority of the works on this issue have been concerned with implementing a reject option by endowing a supervised learning scheme (e.g., Multilayer Perceptron, Learning Vector Quantization or Support Vector Machines) with a reject mechanism. In this paper we introduce variants of the Self-Organizing Map (SOM), originally an unsupervised learning scheme, to act as supervised classifiers with reject option, and compare their performances with that of the MLP classifier. © 2014 Springer International Publishing Switzerland.

2015

Adding value to the learning process by online peer review activities: towards the elaboration of a methodology to promote critical thinking in future engineers

Autores
Dominguez, C; Nascimento, MM; Payan Carreira, R; Cruz, G; Silva, H; Lopes, J; Morais, MDFA; Morai, E;

Publicação
EUROPEAN JOURNAL OF ENGINEERING EDUCATION

Abstract
Considering the results of research on the benefits and difficulties of peer review, this paper describes how teaching faculty, interested in endorsing the acquisition of communication and critical thinking (CT) skills among engineering students, has been implementing a learning methodology throughout online peer review activities. While introducing a new methodology, it is important to weight the advantages found and the conditions that might have restrained the activity outcomes, thereby modulating its overall efficiency. Our results show that several factors are decisive for the success of the methodology: the use of specific and detailed orientation guidelines for CT skills, the students' training on how to deliver a meaningful feedback, the opportunity to counter-argument, the selection of good assignments' examples, and the constant teacher's monitoring of the activity. Results also tackle other aspects of the methodology such as the thinking skills evaluation tools (grades and tests) that most suit our reality. An improved methodology is proposed taking in account the encountered limitations, thus offering the possibility to other interested institutions to use/test and/or improve it.

2015

Coordination for Multi-robot Exploration Using Topological Maps

Autores
Pereira, T; Moreira, AP; Veloso, M;

Publicação
CONTROLO'2014 - PROCEEDINGS OF THE 11TH PORTUGUESE CONFERENCE ON AUTOMATIC CONTROL

Abstract
This paper addresses the problem of decentralized exploration and mapping of unknown environment by a multiple robot team. The exploration methodology relies on individual decision rules and communication of topological maps to achieve efficient and fast mapping, minimizing overlap of explored space. This distributed solution allows scalability of the proposed methods. Each robot broadcasts a graph representing the topological map, with information of exploration status of each region. Therefore, this kind of information can be transmitted to robots that are not in the communication range, through other robots in a multi-hop network. This work has been tested in simulation, and the results demonstrate the performance improvements and robustness that arise from our multirobot approach to exploration.

2015

Modelling and Verifying Smell-Free Architectures with the ARCHERY Language

Autores
Sanchez, A; Barbosa, LS; Madeira, A;

Publicação
SOFTWARE ENGINEERING AND FORMAL METHODS, SEFM 2014

Abstract
Architectural (bad) smells are design decisions found in software architectures that degrade the ability of systems to evolve. This paper presents an approach to verify that a software architecture is smell-free using the Archery architectural description language. The language provides a core for modelling software architectures and an extension for specifying constraints. The approach consists in precisely specifying architectural smells as constraints, and then verifying that software architectures do not satisfy any of them. The constraint language is based on a propositional modal logic with recursion that includes: a converse operator for relations among architectural concepts, graded modalities for describing the cardinality in such relations, and nominals referencing architectural elements. Four architectural smells illustrate the approach.

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