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Publicações

Publicações por SYSTEM

2010

Analysis of the Domain of Applicability of an Algorithm for a Resources System Selection Problem for Distributed/Agile/Virtual Enterprises Integration

Autores
Avila, P; Costa, L; Bastos, J; Lopes, P; Pires, A;

Publicação
SISTEMAS Y TECNOLOGIAS DE INFORMACION

Abstract
The process of resources systems selection takes an important part in Distributed/Agile/Virtual Enterprises (D/A/V Es) integration. However, the resources systems selection is still a difficult matter to solve in a D/A/VE, as it is pointed out in this paper. Globally, we can say that the selection problem has been equated from different aspects, originating different kinds of models/algorithms to solve it. In order to assist the development of a web prototype tool (broker tool), intelligent and flexible, that integrates all the selection model activities and tools, and with the capacity to adequate to each D/A/V E project or instance (this is the major goal of our final project), we intend in this paper to show: a formulation of a kind of resources selection problem and the limitations of the algorithms proposed to solve it. We formulate a particular case of the problem as an integer programming, which is solved using simplex and branch and bound algorithms, and identify their performance limitations (in terms of processing time) based on simulation results. These limitations depend on the number of processing tasks and on the number of pre-selected resources per processing tasks, defining the domain of applicability of the algorithms for the problem studied. The limitations detected open the necessity of the application of other kind of algorithms (approximate solution algorithms) outside the domain of applicability founded for the algorithms simulated. However, for a broker tool it is very important the knowledge of algorithms limitations, in order to, based on problem features, develop and select the most suitable algorithm that guarantees a good performance

2010

Virtual Factory Framework: An innovative approach to support the planning and optimization of the next generation factories

Autores
Azevedo, A; Francisco, RP; Bastos, J; Almeida, A;

Publicação
IFAC Proceedings Volumes (IFAC-PapersOnline)

Abstract
Industrial managers are in the expectation that the new generation factories bring more competitiveness to the manufacturing companies through innovative approaches, methods and tools that support the factory planning process. The concept of "factory as a product" perceives the factory as a complex long life product introducing design advantages for factory planning and optimization, seeking to improve quality, reduce ramp-up, product delivery and overall reduce time and costs. In order to attain these objectives, there is an urgent need for an innovative and suitable Virtual Factory Framework to structure the development of new generation factories. © 2010 IFAC.

2010

Managing Performance to Align the Participants of Collaborative Networks: Case Studies Results

Autores
Francisco, RD; Azevedo, A; Bastos, J;

Publicação
COLLABORATIVE NETWORKS FOR A SUSTAINABLE WORLD

Abstract
The paper underlines the interest of using a performance management system applied to monitor the strategy effectiveness and the interoperation's performance in the collaborative networks (CN). The aim with this study is to verify if a performance management system helps decision-makers reach the alignment among participants in a collaborative network. It is expected that this work provides an adequate tool for supporting quick decisions to meet the feasible and desirable improvements in inter-organisational processes. A framework (CNPMS) is also presented, having been developed to support the dynamic performance management, which was applied in case studies of two Brazilian collaborative networks.

2010

Using the Life-Cycle Paradigm to Support Factory Planning Approaches

Autores
Francisco, RD; Bastos, J; Azevedo, A;

Publicação
BALANCED AUTOMATION SYSTEMS FOR FUTURE MANUFACTURING NETWORKS

Abstract
In order to fulfill all challenges related to design, management, evaluation and reconfiguration of new or existing facilities, the development of a new, integrated and holistic factory framework is required. In this context, a new requirements model is proposed in the context of the innovative framework called Virtual Factory Framework. Using this approach in factory planning it is expected to improve the ability to generate better and more sustainable solutions over the entire factory life-cycle. This paper underlines the use of the life-cycle paradigm in order to enable the future factory planning approaches.

2010

A QUEST FOR THE RIGHT WORD ENHANCING REFLEXIVITY AND TECHNOLOGY IN TERMINOLOGY TRAINING

Autores
Silva, M; Albuquerque, A;

Publicação
4TH INTERNATIONAL TECHNOLOGY, EDUCATION AND DEVELOPMENT CONFERENCE (INTED 2010)

Abstract
When it comes to translators training, the acquisition of indexing and terminological competences (both at retrieval and management stage) has a major role in the performance of future translators. A good terminological database, as a result of an accurate research, along with computer assisted translation tools (CAT tools) can improve translation's speed and quality and also reduce revision costs, bringing in benefits for all the players in the translation industry: language service providers and clients. That process (analysis, selection, retrieval and storage of terminology) takes place mostly in the pre-translation stage, but underlies the whole translation work and can be a determining factor to the quality of the final product and to its homogeneity, especially when carried out in a collaborative environment. The development of terminological databases is an essential step in the training of translators and the efficient search for the right word a necessary skill in today's globalised translation market. Moreover being the quest for the right word almost entirely run over the Internet, data diversity can greatly increase the noise. This search poses several questions, mainly (1) how and where to retrieve information and (2) how to manage it efficiently, especially to students who are neither experts in terminology nor in translation. To ease some of these problems, students were assigned a project in terminology (a database) and, in order to accomplish it, both a Webquest and an ePortfolio were proposed as guidance tools. Along the process, students were expected to build up their thematic and communicative competence and, in parallel, widen their skills in computer-assisted translation tools as well as standard office-automation software. This paper aims at discussing how these two tools helped students guide their research, structure the problem solving activities, develop critical thinking and terminological competencies.

2010

Paradigm Shift: From ePortfolios to PLEs

Autores
Tavares, C; Oliveira, L; Silva, M;

Publicação
PROCEEDINGS OF THE 9TH EUROPEAN CONFERENCE ON E-LEARNING, VOL 1

Abstract
A Personal Learning Environment (PLE) reflects, as a concept, the combination of the set of tools that we use around internet, helping to perceive what we are and what we learn. PLEs are able to bring together all learning experiences acquired in different contexts and mix those experiences in order to reflect ones knowledge. This paper aims at analyzing and exploring the advantages of a PLE, focusing specially on the use of ePortfolios in this context, by considering different approaches and exploring the relationship between the development of an e-portfolio and the students learning styles and multiple intelligences. This focus results from our perception that being aware of the students learning preferences is essential to enhance the quality of the teaching-learning environment, developing different kinds of activities and using different learning tools. In order to understand if and how those concepts (ePortfolios, learning styles and multiple intelligences) are related and to develop some understanding on an approach to correlate them, we have used some assessment tools and applied them in a case study in the area of translation and terminology leaning. The study, briefly described in this paper, has been a well succeeded one. However, we expect to foster further knowledge on the factors that should be changed during the teaching-learning process, by detecting and suggesting improvements. For that we will also reflect on what should be done to achieve better results when using ePortfolios, and consider other tools and approaches to enhance this process, such as social networks

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