2016
Autores
Pires, A; Costa, L; Putnik, GD; Ávila, P;
Publicação
International Journal of Business Excellence
Abstract
In the context of a distributed/agile/virtual enterprise (D/A/VE) and due to the large number of potential candidate resources, it is important to make a selection of those that will give more guarantees in terms of success of this cooperation and bring better performance to D/A/VE. There are several projects of D/A/VE with different approaches to the selection process. Considering the functionalities of the resources selection model of our project, the main objective of this paper is to present the development of a prototype/demonstrator tool to support it. As result a tool, named SelecE A/VV0, was developed and providing following features: pre-selection ofresources with and without integration of the value analysis (VA), and final selection of resources. This tool supports the development of BMVEARM selection model and permits the validation of the importance of VA integration in the final performance of the resources system selected. Copyright © 2016 Inderscience Enterprises Ltd.
2016
Autores
deMouraOliveira, PBD; Freire, H; Solteiro Pires, EJS;
Publicação
SOFT COMPUTING
Abstract
The grey wolf optimization algorithm is proposed to design proportional, integrative and derivative controllers using a two degrees of freedom control configuration. The control system is designed in order to achieve good set-point tracking and disturbance rejection performance. The design is accomplished by minimizing an aggregated cost function based on the time-weighted absolute error integral, subjected to robustness constraints. The control system robustness levels are prescribed in terms of the vector margin and maximum complementary sensitivity function values. Simulation results are presented for several common systems dynamics and compared with the ones obtained with a particle swarm optimization algorithm.
2016
Autores
Morgado, L; Almeida, A; Vilela, A; Pires, B; Cardoso, M; Paredes, H; Fonseca, B; Martins, P; Peixinho, F; Santos, A;
Publicação
2016 15TH INTERNATIONAL CONFERENCE ON UBIQUITOUS COMPUTING AND COMMUNICATIONS AND 2016 INTERNATIONAL SYMPOSIUM ON CYBERSPACE AND SECURITY (IUCC-CSS)
Abstract
Learning Management Systems (LMS) provide minimal support for educational use of virtual worlds. Integration efforts assume the educators are inside the virtual world, providing hooks to services in the external LMS, to setup and manage virtual world activities. We present the inverse approach, enabling educators to setup and manage virtual world activities using the traditional LMS Web interface as an integral part of the overall educational activities of a course. In our approach, the LMS enables the teacher/trainer to setup, control, track, and store virtual world activities and its elements. It is the result of a joint effort by academic and corporate teams, implemented in the Formare LMS for OpenSimulator and Second Life Grid virtual world platforms. We explain how the Multis architecture can be used for integration, with concrete cases, an approach that can be implemented in other LMS and virtual world platforms, to overcome the limitations of existing systems for organizational management of e-learning activities.
2016
Autores
Pedroso, JP; Cunha, S; Tavares, JN;
Publicação
International Transactions in Operational Research
Abstract
This paper presents a class of packing problems where circles may be placed either inside or outside other circles, the whole set being packed in a rectangle. This corresponds to a practical problem of packing tubes in a container. Before being inserted in the container, tubes may be put inside other tubes in a recursive fashion. A variant of the greedy randomized adaptive search procedure is proposed for tackling this problem, and its performance is assessed in a set of benchmark instances.
2016
Autores
Adão, T; Magalhães, L; Peres, E;
Publicação
SpringerBriefs in Computer Science
Abstract
This chapter presents the first stage of the procedural modelling methodology addressed in this book, which is capable of generating domus—ancient roman houses—considering rectangular constraint shapes, through the combination of an ontological schema—extended to support some elements of the roman architecture—and a treemap-based procedural modelling process, that is responsible for creating the geometry according to the rules that define the buildings. © The Author(s) 2016.
2016
Autores
Fernandes, JD; Crispim, J;
Publicação
PROCEEDINGS OF THE 3RD INTERNATIONAL CONFERENCE ON PROJECT EVALUATION (ICOPEV 2016)
Abstract
This paper describes the process of formulation and validation of a synthetic risk network model for the Brazilian military shipbuilding industry. This model is composed of risk events and their potential causes that will be the basis of the process of identification and analysis of future risks on similar projects. This process involved an extensive literature review to collect and list an initial catalogue of risks, causes and related effects, followed by an analysis to summarise and schematically group the risks. Then, the Delphi method with a panel of experts from the Brazilian Navy was used to analyse and assess the proposed model.
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