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Publicações

2005

Locating and Sizing Bank-Branches by Opening, Closing or Maintaining Facilities

Autores
Monteiro, MSR; Fontes, DBMM;

Publicação
Operations Research Proceedings 2005, Selected Papers of the Annual International Conference of the German Operations Research Society (GOR), Bremen, September 7-9, 2005

Abstract

2005

Editorial

Autores
Pinto Ferreira, JJ; Vernadat, F;

Publicação
International Journal of Computer Integrated Manufacturing

Abstract

2005

Towards a workflow-based integration architecture for business networking

Autores
Ferreira, DMR; Ferreira, JJP;

Publicação
Business Process Management Journal

Abstract
Purpose - The purpose of this paper is to show how workflow management can be applied in the context of business networking. Design/methodology/approach - The paper looks at workflow management systems (WfMSs) as an enterprise integration tool and, as such, it shows that WfMS require an appropriate integration infrastructure. The paper then describes how a WfMS that supports business networking can be built. Findings - It is found that business networking requires a decentralized, peer-to-peer (P2P) integration infrastructure. On the other hand, it is found that it is possible to develop a generic and reusable workflow engine. Both components are then integrated in order to come up with a solution that supports business networking. Research limitations/implications - Issues concerning information and document management are not addressed. Neither mechanisms of storage and retrieval of exchanged documents, nor the format/structure of those documents are specified. Practical implications - The paper assumes that enterprises will be willing to build up a P2P network where they will conduct their business-to-business (B2B) exchanges. Then, the proposed solution would allow their business processes to be linked without requiring tight coupling between their information systems. Originality/value - The paper is useful to IT strategists and researchers dealing with WfMS, B2B integration architectures and applications of P2P technology. © Emerald Group Publishing Limited.

2005

Short in-fibre Bragg grating structure for simultaneous measurement of strain and temperature

Autores
Frazao, O; Melo, M; Romero, R; Marques, PVS; Araujo, FM; Ferreira, LA; Santos, JL;

Publicação
17th International Conference on Optical Fibre Sensors, Pts 1 and 2

Abstract
The study of a single short length Bragg grating for sensing applications is presented. The dependences of the central wavelength, reflected optical power and spectral width of a 250 mu m length grating on strain and temperature are analyzed. The obtained results indicate the feasibility of this novel sensing head for simultaneous measurement of strain and temperature.

2005

Identification of monoclonal proteins in serum: A comparison of acetate, agarose gel and capillary electrophoresis

Autores
Guimaraes, C; Ramalho, R; Ramos, J; Marinho, A; Oliveira, B; Caudeias, J;

Publicação
CLINICA CHIMICA ACTA

Abstract

2005

Identification of bilinear systems using an iterative deterministic-stochastic subspace approach

Autores
dos Santos, PL; Ramos, JA; de Carvalho, JLM;

Publicação
2005 44th IEEE Conference on Decision and Control & European Control Conference, Vols 1-8

Abstract
In this paper we introduce a new identification algorithm for MIMO bilinear systems driven by white noise inputs. The new algorithm is based on a convergent sequence of linear deterministic-stochastic state space approximations, thus considered a Picard based method. The key to the algorithm is the fact that the bilinear terms behave like white noise processes. Using a linear Kalman filter, the bilinear terms can be estimated and combined with the system inputs at each iteration, leading to a linear system which can be identified with a linear-deterministic subspace algorithm such as MOESP, N4SID, or CVA. Furthermore, the model parameters obtained with the new algorithm converge to those of a bilinear model. Finally, the dimensions of the data matrices are comparable to those of a linear subspace algorithm, thus avoiding the curse of dimensionality.

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