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Publicações

2013

Business Community Management

Autores
Almeida, R; Carneiro, LM; Sa, A; Ferreira, PS; Fornasiero, R;

Publicação
Intelligent Non-hierarchical Manufacturing Networks

Abstract
This chapter on business community (BC) management presents the BUILD module of the Net-Challenge methodology whose objective is to provide the conceptual background and methodological guidance for organizations that want to create and manage BCs (BC building) that are supported by advanced information and communication technology (ICT) tools. The extensive use of social networking applications is promoted, including the applications developed by the Net-Challenge project and existing standard tools, such as LinkedIn, Facebook and Twitter. These BCs are business environments that comprise a significant number of organizations (mostly small-and medium-enterprises (SMEs)), where trust is developed between its members and communication mechanisms are established. For each phase of the BC lifecycle, the conceptual background, methods, guidelines, best practices and business processes are proposed to support organizations implementing the activities and initiatives necessary to ensure the desired performance. © 2013 by John Wiley & Sons, Inc.

2013

BFT Selection

Autores
Shoker, A; Bahsoun, JP;

Publicação
Networked Systems - First International Conference, NETYS 2013, Marrakech, Morocco, May 2-4, 2013, Revised Selected Papers

Abstract
This paper presents the first BFT selection model and algorithm that can be used to choose the most convenient protocol according to the BFT user (i.e., an enterprise) preferences. The selection algorithm applies some mathematical formulas to make the selection process easy and automatic. The algorithm operates in three modes: Static, Dynamic, and Heuristic. The Static mode addresses the cases where a single protocol is needed; the Dynamic mode assumes that the system conditions are quite fluctuating and thus requires runtime decisions, and the Heuristic mode uses additional heuristics to improve user choices. To the best of our knowledge, this is the first work that addresses selection in BFT. © 2013 Springer-Verlag.

2013

Local PWV and Other Hemodynamic Parameters Assessment - Validation of a New Optical Technique in an Healthy Population

Autores
Pereira, T; Santos, IS; Oliveira, T; Vaz, P; Pereira, T; Santos, H; Pereira, HC; Almeida, V; Cardoso, JMR; Correia, CMBA;

Publicação
BIOSIGNALS

Abstract
Presently the interest in non-invasive devices for monitoring the cardiovascular system has increased in importance, especially in the diagnosis of some pathologies. The proposed optical device reveals an attractive instrumental solution for local pulse wave velocity (PWV) assessment and other hemodynamic parameters analysis, such as Augmentation Index (AIx), Subendocardial Viability Ratio (SEVR), Maximum Rate of Pressure Change (dP/dtmax) and Ejection Time Index (ETI). These parameters allow a better knowledge on the cardiovascular condition and management of many disease states. Two studies were performed in order to validate this technology. Firstly, a comparative test between the optical system and a gold-standard in PWV assessment was carried out. Afterwards, a large study was performed in 131 young subjects to establish carotid PWV reference values as well as other hemodynamic parameters and to find correlations between these and the population characteristics. The results allowed the use of this new technique as a reliable method to determine these parameters. For the total of subjects values for carotid PWV vary between 3-7.69 m s-1 a clear correlation with age and smoking status was found out. The Aix varies between -6.15% and 11.46% and exhibit a negative correlation with heart, and dP/dtmax parameter shows a significant decrease with age.

2013

Complexity Metrics for ClassSheet Models

Autores
Cunha, J; Fernandes, JP; Mendes, J; Saraiva, J;

Publicação
COMPUTATIONAL SCIENCE AND ITS APPLICATIONS - ICCSA 2013, PT II

Abstract
This paper proposes a set of metrics for the assessment of the complexity of models defining the business logic of spreadsheets. This set can be considered the first step in the direction of building a quality standard for spreadsheet models, that is still to be defined. The computation of concrete metric values has further been integrated under a well-established model-driven spreadsheet development environment, providing a framework for the analysis of spreadsheet models under spreadsheets themselves.

2013

Figure-of-eight cavity fiber laser based torsion sensor

Autores
Ferreira, MS; Santos, JL; Mergo, P; Frazao, O;

Publicação
8TH IBEROAMERICAN OPTICS MEETING AND 11TH LATIN AMERICAN MEETING ON OPTICS, LASERS, AND APPLICATIONS

Abstract
A torsion active sensor based on a figure-of-eight configuration is presented. The interferometric fiber loop mirror, composed by a section of photonic crystal fiber, also acts as a sensing element. When torsion is applied over a range of 180 degrees, a sensitivity of 7.13 pm/degree is achieved. Besides, this configuration can also be used to measure optical power variations and it presents low sensitivity to temperature.

2013

What Makes a Working Paper in Economics Publishable? A Tale from the Scientific Periphery

Autores
Teixeira, AAC;

Publicação
JOURNAL OF SCHOLARLY PUBLISHING

Abstract
Research on scientific production and publications in the field of economics has positively boomed in the last few years. However, hardly any attention has been dedicated to the production of working papers and the consequences they may have within the institutions where they are produced. This paper provides a detailed analysis of the working papers produced and published from an institution that is relatively peripheral in terms of its production of research in economics. It mainly explores the probability of the working papers being published in peer-reviewed journals. Through the use of an extensive series of these working papers, produced between 1985 and the end of 2005, and through the estimation of a logistic regression model, it was concluded that the probability of international publication increases significantly when the working paper is recent and co-written with a researcher from a foreign institution. Such evidence suggests that for success in the 'publish or perish' world of scientific research, one has to be integrated into an international scientific network.

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