Cookies Policy
The website need some cookies and similar means to function. If you permit us, we will use those means to collect data on your visits for aggregated statistics to improve our service. Find out More
Accept Reject
  • Menu
Publications

2011

Experiment@Portugal

Authors
Restivo, MT; Alves, JC; Cardoso, A;

Publication
iJEP

Abstract

2011

Experimental evaluation of distributed middleware with a virtualized Java environment

Authors
Carvalho, NA; Bordalo, J; Campos, F; Pereira, J;

Publication
Proceedings of the 6th Workshop on Middleware for Service Oriented Computing, MW4SOC 2011 - Co-located with the ACM/IFIP/USENIX 12th International Middleware Conference, Middleware 2011

Abstract
The correctness and performance of large scale service oriented systems depend on distributed middleware components performing various communication and coordination functions. It is, however, very difficult to experimentally assess such middleware components, as interesting behavior often arises exclusively in large scale settings, but such deployments are costly and time consuming. We address this challenge with Minha, a system that virtualizes multiple JVM instances within a single JVM while simulating key environment components, thus reproducing the concurrency, distribution, and performance characteristics of the actual system. The usefulness of Minha is demonstrated by applying it to the WS4D Java stack, a popular implementation of the Devices Profile for Web Services (DPWS) specification. © 2011 ACM.

2011

Single minute exchange of die. A case study implementation

Authors
Moreira, AC; Pais, GCS;

Publication
Journal of Technology Management and Innovation

Abstract
The Single Minute Exchange of Die (SMED), a process-based innovation originally published in the mid 1980s, involves the separation and conversion of internal setup operations into external ones. Although very important in increasing productivity SMED experiences are not very widespread in Ibero-America. Accordingly, this article has as its main objective to contribute to the literature addressing this less studied topic: SMED. A case study was put forward emphasizing a process-based view. The main finding is that by implementing SMED techniques the firm managed to eliminate w astefulness and non - added value activities worth around 360000 €, which is about 2% of the firm's sales volume. © Universidad Alberto Hurtado, Facultad de Economía y Negocios.

2011

DroidJacket: An android-based application for first responders monitoring

Authors
Colunas, MFM; Amaral Fernandes, JM; Oliveira, IC; Silva Cunha, JP;

Publication
Proceedings of the 6th Iberian Conference on Information Systems and Technologies, CISTI 2011

Abstract
The Vital Responder project aims at exploring the synergies between wearable technologies, scattered sensor network, intelligent building technology and precise localization services to provide secure, reliable and effective first-response systems in emergency scenarios. One of the components required in this technological setting is the ability to monitor biosignals from first responders in the field. In this paper we present a mobile monitoring system called DroidJacket to address the Vital Responder requirements. DroidJacket uses a Android-based smartphone as a base station for vital signs acquired with the Vital Jacket® garment, enabling visualization and simple real time processing. © 2011 AISTI.

2011

Building a No Limit Texas Hold'em Poker Agent Based on Game Logs Using Supervised Learning

Authors
Teofilo, LF; Reis, LP;

Publication
AUTONOMOUS AND INTELLIGENT SYSTEMS

Abstract
The development of competitive artificial Poker players is a challenge to Artificial Intelligence (AI) because the agent must deal with unreliable information and deception which make it essential to model the opponents to achieve good results. In this paper we propose the creation of an artificial Poker player through the analysis of past games between human players, with money involved. To accomplish this goal, we defined a classification problem that associates a given game state with the action that was performed by the player. To validate and test the defined player model, an agent that follows the learned tactic was created. The agent approximately follows the tactics from the human players, thus validating this model. However, this approach alone is insufficient to create a competitive agent, as generated strategies are static, meaning that they can't adapt to different situations. To solve this problem, we created an agent that uses a strategy that combines several tactics from different players. By using the combined strategy, the agentgreatly improved its performance against adversaries capable of modeling opponents.

2011

A real time, wearable ECG and blood pressure monitoring system

Authors
Ferreira Marques, FA; Ribeiro, DMD; Colunas, MFM; Silva Cunha, JP;

Publication
Proceedings of the 6th Iberian Conference on Information Systems and Technologies, CISTI 2011

Abstract
In this paper, a wearable medical device for Electrocardiogram (ECG) and blood pressure monitoring is presented. Its basis is a validated and certified existent medical device. This device was evolved in order to allow new physiological signal monitoring and real time assessment of blood pressure levels by adding a photoplethismography (PPG) probe and the incorporation of new algorithms in an online interface. The device presents accuracies of 94.6% for systolic blood pressure and 92.3% for systolic blood pressure when compared with reference values obtained from a commercial electronic Sphygmomanometer. © 2011 AISTI.

  • 3545
  • 4495