Polytechnic Institute of Lisbon

About: Polytechnic Institute of Lisbon is a education organization based out in Lisbon, Portugal. It is known for research contribution in the topics: Monetary policy & New Keynesian economics. The organization has 261 authors who have published 368 publications receiving 3569 citations. The organization is also known as: Polytechnical Institute of Lisbon.

Sustainable Water Reuse in Portugal

Abstract: Portugal, like most of Mediterranean EU member states, regularly experience severe water supply and demand imbalances, particularly in the summer months. Half of Portugal mainland suffers of water deficit. Tourism is a very important economic activity in Portugal and is pushing water demand particularly in regions suffering of water deficit, like the Algarve. Golf courses are an important tourist factor contributing to water demand rising. A number of golf courses are installed in tourist areas and need high amount of water for irrigation. Water reuse is a very important management strategy in situations of water scarcity. Portugal badly needs to include treated wastewater as a dependable water in the nation water resources management. Safe water reuse requires guidelines. This standard presents guidelines on: water quality, irrigation practice, management of environmental impacts, protection of public and animal health and aspects of control and monitoring.

How to Improve Retrieval Effectiveness on the Web

Abstract: We explore the question of combining link analysis, content analysis and classification-based techniques to improve retrieval performance on the Web. We show the potential of combination and that relatively simple implementation of combination does improve the retrieval performance.

Modifications and improvements on iris recognition

Abstract: Iris recognition is a well-known biometric technique. John Daugman has proposed a method for iris recognition, which is divided into four steps: segmentation, normalization, feature extraction and matching. In this paper, we evaluate, modify and extend John Daugman’s method. We study the images of CASIA and UBIRIS databases to establish some modifications and extensions on Daugman’s algorithm. The major modification is on the computationally demanding segmentation stage, for which we propose a template matching approach. The extensions on the algorithm address the important issue of pre-processing, that depends on the image database, being especially important when we have a non infra-red camera (e.g. a WebCam). For this typical scenario, we propose several methods for reflexion removal and pupil enhancement and isolation. The tests, carried out by our C# application on grayscale CASIA and UBIRIS images, show that our template matching based segmentation method is accurate and faster than the one proposed by Daugman. Our fast pre-processing algorithms efficiently remove reflections on images taken by non infra-red cameras.

Evaluation of the Implementation of PV Feed-In Law in Portugal

Abstract: In April 2008 a new feed-in law for the installation of micro-generation photovoltaic systems took off in Portugal. The program includes a generous feed-in tariff, yearly adjusted depending on the success of the program. The program was accompanied by the introduction of a novel online process for the registration, licensing and inspection of small PV installations that reduces the delay between application and connection to the grid to about 6 months. The aim of this paper is to evaluate the implementation of this new program including an analysis of the payback time and a discussion of the main administrative and technical challenges to the implementation of both the feed-in law and the simplified registration process

Sergei Eisenstein as Seen by Peter Greenaway: A Dialectic Representation of an (Anti-)Great Film Director

Abstract: Peter Greenaway’s recent biopic of the great Russian film director and master of montage Sergei M. Eisenstein, Eisenstein in Guanajuato, forms an important addition to filmic life writing. Greenawa...