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Acquisition and Processing of Ventricular Structures from the M-Mode Echocardio...
João Pedro Estima de Oliveira; Pedro H. H. Guedes de OliveiraThis work describes a system for M-mode echocardiogram processing. In order to characterize the left ventricle functions and dimensions, the system detects in real time the ventricular structures and processes them off-line for parameter extraction. (...)keywords: medical instrumentation; signal processing; tracking algorithms; M-mode echocardiographyPh.D., 1988more info: http://opac.ua.pt/F/?func=fin...
Programming and Simulation of Programmable Logic Controllers - a Methodology an...
José Luis Costa Pinto de Azevedo; João Pedro Estima de OliveiraProgrammable Logic Controllers (PLC) play an important role in the industrial environment, being used in many different situations. Taking a common concept the many existing PLC manufactorers use proprietary programming tools and/or software packages implementing, some times, usual languages in a idiosyncratic way. (...)Keywords: programmable logic controllers; grafcet; ladder diagrams; simulation; p...
Virtualization of Programmable Logic Controllers
Jorge Augusto Fernandes Ferreira; João Pedro Estima de OliveiraProgrammable Logic Controllers (PLC) are widely used in industry, This implies that more and more people must be trained in order to obtain enough knowledge to develop, mantain and upgrade applications involving PLCs, from simple motor commands to sophisticated process controllers. (...)Keywords: programmable logic controllers; ladder diagrams; virtual PLC; virtualization; object oriented programming; prog...
Important problem features for the promotion of onceptual understanding in intr...
José Manuel Oliveira; João Pedro Estima de OliveiraThis article describes an investigation in which a set of problems, specifically designed to develop conceptual understanding in introductory Electronics, were used as a teaching and learning strategy in an active learning setting. Some of the suggested problems have similarities with those presented by concept inventories, in that they are designed to address common students’ misconceptions. The goal, however,...
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