Pedro S. Ferreira

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The Internet of Things (IoT) aims at bridging the gap between realworld business processes and information systems. Supply chain management is one of the major application areas that can benefit from the IoT. When attached to physical items, the IoT technologies such as RFID and sensor networks transform objects of the supply chain into smart items. These(More)
The definition, prevalence, classification and clinical relevance of anomalous origin of coronary arteries (AOCA) are still the subject of debate. Most international series estimate its prevalence at 1-2% but we found values ranging from 0.3 to 5.6% in the literature. The prevalence in our population was 0.54%, absence of the left main coronary artery being(More)
Noncompaction of the ventricular myocardium (NVM) is a rare congenital disease caused by an arrest in normal myocardial embryogenesis, leading to persistence of numerous prominent trabeculations which communicate with the left ventricle. It was first described as a congenital condition affecting children, but several cases have been reported of late(More)
Endocarditis is a rare and serious complication of brucellosis and is the main cause of death in this pathology. Diagnosis requires a high level of suspicion and is based on the association of epidemiological, clinical and serological elements. Echocardiography plays a crucial role in early diagnosis, as well as in identifying predisposing heart disease and(More)
Aortic valve stenosis can be complicated by gastrointestinal bleeding from angiodysplasia. A deficiency of high molecular weight multimers of von Willebrand factor (vWF) (type 2A von Willebrand disease) provides the link between this association, which is known as Heyde syndrome. Aortic valve replacement corrects the vWF abnormalities with long-term(More)
This communication describes a virtual reality technology application in the construction-training domain. A prototype was developed that serves as a didactic tool for civil engineering students of disciplines concerned with building construction. Geometric modeling and virtual reality techniques are used on the visual simulation of construction processes(More)
The concept of value has a great relevance in the definition and implementation of a performance management system in the context of cooperate networked production organisations. These new forms of organizations are, in many cases, still lacking suitable performance measures. Based on this idea, this paper we will discuss the problem of performance(More)
Sabotaging behavior and decision-making during ontogeny in herbivorous insects remain largely underappreciated. Insects that use hosts bearing articulated laticifers would be expected to cut trenches to deactivate this plant defense. Contrary to this expectation, larvae of Danaus erippus display vein cutting when feeding on Asclepias curassavica, a host(More)
Normally, academic applications of computer-aided design in construction provide a visual presentation of the final state of the project and they are not able to produce changes in the geometry following the construction process. It was developed a didactic prototype that allows physical changes in a building component. This prototype illustrates the(More)
The use of virtual reality techniques in the development of educational applications brings new perspectives to the teaching of subjects related to the field of civil construction. In order to obtain models, which would be able to visually simulate the construction process of two types of construction work, the research turned to the techniques of geometric(More)