3 resultados para 133-825

em CiencIPCA - Instituto Politécnico do Cávado e do Ave, Portugal


Relevância:

10.00% 10.00%

Publicador:

Resumo:

This chapter provides a broad look at the Portuguese process of agencification in the last two decades. As with most of the remaining chapters in this book, we cover the basics by describing the administrative landscape, its changes in organizational make-up, the delicate balance between control and autonomy in the ministry-agency relationship, perceptual changes in efficiency and performance measurement in public management, based on a comprehensive survey (COBRA survey of the CRIPO research group) sent to all public-sector organizations under public law with some degree of autonomy (see Chapter 1, Table 1.1). Portugal is undergoing the most pervasive politico-economic crisis in its short democratic history. The administrative mapping conducted in 2007 which served as the basis for the administration of the COBRA survey is already undergoing change.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Pectus excavatum is the most common deformity of the thorax and usually comprises Computed Tomography (CT) examination for pre-operative diagnosis. Aiming at the elimination of the high amounts of CT radiation exposure, this work presents a new methodology for the replacement of CT by a laser scanner (radiation-free) in the treatment of pectus excavatum using personally modeled prosthesis. The complete elimination of CT involves the determination of ribs external outline, at the maximum sternum depression point for prosthesis placement, based on chest wall skin surface information, acquired by a laser scanner. The developed solution resorts to artificial neural networks trained with data vectors from 165 patients. Scaled Conjugate Gradient, Levenberg-Marquardt, Resilient Back propagation and One Step Secant gradient learning algorithms were used. The training procedure was performed using the soft tissue thicknesses, determined using image processing techniques that automatically segment the skin and rib cage. The developed solution was then used to determine the ribs outline in data from 20 patient scanners. Tests revealed that ribs position can be estimated with an average error of about 6.82±5.7 mm for the left and right side of the patient. Such an error range is well below current prosthesis manual modeling (11.7±4.01 mm) even without CT imagiology, indicating a considerable step forward towards CT replacement by a 3D scanner for prosthesis personalization.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Money laundering operations faced multiple changes and become more complex, in line with financial innovation. Often, regulation does not follow that innovation, giving opportunity to take advantage of thes e gaps in less lawful activities. The bitcoin is a virtual currency that has grown significantly, both in value and in volume of transactions, in recent years. The dimension of the phenomenon led to an increasing surveillance from the financial supervisors . We search for evidence of the relationship between money laundering and transactions carried out in bitcoins, the most popular virtual currency at the moment. We analyse the official publications relating the two themes, academic research and the notori ety within the international media. The attitudes toward the bitcoin are diverse, but all share concerns about its future impact. Some sparse evidence indicates that bitcoin may be an opportunity for money laundering, however more data is required.