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The measurement of blood flow velocities using either conventional color flow imaging (CFI), or more recent vector-Doppler or blood speckle tracking (BST) approaches are all hampered by regions of signal dropouts due to clutter filtering, as well as potentially high variance depending on the SNR in a given scenario. The aim of this work is to describe and demonstrate a fast processing pipeline for...
Data sharing in Personal Clouds blurs the lines between on-line storage and content distribution with a strong social component. Such social information may be exploited by researchers to devise optimized data management techniques for Personal Clouds. Unfortunately, due their proprietary nature, data sharing is one of the least studied facets of these systems. In this work, we present the first study...
The aim of this article is to apply the methodology of genetic algorithms to the packing and Strip-packing problems. In both problems, the objective is the optimization of the position of a number of rectangular shapes on a base surface, in order to minimize the waste of material. Due to the difficulty of these problems, they are NP-Comptete problems, we use a heuristic to solve them, and in particular...
In this work we confront the job shop scheduling problem by means of Genetic Algorithms. Our contribution is mainly the generation of a heuristic initial population from domain specific knowledge provided by a probabilitic method. Experimental results show that a Genetic Algorithm that uses a heuristic initial population outperforms not only the same algorithm when using a random initial population,...
This paper presents a handheld ultrasound probe which is integrated with sensors to measure force and pose (position/orientation) information. Using an integrated probe like this, one can relate ultrasound images to spatial location and create 3D ultrasound maps. The handheld device can be used by sonographers and also easily be integrated with robot arms for automated sonography. The handheld device...
This paper presents a new Artificial Bee Colony algorithm for solving the capacitated vehicle routing problem. The main novel characteristic of the proposed approach relies upon an efficient way of coordinating, for each group of bees, a well-defined focus of work. In the algorithm, we provide two specializations namely diversification and intensification where the former is controlled by the employed...
The rhetoric over the rate with which state-sponsored or state-endorsed cyber attacks has grown dramatically in the past years. Increasing dependence on information communication technologies by both state and non-state actors; compounded further by the low-cost of entry and the challenge of attribution within the cyber domain have all but assured that this phenomenon would continue in the foreseeable...
The capacitated vehicle routing problem is a common logistic problem in many industries. We present an analysis of the initial solution algorithm and perturbation solution effects on the final quality of an Iterated Local Search (ILS). The main conclusion of the work is that the best results are obtained by the combination of various perturbation methods. The importance of the initial solution is...
Users demand evermore advanced and increased capabilities in their devices, but the corresponding infrastructure deployment is often rejected due to the visual impact and ecological footprint that this entails. "Vodafone Single RAN Active Antenna" is a revolutionary innovation that makes possible the Best Mobile Broadband Networks reducing visual impact and carbon emissions, whilst also...
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