This paper considers smooth convex optimization problems with many functional constraints. To solve this general class of problems we propose a new stochastic perturbed augmented Lagrangian method, called SGDPA, where...
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Background and Objective: Videodermoscopy is the gold standard in melanoma diagnosis. A new research trend aims to support specialists’ work by automating this examination method, but most research focuses on develop...
Background and Objective: Videodermoscopy is the gold standard in melanoma diagnosis. A new research trend aims to support specialists’ work by automating this examination method, but most research focuses on developing detectors to replace dermatologists. Our study aims to present a novel idea which focuses on supporting the examination process instead of completely automating it. Instead of detecting and classifying all naevi each time, our approach focuses on full screening at the first visit and shortening the examination at subsequent visits. During the following examinations, images of all naevi are taken by supporting staff and are compared with previously taken images using feature-matching or co-registration-based algorithms. An unmatched naevus needs to be checked by the specialist, meaning that a new naevus appeared or an old one had changed. Methods: The similarity between images (ranging from 0% to 100%) was obtained with characteristic points searching (ORB method) and co-registration-based methods. No dataset presenting changes of naevi over time exists, so augmenting the images from PH2 and HAM10000 datasets was required to simulate the time flow. Results: The decision bound was set, so the true positive rate of each method was equal to 99%, giving the specificity of ORB equal to 97% (PH2) and 89% (HAM10000). Similar tests were performed using a co-registration algorithm giving specificity equal to 23% (PH2) and 19% (HAM10000). Conclusions: We believe that employing our approach will allow supporting staff to perform screening without experts’ help, decreasing examination time and costs and increasing the accessibility of dermoscopic examinations.
The hand-eye calibration problem represents a major challenge in robotics, arising from the widespread usage of robotic systems along with robot-mounted sensors. Briefly, consisting of estimating the position and orie...
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This work deals with the problem of distribution of cooling water in an evaporation process. The aim is to develop a Real-Time optimisation (RTO) tool which improves the resource efficiency by supplying the optimal wa...
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In this proposal, a predictive control scheme is considered for PMSG based wind turbine system in order to maximize power extraction. The main goal is to maintain the turbine tip-speed ratio (and consequently the powe...
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Postural monitoring in wheelchair users is a topic of growing interest. The detection of changes in the sitting patterns of these patients may serve to detect changes in their functional status and be able to adapt re...
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In this paper, a novel strategy for swinging up an inverted pendulum is proposed. The strategy combines an energy-based control law with an event triggering condition to minimize transmissions, protect actuators and s...
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This paper introduce the modeling and simulation tool EcosimPro and the possibility in the new version 4 of using object orientation in its modeling language called EL (Ecosimpro Language ) which is the official langu...
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This paper introduce the modeling and simulation tool EcosimPro and the possibility in the new version 4 of using object orientation in its modeling language called EL (Ecosimpro Language ) which is the official language of The European Space Agency (ESA). Also shows the power that the use of classes gives to EcosimPro regarding other simulation environments.
Advances in communication, information technology, and computation have led to a rapid change of today's world. Actuation, communication, sensing, and control are becoming ubiquitous. While this offers many possib...
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Vibration isolation systems with nonlinear stiffness under sinusoidal excitation exhibit unwanted jump phenomena and superharmonics when they are lightly damped. These characteristics can be suppressed by linear visco...
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