3,278 research outputs found
Psicologia e AIDS
No full textPartendo dai dati di una ricerca effettuata presso la cattedra di Allergologia del Policlinico Umberto I di Roma, vengono inquadrate le problematiche emotive e psicologiche più frequenti delle persone in cura per aver contratto il virus. L'obiettivo è quello di far luce su conoscenze realistiche e sulle priorità di questi particolari pazienti per stabilire un intervento psicologico mirato
A Selection Criterion for Lithium-ion Cell Equalisers Based on a Comprehensive Catalogue of Existing Architectures
No full textThis study proposes a selection criterion for the optimal choice of lithium-ion cell equalisers.
To support this selection, a systematic catalogue of existing cell-equaliser circuits was developed, providing a unified description of their operating principles and component requirements. A comprehensive multimedia file hosted in the Journal supplementary material and a concise summary table in the paper accompany this catalogue.
This collection forms the foundation for a subsequent methodological analysis, in which a circuit selection framework is introduced.
The selection criterion is based on five key performance indicators (KPIs) based on: cost, weight, occupied area, equalising efficiency, and equalisation time.
Unlike previous approaches reported in the literature, the proposed method can be easily extended to include additional KPIs, enabling the automatic identification of the most suitable cell-equaliser circuit for a given application sector.
A case study involving forty-four different equalisers identified through a comprehensive literature review demonstrates the applicability and robustness of the proposed KPIs across three representative sectors: aeronautical, marine, and automotive
Telephone counselling on sexual diseases, contraception and andrology
No full textIn: Prakash Kothari (Ed.). Bombay (India
Telephone counselling on sexual diseases, contraception and andrology.
No full textIn: Prakash Kothari (Ed.). Bombay (India
Consulenza telefonica per problemi sessuali, contraccettivi e andrologici: ulteriori dati.
No full textEvaluation of Long-Term Effects of Selective Laser Trabeculoplasty in Patients With Primary Open Angle Glaucoma
No full textPrecis: Data coming from this study suggest that selective laser trabeculoplasty could be a very important tool in the overall management of glaucoma patients at every stages, aiming to better control the visual field deterioration. Purpose: To evaluate selective laser trabeculoplasty (SLT) effectiveness in lowering intraocular pressure (IOP) and in visual field defect progression in eyes affected by primary open angle glaucoma (POAG) at long term follow up. Methods: A retrospective study were conducted with 67 eyes of 67 patients affected by POAG who underwent SLT between 2014 and 2021. Each patient was routinely observed in the Glaucoma Office of Università della Campania Luigi Vanvitelli and underwent a complete eye visit and visual field (VF) test with 30-2 SITA standard automated perimetry (SAP) every 6 months. When both eyes in same patient were treated, only the eye with lower mean deviation (MD) of SAP was included. Patients were observed at 6, 12, 18, 24, 30, 36, 42, 48, 54 months. Results: A mean significant (P<0.01) lower IOP was detected at 6 months (12.92±2.7 mm Hg) ad at 54 months (13.08±2.42 mm Hg) compared to baseline (17.91±4 mm Hg). Mean MD values showed significant (P<0.01) reduction both at 6 month follow up (-0.07±0.21 dB) and at 54 month follow up (-0.3±0.34 dB) demonstrating satisfactory clinical deceleration of the progression of the disease. Mean IOP medical lowering therapy was 1.34±0.9 drugs, showing a significant (P<0.01) decrease 6 months after SLT (0.87±0.85), that remained stable (P= at 54 month follow up (0.9±0.76). Conclusions: The results observed confirm not only the high level of effectiveness of SLT in lowering IOP and reducing the need for topical medications, but also its role in decelerating visual field deterioration in eyes affected by POAG
Iatrogenic ophthalmic artery occlusion after platelet-rich plasma dermal filler documented with ultra-widefield imaging
No full textPurpose: To report a case of iatrogenic ophthalmic artery occlusion (OAO) secondary to platelet-rich plasma (PRP) dermal filler injection for facial rejuvenation documented with ultra-widefield imaging. Methods: Case report. Results: A 45-year-old woman developed a sudden and painful vision loss in the left eye (LE) after a dermal filler injection of PRP in the left glabellar region. She immediately received intravenous corticosteroids with no improvements. Two weeks later a complete ophthalmological examination including visual acuity (VA), fundus examination, ultra-widefield fundus autofluorescence and fluorescein angiography, and optical coherence tomography was performed. A diagnosis of iatrogenic OAO in the LE with profound ocular ischemia was made and VA remained no light perception. Monthly follow-up visits were scheduled to ascertain the onset of any ocular complication. Conclusions: Dermal filler injections of PRP can lead to rare but devastating side effects with permanent visual loss. Considering that there is currently no validated treatment strategy, prevention could be the real key of iatrogenic OAO management
Flextronics: la gestione in outsourcing di attività di produzione attraverso contract manufacturing
No full textNel contributo si descrive il caso di un'impresa con il ruolo di outsourcer nei processi di outsorucing nelle attività di produzione nel ruolo di contract manufacturer, evidenziando i vantaggi per l'impresa outsourcee. Il caso di studio analizzato è di Flextronics, uno dei casi internazionali più conosciuti e di sucesso di contract manufacturing
Real-time smoothing of car-following data through data sensor-fusion techniques
No full textObservation of vehicles kinematics is an important task for many applications in ITS (Intelligent Transportation Systems). It is at the base of both theoretical analyses and application developments, especially in case of positioning and tracing/tracking of vehicles, car-following analyses and models, navigation and other ATIS (Advanced Traveller Information Systems), ACC (Adaptive Cruise Control) systems, CAS and CWS (Collision Avoidance Systems and Collision Warning Systems) and other ADAS (Advanced Driving Assistance Systems). Modern technologies supply low-cost devices able to collect time series of kinematic and positioning data with medium to very high frequency. Even more data can be (almost continually) collected if vehicle-to-vehicle (V2V) communications come true. However, some of the ITS applications (as well as car-following models, on which many ADAS and ACC are based) require highly accurate measures or, at least, smooth profiles of collected data. Unfortunately, even relatively high-cost devices can collect biased data because of many technical reasons and often this bias could lead to unrealistic kinematics, incorrect absolute positioning and/or inconsistencies between vehicles (e.g. negative spacing). As a consequence, data need filtering in most of the ITS applications. To this aim proper algorithms are required and several sensors and sources of data possibly integrated in order to obtain the maximum quality at the minimal cost. This work addresses the previous issues by developing a specific Kalman smoothing approach. The approach is developed in order to deal with car-following conditions but is conceived to take into account also navigation issues. The performances are analysed with respect to real-world car-following data, voluntarily biased for evaluation purposes. Assessment is carried out with reference to different mixtures of sensors and different sensors accuracies
Development and testing of a fully Adaptive Cruise Control system
No full textAdaptive Cruise Control systems have been developed and introduced into the consumer market for over a decade. Among these systems, fully-adaptive ones are required to adapt their behaviour not only to traffic conditions but also to drivers' preferences and attitudes, as well as to the way such preferences change for the same driver in different driving sessions. This would ideally lead towards a system where an on-board electronic control unit can be asked by the driver to calibrate its own parameters while he/she manually drives for a few minutes (learning mode). After calibration, the control unit switches to the running mode where the learned driving style is applied. The learning mode can be activated by any driver of the car, for any driving session and each time he/she wishes to change the current driving behaviour of the cruise control system. The modelling framework which we propose to implement comprises four layers (sampler, profiler, tutor, performer). The sampler is responsible for human likeness and can be calibrated while in learning mode. Then, while in running mode, it works together with the other modelling layers to implement the logic. This paper presents the overall framework, with particular emphasis on the sampler and the profiler that are explained in full mathematical detail. Specification and calibration of the proposed framework are supported by the observed data, collected by means of an instrumented vehicle. The data are also used to assess the proposed framework, confirming human-like and fully-adaptive characteristics
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