Search results for "Power"

Time-Frequency Characteristics of In-Home Radio Channels Influenced by Activities of the Home Occupant

2019

While aging is a serious global concern, in-home healthcare monitoring solutions are limited to context-aware systems and wearable sensors, which may easily be forgotten or ignored for privacy and comfort reasons. An emerging non-wearable fall detection approach is based on processing radio waves reflected off the body, who has no active interaction with the system. This paper reports on an indoor radio channel measurement campaign at 5.9 GHz, which has been conducted to study the impact of fall incidents and some daily life activities on the temporal and spectral properties of the indoor channel under both line-of-sight (LOS) and obstructed-LOS (OLOS) propagation conditions. The time-frequ…

Balance Sheet of Screening for Diabetic Retinopathy With a Mobile Non-Mydriatic Digital Camera in Burgundy, France

2009

Purpose: To assess the economic balance-sheet of screening for diabetic retinopathy (DR) with a mobile non-mydriatic digital camera in Burgundy, France, in a public health and economic perspective.Methods: The 72 lowest medicalised areas of Burgundy were visited. Retinal images were obtained with a non-mydriatic camera. To construct an economic model, we used available data on the prevalence of diabetes in Burgundy, the efficiency of the screening, the number of screened DR, blindness probability according to DR grading, the efficiency of laser therapy, the diabetic characteristics (gender, age, income, professional status and life expectancy) and medical costs induced by our campaign.Resul…

Exploring the Ideal of Dialogue by Taking into Account Both an Observed Interaction Session and the Participants’ Views on the Interaction

2014

Published version of an article in the journal: Interchange. Also available from the publisher at: http://dx.doi.org/10.1007/s10780-014-9221-7 The focus of the article is on the ideal of using dialogue to promote contact between school and home. The aim was to explore this ideal by taking into account both an observed interaction session and how the participants perceive this interaction. The study draws on data from observation of a meeting about a pupil with special needs and his transition from lower to upper secondary school. The participants were the pupil, the mother and father, the special needs teacher, the school counsellor, the school psychology counsellor and the special needs co…

El futuro del derecho como lucha contra la idolatría tecnológica

2019

The main challenge that Law will have to face in the near future is the defense of human being against the uncontrolled power of technology in different spheres: ecology versus the becoming of a new geological age: the Anthropocene; the finances, versus speculation and taxes fraud; biolaw, versus the transhumanist challenge; the rights to privacy and no manipulation versus GAF( Google, Amazon, Facebook). El reto principal al que debera hacer frente el derecho en el futuro es la defensa del ser humano frente al poder incontrolado de la tecnologia en diferentes campos: la ecologia, frente a la aparicion de una nueva era geologica: el Antropoceno; las finanzas, frente a la especulacion y el fr…

Formare i genitori in un quartiere "a rischio": il senso di un'esperienza

2006

La disabilità e l'empowerment bi-professionale di assistente sociale e counselor in una prospettiva di Social Innovation

2013

Il saggio pone agli estremi della riflessione il soggetto diversamente abile da un lato e la Social Innovation come modello emergente del fare politica sociale. Analizza i due nuclei concettuali attraverso gli sviluppi procedurali che potrebbero determinarsi nell’integrazione professionale delle competenze proprie dell’assistente sociale e del counselor. La ricerca condotta attraverso le interviste semistrutturate a testimoni significativi che svolgono l’una o l’altra delle professioni esaminate presso associazioni di Terzo settore della Sicilia occidentale, si sforza di individuare gli elementi di criticità a quelli che potenzierebbero le reciproche competenze dei professioni sti in questi…

Quantitative Rotor Broken Bar Evaluation in Double Squirrel Cage Induction Machines under Dynamic Operating Conditions

2013

Advanced monitoring techniques leading to fault diagnosis and prediction of induction machine faults, operating under non-stationary conditions have gained strength because of its considerable influence on the operational continuation of many industrial processes. In case of rotor broken bars, fault detection based on sideband components issued from currents, flux, instantaneous control or power signals under different load conditions, may fail due to the presence of inter-bar currents that reduce the degree of rotor asymmetry, especially for double squirrel cage induction motors. But the produced core vibrations in the axial direction, can be investigated to overcome the limitation of the …

An overview of a novel LC resonant device able to improve Power Quality in active and passive distribution networks

2004

Nowadays power distribution systems are under a rapid evolution. The widespread penetration of distributed generation is bringing about new operating conflicts, which are adding to traditional power quality issues. The paper aims to analyse the performance of a new LC device able to improve power quality in electrical distribution systems, even in presence of distributed generation units. The different possible applications of the device are shown and the performances are proved by means of computer simulation. The first experimental results are also presented.

Transparency in transactive energy at distribution level

2017

A recent report from the German Energy Agency analyzes the possible introduction of the blockchain technology in energy transactions in power distribution. The issue deserves attention since the extensive digitalization of business models puts new challenges to utilities in the power sector. The German decision makers in the energy field claim that blockchain appears as a close perspective and, at the same time, the Gartner hypecycle puts this technology at the peak of inflated expectations in 2016. Diffuse perception however provides hints for further investigation on the topic. This paper provides insight into the problem of peer-to-peer energy exchange from a technical perspective, provi…

Distributed optimal power flow for islanded microgrids: An application to the Smart Polygeneration Microgrid of the Genoa University

2016

In this work, the application of an original distributed optimal power flow method to test a microgrid in the Savona area, Italy is proposed. The microgrid shows different types of Distributed Energy Resources (DERs) and is connected to the main grid through a fixed power bus. Due to the high computational speed, the applied distributed Optimal Power Flow can be performed almost in real time, i.e. every 5 minutes or less. The operating solution found for generators, simply using local information, corresponds to a suboptimal condition with reduced losses, bus voltages and line currents within constrained intervals. The distributed optimization algorithm is iterative, but also fast. It is ba…