Search results for "De Man"
showing 10 items of 69 documents
Towards Positive Energy Districts: Energy Renovation of a Mediterranean District and Activation of Energy Flexibility
2023
The paper presents the analysis of energy retrofitting, integration of renewable energy and activation of energy flexibility in a cluster of buildings in the surroundings of a port on the Mediterranean Sea in Southern Italy, with the aim of checking the potential for it to achieve the status of positive energy district (PED). The objective of this study is to improve the contemporaneity between local energy generation and energy demand and reduce CO2eq emissions by considering signals that reflect the environmental variability of the electricity grid, through flexibility solutions applied to the HVAC system. The proposed scenarios are based on the dynamic simulation of the district and anal…
La respuesta del sistema de Naciones Unidas ante la situación de crisis prolongada en Haití
2016
Haití se ha erigido en un factor de inestabilidad regional que ha derivado en su consideración por parte del Consejo de Seguridad de las Naciones Unidas como una amenaza a la paz y a la seguridad internacionales a lo largo de los últimos 25 años. Este artículo pretende analizar la importancia de la actuación internacional llevada a cabo en Haití, así como si la respuesta del sistema de las Naciones Unidas ante las crisis haitianas ha garantizado unas condiciones de paz y estabilidad que han servido de base para importantes avances en otros ámbitos. Haiti has emerged as a factor of regional instability that led to its consideration by the United Nations Security Council as a threat to peace …
Voltage-Based Droop Control of Electric Vehicles in Distribution Grids under Different Charging Power Levels
2021
If left uncontrolled, electric vehicle charging poses severe challenges to distribution grid operation. Resulting issues are expected to be mitigated by charging control. In particular, voltage-based charging control, by relying only on the local measurements of voltage at the point of connection, provides an autonomous communication-free solution. The controller, attached to the charging equipment, compares the measured voltage to a reference voltage and adapts the charging power using a droop control characteristic. We present a systematic study of the voltage-based droop control method for electric vehicles to establish the usability of the method for all the currently available resident…
Effect of Demand Side Management on the Operation of PV-Integrated Distribution Systems
2020
In this new era of high electrical energy dependency, electrical energy must be abundant and reliable, thus smart grids are conducted to deliver load demands. Hence, smart grids are implemented alongside distributed generation of renewable energies to increase the reliability and controllability of the grid, but, with the very volatile nature of the Distributed Generation (DG), Demand Side Management (DSM) helps monitor and control the load shape of the consumed power. The interaction of DSM with the grid provides a wide range of mutual benefits to the user, the utility and the market. DSM methodologies such as Conservation Voltage Reduction (CVR) and Direct Load Control (DLC) collaborate i…
A new low cost power line communication solution for smart grid monitoring and management
2018
Modern smart grids require the improvement of measurement and communication infrastructures of distribution networks, at both medium voltage (MV) and low voltage (LV) levels. Distributed sensing and measurement systems are needed to provide all necessary data for grid monitoring, control and management, as well as for the implementation of a number of smart functionalities, such as remote control of distributed generators (DGs), real time analysis of power flows, automatic meter reading (AMR), demand side management (DSM), grid automation and so on [1]-[6]. Acquired network data include typical electrical network quantities and status variables (such as powers, voltages, currents, switches …
Complex rogue wave in the fiber optics
2016
This manuscript presents the generation of complex rogue waves related to nonlinear instabilities occurring through the propagation of light in standard optical fibers. Linear and nonlinear physical phenomena involved are first listed, in particular some of them by analogy with the field of hydrodynamics. The different forms of rogue waves induced by the modulation instability process are then presented. They are also known as "breathers", and they are obtained by solving the nonlinear Schrödinger equation. From these exact solutions, various experimental systems were designed by means of numerical simulations based on two rogue-wave excitation methods. The first one is an exact generation …
Terapia electroconvulsiva de continuación/mantenimiento como estabilizador del ánimo: Estudio de cohorte retrospectivo en espejo de un periodo de 23 …
2021
La terapia electroconvulsiva (TEC) es un tratamiento eficaz y seguro, tanto en la depresión unipolar como en la bipolar, así como en la manía fármacorresistente. Sin embargo, su efecto es limitado en el tiempo, ya que las tasas de recaída y recurrencia en el primer año son elevadas, de hasta el 50-60%. Estas se van a producir fundamentalmente en los primeros 6 meses tras la interrupción del tratamiento con TEC, a pesar de que se mantenga un tratamiento farmacológico óptimo. Generalmente, el perfil clínico de los pacientes con trastornos del humor que son derivados a tratamiento con TEC se caracteriza por la refractariedad o mala tolerancia al tratamiento farmacológico y tendencia a la croni…
Repercusión del programa de mantenimiento con metadona en las oficinas de farmacia de la provincia de Albacete
2002
Introducción: las oficinas de farmacia pueden colaborar en la dispensación de metadona. El farmacéutico debe desarrollar un papel cada vez más importante en la prevención y la promoción de las drogodependencias, proporcionando información sobre drogas.Objetivos: conocer el motivo por el cual participan los farmacéuticos en el Programa de Mantenimiento con Metadona. Grado de satisfacción de los farmacéuticos que co¬laboran.Población y método: todas las oficinas de farmacia colegiadas en la provincia de Albacete hasta mayo de 2000, con independencia de la acreditación o no de los farmacéuticos para la dispensación de clorhidrato de metadona dentro del Programa de Manteni¬miento con Metadona. …
La mesura de l'ús de les llengües en els mitjans telemàtics
2020
La consolidació de l'entorn digital i totes les seues modalitats de comunicació ha ampliat les possibilitats d'interacció i, per tant, els àmbits d'ús de les llengües. Com a adaptació a aquesta nova realitat, en aquesta aproximació metodològica plantegem la combinació de diferents tècniques no reactives: explotació de fonts secundàries, observació sistemàtica, i mystery shopping. Les fonts d'observació directa ens permeten mesurar de manera efectiva l'ús de les llengües en la comunicació telemàtica. Els autors ho han aplicat específicament en l'administració local i en empreses de serveis. En l'àmbit administratiu, a més, això ens ha servit per a desenvolupar un índex global de presència de…
Building Automation and Control Systems and Electrical Distribution Grids: A Study on the Effects of Loads Control Logics on Power Losses and Peaks
2018
Growing home comfort is causing increasing energy consumption in residential buildings and a consequent stress in urban medium and low voltage distribution networks. Therefore, distribution system operators are obliged to manage problems related to the reliability of the electricity system and, above all, they must consider investments for enhancing the electrical infrastructure. The purpose of this paper is to assess how the reduction of building electricity consumption and the modification of the building load profile, due to load automation, combined with suitable load control programs, can improve network reliability and distribution efficiency. This paper proposes an extensive study on…