50 research outputs found
A Game-theory Analysis of Charging Stations Selection by EV Drivers
We address the problem of Electric Vehicle (EV) drivers' assistance
through Intelligent Transportation System (ITS). Drivers of EVs that are low in battery may ask a navigation
service for advice on which charging station to use and which route
to take. A rational driver will follow the received advice, provided
there is no better choice
i.e., in
game-theory terms, if such advice corresponds to a Nash-equilibrium
strategy.
Thus, we model the problem as a game: first we propose a
congestion game, then a game with congestion-averse utilities,
both admitting at least
one pure-strategy Nash equilibrium. The
former represents a practical scenario with a high level of realism,
although at a high computational price. The latter neglects some
features of the real-world scenario but it exhibits very low
complexity, and is shown to provide results that, on average,
differ by 16% from those obtained with the former approach.
Furthermore, when drivers value the trip time most, the average
per-EV performance yielded by the Nash
equilibria and the one attained by solving a
centralized optimization problem that minimizes the EV trip time
differ by 15% at most.
This is an important result, as minimizing this quantity implies reduced road traffic congestion
and energy consumption, as well as higher user
satisfaction
La provincia de Córdoba en un escenario de generación distribuida bajo un sistema de feed in tariff
En primer lugar se contextualiza el concepto de Generación Distribuida desarrollando cuatro aspectos que lo configuran: las Energías Renovables No Convencionales como fuente primaria, la Generación Distribuida y su impacto general, las Energías Renovables No Convencionales en un mercado eléctrico competitivo y los sistemas de comercialización o intercambio de energía en un esquema de Generación Distribuida. Posteriormente se configura un escenario básico evolutivo para la provincia de Córdoba, se determinan valores de Feed In Tariff y se analiza su eventual impacto en las tarifas de usuarios finales. Se efectúa un análisis de sensibilidad de las tarifas de energía y de los costos de instalación sobre la Feed In tariff.First The Distributed Generation concept is contextualized developing four aspects that make it up:
Non-Conventional Renewable Energies as a primary source; Distributed Generation and their overall impact; Non-Conventional Renewable Energies in a competitive electricity market and marketing systems or energy exchange in DG scheme. Later an evolutionary basic scenario for the province of Córdoba is set, values FIT rates are determined and analyzed their possible impact on the tariff of end users. A sensitivity analysis of energy tariffs and installation costs on the Feed in Tariff is made.Tema 7: Uso eficiente y racional de la energía. Políticas y economía energética.Facultad de Arquitectura y Urbanism
La provincia de Córdoba en un escenario de generación distribuida bajo un sistema de feed in tariff
En primer lugar se contextualiza el concepto de Generación Distribuida desarrollando cuatro aspectos que lo configuran: las Energías Renovables No Convencionales como fuente primaria, la Generación Distribuida y su impacto general, las Energías Renovables No Convencionales en un mercado eléctrico competitivo y los sistemas de comercialización o intercambio de energía en un esquema de Generación Distribuida. Posteriormente se configura un escenario básico evolutivo para la provincia de Córdoba, se determinan valores de Feed In Tariff y se analiza su eventual impacto en las tarifas de usuarios finales. Se efectúa un análisis de sensibilidad de las tarifas de energía y de los costos de instalación sobre la Feed In tariff.First The Distributed Generation concept is contextualized developing four aspects that make it up:
Non-Conventional Renewable Energies as a primary source; Distributed Generation and their overall impact; Non-Conventional Renewable Energies in a competitive electricity market and marketing systems or energy exchange in DG scheme. Later an evolutionary basic scenario for the province of Córdoba is set, values FIT rates are determined and analyzed their possible impact on the tariff of end users. A sensitivity analysis of energy tariffs and installation costs on the Feed in Tariff is made.Tema 7: Uso eficiente y racional de la energía. Políticas y economía energética.Facultad de Arquitectura y Urbanism
La provincia de Córdoba en un escenario de generación distribuida bajo un sistema de feed in tariff
En primer lugar se contextualiza el concepto de Generación Distribuida desarrollando cuatro aspectos que lo configuran: las Energías Renovables No Convencionales como fuente primaria, la Generación Distribuida y su impacto general, las Energías Renovables No Convencionales en un mercado eléctrico competitivo y los sistemas de comercialización o intercambio de energía en un esquema de Generación Distribuida. Posteriormente se configura un escenario básico evolutivo para la provincia de Córdoba, se determinan valores de Feed In Tariff y se analiza su eventual impacto en las tarifas de usuarios finales. Se efectúa un análisis de sensibilidad de las tarifas de energía y de los costos de instalación sobre la Feed In tariff.First The Distributed Generation concept is contextualized developing four aspects that make it up:
Non-Conventional Renewable Energies as a primary source; Distributed Generation and their overall impact; Non-Conventional Renewable Energies in a competitive electricity market and marketing systems or energy exchange in DG scheme. Later an evolutionary basic scenario for the province of Córdoba is set, values FIT rates are determined and analyzed their possible impact on the tariff of end users. A sensitivity analysis of energy tariffs and installation costs on the Feed in Tariff is made.Tema 7: Uso eficiente y racional de la energía. Políticas y economía energética.Facultad de Arquitectura y Urbanism
Genome-wide activity of unliganded estrogen receptor-\u3b1\ua0 in breast cancer cells
Estrogen receptor-\u3b1 (ER\u3b1) has central role in hormone-dependent
breast cancer and its ligand-induced functions have been extensively
characterized. However, evidence exists that ER\u3b1 has functions that
are independent of ligands. In the present work, we investigated the
binding of ER\u3b1 to chromatin in the absence of ligands and its functions
on gene regulation. We demonstrated that in MCF7 breast cancer
cells unliganded ER\u3b1 binds to more than 4,000 chromatin sites.
Unexpectedly, although almost entirely comprised in the larger group
of estrogen-induced binding sites, we found that unliganded-ER\u3b1
binding is specifically linked to genes with developmental functions,
compared with estrogen-induced binding. Moreover, we found that
siRNA-mediated down-regulation of ER\u3b1 in absence of estrogen is
accompanied by changes in the expression levels of hundreds of
coding and noncoding RNAs. Down-regulatedmRNAs showed enrichment
in genes related to epithelial cell growth and development.
Stable ER\u3b1 down-regulation using shRNA, which caused cell growth
arrest, was accompanied by increased H3K27me3 at ER\u3b1 binding
sites. Finally, we found that FOXA1 and AP2\u3b3 binding to several sites
is decreased upon ER\u3b1 silencing, suggesting that unliganded ER\u3b1
participates, together with other factors, in the maintenance of the
luminal-specific cistrome in breast cancer cell