Search results for "efficien"
showing 10 items of 3014 documents
Competence Acquisition through Autonomy in the Self-regulated Learning Process
2012
La autorregulación académica se ha establecido como una de las competencias básicas en el sistema educativo bajo el nuevo paradigma del Espacio Europeo de Enseñanza Superior. La autorregulación del aprendizaje no es una capacidad mental, como la inteligencia, o una habilidad, como la lectura, sino un proceso autodirigido a través del cual los aprendices transforman sus capacidades mentales en habilidades académicas. En la investigación que aquí se presenta, se consideran específicamente las dimensiones motivacionales (orientación intrínseca y extrínseca, valor otorgado a las tareas, locus de control para el aprendizaje, autoeficacia para el aprendizaje y ansiedad ante las evaluaciones) diri…
Joint Optimization of Sensor Selection and Routing for Distributed Estimation in Wireless Sensor Networks
2014
Avances recientes en redes inalámbricos de sensores (WSNs, Wireless Sensor Networks) han posibilitado que pequeños sensores, baratos y con recursos limitados tanto en sensado, comunicación, como en computación, sean desplegados a gran escala. En consecuencia, las WSNs pueden ofrecer diversos servicios en importantes aplicaciones para la sociedad. Entre las varias restricciones que aparecen en el diseño de WSNs, tales como la limitación en energía disponible, procesamiento y memoria, la limitación en energía es muy importante ya que en muchas aplicaciones (ej., monitorización remota de diferentes entornos, edificios administrativos, monitoreo del hábitat, los incendios forestales, la atenció…
Dialoga loma tiesas spriešanā
2015
Elektroniskā versija nesatur pielikumus
Effects of the air density value on a wind generator electricity production capability
2016
The paper main issue is the evaluation of the influence of the air density value on the electricity production capability of a wind generator. Two different density air mathematical models, where the density has not a constant value, are here taken into account and compared in terms of reliability, accuracy and computational burden. Evaluations are carried out thanks to a horizontal axis wind generator full model built by the Authors in Matlab/Simulink environment. Simulation results are compared with real data.
A Self-powered Ambient Light Power Measurement Platform with Time-domain Readout
2021
Internet of Things (IoT) provides more and more adequate infrastructures for many applications and advanced services. This scenario promotes the ability to satisfy the growing demand for innovative measuring systems, increasingly popular consisting of intelligent nodes, totally wireless, easy to install, and that requires the least possible maintenance. In this context, this paper aims to contribute to state of the art with an energy-autonomous and battery-free measurement platform designed to measure the ambient light power when its level exceeds the sensitivity threshold. The measurement platform utilizes a single transducer to scavenge energy and concurrently measure the ambient light in…
Nutrition-Related Diseases in the Medicines Reimbursement System of Latvia
2013
Latvijā ambulatorajai ārstēšanai paredzēto zāļu un medicīnisko ierīču iegādes izdevumu kompensācijas sistēma darbojas stingri ierobežotu valsts budžeta līdzekļu apstākļos, līdz ar to aktuāls kļūst jautājums par papildus iespēju izvērtēšanu līdzekļu izlietojuma optimizācijai, ņemot vērā arī preventīvo pasākumu nozīmīgumu. Pētījuma mērķis ir identificēt uztura atkarīgās slimības zāļu iegādes izdevumu kompensācijas sistēmā un novērtēt iespējas noteikt papildinošo uztura programmu potenciālo efektivitāti. Mērķa sasniegšanai izmantotas teorētiskās izpētes metodes (normatīvo dokumentu un speciālās literatūras analīze) un empīriskās izpētes metodes (statistikas datu vākšana, apkopošana un analīze)…
Stress Assessment of Vestibular Endurance Training for Civil Aviation Flight Students Based on EEG
2021
AbstractObjectiveThe main goal of our study is to clarify the EEG characteristics of the stress response caused by vestibular endurance training under the real conditions.MethodsTen pilot trainees received a series of acute anti-vertigo training stimulations on the rotary ladder while recording electroencephalographic data (64 electrodes). Afterwards, the subject’s anti-vertigo ability was tested for the best performance after 1 month of training, and verifying whether it is relating to the EEG signals we collected before.Results(1) The absolute power ofαwaves in the C3 and C4 regions is same as the difference between 1 min before and 2 min after stimulation, and their activity is enhanced …
Efficacy of clove oil and ethanol against Saprolegnia sp. and usability as antifungal agents during incubation of rainbow trout Oncorhynchus mykiss (…
2013
Inhibitory concentrations of clove oil and ethanol against growth of Saprolegnia sp. hyphae were screened by a modification of the hemp (Cannabis sativa L.) seed MicroPlate (HeMP) method and their usability as antifungal agents during incubation of rainbow trout Oncorhynchus mykiss eggs was tested. In vitro experiment showed that in continuous static exposure, clove oil at 100 mg L−1 significantly inhibited the growth of Saprolegnia, whereas in bath exposures, clove oil at 500 mg L−1 had no significant effect at any exposure time tested (15, 60 and 240 min), but clove oil at 10 000 mg L−1 significantly inhibited growth at all exposure times. Clove oil and ethanol treatments had no visible e…
Photonic crystal intermediate reflector in micromorph tandem solar cells
2011
Experimental and numerical evidences are presented which show that the efficiency of silicon based tandem solar-cells can be increased by incorporating a three-dimensional photonic crystal as an intermediate reflector.
The influence of yeast glycosylated proteins on tannins aggregation in model solution
2004
<p style="text-align: justify;">The incidence of glycosylated yeast proteins on tannins aggregation in model solution was investigated using the spectrophotometric method (absorbance 700 nm). Glycosylated proteins released by two commercial <em>Saccharomyces cerevisiae</em> strains (RC212 and BM 45) during alcoholic fermentation in synthetic media, glycosylated proteins extracted by Peat’s method and industrial glycosylated proteins purified and separated by chromatography on Sepharose Concanavalin A were used to visualize effects on tannins aggregation. Results showed that tannins aggregation was limited by the glycosylated proteins according to their origin and their mod…