Search results for "POWER"
showing 10 items of 5099 documents
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.
Subjektīvo un objektīvo akomodācijas novērtēšanas metožu rezultātu salīdzinājums
2019
Maģistra darbs uzrakstīts latviešu valodā uz 66 lapaspusēm, kuru skaitā ir 22 attēli, 11 tabulas un 58 literatūras atsauces. Pētījuma mērķis: salīdzināt subjektīvo un objektīvo akomodācijas novērtēšanas metožu rezultātus. Metode: refrakcijas korekcijas, pozitīvo un negatīvo akomodācijas rezervju un akomodācijas viegluma mērījumi tika veikti 12 emetropiem pētījuma dalībniekiem. Akomodācijas testi veikti gan binokulāros, gan arī monokulāros apstākļos. Secinājumi: ar objektīvo metodi iegūtie rezultāti ir salīdzināmi ar subjektīvo, klīnisko metožu rezultātiem un sniedz vēl papildus informāciju arī par akomodācijas atbildes dinamisko komponenti.
Aktivoituminen henkilökohtaisena päätöksentekoprosessina aikuissosiaalityössä
2012
Tutkielmassani käsittelen aktivoitumista voimaantumisprosessin osana, johon henkilö kiinnittyy henkilökohtaisen päätöksentekoprosessin myötä. Päätöksentekoprosessin viitekehyksenä tarkastelen suomalaista aktiivista sosiaalipolitiikkaa 1990-luvun alusta lähtien. Tavoitteenani on tuoda uutta sisältöä nykyiseen aikuissosiaalityön aktivointikeskusteluun tarkastelemalla aktivoitumista ei pelkästään sosiaalipoliittisesta ja rakenteellisesta näkökulmasta, vaan ensisijaisesti yksilön subjektiivisena päätöksentekoprosessina. Ensisijainen tavoitteeni on tutkia miten aktivoituminen rakentuu aikuissosiaalityön kontekstissa. Tutkielman tarkoituksena on tuottaa kriittistä tietoa ja uusia näkökulmia sosia…
"Jonku kanssa niinku jutteli ja yhessä teki" : tutkimus kuntouttavan työtoiminnan vaikutuksista 17-29 -vuotiaan kainuulaisen nuoren elämässä
2012
Tutkimukseni tarkoituksena on selvittää kuntouttavan työtoiminnan vaikutuksia nuoren elämässä nuoren oman henkilökohtaisen kokemuksen ja kuntouttavan työtoiminnan ohjaajien näkökulmasta Kainuun alueella. Lisäksi tutkimuksessa kartoitetaan lähtötilannetta, josta nuori ohjautuu kuntouttavaan työtoimintaan sekä selvitetään, mikä merkitys ohjauksella on kuntouttavan työtoiminnan kokonaisuudessa. Taustateoriana tässä tutkimuksessa ovat ihmisen toiminnallisuuteen, sosiaaliseen toimintaan ja empowerment-käsitteen sisältöön sekä syrjäytymiseen kulttuurisena ilmiönä liittyvät ilmiöt. Lisäksi on tarkasteltu keskusteluja aktivointipolitiikasta nuoriin kohdistuvan työllisyys- ja sosiaalipolitiikan jäse…
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…
Searching for a robust strategy for minimizing alkali chlorides in fluidized bed boilers during burning of high SRF-energy-share fuel
2015
Abstract To meet the increasing volume of waste to be treated via energy recovery, high SRF-energy-share fuel is being fired in conventional waste-to-energy facilities. In this work, corrosion related risk during firing of 70 e-% share (target fuel) is studied and compared against the base case fuel containing 50 e-% share. Cl and S concentration is highest in the target fuel as a direct result of increasing the proportion of SRF in the fuel mixture. Br, Zn and Pb showed the same trend. Meanwhile, the concentration of Na, K, Al and Si are highly dependent on the type of the SRF fired. The corrosion risk of the base and target fuels are analyzed using the composition of the fine aerosol frac…
The inhibitory effect of long-term associative representation on working memory
2020
Studies on how long-term memory affects working memory (WM) have found that long-term memory can enhance WM processing. However, these studies only use item memory as the representation of long-term memory. In addition to item memory, associative memory is also an essential part of long-term memory. The associative memory and item memory involve different cognitive mechanisms and brain areas. The purpose of the present study was to investigate how associative memory affects WM processing. Before the WM task, participants were asked to store 16 pairs of dissimilar pictures into long-term memory. The participants would obtain the associative memory of these pairs of pictures in the long-term …
Muscle Function Differences between Patients with Bulbar and Spinal Onset Amyotrophic Lateral Sclerosis. Does It Depend on Peripheral Glucose?
2021
Background: One of the pathogenic mechanisms of ALS disease is perturbed energy metabolism particularly glucose metabolism. Given the substantial difference in the severity and the prognosis of the disease, depending on whether it has a bulbar or spinal onset, the aim of the study was to determine metabolic differences between both types of ALS, as well as the possible relationship with muscle function. Materials and Methods: A descriptive, analytical, quantitative, and transversal study was carried out in hospitals and Primary Care centers in the region of Valencia, Spain. Fasting glucose and alkaline phosphatase (AP) levels in venous blood, muscle percentage, fat percentage, muscle streng…
Disintegration of Wastewater Activated Sludge (WAS) for Improved Biogas Production
2018
Due to rapid urbanization, the number of wastewater treatment plants (WWTP) has increased, and so has the associated waste generated by them. Sustainable management of this waste can lead to the creation of energy-rich biogas via fermentation processes. This review presents recent advances in the anaerobic digestion processes that have led to greater biogas production. Disintegration techniques for enhancing the fermentation of waste activated sludge can be apportioned into biological, physical and chemical means, which are included in this review; they were mainly compared and contrasted in terms of the ensuing biogas yield. It was found that ultrasonic- and microwave-assisted disintegrati…
Commercial Biogas Plants: Lessons for Ukraine
2020
Ukraine has enough biomass resources for biogas production. However, this energy potential is not used sufficiently. This research is aimed at examining the current experience of commercial biogas systems in the Europe Union and its adaptation for Ukraine. Special attention was paid to economic indicators, such as specific investment costs, production costs (biogas, biomethane, and electricity), and incentives. Using statistical data for the European Union and Ukraine, the biogas potential for Ukraine (based on European experience) was determined. The economic competitiveness of biogas production was evaluated compared to alternatives, such as photovoltaic, wind power, biomass, conventional…