Search results for "VDP::Technology: 500"
showing 10 items of 538 documents
A non-stationary MIMO vehicle-to-vehicle channel model based on the geometrical T-junction model
2009
©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. Article also available from publisher: http://dx.doi.org/10.1109/WCSP.2009.5371438 In this paper, we derive a non-stationary multiple-input multiple-output (MIMO) vehicle-to-vehicle (V2V) channel model from the geometrical T-junction model. The propagation environment is assumed to be extremely non-isotropic. The proposed channel model takes into account double…
Home energy management system : a home energy management system under different electricity pricing mechanisms
2014
Masteroppgave i fornybar energi ENE 500 Universitetet i Agder 2014 Peak demand is a severe problem in the electricity grid and it was solved by supply side management in the past. But nowadays the demand side management sources have drawn attention due to the economic and environmental constraints. Demand side management in the domestic sector can play an important role in reducing the peak demand on the power system network. It can help in reducing stress and overloading on the transmission and distribution lines. In many countries there are various demand response programs implemented for industrial and commercial loads. In these programs load control is primarily achieved by various type…
An approach to day ahead forecasting of solar irradiance with an application to energy gain in solar thermal collectors
2014
Masteroppgave i fornybar energi ENE 500 Universitetet i Agder 2014 Today, for the management of energy supply systems forecast information on load and theproduction of meteorology dependent (wind, solar, hydro) generation is ever rising. Solarirradiance forecasting is given a unique priority as it spans over major applications such asmanagement of grids with a high share of photovoltaic generation and thermal power supplysystems relying on solar heat generation. This thesis will address the day ahead prediction of thelocal irradiances intended to be applied for the management of solar assistant systems for heat andhot water supply. The forecast method presented here is based on the statisti…
Measurements of magnetic flux density in rotating machines : development of a calibrated and portable measurement system
2014
Masteroppgave i fornybar energi ENE 500 Universitetet i Agder 2014 Diagnostics of generator poles has traditionally been done by measuring the impedancein each pole and assume that the magnetic ux density is proportional to the impedance.With Hall-sensors it is possible to measure the actual magnetic ux density in each poledirectly. It is also possible to measure the ux density while the machine is runningwhich is not possible with impedance tests. In this project a complete system for makingmeasurements with Hall-sensors has been developed and tested on three generators. Twoof the generators were hydropower generators of 50 and 90 MVA. The measurementsystem is comprised of hall-sensors, po…
Fornøyd med litt men ønsker seg likevel mer : gir nye versjoner av EPJ-system i helse- og omsorgssektoren i kommunene kontinuerlig forbedring?
2016
Masteroppgave i helse- og sosialinformatikk- Universitetet i Agder, 2016 Continuous development in health- and care services leads to the electronic patient record (EPR) systems to become more complex. It is important for municipalities to have systems that work, and acts as a support for workflows of everyday life, so that information regarding the patients are easily accessible and accurate. It is therefore important that new versions of EPR systems are delivered with good quality. This study focuses on municipalities' challenges with developing, testing and implementing new versions of old EPR system in health- and caregiving services. A qualitative study is conductet, with interviews of…
The Developmental Contribution From Mobile Phones Across the Agricultural Value Chain in Rural Africa
2011
Published version of an article from the journal: The Electronic Journal of Information Systems in Developing Countries. Also available fro the publisher: http://www.ejisdc.org/Ojs2/index.php/ejisdc/article/viewFile/849/377 The most widespread information and communication technology (ICT) in developing countries today is the mobile phone. The majority of people in the least developed countries still live in rural areas and their livelihood depends on the primary industries. This study investigates the use of mobile phones among farmers in rural Tanzania in order to supply empirical data on the developmental role of this technology. The results show that the improved access to communication…
Development of net energy ratio and emission factor for quad-generation pathways
2014
Published version of an article in the journal: Energy Systems. Also available from the publisher at: http://dx.doi.org/10.1007/s12667-014-0126-4 The conversion of biomass to four different outputs via gasification is a renewable technology that could reduce the use of fossil fuels and greenhouse gas (GHG) emissions. This study investigates the energy aspects for a new concept of biomass based quad-generation plant producing power, heat, methanol and methane. Circulating fluidized bed gasifier and the gas technology institute (GTI) gasifier technologies are used for this quad-generation process. Two different biomass feedstocks are considered in this study. The net energy ratio for six diff…
Elektronisk meldingsutveksling- et bidrag til å oppfylle Samhandlingsreformens intensjoner om helhetlige, sømløse, koordinerte og trygge tjenester? :…
2014
Masteroppgave i helse- og sosialinformatikk HSI 500 Universitetet i Agder 2014 Project background: Patient information is exchanged between different governmental levels of health care to provide new health level with correct/adequate information. The information exchanged is important in securing a seamless and continuous care. Purpose/problem: This projects objective is to assess the information quality of electronic messages, in particular if the content received meets the recipient’s need of information to customize patient treatment/care. Selection/method: The project made requests to a coordination manager and interaction coordinators in a region, who communicated the projects request…
Ant colony optimisation for planning safe escape routes
2013
Published version of a chapter from the volume: Recent Trends in Applied Artificial Intelligence. Also available on SpringerLink: http://dx.doi.org/10.1007/978-3-642-38577-3_6 An emergency requiring evacuation is a chaotic event filled with uncertainties both for the people affected and rescuers. The evacuees are often left to themselves for navigation to the escape area. The chaotic situation increases when a predefined escape route is blocked by a hazard, and there is a need to re-think which escape route is safest. This paper addresses automatically finding the safest escape route in emergency situations in large buildings or ships with imperfect knowledge of the hazards. The proposed so…
Antecedents and consequences of problematic smartphone use: A systematic literature review of an emerging research area
2021
Abstract This article provides a systematic review of existing research on problematic smartphone use (PSU) to guide other researchers in search of relevant studies, and to propose areas for future research. In total, 293 studies were analyzed leading to the development of an overview model in the field of PSU, presenting findings on demographic factors, explanations for smartphone use and why this use becomes problematic, consequences of PSU, and how such use can be corrected. In addition, we considered in which contexts, with which methods, and with which theoretical lenses this stream of research has been studied to date. Smartphone use is most often explained by the smartphone design, a…