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Dissertations / Theses on the topic 'Efficiency of power consumption'

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Published: 28 May 2022
Last updated: 31 July 2025

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1

Tomarchio, Salvatore Gaspare. "Power Switching Converters with very low power consumption and high efficiency for energy savings." Doctoral thesis, Università di Catania, 2013. http://hdl.handle.net/10761/1311.

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The objective of this research is the analysis of power switching converters with targets of very low power consumption and high efficiency for being used in new system for energy savings. Typically, they are implemented as Switching Mode Power Supply (SMPS) modules in different type of applications in both consumer and energy businesses . In particular have been considered power supply systems with output power in the class of low and medium power, in the range from few watts up to hundreds watts. Referring to consumer business, the main fields of application are lighting and home appliances
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2

Tormo, Lluch Carlos. "Energy Efficiency and Power Consumption Improvement of IR Illumination for Surveillance Cameras." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235538.

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The power and energy optimization of a device can lead to a reduced cost, smaller area, better temperature performance, and higher lifetime. Furthermore, in systems that have limited power budget, it allows running simultaneously more functionalities or using features that require higher power demand.Therefore, both from the user and the company perspective, the value of a product increases as the energy optimization improves. For nighttime surveillance video recording, it is common to use infrared illumination to light the targetscene, which draws a significant portion of the total camera ene
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Holtkamp, Hauke Andreas. "Enhancing the energy efficiency of radio base stations." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/9376.

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This thesis is concerned with the energy efficiency of cellular networks. It studies the dominant power consumer in future cellular networks, the Long Term Evolution (LTE) radio Base Station (BS), and proposes mechanisms that enhance the BS energy efficiency by reducing its power consumption under target rate constraints. These mechanisms trade spare capacity for power saving. First, the thesis describes how much power individual components of a BS consume and what parameters affect this consumption based on third party experimental data. These individual models are joined into a component pow
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4

Jayachandran, Krishna K. "STBC-encoded cooperative asynchronous transmissions for transmission energy efficiency." Diss., Online access via UMI:, 2005.

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5

Del, Barga Christopher. "Design and Optimization of a Mobile Hybrid Electric System to Reduce Fuel Consumption." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/76797.

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The high costs and high risks of transporting fuel to combat zones make fuel conservation a dire need for the US military. A towable hybrid electric system can help relieve these issues by replacing less fuel efficient standalone diesel generators to deliver power to company encampments. Currently, standalone generators are sized to meet peak demand, even though peak demand only occurs during short intervals each day. The average daily demand is much less, meaning generators will be running inefficiently most of the day. In this thesis, a simulation is created to help determine an optimal
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6

Nilakantan, Ravishankar. "New power converter topologies for minimizing energy consumption of electronic appliances." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41209.

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The proliferation of electronic equipment that is permanently connected to the grid causes significant parasitic losses. Yet, the design of power supplies for PCs, servers, multi-function printers, etc, is governed by the cost and component specifications at the peak operating point as well as the thermal management of the power supply itself. Most power supplies have lower efficiencies at light loads than at their rated loads. If the unit spends most of its time at the light load operating point, then the energy consumption will be much higher compared to a situation where the power supply is
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Iessa, Hassan. "Concentrating food materials using electrokinetically enhanced filtration (EKEF) : impact on filtration efficiency, quality compounds and power consumption." Thesis, University of Newcastle upon Tyne, 2016. http://hdl.handle.net/10443/3483.

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Countries around the world are suffering from many problems caused by the misuse of their resources either by using non-renewable ones or destroying the valuable features of the resources that are available. Some of the most important challenges facing humanity are related to food and energy security. Food security includes many aspects besides providing people with an adequate amount of safe and healthy food; it also includes improving food processing to produce acceptable, high quality food products with reduced losses of nutrients, carbon footprint and using fewer resources in the productio
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8

Tran, Martina. "Energy Consumption Optimizations for 5G networks." Thesis, Uppsala universitet, Signaler och System, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-395146.

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The importance of energy efficiency has grown alongside awareness of climate change due to the rapid increase of greenhouse gases. With the increasing trend regarding mobile subscribers, it is necessary to prevent an expansion of energy consumption via mobile networks. In this thesis, the energy optimization of the new radio access technology called 5G NR utilizing different sleep states to put base stations to sleep when they are not transmitting data is discussed. Energy savings and file latency with heterogeneous and super dense urban scenarios was evaluated through simulations with differe
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9

Kanwal, Kapil. "Increased energy efficiency in LTE networks through reduced early handover." Thesis, University of Bedfordshire, 2017. http://hdl.handle.net/10547/622832.

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Long Term Evolution (LTE) is enormously adopted by several mobile operators and has been introduced as a solution to fulfil ever-growing Users (UEs) data requirements in cellular networks. Enlarged data demands engage resource blocks over prolong time interval thus results into more dynamic power consumption at downlink in Basestation. Therefore, realisation of UEs requests come at the cost of increased power consumption which directly affects operator operational expenditures. Moreover, it also contributes in increased CO2 emissions thus leading towards Global Warming. According to research,
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10

Nathuji, Ripal. "Mechanisms for coordinated power management with application to cooperative distributed systems." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24646.

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Thesis (Ph.D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Schwan, Karsten; Committee Co-Chair: Yalamanchili, Sudha; Committee Member: Lee, Hsien-Hsin Sean; Committee Member: Loh, Gabriel; Committee Member: Madisetti, Vijay; Committee Member: Owen, Henry
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Karampour, Mazyar. "MEASUREMENT AND MODELLING OF ICE RINK HEAT LOADS." Thesis, KTH, Tillämpad termodynamik och kylteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-61330.

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Ice rinks are among the most energy intensive public buildings in developed and developing countries. According to a research on Swedish ice rinks; a typical ice rink consumes approximately 1185 MWh/year which leads to more than 300 GWh/year for the 342 Swedish indoor ice rinks. The refrigeration system is usually the largest consumer by 43% average share of the total energy consumption.  To decrease the refrigeration system energy demand, there are a variety of energy efficiency techniques known and available but the key to select the best ones is finding the major heat loads on the ice sheet
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12

Fróes, Lima Carlos Alberto 1963. "Revolução tecnológica na indústria de energia elétrica com smart grid, suas consequências e possibilidades para o mercado consumidor residencial brasileiro." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264667.

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Orientador: Gilberto De Martino Jannuzzi<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-21T01:56:13Z (GMT). No. of bitstreams: 1 FroesLima_CarlosAlberto_D.pdf: 5418325 bytes, checksum: b0c14191595c15d33ea2a9082c7c0429 (MD5) Previous issue date: 2012<br>Resumo: Este trabalho parte da premissa que as tecnologias para smart grid se apresentam como oportunidade para criar um novo negócio de energia. Todos os stake-holders devem ser envolvidos, e organizados para construir ou modernizar a rede de energia em seus asp
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Palamure, Shanuka Dilhani. "Energy efficiency and carbon dioxide emissions across different scales of iron ore mining operations in Western Australia." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2016. https://ro.ecu.edu.au/theses/1936.

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During the last two decades, Western Australian iron ore mining industry experienced an exponential production growth arising from increased global demand for steel. The upturn in the iron ore price and considerably lower production cost encouraged extensive mining and consequently high-grade ore reserves were gradually depleted. Despite the energy-intensive nature of mining, high profitability motivated the mining companies to extract marginal-grade deposits with additional processing requirements, which increased energy consumption and ultimately increased the cost of iron ore production. Th
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Wang, Huajun. "Interplay between capacity and energy consumption in C-RAN transport network design." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-204939.

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Current mobile network architecture is facing a big challenge as the traffic demands have been increasing dramatically these years. Explosive mobile data demands are driving a significant growth in energy consumption in mobile networks, as well as the cost and carbon footprints [1]. In 2010, China Mobile Research Institute proposed Cloud Radio Access Network (C-RAN) [2], which has been regarded as one of the most promising architecture to solve the challenge of operators. In C-RAN, the baseband units (BBU) are decoupled from the remote radio units (RRH) and centralized in one or more locations
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Dusza, Björn [Verfasser]. "Context-Aware Power Consumption Modeling for Energy Efficient Mobile Communication Services / Björn Dusza." Aachen : Shaker, 2014. http://d-nb.info/105034216X/34.

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16

Kpondjo, Nadia. "Modélisation de la compétitivité industrielle." Thesis, Paris 10, 2016. http://www.theses.fr/2016PA100127.

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Cette thèse traite de la notion de compétitivité des unités industrielles par l’indicateur de l’efficience obtenu avec la méthode DEA. L’efficience des alumineries de l’industrie de l’aluminium primaire est analysée sur quatre années distinctes 2005, 2009, 2010 et 2012. Les résultats révèlent que ces unités sont globalement peu efficientes techniquement (inefficience de l’ordre de 1 à 5% selon la technologie utilisée et la région) ; leurs combinaisons productives semblent donc peu optimales. De plus, l’inefficience est davantage prononcée au niveau du coût et de l’allocation de leurs ressource
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17

Hong, Sunpyo. "Modeling performance and power for energy-efficient GPGPU computing." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45922.

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The objective of the proposed research is to develop an analytical model that predicts performance and power for many-core architecture and further propose a mechanism, which leverages the analytical model, to enable energy-efficient execution of an application. The key insight of the model is to investigate and quantify a complex relationship that exists between the thread-level parallelism and memory-level parallelism for an application on a given many-core architecture. Two metrics are proposed: memory warp parallelism (MWP), which refers to the number of overlapping memory accesses per co
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18

Noble, Christopher Aaron. "Laboratory-Scale Analysis of Energy-Efficient Froth Flotation Rotor Design." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/76881.

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Froth Flotation is an industrial separation process commonly used in the primary enrichment of run-of-mine mineral material. Over the past 100 years, much of the process's development has come from empirical evolution, rather than fundamental understanding. While many of the governing sub-processes are still poorly understood, the primary influential factors lie within the chemical, equipment, and operational variables unique to each flotation system. This investigation focuses on the phenomenological investigation of the equipment variables, particularly the rotor design, at the laboratory
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19

Tombaz, Sibel. "On the Design of Energy Efficient Wireless Access Networks." Doctoral thesis, KTH, Radio Systems Laboratory (RS Lab), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-144868.

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Wireless access networks today consume 0.5 percent of the global energy. Rapidly growing demand for new services and ubiqutious connectivity, will further increase the energy consumption. This situation imposes a big challenge for mobile operators not only due to soaring cost of energy, but also increasing concern for global warming and sustainable development. This thesis focuses on the energy efficiency issue at the system level and studies how to incorporate energy-awareness into the design of future wireless access networks. The main contributions have been given in the areas of energy eff
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20

Mostowfi, Mehrgan. "Improving the Energy Efficiency of IEEE 802.3az EEE and Periodically Paused Switched Ethernet." Scholar Commons, 2010. http://scholarcommons.usf.edu/etd/3623.

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It is estimated that networked devices consumed about 150 TWh of electricity in 2006 in the U.S. which has cost around $15 billion and contributed about 225 billion lbs of CO 2 to greenhouse gas emissions. About 13.5% of this energy is consumed by network equipment such as switches and routers. This thesis addresses the energy consumption of Ethernet, and designs and evaluates improvements on existing methods to reduce the energy consumption of Ethernet links and switches. Energy Efficient Ethernet (EEE) is an emerging IEEE 802.3 standard which allows Ethernet links to sleep when idle. In thi
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Okumura, Ryota. "Efficient Bi-Directional Communications for Low-Power Wireless Mesh Network." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263789.

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京都大学<br>新制・課程博士<br>博士(情報学)<br>甲第23328号<br>情博第764号<br>新制||情||130(附属図書館)<br>京都大学大学院情報学研究科通信情報システム専攻<br>(主査)教授 原田 博司, 教授 守倉 正博, 教授 大木 英司<br>学位規則第4条第1項該当<br>Doctor of Informatics<br>Kyoto University<br>DFAM
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22

Кійко, В. В. "Оцінка ефективності електроспоживання при специфічних навантаженнях". Thesis, Сумський державний університет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/41388.

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Забезпечення вимог щодо якості електроенергії при специфічних навантаженнях (нелінійні, несиметричні), особливо для енергоємних підприємств з високим ступенем енергоозброєності й автоматизації, підвищує ефективність виробництва. Нормалізація параметрів якості електроенергії в кожному конкретному випадку повинна вирішуватися по-різному, з урахуванням конкретної енергетичної ситуації.
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23

Alnowiser, Abdulaziz Mohammed. "TOWARD ENERGY-EFFICIENT SCHEDULING USING WEIGHTED ROUND-ROBIN AND VM REUSE." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/theses/1303.

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AN ABSTRACT OF THE THESIS OF Abdulaziz M. AlNowiser, for the Master of Science degree in Computer Science, presented on November 1, 2013, at Southern Illinois University Carbondale. TITLE: TOWARD ENERGY-EFFICIENT SCHEDULING USING WEIGHTED ROUND- ROBIN AND VM REUSE MAJOR PROFESSOR: Dr. Michelle M. Zhu In recent years, the rapid evolving Cloud Computing technologies multiply challenges such as minimizing power consumption and meeting Quality-of-Services (QoS) requirements in the presence of heavy workloads from a large number of users using shared computing resources. Powering a middle-sized dat
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Wheeler, Kaitlyn Rose. "Efficient Operation of Diesel Generator Sets in Remote Conditions." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78374.

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Diesel engine and generator sets (gensets) have been extensively used for standby and remote power generation over the past hundred years. Due to their use for standby power, these diesel gensets are designed to operate in conjunction with the grid, which relates to a fixed speed operation with a 60 Hz AC output. For operation in remote conditions, such as military and disaster relief applications, this fixed speed operation results in limiting the power output available from the engine, as well as the overall efficiency of the system. The removal of this grid connectivity requirement coul
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Bomfati, Bruna Martins. "Desempenho de motor diesel com óleo vegetal de Crambe (Crambe abyssinica hochst) pré-aquecido." Universidade Estadual de Ponta Grossa, 2018. http://tede2.uepg.br/jspui/handle/prefix/2511.

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Submitted by Eunice Novais (enovais@uepg.br) on 2018-05-18T19:33:14Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Bruna Martins Bomfati.pdf: 1871828 bytes, checksum: 025d7196b1adc075dc67eda4558cee36 (MD5)<br>Made available in DSpace on 2018-05-18T19:33:14Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Bruna Martins Bomfati.pdf: 1871828 bytes, checksum: 025d7196b1adc075dc67eda4558cee36 (MD5) Previous issue date: 2018-02-27<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Os
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Hähnel, Marcus, Björn Döbel, Marcus Völp, and Hermann Härtig. "Measuring energy consumption for short code paths using RAPL." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-113258.

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Measuring the energy consumption of software components is a major building block for generating models that allow for energy-aware scheduling, accounting and budgeting. Current measurement techniques focus on coarse-grained measurements of application or system events. However, fine grain adjustments in particular in the operating-system kernel and in application-level servers require power profiles at the level of a single software function. Until recently, this appeared to be impossible due to the lacking fine grain resolution and high costs of measurement equipment. In this paper we report
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Rukpakavong, Wilawan. "Energy-efficient and lifetime aware routing in WSNs." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/14497.

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Network lifetime is an important performance metric in Wireless Sensor Networks (WSNs). Transmission Power Control (TPC) is a well-established method to minimise energy consumption in transmission in order to extend node lifetime and, consequently, lead to solutions that help extend network lifetime. The accurate lifetime estimation of sensor nodes is useful for routing to make more energy-efficient decisions and prolong lifetime. This research proposes an Energy-Efficient TPC (EETPC) mechanism using the measured Received Signal Strength (RSS) to calculate the ideal transmission power. This in
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Armada, Ramírez Ferran. "European energy markets integration and its effects on prices and efficiency of electricity producing firms." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/393928.

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In this work we investigate the effect of energy (electricity) market integration in Europe and its effects on electricity prices and efficiency improvements in electricity producing firms. We first describe at detail the electricity sector, the role of electricity markets, the main characteristics of electricity as a commodity as well as the main features of this particular and strategic sector, we speak about the evolution of consumption of electricity in developed countries and particularly in Spain. In the second chapter, we address extensively the most recent round of reforms approved for
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29

Tolbert, Jeremy Reynard. "Energy-efficient digital design of reliable, low-throughput wireless biomedical systems." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45787.

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The main objective of this research is to improve the energy efficiency of low throughput wireless biomedical systems by employing digital design techniques. The power consumed in conventional wireless EEG (biomedical) systems is dominated by digital microcontroller and the radio frequency (RF) transceiver. To reduce the power associated with the digital processor, data compression can reduce the volume of data transmitted. An adaptive data compression algorithm has been proposed to ensure accurate representations of critical epileptic signals, while also preserving the overall power. Furt
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Marr, Bo. "Learning, probabilistic, and asynchronous technologies for an ultra efficient datapath." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31724.

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Thesis (Ph.D)--Electrical and Computer Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Paul Hasler; Committee Co-Chair: David V. Anderson. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Hansen, Ewa. "Centralized Routing for Prolonged Network Lifetime in Wireless Sensor Networks." Licentiate thesis, Västerås : School of Innovation, Design and Engineering, Mälardalen University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-486.

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Chan, wai po Francis. "Conception d’une tête radiofréquence auto adaptative au milieu de propagation pour les applications médicales." Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14052/document.

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L'impédance d'entrée d'une antenne miniature est fortement affectée par des facteurs environnementaux à l'origine de pertes de puissance réduisant l'efficacité énergétique des têtes radiofréquences dans les applications RF, en particulier dans la télémétrie des implants cardiaques. Le but de mes études est de développer une unité de calibration d'impédance d'antenne très faible consommation capable d'adapter toute variation de l'impédance d'entrée de l'antenne à l'impédance de la source radiofréquence. La première partie de mon étude est axée sur la conception au niveau système d'une approche
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Wang, Feng. "Energy Efficient Digital Baseband Modulator for Cable Terminal Systems Targeted on Field Programmable Gate Array." Ohio University / OhioLINK, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1091114767.

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Устименко, Р. О. "Підвищення ефективності системи електропостачання АТ «Слов'янські шпалери-КФТП»". Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/25266.

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Устименко, Р. О. Підвищення ефективності системи електропостачання АТ «Слов'янські шпалери-КФТП» : випускна кваліфікаційна робота : 141 "Електроенеретика, електротехніка та електромеханіка" / Р. О. Устименко ; керівник роботи Б. І. Кулик ; НУ "Чернігівська політехніка", кафедра електричної інженерії та інформаційно-вимірювальних технологій. – Чернігів, 2021. – 24 с.<br>Об’єктом дослідження є система електропостачання підприємства «Слов’янські шпалери – КФТП» Предмет дослідження – параметри режиму роботи діючої системи електропостачання підприємства «Слов’янські шпалери – КФТП» Мета роботи – з
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Natarajan, Hariharan. "Post occupancy energy analysis of the Gwinnett Environmental and Heritage Center." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41214.

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Вань, Ж., та R. Wan. "Основные направления в области энергосбережения и повышения энергоэффективности экономики Китая : магистерская диссертация". Master's thesis, б. и, 2021. http://hdl.handle.net/10995/99986.

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Актуальность данной работы обусловлена тем, что Китай – самая большая развивающаяся страна в мире, и его потребление энергии намного больше, чем в других странах. Энергосбережение и повышение энергоэффективности экономики – это укрепление энергетической и национальной безопасности страны. Повышение энергоэффективности и энергосбережение способствуют снижению потребления природных ресурсов и сокращению вредных выбросов в окружающую среду. Объект исследования – потребление энергетических ресурсов в Китае. Предмет исследования – организационно-экономические отношения в процессе повышения энергоэф
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Ahlefelder, Sebastian. "Kraftstoffverbrauch durch Entnahme von Zapfluft und Wellenleistung von Strahltriebwerken." Aircraft Design and Systems Group (AERO), Department of Automotive and Aeronautical Engineering, Hamburg University of Applied Sciences, 2006. http://d-nb.info/1179514394.

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Zapfluft und Wellenleistung wird den Triebwerken entnommen, um die Energie für beispielsweise die Kraftstoffpumpen, das Inflight Entertainment oder die Flügelvorderkantenenteisung zu erzeugen. Diese Energiegenerierung, hat einen Anstieg des Kraftstoffverbrauches zur Folge. Es hat sich herausgestellt, dass die Stelle der Zapfluftentnahme einen starken Einfluss auf den Gradienten des Brennstoffverbrauches hat. Das Projekt beschäftigt sich mit zwei- und dreiwelligen Turbofantriebwerken und untersucht an ihnen, die Effekte der Leistungsnahmen. Als Simulationssoftware wurde GasTurb 8.0 eingesetzt u
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Fufore, Mohammed Umar. "The relationship between the structure of an economy and its energy intensity." Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/95609.

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University of Stellenbosch Business School<br>ENGLISH ABSTRACT: This study examined the relationship between economic structure and energy intensity in selected developed and developing countries of the world. A methodological and systematic approach was adopted to select the thirty-one countries explored in the study. Therefore, to answer the research questions posed in the study, the Granger Causality Technique and the Augmented Dickey-Fuller (ADF) method were used. This study discovered that the variables examined in the study showed variations. The variations emerged because of diffe
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Dhollande, Dominique. "Amélioration du rendement énergétique d'une série de pompes à anneau liquide." Valenciennes, 1996. https://ged.uphf.fr/nuxeo/site/esupversions/f5e5f57e-5bc9-4af1-80fa-a93cb0d6c8b6.

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Les pompes à anneau liquide sont des machines de compression volumétriques, principalement utilisées en pompe à vide et qui aspirent des gaz jusqu'à des pressions absolues de 30 mbar. Ces pompes possèdent de nombreux avantages mais un faible rendement global par rapport à l'isotherme qui peut descendre jusqu'à 10% et une consommation en eau importante. L'étude qui a été réalisée a permis d'améliorer ces deux derniers points. Apres une modélisation de la puissance absorbée par la méthode des pertes séparées, des axes de recherche ont pu être déterminés. Différentes solutions technologiques ont
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Nasser, Yehya. "An Efficient Computer-Aided Design Methodology for FPGA&ASIC High-Level Power Estimation Based on Machine Learning." Thesis, Rennes, INSA, 2019. http://www.theses.fr/2019ISAR0014.

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Aujourd’hui, des systèmes numériques avancés sont nécessaires pour mettre en œuvre des fonctionnalités complexes. Cette complexité impose au concepteur de respecter différentes contraintes de conception telles que la performance, la surface, la consommation électrique et le délai de mise sur le marché. Pour effectuer une conception efficace, les concepteurs doivent rapidement évaluer les différentes architectures possibles. Dans cette thèse, nous nous concentrons sur l’évaluation de la consommation d’énergie afin de fournir une méthode d’estimation de puissance rapide, précise et flexible. Nou
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Azoidou, Eva. "Battery Lifetime Modelling and Validation of Wireless Building Automation Devices in Thread." Thesis, KTH, Kommunikationsnät, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199957.

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The need for energy eciency in wireless communication is prevalent in all areas,but to an even greater extent in low-power and lossy networks that rely on resourceconstraineddevices. This degree project seeks to address the problem of modellingthe battery lifetime of a duty-cycled node, participating in a wireless sensor networkthat is typically used in smart home and building applications. Modelling inMATLAB combined with experimentation are employed to predict the life expectancyand to validate using a hardware implementation. Various scenarios includingsleepy end devices in a wireless senso
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Nguyen, K. G. (Kien-Giang). "Energy-efficient transmission strategies for multiantenna systems." Doctoral thesis, Oulun yliopisto, 2019. http://urn.fi/urn:isbn:9789526222677.

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Abstract The rapid evolution of wireless networks to meet the requirements of explosive data traffic demand is escalating energy consumption beyond sustainable limits. Consequently, energy efficiency (EE) has emerged as a key performance indicator for future wireless networks to address the increasing concern over greenhouse gas emissions and sustainable economic growth. This thesis studies energy-efficient transmission strategies for multiantenna wireless systems. The aim is to develop linear beamforming techniques maximizing the bit-per-Joule EE metric, focusing on three appealing scenarios:
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Chan, Wai Po Françis. "Conception d'une tête radiofréquence auto adaptative au milieu de propagation pour les applications médicales." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2010. http://tel.archives-ouvertes.fr/tel-00585651.

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L'impédance d'entrée d'une antenne miniature est fortement affectée par des facteurs environnementaux à l'origine de pertes de puissance réduisant l'efficacité énergétique des têtes radiofréquences dans les applications RF, en particulier dans la télémétrie des implants cardiaques. Le but de mes études est de développer une unité de calibration d'impédance d'antenne très faible consommation capable d'adapter toute variation de l'impédance d'entrée de l'antenne à l'impédance de la source radiofréquence. La première partie de mon étude est axée sur la conception au niveau système d'une approche
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Gonzalo, Peces Carlos. "Energy-Efficient Communication with Lightweight M2M in IoT Networks." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-249943.

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OMA’s Lightweight Machine to Machine (LwM2M) is an application protocol for device management in the Internet of Things (IoT) that has been recently published and widely adopted in a lot of projects. The protocol is designed to operate in sensor networks and machine-to-machine environments, where one of the main constraints is the energy consumption since the nodes are usually battery powered. Different strategies to achieve high energy efficiency in IoT networks have been developed, but there is no deep knowledge about the performance of LwM2M operating with them. Moreover, the specification
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Кошкіна, Тетяна Михайлівна. "Підвищення рівня енергоефективності школи за рахунок модернізації системи вентиляції". Master's thesis, Київ, 2018. https://ela.kpi.ua/handle/123456789/26413.

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Пояснювальна записка до магістерської дисертації складається з 6 розділів, та містить 94 сторінок основного тексту. В основному тексті роботи наведено 40 ілюстрацій, 38 таблиць та 25 бібліографічних найменувань за переліком посилань. У дипломному проекті об’єктом дослідження є середня загальноосвітня школа No67 м. Києва. Актуальність теми полягає у використанні систем вентиляції з рекуперацією для зниження втрат енергоресурсів. Метою роботи є полягає у підвищенні рівня енергоефективності будівлі за рахунок впровадження системи вентиляції з рекуперацією. Завдання дослідження – підібрати т
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Shehadeh, Dareen. "Dynamic network adaptation for energy saving." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2017. http://www.theses.fr/2017IMTA0067/document.

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Notre travail s'inscrit dans le cadre des recherches sur le Sleeping mode. Notre contribution est structurée principalement autour deux axes : l'étude et l'évaluation de la performance des processus de mise en veille/réveil des points d'accès et la sélection du nombre minimal des points d'accès dans un milieu urbain dense. Dans un premier temps, nous étudions les processus de mise en veille/réveil des points d'accès dans un scenario classique de réseau domestique. Ce scenario suppose que le point d'accès mis en veille doit détecter la présence d'un utilisateur potentiel dans sa zone de couvert
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Rigotte, Marcio Roberto. "Desempenho de conjunto motor-gerador utilizando biocombustíveis sob cargas variadas." Universidade Estadual do Oeste do Parana, 2014. http://tede.unioeste.br:8080/tede/handle/tede/778.

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Made available in DSpace on 2017-07-10T15:14:29Z (GMT). No. of bitstreams: 1 DissertacaoMarcioRRigotte.pdf: 1614115 bytes, checksum: 34d26d4df31cfcd99ebf450c783bee96 (MD5) Previous issue date: 2014-02-14<br>The rising demand for energy, coupled with its high cost and the search for sustainability propitiated in recent years an increase in demand for renewable biofuels, including biodiesel. Although Brazil, and specifically Paraná, present agricultural vocation, with diversity of raw materials for biodiesel production, it remains tied to demand compulsory. This work aimed to evaluate the ener
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Borretti, Biagio, Nicola Musciagna, Luca Riccò, and Andrea Fornaciari. "Intelligent twin steering system." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71114.

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This article describes the Dana intelligent Twin Steering System designed for mobile vehicles with two steering axles (i.e. with four steering wheels). Current vehicles with four-wheel steering function are typically equipped with a hydraulic configuration where the two steering cylinders are connected in series. This type of connection highlights some limitations on available power, steering comfort and enabling advanced working functions. Dana evolved this type of hydraulic configuration introducing the possibility to disconnect the rear axle from the front one. In this way the rear axle, th
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Al-Hadban, Yehya. "Demand-side management in office buildings in Kuwait through an ice-storage assisted HVAC system with model predictive control." Thesis, Cranfield University, 2005. http://hdl.handle.net/1826/3885.

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Examining methods for controlling the electricity demand in Kuwait was the main objective and motivation of this researchp roject. The extensiveu se of air-conditioning for indoor cooling in office and large commercial buildings in Kuwait and the Gulf States represents a major part of the power and electricity consumption in such countries. The rising electricity generation cost and growing rates of consumption continuously demand the construction new power plants. Devising and enforcing Demand-SideM anagemen(t DSM) in the form of energye fficient operations trategies was the response of this
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Mandryka, V. "Energy efficiency in energy consumption systems." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/40670.

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There has been used four times more energy in the world compared to 1950 year. The main share falls primarily on households and the growing industry. The economic downturn in Ukraine and the countries of former USSR does not influence the consumption of energy – it remains high.
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