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Dissertations / Theses on the topic 'Sensor of power impact efficiency'

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Published: 3 June 2025
Last updated: 31 July 2025

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1

Zeng, Wenjie. "Topics in Energy Efficiency of Low-Power Wireless Sensor Networks." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354555977.

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2

Roa, Christian Raphael. "Smart Power Module for Distributed Sensor Power Network of an Unmanned Ground Vehicle." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/64467.

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Energy efficiency is a driving factor in modern electronic design particularly in power conversion where conversion losses directly set the upper limit of system efficiency. A wide variety of commercially available DC-DC conversion elements have inefficiencies in the 90-97% range. The efficiency range of most common commercial-off-the-shelf (COTS) power supplies is 75-85%, highlighting the fact that COTS power supplies have not kept pace with efficiency improvements of modern conversion elements. Unmanned ground vehicles (UGVs) is an application where efficiency can be crucial in extending
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3

Moragrega, Estrany Anna. "Optimization of positioning capabilities in wireless sensor networks : from power efficiency to medium access." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/387820.

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In Wireless Sensor Networks (WSN), the ability of sensor nodes to know its position is an enabler for a wide variety of applications for monitoring, control, and automation. Often, sensor data is meaningful only if its position can be determined. Many WSN are deployed indoors or in areas where Global Navigation Satellite System (GNSS) signal coverage is not available, and thus GNSS positioning cannot be guaranteed. In these scenarios, WSN may be relied upon to achieve a satisfactory degree of positioning accuracy. Typically, batteries power sensor nodes in WSN. These batteries are costly to re
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Davidova, Rebeka. "Ultra-Low Power Electronics for Autonomous Micro-Sensor Applications." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3063.

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This thesis presented the research, design and fabrication associated with a unique application of rectenna technology combined with lock-in amplification. An extremely low-power harmonic transponder is conjoined with an interrogator base-station, and utilizing coherent demodulation the Remote Lock-In Amplifier (RLIA) concept is realized. Utilizing harmonic re-radiation with very low-power input, the 1st generation transponder detects a transmitted interrogation signal and responds by retransmitting the second harmonic of the signal. The 1st generation transponder performs this task while usin
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5

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

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6

Minchener, A. J. "The development of coal utilisation systems to achieve improved efficiency and reduced environmental impact." Thesis, University of Ulster, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241757.

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7

Chiwewe, Tapiwa Moses. "A distributed topology control technique for low interference and energy efficiency in wireless sensor networks." Diss., University of Pretoria, 2010. http://hdl.handle.net/2263/22800.

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Wireless sensor networks are used in several multi-disciplinary areas covering a wide variety of applications. They provide distributed computing, sensing and communication in a powerful integration of capabilities. They have great long-term economic potential and have the ability to transform our lives. At the same time however, they pose several challenges – mostly as a result of their random deployment and non-renewable energy sources.Among the most important issues in wireless sensor networks are energy efficiency and radio interference. Topology control plays an important role in the desi
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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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9

Villegas, Ruiz Eloy Ángel. "Wave aberrations in ophthalmic progressive power lenses and impact on visual quality." Doctoral thesis, Universidad de Murcia, 2009. http://hdl.handle.net/10803/10843.

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Las lentes progresivas (LP) para gafas es una solución muy extendida para la presbicia, ya que proporcionan una visión continua a todas las distancias debido a un cambio progresivo de potencia. En este trabajo se han medido las aberraciones de frente de onda espacialmente resueltas y la calidad visual en estas lentes. Además del astigmatismo que aumenta periféricamente, también se han encontrado pequeños valores de aberraciones de tercer orden, coma y trefoil, que producen un bajo deterioro de la calidad óptica y visual. El logaritmo de métricas sobre la PSF del sistema lente con ojo son las q
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10

Chaudhury, Kreteeka. "An Experimental Investigation of the Impact of Engineered Surface Processes on Efficiency of Spur Gears." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1556553897979376.

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11

Pai, Ajay Poonjal [Verfasser]. "Impact of Silicon Carbide based Power Modules on Mission Profile Efficiency of Automotive Traction Inverters / Ajay Poonjal Pai." Düren : Shaker, 2020. http://d-nb.info/1215461836/34.

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12

Lagerqvist, Alexander, and Tejas Lakshminarayana. "IoT Latency and Power consumption : Measuring the performance impact of MQTT and CoAP." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Datateknik och informatik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-39392.

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The purpose of this thesis is to investigate the impact on latency and power consumption of certain usage environments for selected communication protocols that have been designed for resource constrained usage. The research questions in this thesis is based on the findings in Lindén report “A latency comparison of IoT protocols in MES” and seeks to answer the following: ”How does MQTT impact the latency and power consumption on a constrained device?” ”How does CoAP impact the latency and power consumption on a constrained device?” ”How does usage environment influence the latency for MQTT and
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13

Iqbal, Muhamad Syamsu. "Performance of IEEE 802.15.4 beaconless-enabled protocol for low data rate ad hoc wireless sensor networks." Thesis, Brunel University, 2016. http://bura.brunel.ac.uk/handle/2438/12852.

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This thesis focuses on the enhancement of the IEEE 802.15.4 beaconless-enabled MAC protocol as a solution to overcome the network bottleneck, less flexible nodes, and more energy waste at the centralised wireless sensor networks (WSN). These problems are triggered by mechanism of choosing a centralised WSN coordinator to start communication and manage the resources. Unlike IEEE 802.11 standard, the IEEE 802.15.4 MAC protocol does not include method to overcome hidden nodes problem. Moreover, understanding the behaviour and performance of a large-scale WSN is a very challenging task. A comparat
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14

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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15

Wang, Jinpeng. "Impact of mobility and deployment in confined spaces on low power and lossy network." Thesis, Université Clermont Auvergne‎ (2017-2020), 2019. http://www.theses.fr/2019CLFAC024/document.

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La technologie des réseaux de capteurs sans fil (RCSF) est l’un des éléments constitutifs de l’Internet des objets (IoT). En raison de leurs caractéristiques de déploiement facile et de leur flexibilité, ils sont utilisés dans de nombreux domaines d’application. Les réseaux à faible consommation et à perte (LLN) sont un type spécial de WSN dans lequel les noeuds sont largement limités en ressources. Convergecast est l’un des modes de communication de base, dans lequel tout le trafic du réseau est destiné à une destination prédéfinie appelée collecteur. Tout en prenant en compte les domaines d’
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16

Sharabaroff, Alexander M. "An Assessment of the Impact of the Deregulation of the Electric Power Sector in the U.S. on the Efficiency of Electricity Generation and the Level of Emissions Attributed to Electricity Generation." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1210903115.

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Sharabaroff, Alexander M. "An assessment of the impact of the deregulation of the electric power sector in the U. S. on the efficiency of electricity generation and the level of emissions attributed to electricity generation." Ohio : Ohio University, 2008. http://www.ohiolink.edu/etd/view.cgi?ohiou1210903115.

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18

Cochet, Martin. "Energy efficiency optimization in 28 nm FD-SOI : circuit design for adaptive clocking and power-temperature aware digital SoCs." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4370.

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L'efficacité énergétique est devenue une métrique clé de la performance des systèmes sur puce numériques, en particulier pour les applications tirant leur énergie de batteries ou de l'environnement. La miniaturisation technologique n'est plus suffisante pour atteindre les niveaux de consommation requis. Ce travail de recherche propose ainsi de nouvelles conceptions de circuits pour la génération d'horloge flexible, la mesure de puissance et de température ainsi que l'intégration de ces blocs au sein de systèmes sur puce complets.Le multiplieur de fréquence innovant en boucle ouverte proposé pe
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Cochet, Martin. "Energy efficiency optimization in 28 nm FD-SOI : circuit design for adaptive clocking and power-temperature aware digital SoCs." Electronic Thesis or Diss., Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4370.

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L'efficacité énergétique est devenue une métrique clé de la performance des systèmes sur puce numériques, en particulier pour les applications tirant leur énergie de batteries ou de l'environnement. La miniaturisation technologique n'est plus suffisante pour atteindre les niveaux de consommation requis. Ce travail de recherche propose ainsi de nouvelles conceptions de circuits pour la génération d'horloge flexible, la mesure de puissance et de température ainsi que l'intégration de ces blocs au sein de systèmes sur puce complets.Le multiplieur de fréquence innovant en boucle ouverte proposé pe
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20

Meghji, Mahir Lumumba. "On a Joint Physical Layer and Medium Access Control Sublayer Design for Efficient Wireless Sensor Networks and Applications." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2013. https://ro.ecu.edu.au/theses/590.

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Wireless sensor networks (WSNs) are distributed networks comprising small sensing devices equipped with a processor, memory, power source, and often with the capability for short range wireless communication. These networks are used in various applications, and have created interest in WSN research and commercial uses, including industrial, scientific, household, military, medical and environmental domains. These initiatives have also been stimulated by the finalisation of the IEEE 802.15.4 standard, which defines the medium access control (MAC) and physical layer (PHY) for low-rate wireless p
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21

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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22

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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23

Matias, Hernani Tabarelli. "Estudo da sustentabilidade na geração de energia elétrica por usina termelétrica a carvão mineral." Universidade Nove de Julho, 2017. http://bibliotecatede.uninove.br/handle/tede/1753.

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Submitted by Nadir Basilio (nadirsb@uninove.br) on 2018-04-13T17:49:06Z No. of bitstreams: 1 Hernani Tabarelli Matias.pdf: 1127572 bytes, checksum: 065ab8d88caa33ce41de09494ab4b48a (MD5)<br>Made available in DSpace on 2018-04-13T17:49:06Z (GMT). No. of bitstreams: 1 Hernani Tabarelli Matias.pdf: 1127572 bytes, checksum: 065ab8d88caa33ce41de09494ab4b48a (MD5) Previous issue date: 2017-08-22<br>Brazil's energy and electrical matrix is one of the cleanest and most renewable in the world. Its planning and expansion considers factors such as sector performance, economic and social development. In
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24

Du, Sijun. "Energy-efficient interfaces for vibration energy harvesting." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/270359.

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Ultra low power wireless sensors and sensor systems are of increasing interest in a variety of applications ranging from structural health monitoring to industrial process control. Electrochemical batteries have thus far remained the primary energy sources for such systems despite the finite associated lifetimes imposed due to limitations associated with energy density. However, certain applications (such as implantable biomedical electronic devices and tire pressure sensors) require the operation of sensors and sensor systems over significant periods of time, where battery usage may be imprac
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25

Козловський, Олександр Антонович. "Підвищення ефективності експлуатації повітряних ліній розподільних електричних мереж в умовах ожеледоутворення". Thesis, Центральноукраїнський національний технічний університет, 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/30700.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.14.02 – електричні станції, мережі і системи. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2017. Дисертація присвячена дослідженню проблемних питань, пов'язаних із розробкою інформаційних систем моніторингу стану повітряних ліній в умовах ожеледоутворення, що забезпечують зниження відмов у електропостачанні шляхом надання електротехнічному персоналу завчасної інформації про момент ожеледоутворення. У роботі представлено критичний аналіз існуючих систем моніторингу ожеле
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Козловський, Олександр Антонович. "Підвищення ефективності експлуатації повітряних ліній розподільних електричних мереж в умовах ожеледоутворення". Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/30699.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.14.02 – електричні станції, мережі і системи. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2017. Дисертація присвячена дослідженню проблемних питань, пов'язаних із розробкою інформаційних систем моніторингу стану повітряних ліній в умовах ожеледоутворення, що забезпечують зниження відмов у електропостачанні шляхом надання електротехнічному персоналу завчасної інформації про момент ожеледоутворення. У роботі представлено критичний аналіз існуючих систем моніторингу ожелед
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27

Fujdiak, Radek. "Analýza a optimalizace datové komunikace pro telemetrické systémy v energetice." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-358408.

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Telemetry system, Optimisation, Sensoric networks, Smart Grid, Internet of Things, Sensors, Information security, Cryptography, Cryptography algorithms, Cryptosystem, Confidentiality, Integrity, Authentication, Data freshness, Non-Repudiation.
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28

Dehleh, Hossein Zadeh Parisa. "Base Station Positioning and Relocation in Wireless Sensor Networks." Master's thesis, 2010. http://hdl.handle.net/10048/1452.

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Base station (BS) positioning is considered an effective method to improve the performance of a Wireless Sensor Network (WSN). The goal of this dissertation is to minimize total energy consumption and to prolong lifetime of a WSN. First, the idea of the BS positioning in WSNs through our exhaustive search algorithm is evaluated; where it is shown that the BS position has an undeniable effect on the energy efficiency and lifespan of a WSN. Then, a metric-aware optimal BS positioning and relocation mechanism for WSNs is proposed. This technique locates the BS with respect to the available energy
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Barros, Diogo Rafael Bento. "Video-bandwidth impact and compensation in wideband high-efficiency power amplifiers." Doctoral thesis, 2021. http://hdl.handle.net/10773/33534.

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The aim of this work is to determine, quantify and model the performance degradation of wideband power amplifiers when subject to concurrent multiband excitation, with a particular focus on the average efficiency variation. The origins of this degradation are traced to two main transistor properties: the output baseband current generation by the nonlinear transconductance, and the input baseband current generation by the nonlinear gate-source capacitance variation. Each mechanism is analised separately, first by providing a qualitative and intuitive explanation of the processes that lea
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30

Chou, Chih-Hung, and 周志鴻. "The Impact Factors of Thermal Efficiency of Taipower's Fossil Fuel Power Plant : Taichung Thermal Power Plant." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/89408865349209564065.

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碩士<br>國立交通大學<br>管理學院碩士在職專班經營管理組<br>97<br>The coal-fired power plants provide over 30% of the capacity of Taipower. Effectively enhancimg the efficiency of power plants can help reduce both the cost of power generation and the greenhouse gas emissions. In this research we collect and analyze the operational data of coal-fired steam turbine power units No.1~No.8 of Taichung Power Plant, in order to establish a multiple regression model of thermal efficiency. This research provides suggestions for Taipower company to improve its thermal efficiency. Our major empirical findings are: (1) The te
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31

Lin, Chih-Hung, and 林志鴻. "The Evaluation of Thermal Impact on Power Efficiency of Laptop PC Charger." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/95737901302382746541.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>104<br>The design of laptop is more and more challenging than before. In this thesis, the focus is to evaluate the charger efficiency of two different battery charger architectures, i.e. hybrid power boost (HPB) charger and narrow voltage direct current (NVDC) charger, between the room temperature and higher ambient temperature in computing system. First, the system impact aroused from temperature is explored by experiments. Then by using proper thermal dissipation solution and fan-cooling design to reduce the heat generation and increase the system efficiency, as we
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Wong, Jhih-Fan, and 翁至凡. "Impact Analysis for Different Load of Solar Systems of Power Generation Efficiency." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/b738jq.

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碩士<br>國立臺北科技大學<br>能源與冷凍空調工程系碩士班<br>100<br>The economic of the world grow up very quickly and the energy requirement is more and more. The electric power is need more for the industry. However, the oil in the earth will exhaust in recent years. Today, there are many scientists try to find a new energy. The renewable energy, due to their inexhaustible supply and environmentally clean characteristic, is probably a kind of most potential renewable energy for recent development . The distributive power generations become the most important as the environmental awareness and renewable energy develop
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Wu, Feng-Yu, and 吳峰羽. "Impact of PWM Jitter on the Efficiency of Switching-Mode Power Converters." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/5c2rg6.

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博士<br>國立臺灣大學<br>電機工程學研究所<br>105<br>There are several reasons to cause the PWM jitter in power converter such as EMI reduction, and the side effect of high bandwidth design. The primary objective of this dissertation is to propose two efficiency models for evaluating the impact of the PWM jitter on the efficiency of switching-mode power converter: average efficiency model and the multi-frequency efficiency model. By taking the product of two perturbation terms into consideration, which is ignored in the conventional average small-signal model, the average efficiency model is proposed first. Du
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CHEN, HAN-CHE, and 陳漢哲. "Assessment on the Impact of PV(PhotoVoltaic) System Connecting with Power Grid and Wiring to Power Generation Efficiency." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/02264125528891901913.

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碩士<br>明志科技大學<br>電子工程研究所<br>102<br>Industry development resulted in a lot of carbon dioxide emission, global warming and natural resource depletion. The radiation leakage of Japanese nuclear power plant made people ponder about the security of nuclear power plant. Therefore, the PV power generation system has become the most widely used renewable energy systems. Many countries have enacted renewable energy assistance program policy. In Taiwan, the annual decline in the amount of government subsidies, PV power generation efficiency and implementation costs become an important factor in the devel
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Zhan, Cun-Qin, and 詹存勤. "Study of Power Saving and Water-Splashing Efficiency for the Application of Sensor Network in Irrigation System." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/59248242367599197187.

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碩士<br>國立中央大學<br>通訊工程學系在職專班<br>104<br>Taiwan is ranked in no. eighteen among water-scarce countries all over the world. In most people's impression, there are over two thousand millimeters of rainfall in average per year in Taiwan, and there is no shortage of water in this country. However, due to the densely population, steeped mountains, concentrated rain, and the short of rivers,most of the rainwater would rapidly flow into the ocean. In February 2015, since there was lack of rain, water was limited to different operations in Taiwan. It caused impacts on agriculture like unable to irrigate d
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Adeniyi, A. O. "Incandescent light power efficiency: an impact study on the power consumption of the Vaal University of Technology's light sources." Thesis, 2013. http://hdl.handle.net/10352/265.

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M. Tech. (Power Engineering, Faculty of Engineering and Technology), Vaal University of Technology<br>In view of the energy consumption problems, an impact study, extensive laboratory tests and an investigation towards comparable energy saving light sources was carried out on the light sources identified in the survey conducted at the Vaal University of Technology (VUT), Vanderbijlpark campus. Three types of identified incandescent light sources were purchased and extensively tested in order to obtain viable statistical data on the life span, luminance delivered per unit, power consumption an
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黃建根. "The Impact of Upgrading Blade Stages of Thermal Power Plant Turbine on The Efficiency of The Generator." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/73040324787291677940.

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碩士<br>國立彰化師範大學<br>電機工程學系<br>101<br>It is the goal of power company to improve the thermal power generation efficiency and increase the amount of stable power generation. The turbine is an important structure of generator and an important mechanical equipment to the energy conversion, and the importance in the thermal power system. The analysis to raise the blade stages of thermal power plant turbine that impact on the efficiency of the generator when the base structure of the turbine does not change. The efficiency of the turbine is a direct impact on the overall power generation performance.
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You, Shih-Jie, and 尤士杰. "A Study of the Impact of Mobile Device Sensor and Optical Character Recognition Applications on the Operational Efficiency of ERP Systems." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/26403157055133614334.

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碩士<br>輔仁大學<br>資訊管理學系碩士班<br>104<br>Enterprise Resource Planning （ERP） systems provide enterprises integrated information including distribution, purchasing, warehousing, accounting, and human resources. ERP systems ensure data timeliness, effectively improve the traditional processes, and reduce the required time for the processes. Using SOA, enterprises can arrange and combine existing functional service components to make the system processes modification easier. The communication between heterogeneous systems can also be improved by requesting each other's service components. SOA makes syste
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Chen, Chung-Jui, and 陳重叡. "Study on the impact of different properties of coal powder to the burning efficiency from thermal power plant – A Case Study of the Taichung Power Plant." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/20437530319439736339.

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碩士<br>逢甲大學<br>環境工程與科學所<br>97<br>This study analyzed the fundamental properties of coal powder, fly ash and desulfurization gypsum from thermal power plant. The ignition loss was utilized to be the indicator of combustion efficiency. Then the overall combustion efficiency of the power plant was estimated. The results showed that the mass median diameter(MMD) of the coal powder after machine overhaul was smaller than those before overhaul. All of the fly ash were fine particles, especially the samples after overhaul, even approaching to nanosize. And the loss on ignition were also smaller aft
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Li, Hung-Chang, and 李鴻昌. "Using Nano-Scale Mechanical Property Characterization to Explore the Impact of Molecular Composition on Power Conversion Efficiency in Polymer/Fullerene Bulk-Heterojunction Solar Cell." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/26011756008415703832.

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碩士<br>國立中正大學<br>機械工程所<br>95<br>Recently the organic hetero-junction solar cell has attracted much research interest due to their advantages of easy fabrications and large, flexible area. Most of these investigation focus on the solar cells with active layers composed P3HT/PCBM (poly[3-hexylthiophene] / [6,6]-phenyl-C61-butyric acid methyl ester) for electron donor and acceptor to increase the power conversion efficiency (PCE). These researches indicate that different fabrication conditions and blended proportion would affect the PCE and surface morphology of a active layer (P3HT: PCBM). Howeve
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(11256321), Manuel Eduardo Mar Valencia. "RESIDENTIAL ELECTRICITY CONSUMPTION ANALYSIS: A CROSSDOMAIN APPROACH TO EVALUATE THE IMPACT OF COVID-19 IN A RESIDENTIAL AREA IN INDIANA." Thesis, 2021.

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The pandemic scenario caused by COVID-19 is an event with no precedent. Therefore, it<br>is a phenomenon that can be studied to observe how electricity loads have changed during the stayat-home order weeks. The data collection process was done through online surveys and using<br>publicly available data. This study is focusing on analyzing household energy units such as<br>appliances, HVAC, lighting systems. However, collecting this data is expensive and timeconsuming since dwellings would have to be studied individually. As a solution, previous studies<br>have shown success in characterizing r
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Subtil, João Miguel Borges. "Efficient Communication in Dense Networks." Master's thesis, 2017. http://hdl.handle.net/10316/83270.

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Dissertação de Mestrado em Engenharia Informática apresentada à Faculdade de Ciências e Tecnologia<br>Nos últimos anos o número de redes de Internet das Coisas tem aumentado. Para suportar redes de 5ª Geração (5G) redes altamente densas de larga escala vão ter de ser implementadas. Essas redes vão conter um número enorme de sensores a pilhas, detectando evento e reenviando mensagens em topologias dinâmicas (estrela, malha, ad-hoc) Estas redes altamente densas podem levar um nó a esgotar os seu recursos rapidamente. Portanto essas redes terão de ser tão eficientes quanto possível para opera
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