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Dissertations / Theses on the topic 'Supplies'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Thomas, Merin M. B. A. Sloan School of Management. "Intelligent supplies replenishment process." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122904.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, in conjunction with the Leaders for Global Operations Program at MIT, 2019<br>Thesis: S.M., Massachusetts Institute of Technology, Operations Research Center, in conjunction with the Leaders for Global Operations Program at MIT, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Company X is facing high cost to serve customers s

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2

Taylor, David Donald James. "Tools for managing intermittent water supplies." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/118666.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 239-253).<br>Nearly one billion people receive water from piped networks that are not always pressurized. These intermittent water supplies (IWS) are more likely to recontaminate the distributed water than continuously-operated (or '24x7') water

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3

Elice, Sara Jo 1979. "Chlorine demand in Haitian water supplies." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/84797.

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4

Walpole, Mark Edward. "Intrinsically Safe (IS) Active Power Supplies." Thesis, Queensland University of Technology, 2003. https://eprints.qut.edu.au/15896/1/Mark_Walpole_Thesis.pdf.

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Intrinsically safe (IS) active power supplies subjected to certain transient load conditions can deliver power to a circuit at significantly higher levels than indicated on their nameplate ratings. During a transient load such as an intermittent short-circuit, energy is transferred from the power supply to the short-circuit and an electrical arc may form when the short-circuit is applied or removed. This poses a spark ignition risk as energy is transferred from the arc to the surrounding atmosphere. Currently various International and Australian Standards define the performance requirements

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5

Walpole, Mark Edward. "Intrinsically Safe (IS) Active Power Supplies." Queensland University of Technology, 2003. http://eprints.qut.edu.au/15896/.

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Intrinsically safe (IS) active power supplies subjected to certain transient load conditions can deliver power to a circuit at significantly higher levels than indicated on their nameplate ratings. During a transient load such as an intermittent short-circuit, energy is transferred from the power supply to the short-circuit and an electrical arc may form when the short-circuit is applied or removed. This poses a spark ignition risk as energy is transferred from the arc to the surrounding atmosphere. Currently various International and Australian Standards define the performance requirements

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6

Hu, Aiguo Patrick. "Selected resonant converters for IPT power supplies." Thesis, University of Auckland, 2001. http://hdl.handle.net/2292/3.

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For more than a century it has been known that signals and power can be transferred electromagnetically. This knowledge has motivated substantial research and development into wireless signal transmission which today is competitive with traditional conductive cabling systems. Power transfer across air gaps, however, has seen more modest development and has tended to be restricted to electric machines that have tight magnetic couplings. It is only very recently that a novel technique termed IPT (Inductive Power Transfer) has made power delivery to movable objects across large air gaps a practic

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7

Yang, Zaohong. "Novel techniques for switch-mode power supplies." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0007/NQ38339.pdf.

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8

Hama-amin, Samman, and Andrejs Veldre. "Investigation of power supplies used in OSC950." Thesis, KTH, Data- och elektroteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-133450.

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SammanfattningOCS950(Object Controller System 950) är en av Bombardiers produkter som hanterar säkerhetssystemet i järnvägstrafiken. Det består av olika delsystem och strömförsörjs mha nätaggregat (PSU – Power Supply Unit). I den här rapporten undersöks den befintliga PSU74-modellen samt nya switchade nätaggregat som finns på marknaden.Bakgrunden till att Bombardier vill byta ut PSU74 mot ett nytt switchat aggregat är att PSU74 har en vikt på 14 kg och tar stor plats i el-skåp. Ett swichat nätaggregat väger ungefär 1,5 kg och är så pass kompakt att det tar litet utrymme i el-skåpet.Bombardier

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9

Dancy, Abram P. (Abram Paul). "Power supplies for ultra low power applications." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10069.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.<br>Includes bibliographical references (p. 101-103).<br>by Abram P. Dancy.<br>M.Eng.

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10

Tebb, David W. "Transistorised induction heating power supplies using MOSFET's." Thesis, Loughborough University, 1986. https://dspace.lboro.ac.uk/2134/12595.

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A prototype has been designed and constructed that has fed 3kW into a Commercial workcoil at 150 kHz. Another lower power inverter has been built. This was developed with ease of production in mind to aid the transfer of technology to the sponsoring company. The company have adopted this unit and are manufacturing it. The thesis reviews induction heating power supplies with emphasis on those able to operate above 100 kHz. Members of the MOSFET family are described and critically assessed for the application Prototypes of various configurations have been constructed and experience of these has

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11

Popely, Deborah R. "Strategies to Maintain Adequate Hotel Water Supplies." ScholarWorks, 2018. https://scholarworks.waldenu.edu/dissertations/5931.

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Hotel guests can use 2 to 3 times more water than community residents. Hotels are water-intensive businesses, and water scarcity presents a pressing problem for managers who rely on an uninterrupted supply of water to meet guests' needs and maintain profitability. Using the resource-based view (RBV) as a conceptual framework, the purpose of this qualitative multiple case study was to explore strategies that hotel managers used to successfully maintain adequate water supplies in the Spanish Canary Islands, an historically arid site and a tourism destination. Data were collected from semistructu

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12

Wong, Fu Keung, and n/a. "High Frequency Transformer for Switching Mode Power Supplies." Griffith University. School of Microelectronic Engineering, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050211.110915.

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A power supply is an essential part of all electronic devices. A switching mode power supply is a light weight power solution for most modern electronic equipment. The high frequency transformer is the backbone of modern switched mode power supplies. The skin effect and proximity effects are major problems in high frequency transformer design, because of induced eddy currents. These effects can result in transformers being destroyed and losing their power transferring function at high frequencies. Therefore, eddy currents are unwanted currents in high frequency transformers. Leakage inductance

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13

Cleaver, Frances. "Community management of rural water supplies in Zimbabwe." Thesis, University of East Anglia, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321023.

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14

Miwa, Brett Andrew. "Interleaved conversion techniques for high density power supplies." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/12763.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.<br>Includes bibliographical references (leaves 188-193).<br>by Brett Andrew Miwa.<br>Ph.D.

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15

Amarasinghe, Kanishka A. "Resonance mode power supplies with power factor correction." Thesis, Loughborough University, 1990. https://dspace.lboro.ac.uk/2134/23672.

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There is an increasing need for AC-DC converters to draw a pure sinusoidal current at near unity power factor from the AC mains. Most conventional power factor correcting systems employ PWM techniques to overcome the poor power factor being presented to the mains. However, the need for smaller and lighter power processing equipment has motivated the use of higher internal conversion frequencies in the past. In this context, resonant converters are becoming a viable alternative to the conventional PWM controlled power supplies. The thesis presents the implementation of active power factor corre

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16

Chen, Rengang. "Integrated EMI Filters for Switch Mode Power Supplies." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/25992.

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Because of the switching action, power electronics converters are potentially large EMI noise sources to nearby equipment. EMI filters are necessary to ensure electromagnetic compatibility. Conventional discrete EMI filters usually consist of a large number of components, with different shapes, sizes and form factors. The manufacturing of these components requires different processing and packaging technologies, of which many include labor-intensive processing steps. In addition, due to the parasitics of discrete components, high-frequency attenuation of the filter is reduced and the effective

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17

Zhang, Wei. "Integrated EMI/Thermal Design for Switching Power Supplies." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36672.

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This work presents the modeling and analysis of EMI and thermal performance for switch power supply by using the CAD tools. The methodology and design guidelines are developed. By using a boost PFC circuit as an example, an equivalent circuit model is built for EMI noise prediction and analysis. The parasitic elements of circuit layout and components are extracted analytically or by using CAD tools. Based on the model, circuit layout and magnetic component design are modified to minimize circuit EMI. EMI filter can be designed at an early stage without prototype implementation. In the

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18

Wong, Fu Keung. "High Frequency Transformer for Switching Mode Power Supplies." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/367650.

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A power supply is an essential part of all electronic devices. A switching mode power supply is a light weight power solution for most modern electronic equipment. The high frequency transformer is the backbone of modern switched mode power supplies. The skin effect and proximity effects are major problems in high frequency transformer design, because of induced eddy currents. These effects can result in transformers being destroyed and losing their power transferring function at high frequencies. Therefore, eddy currents are unwanted currents in high frequency transformers. Leakage inductance

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19

Harty, Michael David. "Statistical process control as a tool for expert system diagnostics." Thesis, Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/24853.

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20

Santos, William O. "An analysis of the prediction accuracy of the U.S. Navy repair turn-around time forecast model." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FSantos.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, June 2003.<br>Thesis advisor(s): Robert A. Koyak, Samuel E. Buttrey. Includes bibliographical references (p. 55). Also available online.

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21

Al-Ansary, Hany A. "Investigation and improvement of ejector-driven heating and refrigeration systems." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/36540.

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22

Hu, Lihua. "The application of reactive power compensation to ac electrified railway systems." Thesis, Staffordshire University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282965.

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23

Wong, Wilson Kia Onn. "To what extent and why has the structure of the global automotive components industry changed since the 1980s? : an analysis of the global tyres, seats, constant velocity joints, brakes and automotive semiconductor sectors." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648395.

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24

Maria, José Michelle. "Optimization of Production Flow at Eco Supplies Solar AB." Thesis, KTH, Industriell produktion, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-102530.

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In this competitive world with rapid growth of markets, the main goal of any company is to attain an edge over its competitors. In order to achieve this goal a company has to continually improve its process and eliminate the wastes in the process while not compromising on the quality of the product and customer satisfaction. Though Eco Supplies Solar AB is one of the largest producers of Photovoltaic solar modules in Scandinavia, the need for improvement is vital to match with growing requirements and to maintain its position in the market. This master thesis was done for Eco Supplies Solar AB

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25

Hu, Zhiyuan. "A multiplexed feedback solution for isolated digital power supplies." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28530.

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As digital power supply became a significant market opportunity, manufacturers started looking at ways to control the system cost by reducing components and their technical requirements. This thesis proposes a multiplexed digital feedback solution for isolated digital power supply systems. Several digital isolators used in existing applications can be reduced to one. The data transmission speed is greatly reduced. The communication protocol is DC-balanced; therefore pulse-transformer type digital isolators can be used resulting in further lower cost. The proposed solution also improves output

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26

Burgers, Alfonso. "The water supplies and related structures of Roman Britain." Thesis, University of Leicester, 1997. http://hdl.handle.net/2381/30789.

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Information is provided on the remains of aqueducts, wells, Roman baths, drains, pipes, springs and tanks, from 807 sites in Roman Britain (fortresses, forts, towns, small towns, settlements and villas). The introduction of running water supplies and baths had considerable social implications, for urban and rural communities. Aqueducts are the most intensively researched water-related structure of Roman date; evidence from Britain is presented in detail. Particular attention focuses on unresolved structural problems (Leicester, Lincoln). Wells were also important for water supply at all site t

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27

Barber, John. "The rationalisation of drinking water supplies for pig housing." Thesis, University of Plymouth, 1992. http://hdl.handle.net/10026.1/2463.

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This study consisted of a series of experiments which investigated the water use of growing/finishing pigs (25-90 kg), newly weaned pigs (5- 12 kg) and gestating sows. Drinker type was found to affect water use in growing pigs. For example significantly more water (28 %) was used from Mono-flo nipple drinkers than Arato bite drinkers (P<0.01). For all classes of pigs studied water use was significantly increased by increasing the water delivery rate. The percent increase in water use over the extremes of water delivery rate tested in individual trials were respectively: ration fed growing pigs

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28

Pardon, Ojeda Mauricio. "Treatment of turbid surface water for small community supplies." Thesis, University of Surrey, 1989. http://epubs.surrey.ac.uk/2191/.

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29

Shepherd, Kim. "Health implications of microbial contamination of private water supplies." Thesis, University of Sunderland, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310618.

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30

Worthington, D. R. E. "The cooling of electronic power supplies by natural convection." Thesis, University of Exeter, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380691.

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31

Bartram, Jamie. "Optimising the monitoring and assessment of rural water supplies." Thesis, University of Surrey, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320994.

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32

Mac-Lean, Andres (Andres Felipe) 1959. "Introducing the concept of office supplies superstores in Chile." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/9186.

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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management, 2000.<br>Also available online on DSpace at MIT.<br>Includes bibliographical references (leaf 88).<br>The concept of office supplies superstores doesn't exist in Chile. This thesis defines an entry strategy for this concept in Chile. The thesis is divided into two areas: 1. An analysis of the office supply industry in the USA mainly represented by Staples. This work is based on the application of the Delta Model. This part includes an analysis of the environment, a detail analysis of Staples (mission, organizat

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33

Stevens, Chad Howard 1980. "Assessment of desalination treatment processes for future water supplies." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/85745.

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34

Hinchliffe, Stephen. "Solid-state high-frequency electric process heating power supplies." Thesis, Loughborough University, 1989. https://dspace.lboro.ac.uk/2134/32518.

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A detailed critical review has been made of both solid state power devices and circuit topologies with emphasis on their application to high frequency electric process heating power supplies operating between 3and 30 MHz. A number of prototype units have been designed and constructed and their suitability for high frequency induction heating and dielectric heating applications investigated. Desirable qualities being robustness, tolerance to load mismatch, ease of design, simplicity and cost of constituent components as compared with present day valve equipment The experience gained in these in

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35

Van, Wyk Ashwill Louis. "Effects of voltage unbalanced supplies on energy-efficient motors." Master's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/11523.

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Eskom DSM has recently introduced an Energy Efficiency (EE) Motor program, which provides incentives to industrial customers to retrofit standard motors with EE motors. The main objective of the program is to realize energy savings through the replacement of standard (STD) induction motors with higher efficiency EE motors. Although the principle of the program is correct, there are several significant power quality and performance issues with EE motors.These issues need to be thoroughly investigated in order to achieve the overall energy saving objectives of program.

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36

Garcia, Claudett Nicolas, Fernández Renato Lastarria, Zamudio Luz Stefanny Lizana, and Lanatta Nicolas Sifuentes. "Implementación de Utilibro." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626656.

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El presente proyecto sobre útiles escolares o artículos de oficina nos muestra la viabilidad de su ejecución, este proyecto está dirigido a padres de familia y personas que laboran en oficinas que viven, trabajan o radican en la zona 7 de Lima Metropolitana, nos estamos refiriendo a los distritos de San Borja, San Isidro, Miraflores, Surco y La Molina. Nos hemos enfocado en ese target, debido a que según nuestras investigaciones se les hace muy complicado la compra de útiles escolares a inicios de cada año escolar a los padres de familia, y por otro lado a las personas que laboran en oficina s

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37

Ho, Yan-cheung Robin. "An appraisal on the water supplies and sewage disposal management by various governmental departments : Water Supplies Department, Environmental Protection Department, and Drainage Services Department /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21301906.

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38

Zhang, Yang. "Digital control in modular masterless multi-phase microprocessor power supplies." Connect to online resource, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3273731.

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39

Barrott, Lisa. "Evaluation of novel disinfection methods for small community water supplies." Thesis, Imperial College London, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340784.

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40

Hallworth, Michael. "Digital peak current mode control of switched-mode power supplies." Thesis, University of Reading, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.602418.

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Peak current mode control is a popular method of SMPS control due the inherent cycle-by- cycle current limiting, feed-forward control and current sharing ability it provides. However, the subharmonic oscillations which plague peak current mode control must be removed using slope compensation. Until the work presented in this thesis, there have been no true digital implementations of peak current mode control due to the difficulties associated with implementing a digital form of slope compensation. This thesis introduces a complete digital peak current mode converter which uses a novel method o

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41

Beatty, Debra Ann Kemnitz. "Simulation of a family of DC-to-DC power supplies." Honors in the Major Thesis, University of Central Florida, 1995. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/137.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.<br>Bachelors<br>Engineering<br>Electrical Engineering

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42

Al-Qassemi, Rasha A. "Aspects of behaviour of Pseudomonas aeruginosa associated with water supplies." Thesis, University of Reading, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288687.

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43

Williams, Richard. "High frequency multi-element transformers for switched-mode power supplies." Thesis, University of Bristol, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283625.

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44

Farkas, Thomas. "A scientific approach to EMI reduction in switching power supplies." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/35360.

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45

Slamdien, Muammar. "Mitigating interference from switch-mode power supplies in sampling receivers." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2513.

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Thesis (MTech (Electrical Engineering))--Cape Peninsula University of Technology, 2017.<br>This thesis reports on the research and development of techniques applied to mitigate interference from switch-mode power supplies in sampling receivers and also more specifically for FMCW radar receiver applications. During the system testing phase of an FMCW Radar at Reutech Radar Systems (RRS), it was found that a large false target was emerging on the Range-Doppler Map (RDM). It was concluded that the problem was originating from interference caused by the switch-mode power supplies (SMPS), which sup

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46

Manyage, Marubini J. "Operation of induction machines in the presence of unbalanced supplies." Master's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/8753.

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Includes bibliographical references.<br>Three-phase induction machines are widely used in South Africa for industrial, commercial and residential applications because of their simple construction and low maintenance. The manufacturers design these motors to provide their nameplate ratings when supplied with balanced sinusoidal voltages. However, the power system experiences unbalanced voltages, overvoltages, undervoltages, etc, which are seen at the motor terminals. The South African Electricity Supply Utility (Eskom) supplies the commercial and industrial systems with a line voltage range of

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47

Theodore, Susan Mack 1958. "Reduction of electromagnetic interference in multiple switched mode power supplies." Thesis, The University of Arizona, 1995. http://hdl.handle.net/10150/278520.

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A method to reduce Electromagnetic Interference (EMI) of multiple switching waveforms by harmonic cancellation is presented. The waveforms considered are input currents generated by 'n' Discontinuous Mode (DCM) Flyback Switched Mode Power Supplies (SMPS) that share a common source. The waveforms are modeled as ideal triangular waveforms and a Fourier analysis is performed to determine the phase relationship, θ, that minimizes the EMI. The combined EMI is minimum when θ=360°/n and maximum when θ=0°. A system of two DCM Flyback SMPS is designed in such a way that both 0° and 180° phase shifts be

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48

Louw, Andre. "Investigating the benefits of using selected lean techniques at a South African exhaust manufacturer-a case study." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1518.

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This study investigates the implementation of supermarket-based scheduling of parts at a South African exhaust manufacturing plant. The study firstly investigates the requirements the manufacturer had to contend with in ensuring a valuable contract was won. The nature of the contract is such that it warrants building of a new facility. The design of the facility and the manufacturing processes is of importance as some Lean techniques are employed during these early stages. The research takes the form of a case study and data is collected mainly through interviews with staff, but also from dire

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49

Rothsching, Norman. "The effect of shaft stiffness on the performance of the ice hockey slap shot." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0001/MQ43940.pdf.

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Muzzy, Sarah Burnett. "Consumerism and the transition to motherhood : a project based upon an independent investigation /." View online, 2007. http://hdl.handle.net/10090/7585.

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