Dissertations / Theses on the topic 'Electric and electronic equipment'
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Zhang, Shunli. "Recycling and processing of end-of-life electric & electronic equipment : fundamentals and applications /." Doctoral thesis, Luleå tekniska universitet, 1999. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-16902.
Full textGodkänd; 1999; 20061117 (haneit)
Thapar, Alok. "Investigation of power quality catagorisation and simulating its impact on sensitive electronic equipment /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18160.pdf.
Full textChu, Beatrice C. B. "Novel optical methods for flowmetering and electric current sensing." Thesis, University of Kent, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314488.
Full textChongwatpol, Jongsawas. "Analysis of waste electrical and electronic equipment (WEEE) in Thailand and implementation of risk management plan to comply with future WEEE regulations." Menomonie, WI : University of Wisconsin--Stout, 2004. http://www.uwstout.edu/lib/thesis/2004/2004chongwatpolj.pdf.
Full textDirkse, van Schalkwyk W. J. "The placing of line surge arresters and fuses on 11 and 12 kV lines to protect equipment against lightning." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52553.
Full textENGLISH ABSTRACT: Unshielded distribution lines has a poor performance during lightning activity. Lightning initiates flashovers between the phases and earth and causes line breakers to trip several times during a lightning storm. In addition equipment like fuses, surge arresters and transformers are damaged by lightning and cause in some cases long power interruptions to customers. The application of line surge arresters on distribution lines is a solution that is implemented worldwide to limit the lightning related problems. This thesis investigated using line surge arresters in conjunction with bushing-mount fuses to decrease nuisance fusing and transformer damage during lightning activity. Two new pieces of equipment (dropout surge arresters and transformer bushingmount fuses) were developed and strategically placed on 4 different distribution lines. Equipment failures decreased by 90 % while financially the project had an excellent return on investment.
AFRIKAANSE OPSOMMING: Distribusie lyne sonder skermdrade presteer swak gedurende weerlig aktiwiteit. Weerlig veroorsaak oorvonking tussen fases en aard geleiers wat lei tot breker klinke. Transformators, sekerings, stuwingsafleiers en ander toerusting word ook deur weerlig beskadig en veroorsaak in sommige gevalle lang toevoer onderbrekings. Installering van lyn stuwingsafleiers op distribusielyne is 'n metode wat wêreldwyd gebruik word om oorvonking en weerligskade te beperk. Hierdie tesis ondersoek die installering van lyn stuwingsafleiers en deurvoerder gemonteerde sekerings om transformator skade en onnodige blaas van sekerings te beperk tydens weerlig aktiwiteit. Nuwe toerusting (uitval stuwingsafleiers en transformator deurvoerder gemonteerde sekerings) was ontwikkel en strategies op 4 verskillende distribusie lyne geïnstalleer. 'n Negentig persent vermindering in toerusting beskadiging is behaal terwyl die projek finansiël 'n goeie opbrengs op belegging meegebring het.
Zhang, Ruoju, and 張若菊. "A new PM hybrid motor drive for electric vehicles." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31472849.
Full textPennock, Michael. "Waste electrical and electronic equipment (WEEE) creating an electronics equipment takeback program in light of current European Union directives and possible U.S. legislation /." Online version, 2003. http://www.uwstout.edu/lib/thesis/2003/2003pennockm.pdf.
Full textBodegren, Patrik. "Doseringsutrustningen SafeBond Electronic." Thesis, Linköping University, Department of Science and Technology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1788.
Full textThis thesis for the Master of Science degree was performed at Oppunda Electronics AB. The assignment was to further develop an existing prototype of a dispensing equipment. The dispensing equipment doses a kind of glue, bonding which dentist use to mend teeth. The dispensing equipment is adjusted to dose 12 micro litres of bonding. With the dispensing equipment SafeBond Electronic the user can reduce the bonding consumption with approximately 50 percent. Furthermore will the handling of the bonding be more hygienic, because the photoelectric sensor allows the user to start a dosage without touching any part of the dispensing equipment.
The main requirements for the development was to reduce the size of the existing prototype and implement functions to makeit possible to change the dose time and display the current dose time. Some parts and components have been replaced and reorganized to reduce the size of the dispenser. The choice of a steep motor, which makes the rotation when a dosage is performed, is the largest contribution to shrink the size of the equipment. Also the new designed circuit board makes it possible to reduce the size of the dispensing equipment.
A LCD is used to show the current dose time. The LCD is a part of a LCD module. To change the dosing time two push buttons are being used. A microcontroller is controlling the steep motor. The microcontroller is a PIC16F877A from Microchip. The microcontroller in the dispensing equipment is controlling all the functions. The program code is designed to function in an interrupt routine. This makes it possible to set the processor in a sleep mode when the dispenser is not in use and decrease the power consumption.
More functions have been implemented in the dispenser and it is now more suitable for itsassignment. In the mean time it has been possible to reduce the size of the equipment. The chosen parts andcomponents make a good price function ratio. During the product development a lot of documentations have been done. Which make the dispensing equipment ready to be implemented in production.
Feszty, Katalin. "An economic appraisal of collection systems for waste electrical and electronic equipment (WEEE)." Thesis, Glasgow Caledonian University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289505.
Full textMd, Ali Umi Fazara. "Electrochemical separation and purification of metals from waste electrical and electronic equipment (WEEE)." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/7108.
Full textWeir, Edward A. "The impact of humidity and moisture on electronic equipment." Thesis, University of Sussex, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413314.
Full textChen, Jue. "Shielding characteristics of a commercial 19-inch rack-based cabinet." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/Chen_09007dcc803e6a55.pdf.
Full textVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed February 5, 2008) Includes bibliographical references (p. 82).
Larsson, Anders. "High frequency distortion in power grids due to electronic equipment." Licentiate thesis, Luleå : Luleå tekniska universitet/Tillämpad fysik, maskin- och materialteknik/Energiteknik, 2006. http://epubl.ltu.se/1402-1757/2006/63/LTU-LIC-0663-SE.pdf.
Full textLindström, Anton. "Design and implementation of a power distribution network for control equipment for electric vehicle charging." Thesis, Linköpings universitet, Fysik och elektroteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-137674.
Full textMartin, Alexander Dennis. "Risk assessment and the management of environmentally hazardous substances in electrical and electronic equipment." Thesis, University of Surrey, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492991.
Full textAsvestas, Ioannis. "Pyrolysis of Waste Electrical and Electronic Equipment (WEEE) Plastics for Energy and Material Recovery." Thesis, KTH, Energi- och ugnsteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-240087.
Full textSamhället strävar efter att ta itu med överutvinningen av jordens resurser på grund av den pågåendebefolkningsökningen. De ökade behoven hos energi och materiella resurser leder till en ökandemängd materialavfall, vilket inkluderar en mängd farliga föroreningar bland dem. Avfall av elektriskoch elektronisk utrustning utgör ett universellt problem på grund av sin stora mängd, ansvarig förmiljöföroreningar och många sjukdomar hos människor och djur. Den stora efterfrågan på elektriskoch elektronisk utrustning tillsammans med den korta livslängden på grund av dess föryngring ledertill utvidgningen av WEEE-avfallsströmmen. Energi och materialåtervinning från WEEE kanbetydligt minska över-extraktion av ädelmetaller och mineraler tillsammans med bränslen mot en merhållbar framtid. För närvarande finns det flera sätt att behandla WEEE och återvinna materialfraktioner tillsammansmed energi, såsom förbränning och deponering. Termokemisk behandling av WEEE erbjudermöjlighet att omvandla avfall till energi och material samtidigt, på ett miljövänligare sätt, vilketresulterar i en mer hållbar avfallshantering.I denna forskning undersöks pyrolys som en metod för energi och materialåtervinning från WEEE.Bromerad plast tillsammans med polyetylenplastblandningar har förvärvats från Stena och BolidenAB separationsprocesser. Båda materialen utsätts för pyrolys i en fast bädd och en skruvreaktor.Pyrolysprodukterna visar deras starka förhållande till pyrolys-temperaturen, reaktortypen och denursprungliga sammansättningen av råmaterialet. De utförda experimenten visar den uppåtgåendetrenden hos de gasformiga produkterna till förmån för oljorna som pyrolystemperaturökningen.Mängden fast substans förblev nästan vid samma nivåer genom temperaturintervallet, vilket innebäratt inga högre temperaturer behövs för att uppnå högre sönderdelningshastigheter för det testadematerialet. Oreagerat kol och oorganiska föreningar hamnar i den fasta återstoden som kan användassom bränsle vid förbränningsprocessen. Metallfraktionen kan separeras och återvinnas, eftersom denhar kommersiellt värde. De angivna huvudolja-föreningarna var styren, toluen, etylbensen, alfa-metylstyrenbensen, fenol.Föreningar såsom bensen, inden och p-xylen framställdes när de organiska föreningarnasönderdelades vidare under försöken vid de högsta temperaturerna. Klor och brominnehåll måstesepareras för att vara ett formidabelt bränsle.Mängden brännbara gaser ökade och deras energipotential med temperaturökningen. Den gasformigafraktionen består huvudsakligen av: H2, CO, CH4, CO2, C2H2, C2H4, C2H6, C3H6, C3H8. Bådegasformiga och oljeföreningar kan användas som bränslen i en förbränningsprocess. Mängdenhalogener mättes vid låga halter inom produktsortimentet, fastän deras separation är viktig.Pyrolys av WEEE är en lovande metod för energi och materialåtervinning som kan öka vårt samhälleshållbarhet.
Zhang, Chan. "The impact of and solutions to electronic and electrical waste management in Hong Kong SAR." HKBU Institutional Repository, 2010. http://repository.hkbu.edu.hk/etd_ra/1176.
Full textCorcoran, Samantha L. "Energy analysis of manufacturing equipment in a production setting." Thesis, Wichita State University, 2010. http://hdl.handle.net/10057/3475.
Full textThesis (M.S.)--Wichita State University, College of Engineering, Dept. of Industrial and Manufacturing Engineering.
Söderström, Charlotte. "Measuring microbial activity with an electronic tongue /." Linköping : Univ, 2003. http://www.bibl.liu.se/liupubl/disp/disp2003/tek816s.pdf.
Full textRodgers, Cheryl. "Producer responsibility and the role of industry in managing waste from electrical and electronic equipment." Thesis, University of Sussex, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264632.
Full textOrgill, Christopher H. "Plankton population density measurement by acousto-electronic testing." Thesis, Bangor University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278548.
Full textBar-Shalom, Doron. "Altitude effects on heat transfer processes in aircraft electronic equipment cooling." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/39011.
Full textCheng, Xiufang. "Recycling of plastics derived from end-of-life (EOL) electronic equipment." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3689.
Full textTitle from document title page. Document formatted into pages; contains viii, 75 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 71-73).
Preston, Trevor J. "The research and development of an electronic gauging system." Thesis, Loughborough University, 1985. https://dspace.lboro.ac.uk/2134/27600.
Full textYlä-Mella, J. (Jenni). "Strengths and challenges in the Finnish waste electrical and electronic equipment recovery system:consumers’ perceptions and participation." Doctoral thesis, Oulun yliopisto, 2015. http://urn.fi/urn:isbn:9789526209821.
Full textTiivistelmä Sähkö- ja elektroniikkalaitteiden (SE-laitteiden) tuotanto ja käyttö ovat kasvaneet merkittävästi viime vuosikymmenten aikana uusien teknologisten ratkaisujen ja sovellusten myötä. Nopea teknologinen kehitys, SE-laitteiden jokapäiväistyminen sekä elintason nousu ovat johtaneet tilanteeseen, jossa ne ovat helpommin vaihdettavissa kuin koskaan aikaisemmin. Tämän seurauksena myös sähkö- ja elektroniikkaromun (SE-romu, SER) määrä on nopeassa kasvussa. Vähentääkseen SE-romun aiheuttamia haitallisia ympäristö- ja terveysvaikutuksia sekä tehostaakseen hyödyllisten materiaalien talteenottoa SE-romusta Euroopan Unioni on ottanut käyttöön sähkö- ja elektroniikkalaitteisiin liittyviä direktiivejä. Tässä väitöskirjatutkimuksessa on tarkasteltu SER-direktiivin kansallista käyttöönottoa ja keräysverkoston kehittymistä Suomessa. Lisäksi kuluttajakäsitystä ja -tietoisuutta arvioitiin Oulun alueella toteutetulla kyselytutkimuksella. Työssä on arvioitu myös kuluttajien roolia käytöstä poistettujen SE-laitteiden kotivarastoinnissa ja sen vaikutuksia jätehierarkian toteutumiseen. Tulokset osoittavat, että kansallinen implementointi on onnistunut Suomessa; kansallinen lainsäädännöllinen perusta ja toimiva keräysjärjestelmä on saavutettu vain muutamassa vuodessa. Tutkimuksesta selviää, että kuluttajatietoisuus keräysjärjestelmän tärkeydestä ja sen olemassaolosta on hyvällä tasolla; matkapuhelinten korkea säilytysaste kotitalouksissa viittaa kuitenkin nykyisen järjestelmän riittämättömyyteen motivoida kuluttajia palauttamaan pientä SE-romua keräysjärjestelmään. SE-laitteiden elinkaaren vaikutusten tarkastelu osoittaa, että varastointi estää matkapuhelinten uudelleenkäyttöä ja estää jätteen synnyn ehkäisyä. Lisäksi se viivästyttää hyödyllisten materiaalien palautumista kierrätykseen vaarantaen myös jätehierarkian toteutumisen. Siksi koulutus ja tietoisuuden lisääminen ovat tärkeässä roolissa ympäristömyötäisemmän keräysjärjestelmän saavuttamiseksi Suomessa
Abu, Baker Muhammad Shahzad. "An integrated approach to planning of recycling activites for the waste from electrical and electronic equipment." Thesis, Loughborough University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500380.
Full textSENA, FABRICIO ROBERTO. "EVOLUTION OF MOBILE PHONES TECHNOLOGY AND THE IMPACT ON THE WASTE OF ELECTRICAL AND ELECTRONIC EQUIPMENT." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=22231@1.
Full textIn the last century, through new production processes, the industry has increased the variety and availability of products offered to the population, providing better quality of life. This has happened because the inception of series production has offered a greater supply of consumer goods, including the Electrical and Electronic Equipment (EEE). The evolution of electronics technology has provided, and will continue to provide a better quality of life than the one we used to have. However, the technology of these products is continuously evolving, and this brings advantages and disadvantages.
Flood, Ian. "Graph theoretic methods for radio equipment selection." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/50910/.
Full textKane, Amol S. "Refurbished electronics assembly equipment case studies for R & D and manufacturing /." Diss., Online access via UMI:, 2004. http://wwwlib.umi.com/dissertations/fullcit/1424172.
Full textDahlgren, Linus. "Case Study on Applications of Measurement Equipment for Dynamic Line Rating." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-284242.
Full textDynamisk gradering är ett alternativt sätt att gradera utrustning i elkraftsystem (luftledningar, transfor-matorer). Den rådande normen är en statisk gradering som är satt för att säkerställa att systemet håller sig inom säkerhetsgränserna även vid ofördelaktiga förhållanden. En dynamisk gradering beräknar lastbarheten kontinuerligt utifrån realtids eller prognosticerade mätvärden. Detta tillåter drift närmare de faktiska säkerhetsgränserna, vilket ökar utrustningens överföringskapacitet. Det är således ett attraktivt forskningsområde inom elkraftmarknaden, då utbyggnad av överföringskapacitet i nuläget ofta är förenat med stora kostnader och långa handläggningstider.I Oktober 2019 påbörjade Ellevio AB tillsammans med Heimdall Power ett pilotprojekt om dynamisk lastbarhet. Mätutrustning utvecklad av Heimdall Power monterades på en regionalledning, för att utforska potentialen hos både mätutrustningen och den dynamiska lastbarheten för ledningen i fråga. Det här examensarbetet har som en del i pilotprojektet haft som mål att besvara frågor gällande den potentiella ökningen i överföringskapacitet och de ekonomiska konsekvenserna av detta, samt analysera mätutrustningens tillförlitlighet och optimala placering längs ledningen.En metod för att finna de mest kritiska punkterna längs ledningen har tagits fram i samband med examensarbetet. Metoden är baserad på en litteraturstudie av tidigare metoder, och använder tre faktorer för att göra en riskskattning av varje span på ledningen. Metoden applicerades sedan på ledningen i pilotprojektet för att finna de mest kritiska punkterna för att placera mätutrustning.Analysen av mätutrustningens tillförlitlighet visade att temperaturmätningarna hos Heimdalls neuroner inte fungerade korrekt. Detta har senare bekräftats genom tester från Heimdall.Den potentiella överföringskapaciteten ökade i genomsnitt med 23% då dynamisk gradering implementerades. En positiv korrelation mellan den dynamiska graderingen och lastprofilen från vindkraftsproduktion i området har också påvisats. Den ekonomiska analysen visade att det potentiella ekonomiska värdet från denna ökning beror på mängden nyetablering av vindkraft, och att värdet från implementering av dynamisk gradering då som mest är 4.1 MSEK.Sammanfattningsvis har det här examensarbetet påvisat både möjligheter och utmaningar kring dynamisk gradering. Vidare behöver ovanstående analyser göras ånyo då mer mätdata samlats in, för att kunnabekräfta eller förkasta slutsatserna i rapporten.
Charles, Rhys G. "Assessment and exploitation of the inherent value of Waste Electrical and Electronic Equipment (WEEE) for circular economy." Thesis, Swansea University, 2018. https://cronfa.swan.ac.uk/Record/cronfa39601.
Full textOverton, William Ernest. "Digital Circuit-Level Emulation of Transistor-Based Guitar Distortion Effects." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10566.
Full textDongale, Prasad J. "Equipment condition assessment and its importance in estimation and prediction of power system reliability." Thesis, WIchita State University, 2008. http://hdl.handle.net/10057/2027.
Full textThesis (M.S) - Wichita State University, College of Engineering, Dept. of Electrical and Computer Science Engineering
Dongale, Prasad J. Jewell Ward. "Equipment condition assessment and its importance in estimation and prediction of power system reliability." A link to full text of this thesis in SOAR, 2008. http://hdl.handle.net/10057/2027.
Full textVasudevan, Vivek. "Evaluation of the separation involved in recycling end-of-life (EOL) electronic equipment." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=45.
Full textTitle from document title page. Document formatted into pages; contains xi, 92 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 74-76).
Piemontesi, Fulvio Rolando. "A micro computer based test set for telecontrol equipment." Thesis, Cape Technikon, 1986. http://hdl.handle.net/20.500.11838/2178.
Full textA micro computer based SELTA test set, that simulates the Selta master was developed and tested to display the following: Breaker status (open/close), alarms and analogue quantities as Volts, Amps, Freq etc. The unit is also capable of sending remote controls to the SELTA remote thus changing the breaker status.
Kofer, Wolfgang. "Decision aid for planning the maintenance of electronic equipment in the German Army." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23608.
Full textIn the early stage of the Weapons Acquisition Process (Concept Exploration and Concept Demonstration/Validation Phases) no exact and reliable data are available about expected Mean Times Between Failures (MTBF) and Mean Times to Repair (MTTR) for both the components of a new system or the new system itself. Nevertheless, appropriate decisions have to be made about the number of maintenance facilities at certain military command levels, about the needed quantity of (military and/or civilian) maintenance personnel, and about adequate spare stock levels at the appropriate locations. Wrong planning in this early stage can cause a degradation of the new system's future availability. This is problematic especially with electronic equipment, because maintenance personnel have to be highly specialized, and can not be replaced and retrained as easily as support personnel for trucks or tanks. A decision aid for the early stages of the acquisition process is needed that offers insight into the behavior of a multi-indenture level electronic system within a three echelon maintenance system, develops alternatives for upcoming decisions, and finally provides information about sensitive factors and their possible tradeoffs, essentially used in budgetary discussions. The purpose of this thesis is the exact definition of all relevant factors pertaining to the necessary decisions, the review of existing models and tools and their review for applicability. Because the modification of existing programs can not solve the whole scope of the problem due to the use of early generation computer languages, and due to the necessarily new and different approach to the topic, a new simulation program has to be developed. Using object oriented simulation language MODSIM-II, first steps towards this program are made, but remain to be improved and completed in further research work.
Viljoen, Daniël Albertus. "A process model for the development of airborne electronic equipment / by D.A. Viljoen." Thesis, North-West University, 2008. http://hdl.handle.net/10394/3699.
Full textThesis (M.Ing. (Computer and Electronical Engineering))--North-West University, Potchefstroom Campus, 2009.
McGrath, Steven J. "The electromagnetic pulse environment and its influence on tactical electronic and communications equipment." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23655.
Full textMichel, Florence. "Transient numerical computation of the temperature of the electronic equipment in passengers cars." Valenciennes, 2009. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/0c0e0027-679d-4983-a115-263443a25c8a.
Full textIn order to ensure a reliable operation of the electronic devices of a passenger car, its thermal situation is successively evaluated during each phase of the development process. Of particular interest is to predict the time period, during which the electronic system works within its optimal temperature range, while it is subjected to critical operating conditions. In order to compute its temperature under time-dependent thermal loads, different numerical models and computational methods have been developed and validated in the present study. In a first part, several innovative coupling codes strategies for the computation of the different heat transfer modes are proposed according to the convection boundary conditions and based on a system analysis. For reasonable computing times in the development process, a steady-state approach is used to solve the convective flow. In a second part, numerical models for the computation of the convective heat transfer mode are examined with test cases, in particular in view of mesh requirements and turbulence modeling, and verified in comparison with literature. In the third and last part, the co-simulation strategies are verified by means of two complex electronic systems, on the one hand a lead-acid battery situated in a spare-wheel cavity, on the other hand a sound amplifier assembled in cavity located between the engine compartment and the cabin. Finally, the efficiency and the reliability of both co-simulation strategies are discussed for implementation in the digital development process
Michel, Florence. "Transient numerical computation of the temperature of the electronic equipment in passenger cars." Göttingen Cuvillier, 2009. http://d-nb.info/1000128997/04.
Full textKorampally, Venumadhav. "An instrumentation system design for the testing of a micro sensing mechanism /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1426078.
Full textAustin, Blanca L. "Performance analysis and scaling opportunities for bulk CMOS inversion and accumulation devices." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/15433.
Full textKunrath, Jorge Luiz. "Resíduos eletroeletrônicos : um diagnóstico da cadeia de processamento." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/118849.
Full textRecognized as a world problem, the increasing volume of electronic waste gives rise to as much concern as the practice of discarding this equipment because, in its fabrication, toxic metals are used, which causes possible health risks for human beings and for the environment. Electronic equipment waste also has precious metals within its composition, such as gold and silver, besides significant levels of copper, which represents a source of commercial interest in terms of the recuperation of these materials and a subsequent reduction in the necessity of exploration of these natural resources. These factors, together with the rapid transformation into obsolescence and later disposal of the equipment, has stimulated a complex production chain made up of companies who collect, separate, break up, recuperate, store and recycle these materials. In this interchange, various interactions occur between the companies and the society with a consequent social, economic and environmental impact. The present research has made a diagnosis of one part of this chain, as in the “waste processors”, that means the companies which carry out the collection, storage, separation and transformation of the equipment. The majority of the processes are manual with a few cases of mechanical processes in some stages. They operate at the pre-processing stage as input suppliers for the rest of the chain. These companies do not carry out the more complex procedures of recycling, such as pyrometallurgy, hydrometallurgy or electrometallurgy. To achieve the proposed objective, a semi-structured questionnaire was used, directed towards previously selected companies on a national scale. The collected data were tabled and analyzed within their qualitative and quantitative context with a cross-check information. The results of the research produced information in relation to the productive system, the volume which is processed, the economic aspects and the sector management. It was possible to identify the various levels of maturation and management, where some companies operate with a consistent administrative structure, knowledge, compliance with the law and environmental consciousness but where others operate with deficient management and a lack of formality. They have an average capacity of waste processing of residues of 100 tons per month with 50% utilization of this capacity. The recycled part of the waste represents an average of 80% of the total amount of collected material. The sectors that more generate this kind of waste are the industrial sector, with 41.25%, followed by the commercial and domestic sectors. Within an economic context, 70% of the income originates from Printed Circuit Boards (PCBs). Regarding the commercialization of the products, 75.39% are destined for other recycling plants in both Brazil and abroad. The collected data were not satisfactory in relation to the processing costs because of the low number of replies, demonstrating that the questions in relation to this could have been better formulated or the information collecting method should be improved. The main contributions resulting from this study are: create a vision of the volume flux of processed waste and allow for comprehension of the economical interactions between the various interested parties and the difficulties which the sector faces to achieve a sustainable management system for electronic waste.
Price, Alfred W. "The evolution of electronic warfare equipment and techniques in the USA, 1901 to 1945." Thesis, Loughborough University, 1985. https://dspace.lboro.ac.uk/2134/7410.
Full textArteta, Bertha M. "A heuristic algorithm to generate test program sequences for moving probe electronic test equipment." FIU Digital Commons, 2001. http://digitalcommons.fiu.edu/etd/1317.
Full textNie, Qihong. "Experimentally validated multiscale thermal modeling of electronic cabinets." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26492.
Full textCommittee Chair: Joshi, Yogendra; Committee Member: Gallivan, Martha; Committee Member: Graham, Samuel; Committee Member: Yeung, Pui-Kuen; Committee Member: Zhang, Zhuomin. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Al-Meshaiei, Eisa Abdullah Eisa S. "An expert system for material handling equipment selection." Thesis, University of Warwick, 1999. http://wrap.warwick.ac.uk/36429/.
Full textSielinou, Patrick Tchankue. "An intelligent multimodal interface for in-car communication systems." Thesis, Nelson Mandela Metropolitan University, 2011. http://hdl.handle.net/10948/1495.
Full textBrundrett, David L. "Analysis, design, and applications of subwavelength diffraction gratings." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/15370.
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