Дисертації з теми "Unit: Engineering at Victoria"
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Lundström, Linnéa, and Sara Nordlund. "Exploring Co-management : A Minor Field Study on Lake Victoria Beach Management Unit in Ggaba, Kampala, Uganda." Thesis, Linköpings universitet, Tema Miljöförändring, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-128701.
Повний текст джерелаGemsamma resurser så som vattendrag, skogar och atmosfären är komplexa att hantera eftersom flera aktörer är involverade och påverkas av resursanvändningen. Ett sätt att hantera gemensamma resurser är genom samförvaltning. Samförvaltning är en decentraliserad förvaltningsmetod som möjliggör ett samarbete mellan den lokala och statliga nivån vid beslutsfattande. Omkring Victoriasjön realiseras samförvaltning genom så kallade Beach Management Units (BMUs). Dessa utgörs av 1087 stycken varav en BMU är lokaliserad i Ggaba, Kampala, Uganda. Syftet med denna studie är att belysa fördelar och brister kopplade till samförvaltning av fiske. Vidare syftar studien till att undersöka om och hur aspekter inom hållbar utveckling kan tacklas genom det decentraliserade styret av fiske. Data insamlades genom sex stycken kvalitativa, semistrukturerade intervjuer. Dessutom gjordes en kvalitativ innehållsanalys av två BMU-riktlinjedokument, vilka representerar den centrala nivån. Det empiriska materialet visade att Ggaba BMU utgör en plattform för strukturering, kontroll och samarbete. Den lokala nivåns syn på samförvaltning inom fiske verkar överensstämma med den centrala nivåns avsikt av samförvaltning. Resultatet indikerar även att BMUn har påverkat ekonomiska, sociala och ekologiska aspekter i Ggaba på ett positivt sätt. Problem med korruption och olagligt fiske identifierades dock, vilka verkar begränsa BMUns funktion och möjligheterna till samförvaltning.
Tutam, Mahmut. "Configuring Traditional Multi-Dock, Unit-Load Warehouses." Thesis, University of Arkansas, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10839559.
Повний текст джерелаThe development of expected-distance formulas for multi-dock-door, unit-load warehouse configurations is the focus of the dissertation. From formulations derived, the width-to-depth ratios minimizing expected distances are obtained for rectangle-shaped, unit-load warehouse configurations. Partitioning the storage region in the warehouse into three classes, the performance of a multi-dock-door, unit-load warehouse is studied when storage regions can be either rectangle-shaped or contour-line-shaped.
Our first contribution is the development of formulas for expected distance traveled in storing and retrieving unit loads in a rectangle-shaped warehouse having multiple dock doors along one warehouse wall and storage racks aligned perpendicular to that wall. Two formulations of the optimization problem of minimizing expected distance are considered: a discrete formulation and a continuous formulation with decision variables being the width and depth of the warehouse for single- and dual-command travel. Based on dock door configurations treated in the literature and used in practice, three scenarios are considered for the locations of dock doors: 1) uniformly distributed over the entire width of a wall; 2) centrally located on a wall with a fixed distance between adjacent dock doors; and 3) not centrally located on a wall, but with a specified distance between adjacent dock doors.
Our second contribution is the investigation of the effect on the optimal width-to-depth ratio (shape factor) of the number and locations of dock doors located along one wall or two adjacent walls of the warehouse. Inserting a middle-cross-aisle in the storage area, storage racks are aligned either perpendicular or parallel to warehouse walls containing dock doors. As with the warehouse having storage racks aligned perpendicular to the warehouse wall, discrete and continuous formulations of the optimization problem are developed for both single- and dual-command travel and three scenarios for dock-door locations are investigated.
Our final contribution is the analysis of the performance of a unit-load warehouse when a storage region or storage regions can be either rectangle-shaped or contour-line-shaped. Particularly, we consider two cases for the locations of dock doors: equally spaced over an entire wall of the warehouse and centrally located on a wall, but with a specified distance between adjacent dock doors. Minimizing expected distance, the best rectangle-shaped configuration is determined and its expected distance is compared with the expected distance in its counterpart contour-line-shaped configuration.
Bork, John R. "Reverse Engineering a Microcomputer-based Control Unit." Bowling Green State University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1120167127.
Повний текст джерелаSandberg, Daniel. "Automatiserad unit testning." Thesis, Blekinge Tekniska Högskola, Avdelningen för telekommunikationssystem, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3186.
Повний текст джерелаDet första en utvecklare tänker på när man hör de tre magiska orden automatisk unit testning är att han äntligen slipper sitta med den tråkiga testningen. Medan chefen och ekonomiansvarige börjar räkna på hur mycket pengar de kan spara efter de sagt upp halva testavdelningen. Tyvärr får båda tänka om då oftast den automatiska testningen har lika lång utvecklingstid men förhoppningvis om den blir lyckad så förbättrar den kodkvalitén. Vilket kan vara minst lika mycket värt som att man sparar några kronor i minskade personalkostnader.
Ganti, Anand 1975. "Mismatch capacity per unit cost." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9465.
Повний текст джерелаIncludes bibliographical references (p. 48).
The mismatch channel capacity per unit cost represents the maximum number of bits per unit cost that can be transmitted reliably across a channel under receiver mismatch conditions. It's reciprocal is the minimal cost of transmitting a bit reliably under these conditions. We derive lower bounds for the mismatch channel capacity per unit cost and discuss some of its properties.
by Anand Ganti.
S.M.
Rahmqvist, Elin. "On stochastic unit commitment for thermal power plants." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-285519.
Повний текст джерелаKlimatförändringarna är ett faktum, en kris som hotar varje land, ekonomi och människa.För att förebygga denna kris måste utsläppen av växthusgaser minska dramatiskt. 72 % av de globala utsläppen av växthusgaser år 2016 kom från energiproduktion där värme och elektricitet stod för 42 % av dessa utsläpp. Trots detta växte kolkraften med 28% år 2018 för att kunna möta den ökande efterfrågan på elektricitet. Det är därför av yttersta vikt att dessa resurser används på ett så e↵ektivt sätt som möjligt. En bra och exakt korttidsplanering av kraftsystem kan minska utsläppen och kostnaderna.Målet med denna studie är att implementera stokastisk last i korttidsplaneringen för ett mindre elkraftsystem med 11 enheter. Detta kräver en robust metod som begränsar beräkningstiden för att säkerställa kontinuerlig och säker drift av elkraftsystemet. Analysen måste utvärdera tillförlitligheten, ekonomiska e↵ekterna och beräkningstiden för att lösa det stokastiska korttidsplaneringsproblemet.Ett testsystem har skapats i MATLAB för att utvärdera den stokastiska kontra deterministiska korttidsplaneringsproblemet. Scenarier för det stokastiska korttidsplaneringen har genererats genom att använda en stationär Markov-kedja för att generera felen i lastprognosen och sedan använda Fast Forward Selection metoden för att minska antalet scenarier för att minimera beräkningsinsatsen. Stokastisk korttidsplanering har sedan utvärderats med värdet av den stokastiska lösningen för ekonomisk analys. Sannolikheten för bortkoppling av last samt icke levererad energi har beräknats för att utvärdera tillförlitligheten.En stokastisk metod ger en mer robust lösning men kan vara dyrare vad gäller kostnader. Fem scenarier var det optimala valet för den stokastiska korttidsplaneringsformuleringen. Ö kande av antal scenarier förbättrade inte tillförlitligheten och resulterade i en dyrare lösning. Slutsatsen i detta arbete kan kännas motsägelsefullt då den deterministiska metoden visar på lägre kostnader medans den stokastiska är mer robust. Detta belyser en av utmaningarna i elkraftsystem. Ett mer robust system är vanligtvis dyrare och därför måste aktörerna i systemet bestämma vad som är mest önskvärt i det specifika systemet. Ett mer tillförlitligt men dyrare system eller ett mindre pålitligt och billigaresystem.
Ncube, Glen. "The making of rural health care in colonial Zimbabwe : a history of the Ndanga Medical Unit, Fort Victoria, 1930-1960s." Doctoral thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/11490.
Повний текст джерелаIncludes bibliographical references.
This thesis adopts a social history of medicine approach to explore the contradictions surrounding a specific attempt to develop a rural healthcare system in south-eastern colonial Zimbabwe (Southern Rhodesia) from the 1930s to the 1960s. Influenced by a combination of healthcare discourses and models, in 1930, the colony’s new medical director formulated the first comprehensive rural healthcare delivery plan, premised on the idea of ‘medical units’ or outlying dispensaries networked around rural hospitals. The main argument of the thesis is that the Ndanga Medical Unit, as this pioneer medical unit was known, was a variant of a typical colonial project characterised by tensions between innovative endeavours to control disease on the one hand, and the need to fulfil broader colonial ambitions on the other.
Kepper, James H. IV. "MEMS IMU inertial measurement unit one-way-travel-time inertial measurement unit autonomous underwater vehicles." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113756.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 83-87).
Recent advances in acoustic navigation methodologies are enabling the way for AUVs to extend their submerged mission time and maintain a bounded XY position error. Additionally, advances in inertial sensor technology have drastically lowered the size, power consumption, and cost of these sensors. Nonetheless, these sensors are still noisy and accrue error over time. This thesis builds on the research and recent developments in single beacon one-way-travel- time (OWTT) acoustic navigation and investigates the degree of bounding position error for small AUVs with a minimal navigation strap-down sensor suite, relying mostly on a consumer grade microelectromechanical system (MEMS) inertial measurement unit (IMU) and a vehicle's dynamic model velocity. An implementation of an Extended Kalman Filter (EKF) that includes IMU bias estimation and coupled with a range filter, is obtained in the field on two OceanServer Technology, Inc. Iver2 AUVs and one Bluefin Robotics SandShark [mu]AUV. Results from these field trials on Ashumet Pond of Falmouth, Massachusetts, the Charles River of Cambridge, Massachusetts, and Monterey Bay near Santa Cruz, California show a navigation solution accuracy comparable to current standard navigation techniques.
by James H. Kepper, IV.
S.M. in Oceanographic Engineering
Hansson, Johan, and Christian Bothén. "Design and construction of electronic control unit." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-353124.
Повний текст джерелаMachuca, Julían, and Thomas Tuvesson. "PCB design of Power Distributor Unit (PDU)." Thesis, Uppsala universitet, Institutionen för elektroteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-415474.
Повний текст джерелаKattoua, Khaled. "Floating production storage offloading unit structural fatigue analysis." Thesis, City University London, 2003. http://openaccess.city.ac.uk/7657/.
Повний текст джерелаGungor, Mustafa Kemal. "A Programmable Control Unit For Industrial Applications." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/772764/index.pdf.
Повний текст джерелаRojas, Folkers Eduardo. "Heat extraction for the CSPonD thermal storage unit." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/65312.
Повний текст джерела"February 2011." Cataloged from PDF version of thesis.
Includes bibliographical references (p. 78).
Three coiled tube heat exchanger prototypes were designed to extract heat from containers holding 0.5 kg, 2.3 kg, and 10.5 kg of Sodium Nitrate-Potassium Nitrate salt. All of the prototypes were left with an open surface free to undergo radiation losses and surface convection. The first objective was to measure the power extraction over time for each prototype. Coiled tube heat exchangers were modeled as a tube with a constant wall temperature. Air is used as the working fluid, with a maximum Reynolds number of 2000 at a maximum flow rate of 10 standard liters per minute (SLPM) at air flow temperatures above 900°C. The accuracy of the power extraction model for the three prototypes in increasing order: 46 %, 35 %, and 43 % of the measured data. The duration of power extraction with an open top container for the first (P-1), second (P-l1), and third (P-II) prototype respectively are: 14 min, 29 min, 45 min producing an average power of 22 W, 23 W, and 22 W respectively. To compare across the prototypes, the data provided is for bath bulk temperatures starting at 330°C and ending at 275' C. Prototype three produced 25 W for 123 minutes for the same temperature change in the bulk temperature (330° to 275°C) with the lights off and a thermal lid, to reduce radiation and surface convection losses. The thermal lid improved the extraction duration by a factor of four. The second objective was to characterize the thermal loss rate (W) of the each prototype. The thermal loss rate model is accurate within 28.9 % (P-1), 28.7 % (P-11), and 24.7 % (P-III) of the measured values. There is evidence of convection cells in prototype two and three. A high temperature Particle Image Velocimetry (PIV) system has been proposed to measure the magnitude of the convection cells, and a proof of concept setup has been tested. Particles native to the molten salt are illuminated using a Class 3b laser (power <5mW). The laser beam is converted into a plane using a polypropylene conical centrifuge tube filled with water.
by Folkers Eduardo Rojas.
S.M.
De, Heer Derrill Humanities & Social Sciences Australian Defence Force Academy UNSW. "Victoria per mentum : psychological operations conducted by the Australian Army in Phuoc Tuy Province South Vietnam 1965-1971." Awarded by:University of New South Wales - Australian Defence Force Academy. Humanities & Social Sciences, 2009. http://handle.unsw.edu.au/1959.4/40326.
Повний текст джерелаStröm, Joakim, and Jakob Sjölund. "Unit Test of Capsules using Google Test Framework." Thesis, Linköpings universitet, Programvara och system, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-125232.
Повний текст джерелаErol, Umit Levent. "DEVELOPMENT OF A LOWER EXTREMITY EXOSKELETON POWER UNIT." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1619385500249639.
Повний текст джерелаVlachos, Georgios M. Eng Massachusetts Institute of Technology. "Multi-unit auction revenue with possibilistic beliefs." Thesis, Massachusetts Institute of Technology, 2017. https://hdl.handle.net/1721.1/122392.
Повний текст джерелаThesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (page 25).
The revenue of traditional auction mechanisms is benchmarked solely against the players' own valuations, despite the fact that they may also have valuable beliefs about each other's valuations. Not much is known about generating revenue in auctions of multiple identical copies of a same good. (In particular the celebrated Vickrey mechanism has no revenue guarantees.) For such auctions, we (1) put forward an attractive revenue benchmark, based on the players' possibilistic about each other, and (2) construct a mechanism that achieves such benchmark, assuming that thplayers are two-level rational (where the rationality is in the sense of Aumann).
by Georgios Vlachos.
M. Eng.
M.Eng. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
Rasmussen, Nichlas. "Operator unit simulator." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-45676.
Повний текст джерелаThis thesis was developed as an assignment from Atlas Copco where the goal was to develop software that could simulate an OU (Operator Unit) in a PC environment. Atlas Copco’s proprietary radio-control system for mining vehicles consists of a transmitter, called OU, and a receiver, called MU (Machine Unit). An OU is a controller with controls in the form of buttons, joysticks and switches and with indicators in the form of LEDs and display. To ensure that an OU only can communicate with a specific MU and vice versa the units’ radio modules must be paired together through a process called “learn link”, that is performed by connecting the units with a CAN-cable. By using an OU simulator for MU production tests it would be easier to perform some tests, such as internal errors and warnings, and it would be possible to include tests that are impossible to do with OU hardware, such as intentionally send a miscalculated checksum, to examine the MU’s response. The OU simulator should have a graphical user interface and by connecting a radio card to the PC it should be able to send and receive data from an MU. It should also be able to perform “learn link”. The final product was developed using C# together with an XP-inspired development method.
Kopfinger, André, and Daniel Ahlsén. "Identification of absolute orientation using inertial measurement unit." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-39713.
Повний текст джерелаChenna, Subbanagari Uday Kumar Reddy. "A special unit to speed up a DSP processor." Thesis, California State University, Long Beach, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10108176.
Повний текст джерелаDigital Signal Processing (DSP) processors are used in personal computers, smart phones, multimedia devices, etc. Traditional DSP processors with custom logic must meet the demand for increased processing speed. The main aim of the project is to design a 32-bit integer arithmetic processor and to implement it. This design has three major processing features. First, the speed must be optimized by using a hazard free control unit. Second, it must have a two stage pipeline. Third, a single cycle multiply accumulator is utilized. The main advantage of the two stage pipeline is that it can manipulate the instructions, and it can produce correct cycle timing even though there may be hazards. A reduced instruction set is used in this design. A filtering operation is included in order to differentiate the DSP processor from a traditional processor. The processor is designed using Harvard architecture in which both data memory and program memory are accessed simultaneously. This design increases the processing speed by 30%.
Abraham, Justin Kuruvilla. "Study of the TR Synchronization and Video Conversion Unit." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/14137.
Повний текст джерелаAnctil, Benoit. "Signal classification issues in motor unit number estimation." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31043.
Повний текст джерелаSharp, David. "Systems Engineering Self Assessment of an Air Force Acquisition Unit." Digital Commons at Loyola Marymount University and Loyola Law School, 2009. https://digitalcommons.lmu.edu/etd/429.
Повний текст джерелаBeniušis, Mantas. "Kelto „Victoria Seaways“ šilumokaičio ir aušinimo vamzdyno virpesių tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140616_155131-41138.
Повний текст джерелаM. Beniušis “Vibration research of heat exchanger and cooling piping in Victoria Seaways ferry”. Final work of the master studies of ship design and building program. Academic supervisor Dr. P. Mažeika, Klaipeda University: Klaipėda, 2014. Keywords: vibrations, ship, ferry, vibration research, heat exchanger. The theoretical part of the final work describes the classification of vibration, main excitations of vibration and analyses various methods for reduction of the vibration level on board and vibration calculation. The experimental part presents the vibration measurement methodology in the cooling systems of Victoria Seaways and Athena Seaways ferries. It examines the results of measurements carried out during Klaipėda-Kiel-Klaipėda trip and identifies the reasons for the recent level of vibration in the analysed cooling system. The final part of the work contains the conclusions and recommendations.
Jain, Sheetal A. 1980. "Low-power single-precision IEEE Floating-point unit." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/87426.
Повний текст джерелаMichelson, Jonathan E. (Jonathan Erik). "Design and optimization of Fugu's user communication unit." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/39387.
Повний текст джерелаIncludes bibliographical references (leaves 45-46).
by Jonathan E. MIchelson.
M.Eng.
Lou, Ip Keong. "Unit production control system for garment industry." Thesis, University of Macau, 2002. http://umaclib3.umac.mo/record=b1445660.
Повний текст джерелаNayakanti, Nigamaa. "Flexigami : folded polygonal unit cells for deployable metamaterials and mechanisms." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104281.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 83-85).
Deployable and transformable structures are of broad interest for applications including satellites and space exploration, temporary shelters, packaging, transportation, robotics and medical devices. One emerging approach to scalable fabrication of such structures involves the general concept of Origami-inspired design along with cutting, folding, and fastening of sheet materials. However, contrasting the classical approach of modeling Origami structures as having perfect hinges and rigid panels, consideration of the finite bending and rotational stiffness of these elements is essential to understand their constituent mechanics. Moreover, meta-materials and functional structures having fundamentally new mechanical properties can be designed this way. We present the design, fabrication and mechanics of a novel, deployable cellular material, which we call Flexigami. The unit cell takes the form of two parallel regular polygons, connected by a circuit of diagonally creased panels. Upon compression, individual unit cells transform either gently or abruptly between two stable equilibrium states depending on the interplay between hinge and panel properties. The mechanical behavior of each unit cell can be deterministically designed via geometry, dimensions and topology of the panels and hinges. Individual unit cells can collapsed reversible to less than 10% of their deployed volume. Within this transition regime, the force-displacement curve of each cell can be tuned to exhibit a smooth compression behavior or an instability followed by a self-reinforcing response. We use finite-element models complemented by analytical and computational analysis of the results to understand the importance of different mechanical properties of constituent hinges and panels and also demonstrate the fabrication of flexigami cells and mechanisms in various structural materials. Finally we present different mechanisms and their subsequent applications.
by Nigamaa Nayakanti.
S.M.
Warren, David S. "The design of a deep space transponder regenerative ranging unit." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/35026.
Повний текст джерелаSung, Ho-Joon. "Optimal maintenance of a multi-unit system under dependencies." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26511.
Повний текст джерелаCommittee Chair: Schrage, Daniel; Committee Member: Loewy, Robert; Committee Member: O'Neill, Gary; Committee Member: Saleh, Joseph; Committee Member: Volovoi, Vitali. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Armitage, Neil Philip. "A unit stream power model for the prediction of local scour." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52716.
Повний текст джерелаENGLISH ABSTRACT: Local scour is the erosion of a riverbed resulting from the flow of the river around an obstacle. It is a principal cause of failure of bridges and other hydraulic structures. Current design practice relies on the use of empirical formulae that are often extremely inaccurate, or on the use of physical models that are very expensive. Recent advances in the power of microcomputers have however made numerical simulation increasingly attractive. One obstacle to numerical simulation though is that there is no general agreement on the concept of incipient motion, that critical point at which motion - and hence scour - begins. In this dissertation, the unit stream power model developed by Rooseboom (1992) is extended to handle the complex three-dimensional flow conditions that pertain close to the riverbed in the vicinity of an obstacle. The relationship between unit stream power (the dissipation function) and the Movability Number (the ratio of the shear velocity to the terminal settling velocity of the critical sediment particles) is clearly indicated. Since incipient motion is probabilistic in nature, a relationship was established between the Movability Number and the intensity of motion with allowance for bed-slope and relative depth. An extension of this work resulted in a new bed-load transportation equation that could be used to determine the rate of scour development. Physical modelling in a laboratory flume aided the selection of suitable critical conditions for the onset of scour. The usefulness of the above-mentioned relationships was then demonstrated through the construction of a simple mathematical model of scour and deposition around a structure. This model was used in conjunction with commercially available computational fluid dynamics (CFD) software to predict the scour potential around typical engineering structures. Physical model data was obtained for four situations, and the measured scour was compared with that predicted by the numerical model. There was reasonable agreement between the different models and such differences as there were could be readily attributed to constraints on the numerical model, in particular the lack of a free-surface routine and the coarseness of the grid. This dissertation has opened up a new method for the prediction of local scour that could be readily extended to include all types of scour. With the advent of increasingly fast computers, it could become a useful engineering tool that would assist engineers in the design of safe and cost-effective foundations for hydraulic structures.
AFRIKAANSE OPSOMMING: Plaaslike uitskuring is die erosie van 'n rivierbed as gevolg van vloei verby 'n obstruksie. Dit is 'n belangrike oorsaak van die swigting van brfïe en ander hidrouliese strukture. Bestaande ontwerppraktyk berus op empiriese vergelykings wat dikwels hoogs onakkuraat is, of op fisiese modelle, wat baie duur is. Numeriese simulasie het die afgelope tyd 'n al hoe meer aantreklike opsie geword danksy die snelle toename in die kapasiteit van mikro-rekenaars. 'n Struikelblok met numeriese simulasies is die gebrek aan konsensus oor die konsep van begin-van-beweging, daardie kritieke toestand waarby beweging en derhalwe uitskuring begin. In hierdie proefskrif is die eenheidstroomdrywing model, ontwikkel deur Rooseboom (1992), uitgebrei om die komplekse drie-dimensionele vloeitoestande, wat teenaan die rivierbodem verby 'n obstruksie heers,te hanteer. Die verwantskap tussen Eenheid Stroomdrywing (Dissipasiefunksie) en die Beweeglikheidsgetal (verhouding tussen sleursnelheid en die ewewigvalsnelheid van die kritieke sedimentpartikels ) is duidelik uitgewys. Aangesien begin van beweging probabilisties van aard is, is die verwantskap bepaal tussen die Beweeglikheidsgetal en die Intensiteit van Beweging, met voorsiening vir bodernhelling en relatiewe diepte. Verdere uitbreiding het gelei tot 'n nuwe bedvrag vervoervergelyking wat gebruik kan word om die tempo van uitskuring te bepaal. Kritieke toestande, waarby uitskuring begin, is met fisiese modelle in die laboratorium gekwantifiseer. Die bruikbaarheid van bogenoemde verbande is gedemonstreer deur die ontwikkeling van 'n eenvoudige wiskundige model van uitskuring en afsetting rondom 'n struktuur. Hierdie model is saam met bestaande kommersiële sagteware vir vloeidinamika berekenings (CFD) ingespan om uitskuringspotensiaal rondom tipiese ingenieurstrukture te voorspel. Fisiese modelmetings van uitskuring vanaf vier uitlegte is vergelyk met die numeries voorspelde waardes. Bevredigende ooreenkoms is gevind en verskille kon geredelik gewyt word aan beperkings van die numeriese model, veral die gebrek aan' n vryvlakroetine en die growwe maas. Die proefskrif stel 'n nuwe metode vir die voorspelling van uitskuring daar wat geredelik uitgebrei kan word na ander vorms van uitskuring. Met die ontwikkeling van al vinniger rekenaars kan dit 'n nuttige hulpmiddel vir ingenieurs word om veilige en koste-doeltreffende fondamente in waterlope te ontwerp.
Altwieb, Miftah Omar. "Modelling and optimisation of heat exchanger integrated in fan coil unit." Thesis, University of Huddersfield, 2018. http://eprints.hud.ac.uk/id/eprint/34544/.
Повний текст джерелаLiu, Haiyong 1972. "An experimental investigation of a passive cooling unit for nuclear plant containment." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/85273.
Повний текст джерелаIncludes bibliographical references (leaves 84-86).
by Haiyang Liu.
S.M.
Robertson, Leanne. "Development of an electronic control unit for the T63 gas turbine." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/9145.
Повний текст джерелаFundamental research has been undertaken at the SASOL Advanced Fuels Laboratory to investigate the effects of the chemistry and physical properties of both conventional and synthetic jet fuels on threshold combustion. This research was undertaken using a purpose built low pressure continuous combustion test facility. Researchers at the laboratory now wish to examine these effects on an aviation gas turbine in service for which “off-map” scheduling of fuel to the engine would be required. A two phase project was thus proposed to develop this capability; the work of this thesis embodies Phase I of that project.
Zhuang, Fulin 1956. "Optimal generation unit commitment in thermal electric power systems." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75896.
Повний текст джерелаTwo optimization approaches, Lagrangian relaxation and simulated annealing, are explored in this thesis for efficient and near-optimal unit commitment.
Lagrangian relaxation combines the solution of the dual of the unit commitment problem with feasibility search to obtain primal feasible solutions. The feasibility search is necessary because a solution to the dual seldom solves the primal, and because little theory is available to bridge the optimal dual and primal solutions. In this thesis, several new feasibility search procedures to find a near-optimal primal feasible solution from the dual solution are developed and tested. These procedures are independent of the data constituting different problem instances, and are more rigorous and systematic than the existing ones. With these procedures, Lagrangian relaxation is successfully and efficiently applied to both single and multiple area unit commitment.
Simulated annealing exploits the resemblance between a minimization process and the cooling of a molten metal. The method generates feasible solution points randomly and moves among these points following a strategy which leads to a global minimum in a statistical sense. Simulated annealing is very flexible for handling diverse and complicated constraints, such as those typical of the unit commitment problem. Simulated annealing is analyzed, evaluated and implemented for unit commitment in this thesis.
Five major algorithms, proposed in this thesis for unit commitment and reserve-constrained economic dispatch, are extensively tested and compared by numerical simulation on sample power systems of 10 to 100 units. The simulation results show the efficiency of the tested algorithms for large-scale unit commitment and demonstrate the general applicability of simulated annealing. A comparison with the priority list method and a study of the convergence rates of the subgradient type algorithms are also included in the simulation.
Hosseini-Doust, Zahra. "Mapping Gaussian belief propagation on the graphics processing unit." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121472.
Повний текст джерелаAvec l'introduction d'unités de traitement graphiques programmables (GPU) durant la dernière décennie, les systèmes informatiques hétérogènes sont devenus plus populaires. On pense qu'en exploitant la puissance des nombreux cœurs du GPU, de nombreuses applications pourront bénéficier de meilleures performances dans un avenir rapproché. Cependant, dans la plupart des cas le fait de porter des applications vers le GPU ne peut pas être automatisé à cause de l'architecture unique du GPU. Les problèmes de mappage sur le GPU ont été l'objet de recherches dans de nombreux domaines. Beaucoup de problèmes en science et en ingénierie consistent simplement à résoudre systèmes d'équations linéaires creux. Étant donné que les systèmes creux qui croissent à l'aide de solveurs itératifs classiques ne seront pas réalisables, un des nouveaux solveurs itératifs proposés dans la littérature récente est la méthode de croyance des propagations gaussiennes (GABP). Cette méthode utilise des messages de mise à jour récursifs sur un modèle graphique. Dans ce travail, une variante de l'algorithme GABP fut mise en place sur le GPU. La mise en œuvre a été testée avec succès avec des données FEM (méthode des éléments finis). Les implémentations parallèles ont atteint une amélioration du temps d'exécution jusqu'à 4 × par rapport à l'implémentation de série du CPU.
Cheekiralla, Sivaram M. S. L. 1980. "Development of a wireless sensor unit for tunnel monitoring." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/30043.
Повний текст джерелаIncludes bibliographical references (p. 133-138).
In this thesis we describe the development of a wireless sensor module for tunnel monitoring. The tunnel in question is a part of the London Underground system. Construction of a new tunnel beneath the existing tunnel is anticipated to cause quantifiable vertical displacement. To ensure safe operation of the tunnel during the construction activity, a real-time monitoring system has been created to measure vertical displacements along the critical zone near Highbury & Islington station. A geomechanical analysis, provided by a third party, is used to establish the allowable maximum displacement. A custom wireless sensor module was developed from off-the-shelf components. This module consists of a sensor device, microcontroller, ADC and RF transmitter. The integration of these components is described in detail. Deployment details and some preliminary results are presented.
by Sivaram M.S.L. Cheekiralla.
S.M.
Shrestha, Joseph, and H. David Jeong. "Automated Unit Price Visualization Using ArcPy Site Package in ArcGIS." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/5474.
Повний текст джерелаChiou, Albert (Albert C. ). "Design study of a novel computer instruction execution unit." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45998.
Повний текст джерелаIncludes bibliographical references (p. 32).
The goal of the "Fresh Breeze Project" is to develop a multi-core chip architecture that supports a better programming model for parallel computing. This architecture combines simultaneous multithreading, a global shared address space, no memory update, and a cycle-free heap to provide a platform for robust, general-purpose, parallel computation. These design choices help simplify classically hard problems such as memory coherency, control flow, and synchronization. An HDL implementation of the core execution unit of a single processing core (many cores are on a single chip) forms the basis of further simulation and synthesis. The design must first be broken down into functional logic blocks and translated into hardware modules. The language Bluespec Verilog allows this description to be constructed in terms of higher-level "guarded atomic actions" triggered by a rule based system.
by Albert Chiou.
M.Eng.
Yi, Jon Rong-Wei 1975. "Corpus-based unit selection for natural-sounding speech synthesis." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/16944.
Повний текст джерелаIncludes bibliographical references (p. 179-196).
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Speech synthesis is an automatic encoding process carried out by machine through which symbols conveying linguistic information are converted into an acoustic waveform. In the past decade or so, a recent trend toward a non-parametric, corpus-based approach has focused on using real human speech as source material for producing novel natural-sounding speech. This work proposes a communication-theoretic formulation in which unit selection is a noisy channel through which an input sequence of symbols passes and an output sequence, possibly corrupted due to the coverage limits of the corpus, emerges. The penalty of approximation is quantified by substitution and concatenation costs which grade what unit contexts are interchangeable and where concatenations are not perceivable. These costs are semi-automatically derived from data and are found to agree with acoustic-phonetic knowledge. The implementation is based on a finite-state transducer (FST) representation that has been successfully used in speech and language processing applications including speech recognition. A proposed constraint kernel topology connects all units in the corpus with associated substitution and concatenation costs and enables an efficient Viterbi search that operates with low latency and scales to large corpora. An A* search can be applied in a second, rescoring pass to incorporate finer acoustic modelling. Extensions to this FST-based search include hierarchical and paralinguistic modelling. The search can also be used in an iterative feedback loop to record new utterances to enhance corpus coverage. This speech synthesis framework has been deployed across various domains and languages in many voices, a testament to its flexibility and rapid prototyping capability.
(cont.) Experimental subjects completing tasks in a given air travel planning scenario by interacting in real time with a spoken dialogue system over the telephone have found the system "easiest to understand" out of eight competing systems. In more detailed listening evaluations, subjective opinions garnered from human participants are found to be correlated with objective measures calculable by machine.
by Jon Rong-Wei Yi.
Ph.D.
Allen, Eric H. (Eric Hickcox). "Stochastic unit commitment in a deregulated electric utility industry." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9951.
Повний текст джерелаAlso issued in leaves.
Includes bibliographical references (p. 237-239).
by Eric H. Allen.
Ph.D.
Nackoul, David Douglas. "Text to Text : plot unit searches generated from English." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61175.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 51).
The story of Macbeth centers around revenge. World War I was started by an act of revenge. Even though these two stories are seemingly unrelated, humans use the same concept to draw meaning from them. Plot units, revenge included, are the common set of structures found in human narrative. They are the mistakes, the successes, the revenges and the Pyhrric victories. They are the basic building blocks of stories. In order to build a computational model of human intelligence, it is clear that we must understand how to process plot units. This thesis takes a step in that direction. It presents an English template for describing plot units and a system that is capable of turning these descriptions into plot-unit searches on stories. It currently processes 26 plot units, and finds 10 plot units spread out over Macbeth, Hamlet, the E-R Cyber Conflict, and a collection of legal case briefs.
by David Douglas Nackoul.
M.Eng.
Reddy, Goutam. "Using a gimbal to calibrate an inertial measurement unit." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/37077.
Повний текст джерелаIncludes bibliographical references (p. 79-82).
In this thesis, an inertial measurement unit (IMU) consisting of 3 accelerometers and 3 rate gyros is created using off-the-shelf sensors from STMicro and Analog Devices. A novel technique for calibrating the orientation, position, scaling and offset of each of the sensors on the IMU is developed. A gimbal consisting of three concentric rings, with rotary encoders measuring the rotation between rings is designed. The IMU is fixed to the inner ring of the gimbal and rotated in space. By sweeping appropriate orientations of the IMU at appropriate rates, filtered sensor values can be mapped to "true" angular velocities and linear accelerations computed from the gimbal rotations. The sensor parameters are estimated via. MMSE, and a Kalman filter is implemented to estimate the IMU's attitude (roll and pitch angles) from the raw sensor values. The calibrated sensors are found to track the pitch angle with a mean-square-error of 1.7427 degrees, and the roll angle with a mean-square-error of 3.1387 degrees. The novel outcome of this thesis is that it defines a technique for calibrating IMUs with component sensors that need not be orthogonal in placement.
by Goutam Reddy.
M.Eng.
Park, Joseph Seung Young. "Predicting intensive care unit patient outcomes through patient similarity." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/123036.
Повний текст джерелаThesis: M. Eng. in Computer Science and Molecular Biology, Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 85-86).
An ICU stay involves invasive treatments, and frequently, the decision to continue therapy is made with limited information based on the physician's personal experience. This thesis proposal describes a tool to assist this decision by identifying similar patients and using their outcomes for prediction. We used the eICU Collaborative Research Database (eICU-CRD) v2.0 for the project. Different time varying and time constant features about the patient's demographics and clinical trajectory was used as input data, such as patient age and longitudinal blood pressure measurement. Using this information, a Cox Proportional Hazards model was built to map the multivariate time series of input data to a univariate time series, which was used to match the patient to a cohort of similar patients. Based on the cohort, this model predicted the probability of a healthy discharge by using the aggregate outcome of the cohort for prediction.
by Joseph Seung Young Park
M. Eng. in Computer Science and Molecular Biology
M.Eng.inComputerScienceandMolecularBiology Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
Kupferschmidt, Benjamin. "INTEGRATING ENGINEERING UNIT CONVERSIONS AND SENSOR CALIBRATION INTO INSTRUMENTATION SETUP SOFTWARE." International Foundation for Telemetering, 2007. http://hdl.handle.net/10150/604520.
Повний текст джерелаHistorically, different aspects of the configuration of an airborne instrumentation system were specified in a variety of different software applications. Instrumentation setup software handled the definition of measurements and PCM Formats while separate applications handled pre-flight checkout, calibration and post-flight data analysis. This led to the manual entry of the same data multiple times. Industry standards such as TMATS strive to address this problem by creating a data-interchange format for passing setup information from one application to another. However, a better alternative is to input all of the relevant setup information about the sensor and the measurement when it is initially created in the instrumentation vendor’s software. Furthermore, an additional performance enhancement can be achieved by adding the ability to perform sensor calibration and engineering unit conversions to pre-flight data visualization software that is tightly coupled with the instrumentation setup software. All of the setup information can then be transferred to the ground station for post-flight processing and data reduction. Detailed reports can also be generated for each measurement. This paper describes the flow of data through an integrated airborne instrumentation setup application that allows sensors and measurements to be defined, acquired, calibrated and converted from raw counts to engineering units. The process of performing a sensor calibration, configuring engineering unit conversions, and importing calibration and transducer data sheets will also be discussed.
Gomez, Connie Sun Wei Shokoufandeh Ali. "A unit cell based multi-scale modeling and design approach for tissue engineered scaffolds /." Philadelphia, Pa. : Drexel University, 2007. http://hdl.handle.net/1860/1766.
Повний текст джерелаFraser, Douglas (Douglas H. ). "Triptycene side unit effects on compressive yield strength in polycarbonates." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/35071.
Повний текст джерелаIncludes bibliographical references (leaf 25).
Polycarbonates have long been studied for their excellent mechanical toughness. Adding side units to polycarbonate could increase physical properties of the polymer. The role of triptycene in polycarbonate was studied by adding a low concentration of triptycene-containing polymer chains, and using compression testing. The triptycene polycarbonate was a blend created from two separate products. Differential Scanning Calorimetry was used to determine if the samples had phase separated. Thermal degradation of the samples was checked for using Thermogravimetric Analysis. Results indicated that triptycene-containing polycarbonates had higher compressive yield strengths than non-triptycene polycarbonates. The polymers were stronger due to the interlocking mechanism and the steric hindrance of the triptycene units. The design of strengthening polymers by adding triptycene units could prove useful to improve high performing polymers, or to give low molecular weight polymers more stability.
by Douglas Fraser.
S.B.
Yalamanchili, Pranavi. "A MULTI-LEVEL IMPLEMENTATION OF IMAGE AMPLIFICATION ON THE GENERAL PURPOSE GRAPHICAL PROCESSING UNIT." Scholarly Commons, 2017. https://scholarlycommons.pacific.edu/uop_etds/3659.
Повний текст джерелаSalas, Jorge Martin 1961. "Combinational Logic Unit implementation for the AHPL simulator HPSIM2." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277094.
Повний текст джерелаTen, Po-Kiong. "Organophilic pervaporation : engineering science analysis and design tool." Thesis, University of Bath, 2001. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343769.
Повний текст джерела