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Dissertations / Theses on the topic 'Permanence in the field'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Camargo, Felipe Filizzola. "Field and laboratory performance evaluation of a field-blended rubber asphalt." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3138/tde-01072016-111905/.

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Rubber asphalt has been used in Brazil as early as 2001. Among the fabrication processes of rubber asphalt, the most widely used in Brazil is the terminal blend. However, the use of field-blended rubber asphalt has been around in the United States for decades, especially in the state of Arizona. This process results in a highly viscous material with enhanced engineering properties, but requires specific equipment that is typically installed at the job site, or close to the supplying asphalt plant. Thus, keeping in mind the possible technological advantages of using a field blended rubber aspha

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2

Norton, E. R., and J. C. Silvertooth. "Field Determination of Permanent Wilting Point." College of Agriculture, University of Arizona (Tucson, AZ), 1998. http://hdl.handle.net/10150/210356.

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Water is a vital resource for cotton production in the desert Southwest. One method of managing irrigation water is through the use of a "checkbook" approach to irrigation scheduling. This involves irrigating based upon the percent depletion of plant available water (PA its from the soil profile. In order to effectively utilize this method of irrigation scheduling soil water content values at field capacity (FC) and permanent wilting point (PWP) must be defined. In this study the PWP values were characterized for two different soil types, one at Maricopa, AZ and another at Marana, AZ. The poss

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3

Norton, E. R., and J. C. Silvertooth. "Field Determination of Permanent Wilting Point." College of Agriculture, University of Arizona (Tucson, AZ), 1997. http://hdl.handle.net/10150/210944.

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Water is a vital resource for cotton production in the desert Southwest. One method of managing irrigation water is through the use of a "checkbook" approach to irrigation scheduling. This involves irrigating based upon the percent depletion of plant available water (PAK9 from the soil profile. In order to effectively utilize this method of irrigation scheduling soil water content values at field capacity (FC) and permanent wilting point (PWP) must be defined. In this study the PWP values were characterized for Iwo different soil types, one at Maricopa, AZ and another at Marana, AZ. The possib

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4

Bai, Kun. "Direct field-feedback control for permanent magnet spherical motors." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/50141.

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There are emerging requirements for high accuracy multi-DOF actuators in numerous applications. As one of the novel motors capable of multi-DOF manipulation, permanent magnet spherical motors (PMSMs) that can provide continuous and dexterous motion in one joint have been widely studied for their advantages in structure and energy efficiency. The demands to bring forward the performance of PMSMs for precision applications have motivated this thesis to develop a closed-loop orientation control system with high accuracy and bandwidth. Unlike traditional control methods for PMSMs, which rely on ex

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5

Lampo, Miles. "A VALIDATION STUDY OF THE NORTH CAROLINA RAPID FIELD-BASED RATING SYSTEM FOR DISCRIMINATING FLOW PERMANENCE CLASSES OF HEADWATER STREAMS IN AGRICULTURE BASINS IN SOUTHERN ILLINOIS." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1730.

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Rapid field-based assessment methods for classifying stream permanence in headwater streams are needed to accurately inform regulatory decisions regarding which streams are protected under the Clean Water Act. In North Carolina, a rapid field-based assessment method for identification of intermittent and perennial streams has been developed. The North Carolina Method (NC method) uses 26 attributes divided into three categories geomorphology, hydrology, and biology to assess a particular study reach's flow permanence. In this method, the attribute scores for a given study reach are totaled an

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6

James, Leila Linntoya R. "The Experiences of African American Marriage and Family Therapists: Their Contributions to the Marriage and Family Therapy Field." Antioch University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=antioch1576700555849642.

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7

Mevey, James Robert. "Sensorless field oriented control of brushless permanent magnet synchronous motors." Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/1507.

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8

Shi, Juntao. "Novel stator permanent magnet and DC field excited synchronous machines." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/12351/.

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9

Dölle, Michaela. "From arable field to forest: Long-term studies on permanent plots /." Göttingen, 2008. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000252253.

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10

Al, azze Qasim. "Field-Oriented Control of Permanent Magnet Synchronous Motors Based on DSP Controller." Thesis, Southern Illinois University at Edwardsville, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1557741.

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<p> Permanent Magnet Synchronous Motor is widely used in appliances, robots, hybrid electric vehicle, and many other motor applications. permanent magnet synchronous motor has a small size, high efficiency and high performance. Field–Oriented control is a efficiently used method to control the torque as well the speed of permanent magnet synchronous motor. This paper presents a mathematical model of permanent magnet synchronous motor, which is multipole stator winding with constant excitation feeds from the permanent magnet which is mounted on the rotor. Only surface permanent magnet syn

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11

Zheng, Mei. "Novel stator wound field synchronous machines with permanent magnets on slot openings." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/19976/.

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12

Jayasoma, Sujitha. "An advanced drive system for permanent magnet synchronous motors using field programmable." Thesis, University of East London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.532536.

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This research is concerned with the evolution of an advanced drive system for use with permanent magnet synchronous motors. The proposed drive system incorporates state-of-the art control strategies with a switching matrix current loop which is a special case of the sliding mode control loop, implemented using field programmable gate array (FPGA) devices. This significantly increases the bandwidth of the current control loop, in comparison with systems using PI current controllers and therefore improves the dynamic performance of the drive system. The hard-wired FPGA implementation of a curren

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13

Zhang, Yuan. "Sensorless Vector Control and Field Weakening Operation of Permanent Magnet Synchronous Machines." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1291219704.

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14

Gong, Jiangnan. "Axial field permanent magnet machines with high overload capability for transient actuation applications." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/21412/.

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This thesis describes the design, construction and testing of an axial field permanent magnet machine for an aero-engine variable guide vane actuation system. The electrical machine is used in combination with a leadscrew unit that results in a minimum torque specification of 50Nm up to a maximum speed of 500rpm. The combination of the geometry of the space envelope available and the modest maximum speed lends itself to the consideration of an axial field permanent magnet machines. The relative merits of three topologies of double-sided permanent magnet axial field machines are discussed, viz.

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15

Patel, Anup. "Pulsed field magnetization of composite superconducting bulks for magnetic bearing applications." Thesis, University of Cambridge, 2013. https://www.repository.cam.ac.uk/handle/1810/256579.

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Permanent magnets are essential components for many devices such as motors, which currently account for 45 % of global electricity consumption, generators and also superconducting magnetic bearings used for applications such as flywheel energy storage. But even the most powerful rare-earth magnets are limited to a remanent field of 1.4 T, whereas superconducting materials such as YBCO in their bulk form have the extraordinary ability to trap magnetic fields an order of magnitude higher, whilst being very compact. This gives them the potential to increase efficiency and allow significant volume

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16

Prins, Michiel Hendrik Albertus. "Design of a field-intensified interior permanent magnet synchronous machine for electric vehicle application." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86242.

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Thesis (MScEng)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: The focus of this thesis is on the optimal design and evaluation of FI-PM machines to be used with a MG transmission drive-train for EV application. The machines presented are optimised using a gradient-based optimisation algorithm of the VisualDoc software together with FE software and Python scripts. Each machine is optimised for its own objective function. The focus is to reduce expensive rare earth material. High torque ripple issues of the optimised machines are solved by implementing a relatively new topology wher

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17

Mese, Huseyin. "Field Oriented Control Of Permanent Magnet Synchronous Motors Using Three-level Neutral-point-clamped Inverter." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614407/index.pdf.

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In this thesis, field oriented control of permanent magnet synchronous motors using three-level neutral-point-clamped inverter is studied. Permanent magnet synchronous motors are used in high performance drive applications. In this study, the permanent magnet synchronous motor is fed by three-level neutral-point-clamped inverter. For three-level neutral-point-clamped inverter different space vector modulation algorithms, which are reported in literature, are analyzed and compared via computer simulations. The voltage balance on dc-link capacitors is also analyzed and a software control method

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18

Andersson, Maria, and Mikaela Ring. "The Need for Permanent Mooring Buoys in the Gulf of Thailand : A Minor Field Study." Thesis, KTH, Industriell ekologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-139383.

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The purpose of this paper is to evaluate the need for permanent mooring buoys at the popular off-shore islands of Pattaya, Thailand. By investigating the ecological, social and economic gains and losses of installing such buoys, the project aims to examine whether such buoys would help support a more sustainable development in the area. In order to fulfil the aims and objectives of the project, a literature study, two different questionnaires, interviews, line intercept transects (LIT) and a boat traffic survey were performed. The results prove that every dive store operator, 71% of the dive

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19

Wang, Rong-Jie. "Design aspects and optimisation of an axial field permanent magnet machine with an ironless stator." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53351.

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Thesis (PhDEng)--University of Stellenbosch, 2003.<br>ENGLISH ABSTRACT: The advent of new high energy product permanent magnet materials has opened great opportunities for novel electrical machine topologies with advantageous features such as high efficiency and high power/weight ratio. Amongst others, axial field permanent magnet (AFPM) machines with ironless stators are increasingly being used in power generation applications. Because of the absence of the core losses, a generator with this type of design can operate at a substantially high efficiency. Besides, the high compactness and

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20

Soong, Wen Liang. "Design and modelling of axially-laminated interior permanent magnet motor drives for field-weakening applications." Thesis, University of Glasgow, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320328.

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21

Wei, Dongbing. "Variable structure system for the field-oriented control of a permanent magnet synchronous motor drive." Thesis, University of Liverpool, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240911.

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22

Chin, Yung-Kang. "A permanent magnet synchronous motor for an electric vehicle - design analysis." Licentiate thesis, KTH, Electrical Systems, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1763.

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<p>This thesis presents the study and the design analysis of apermanent magnet synchronous motor (PMSM) for the tractionapplication of an electric vehicle. An existing inductiontraction motor for an electric forklift benchmarks the expectedperformances of the proposed PMSM design. Further, thepossibility of using the identical stator as the one used inthe induction motor is explored for the fast prototyping. Theprototype motor is expected to be field-weakened and to have aconstant power speed range (CPSR) of 2.5 to 3.</p><p>A design approach based on the CPSR contour plot in aninterior permane

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23

Magnussen, Freddy. "On design and analysis of synchronous permanent magnet machines for field-weakening operation in hybrid electric vehicles." Doctoral thesis, KTH, Electrical Systems, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-52.

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<p>A regular vehicle of today is equipped with an internal combustion engine that runs on either gasoline or diesel, which are fossil fuels from oil reserves that are millions of years old. In all types of combustion processes carbon dioxide and several other emissions are produced. There are none known technologies of today that can reduce the emissions of carbon dioxide from combustion, but the amount that is produced is mainly dependent on the fuel that is used. Combustion of fossil fuels increases the contamination of carbon dioxide in the atmosphere and diminishes the oil resources. The r

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24

Wollert, Zachary D. "(im)permanence." Kent State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=kent1429907866.

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25

Remark, Robert James. "Depth of permanence: conviction towards permanence value design philosophy." Thesis, Montana State University, 2011. http://etd.lib.montana.edu/etd/2011/remark/RemarkR0511.pdf.

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This thesis provides an account of the degrading values present in the current (twenty-first century) design of the built environment, and proposes an ideology and objective end goal methodology for the re-evaluation and re-administration of critical values for the future design of architecture. Focused around the core value of permanence --a value which proves to structure other architectural values, this thesis's proposes: permanence value design philosophy. In short permanence value design philosophy refers to a means to grasp and provide conviction towards permanence and the qualities pres

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26

Dever, Timothy P. "Direct Torque Control of Resonant Inverter Driven Permanent Magnet Synchronous Motor." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1586426523199448.

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27

Yildirim, Dogan. "Field Oriented Control Of A Permanent Magnet Synchronous Motor Using Space Vector Modulated Direct Ac-ac Matrix Converter." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614302/index.pdf.

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The study designs and constructs a three-phase to three-phase direct AC&ndash<br>AC matrix converter based surface mounted permanent magnet synchronous motor (PMSM) drive system. First, the matrix converter topologies are analyzed and the state-space equations describing the system have been derived in terms of the input and output variables. After that, matrix converter commutation and modulation methods are investigated. A four-step commutation technique based on output current direction provides safe commutation between the matrix converter switches. Then, the matrix converter is simulated

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28

Ali, M. R. N. "Developments in D.C. disc machines : design, construction and performance of permanent magnet axial field motors for traction applications." Thesis, University of Warwick, 1985. http://wrap.warwick.ac.uk/113595/.

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Axial-field permanent magnet motors have been shown to offer improved efficiency and power density compared with conventional machines. The different aspects of the advantages of permanent magnet disc armature motors have been demonstrated. A technique is described by which the magnetic circuit is then designed for optimum motor efficiency. The development of criteria for the selection of machine parameters leads to a commuter program that produces a realistic design given only the desired rower, speed, and voltage as input data. An analytical model has been established to quantitively predict

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Salour, Farhad. "Moisture Influence on Structural Behaviour of Pavements : Field and Laboratory Investigations." Doctoral thesis, KTH, Väg- och banteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-162076.

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The structural behaviour of pavements in cold regions can considerably be affected by seasonal variation in environmental factors such as temperature and moisture content. Along with the destructive effect of heavy traffic loads, climatic and environmental factors can considerably contribute to pavement deterioration. These factors can influence the structural and functional capacity of the pavement structures which, as a result, can trigger and accelerate pavement deterioration mechanisms. Studies on the influence of variation of the environmental factors on the response and behaviour of pave

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Hjälmeby, Amanda. "Permanence in architecture." Thesis, KTH, Arkitektur, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279045.

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How can we generate sustainable architecture in relation to permanence and aging? How can we bring knowledge about old existing buildings in the design process for new architecture? I think it is important to reflect on choice of material because of a buildings life span. Also to be aware of what frame of references are the start for the designprocess. I have been investigated old existing buildings in Småland with focus on permanence in architecture that I think have aged well. I think it is a gap between the design process and the manufacturing industry in Småland. To maintain and develop th

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31

Kronberg, Anders. "Design and Simulation of Field Oriented Control and Direct Torque Control for a Permanent Magnet Synchronous Motor with Positive Saliency." Thesis, Uppsala universitet, Elektricitetslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-176343.

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The researchers at the Department of Electricity at Uppsala University has recently entered the field of electric motor design, however no real knowledge of motor control of salient pole permanent magnet motors exists in the department. This thesis will present a general description of the control method of motors that exist today, this has been done by reviewing existing literature. The literature review has shown that there are at least three control methods with a significant different in their control approach, Scalar-, Field Oriented- and Direct Torque- Control. The two last methods were

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32

Rahm, Mattias. "Controller-Inverter for Sensorless Permanent Magnet Synchronous Motors : Application in Onboard Electric Powertrain for Uphill Propulsion in Downhill Mountain Biking." Thesis, KTH, Elektrisk energiomvandling, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105483.

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This thesis demonstrates a practical implementation of a sensorless permanent magnet synchronousmotor (PMSM) drive for vehicle propulsion. The main design parameters and overall properties of themotor drive are derived for the case of an on-board electric powertrain as a substitute to the lift shuttle indownhill (DH) mountain biking.The theory behind field oriented control (FOC) for sensorless PMSMs is analyzed in some detail.Controller-inverter hardware and software are designed and prototyped in accordance with the deriveddesign parameters. Initial tuning and testing in a test bench environm

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33

Pretorius, Dewald. "Design study and analysis of a conventional radial-field flux-switching permanent magnet machine for a medium-speed wind turbine." Master's thesis, Faculty of Engineering and the Built Environment, 2021. http://hdl.handle.net/11427/33844.

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A conventional radial-field FSPM machine was designed and studied. The research focussed on the effectiveness of using a parametric study to obtain an optimized solution compared to using a computerized optimizer; as well as an in-depth core loss analysis. The designing process started with an analytical design that was used for initial design purposes, and this was followed by numerical simulations to get an optimized solution. Within the numerical simulations, the parametric analysis and optimization were performed. The final optimized design was designed to be manufactured and compared to b

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34

Baktiono, Surya. "A Study of Field-Oriented Control of a Permanent Magnet Synchronous Generator and Hysteresis Current Control for Wind Turbine Application." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338314559.

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35

N'gotta, Patrick. "Developpement d'un quadripôle à aimant permanent à usage des accélérateurs de particules." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAY038/document.

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Les sources de rayonnement synchrotron sont en constante évolution afin de fournir aux scientifiques, un faisceau de rayons-X plus intense et plus cohérent. Ces évolutions requièrent une augmentation du champ fournit par les structures multipolaires utilisés dans la maille de l'accélérateur pour focaliser le faisceau d'électrons. Ceci conduit à un intérêt grandissant pour la technologie à aimants permanent car elle permettrait d'obtenir des structures multipolaires plus performantes et plus compactes. De plus cette solution est attractive car elle ne consomme pas d'énergie électrique contraire

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Luo, Jun. "The dynamics of permanence." [Bloomington, Ind.] : Indiana University, 2004. http://wwwlib.umi.com/dissertations/fullcit/3162246.

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Thesis (Ph.D.)--Indiana University, Dept. of Computer Science and Cognitive Science, 2004.<br>Title from PDF t.p. (viewed Dec. 1, 2008). Source: Dissertation Abstracts International, Volume: 66-01, Section: B, page: 0369. Chairs: Michael E. Gasser; Linda B. Smith.

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Vasquez, Julia Barbara Ann. "Constructing a Transient Permanence." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78261.

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A residence hall is a temporary home. Yet, it can be the most impactful campus environment on a student's education and life. From lifelong friendships to retention rates, residence halls affect students as many experience their first opportunity to express their individuality and personal responsibility. No study can conclusively determine that one residence hall type is better than another. Rather, it is a hall's overall gestalt that determines student satisfaction and a positive perception of community. The question of my thesis explores how residence hall architecture can anticipate its

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Gibbs, Nicole M. "Questioning Permanence: Six Essays." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1248718452.

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Gorfman, Semen [Verfasser]. "Synchrotron X-ray Diffraction Study of Site Selective Response in alpha-GaPO4 Crystals to a Permanent External Electric Field / Semen Gorfman." Aachen : Shaker, 2006. http://d-nb.info/1166513491/34.

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Urach, Felipe Lavarda. "ESTIMATIVA DA RETENÇÃO DE ÁGUA EM SOLOS PARA FINS DE IRRIGAÇÃO." Universidade Federal de Santa Maria, 2007. http://repositorio.ufsm.br/handle/1/7593.

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The purpose of the present work was to establish and to test pedotransfer functions for water retention the Rio Grande do Sul s soils. Water retention data were obtained from Solano Peraza s dissertation, Irriga System database and in the literature. The first part of this work was the collect soil water retention data and pedotransfer functions for Rio Grande do Sul soils, forming the literature data base, in a total of 24 papers and 624 database of the water retention. The samples obtained from of Solano Peraza were collected soil profiles, in a total of 86 data of water retention, and the I

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Harrak, Mohamed. "Le renseignement : permanence et changement." Toulouse 1, 2002. http://www.theses.fr/2002TOU10004.

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À l' aube du XXIème siècle, le renseignement soulève plus que jamais des questions sur ses méthodes, son utilité et même sur sa raison d' être. Activité hors du commun touchant à divers domaines, le renseignement constitue en effet un sujet passionnant. Plusieurs thèmes seront traités dans cette étude. Mais du fait de leur importance, trois d' entre eux seront plus particulièrement développés. Outre l'organisation des services de renseignement et la désinformation, il sera aussi question du nouveau rôle que les services secrets jouent dans la lutte contre la prolifération des menaces criminell

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Huguet, Jean-Marc. "Permanence culturelle et inscription territoriale." Paris 8, 1998. http://www.theses.fr/1998PA081434.

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Penser un territoire est la faculte de l'imaginer dans toutes ses representations immediates (intuition en dehors de toutes perceptions de realites objectives). Il ne peut etre objet d'experiences (autres qu'imaginaires) dans l'impossibilite d'en avoir une connaissance synthetique autre qu'intuitive. Il n'a pas d'existence objective, il ne peut etre considere que comme la condition de possibilite de phenomenes politiques et religieux. Il est difficile de penser le territoire, en dehors d'une forme symbolisee, comme objet. La representation que nous pouvons en avoir n'est pas fondee des connais

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Han, Qinghua. "ANALYSIS AND MODELING OF THE EDS MAGLEV SYSTEM BASED ON THE HALBACH PERMANENT MAGNET ARRAY." Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4381.

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Electro-dynamic suspension (EDS) Magnetic levitation (Maglev) with its advantage in maintenance, safety, efficiency, speed, and noise is regarded as a leading candidate for the next generation transportation / space launch assist system. The Halbach array due to its unique magnetic field feature has been widely used in various applications. The EDS system using Halbach arrays leads to the potential EDS system without super-conductor (SC) technology. In this thesis, the Halbach array magnetic field and the dynamics of a novel Halbach array EDS Maglev system were considered. The practical Halbac

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Azambuja, Henrique Voltolini de. "Avaliação da aplicação de um campo magnético permanente sepultado em área de enxerto ósseo alógeno e dento-alveolar : estudo experimental em ratos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/12420.

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Proposição: O presente trabalho propõe o estudo histológico descritivo da aplicação de um campo magnético sepultado, estático e permanente em área de enxerto ósseo alógeno liofilizado e dento-alveolar associada a defeito cirúrgico em mandíbulas de ratos. Metodologia: estudo experimental in vivo, randomizado. Amostra foi composta por 21 ratos, da espécie Rattus novergicus albinus, linhagem Wistar, machos, divididos em três grupos, correspondendo aos tempos experimentais de sete, 21 e 45 dias. Foram realizadas ostectomias associadas a odontossecções, na face lateral externa do corpo mandibular e

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Miao, Dongmin. "Voltage Stabilization Control of Wide-Speed-Range Permanent-Magnet Synchronous Generator Systems." Doctoral thesis, Universite Libre de Bruxelles, 2016. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/246410.

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DC power systems have a constant DC-link voltage, as well as the advantages such as high stability, high efficiency, small size and light weight; therefore, they are widely used in stand-alone power systems, e.g. the power systems in aircrafts and automobiles, isolated wind power generation systems, etc. Permanent-Magnet Synchronous Generators (PMSGs) possess the advantages including high power density, high efficiency, and high control precision, and have obtained great attention and have been widely used in military, inductry, and daily life. Pulse Width Modulation (PWM) rectifier has been o

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Lim, Jung Youl. "A distributed multi-level current modeling method for design analysis and optimization of permanent magnet electromechanical actuators." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53990.

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This thesis has been motivated by the growing needs for multi-degree of freedom (M-DOF) electromagnetic actuators capable of smooth and accurate multi-dimensional driving motions. Because high coercive rare-earth permanent-magnets (PMs) are widely available at low cost, their uses for developing compact, energy-efficient M-DOF actuators have been widely researched. To facilitate design analysis and optimization, this thesis research seeks to develop a general method based on distributed source models to characterize M-DOF PM-based actuators and optimize their designs to achieve high torque-to

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Oliveira, Nuno Villamariz. "Castelos da Ordem do Templo em Portugal 1120-1314." Master's thesis, Instituições portuguesas -- UNL-Universidade Nova de Lisboa -- FCSH-Faculdade de Ciências Sociais e Humanas, 2000. http://dited.bn.pt:80/29496.

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Bortolini, Diego. "Estimativa da retenção e disponibilidade de água em solos de Santa Catarina." Universidade do Estado de Santa Catarina, 2016. http://tede.udesc.br/handle/handle/2626.

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Submitted by Claudia Rocha (claudia.rocha@udesc.br) on 2018-03-23T14:52:47Z No. of bitstreams: 1 PGCS16DA034.pdf: 2595021 bytes, checksum: a3427fca0377ac57de4e08f845323733 (MD5)<br>Made available in DSpace on 2018-03-23T14:52:47Z (GMT). No. of bitstreams: 1 PGCS16DA034.pdf: 2595021 bytes, checksum: a3427fca0377ac57de4e08f845323733 (MD5) Previous issue date: 2016-02-26<br>Capes<br>It is necessary to acknowledge the retention and availability of water in the soil, they are agricultural production factors, which can be measured directly or estimated by pedotranfers. Some studies about retention

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Cichy, Natalie A. R. Soranno. "Making the Child's World: Fostering Permanence." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2874.

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Making the Child's World: Fostering Permanence, is a redefining, reordering and recalibration of the planning of a centre for children in transition within the child welfare system that would operate alongside foster homes. It is not a prescription for the ideal building design. Instead it is a proposition for a set of standards and qualities necessary of a child-centered environment; one where the child can be comfortable and secure, in the face of his or her family circumstances. <br /><br /> This thesis discusses the period between infancy and school age as crucial in the physic

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Baker, Christopher I. "Temporal context, object permanence, and space." Thesis, University of St Andrews, 1999. http://hdl.handle.net/10023/14592.

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In everyday life objects are continually moving into and out of view, yet we experience a stable environment in which objects are "permanent" and have an existence independent of observation. Many non-human species also exhibit such "object permanence", although the nature of their representations of occluded objects remains unclear. This thesis investigated knowledge and representation of occluded objects in Rhesus macaques (Macaca mulatto). At the behavioural level, an analysis of the reaching behaviour of a macaque demonstrated representation for the motivational value of rewards hidden fro

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