Log in

Relevant bibliographies by topics / Field transfer / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Field transfer.

Dissertations / Theses on the topic 'Field transfer'

Author: Grafiati

Published: 4 May 2024

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Field transfer.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Hart, David Marvin. "Light-Field Style Transfer." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7763.

Full text

Abstract:

For many years, light fields have been a unique way of capturing a scene. By using a particular set of optics, a light field camera is able to, in a single moment, take images of the same scene from multiple perspectives. These perspectives can be used to calculate the scene geometry and allow for effects not possible with standard photographs, such as refocus and the creation of novel views.Neural style transfer is the process of training a neural network to render photographs in the style of a particular painting or piece of art. This is a simple process for a single photograph, but naively

APA, Harvard, Vancouver, ISO, and other styles

2

Basu, Soumyadipta. "Near-field radiative energy transfer at nanometer distances." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31777.

Full text

Abstract:

Thesis (Ph.D)--Mechanical Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Zhang, Zhuomin; Committee Member: Citrin, David; Committee Member: Hesketh, Peter; Committee Member: Joshi, Yogendra; Committee Member: Peterson, Andrew. Part of the SMARTech Electronic Thesis and Dissertation Collection.

APA, Harvard, Vancouver, ISO, and other styles

3

Rein, Gordon J. "Transfer of training in organizations, a field study." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq24229.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Dai, Jin. "Near-Field Radiative Heat Transfer between Plasmonic Nanostructures." Doctoral thesis, KTH, Optik och Fotonik, OFO, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-195653.

Full text

Abstract:

Radiative heat transfer (RHT) due to coupled electromagnetic near field scan significantly exceed that dictated by Planck’s law. Understanding such phenomenon is not only of fundamental scientific interest, but also relevant to a broad range of applications especially connected to nanotechnologies.This dissertation elaborates, through a scattering approach based on the rigorous coupled wave analysis method, how plasmonic nanostructures can tame the near-field RHT between two bodies. The transmission-factor spectra are corroborated by photonic band diagrams computed using a finite element metho

APA, Harvard, Vancouver, ISO, and other styles

5

Shah, Simon Michael. "Magnetisation transfer effects at ultra high field MRI." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/39398/.

Full text

Abstract:

Increased signal to noise ratio in ultra high field Magnetic Resonance Imaging (MRI) has allowed the development of quantitative imaging techniques and new contrast mechanisms, such as Chemical Exchange Saturation Transfer (CEST) to be probed. The development of CEST contrast imaging has involved overcoming a number of technical challenges associated with ultra high field MRI. The B1 transmit field was, and still is, a major challenge. Presented in this thesis, the B1 transmit field in regions of low B1 are improved with the use of dielectric pads and a simulation study shows that the overall

APA, Harvard, Vancouver, ISO, and other styles

6

Prussing, Keith F. "An investigation of surface shape effects on near-field radiative transfer." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54321.

Full text

Abstract:

It has been shown that the energy exchange between two objects can be greatly enhanced when the separation between the objects is on the order of the wavelength of thermal emission. The earliest theoretical and computational work focused on simple planar and spherical geometries, or they resorted to approximations that separated the object to outside of the thermal wavelength \(\lambda_T = hc/(k_BT)\). Since those original works, the study of near-field energy exchange has expanded to object shapes that can be described by a separable coordinate system using a spectral expansion of the dyad

APA, Harvard, Vancouver, ISO, and other styles

7

Huang, Yi Ph D. Massachusetts Institute of Technology. "Electrically-tunable near-field heat transfer with ferroelectric materials." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/92139.

Full text

Abstract:

Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 75-80).<br>Radiative heat transfer at small separations can be enhanced by orders of magnitude via the use of surface phonon polariton or plasmon polariton waves. This enhancement has potential applications in different devices, such as thermal emitters, thermal rectifiers, thermophotovoltaic and thermoelectric energy conversion systems. In this thesis, the author explores the tunable optical properties of ferroe

APA, Harvard, Vancouver, ISO, and other styles

8

Meyer, Antoine. "Active control of heat transfer by an electric field." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMLH13/document.

Full text

Abstract:

La stabilité d’un fluide Newtonien diélectrique confiné dans un anneau cylindrique et soumis à un gradient radial de température et à un champ électrique est étudiée. Le gradient de température induit une stratification de la permittivité électrique du fluide et de sa masse volumique. Trois poussées thermiques rentrent alors en jeu : la gravité terrestre créée la poussée d’Archimède, la rotation des cylindres engendre la poussée centrifuge, et le champ électrique induit la poussée diélectrophorétique. L’effet de ces poussées est étudié dans différentes combinaisons, principalement à travers l’

APA, Harvard, Vancouver, ISO, and other styles

9

Carpenter, Joanna Katharine Hicks. "Magnetic field effects on electron transfer reactions in photosynthetic bacteria." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390466.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Tong, Jonathan Kien-Kwok. "Photonic engineering of near- and far-field radiative heat transfer." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104127.

Full text

Abstract:

Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 181-195).<br>Radiative heat transfer is the process by which two objects exchange thermal energy through the emission and absorption of electromagnetic waves. It is one of nature's key fundamental processes and is ubiquitous in all facets of dail

APA, Harvard, Vancouver, ISO, and other styles

11

Lu, Ming. "Synergetic Attenuation of Stray Magnetic Field in Inductive Power Transfer." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/78621.

Full text

Abstract:

Significant stray magnetic field exists around the coils when charging the electric vehicles (EVs) with inductive power transfer (IPT), owning to the large air gap between the transmitter and receiver. The methods for field attenuation usually introduce extra losses and reduce the efficiency. This study focuses on the synergetic attenuation of stray magnetic field which is optimized simultaneously with the efficiency. The optimization is realized with Pareto front. In this dissertation, three methods are discussed for the field attenuation. The first method is to tune the physical parameters

APA, Harvard, Vancouver, ISO, and other styles

12

Subramanian, Rajkumar. "Heat Transfer to a Droplet Translating in an Electric Field." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1108851150.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Cattò, Silvia <1990&gt. "Thermochronometric evidence of far-field stress transfer in continental collisions." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amsdottorato.unibo.it/8653/1/SC_Tesi_SilviaCatto%CC%80.pdf.

Full text

Abstract:

In this dissertation, two low-temperature thermochronometers [fission-track analysis on apatite and (U-Th)/He analyses on zircons] are applied on various tectonostratigraphic units from three collisional settings: (i) the Bitlis-Pütürge Massif (SE Turkey), (ii) the Lesser Caucasus (Georgia, Armenia, Azerbaijan), and (iii) the Strandja Massif (SE Bulgaria and NW Turkey). The aim of the study is to better understand the syn- and post-collisional thermochronological evolution of collisional orogens, thus elucidating the dynamics of stress partitioning and transmission during continental collision

APA, Harvard, Vancouver, ISO, and other styles

14

Muñiz, García Claudia. "Rapid Energy Transfer to an Energy Buffer." Thesis, KTH, Kommunikationssystem, CoS, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91941.

Full text

Abstract:

This master thesis introduces a new technology applicable to nearly all mobile and portable electrical devices since all of them need energy to operate. This thesis attempts to cut the last wire - this one the wire to the primary power source. In other words, fast and efficient wireless energy transference through a strong, focused near magnetic field whose fast attenuation will avoid interference with surrounding communication systems or human harm. This energy is transferred to and will be stored inside the mobile device where nothing but a small and simple secondary circuit has been placed.

APA, Harvard, Vancouver, ISO, and other styles

15

Harder, Donald R. "Convective heat transfer from a cylinder in a strong acoustic field." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA305867.

Full text

Abstract:

Thesis (M.S. in Mechanical Engineering and M.S. in Astronautical Engineering) Naval Postgraduate School, December 1995.<br>Thesis advisor(s): Ashok Gopinath, Oscar Biblarz. "December 1995." Bibliography: p. 103-104. Also available online.

APA, Harvard, Vancouver, ISO, and other styles

16

Yaghi, Abdulfattah. "Training transfer in human resources management a field study on supervisors /." Diss., Mississippi State : Mississippi State University, 2006. http://library.msstate.edu/etd/show.asp?etd=etd-11292005-235221.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Singer, Farah. "Influence of the nonlocal effects on the near-field radiative heat transfer." Thesis, Poitiers, 2014. http://www.theses.fr/2014POIT2338.

Full text

Abstract:

Dans ce mémoire de thèse, nous étudions la validité de quelques modèles non locaux de la permittivité diélectrique (PD) dans le calcul du coefficient de transfert de chaleur par rayonnement (CTCR) entre deux matériaux diélectriques, semi- infinies, plans et parallèles, et séparés par un espace vide de largeur d.Dans les études théoriques antérieures, il a été montré que lorsque l'on considère un modèle local de la PD, le transfert de chaleur par rayonnement en champ proche (TCRCP) suit une loi 1/d² quand d devient de l'ordre ou inférieure à quelques centaines de nanomètres. Cette divergence no

APA, Harvard, Vancouver, ISO, and other styles

18

Mayo, Yague Ignacio. "Flow field and heat transfer in a rotating rib-roughened cooling passage." Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/19529/1/MayoYague_Ignacio.pdf.

Full text

Abstract:

A great effort has been carried out over the recent years in the understanding of the flow field and heat transfer in the internal cooling channels present in turbine blades. Indeed, advanced cooling schemes have not only lead to the increase of the gas turbine efficiency by increasing the Turbine Inlet Temperature above the material melting temperature, but also the increase of the turbine lifespan. To allow such progresses, modern experimental and numerical techniques have been widely applied in order to interpret and optimize the aerodynamics and heat transfer in internal cooling channels.

APA, Harvard, Vancouver, ISO, and other styles

19

Artvin, Zafer. "Fabrication Of Nanostructured Samples For The Investigation Of Near Field Radiation Transfer." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614826/index.pdf.

Full text

Abstract:

Radiative heat transfer in nanostructures with sub-wavelength dimensions can exceed that predicted by Planck&#039<br>s blackbody distribution. This increased effect is due to the tunneling of infrared radiation between nanogaps, and can allow the eventual development of nano-thermo-photo-voltaic (Nano-TPV) cells for energy generation from low temperature heat sources. Although near field radiation effects have been discussed for many years, experimental verification of these effects is very limited so far. In this study, silica coated silicon wafer sample chips have been manufactured by using

APA, Harvard, Vancouver, ISO, and other styles

20

Provan, Gabrielle. "Coherent scatter radar observations of field line resonances and flux transfer events." Thesis, University of Leicester, 1998. http://hdl.handle.net/2381/30613.

Full text

Abstract:

The Earth's magnetosphere is constantly being perturbed by its interaction with the solar wind and the interplanetary magnetic field (IMF). This thesis involves a study of the ionospheric signatures of two separate processes which arise in the magnetosphere through these interactions, namely field line resonances and flux transfer events. Field line resonances - standing magnetohydrodynamic waves - have previously been observed as a periodic modulation of the plasma drift velocity by the Goose Bay HF and SABRE VHF coherent scatter radars. They produce latitudinally-structured spectral peaks at

APA, Harvard, Vancouver, ISO, and other styles

21

Kaharabata, Samuel K. "Moisture transfer behind windbreaks : laboratory simulations and conditional sampling in the field." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60535.

Full text

Abstract:

The spatial distribution of local evaporation from ground-based sources behind solid and porous windbreaks was studied in laboratory models for steady state and intermittent flows. Field observations of wind and turbulence characteristics (turbulence intensity, power spectra and integral length scale L) over surfaces whose zero displacement (d) and roughness length (z$ sb0$) had also been determined, were used to scale the laboratory simulations. Scaling parameters were z/z$ sb0$, $ sigma$/U, L/z$ sb0$ and Uz$ sb{0}$/K, where z, U, $ sigma$ and K are height, wind speed, standard deviation of v

APA, Harvard, Vancouver, ISO, and other styles

22

Choi, Chang-Hoon. "Fast field-cycling magnetism transfer contrast magnetic resonance imaging (FFC MTC MRI)." Thesis, University of Aberdeen, 2010. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=158558.

Full text

Abstract:

Magnetisation Transfer Contrast (MTC) is a well-established magnetic resonance imaging (MRI) contrast-generating mechanism, and is widely used for clarifying MR-invisible macromolecular information indirectly via MR-detectable free protons using an offresonance pre-saturation radiofrequency (RF) pulse (or MT pulse). As a result of MT pulse irradiation, magnetisation between both proton pools is exchanged and the signal intensity of mobile protons is decreased in relation to the amount of macromolecules. MTC MRI is normally implemented at a fixed magnetic field; however, it may be useful to eva

APA, Harvard, Vancouver, ISO, and other styles

23

Francoeur, Mathieu. "NEAR-FIELD RADIATIVE TRANSFER: THERMAL RADIATION, THERMOPHOTOVOLTAIC POWER GENERATION AND OPTICAL CHARACTERIZATION." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_diss/58.

Full text

Abstract:

This dissertation focuses on near-field radiative transfer, which can be defined as the discipline concerned with energy transfer via electromagnetic waves at sub-wavelength distances. Three specific subjects related to this discipline are investigated, namely nearfield thermal radiation, nanoscale-gap thermophotovoltaic (nano-TPV) power generation and optical characterization. An algorithm for the solution of near-field thermal radiation problems in one-dimensional layered media is developed, and several tests are performed showing the accuracy, consistency and versatility of the procedure. T

APA, Harvard, Vancouver, ISO, and other styles

24

Cercignani, M. "Quantitative MRI of the human brain : magnetisation transfer and magnetic field mapping." Thesis, University College London (University of London), 2006. http://discovery.ucl.ac.uk/1445353/.

Full text

Abstract:

The ultimate goal of this thesis was to identify ways of combining the parametric maps produced by the use of multiple quantitative Magnetic Resonance Imaging (MRI) techniques. As a first stage towards this goal, this thesis focuses on magnetisation transfer (MT) imaging, and on the use of field mapping techniques to improve the reliability of other quantitative techniques such as functional MRI (fMRI) and diffusion tensor (DT) MRI. After summarising the basic principles of MRI, the MT phenomenon is described and a quantitative MT model is reviewed. A set of experiments is then described aimin

APA, Harvard, Vancouver, ISO, and other styles

25

Siegrist, Florian [Verfasser], and Ferenc [Akademischer Betreuer] Krausz. "Light-field driven charge and spin transfer / Florian Siegrist ; Betreuer: Ferenc Krausz." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2020. http://d-nb.info/1206096403/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

蔡慶銘 and Hing-ming Michael Chua. "Transition intensities and energy transfer of lanthanide ions in crystals." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B31211409.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Chua, Hing-ming Michael. "Transition intensities and energy transfer of lanthanide ions in crystals /." [Hong Kong : University of Hong Kong], 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13692689.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Ahmad, Syed Waqas. "Combined effect of electric field and surface modification on pool boiling of R-123." Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/6600.

Full text

Abstract:

The effect of surface modification and high intensity electric field (uniform and non – uniform) acting separately or in combination on pool boiling of R-123 is presented in this thesis. The effect of surface modification was investigated on saturated pool boiling of R-123 for five horizontal copper surfaces modified by different treatments, namely: an emery polished surface, a fine sandblasted surface, a rough sandblasted surface, an electron beam (EB) enhanced surface and a sintered surface. Each 40 mm diameter heating surface formed the upper face of an oxygen-free copper block, electricall

APA, Harvard, Vancouver, ISO, and other styles

29

Thorkildsen, Kenneth J. "Numerical field model simulation of fire and heat transfer in a rectangular compartment." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23995.

Full text

Abstract:

Approved for public release; distribution is unlimited<br>Shipboard fires have been the bane of mariners since man's earliest attempts to sail the sea. Understanding the behavior of fire in an enclosed space such as those found on today's modern seagoing vessels will greatly enhance the mariner's ability to combat or prevent them. In a joint effort between the Naval Postgraduate School and the University of Notre Dame a computer code has been developed to model a full scale fire in a closed compartment. The code uses finite volume formulation to obtain numerical solutions to the unsteady, t

APA, Harvard, Vancouver, ISO, and other styles

30

Fan, Philex Ming-Yan. "Power management and power conditioning integrated circuits for near-field wireless power transfer." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/290143.

Full text

Abstract:

Near-field wireless power transfer (WPT) technology facilitates the energy autonomy of heterogeneous systems, significantly augmenting complementary metal-oxide-semiconductor field-effect-transistor (CMOS) technology. In low-power wearable devices, existing power conditioning integrated circuits do not maximize the power factor (PF) for rectification and power conversion efficiency (PCE) due to multiple conversion. Additionally, there is no core power management for the entire power flow. The majority of the research focuses on active rectifiers, which reduce the turn-on voltage for rectificat

APA, Harvard, Vancouver, ISO, and other styles

31

Williams, Devin Wells. "Optimization of Near Field Coupling for Efficient Power Transfer Utilizing Multiple Coupling Structures." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/32933.

Full text

Abstract:

A rise in the need for dynamic energy allocation has been associated with the saturation of available portable wireless electronic devices. Currently, the methods for transmitting this energy efficiently have been limited to a number of options, including near field resonant magnetic coupling. Previous research with mid-range (dâ 4r) wireless power transfer has resulted in coupling efficiencies of close to 40%. In order to increase efficiency in transfer a more directive transmission system was developed using a phased array. Coupling networks were used to shift the resonance of the coupl

APA, Harvard, Vancouver, ISO, and other styles

32

Abdelaal, Mohamed Riad Mohamed. "Electric Field Driven Enhancement of Heat and Mass Transfer to a Liquid Drop." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1321968954.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Colban, William Frederick IV. "Effects of Realistic Combustor Exit Profiles on a Turbine Vane Endwall." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/31013.

Full text

Abstract:

Engine designers continually push the combustor exit temperature higher to produce more power from gas turbine engines. These high turbine inlet temperatures, coupled with high turbulence levels and flow field non-uniformities, make turbine vane and endwall cooling a very critical issue in engine design. To appropriately cool these surfaces, knowledge of the passage flow field and endwall temperature distribution at representative engine conditions is necessary. <p> A combustor test section was used to simulate realistic turbine inlet profiles of turbulence, normalized temperature, normali

APA, Harvard, Vancouver, ISO, and other styles

34

Li, Yichen. "Phase-field Modeling of Phase Change Phenomena." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/99148.

Full text

Abstract:

The phase-field method has become a popular numerical tool for moving boundary problems in recent years. In this method, the interface is intrinsically diffuse and stores a mixing energy that is equivalent to surface tension. The major advantage of this method is its energy formulation which makes it easy to incorporate different physics. Meanwhile, the energy decay property can be used to guide the design of energy stable numerical schemes. In this dissertation, we investigate the application of the Allen-Cahn model, a member of the phase-field family, in the simulation of phase change prob

APA, Harvard, Vancouver, ISO, and other styles

35

Yang, Shuai. "Alternative power transfer for passive RFID systems in challenging applications." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/270885.

Full text

Abstract:

This dissertation presents a case study which attempts to implement a passive Ultra High Frequency Radio Frequency Identification (UHF RFID) system on aircraft landing gear (LG) to permit component configuration management. It is shown that a monostatic RFID system with two reader antennas, one on the LG main fitting and one in the wing bay allows up to 64 kbits of data to be associated with each LG component. A 7 dB system margin allows data on each LG component to be updated wirelessly and will also enable a passive UHF RFID-based LG health and usage monitoring system when tags with required

APA, Harvard, Vancouver, ISO, and other styles

36

Cooke, Jason Randolph. "Light front field theory calculation of deuteron properties /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/9662.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Bridenstine, Mark. "Convective heat transfer from a vertical cylinder in a high amplitude resonant sound field." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA320233.

Full text

Abstract:

Thesis (M.S. in Mechanical Engineering) Naval Postgraduate School, September 1996.<br>Thesis advisor(s): Ashok Gopinath. "September 1996." Includes bibliographical references (p. 95-96). Also available online.

APA, Harvard, Vancouver, ISO, and other styles

38

Wojtas, David Heinrich. "Suppressing Discretization Error in Langevin Simulations of (2+1)-dimensional Field Theories." Thesis, University of Canterbury. Physics and Astronomy, 2006. http://hdl.handle.net/10092/1294.

Full text

Abstract:

Lattice simulations are a popular tool for studying the non-perturbative physics of nonlinear field theories. To perform accurate lattice simulations, a careful account of the discretization error is necessary. Spatial discretization error as a result of lattice spacing dependence in Langevin simulations of anisotropic (2 + 1)-dimensional classical scalar field theories is studied. A transfer integral operator (TIO) method and a one-loop renormalization (1LR) procedure are used to formulate effective potentials. The effective potentials contain counterterms which are intended to suppres

APA, Harvard, Vancouver, ISO, and other styles

39

Luo, Yuxia. "The study of energy transfer and local field effect in lanthanide complexes with high and low symmetry." HKBU Institutional Repository, 2019. https://repository.hkbu.edu.hk/etd_oa/696.

Full text

Abstract:

There are lots of important applications for lanthanides (Ln) because of their unique properties. The properties are closely linked to the environment of the crystal field. Thus, two kind of crystals Cs2NaLn(NO2)6 with high Th point-group symmetry and LnPO4 with monoclinic symmetry were chosen to study quantum cutting and Stokes shift. Quantum cutting is a kind of down-conversion energy transfer in which one excitation ultraviolet photon is transformed into multiple near infrared photons. This phenomenon has been studied in Cs2NaY0.96Yb0.04(NO2)6. The emission from Yb3+ can be excited via the

APA, Harvard, Vancouver, ISO, and other styles

40

Augello, Elisa. "Precise Near-Field Focusing exploiting Bessel Beam Launchers for Wireless Power Transfer at millimeter waves." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amslaurea.unibo.it/25774/.

Full text

Abstract:

Wireless Power Transfer has become a promising technology to overcome the limits of wired solutions. Within this framework, the objective of this thesis is to study a WPT link at millimeter waves involving a particular type of antenna working in the radiative near-field, known as Bessel Beam (BB) Launcher. This antenna has been chosen for its peculiarity of generating a Bessel Beam which is by nature non-diffractive, showing good focusing and self-healing capabilities. In particular, a Bull-Eye Leaky Wave Antenna is designed and analysed, fed by a loop antenna and resonating at approximately 3

APA, Harvard, Vancouver, ISO, and other styles

41

Feng, Junjie. "6.78MHz Omnidirectional Wireless Power Transfer System for Portable Devices Application." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/101839.

Full text

Abstract:

Wireless power transfer (WPT) with loosely coupled coils is a promising solution to deliver power to a battery in a variety of applications. Due to its convenience, wireless power transfer technology has become popular in consumer electronics. Thus far, the majority of the coupled coils in these systems are planar structure, and the magnetic field induced by the transmitter coil is in one direction, meaning that the energy power transfer capability degrades greatly when there is some angle misalignment between the coupled coils. To improve the charging flexibility, a three–dimensional (3D) coi

APA, Harvard, Vancouver, ISO, and other styles

42

Yanik, Erim. "Magnetic Field and Heat Transfer Analysis of Magnetic Refrigeration Systems with Different Magnet Array Geometries." Thesis, Southern Illinois University at Edwardsville, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10808213.

Full text

Abstract:

<p> Magnetic refrigeration is one of the alternative cooling technologies that is environmental friendly and has high theoretical coefficient of performance values. This thesis study focuses on magnetic field and heat transfer enhancement of a reciprocating-type magnetic refrigeration system. A set of NdFeB 52 MGOe permanent magnets were employed to form a Halbach magnet array. Gadolinium (Gd) was used as the magnetocaloric material. It was placed concentrically within the Halbach array aperture with the working fluid running through the gap in between the magnet assembly and Gd yielding annul

APA, Harvard, Vancouver, ISO, and other styles

43

Pratik, Ujjwal. "Design of Capacitive Wireless Power Transfer Systems with Enhanced Power Density and Stray Field Shielding." DigitalCommons@USU, 2019. https://digitalcommons.usu.edu/etd/7598.

Full text

Abstract:

Wireless power transfer is becoming relevant today because of its effectiveness and convenience. It has been employed into consumer electronics such as cellular charging and electric vehicle charging. In general, inductive wireless power transfer (IPT) is mostly used for WPT. IPT requires coils and power transfer enhancing material such as ferrite to transfer power. However, Capacitive wireless Power Transfer (CPT) appears as an alternative because it requires cost effective and light metal plate couplers. Among CPT couplers, Vertical (stacked) Four-Plate Coupler (V4PC) structure offers the ad

APA, Harvard, Vancouver, ISO, and other styles

44

Cole, Matthew Thomas. "Dry-transfer of chemical vapour deposited nanocarbon thin films." Thesis, University of Cambridge, 2012. https://www.repository.cam.ac.uk/handle/1810/241515.

Full text

Abstract:

This thesis presents the development of chemical vapour deposited (CVD) graphene and multi-walled carbon nanotubes (MWCNTs) as enabling technologies for flexible transparent conductors offering enhanced functionality. The technologies developed could be employed as thin film field emission sources, optical sensors and substrate-free wideband optical polarisers. Detailed studies were performed on CVD Fe and Ni catalysed carbon nanotubes and nanofibres on indium tin oxide, aluminium and alumina diffusion barriers. Activations energies of 0.5 and 1.5 eV were extracted supporting surface diffusion

APA, Harvard, Vancouver, ISO, and other styles

45

McConnell, Brian Gregory. "A Coupled Heat Transfer and Electromagnetic Model for Simulating Microwave Heating of Thin Dielectric Materials in a Resonant Cavity." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/36179.

Full text

Abstract:

Microwave heating is an emerging but still underutilized tool in modern industrial applications. The task of designing microwave applicators for heating industrial materials with temperature-dependent properties is challenging, and trial-and-error system prototyping is an expensive and wasteful means to accomplish this goal. The purpose of this work is to combine existing heat transfer and electromagnetic models to provide a complete simulation for heating dielectric materials in a resonant microwave cavity. The numerical simulation is validated by comparison to several independent sets of

APA, Harvard, Vancouver, ISO, and other styles

46

Gorchon, Jon. "Current and field induced magnetization reversal in Pt/Co/Pt and (Ga, Mn)(As, P) ferromagnetic films." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112143.

Full text

Abstract:

La manipulation de l’état magnétique d’un système ferromagnétique présente un grand intérêt en raison de possibles applications technologiques. Comprendre les mécanismes fondamentaux qui contrôlent l’aimantation est donc particulièrement important. La compréhension de certains mécanismes peut également avoir un impact dans d’autres domaines de la physique. C’est le cas par exemple de la dynamique de déplacement de parois de domaines sous champ magnétique dans le régime de reptation (creep) qui peut être assimilé à celui d’une interface élastique et qui présente un caractère universel. Cette th

APA, Harvard, Vancouver, ISO, and other styles

47

Ianiro, Andrea. "Flow field and heat transfer in swirling impinging jets." Tesi di dottorato, 2011. http://www.fedoa.unina.it/8822/1/Ianiro_2011.pdf.

Full text

Abstract:

The high heat transfer rate obtainable with impinging jets is widely recognized and explained in scientific literature and the use of jets is very popular in many industrial applications like paper drying, glass tempering and turbine blades cooling. A huge quantity of data is available for single, rows and arrays of jets with also correlations for heat and mass transfer. A major disadvantage of impinging isothermal and flame jets, however, is that the local heat flux can be highly non-uniform (Viskanta, 1993). For some applications, like electronic cooling or chemical vapour deposition, high v

APA, Harvard, Vancouver, ISO, and other styles

48

Greco, Carlo Salvatore. "Investigation of Synthetic Jets Heat Transfer and Flow Field." Tesi di dottorato, 2015. http://www.fedoa.unina.it/10418/1/Greco_Carlo_Salvatore_27.pdf.

Full text

Abstract:

The present thesis deals with the investigation of synthetic jets heat transfer and flow field behaviour. Synthetic jets are devices used mainly for flow control and heat transfer. Such devices are able to "synthetize" a jet from the ambient in which they are embedded through a simple membrane oscillation inside a cavity with an orifice. Such features make them high reliable, silent and easy to be miniaturized. For these reasons, they are widely investigated also as electronic cooling devices. State of art literature shows that the heat transfer performance of these devices are promising. Unde

APA, Harvard, Vancouver, ISO, and other styles

49

Wu, Chia-Chu, and 吳家駒. "Electro-Magnetic Analysis of Near Field Wireless Power Transfer Modules." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/8k4ztw.

Full text

Abstract:

碩士<br>國立臺北科技大學<br>冷凍空調工程系所<br>102<br>Since mobile phones, electric vehicles and related applications vigorously emerge, wireless charging become an attractive technology for more convenient usage.Therefore, wireless power transmission league and protocol also appeared to promote this technology. The two main league are known as Wireless Power Consortium (WLC) and Alliance for Wireless Power (A4WP). The research of this article used the wireless power transmission module which developed by the ferrite vendor. We designed for inductors for differentleagues, combo inductors for Near Field Communi

APA, Harvard, Vancouver, ISO, and other styles

50

Crispo, Cuono Massimo. "Investigation of chevron synthetic jets flow field and heat transfer." Tesi di dottorato, 2017. http://www.fedoa.unina.it/12095/1/Crispo_cuonomassimo_30.pdf.

Full text

Abstract:

The present thesis analyses the effect of a saw-tooth exit pattern, called chevron exit, on the flow field and heat transfer of a synthetic jet. The chevron exits are generally applied at the trailing edge of jet engine nozzles for acoustic noise reduction and mixing enhancement. For the present study, the synthetic jet is obtained by a loudspeaker as oscillating element and a contoured nozzle as inlet/outlet aperture. Two experimental techniques are used: Stereoscopic Particle Image Velocimetry for the two-dimensional three-component flow field measurements and Infrared thermography in conjun

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!