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Dissertations / Theses on the topic 'Low energy'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Angelopoulos, V. D. "Low energy superstring theory." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379912.

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2

Mackay, Paul. "Low energy quantum gravity." Thesis, University of Newcastle Upon Tyne, 2012. http://hdl.handle.net/10443/1752.

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This thesis investigates two very different aspects of quantum gravity. In the first - and main - section, we examine the question of quantum gravitational contributions to the running of a coupling parameter alongside the various problems and issues that this raises. We treat quantum gravity as an e ective eld theory and use perturbative methods to address issues. Speci cally, we look at a '4-type scalar coupling. In a gauge-invariant way, we consider a non-minimally coupled, massive scalar eld, with non-constant background, in the presence of a cosmological constant and contrary to most of t

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3

Copeland, Fiona B. M. "Low energy rearrangement collisions." Thesis, Queen's University Belfast, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318881.

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4

Sharples, Graham Robert. "Low energy ion implantation." Thesis, University of Salford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327921.

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5

Xu, Ruize Ph D. Massachusetts Institute of Technology. "Low-frequency, low-amplitude MEMS vibration energy harvesting." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/115673.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 187-195).<br>Vibration energy harvesters work effectively only when the operating conditions match with the available vibration source. Typical resonating MEMS structures cannot be used with low-frequency, low-amplitude and unpredictable nature of ambient vibrations. Bi-stable nonlinear oscillator based energy harvesters are developed for lowering the operating frequency while widening the bandwidth, and are re

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6

Lindberg, Johan. "Korsplattformskommunikation med Bluetooth Low Energy." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-43317.

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This project investigated the current market regarding wireless net and the communication between the tools used for diagnostics/maintenance and an embedded system. Based on documentation obtained through interviews a demo system was created based on Bluetooth Low Energy (BLE) communication between an embedded system and an Android device. This report intends to describe the tools and methods used in the design of the demo system and the result of an analysis of the BLE communication. Bluetooth Low Energy is an exciting protocol with wide applicability within the industrial field. This project

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7

Parker, Jeffrey S. "Low-energy ballistic lunar transfers." Connect to online resource, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3284440.

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8

Cabiling, Alan P. "Ultra low-voltage energy harvesting." Thesis, Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/37593.

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Approved for public release; distribution is unlimited<br>The U.S. Navy has many opportunities to take advantage of energy sources that are usually wasted because these low power sources yield such low-voltages that a normal voltage converter is not efficient enough to harvest the energy. Low-voltage energy is available in many forms including solar, thermal, vibration, and electro-magnetic. The power that can be obtained from these sources on a small scale can be taken advantage of by using an ultra-low power boost converter that is specifically designed for energy harvesting applications. Th

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9

Mouncey, Simon Patrick. "Low energy ion-surface interactions." Thesis, Queen's University Belfast, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333823.

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10

Daub, Brian (Brian Hollenberg). "Low energy neutron-proton interactions." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76978.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 265-270).<br>There have been few measurements of cross sections for neutron-proton scattering and radiative capture below 1 MeV. Those measurements which do exist are at a small number of energies and are often inconsistent with theoretical models and with each other. We have conducted several experiments with the goal of obtaining improved data on these cross sections at the University of Kentucky (UKY) and the Los Alamos Neutron S

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11

Epstein, Charles Samuel. "Møller scattering at low energy." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119903.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2018.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 149-151).<br>Møller scattering is one of the most fundamental processes in QED. Its knowledge at high precision is necessary for a variety of modern nuclear and particle physics experiments. However, most treatments have neglected the electron mass, which is an

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12

Apo, Daniel Jolomi. "Low Frequency Microscale Energy Harvesting." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/49773.

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The rapid advancement in complimentary metal-oxide-semiconductor (CMOS) electronics has led to a reduction in the sizes of wireless sensor networks (WSN) and a subsequent decrease in their power requirements. To meet these power requirements for long time of operation, energy harvesters have been developed at the micro scale which can convert vibration energy into electrical energy. Recent studies have shown that for mechanical-to-electrical conversion at the mm-scale (or micro scale), piezoelectric mechanism provides the best output power density at low frequencies as compared to the other po

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13

Walsh, Philip R. "Advancements in low energy cardioversion." Thesis, Ulster University, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.694236.

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Atrial fibrillation (AF) is one of the commonest cardiac arrhythmias encountered in modern medicine and is associated with deterioration in cardiac function and increased risk of stroke resulting in significant morbidity and mortality. The most recently published data indicates that AF: (i) has a prevalence of circa. 5.5 % in individuals over the age of 55 years; increasing to 17.8 % in patients greater than 85 years, (ii) confers up to a 500 % increase in the risk of related stroke, (iii) accounts for 30 - 40 % of all cardiovascular related hospital admissions; with incidence rates and associ

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14

Kakaraparthi, Himabindu. "Low energy wake-up logic." College Park, Md. : University of Maryland, 2003. http://hdl.handle.net/1903/36.

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Thesis (M.S.) -- University of Maryland, College Park, 2003.<br>Thesis research directed by: Dept. of Electrical and Computer Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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15

Hlavica, Marian. "Low energy block of apartments." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226714.

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The goal of the project is development of a project documentation for a building: Low energy block of apartments. The documentation was processed in the depressed for construction realization. It solves a four floor block of apartments with flat warm roof and partially depressed parking garage. The structure is designed with risen requirements on thermal properties. The project also solves a concept of heating system. Its energy efficiency was analysed using precise calculation acc. ČSN 73 0540 and processed statement of energy efficiency. The result energy consumption of the structure is B –

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16

Reiter, Michal. "Low-energy block of apartments." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227864.

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Diploma thesis is aimed on solution of project documentation design of a four-storey low-energy block of apartments with a flat roof in the degree of project realization. The object has a collective garage on first floor and no basement. The structure is designed with the emphasis on overall energy saving, which was documented by detailed calculation of the energy performance of the building under Decree No.78 / 2013 Coll. and ČSN 73 0540-2.

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17

Ford, Michael J. "Studies in Nuclear Energy: Low Risk and Low Carbon." Research Showcase @ CMU, 2017. http://repository.cmu.edu/dissertations/872.

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The amount of greenhouse gas emissions mitigation required to prevent the most dramatic climate change scenarios postulated in the 2014 IPCC Synthesis Report is substantial. Prior analyses have examined the potential for nuclear energy to play a role in decarbonizing the energy sector, one of the largest contributors to emissions worldwide. However, advanced, non-light water reactors, while often touted as a viable alternative for development, have languished. Large light water development projects have a repeated history of extended construction timelines, re-work delays, and significant capi

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18

Subtil, Lacerda Juliana. "Low-carbon innovation: Renewable energy drivers and policies." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/399892.

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El desarrollo de la innovación baja en carbono es necesario para generar energía suficiente y, al mismo tiempo, reducir las emisiones de gases de efecto invernadero de manera suficientemente rápida para evitar un cambio climático extremo. Esto hace con que sea fundamental el entendimiento de los factores capaces de acelerar el desarrollo y la difusión de la innovación baja en carbono. La innovación baja en carbono en el sector energético involucra diversos desafíos en función de la especificidad de sus características y dinámica, razón por la hay renovado interés en su investigación. Est

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19

Logan, Joel Clifton. "Energy efficiency enhancements to a low energy high performance building." [Ames, Iowa : Iowa State University], 2008.

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20

Persson, Johannes. "Low-energy buildings : energy use, indoor climate and market diffusion." Doctoral thesis, KTH, Energiprocesser, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-143480.

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Low-energy buildings have, in recent years, gained attention and moved towards a large-scale introduction in the residential sector. During this process, national and international criteria for energy use in buildings have become stricter and the European Union has through the Energy Performance of Buildings Directive imposed on member states to adapt their building regulations for ‘Nearly Zero Energy Buildings’, which by 2021 should be standard for new buildings. With a primary focus on new terraced and detached houses, this thesis analyses how the concept of low-energy buildings may be furth

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21

Sfakianakis, Dimitrios. "A dynamic energy modelling approach to low energy ship design." Thesis, University of Strathclyde, 2015. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25918.

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Despite remarkable advances in naval architecture in the past few years, limited effort has been expended to improve the energy efficiency of ships due to the relatively low price of fuel oil and lack of stringent environmental regulations. However, the ever-growing intercontinental trade has resulted in an increase of greenhouse gas emissions from ships that triggered the introduction of mandatory environmental measures and shifted the focus of the shipping industry towards more energy efficient designs and operations. This thesis focus is on improving the energy efficiency of ships during de

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22

Abramowitz, Peter Prep. "Forming nitrides with low-energy ions on low-K dielectrics /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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23

Lozza, Valentina. "Low energy low background photon counter for wisp search experiments." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3719.

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2008/2009<br>Remarkable interest has recently arisen about the search for Weakly Inter- acting Sub-eV Particles (WISPs), such as axions, Axion Like Particles (ALPs), Minicharged and chameleon particles, all of which are not included in the Stan- dard Model. Precision experiments searching for WISPs probe energy scales as high as 10^6 TeV and are complementary to accelerator experiments, where the energy scale is a few TeV. The axion, in particular, is the oldest studied and has the strongest theoretical motivation, having its origin in Quantum Chromodynamics. It was introduced for the

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24

Ekelund, Øivind. "Low Energy AES Hardware for Microcontroller." Thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9096.

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<p>Cryptographic algorithms, like the Advanced Encryption Standard, are frequently used in todays electronic appliances. Battery operated devices are increasingly popular, creating a demand for low energy solutions. As a microcontroller is incorporated in virtually all electronic appliances, the main objective in this thesis is to evaluate possible hardware implementations of AES and implement a solution optimized for low energy consumption, suited for incorporation in a microcontroller. A good cost/performance balance is also a design goal. An existing solution based on a 32 bit architecture

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25

Stadler, Paul Kevin. "Low energy supergravity from string theory." Thesis, Royal Holloway, University of London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391920.

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26

Norman, James P. "Applications of low energy superstring theory." Thesis, University of Newcastle Upon Tyne, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417532.

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27

Smith, Noel S. "Ultra-low energy sims depth profiling." Thesis, University of Warwick, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338671.

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28

Pringle, Simon Jeffrey. "Low energy cathodoluminescence of alkali halides." Thesis, University of York, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316177.

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29

Monckton, Rhiannon. "Low energy electron interactions with water." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/low-energy-electron-interactions-with-water(c807bd78-59e3-4570-be3c-34feafc01fdf).html.

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Understanding the radiation chemistry of water is important in many disciplines including the nuclear industry, astrochemistry, and medicine. In recent years, low-energy electrons have been paid much greater attention, due to their abundance and reactivity in irradiated materials. Electrons with energies < 20 eV may interact via the dissociative electron attachment (DEA) mechanism, which has been found to cause single-strand breaks in DNA.DEA in water involves the capture of a low energy electron by a neutral water molecule into an outer orbital and is generally accompanied by excitation of th

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30

Guerrero, Orbe Jaysson Esteban. "Transactive Energy in Low-Voltage Networks." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/23226.

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Over recent years, distributed energy resources (DER) have been the object of many studies, which recognise and establish their emerging role in the future of power systems. Given this context, the concept of transactive energy (TE) has emerged as a central element to the vision of the future grid. The transition to the emerging TE concept requires to tap the inherent flexibility of the demand-side. In this context, the concept of peer-to-peer (P2P) energy trading between consumers and prosumers is one of the new scenarios of growing importance in the domain of distribution networks. This loc

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31

Deleporte-Dumont, Alix. "Low-energy spectrum of Toeplitz operators." Thesis, Strasbourg, 2019. http://www.theses.fr/2019STRAD004/document.

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Les opérateurs de Berezin--Toeplitz permettent de quantifier des fonctions, ou des symboles, sur des variétés kähleriennes compactes, et sont définies à partir du noyau de Bergman (ou de Szeg\H{o}). Nous étudions le spectre des opérateurs de Toeplitz dans un régime asymptotique qui correspond à une limite semiclassique. Cette étude est motivée par le comportement magnétique atypique observé dans certains cristaux à basse température. Nous étudions la concentration des fonctions propres des opérateurs de Toeplitz, dans des cas où les effets sous-principaux (du même ordre que le paramètre semicl

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32

Slepánek, František. "Administrative building with low energy footprint." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227449.

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The aim of this diploma thesis is trying to solve difficulties connected with administrative buildings. In this thesis we are talking about possibility that administrative building can have low energy footprint. Most of energy consumption of administrative building is not created by heating but mostly by cooling and by consumption of office equipment. That is why there have been used modern equipment of the building as well as automatic control of building equipment.

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33

Millo, Raffaele. "Topological Dynamics in Low-Energy QCD." Doctoral thesis, Università degli studi di Trento, 2011. https://hdl.handle.net/11572/368358.

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In this work we discuss the role of topological degrees of freedom in very low-energy hadronic processes (vacuum polarization and vacuum birefringence). We also present an approach which enables to investigate the microscopic dynamics of non-perturbative processes: this is achieved by constructing an effective statistical theory for topological vacuum gauge configurations, by means of Lattice QCD simulations.

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Millo, Raffaele. "Topological Dynamics in Low-Energy QCD." Doctoral thesis, University of Trento, 2011. http://eprints-phd.biblio.unitn.it/475/1/Tesi_di_Dottorato-_Raffaele_Millo.pdf.

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In this work we discuss the role of topological degrees of freedom in very low-energy hadronic processes (vacuum polarization and vacuum birefringence). We also present an approach which enables to investigate the microscopic dynamics of non-perturbative processes: this is achieved by constructing an effective statistical theory for topological vacuum gauge configurations, by means of Lattice QCD simulations.

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35

CAMPIONE, Antonino. "Electrodialysis modelling for low energy desalination." Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/395212.

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36

Wijesinghe, Pushpa Indumathie. "Energy Deposition Study of Low-Energy Cosmic Radiation at Sea Level." Digital Archive @ GSU, 2007. http://digitalarchive.gsu.edu/phy_astr_diss/14.

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In this dissertation work, a computer simulation model based on the Geant4 simulation package has been designed and developed to study the energy deposition and track structures of cosmic muons and their secondary electrons in tissue-like materials. The particle interactions in a cubic water volume were first simulated. To analyze the energy deposition and tracks in small structures, with the intention of studying the energy localization in nanometric structures such as DNA, the chamber was sliced in three dimentions. Validation studies have been performed by comparing the results with experim

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37

Turner, Charlotte Heather. "Energy, economic and environmental appraisal of an innovative low energy building." Thesis, University of East Anglia, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439904.

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38

Olsen, Erik L. (Erik Lee) 1979. "Performance comparison of U.K. low-energy cooling systems by energy simulation." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/37195.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2002.<br>Includes bibliographical references (p. 115-119).<br>Building energy simulation is an important tool for evaluating the energy consumption of a building and can provide guidance in the design of a building and its mechanical systems. EnergyPlus is a new energy simulation program meant to be a major advance over existing energy simulation programs. This study uses EnergyPlus to compare several alternative low-energy cooling systems for an office building in suburban London and compare them to the chilled ceili

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39

Sudhakar, Soumya. "Balancing actuation energy and computing energy in low-power motion planning." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127096.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, May, 2020<br>Cataloged from the official PDF of thesis.<br>Includes bibliographical references (pages 89-91).<br>Inspired by emerging low-power robotic vehicles, we identify a new class of motion planning problems in which the energy consumed by the computer while planning a path can be as large as the energy consumed by the actuators during the execution of the path. As a result, minimizing energy requires minimizing both actuation energy and computing energy since computing energy is no longer ne

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Xu, Ruize Ph D. Massachusetts Institute of Technology. "The design of low-frequency, low-g piezoelectric micro energy harvesters." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74954.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 107-112).<br>A low-frequency, low-g piezoelectric MEMS energy harvester has been designed. Theoretically, this new generation energy harvester will generate electric power from ambient vibrations in the frequency range of 200~30OHz at excitation amplitude of 0.5g. Our previous energy harvester successfully resolved the gain-bandwidth dilemma and increased the bandwidth two orders of magnitude. By utilizing a doubly clam

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Jeoung, Jun Sik. "Structural and electrical characterization of low-dose low-energy SIMOX materials." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280614.

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The effects of implantation dose, energy, and annealing conditions on the microstructure and the formation and evolution of defects in the low-dose, low-energy SIMOX materials were investigated using transmission electron microscopy (TEM), scanning electron microscopy, scanning electron microscopy (SEM), optical microscopy secondary ion mass spectroscopy (SIMS), and Rutherford backscattering spectrometry (RBS). The quality of top Si layer and buried oxide layer (BOX) was also characterized with the electrical measurements. From the structural characterization of 100 keV implanted samples, it w

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Darroudi, Seyed Mahdi. "Contributions to bluetooth low energy mesh networks." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/669722.

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Bluetooth Low Energy (BLE) has become a popular Internet of Things (IoT) technology. However, it was originally designed to only support the star topology. This PhD thesis investigates and evaluates different Bluetooth Low Energy (BLE) mesh network approaches, including existing ones (such as the Bluetooth Mesh standard), and our own solution for IPv6-based BLE mesh networking (6BLEMesh). The thesis comprises 6 main contributions: 1.- A comprehensive survey on existing BLE mesh networking proposals and a taxonomy for BLE mesh network solutions. 2.- An energy consumption model for Bluetooth M

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Bagheri, Ardeshir. "The pion-nucleon interaction at low energy." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26770.

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The π-p → γn and π-p → π⁰n reactions were studied for laboratory pion kinetic energies of 50, 66, 80, 95, 110, and 125 MeV at 9 angles between 30° and 140°, using a large Nal(Tl) detector, TINA. The results are much more accurate than previous data. The radiative capture differential cross-sections are compared with previous data and with several calculations and will specify more precisely the isoscalar amplitudes in multipole analyses. They are consistent with earlier data and confirm the principle of detailed balance, but indicate that the theoretical calculations cannot reproduce the nucle

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44

Basta, Marek. "Low energy photovoltaic conversion in MIND structures." Thesis, Strasbourg, 2013. http://www.theses.fr/2013STRAD019/document.

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Dispositifs photovoltaïques d'aujourd'hui convertissent l'énergie solaire en électricité de manière propre, renouvelable et inépuisable et représentent un remplacement possible pour les combustibles fossiles. Toutefois, afin de rivaliser avec les sources d'énergie classiques une augmentation significative de l'efficacité de conversion est inévitable. Dans ce travail, nous nous concentrons sur des aspects pouvant propulser le rendement de conversion au-dessus des limites de cellules présentes. La première partie de l'étude est consacrée à de nouvelles idées théoriques considérés comme le photov

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Thomas, Karin. "Low Speed Energy Conversion from Marine Currents." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8400.

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46

Katechou, Elissavet K. "Compactification and effective low energy field theories." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238148.

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47

Johansson, Mathias, and Mikael Karlsson. "Utvärdering av inomhuslokalisering med Bluetooth Low Energy." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Data- och elektroteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-26788.

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Wireless communication is becoming more common, a relatively new technology within the area is Bluetooth Low Energy. It’s been developed to be energy efficient and in regard to compatibility. Alongside the growth of wireless technology, scientists and companies are looking for new areas of use. One of these is localization, which means to determine the position of a moving device with the use of stationary devices, an example of this would be GPS.This report means to evaluate indoor localization using Bluetooth Low Energy and was made for Combitech AB in Jönköping. The purpose of the work was

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48

Wang, Ping. "Bluetooth Low Energy - privacy enhancement for advertisement." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for telematikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26714.

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The aim of this project is to design, simulate, and implement a privacy enhancement protocol over BLE advertising channels. The design of the privacy enhancement is generic and modular. Due to the risk of privacy disclosure and device tracking by adversary, the main focus will be put on designing and implementing message confidentiality, replay prevention, and anti-tracking of device over BLE advertising channels. Bluetooth core specification 4.1 is used as baseline for design and implementation. In order to provide resistance against replay attacks and device tracking, this project has taken

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Shvets, Dmitry. "Analysis of AC low-voltage energy harvesting." Thesis, Monterey, California. Naval Postgraduate School, 2014. http://hdl.handle.net/10945/43719.

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Approved for public release; distribution is unlimited<br>Piezoelectricity is a material property that generates an electric charge proportional to the mechanical stress placed on the material. This phenomenon was first discovered by the Curie brothers in 1880. This material property gives the ability to turn vibrations into an electrical waveform, but power electronics is necessary to harness this low-level energy. AC power is often produced at the power plant level in modern society; however, low voltage AC power is widely available in vibrational form. The U.S. Navy may be able to util

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Dando, Owen Robert. "Topological defects in low-energy string gravity." Thesis, Durham University, 1999. http://etheses.dur.ac.uk/4496/.

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Cosmologists are interested in topological defects as a possible source for the primordial density perturbations which seeded structure formation through gravitational instability. In this thesis, the gravitational properties of various topological defects are studied in the context of low-energy string theory, a likely modification of Einstein gravity at the high energy scales prevalent in the early universe. We consider in turn global monopole, local monopole, global cosmic string and global texture defects, allowing for an arbitrary coupling of defects to the string theory dilaton. For glob

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