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Dissertations / Theses on the topic 'TESLA'

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Published: 4 June 2021
Last updated: 30 July 2024

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1

Vladzievska, P., Наталія Ігорівна Муліна, Наталия Игоревна Мулина, and Nataliia Ihorivna Mulina. "Tesla – electric cars." Thesis, Sumy State University, 2020. https://essuir.sumdu.edu.ua/handle/123456789/77851.

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Emissions of exhaust and crankcase gases into the atmosphere are large, that is why using cars with an internal combustion chamber is not very useful. The creation of a comfortable and less polluting vehicle is relevant. To realize this idea, purer energy is needed, it can be obtained by using electricity. Tesla Motors Inc is a manufacturer of electric cars using electric motors. The company was founded by Elon Musk, JB Strobel, Martin Ebergardd, Mark Tarpening and Ian Wright.
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2

Dieringer, Matthias [Verfasser]. "Schnelle zweidimensionale Kartierung der longitudinalen Relaxationszeit T1 bei 1.5 Tesla, 3 Tesla und 7 Tesla mittels Magnetresonanztomographie / Matthias Dieringer." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2014. http://d-nb.info/1062536673/34.

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3

Yetişir, Filiz. "Parallel radiofrequency transmission for 3 Tesla and 7 Tesla magnetic resonance imaging." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113982.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 141-146).
Magnetic resonance imaging (MRI) is a noninvasive imaging technique with high soft tissue contrast. MR scanners are characterized by their main magnetic field strength. Commercially available clinical MR scanners commonly have main field strengths of 1.5 and 3 Tesla. Researchers increasingly explore clinical benefits of higher field strength scanners as they provide higher signal to noise ratio and higher resolution images. On the other hand, higher field strength imaging comes with increased image shading leading to non-uniform image contrast. Moreover, the tissue heating rate due to radiofrequency (RF) energy deposition (also called specific absorption rate or SAR) increases, limiting the imaging speed. Parallel RF transmission (pTx) was proposed to address both of these challenges by optimization of RF pulses transmitted from multiple independent channels simultaneously. However, both the RF pulse design and RF safety management become more complicated with pTx. In this work, a framework to apply pTx to 3T fetal and 7T brain imaging is developed to address the image shading and high SAR issues. Fetal imaging where a large pregnant torso is imaged rapidly to avoid fetal motion artifacts, suffers from similar levels of image shading and imaging limitations by SAR to 7T brain MRI. Hence the same techniques benefit both application domains. First, a SAR constrained pTx RF pulse design technique is developed for slice selective high flip angle imaging which is clinically the most common imaging technique. Next, the performance of the developed technique in reducing SAR and the image contrast non-uniformity is demonstrated through simulations and in phantom experiments for 7T brain imaging. Then, a comprehensive RF safety workflow for an 8 channel pTx system at 7T is developed. Finally, the potential of pTx for fetal imaging at 3T is demonstrated with simulation studies and a protected fetus mode of pTx was created using additional constraints in the RF pulse design. By addressing the two main RF transmission challenges associated with high and ultrahigh field MRI, this work aims to help bring the benefits of 7T brain imaging into routine clinical use and significantly improve the clinical experience for 3T fetal imaging.
by Filiz Yetişir.
Ph. D.
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4

Gomes, Nuno Filipe Rodrigues. "Equity research - Tesla, Inc." Master's thesis, Instituto Superior de Economia e Gestão, 2017. http://hdl.handle.net/10400.5/15102.

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Mestrado em Finanças
O objetivo deste projeto é determinar o valor da ação da Tesla em 31 de dezembro de 2018. Começamos por explicar o negócio da Tesla e os seus produtos. Depois damos a conhecer os administradores executivos e não executivos da empresa. A isto segue-se a análise das três indústrias onde a Tesla opera: automóvel, armazenamento de energia e energia solar. Em seguida, identificamos as vantagens competitivas da Tesla, que são muitas na indústria automóvel. Fazemos também uma análise SWOT para identificar os seus pontos fortes e fracos, bem como as oportunidades e ameaças que a rodeiam. Depois de conhecer a empresa, passamos para a fase de análise financeira. Descobrimos que a Tesla relatou fluxos de caixa livres negativos em quase todos os anos desde que se tornou uma empresa cotada em 2009. Apesar disso, a empresa não teve problemas em financiar-se nos mercados e tem uma capitalização de mercado elevadíssima, que é superior, em 9 biliões de dólares, à da Ford, uma fabricante que produziu 75 vezes mais carros que a Tesla em 2016. De seguida, prevemos o desempenho futuro de Tesla, principalmente com recurso à análise regressiva dos resultados financeiros passados. Nós derivamos o preço target de 321 dólares para 31 de Dezembro de 2018 usando uma abordagem que dá uma peso igual a 3 métodos de avaliação diferentes. Nós acabamos recomendando a venda da ação da Tesla e identificando os catalisadores que irão diminuir o valor das ações para o nosso preço-alvo.
The purpose of this project is to determine the value of Tesla stock as of December 31, 2018. We start by explaining Tesla's business and its products. Then, we focus on the firm's management and board of directors. This is followed by the analysis of the three industries where Tesla operates: automotive, energy storage and solar energy. Next, we identify Tesla's competitive advantages, which are many in the automotive industry. We also do a SWOT analysis in order to identify its internal strengths and weaknesses, as well as its external opportunities and threats. After we get to know the company, we move to the financial analysis phase to see how the company has performed in the last years. We discovered that Tesla has been reporting negative free cash flows for nearly every year since its IPO in 2009. Despite this, the company has not had any problems getting money in the markets and it has an extraordinary market capitalization, which is higher, by $9 billion, than Ford's, a carmaker with a production volume 75 times greater. Next, we forecast Tesla' s future performance, which mostly based on regression analysis of the historical financials, and with the results, we value Tesla stock. We derive our December 31, 2018 price target of $321 using a blended approach that gives equal weightage to three different valuation methods. We culminate by recommending to sell/short Tesla stock and identifying the catalysts that will decrease the stock value to our target price.
info:eu-repo/semantics/publishedVersion
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5

Liapine, Alexei. "Strahllagemonitor für das TESLA-Energiespektrometer." [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=970204310.

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6

McIntyre, D. J. O. "NMR microscopy at 9.4 Tesla." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386215.

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7

Zuliukov, I., Алла Миколаївна Дядечко, Алла Николаевна Дядечко, and Alla Mykolaivna Diadechko. "Tesla CYBERTRUCK - beauty in simplicity." Thesis, Sumy State University, 2020. https://essuir.sumdu.edu.ua/handle/123456789/77940.

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Tesla CYBERTRUCK was unveiled in the November of the last year and is still being widely discussed. It is said to be a mix of utility and performance but not everyone is convinced by this statement. Many people are concerned by its design. It is very planar and minimalistic but there is a reason for that, as the body of Tesla CYBERTRUCK is made of ultra-hard 30X steel. It cannot be stamped because it breaks the stamping press. This rigidity makes people question the safety of this truck which is not a concern considering that Tesla is famous for making the safest cars in the world.
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8

Serva, Romo Michael Juan, Basagoitia Julio Antonio Rojas, and Vilchez Roberto Huaro. "Planeamiento estratégico Tesla 2019-2021." Master's thesis, Universidad del Pacífico, 2019. http://hdl.handle.net/11354/2612.

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Año tras año, el incremento constante del precio del petróleo ha generado incertidumbre sobre su escasez; innovaciones como el fracking han logrado reducir y prolongar el uso del petróleo. Con el conocimiento de esta problemática, las grandes empresas automovilísticas en el tiempo han desarrollado motores con requerimientos de combustible cada vez menores para mejorar la eficiencia y así reducir el agotamiento acelerado del petróleo. Luego de analizar la industria de manufactura automotriz, utilizando las 5 fuerzas de Porter, podemos inferir que las barreras a la entrada de nuevos competidores son altas, la amenaza de sustitutos es baja, el poder de los proveedores es medio, el poder del comprador es bajo y se determina una alta rivalidad entre los competidores.
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9

Arias, Alderete Cattia Cecilia, Córdova Telmo Ricardo Barba, and de Zevallos Gonzáles Vigil Verónica Ortiz. "Plan estratégico para Tesla Inc." Master's thesis, Universidad del Pacífico, 2019. http://hdl.handle.net/11354/2326.

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Tesla Inc. (Tesla) es una empresa estadounidense fundada en el año 2003 en Silicon Valley, California, dedicada a la fabricación y la venta de vehículos totalmente eléctricos, así como de sistemas de almacenamiento y generación de energía. Si bien ha logrado ser reconocida como una empresa innovadora en la industria automotriz, por su desarrollo tecnológico, Tesla viene siendo cuestionada principalmente por retrasos en la entrega de los vehículos y resultados financieros poco favorables. Considerando esta situación, se ha elaborado el presente plan estratégico para la línea de automóviles de pasajeros de Tesla, a fin de proponer acciones que le permitan corregir los problemas identificados y cumplir con los objetivos de crecimiento del negocio, a la vez que fortalece su posicionamiento de marca.
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10

Wagner, Susi. "MRT-basierte Volumetrie und T2-Zeit-Bestimmung bei 3 Tesla und 1,5 Tesla am Patellarknorpel." Diss., kostenfrei, 2008. http://edoc.ub.uni-muenchen.de/8584/.

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11

Cheng, Bastian Jia-Luo [Verfasser]. "Myokardiale MRT-Perfusionsbildgebung bei 3 Tesla im Vergleich zu 1,5 Tesla / Bastian Jia-Luo Cheng." Bonn : Universitäts- und Landesbibliothek Bonn, 2011. http://d-nb.info/1016012969/34.

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12

Andrade, Max Dorian [Verfasser], and Jens [Akademischer Betreuer] Theysohn. "Magnetfeldinduzierte vestibuläre Effekte bei 7-Tesla-MRT-Untersuchungen im Vergleich zu 1,5 Tesla und 0 Tesla / Dorian Rafael Ernesto Nikolas Andrade Max ; Betreuer: Jens Theysohn." Duisburg, 2020. http://d-nb.info/1219468002/34.

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13

Matteucci, Andrea. "Tesla, cambiare il concetto di automobile." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/24676/.

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La tesi presenta una spiegazione del pensiero e della tecnologia legati all'azienda Tesla. Nel primo capitolo vengono presentati quelli che sono gli approcci mentali che contraddistinguono questo brand, mentre nel secondo viene analizzata la tecnologia legata ai diversi prodotti. In questo modo viene fatta per prima cosa una panoramica generale della filosofia aziendale, per poi andare nel dettaglio con i diversi temi del secondo capitolo.
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14

Haro, Alvarado Hermes Christian, Palacios Susana Lisseth Reynoso, and Durán Juliana Cecilia Alvarado. "Caso Tesla : plan estratégico 2019-2021." Master's thesis, Universidad del Pacífico, 2019. http://hdl.handle.net/11354/2530.

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En el presente trabajo proponemos el planeamiento estratégico 2019-2021 para Tesla Motors, empresa estadounidense fabricante de vehículos eléctricos desde el año 2003. La idea inicial de Tesla era comercializar vehículos eléctricos comenzando con un automóvil deportivo dirigido a un público con alto poder adquisitivo; tiempo después, se dirigió a un público más convencional con nuevos modelos. Así fue, que el incremento del uso de vehículos eléctricos a nivel global fue la misión de Tesla, acelerando en el mundo la transición hacia el vehículo eléctrico, ofreciendo vehículos más accesibles al mercado y buscando la innovación energética. Si bien es cierto, ha tenido problemas en generar ganancias, su capital actual proviene de inversiones privadas y de capital de los principales accionistas. De acuerdo al análisis del entorno general expuesto en el presente trabajo, podemos decir que Tesla obtiene el 53% de sus ingresos en el mercado estadounidense, un mercado orientado hacia el libre mercado, pero con cambios políticos en los últimos años. Estas tendencias son importantes para Tesla, ya que su negocio automotriz representa un negocio dominante. Tesla cuenta internamente con un equipo altamente capacitado y especializado en tecnología, innovación y desarrollo, así como también en comunicación y comercialización (con un único modelo de venta); sin embargo, existen brechas que dificultan el desarrollo estratégico. Nuestra propuesta prioriza 3 puntos importantes: concentrarse en mantener su crecimiento de ventas, mejorar la eficiencia en sus operaciones y mejorar la situación financiera para que esta no ponga en peligro sus planes a largo plazo. La fortaleza de Tesla es que ha demostrado tener capacidad para hacer frente a las adversidades de producción y seguir fabricando modelos de vehículos que son de gran atracción en el mercado. Además de ello, la marca es un claro reflejo de posicionamiento.
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15

Mihai, Georgeta. "Methods for brain iron evaluation in normal aging T2 and phase measurements at 3 tesla and 7 tesla /." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1189791295.

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16

Harenberg, Mareile [Verfasser]. "Kardiale Bildgebung in einem offenen 1,0 Tesla-Magnetresonanztomographen und Vergleich mit einem konventionellen 1,5 Tesla Tunnelsystem / Mareile Harenberg." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2020. http://d-nb.info/1223927946/34.

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17

Bingham, Kathryn Ruth. "In vivo '1'3C spectroscopy at 3 Tesla." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262964.

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18

Wadhwa, Preeti H. "Secure building automation system using Tesla protocol." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1601311.

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Wireless broadcast communication systems are continuously facing many threats in terms of various security attacks on the network. Broadcast communication has well known advantages in large scale networks such as building automation system, home automation and more. The need for verification and authentication in the broadcast communication had motivated us to develop a unique security algorithm for a robust authentication mechanism. This project proposes a unique methodology that combines the advantage of the gradient based routing and cryptography in a network. For implementation of the proposed algorithm, an example of building automation has been used. Principles of TESLA protocol were considered, and modified to craft a novel approach that provides a highly secure broadcast authentication mechanism in the building automation system. Implementation and results produced during the development phase of the project affirms the effectiveness of the proposed algorithm.

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19

Potapenko, Mykyta. "Modern world with electric cars – Tesla incorporation." Thesis, Київський національний університет технологій та дизайну, 2019. https://er.knutd.edu.ua/handle/123456789/13117.

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20

Castro, Alva Katherine Melissa, Paredes Claudia Hernández, and Manrique Diana Marcos-Sánchez. "Plan estratégico para Tesla Motors 2018-2021." Master's thesis, Universidad del Pacífico, 2019. http://hdl.handle.net/11354/2536.

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El presente trabajo es el desarrollo del plan estratégico para Tesla Inc. en el periodo 2019-2021, el cual busca incrementar la participación de mercado en Estados Unidos, en una coyuntura de transición hacia el uso de los vehículos eléctricos. Tesla Inc. es la compañía líder en innovación y diseño de autos eléctricos de alta gama. En el 2017, lanzó el modelo 3, el cual está orientado a un segmento masivo. Este es un gran reto para la empresa, ya que representa un cambio disruptivo en el modelo de negocio. Del análisis externo podemos concluir que la industria automotriz es atractiva, ya que las barreras de entrada son altamente restrictivas y el mercado de vehículos eléctricos se encuentra en un crecimiento exponencial. Por otro lado, hay un incremento de la consciencia ambiental a nivel global, lo que obliga a los gobiernos a promulgar leyes a favor del uso de energías sostenibles. Asimismo, en el análisis interno identificamos, como factores determinantes de éxito de Tesla, la innovación, diseño, la marca y el know how. En base al análisis realizado, la estrategia competitiva para Tesla Inc. deberá ser diferenciación, debido a que la compañía ofrece innovación y tecnología sostenible en sus automóviles. Sin embargo, por el incremento de competidores dentro del mercado de vehículos eléctricos, la compañía debe mantener su competitividad buscando eficiencias en el proceso de fabricación.
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21

Fares, Luca <1993&gt. "Building a Business Ecosystem: Tesla Case Study." Master's Degree Thesis, Università Ca' Foscari Venezia, 2018. http://hdl.handle.net/10579/12229.

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Nel contesto moderno, in un panorama di business caratterizzato da continua innovazione, hanno sempre più successo quei player che sono in grado di estrarre il massimo del valore dagli ecosistemi di business. La tesi in questione intende indagare come gli ecosistemi di business nascono e quali sono le dinamiche che li caratterizzano. Il primo capitolo considera le diverse tipologie di innovazione ed I loro diversi impatti in un contesto di information economy, in cui la presenza di reti di imprese e di individui caratterizza profondamente la loro diffusione. Nel secondo capitolo il concetto di ecosistema di business è analizzato nel dettaglio: che cos’è e quali sono le sue caratteristiche, i suoi attori principali e i ruoli che questi possono ricoprire. Viene poi esaminato nel dettaglio secondo quali leve si può creare un ecosistema di business, considerando i fattori strategici scatenanti. Infine il caso empirico su Tesla, la multinazionale californiana, vuole studiare come un’azienda tecnologica possa influenzare la creazione di un ecosistema nel settore delle auto elettriche, sfruttando una serie di innovazioni disruptive e le potenzialità di una piattaforma condivisa.
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22

Sargsyan, Vahagn. "Cavity beam position monitor for the TESLA-cryomodule cross-talk minimization /." [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969232640.

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23

Tek, Ferhat [Verfasser], and Ulrike [Akademischer Betreuer] Wedegärtner. "Vergleich von ΔR2* im Gehirn von Schaffeten währendHypoxie zwischen 1,5 Tesla und 3,0 Tesla MRT / Ferhat Tek. Betreuer: Ulrike Wedegärtner." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2016. http://d-nb.info/1111778299/34.

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Tek, Ferhat Verfasser], and Ulrike [Akademischer Betreuer] [Wedegärtner. "Vergleich von ΔR2* im Gehirn von Schaffeten währendHypoxie zwischen 1,5 Tesla und 3,0 Tesla MRT / Ferhat Tek. Betreuer: Ulrike Wedegärtner." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2016. http://nbn-resolving.de/urn:nbn:de:gbv:18-80086.

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25

Haltaufderheide, Kirsten [Verfasser]. "Darstellung von Hirnnerven im Bereich des Hirnstamms mit dem 3,0 Tesla MRT im Vergleich zum 1,5 Tesla MRT / Kirsten Haltaufderheide." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2009. http://d-nb.info/1023497832/34.

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26

Wang, Meng. "A Tesla-Blumlein PFL-Bipolar pulsed power generator." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/22802.

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A Tesla-Blumlein PFL-Bipolar pulsed power generator, has been successfully designed, manufactured and demonstrated. The compact Tesla transformer that it employs has successfully charged capacitive loads to peak voltages up to 0.6 MV with an overall energy efficiency in excess of 90%. The Tesla driven Blumlein PFL generator is capable of producing a voltage impulse approaching 0.6 MV with a rise time close to 2 ns, generating a peak electrical power of up to 10 GW for 5 ns when connected to a 30 Ω resistive load. Potentially for medical application, a bipolar former has been designed and successfully implemented as an extension to the system and to enable the generation of a sinusoid-like voltage impulse with a peak-to-peak value reaching 650 kV and having a frequency bandwidth beyond 1 GHz. This thesis describes the application of various numerical techniques used to design a successful generator, such as filamentary modelling, electrostatic and transient (PSpice) circuit analysis, and Computer Simulation Technology (CST) simulation. All the major parameters of both the Tesla transformer, the Blumlein pulse forming line and the bipolar former were determined, enabling accurate modelling of the overall unit to be performed. The wide bandwidth and ultrafast embedded sensors used to monitor the dynamic characteristics of the overall system are also presented. Experimental results obtained during this major experimental programme are compared with theoretical predictions and the way ahead towards connecting to an antenna for medical application is considered.
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Kumar, Rajesh. "High power Tesla driven miniature plasma opening switch." Thesis, Loughborough University, 2009. https://dspace.lboro.ac.uk/2134/5478.

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The plasma opening switch (POS) is used in pulsed power systems where a very fast opening and high current switch is required. Plasma is injected into the switch, which carries a large conduction current, before it opens in a process that lasts for a few nanosecond and transfers the current to a parallel-connected load at a much increased voltage and with a much shorter rise time. The conduction and opening times of the switch are dependent on plasma parameters such as the distribution, speed and species, all of which are determined by the plasma source. Most of the earlier reported work involves large dimension POSs and a correspondingly high input current (more than 100 kA) and uses carbon plasma. One main objective of the present research was to achieve a low input current (20 kA) and miniaturised POS by using hydrogen plasma rather than carbon plasma on account of its lower mass. A cable gun was selected for producing the plasma, since although this produces both hydrogen and carbon plasma these arise different times during its operation. For the present application a Tesla transformer was used in preference to a Marx generator to produce an initial high voltage pulse for the system, on the basis of its simpler design and cost effectiveness. This transformer together with an associated water PFL (pulse forming line) and pressurised switch was capable of producing a load current in excess of 20 kA with a rise time of 53 ns, which was fed through the POS to the final load. Special diagnostics arrangements were necessary to measure the fast high current and voltage pulse a in nonintrusive way. Faraday cups and a high speed camera were used to measure the plasma parameters. The overall system built (i.e. including the POS) is capable of producing a 22 kA current with a rise time of 5 ns, and of generating a power of more than 10 GW. Much of the work detailed in the thesis has already been presented in peer reviewed journals and at prestigious international conferences.
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Krishnan, Vedavalli Gomatam. "Design and Fabrication of cm-scale Tesla Turbines." Thesis, University of California, Berkeley, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3720613.

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This dissertation discusses the design and scaling characteristics of Tesla – or so-called “friction” – turbines, and offers design solutions for achieving optimum performance given the input specifications. The research covers turbines ranging from sub-watt power scavenging designs to watt-range mobile applications to kilowatt-range renewable energy applications. The characteristics of the turbine are demonstrated using micro fabrication, theoretical analysis, and ANSYS, COMSOL, and MATLAB simulations. A MATLAB GUI is provided for generating design specifications and turbine performance sensitivity.

In Tesla turbines, the fluid profile and the length of the fluid path inside the rotor control the pressure drop and momentum transfer. In this research, analyses of rotor performance for incompressible flow are developed for different fluid profiles and fluid-path lengths. First, frictional losses in the nozzle and at the rotor-turbine interface are investigated, along with other turbine losses. These losses are then classified and modeled in terms of their relationship to head loss and shaft power loss, and investigated using MATLAB and COMSOL. As the turbine scales down, this scaled performance is evaluated and a constraint list for turbine hardware and operating parameters is derived. These results are used to optimize performance for the full range of millimeter to meter sized turbines.

Tesla turbines at the scales covered in this dissertation (mm – m) are relatively easy to manufacture. The experimental mini-turbines presented in this research have two primary components, fabricated using commercially available technologies: 1) four 1 cm-diameter rotors with variation in number of disks, interdisk spacing, and effective area, and 2) a turbine enclosure with eight nozzles of varying area, angle, and shape.

Test results from different configurations of nozzles and rotors are presented, and observations made on the performance trends of the turbine. Flow through the 1 cm rotors is also simulated in ANSYS to verify the momentum equations. The performance difference between analytical solutions, simulation, and experimental results is then studied, and a mapping of experimental results onto analytical results is proposed.

In addition, various scaling-down methodologies are investigated. Disk spacing is varied as a power function of radius, and turbine performance is analyzed across the turbine range of 1 mm to 400 mm diameter. Using this approach, constant power density designs are specified that perform at better than 35% mechanical efficiency for the entire range. As the turbine is scaled down, the roughening of the disks must be increased to control the fluid profile. Power density is very sensitive to the rotor spacing and the input head, and efficiency is very sensitive to the operating parameters and turbine design. This dissertation argues that these sensitivities explain the wide discrepancies in published turbine performances.

A practical design tool is also offered, which inputs user specifications on head, flow, particulate size, and medium to generate a list of possible turbine designs along with a recommendation for four candidate designs. The sensitivities of turbine performance to the input head and input flow variations are also reported. The tool is designed to cover 20 mW to 20 kW power range and 2 mm to 500 mm rotor radius range. Current applications and potential extensions to the research are discussed in the conclusion.

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Quiroga, Persivale Guillermo. "El porqué en la innovación: el caso Tesla." PERU ECONOMICO S.A, 2016. http://hdl.handle.net/10757/624187.

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Explica uno de los casos más representativos de innovación empresarial en el 2016. Expone la abrumadora demanda por adquirir el automóvil Tesla 3, a razón del carácter innovador con respecto a la sostenibilidad del motor del vehículo. Finalmente señala que si un producto requiere un manual para funcionar, está condenado a no ser usado, y justamente el Tesla 3 obtiene una ventaja competitiva en este aspecto.
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30

Ortlieb, Chantal. "Angiographie par résonance magnétique A O. 1 tesla." Paris 11, 1993. http://www.theses.fr/1993PA11T029.

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Van, de moortele Pierre-françois. "Irm fonctionnelle cérébrale à 3 Tesla : développements méthodologiques." Paris 11, 1999. http://www.theses.fr/1999PA11T018.

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Le cadre de ce travail est l'optimisation des protocoles d'IRM fonctionnelle cérébrale chez l'homme basés sur les propriétés paramagnétiques de la désoxyhémoglobine, sur un imageur à haut champ (3 Tesla). Cette technique expose à de nombreux obstacles méthodologiques. En particulier, les séquences Echo Planar choisies pour leur extrême rapidité d'acquisition, sont très sensibles à certains artefacts (déformations image dédoublée) et produisent un bruit acoustique intense. Ces effets sont aggravés par l'existence d'un haut champ magnétique. Nous avons proposé, validé et mis en œuvre des développements méthodologiques originaux pour corriger cerfains artefacts et améliorer les conditions de réalisation de ces études : Nous avons mis en œuvre une technique de correction des distorsions géométriques (selon P. Jezzard), que nous avons validée sur des mesures d'activation cérébrale. Pour supprimer l'image "fantôme" caractéristique des séquences Echo Planar, nous avons modifié une technique de double échantillonnage (selon Yang) pour l'Echo Planar à encodage continu, et programmé un algorithme spécifique de reconstruction. Le bruit de la séquence gênant la compréhension des stimuli verbaux, nous avons modifié des séquences, validées sur fantôme, comportant des périodes de silence pour présenter le matériel verbal aux sujets adaptées aux exigences temporelles des paradigmes "en bloc" et des paradigmes "événementiels". Nous avons développé et validé un outil pour corriger systématiquement les déphasages intercoupés dus à l'étalement dans le temps de l'échantillonnage des coupes d'un volume de cerveau, après avoir mis en évidence les biais que produisent ces déphasages. Pour appréhender les mouvements involontaires de la tête, une des principales causes d'échec dans les protocoles d'IRM fonctionnelle, nous avons démontré la faisabilité, sur fantôme et chez le volontaire, d'un système de mesure directe basé sur des marqueurs externes non protoniques
The aim of this work is to optimize functional studies of the human brain on a whole body 3 Tesla MRI scanner. A number of artifacts were to be fixed, mainly related to the Echo Planar Imaging sequence, which affords extremely fast acquisition rates, but is highly sensitive to strong artifacts (distortion, ghost image) and produces a high level of noise. These effects are even worsened at high magnetic field values. We proposed, validated and implemented sorne original methodological approaches to attenuate some artifacts and improve the quality of fMRI studies conducted in the laboratory. We have implemented a correction procedure for image distortions (from P. Jezzard) that we have validated on cerebral activation measurements. To suppress the ghost image, which is characteristic of Echo Planar Imaging, we modified a double sampling technique (from Yang), for continuous phase encoding Echo Planar Imaging, and we wrote a specifie algorithm needed for image reconstruction. To present auditory stimuli in the context of the high level of noise, we designed two modified Echo Planar sequences with the insertion of silent periods to present verbal material to the subject. One sequence is dedicated for blocked design experiments, the other for event-elated paradigms. The modified sequences were also validated in phantom studies. After having shown that sarnpling the brain slice by slice over time produced significant bias in images analysis, we have developed and implemented a correction algorithm to interpolate samples on the first slice acquisition time for each brain volume. Head motions are one of the main sources of unsuccessful fMRI studies. To measure the head position in the magnet, we demonstrate the feasibility of a method based on non proton fiducial markers, the position of which is measured by projections interleaved in the Echo Planat imaging scheme
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32

Smyrnova, K. V. "Nikola Tesla - the genius who lit the world." Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/34921.

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Nikola Tesla (1856 –1943) was a true visionary far ahead of his contemporaries in the field of scientific development. He was one of the greatest and most enigmatic scientists who played a key role in the development of electro magnetism and other scientific discoveries of his time. Accompanied by blinding flashes of light, he would often visualise mechanical and theoretical inventions spontaneously. He had a unique capacity to visualise images in his head. When working on projects, he would rarely write down plans or scale drawings, but rely on the images in his mind. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/34921
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33

Bäckman, Elias, and Mathilda Willén. "Tesla Valve for Hydrogen Decompression: Fluid Dynamic Analysis." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264524.

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Människans påverkan på växthuseffekten har under de senaste åren varit en mycket aktuell fråga. Det är många olika faktorer som bidrar till ett negativt avtryck på miljön, där ett stort bidrag kommer från sektorn bilindustri. Majoriteten av dagens bilar drivs på fossila bränslen som genererar skadande utsläpp på miljön. Att hitta nya alternativa bränslen som är förnyelsebara och energivänliga som kan ersätta de fossila skulle kunna leda till ett signifikant minskat avtryck på klimat och miljö. Att använda väte som bränsle och i synnerhet att driva fordonet på vätgas är ett av de alternativen då avgivna utsläpp endast består av vatten och varm luft, förutsatt att man använder sig av förnybar energi vid framställning av vätgasen. I bränsletanken återfinns ett högt tryck hos vätgasdrivna bilar, detta för att mer bränsle ska kunna förvaras och därmed öka antal mil möjliga att köra på en tank. Ett tryckfall är nödvändigt för att förse bränslecellen med vätgas vid rätt tryck, och för att uppnå högst möjliga verkningsgrad. Teslaventilen har inga rörliga delar vilket medför ett brett spektrum av applikationer i industriella situationer på grund av dess uthållighetsegenskaper. För att kunna kategorisera prestandan och uppnå optimal effekt krävs förståelse om ventilens geometriska uppbyggnad. Med rätt geometri på Tesla-ventilens olika strukturparametrar kan man uppnå ett högt tryckfall, med andra ord en hög prestanda. I denna studie har tre olika geometriska parametrar hos Tesla-ventilen undersökts för att kunna dra slutsatser och etablera deras optimala värden för bästa prestanda. Parametrarna som varit av intresse är innerradien på kurvan av Tesla-ventilen, avståndet mellan flera sammankopplade ventiler och tvärsnittets utformning. Resultaten erhölls genom numeriska metoder av Computational Fluid Dynamics simuleringar i programmet ANSYS Fluent. Resultat visade att en liten innerradie och ett längre avstånd mellan flera sammankopplade ventiler gav upphov till högre tryckfall. Tvärsnitten som undersöktes var rektangulärt och cirkulärt, där det cirkulära visade en bättre förmåga av att effektivt sänka trycket hos fluiden. Slutsatser som drogs var att cirkulärt tvärsnitt var att föredra och att en liten innerradie och ett stort avstånd mellan ventiler optimerar prestandan hos Tesla-ventiler.
在过去的几年里，人类对温室效应的影响一直是社会舆论中一个突出和争论的主 题。对环境造成负面影响的因素有很多，汽车便是其中之一。如今，大多数汽车依靠 化石燃料驱动，在这个过程中会造成有毒物质的排放。因此，对可再生与环境友好的 替代燃料的研究重要性愈发突出。氢，（更具体地说，氢气），由于燃烧产物只有 水，成为了一种可选的替代燃料。 在氢燃料汽车的储氢罐中，往往设置高压以提高氢气储量并增加里程数。而为了 保证燃料电池高效运行，在储氢罐和燃料电池之间必须采取减压手段，这也使高效降 压成为了氢燃料汽车研究领域中的一个长期需求。特斯拉阀在没有活动部件的情况 下，允许流体沿一个方向流动，并限制其往相反方向流动。该概念在工业环境中具备 广泛的应用潜力，而理解特斯拉阀（的工作机理）对于表征设备性能非常重要。采用 最优几何形状的特斯拉阀，可以实现高压降，换言之高性能。 本研究对特斯拉阀的三种结构参数进行了调查，得出了使特斯拉阀降压性能达到 最优时的参数值。所研究的三种参数分别是内部曲线半径，多级特斯拉阀中的阀间距 以及阀门的横截面。为了获得结果，使用计算流体动力学软件 ANSYS Fluent 进行了数 值模拟。结果表明，与较大的半径相比，较小的内部曲线半径产生更高的压降。随着 多级特斯拉阀的阀间距增大，阀门降压性能提高。对横截面的研究中，比较了矩形截 面和圆形截面的特斯拉阀的降压性能，发现圆形截面的特斯拉阀降压性能更优。本研 究的最终结论是（在特斯拉阀设计中采用）圆形横截面，小的内部曲线半径和大的阀 间距可以提高装置性能。
The last couple of years, the footprint of humankind on the greenhouse effect has been a highlighted and debated topic. There are many contributing factors to the negative impacts on the environment, one of them being the sector of automobile. Today, most cars are driven on fossil fuel energy which produces toxic emissions. The search for replaceable alternative fuels is hence of importance and keys of demands are renewable energy and energy-friendly resources. Hydrogen as a fuel, in particular the hydrogen gas, is one of the options considering the only residues to be water and hot air, provided that the energy used in the hydrogen production comes from renewable sources. In the storage tank of cars fueled by hydrogen gas, a high pressure is set due to its advantages of opportunities of more storage and thus increased mileage of the tank. A decompression process is necessary to supply the fuel cell with hydrogen gas at the right pressure, and thus achieve highest possible degree of efficiency. The concept offers a wide set of application opportunities in industrial situations and understanding the valve is important for characterizing the performance on the device. Given correct and optimal geometry on the Tesla valve, a high pressure-drop could be achieved, in other words a high performance. In this study three geometric parameters were investigated in order to conclude their ideal value for optimizing the performance. The parameters of interest were the inner curve radius, the valveto-valve distance in a multi-stage Tesla valve and the cross-section of the valve. In order to obtain the results, a numerical study was conducted using simulations in a Computational Fluid Dynamics program, ANSYS Fluent. The results denoted that a small inner curve radius yielded the highest pressure-drop when comparing to larger radius’. The performance was enhanced with a large valveto-valve distance of the multi-stage Tesla valves and the findings of the cross-sections, which were chosen to be rectangular and circular of interest, displayed a superior performance for the circular cross-sections. Conclusions were drawn that circular cross-section is to prefer and that a small inner curve radius and large valve-to-valve distance yield an enhanced performance of the device.
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34

Pavan, Mattia <1985&gt. "Gestire i driver dell'innovazione: il caso Tesla Motors." Master's Degree Thesis, Università Ca' Foscari Venezia, 2012. http://hdl.handle.net/10579/1619.

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Il presente lavoro si pone come obiettivo quello di individuare le linee guida per la costruzione di un nuovo approccio all’analisi dell’innovazione, resosi necessario a causa del superamento degli approcci technology-push e market-pull. Partendo da diverse considerazioni teoriche, corredate da esempi concreti, si propone l’analisi dell’innovazione in un’ottica sistemica, delineando le diverse componenti del sistema innovativo e spiegandone il funzionamento. Si tratta quindi dei concetti di conoscenza, di valore e di driver, che sono le dimensioni critiche che l’impresa deve presidiare e gestire per favorire i processi innovativi. I driver individuati ed analizzati sono la tecnologia, il mercato ed i significati. Essi agiscono in modo interdipendente contribuendo ad aumentare il valore offerto dall’impresa ai consumatori. Sarà anche sottolineata l’importanza della comunicazione e dei modelli di ricavo che permettono la remunerazione dell’innovazione, garantendo nuove risorse all’impresa necessarie per alimentare i processi innovativi. Infine verrà preso in esame il caso di Tesla Motors Inc., azienda Californiana produttrice di auto elettriche, in quanto si ritiene interessante analizzare l’applicazione dell’approccio proposto, in un caso imprenditoriale concreto.
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35

Iembo, Ludovico <1992&gt. "IDEATING AND INTRODUCING NEW INNOVATIONS : TESLA IN ITALY." Master's Degree Thesis, Università Ca' Foscari Venezia, 2016. http://hdl.handle.net/10579/8782.

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36

Bloch, Frédéric. "SOURCE DE CHAMP INTENSE 4 Tesla À AIMANTS PERMANENTS." Phd thesis, Grenoble INPG, 1999. http://tel.archives-ouvertes.fr/tel-00763901.

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Le but de cette étude est de développer et optimiser une source originale de champ magnétique intense à base d'aimants permanents. L'aspect novateur de ce projet est l'utilisation des matériaux magnétiques aux terres rares, à très forte anisotropie, pour générer des champs de l'ordre de 4 à 5 Tesla. Des champs de cet ordre de grandeur sont requis dans certaines applications et expériences scientifiques. De tels champs intenses peuvent théoriquement être atteints avec des configurations d'aimantations non colinéaires. Ce concept a permis depuis dix ans environ de développer des sources de champs très homogènes, inférieurs à 2 Tesla. Notre objectif est différent: il s'agit de générer le champ le plus intense possible dans un volume de quelques mm3 sans souci d'homogénéité. Les configurations particulières d'aimants ainsi que la discrétisation de la structure sont optimisées par modélisation et simulation numériques à partir des caractéristiques magnétiques des divers matériaux disponibles commercialement. FLUX 2D et FLUX3D Logiciel de simulation numérique éléments finis. FORCE 3D Logiciel de simulation analytiques des systèmes à aimants. Ces logiciels ont été développés au LEG. La conception de la structure tient compte des applications envisagées (champ statique variable, accès au champ). Le modèle actuel fournit un champ supérieur à 4,5 T dans un volume de quelques mm3, pour un encombrement extérieur d'environ 0150 mm. Il combine astucieusement plusieurs types nuances d'aimant à base de terres rares Néodyme-Fer-Bore pour sa haute rémanence, ainsi que pour sa forte anisotropie, ainsi qu'une utilisation de pièces polaires en Fer-Cobalt. C'est la coercivité des aimants qui limite le champ maximum productible par ces stuctures.
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37

Horn, Julian Patrick [Verfasser]. "Dynamische Kontrastmittel-Magnetresonanzurographie bei 3 Tesla / Julian Patrick Horn." Ulm : Universität Ulm, 2019. http://d-nb.info/1175526789/34.

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Tan, Francisca Marie. "Interpretation of BOLD events using fMRI at 7 Tesla." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/39051/.

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Functional Magnetic Resonance Imaging (MRI) acquired at ultra‐high magnetic field (7 Tesla) provides increased blood oxygen level dependent (BOLD) sensitivity and contrast‐to‐noise ratio. Sparse Paradigm Free Mapping (SPFM) is an fMRI data analysis method recently developed to detect sparse events related to brain activity without prior timing information. This thesis designs and validates methods that interpret BOLD events detected using SPFM at 7 Tesla. Firstly, this thesis validates the use of temporal Independent Component Analysis to decompose SPFM outputs into temporally‐independent BOLD events with spatially overlapping activation maps using a task‐based paradigm. Activation maps of these components can then be used for decoding purposes. This thesis also proposes a method to decode BOLD events by relating their spatial activation maps to a meta‐analysis of previous fMRI studies. A decoding score was derived to relate SPFM outputs to Activation Likelihood Estimation (ALE), which is a coordinate‐based meta‐analysis method. The proposed method was validated against motor task paradigms to decode task‐based and spontaneous motor events in the Sensorimotor Network (SMN). Finally, to investigate the Default Mode Network (DMN), which is a cognitive resting‐state network that has overlapping functions, DMN BOLD events during motor tasks and resting‐state events were investigated. It is shown that there is a small percentage signal change that is close to baseline in DMN nodes when spontaneous events occur in the SMN. In addition, the Precuneus/Post‐Cingulate Cortex (pC/PCC) also co‐activated with the nodes of Dorsal Attention Network (DAN) and Supplementary Motor Area (SMA), further supporting the theory of the DMN being functionally heterogeneous and suggesting a dynamic role of pC/PCC as a functional hub.
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Brenis, Oliva Liliana Karina, Osterling Alvaro Javier Mavila, and Pereira Priscila Moreno. "Plan estratégico para Tesla en el período 2019-2021." Master's thesis, Universidad del Pacífico, 2019. http://hdl.handle.net/11354/2524.

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Tesla Motors es una empresa norteamericana fundada en 2003 por un grupo de ingenieros de Silicon Valley, California. Luego se les unió Elon Musk como cofundador, quien en la actualidad es director ejecutivo y uno de los principales accionistas de la compañía, con una participación cercana al 20% (Bloomberg s.f.). Tesla busca acelerar la transición del mundo a la energía sostenible. Para ello, como parte de su filosofía, en 2014 liberó sus más de 200 patentes, poniéndolas a disposición por medio del modelo Open Source (código abierto), con el fin de facilitar el impulso del vehículo eléctrico. Desde su fundación se han incorporado ya cinco modelos ligeros totalmente eléctricos, tales como: Modelo Roadster, S, X, 3 e Y, con cero consumo de combustibles fósiles y cero emisiones directas a la atmósfera. Todos sus vehículos son vendidos de manera directa, sin usar intermediarios, característica que forma parte fundamental de su modelo de negocios.
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40

Rolečková, Zuzana. "Aplikace metod komplexního hodnocení podniků na akciovou společnost Tesla." Master's thesis, Vysoká škola ekonomická v Praze, 2006. http://www.nusl.cz/ntk/nusl-657.

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Práce aplikuje na akciovou společnost Tesla metody komplexního hodnocení podniků. Jedná se zejména o bonitní a bankrotní indikátory jako jsou IN indexy, Altmanovo Z skóre, Tafflerův index, Tamariho rizikový index, Index bonity; dále práce obsahuje Pollakovu metodu stanovení vitality podniku, metodu Quelle a analýzu finanční důvěryhodnosti společnosti podle návodu R. Grünwalda. Cílem práce je nejen ohodnotit finanční zdraví společnosti Tesla, ale také analyzovat jednotlivé použité metody.
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41

Nieto-Chaupis, Huber. "Study of scalar leptons at the TESLA photon collider." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15831.

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Zusammenfassung: In dieser Arbeit wird die Möglichkeit untersucht, am e+e- und am gamma-gamma Collider mittels einer Monte Carlo Methode supersymmetrische Signaturen zu entdecken. Im Wesentlichen wurde sich auf den Nachweis von Myonen konzentriert. Zuerst wird der Nachweis von R-Smyonen in e+e- Kollisionen untersucht, der die Grundlage zur Bestimmung der R-Smyonen Masse ist. Es stellte sich heraus, dass eine statistische Unsicherheit von 0.11 GeV erreicht werden kann. Unter Annahme der Realbedingungen am ILC Photon Collider wurde eine Studie durchgeführt, die den Nachweis von R-Smyonen und L-Smyonen Paaren bei Schwerpunktsenergien von energie e-e- = 0.5 und 0.6 TeV beinhalted. Die Simulation ergab, dass ein statistischer Fehler für die Verzweigungsverhältnisse L-Smyonen -> Myonen + Neutralino1 von 0.98% und L-Smyonen -> Myonen + Neutralino2 von 3.97% erreicht werden kann. Um die Monte Carlo Ergebnisse beurteilen zu können, wurde eine Methode benutzt, die auf einem multidimensionalen Fit basiert, um den Einfluss der Messungen der Verzweigungsverhältnisse auf die Genauigkeit der SUSY Parameter abzuschätzen. Weiterhin wird die Möglichkeit untersucht, schwere Neutralinos wie Neutralino2 über den Nachweis von Myonen+ Myonen- Neutralino1 Myonen+ Myonen- Neutralino1 und e+ Myonen- Neutralino1 e- Myonen+ Neutralino1. Endzuständen, produziert in gamma-gamma Kollisionen, zu identifizieren. Diese Studie verdeutlicht, dass der Photon Collider, im Gegensatz zu Lepton Collidern, eine aussergewöhnliche Datenmenge für diese Topologie bieten wird. Es stellte sich heraus, dass die aus den Energieverteilungen der Leptonen im Endzustand gewonnene Information ausreicht, um das supersymmetrische Signal zu identifizieren. Aus den Streudiagrammen der invarianten Masse wurde die Massendifferenz der supersymmetrischen Teilchen in den Kaskaden bestimmt. Es wird gezeigt, dass die Neutralino2 Masse und die Massendifferenzen Masse(Neutralino2)- Masse(Neutralino1) und Masse(L-Smyonen) - Masse(R-Smyonen) gut abgeschätzt werden können. Weitere potentielle Quellen der innnewohnenden systematischen Fehler werden diskutiert.
Abstract: In this thesis, the potential to discover supersymmetric signatures in both e+e- and gamma-gamma colliders evaluated with a Monte Carlo analysis, is discussed. The analysis was focused on the detection of muons, essentially. First, we study the detection of R-smuons in e-e+ collisions, whose purpose is the measurement of the smuon mass. It was found that an uncertainty of 0.11 GeV (stat) can be achieved. Under the assumption of the real conditions of the ILC photon collider, a study covering the detection of R-smuons and L-smuons pairs for a center-of-mass energy of e-e- = 0.5 and 0.6 TeV was performed. According to the simulation, a statistical error for the branching ratios of L-smuon -> muon neutralino1 of 0.98% and L-smuon -> muon + neutralino2 of 3.97% can be reached. In order to judge the Monte Carlo results, we have used a technique based on a multidimensional fit to evaluate the impact of the branching ratio measurements on the precision of the SUSY parameters. Furthermore, the possibility of identifying heavy neutralinos such as neutralino2 via detection of the muon+ muon- neutralino1 muon+ muon- neutralino1 and muon- e+ neutralino1 muon+ e- neutralino1 final states produced in gamma-gamma collisions, was explored. This study reveals that the photon collider will provide a remarkable amount of data for this topology, contrary to lepton colliders. Information acquired from energy distributions of final state leptons turns out to be enough to identify the supersymmetric signal. From the invariant mass scatter plots the mass difference of the supersymmetric particles involved in the cascades is determined. It is shown that the neutralino2 mass and the mass difference between neutralino2 and neutralino1 and L-smuon and R-smuon can be quite well estimated. Further potential sources of inherent systematic errors, are discussed.
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42

Donadieu, Maxime. "Spectroscopie par résonance magnétique à haut (3 Tesla) et très haut champ (7 Tesla) : développements méthodologiques et applications à la sclérose en plaques." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0651/document.

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La spectroscopie par résonance magnétique permet de manière non invasive, de caractériser et suivre l'évolution du métabolisme cérébral in vivo chez l’Homme. Néanmoins, de nombreux biais empêchent l’obtention d’une caractérisation métabolique cérébrale complète, un prérequis essentiel pour mieux comprendre une pathologie diffuse comme la Sclérose en Plaques (SEP).Mon premier projet a donc consisté à transposer une technique de spectroscopie rapide en 3 dimensions, acquise dans deux orientations spatiales. Cette comparaison a mis en évidence des diminutions de métabolites reliés à la viabilité et à l’activité neuronale, dans des régions fonctionnelles motrices et cognitives, mais également une activité gliale accrue dans les lésions de substance blanche mais aussi en dehors. La deuxième étude a visée à caractériser d'un point de vue métabolique, les accumulations cérébrales de sodium observées chez les patients atteints de SEP par IRM du 23Na. Nous avons pu mettre en évidence des corrélations significatives entre les accumulations de sodium et les diminutions de NAA mettant en lumière un lien fort entre ces accumulations et les phénomènes de souffrance neuronale.Enfin, le dernier projet a eu pour but d'améliorer la résolution spatiale de l'imagerie spectroscopique du proton en tirant partie des avantages d'un imageur clinique 7 Tesla. Après avoir corrigé différents problèmes comme les inhomogénéités B0 et B1 ainsi que l’artefact de déplacement chimique, nous avons obtenu le profil du NAA, de la Choline et de la Créatine pour 4 gros noyaux thalamiques. De plus, l’analyse statistique a mis en évidence des différences métabolique entre les noyaux Thalamiques
Magnetic Resonance Spectroscopy (MRS) allows to characterize, in vivo and non-invasively, the cerebral metabolism in Human. Nevertheless, use MRS in clinical routine is marginal and it is impossible to obtain whole brain metabolic topography, mandatory step in order to understand diffuse pathology like Multiple Sclerosis (MS).First of all, we aimed to transpose a fast 3D-MRSI sequence acquired in two different orientations. We observed significant decrease in metabolites linked with neuronal health and activity, in important motor and cognitive areas, and also increase in glial activation, inside white matter T2 lesions but also outside in normal appearing white and grey matter.Secondly, we aimed to characterize the metabolic counterpart of cerebral sodium accumulations observed, using 23Na MRI, in MS patients. We observed significant correlations between sodium accumulations and decrease in NAA highlighting a strong link between sodium accumulations and neuronal suffering.Finally, we attempted to improve spatial resolution of proton MR spectroscopy using 7 Tesla scanner. We also addressed ultra-high field artifacts like B0 and B1 inhomogeneities as well as chemical shift displacement error. We obtained metabolic profiles of NAA, Choline and Creatine for 4 big thalamic nuclei. Moreover, statistical analysis evidencing metabolic differences between nuclei in same hemisphere but also for some nuclei left/right differences
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Hermann, Kay-Geert Armin [Verfasser]. "MRT-Diagnostik rheumatischer Erkrankungen der Extremitätengelenke : klinischer Stellenwert und Vergleich von konventioneller (1,5 Tesla) mit Niederfeld (0,2 Tesla) MRT / Kay-Geert Armin Hermann." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2010. http://d-nb.info/102405487X/34.

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44

Erskine, Matthew K. "Resolution-dependent estimates of multiple sclerosis lesion loads, evaluation of magnetic resonance imaging of the brain at 4 tesla versus 0.5 and 1.5 tesla." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq30788.pdf.

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45

Karamitsios, Achilleas. "Open Innovation in EVs: A Case Study of Tesla Motors." Thesis, KTH, Entreprenörskap och Innovation, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-124518.

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This study examines the topic of open innovation in EVs. Initially a brief description of the concept of innovation and open innovation is carried out. Moreover, the three processes of open innovation are deployed while the coupled process is described in more detail. Furthermore, a short description is also given for corporate entrepreneurship, alliances, and the U.S. government policy. Also, this report considers Tesla Motors’ partnerships as a case study and it aims to give an insight of how the coupled process of open innovation is. Concluding, Tesla Motors follows the coupled innovation process by establishing strategic partnerships.
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46

Al-Radaideh, Ali Mohammad Ibrahim. "High resolution quantitative imaging of multiple sclerosis at 7 Tesla." Thesis, University of Nottingham, 2010. http://etheses.nottingham.ac.uk/1687/.

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This thesis investigates the normal appearing brain tissue in multiple sclerosis (MS) using high resolution quantitative MRI measures acquired at high magnetic field. The use of magnetisation transfer ratio (MTR) and longitudinal time (T1) were employed to investigate changes in normal appearing white matter (NAWM) for healthy control subjects and patients with clinically isolated syndromes suggestive of MS (CIS) and relapsing-remitting multiple sclerosis (RRMS). The results showed a significant difference in the median peak position, full width at half maximum, the 25th percentile of the MTR histograms and the 75th of the T1 histograms. The magnetic susceptibility mapping technique was used to quantitatively investigate the accumulation of iron in deep grey matter structures in healthy controls, CIS and RRMS patients. The results showed an increase in iron deposition in the caudate nucleus, putamen, globus pallidus structure in CIS and RRMS when compared to those in healthy controls. Combining functional MRI and magnetic susceptibility mapping was used to elucidate the mechanisms underlying the visual activation in lateral geniculate nucleus (LGN) in healthy controls. The results showed an increase in the accuracy of the LGN delineation. This is in turn, highlights the importance of this method in quantifying the visual disturbances associated with MS and CIS patients.
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47

Stark, Joseph C. (Joseph Charles) 1980. "Wireless power transmission utilizing a phased array of Tesla coils." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/18036.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.
Includes bibliographical references (p. 245-247).
This thesis discusses the theory and design of coupled resonant systems and how they can be linked in a phased array for the wireless transmission of electrical power. A detailed derivation of their operational theory is presented with a strong emphasis on the current and voltage waveforms produced. Formulas are presented relating the features of the waveforms to specific parameters of the system. They provide a theoretical basis for the design of the TeslaE coil systems. Unloaded and loaded operating efficiency is considered from both a power and energy perspective with emphasis on maximizing the two quantities. With these design formulas, a working set of two distinct coupled resonant systems were locked in frequency and controllable in phase to produce a phased array capable of wireless power transmission. The operational details and practical design considerations are presented and explained. The measured output waveforms were found to closely agree with the predicted models.
by Joseph C. Stark, III.
M.Eng.
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48

Suwannarath, Songluk. "The TESLA-alpha broadcast authentication protocol for building automation system." Thesis, California State University, Long Beach, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10111196.

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Wireless sensor networks experience an increase of attacks in networks in term of security. However, broadcast communication is an essential algorithm that provides a great benefit for large scale communications, especially in Building Automation System (BAS). Embedding the security in this area becomes the top priority for every industry. TESLA protocol is an algorithm that verifies and authenticates senders and has low overhead and a robust authentication mechanism. The appeal of TESLA motivates us to apply this protocol into a hierarchical wireless network architecture for BAS that has a high flexibility for formation networks. To combine these two architectures we implement the knowledge of zero knowledge protocol and a session key cryptography into the formation phase, and modify packets that were used in this phase to make TESLA-alpha protocol compatible with BAS.

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Konoplyanchenko, A. E. "Nikola Tesla a man who was ahead of his time." Thesis, Sumy State University, 2014. http://essuir.sumdu.edu.ua/handle/123456789/45612.

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Nikola Tesla (1856-1943) is a Serbian-American scientist, inventor, and electro and mechanical engineer who provided mankind with a large number of discoveries and inventions. Tesla is most famous for conceiving the rotating magnetic field principle and then using it to invent the induction motor together with the accompanying alternating current long-distance long-electrical transmission system. His patents and theoretical work still form the basis for modern alternating current electric power (AC) systems including the polyphase power distribution system.
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50

Oelers, Charlotte [Verfasser], Lars [Gutachter] Schimmöller, and Christian [Gutachter] Arsov. "Prospektiver Vergleich von Prostatauntersuchungen im 1,5-Tesla-MRT und 3-Tesla-MRT hinsichtlich der Bildqualität und diagnostischen Genauigkeit / Charlotte Oelers ; Gutachter: Lars Schimmöller, Christian Arsov." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2020. http://d-nb.info/1217062335/34.

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