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Dissertations / Theses on the topic 'Q-bit'

Author: Grafiati

Published: 10 March 2023

Last updated: 31 July 2025

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1

Pimentel, Sobrinho Alvaro Caetano. "A contribuição do conceito do bit quântico(q-bit) para os fundamentos teóricos da ciência da informação." Universidade Federal do Rio de Janeiro / Instituto Brasileiro de Informação em Ciência e Tecnologia, 2013. http://ridi.ibict.br/handle/123456789/670.

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Made available in DSpace on 2015-10-19T11:49:43Z (GMT). No. of bitstreams: 1 pimentelsobrinho2013.pdf: 2616020 bytes, checksum: abbcfacc53dbab0dc8ddca2f8ac2b67b (MD5) Previous issue date: 2013-03-27<br>Study about contributions of the concept of quantum bit (q-bit) and analyze the possibilities in quantum computers processing and increase the data storage capacity for devices memory. From the analysis of the q-bit is possible to notice changing in mental and social structures beyond their direct interference in the process of memory as a way of preserving information in different formats. Ob

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2

Healey, Joanne E. "Experiments to develop High Q and tunable superconducting coplanar resonators applicable for quantum bit technology." Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/1077/.

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Measurements are made on superconducting Niobium on Sapphire and oxidized Silicon microwave coplanar resonators for quantum bit experiments. Device geometry and materials are investigated and quality factors in excess of a million have been observed. The resonant frequency as a function of temperature of a coplanar resonator is characterised in terms of the change in the number density of superconducting electrons. At lower temperatures, the resonant frequency no longer follows this function, and evidence is shown that this is associated with the resonant coupling of the resonant frequency wit

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3

Raimondo, Gianluca. "Particle mixing, two level systems and gauge theory." Doctoral thesis, Universita degli studi di Salerno, 2012. http://hdl.handle.net/10556/1304.

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2010 - 2011<br>In this thesis I will discuss the theory of two level systems and the theory of the oscillating particles in quantum eld theory. In the rst chapter I will consider the time evolution of a two level system, a qubit, to show that it has inside a local in time gauge invariant evolution equation. I construct the covariant derivative operator and show that it is related to the free energy. The gauge invariance of the time evolution of the two level system is analogous to the phenomenon of birefringence.I also show that the two level systems present a Berry-like and an Ananda

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4

Neto, Domingos Soares. "Filtros para a busca e extração de padrões aproximados em cadeias biológicas." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-19102009-002745/.

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Esta dissertação de mestrado aborda formulações computacionais e algoritmos para a busca e extração de padrões em cadeias biológicas. Em particular, o presente texto concentra-se nos dois problemas a seguir, considerando-os sob as distâncias de Hamming e Levenshtein: a) como determinar os locais nos quais um dado padrão ocorre de modo aproximado em uma cadeia fornecida; b) como extrair padrões que ocorram de modo aproximado em um número significativo de cadeias de um conjunto fornecido. O primeiro problema, para o qual já existem diversos algoritmos polinomiais, tem recebido muita atenção desd

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5

Peloušek, Tomáš. "Simulace zkreslení zvukového signálu v percepčním zvukovém kodéru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442567.

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This thesis deals with the issue of the creation of a programme that would simulate the distortion that appears during the process of lossy audio coding. As the environment for the creation, the MATLAB programming language has been chosen. An encoder, which changes the subjective signal quality according to customer preferences for the bitrate, has been created as a practical part of this thesis. Its function is based on a dynamic bit allocation technique and includes an optional window switching algorithm. The theoretical background for the creation of the programme consists of an explanation

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6

Wang, Hanlin. "The Economic Phenomena of Net Games and of Bit Coins in China." Master's thesis, Vysoká škola ekonomická v Praze, 2013. http://www.nusl.cz/ntk/nusl-193137.

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This paper mainly deals with a special but highly-developing industry in China, net game industry. Due to the significant construction and improvement have been happening at China since 30 years ago, and the influence of traditional culture, population boom or demographic dividend and the invasion of western technologies and cultures, net game industry, which has been only existing for less than 15 years at China, has become one of most profitable industries and changed the living of millions of people. The goal of this essay is to explore the economic performance of networks during last dozen

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7

Lundin, Carl. "Rapid transit and property values." Thesis, KTH, Fastigheter och byggande, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146890.

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I denna uppsats görs en fördjupning utbyggnaden av Stockholms tunnelbana till Nacka kommun. Syftet med uppsatsen har varit att undersöka huruvida det uppstår förändringar i fastigheters värde i nära och direkt anslutning till ny- eller utbyggd tunnelbana. Teorikapitlet behandlar olika teorier som beskriver varför vissa typer av fastigheter och verksamheter uppstår på vissa ställen. Teorin tar sats ur von Thünens sätt att förklara markanvändning. Uppsatsen går igenom hur betalningsviljan för mark dels skiljer sig mellan olika verksamheter och dels hur den avtar med avståndet från Central Busine

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8

Amsanpally, Abhilash. "Linear properties of inhibited coupling hollow-core photonic crystal fibers." Thesis, Limoges, 2017. http://www.theses.fr/2017LIMO0028/document.

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Cette thèse a porté sur les principes de guidage, les propriétés linéaires et les outils de conception autour des fibres à cristal photonique à coeur creux (HC-PCF) à couplage inhibé (IC). Le guidage IC a été démontré comme une manifestation photonique de Q-BiC (état quasi lié dans un continuum) en étudiant des profils asymétriques et dépendants en polarisation dit Fano présentant une bande passante spectrale de 30 GHz. En utilisant le concept de IC, nous reportons la caractérisation linéaire de fibres IC HC-PCF supérieures à l’état de l’art. Par une optimisation de la forme du coeur, une fibr

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9

Fluckinger, Chris D. "Measurement of Big Five Personality via Q-Sort: Comparison with a Likert Measure and Test-Taker Perceptions and Reactions." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1279038683.

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10

Albuquerque, Rosângela Marques de. "Obtenção de portas lógicas quânticas em condensados de bose-einstein." reponame:Repositório Institucional da UFC, 2017. http://www.repositorio.ufc.br/handle/riufc/27051.

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ALBUQUERQUE, R. M. Obtenção de portas lógicas quânticas em condensados de bose - Einstein. 2017. 77 f. Dissertação (Mestrado em Engenharia Elétrica e da Computação) - Campus de Sobral, Universidade Federal do Ceará, Sobral, 2017.<br>Submitted by Programa de Pós-Graduação Engenharia Elétrica e de Computação (secretaria_ppgeec@sobral.ufc.br) on 2017-10-31T21:38:15Z No. of bitstreams: 1 2016_dis_rmdealbuquerque.pdf: 2544760 bytes, checksum: f4f3c8e0b7dd85d6b593e5bfc7b367eb (MD5)<br>Approved for entry into archive by Djeanne Costa (djeannecosta@gmail.com) on 2017-11-01T12:09:26Z (GMT) No. of bits

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11

Brasil, Carlos Alexandre. "Tomografia de estados quânticos em sistemas de 3 q-bits: uma ferramenta da ressonância magnética nuclear para aplicações em computação quântica." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-01042008-145626/.

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Este trabalho consiste na análise de um método de reconstrução/tomografia de estado quântico em ressonância magnética nuclear utilizando pulsos de radiofreqüência não-seletivos, que possuem a propriedade de promover rotações globais do sistema de spins 7/2. Tal método foi aplicado para reconstruir estados relacionados à computação quântica. As operações lógicas e os estados iniciais envolvidos nas operações quânticas foram construídos através de pulsos modulados optimizados numericamente; o processo de optimização, em particular, não foi tratado nesse trabalho. Foram elaborados programas que s

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12

Jonsson, Emma, and Marja-Lena Nieminen. "Killar och tjejers faktorstruktur i personlighetsformuläret Pers Q." Thesis, Örebro University, Department of Behavioural, Social and Legal Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-590.

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<p>Syftet med studien är att undersöka om det nya personlighetsformuläret Pers Q fungerar på ungdomar samt studera eventuella könsskillnader i personlighet. Vidare undersöks om bakgrundsvariablerna årskurs, syskonplacering, sociokulturell bakgrund samt självuppskattad skolprestation har samband med personligheten. Studien är ett led i utprövningen av Pers Q som mäter verifierade personlighetsfaktorer med validitet för arbetskriterier. Respondenterna består av 138 killar och 233 tjejer från gymnasiet (n=371). En explorativ principalkomponentanalys verifierade en tidigare faktorstruktur med sju

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13

Wikby, Pierre, and Ragnar Andersson. "Strukturgeologisk karaktärisering av Getåravinen : En visualisering av lineamentsstudie med prediktioner och modellering inför Ostlänken." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-230782.

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Ostlänken är en planerad höghastighetsjärnväg mellan Järna och Linköping med stegvis byggstart från 2017, ett omfattande projekt som inkluderar totalt cirka 20 kilometer tunnel, varav en tunnel planeras att korsa Getåravinen. Undermarksbyggande är komplicerat och kontakt med svaghetszoner i berg innebär ökade risker för anläggning, miljö och omgivande fastigheter. För att åstadkomma en riskbedömning, dimensionering och ekonomisk kalkyl utförs undersökningar och ingenjörsgeologiska prognoser av bergkvalité och geologisk struktur. Studier har visat ett samband mellan naturliga lineament och svag

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14

Carlesi, Lorenzo. "Socio-Economic Analysis of Mediterranean Deep-Sea Ecosystem Goods and Services." Doctoral thesis, Università Politecnica delle Marche, 2016. http://hdl.handle.net/11566/243090.

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Il mare profondo rappresenta l’ambiente più grande del nostro pianeta, ma anche il meno esplorato. A causa dei cambiamenti climatici e dei crescenti impatti antropici, l’esistenza dei beni e servizi che questo ambiente fornisce è a rischio. Stime monetarie di tali benefici sono carenti. Elevata è la biodiversità che il mare profondo e, più in generale, gli oceani ospitano. Dalla letteratura emerge una grande variabilità della disponibilità a pagare (DAP) delle persone per la tutela della biodiversità marina. L’area geografica, le specie investigate e l’ammontare dei costi sono le variabili che

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15

Urbani, Andrea. "Mechanisms of induction and propagation of cortical spreading depression in mouse brain slices." Doctoral thesis, Università degli studi di Padova, 2012. http://hdl.handle.net/11577/3422971.

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Migraine is a common and highly disabling neurological disorder that affect more than 10% of the general population; in 30% of the migraneours migraine headache is preceded by transient neurological symptoms referred as “migraine aura”. Familial Hemiplegic Migraine type 1 (FHM1) is a rare and very severe autosomal dominant subtype of migraine with aura (MA), that is considered a good model for studying migraine: FHM1 typical attacks resemble general MA attacks, but aura symptoms include also motor weakness or paralysis, often but not always unilateral. FHM1 is caused by mutations in the CACNA1

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16

Agyo, Sanfo David. "Bi-fractional transforms in phase space." Thesis, University of Bradford, 2016. http://hdl.handle.net/10454/14522.

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The displacement operator is related to the displaced parity operator through a two dimensional Fourier transform. Both operators are important operators in phase space and the trace of both with respect to the density operator gives the Wigner functions (displaced parity operator) and Weyl functions (displacement operator). The generalisation of the parity-displacement operator relationship considered here is called the bi-fractional displacement operator, O(α, β; θα, θβ). Additionally, the bi-fractional displacement operators lead to the novel concept of bi-fractional coherent states. The ge

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17

Agyo, Sanfo D. "Bi-fractional transforms in phase space." Thesis, University of Bradford, 2016. http://hdl.handle.net/10454/14522.

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The displacement operator is related to the displaced parity operator through a two dimensional Fourier transform. Both operators are important operators in phase space and the trace of both with respect to the density operator gives the Wigner functions (displaced parity operator) and Weyl functions (displacement operator). The generalisation of the parity-displacement operator relationship considered here is called the bi-fractional displacement operator, O(α, β; θα, θβ). Additionally, the bi-fractional displacement operators lead to the novel concept of bi-fractional coherent states.

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18

Sabra, Mostafa. "Développement de lasers à fibres thulium bi-fréquences à impulsions synchrones pour la réalisation de sources Térahertz." Thesis, Limoges, 2019. http://www.theses.fr/2019LIMO0118.

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Dans le cadre d’un projet collaboratif entre le laboratoire XLIM (UMR 7252 du CNRS et de l'Université de Limoges) et le laboratoire de recherche IPHT situé à Jena en Allemagne, mon projet de thèse consiste à développer un laser à fibre dopée thulium bi-fréquences largement accordable à impulsions synchrones pour la réalisation d’une source Térahertz puissante et accordable. Basé sur l’utilisation de deux réseaux de Bragg en volume (VBGs) et d’une fibre dopée thulium à double gaine et à maintien de polarisation (diamètre de coeur = 20 μm) fabriquée par la méthode REPUSIL, un laser mono-fréquenc

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19

Cheng, Tsai-Wen, and 鄭採文. "A Low-power High-speed 8-bit Pipelining CLA Design Using Dual Threshold Voltage Domino Logic and Low-cost Digital I/Q Separator for DVB-T." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/15732239599200597417.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>94<br>This thesis includes two topics. One is a low-power high-speed 8-bit pipelining CLA design using dual threshold voltage (dual- Vth) domino logic. The other is a low-cost digital I/Q separator for DVB-T receivers. A high speed and low power 8-bit CLA using dual- Vth domino logic blocks arranged in a PLA-like style with pipelining is presented. According to parallely precharge and sequentially evaluate in a cascaded set of domino logic blocks, transistors in the precharge part and the evaluation part of dual- Vth domino logic are, respectively, replaced by h

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20

Klöckl, Ingo [Verfasser]. "Messung von Qβ-Werten [Q-beta-Werten] neutronenreicher Tc- bis Pd-Isotope im Massenbereich A=110 bis A=117 / Ingo Klöckl". 2008. http://d-nb.info/990694798/34.

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21

"Built-in-Self Test of Transmitter I/Q Mismatch and Nonlinearities Using Self-Mixing Envelope Detector." Master's thesis, 2012. http://hdl.handle.net/2286/R.I.15094.

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abstract: Built-in-Self-Test (BiST) for transmitters is a desirable choice since it eliminates the reliance on expensive instrumentation to do RF signal analysis. Existing on-chip resources, such as power or envelope detectors, or small additional circuitry can be used for BiST purposes. However, due to limited bandwidth, measurement of complex specifications, such as IQ imbalance, is challenging. In this work, a BiST technique to compute transmitter IQ imbalances using measurements out of a self-mixing envelope detector is proposed. Both the linear and non linear parameters of the RF transmit

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