Thesis (Ph.D.)--Miami University, Dept. of Psychology, 2005. / Title from second page of PDF document. Document formatted into pages; contains [2], vi, 72, [22] p. : ill. Includes bibliographical references (p. 35-37).

Στη γραμμική εκδοχή της γενικής θεωρίας της σχετικότητας, θεωρεί κανείς τις διαταραχές κάποιας μετρικής γύρω από κάποιο χωροχρονικό υπόβαθρο. Κρατώντας όρους διαταραχών μέχρι και πρώτης τάξεως, οδηγείται κανείς στις γραμμικές εξισώσεις Einstein. Σε αυτό το πλαίσιο αποδεικνύεται μια σχέση δυισμού ανάμεσα στα διάφορα στοιχεία του τανυστή Weyl, αντίστοιχη με το δυισμό ανάμεσα στην ηλεκτρική και τη μαγνητική ροή της ηλεκτρομαγνητικής θεωρίας του Maxwell. Στην εργασία αυτή κάνουμε μία ανασκόπηση της έρευνας που έχει γίνει μέχρι τώρα αναφορικά με αυτές τις σχέσεις δυισμού. Πιο συγκεκριμένα, εξετάζουμε την ισχύ των σχέσεων στον Anti-de Sitter χωρόχρονο και επισημαίνουμε το τρόπο με τον οποίο κατασκευάζει κανείς δυικές δομές από τις εκφράσεις για τις διαταραχές. Επίσης, χρησιμοποιώντας τη τεχνική της ολογραφικής επανακανονικοποίησης, εξετάζουμε το σύμμορφο σύνορο του χωροχρόνου. Βρίσκουμε εκεί μια σχέση δυισμού ανάμεσα στα στοιχεία του τανυστή ενέργειας-ορμής και του τανυστή Cotton της αντίστοιχης Chern - Simons θεωρίας, η οποία αποδεικνύεται ότι είναι άμεση συνέπεια του δυισμού στο AdS υπόβαθρο. Τέλος, εφαρμόζουμε την ίδια συλλογιστική στο Schwarzschild - Anti-de Sitter υπόβαθρο, όπου η παρουσία της μελανής οπής διαφοροποιεί τις συνοριακές συνθήκες του προβλήματος. Λόγω αυτού του γεγονός δεν μπορεί να πει κανείς με σιγουριά εάν μπορούν να διατυπωθούν σχέσεις δυισμού σε αυτή τη περίπτωση. Παρόλα αυτά βρίσκουμε ότι ισχύουν σχέσεις δυισμού στο σύμμορφο σύνορο παρόμοιες με αυτές του AdS υποβάθρου, πράγμα που σημαίνει ότι στο σύστημα παραμένει κάποια συμμετρία από τη γραμμική θεωρία. Η εργασία καταλήγει σε σχόλια και μία εκτενή συζήτηση για τις πιθανές μελλοντικές κατευθύνσεις. / In the linear version of the general theory of relativity, one considers metric perturbations around a fixed background. Keeping terms up to first order of perturbation leads to the linearized Einstein equations. In this framework it has been proved that a duality between the various elements of the Weyl tensor holds. This duality is similar to the one between the electric and magnetic fluxes of Maxwell's electromagnetism. In the present work we review the status of these dualities for non trivial backgrounds. We examine the Anti-de Sitter background, where we point out the way to explicitly construct dual configurations using the metric perturbation expressions. Using the holographic renormalization technique, we examine the conformal boundary where a duality between the components of the energy-momentum tensor and the Cotton tensor of the corresponding Chern - Simons theory holds. It is then proved that this duality is a direct consequence of the electric/magnetic duality in the bulk, in the case of the AdS background. Finally, we apply same procedure to the Schwarzschild - Anti-de Sitter background, where the presence of the black hole changes the boundary conditions of the problem. This simple fact makes it impossible say whether such a duality exists in this case. Nevertheless, we find that a duality similar to that of the AdS background still holds for the conformal boundary, which means that there is a remnant of symmetry from the linear theory. We conclude with comments and a extensive discussion on possible future directions.

Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-10-01T14:54:33Z No. of bitstreams: 1 MARCO ANTONIO CAVALCANTE ROSNER - DISSERTAÇÃO PPGCC 2012..pdf: 5553180 bytes, checksum: 2e38a38dc9e5326a52a238cecc68b4f0 (MD5) / Made available in DSpace on 2018-10-01T14:54:33Z (GMT). No. of bitstreams: 1 MARCO ANTONIO CAVALCANTE ROSNER - DISSERTAÇÃO PPGCC 2012..pdf: 5553180 bytes, checksum: 2e38a38dc9e5326a52a238cecc68b4f0 (MD5) Previous issue date: 2012-03-15 / Nos últimos anos tem-se observado a popularização do uso de smartphones e, aliado a isso, o crescimento do acesso à banda larga via smartphone. É nesse cenário que, com base na Computação Pervasiva, surge a Publicidade Pervasiva, a qual faz uso de dispositivos móveis e sensores para obter informações do contexto do usuário visando entregar o anúncio publicitário mais adequado. Contudo, a obtenção das informações de contexto utilizadas para recomendar anúncios de maneira oportunista, ou seja, o anúncio mais adequado para um usuário, tem como base o seu perfil e as suas preferências. Identificar estas preferências demanda interação do usuário, o que vai de encontro ao conceito de transparência da computação pervasiva. Neste trabalho propõe-se uma infraestrutura para entrega de anúncios de publicidade pervasiva personalizados de forma a encontrar o anúncio publicitário mais adequado ao consumidor, levando em conta estatísticas de consumo, o perfil do usuário e o contexto no qual está inserido. A utilização de estatísticas de consumo permite inferir o perfil do usuário baseado em um conjunto restrito de informações, reduzindo a necessidade de interação do usuário para identificação de seu perfil. Para avaliar a infraestrutura, foi desenvolvido um protótipo aplicado a um estudo de caso com professores, funcionários e estudantes da Universidade Federal de Alagoas, os quais receberam anúncios em dispositivos portáteis e indicaram quais desses anúncios eram de seu interesse. Durante o estudo, a solução proposta apresentou resultados melhores que as abordagens existentes na recomendação de anúncios oportunistas. / In recent years, the use of smartphones has been popularized and, beside of that, there are the growth of broadband access via smartphone. In this scenario, based on Pervasive Computing, Pervasive Advertising appears. The pervasive advertising make use mobile devices and sensors for obtain user context information to delivery ad. So, in this work is proposed a infra-structure for delivery pervasive ads in way to find the more suitable ad for consumer, using consumption statistics, user profile and context. The feasibility of this infra-structure was established through development of a case study where the prototype was available for teachers, workers and students of UFAL - Federal University of Alagoas - for they receive ads and verify that ads was interesting.

In this project we review the method of using c-extremization and computing anomalies to obtain AdS/CFT theories. We start with a quick introduction to CFT's and AdS/CFT correspondence which gives us the tools to later understand the 2D N= (2,0) SCFT and its gravity duals in particular AdS_5xS^5 and AdS_7xS^4 compactified on Riemann surfaces.

A participação dos artistas plásticos e gráficos na publicidade brasileira, mais especificamente na comercial de produtos e empreendimentos, entre as décadas de 1920-1940 constitui o núcleo de investigação desta tese. Se historicamente as artes plásticas e a publicidade internacionais sempre mantiveram relações estreitas e até mesmo conflituosas, indagou-se como teriam se comportado entre si esses dois campos profissionais no Brasil quando da passagem da nossa publicidade amadora para aquela moderna, impregnada, sobretudo, pelos métodos das agências norte-americanas atuantes no eixo Rio-São Paulo. A partir de um exame atento do mercado de trabalho dos diversos profissionais considerados, procurou-se entender as motivações que os levaram a produzir peças publicitárias, o que por sua vez direcionou o estudo ao questionamento das hierarquias artísticas, pois a relação entre a arte e a publicidade prolonga o consagrado debate em torno das artes mecânicas e liberais, e, por conseguinte as disputas entre arte maior e arte menor, entre arte pura, desinteressada e livre e arte comprometida, dentre outras tipologias usuais. Concomitantemente, averigou-se como a passagem e mesmo a convivência de um sistema acadêmico com um moderno, que se constituiu a partir dos anos 1920, alterou, ou melhor, conformou o campo artístico brasileiro. Frente a esses impasses, recorreu-se a algumas proposições teóricas mais atuais, que ao transferirem o foco problemático do campo artístico para o estético, atenuaram os questionamentos como também permitiram maior flexibilidade de análises. Nos exames formais das peças publicitárias, selecionadas em função de suas representatividades dentro do conjunto, defendeu-se a tese de que houve momentos em que a produção de cartazes e anúncios comerciais, este em maior número, aproximou-se de uma linguagem artística moderna, a exemplo dos projetos comerciais do artista Fulvio Pennacchi, que pertencem à coleção do Instituto Moreira Salles. E, na busca desses momentos estéticos modernos, procurou-se não enxertar e tão somente verificar correspondências com os moldes europeus, ao contrário, isso permitiu o conhecimento da nossa realidade, da modernidade artística que nos foi possível edificar, tendo em conta as variantes que o decorrer dos anos lhe agregou. Este posicionamento, em contrapartida, de forma alguma pôde desprezar o fato da história da propaganda brasileira ter fortes e ricas ligações com os modelos estrangeiros, portanto, impôs-se às análises iconográficas a tarefa de também investigar o quanto a nossa produção foi ou não uma reelaboração particular dos exemplos da arte publicitária em circulação. A interdisciplinaridade foi uma constante neste estudo pelo entrelaçamento de informações originárias de vários campos do conhecimento, sem a qual a pesquisa não teria êxito. / The role of the plastic and graphical artists in the Brazilian commercial advertising of products and enterprises, between the decades of 1920 and 1940, is the core of investigation of this thesis. Historically, plastic arts and advertising always kept narrow and even tough relationships in the international panorama. Therefore, in this work we have inquired the behavior of these two professional fields in Brazil as we pass from an amateur to a modern advertising. The latter has been influenced by the North-American advertising agencies from Rio de Janeiro and São Paulo. From a painstaking analysis of the labor market of several professionals in the plastic arts field, we have tried to understand the reasons that had taken them to produce advertisement materials. This has led us to investigate artistic hierarchies, since the relationship between art and advertising only emphasizes the old debate around mechanical and liberal arts, minor and major arts, pure and compromised arts, amongst other usual typologies. At the same time we investigated how the coexistence of an academic system and a modern one, established in the years of 1920, molded the Brazilian artistic field. Due to these impasses it was necessary to use some modern theoretical propositions that shifted the subject from the artistic to the aesthetic field, reducing doubts and allowing for a more flexible analysis. In the critical analysis of the selected advertisement materials, we looked for instances where the posters and commercial advertisements, the latter bigger in number, approached a more modern artistic language, such as the commercial projects of the artist Fulvio Pennacchi, that belong to the collection of the Instituto Moreira Salles. In pursuit of these modern aesthetic instances we have not tried only to find similarities with the European patterns but made an effort to understand our reality and the artistic modernity we were able to produce at that time. We did not deny the strong link between the Brazilian and the international advertising, therefore, in our iconographic analysis, we have investigated to what degree our advertisement productions were just reelaborations of the current advertisement art in circulation. In this thesis the interdisciplinarity played a major role due to the crossing of information from many areas of knowledge and, without it, our research would not be possible.

This diploma thesis deals with navigation on airport surface. In thesis there are described main surveillance systems, which are used for navigation on airport surface and systems for prediction and avoiding collisions. For all systems is listed principle of action, their usage, advantages and disadvantages and informations, which are provided by these systems. In last chapter there are compared properties of main surveillance systems.

Urychlovačem řízené podkritické systémy (ADS) se schopností transmutovat dlouhodobě žijící radionuklidy mohou vyřešit problematiku použitého jaderného paliva z aktuálních jaderných reaktorů. Stejně tak i potenciální problém s nedostatkem dnes používaného paliva, U-235, jelikož jsou schopny energeticky využít U-238 nebo i hojný izotop thoria Th-232. Tato disertační práce se v rámci základního ADS výzkumu zabývá spalačními reakcemi a produkcí tepla různých experimentálních terčů. Experimentální měření bylo provedeno ve Spojeném ústavu jaderných výzkumů v Dubně v Ruské federaci. V rámci doktorského studia bylo v průběhu let 2015-2019 provedeno 13 experimentů. Během výzkumu byly na urychlovači Fázotron ozařovány různé terče protony s energií 660 MeV. Nejdříve spalační terč QUINTA složený z 512 kg přírodního uranu, následně pak experimentální terče z olova a uhlíku nebo terč složený z olověných cihel. Byl proveden také speciální experiment zaměřený na detailní výzkum dvou protony ozařovaných uranových válečků, z nichž je složen spalační terč QUINTA. Výzkum byl především zaměřen na monitorování uvolňovaného tepla ze zpomalovaných protonů, spalační reakce a štěpení, způsobeného neutrony produkovanými spalační reakcí. Dále se na uvolňování tepla podílely piony a fotony. Teplota byla experimentálně měřena pomocí přesných termočlánků se speciální kalibrací. Rozdíly teplot byly monitorovány jak na povrchu, tak uvnitř terčů. Další výzkum byl zaměřený na monitorování unikajících neutronů z terče porovnávací metodou mezi dvěma detektory. První obsahoval malé množství štěpného materiálu s teplotním čidlem. Druhý byl složený z neštěpného materiálu (W nebo Ta), avšak s podobnými materiálovými vlastnostmi se stejnými rozměry. Unik neutronů (resp. neutronový tok mimo experimentální terč) byl detekován uvolněnou energií ze štěpné reakce. Tato práce se zabývá přesným měřením změny teploty pomocí termočlánků, s využitím elekroniky od National Instrument a softwaru LabView pro sběr dat. Pro práci s daty, analýzu a vizualizaci dat byl použit skriptovací jazyk Python 3.7. (s využitím několika knihoven). Přenos částic by simulován pomocí MCNPX 2.7.0., a konečně simulace přenosu tepla a určení povrchové teploty simulovaného modelu bylo provedeno v programu ANSYS Fluent (pro jednodušší výpočty ANSYS Transient Thermal).

The topic of this thesis relates to the state-of-art technologies and systems used for airport ground movements monitoring and guidance. Emphasis is placed on mode S of SSR, its characteristics, applications and avionics requirements. This thesis further comprises analysis of Brno - Turany Airport and it presents a new multilateration system including economical analysis, which would be used for aerodrome ground movements monitoring.

Cette thèse a pour but l'enrichissement des méthodes supervisées d'analyse de données symboliques et l'extension de ce domaine aux données volumineuses, dites "Big Data". Nous proposons à cette fin une méthode supervisée nommée HistSyr. HistSyr convertit automatiquement les variables continues en histogrammes les plus discriminants pour les classes d'individus. Nous proposons également une nouvelle méthode d'arbres de décision symbolique, dite SyrTree. SyrTree accepte tous plusieurs types de variables explicatives et à expliquer pour construire l'arbre de décision symbolique. Enfin, nous étendons HistSyr aux Big Data, en définissant une méthode distribuée nommée CloudHistSyr. CloudHistSyr utilise Map/Reduce pour créer les histogrammes les plus discriminants pour des données trop volumineuses pour HistSyr. Nous avons testé CloudHistSyr sur Amazon Web Services (AWS). Nous démontrons la scalabilité et l’efficacité de notre méthode sur des données simulées et sur les données expérimentales. Nous concluons sur l’utilité de CloudHistSyr qui , grâce à ses résultats, permet l'étude de données massives en utilisant les méthodes d'analyse symboliques existantes. / This Thesis proposes new supervised methods for Symbolic Data Analysis (SDA) and extends this domain to Big Data. We start by creating a supervised method called HistSyr that converts automatically continuous variables to the most discriminant histograms for classes of individuals. We also propose a new method of symbolic decision trees that we call SyrTree. SyrTree accepts many types of inputs and target variables and can use all symbolic variables describing the target to construct the decision tree. Finally, we extend HistSyr to Big Data, by creating a distributed method called CloudHistSyr. Using the Map/Reduce framework, CloudHistSyr creates of the most discriminant histograms for data too big for HistSyr. We tested CloudHistSyr on Amazon Web Services. We show the efficiency of our method on simulated data and on actual car traffic data in Nantes. We conclude on overall utility of CloudHistSyr which, through its results, allows the study of massive data using existing symbolic analysis methods.

This thesis examines the influence of advertisers on the content of printed motoring magazines through the method of quantitative content analysis. The thesis asks whether an increasement of advertising can or can not influence media's reporting on advertisers' products. The thesis examines three Czech printed motoring magazines: Svět motorů, Automobil revue and auto motor a sport. The theoretical part deals with the dual-market topic, in other words the theory of two types of media's customers: paying readers and paying advertisers. They can - and according to the theory they often do - differ in their interests. The advertiser is interested in showing his products in the media in the best possible light, on the contrary, the reader is interested in being informed as objectively as possible. The theoretical part is based mainly on McQuail (2009) and Jirák and Köpplová (2015), who deal, inter alia, with the dilemma of two customers. Part of the theory is devoted to several other research which have examined the same topic; e. g. in the context of Italian fashion magazines. The work itself is based on research questions that ask about a correlation between the amount of advertising and amount (and tonality) of editorial content devoted to the advertisers as well as a possible influence of...