abstract: Most existing approaches to complex event processing over streaming data rely on the assumption that the matches to the queries are rare and that the goal of the system is to identify these few matches within the incoming deluge of data. In many applications, such as stock market analysis and user credit card purchase pattern monitoring, however the matches to the user queries are in fact plentiful and the system has to efficiently sift through these many matches to locate only the few most preferable matches. In this work, we propose a complex pattern ranking (CPR) framework for specifying top-k pattern queries over streaming data, present new algorithms to support top-k pattern queries in data streaming environments, and verify the effectiveness and efficiency of the proposed algorithms. The developed algorithms identify top-k matching results satisfying both patterns as well as additional criteria. To support real-time processing of the data streams, instead of computing top-k results from scratch for each time window, we maintain top-k results dynamically as new events come and old ones expire. We also develop new top-k join execution strategies that are able to adapt to the changing situations (e.g., sorted and random access costs, join rates) without having to assume a priori presence of data statistics. Experiments show significant improvements over existing approaches. / Dissertation/Thesis / M.S. Computer Science 2011

Studien som här sammanfattas är kvantitativ och börjar med en redogörelse av tidigare forskning inom ämnena, medarbetarskap, top-down – bottom-up, samt street level bureaucacy. Därefter redovisas den teoretiska referensramen som arbetet utgått från; Dochertys organisatoriska lärande. En svensk kommun bestående av omkring 10 000 medarbetare har använts som population till arbetet hos vilken en surveyundersökning genomförts. Syftet med studien var att undersöka relationen mellan lärande och medarbetarskap. Fokusområden har varit individens lärande inom organisationen liksom hur detta påverkat deras intryck av sitt medarbetarskap. Det resultat som framkommit visar att lärande är bidragande till ett välmående medarbetarskap. Slutligen skildras en analys av resultatet som sedan leder till en diskussion.

The thesis results of two laboratory experiments focusing on the impacts of predation risk, prey density and habitat complexity on predator-prey interaction strengths and predator metabolic rates, complemented by a brief review of the subject. The experimental system used in the first experiment consisted of cladoceran prey, larvae of three dragonfly species (Sympetrum sanguineum, Libellula quadrimaculata, Ischnura cf. elegans) as intermediate predators, and larvae of a large dragonfly species (Aeshna sp.) as a top predator. The second experiment of investigated how predation risk influences metabolic rates of the intermediate predators.

Summary The thesis deals with the effect of mechanic invasion and top dressing applications on the quality of the lawn's greensward and weight of the root system of the plant. The aim of this thesis was to evaluate the effect of aeration, verticutation and top dressing in terms of support of plant root system, the presence of weeds in the lawn and also effect on the color of the grass and compactness of the lawn. Made mechanization interventions were evaluated without further intervention, verticutation and aeration. Application of top dressing is evaluated with and without step. The experiment was turfed in the Central region, twenty kilometers southeast of Prague. The greatest effect (P<0,05) on the weight of the root system should aeration with verticutation and smallest (P<0,05) the weight of the root system had lawn without mechanization invasion. In evaluating the compactness of the lawn was rated verticutation (P<0,05) as the worst. The best (P<0,05) color had lawn without any mechanized invasion and least (P<0,05) weed species was found out in combination of aeration and verticutation. Application of organic top dressing showed a positive effect on the weight of the root system. It was also found lower incidence of weeds. For top dressing applications has not been demonstrated a positive effect on the colour of the lawn. Application of top dressing had a positive effect on compactness of the lawn.

Doctor of Philosophy / Department of Psychological Sciences / Lester C. Loschky / Political videos are created as persuasive media, and at a basic level that persuasion would require that the videos guide viewer attention to the relevant persuasive content. Recent work has shown that filmmakers have techniques that allow them to guide where viewers look, and this guidance occurs even when viewers have very different understandings of the film. The current research tested if these attentional effects carry over to political videos, or if the top-down factors of attitude congruence and social vigilantism, belief superiority and the tendency to impress one’s “superior” beliefs on others (O'Dea, Bueno, & Saucier, 2018; Saucier & Webster, 2010; Saucier, Webster, Hoffman, & Strain, 2014), will break the ability of videos to guide viewers’ attention. Attentional selection was measured through participants’ eye movements, and memory encoding was measured through recall and recognition for both verbal and visual information. Three overarching competing hypotheses predicted different relationships between attitude congruence, social vigilantism, and visual attention and memory. The Tyranny of Film Hypothesis predicted that the videos would guide viewer attention, regardless of attitude congruence. This would result in similar eye-movements and memory for all participants. The Selective Exposure Hypothesis predicted that participants would avoid processing attitude-incongruent information. As a result, viewers’ visual attention would be directed away from attitude-incongruent information, and subsequent memory would be worse. Lastly, the Social Vigilantism Hypothesis predicted that people high in Social Vigilantism would engage more with attitude-incongruent information. Two experiments tested these hypotheses. The first was the Memory experiment (conducted online), and the second was the Eye movement experiment. In each experiment, participants watched a series of political advertisement and debate videos, and attitudes were measured to identify which information in the videos was attitude-congruent and incongruent. The Memory experiment showed some support for the Social Vigilantism Hypothesis, with People high in Social Vigilantism having better memory for attitude-incongruent information on certain memory measures. Conversely, the Eye movement experiment consistently showed strong stimulus driven effects in support of the Tyranny of Film, but also weaker attitude and social vigilantism effects that were independent of attitude congruence. Altogether, these results show dynamic video stimuli features are the best predictors of viewer attention and memory, but viewer attitude and social vigilantism have subtle top-down effects. The support for different hypotheses between the two experiments indicates the strength of top-down effects may depend on the format of the viewing experience, and specifically how much control the viewer has over the experience.

Dissertação (mestrado)—Universidade de Brasília, Faculdade de Direito, Programa de Pós-Graduação em Direito, 2018. / Submitted by Raquel Almeida (raquel.df13@gmail.com) on 2018-05-15T15:47:01Z No. of bitstreams: 1 2018_VictorOliveiraFernandes.pdf: 2203164 bytes, checksum: 7ad140f25258e6eb1c8529479d6651b8 (MD5) / Approved for entry into archive by Raquel Viana (raquelviana@bce.unb.br) on 2018-06-05T12:54:35Z (GMT) No. of bitstreams: 1 2018_VictorOliveiraFernandes.pdf: 2203164 bytes, checksum: 7ad140f25258e6eb1c8529479d6651b8 (MD5) / Made available in DSpace on 2018-06-05T12:54:35Z (GMT). No. of bitstreams: 1 2018_VictorOliveiraFernandes.pdf: 2203164 bytes, checksum: 7ad140f25258e6eb1c8529479d6651b8 (MD5) Previous issue date: 2018-06-04 / Esta dissertação trata da regulação de serviços baseados na internet, comumente chamados de serviços over-the-top (OTT). Em especial, o objetivo do estudo é analisar o regime jurídicosetorial aplicável aos serviços OTT de voz definido a partir da atuação das agências reguladoras de telecomunicações norte-americana e brasileira no recorte temporal das últimas duas décadas. Com base em teorias que consubstanciam prescrições normativas sobre como regular serviços de telecomunicações e internet no contexto pós-convergência tecnológica, o trabalho busca responder à seguinte pergunta de pesquisa: as atuações das agências reguladoras nacionais de telecomunicações no período histórico analisado têm resultado na construção de regimes jurídicos estáveis e horizontais em mercados funcionalmente equivalentes? De início, apontase uma hipótese negativa, tendo em vista as assimetrias regulatórias a que estão submetidos os serviços de telecomunicações e de internet potencialmente substitutivos nas jurisdições analisadas. O expediente investigativo se desenvolve em quatro capítulos. No Capítulo 1, é feita uma breve revisão da ainda incipiente literatura sobre serviços OTT, destacando-se os seus principais aspectos regulatórios controversos e a importância da atuação das agências reguladoras de telecomunicações, no limite da sua competência, para a definição do regime jurídico setorial aplicável àqueles serviços. No Capítulo 2, é realizada uma explicação pormenorizada das teorias de regulação utilizadas neste estudo, destacando-se três prescrições que delas derivam e que são fixadas como variáveis de análise do objeto de pesquisa delimitado. No Capítulo 3, são examinados o enquadramento jurídico dos serviços OTT no âmbito do Telecommunications Act de 1996 e o processo histórico de conformação dos direitos e das obrigações regulatórias aplicáveis aos serviços OTT de voz nessa jurisdição pela Federal Communications Commision (FCC). No Capítulo 4, analisa-se o enquadramento dos serviços OTT na Lei Geral de Telecomunicações (LGT), bem como as possibilidades de regulação desses serviços na interface entre a LGT e o Marco Civil da Internet (MCI). Investiga-se de que forma a Agência Nacional de Telecomunicações (ANATEL) tem definido o regime jurídico setorial dos serviços OTT de voz nos últimos anos e quais são os principais desafios atuais envolvidos na superação das assimetrias regulatórias existentes entre serviços de telecomunicações e os Serviços de Valor Adicionado (SVA). Por fim, a conclusão do trabalho consolida os resultados da análise das experiências nacionais comparadas, apontando em relação a elas (i) uma coincidência quanto ao diagnóstico de insuficiência da bipolaridade normativa entre serviços de telecomunicações e serviços de internet; (ii) uma divergência, ainda que parcial, quanto ao manejo de políticas regulatórias incrementais na definição das obrigações econômicas e sociais aplicáveis os serviços OTT de voz; e (iii) uma ausência comum de perspectivas de reformas estruturais voltadas ao estabelecimento de regimes jurídicos estáveis e horizontais em mercados funcionalmente equivalentes. / This dissertation analyses the regulation of internet-based services, commonly known as overthe-top services (OTT). The study examines the regulatory framework applicable to OTT voice services in light of decisions and procedures implemented by the telecommunications regulatory agencies in USA and Brazil over the last two decades. It addresses the following research question: have the decisions and procedures implemented by the telecommunications regulatory agencies constructed a regulatory framework that apply the same rules to substitutes services? The initial hypothesis is negative, due to distinct regulatory rules applicable to telecommunications operators and internet firms in both jurisdictions. The analysis is undertaken in four chapters. In Chapter One, the dissertation engages in a short review of the currently scarce literature related to OTT regulation. In Chapter Two, it explores legal theories that offer normative prescriptions for regulating telecommunications and internet-based services in the so-called post-technological convergence era. In Chapter Three, it analyses the classification of services established by the North American Telecommunications Act of 1996 and the regulatory procedures related to OTT voice services which were implemented by the Federal Communications Commission (FCC) over the last two decades. In Chapter Four, the dissertation analyses the legal framework of OTT in Brazil, under the General Telecommunications Law and the Brazilian Civil Rights Framework for the Internet. It examines how the Brazilian telecommunications agency (Agência Nacional de Telecomunicações – ANATEL) has treated OTT voice services during the analyzed period. It also addresses the current challenges for overcoming regulatory asymmetries between telecommunications services and value-added services in Brazil. In its conclusion, the comparative regulatory analysis indicates (i) an undisputed insufficiency of the legal dichotomy between telecommunications and value-added services; (ii) a partial difference in the implementation of incremental regulatory strategies applicable to OTT voice services and (iii) a common lack of perspective of structural reforms that could establish convergent regulatory policies in functional equivalent markets.

Made available in DSpace on 2014-06-11T19:24:08Z (GMT). No. of bitstreams: 0 Previous issue date: 2002-02-19Bitstream added on 2014-06-13T20:12:03Z : No. of bitstreams: 1 alencarjunior_ea_me_arafo_prot.pdf: 747787 bytes, checksum: fd32e276778e87934566a313af1035b5 (MD5) / O objetivo desta pesquisa foi avaliar a influência da distância de uma fonte de luz halógena na microdureza superficial da resina composta, considerando as superfícies de topo e base dos corpos-de-prova. Foram utilizadas duas marcas comerciais de resina composta, Z250 de partículas pequenas e uma resina de micropartícula, A110, ambas da 3M do Brasil Ltda. O aparelho de ativação da resina composta foi K&M 220- R, cuja intensidade de luz possui um pulso que variava após os 5 primeiros segundos assim alcançando sua intensidade máxima que foi medida em 720 mW/cm2. Para a determinação da intensidade de luz emitida pelo aparelho fotoativador, utilizou-se um radiômetro (Medidor de irradiância 150- CMC , São Carlos - SP). Corpos-de-prova foram confeccionados utilizado-se matrizes metálicas que possuíam um orifício central de 4mm de diâmetro por 2mm de espessura. As resinas foram inseridas no orifício da matriz metálica, em um único incremento, por meio de uma espátula metálica e sobre elas foi sobreposta uma tira matriz transparente de poliéster e, após isto, um peso de 1 Kg foi posto em cima da tira para que houvesse uma melhor condensação da resina composta evitando a presença de bolhas de ar, no interior do corpo-de-prova. A fonte de luz halógena foi fixada em uma mesa de maneira que a saída da ponta de luz ficasse paralela à superfície do corpo-de-prova. Para provocar o distanciamento da fonte de luz, anéis metálicos confeccionados em latão, com espessuras que variavam de 2mm, 4mm e 8mm foram utilizados, os quais, após posicionados, eram removidos para não interferiem no dispersamento da luz. As distâncias imprimidas a fonte de luz na superfície da resina foram de 0mm(tocando a superfície), 2mm, 4mm e 8mm. Para cada uma destas distâncias, a intensidade de luz foi medida. Esta variou de intensidade de... . / The aim of this research was to evaluate the influence of the light tip distance in the superficial microhardness of the composite resin, considering the surfaces of top and base of the samples. Two commercial composite resin marks had been used, Z250 of small particles e a microparticle resin, A110, both of 3m of Brazil Ltda. The device of activation of the composite resin was K&M 220- R, whose intensity of light possess a pulse that varied the 5 first seconds after thus reaching its maximum intensity that was measured in 720 mW/cm2. For the determination of the intensity of light emitted for the fotoativador device, a radiometer (Measuring of irradiance 150- CMC was used, Is Carlos. SP). The samples had been confectioned used first metallic that had a central orifice of 4mm of diameter for 2mm of thickness. The resins had been inserted in the orifice of the metallic array, in an only increment, by means of a metallic spatula and on them a transparent first polyester strap was overlapped and, after this, one weight of 1 kg was rank in top of the strap so that it had one better condensation of the composite resin preventing the presence of air bubbles, in the inward of the body-of-test. The source of light was fixed in a table thus the output of the light tip was parallel to the surface of the body-of-test. To provoke distance from the light source, confectioned metallic rings in brass, with thickness that varied of 2mm, 4mm and 8mm had been used, which, after located, was removed to avoid concentration of light. The printed pitches the source of light in the surface of the resin had been of 0mm(on the surface), 2mm, 4mm and 8mm. For each one of these pitches, the light intensity was measured. This varied of intensity of 720 mW/cm2 for the tip touching the surface of the body-of-test, 650 mW/cm2 for in the distance of 2mm, 600 mW/cm2... (Complete abstract, click electronic address below).

Abstract Internal rotation in symmetric top molecules offers an excellent opportunity to investigate large amplitude motion in a relatively simple intramolecular environment. Due to specific symmetry characteristics of a symmetric top molecular frame, the internal rotation degree of freedom is in the zeroth order approximation separable from the small amplitude vibrations and the overall rotation, thus enabling to characterize the vibrational-torsional-rotational energy structure with a relatively simple Hamiltonian. Lessons from symmetric internal rotor studies may be applied to more complex systems, such as asymmetric internal rotors and macromolecules. This thesis deals with internal rotation in CH3SiH3, CH3SiD3, CH3CF3 which have become a prototype of symmetric internal rotors. The thesis presents high resolution vibration-torsion-rotation spectra and detailed analysis of these molecules. Particular attention is focused on torsion-mediated interactions, such as Coriolis-type interactions and Fermi-type interactions, coupling the internal rotation and the small amplitude vibrational motion. The studies show that the expansion of the data to the small amplitude vibrations and inclusion of the torsion-mediated interactions play a crucial role in order to obtain an appropriate characterization of the vibrational-torsional-rotational energy level structure and physically meaningful molecular parameters.

L'expérience CMS auprès du LHC, grand collisionneur de hadrons, est un détecteur généraliste qui permet d'étudier tous les aspects des collisions proton-proton produites par le LHC : de l'étude du Modèle Standard et du boson de Higgs à la recherche de signaux de nouvelle physique au-delà du Modèle Standard.La première partie de cette thèse est dédiée à la calibration en énergie des jets dans CMS, un des plus grands défis et une étape fondamentale pour la réussite du programme de physique dans cet environnement hadronique. Plus particulièrement, l'étude des événements multijets permet de contraindre l'échelle en énergie des jets au-delà du TeV. Les corrections en énergie ainsi extraites sont primordiales pour les analyses de physique utilisant des jets, et sont utilisées par toute la collaboration CMS.La deuxième partie est consacrée à la recherche de particules de spin 0 se désintégrant en paires de quarks top-antitop. En effet, de nombreux modèles de nouvelle physique prédisent de nouvelles particules scalaires ou pseudoscalaires avec un fort couplage au quark top. Une étude phénoménologique de deux de ces modèles est présentée, à savoir les modèles à deux doublets de Higgs (2HDM) et l'extension supersymétrique minimale du Modèle Standard (MSSM). Ces modèles offrent tous deux un secteur de Higgs enrichi avec entre autre deux bosons de Higgs neutres additionnels, un scalaire et un pseudoscalaire. Une analyse du spectre de masse invariante des paires top-antitop utilisant les données collectées par CMS en 2012 à une énergie dans le centre de masse de 8 TeV visant à mettre en évidence l'existence de telles particules est menée. Cette analyse prend en compte pour la première fois les effets des interférences entre la production des paires top-antitop du Modèle Standard et la production résonante à travers la nouvelle particule de spin 0. Il est montré que l'impact des interférences ne peut être négligé. Aucune déviation par rapport aux prédictions théoriques du Modèle Standard n'a été observée dans le spectre de masse invariante des paires top-antitop. Un premier aperçu des données à 13 TeV est également présenté / The CMS experiment at the LHC, the Large Hadron Collider, is a general-purpose detector built to study the proton-proton collisions produced by the LHC, corresponding to a broad physics programme ranging from studying the Standard Model and the Higgs bosons to searching for signal of new physics beyond the Standard Model.The first part of this thesis is dedicated to the jet energy calibration in CMS, one of the most challenging and crucial steps for the sucess of the physics programme within the hadronic environment. More specifically, the study of multijet events allows to constraint the jet energy scale beyond the TeV-scale. The jet energy corrections thus obtained are fundamental for the physics analyses using jets, and are used by all the CMS collaboration.The second part of this manuscript is dedicated to the search for new spin 0 particles decaying into top-antitop quarks pairs. Indeed, several new physics models predict new scalar or pseudoscalar particles with an enhanced coupling to the top quark. A phenomenological study of two of those models is presented, namely the two higgs doublet models (2HDM) and the minimal supersymmetric extension of the Standard Model (MSSM). These models both offer an enriched Higgs sector with in particular two additional neutral Higgs bosons, one scalar and one pseudoscalar. The analysis of the top-antitop pairs mass spectrum using data collected by CMS in 2012 at an energy in the center of mass of 8 TeV is presented, looking for such particles. This search takes into account for the first time the effects of interference between Standard Model top-antitop pairs production and its resonant production through the spin 0 particle. This work shows the impact of interference cannot be neglected. No deviation from the Standard Model predictions has been observed in the top-antitop mass spectrum. A first look at 13 TeV data is also presented

The first measurement of the spin correlation strength in pairs of top quarks at √s=8 TeV is presented, using data collected using the ATLAS detector, corresponding to an integrated luminosity of 20.3 fb⁻¹. Dileptonically decaying tt^- events are selected with two high-pT leptons and at least two jets, one of which is required to be b-tagged. The azimuthal angle between the two charged leptons, Δφ, is used to measure the degree of spin correlation of top quark pairs. The extracted value of fSM, which is a measure of the spin-correlation strength, is fSM=1.20 ± 0.14. This is the most precise spin-correlation measurement to date. Using the Δφ distribution, a search for Supersymmetric top squarks is performed, with the assumption that the top squarks decay to a top quark and a neutralino. No excess of events is observed and top squarks with masses between the top quark mass and 191 GeV are excluded at 95% confidence level, extending previous limits.