This study investigates the accuracy of the wave products retrieved by a 12-MHz high-frequency (HF) phased-array radar, and establishes their potential to characterise wave-current interactions. The two stations composing the system were deployed in 2011 to overlook the Wave Hub, a test site for marine renewable energy devices located on the south-western coast of the United Kingdom. The system was conceived and configured to reduce the inaccuracies introduced by short time averaging and minimal overlap between stations, both associated with the most traditional HF radar deployments, whose primary activity is current measurement. Wave spectra were retrieved by two independent inversion algorithms, which were evaluated both independently and relative to each other. This process helped determining the errors associated to the algorithm used, and differentiated them from those inherent to the radar technology itself. The first method investigated was a semi-empirical algorithm distributed with Wellen Radars (WERA), which was calibrated using in situ measurements collected within the radar footprint. Evaluated through comparison against measurements acquired by three in situ devices, the results revealed estimates of significant wave height with biases below 9 cm, Pearson correlations higher than 0.9, and RMS errors that range from 29 to 44 cm. The relative error of wave energy period comparisons was within 10% for periods between 8 and 13 s, while both under- and overestimations were observed above and below that range, respectively. The validation demonstrated that when locally calibrated, the algorithm performs better than in its original form in all metrics considered. Observed discrepancies were mainly attributable to single-site estimations, antenna sidelobes, and the effect of the second-harmonic peaks of the Doppler spectrum. As opposed to the semi-empirical inversion, the second method evaluated in this work provides estimates of the full directional spectrum. Compared against the in situ measurements, the radar spectra were more spread over frequencies and directions, and had a lower energy content at the peak of the spectrum. In terms of parameter estimation, this was generally translated in a slight underestimation of wave periods, but accurate estimates of significant wave heights. Pearson correlations between these parameters and the in situ measurements for the bulk of the spectrum were higher than 0.9, and both types of measurements resulted in similar standard deviations. The inversion algorithm showed a high skill estimating mean wave directions, which revealed linear correlations higher than 0.8, when compared to the in situ devices. Overall, the inversion algorithm has shown to be capable of providing accurate estimates of directional spectra and the parameters derived from them, and at present the main drawback of the method is the data return, which due to the high data quality requirements of the algorithm, did not exceed 55% over the 8-month period studied here. In the second part of this work, the validated measurements were examined to determine their ability to reproduce the effects of wave-current interactions. The fine structure of the surface current was first evaluated, and revealed a circulation dominated by tides. The residual flow was seen to respond to the wind, as well as to the stratification present in the area during the spring and summer months. These data were then used to assess their contribution to wave refraction over the radar domain. The results show modulations in the wave phase parameters, which resulted from both the temporal and spatial derivatives of the surface current velocities. The evaluation of HF radar wave measurements provided in this work has shown that, properly configured, this technology can produce accurate estimates of several statistical descriptors of the wave field. Together with the highly accurate surface currents also measured by this device, the spatial wave data obtained has proved to have great potential for studying wave-current interactions; a skill that can be of support to coastal wave modelling.

Dissertação (mestrado)—Universidade de Brasília, Faculdade de Ceilândia, Programa de Pós-Graduação em Ciências e Tecnologias em Saúde, 2017. / Submitted by Raiane Silva (raianesilva@bce.unb.br) on 2017-08-02T19:11:57Z No. of bitstreams: 1 2017_BárbaradePaulaOliveira.pdf: 2078803 bytes, checksum: b93fdc2304c0a6f73cac3779c9b58b71 (MD5) / Approved for entry into archive by Raquel Viana (raquelviana@bce.unb.br) on 2017-09-19T13:19:43Z (GMT) No. of bitstreams: 1 2017_BárbaradePaulaOliveira.pdf: 2078803 bytes, checksum: b93fdc2304c0a6f73cac3779c9b58b71 (MD5) / Made available in DSpace on 2017-09-19T13:19:43Z (GMT). No. of bitstreams: 1 2017_BárbaradePaulaOliveira.pdf: 2078803 bytes, checksum: b93fdc2304c0a6f73cac3779c9b58b71 (MD5) Previous issue date: 2017-09-19 / Pensando as subjetividades trans* para além do olhar médico patológico, essa dissertação reflete, através de um olhar etnográfico, sobre a existência de pessoas trans* a partir do grupo de apoio a pessoas trans* do Hospital Universitário de Brasília (HUB) – DF. Partindo de suas estórias de vida, esse trabalho aborda a dimensão do reconhecimento de si enquanto trans* e a sua relação com o corpo, a sexualidade, o ativismo trans* e o processo de saúde-doença no cotidiano de oito pessoas trans*. As normas binárias de gênero atravessam a vida das pessoas trans* fazendo-nos repensar o que é “ser mulher/homem”. Por isso, aparece o desejo de se encaixar em ideias consideradas universais do que é considerado feminino/masculino, mas ao mesmo tempo em que transgressões desses modelos, através das subjetividades vividas de maneira singular por cada pessoa. Assim, as concepções de corpo, sexualidade, saúde, doença e o desejo por fazer parte ou não de movimento sociais trans* se constroem em um constante encaixe e quebra das normas binárias de gênero. As estórias aqui trabalhadas retratam esse pano de fundo. / Thinking of the trans* subjectivities beyond the pathological medical gaze, this dissertation reflects, through an ethnographic view, the existence of trans* people from the support group to trans* people of the Hospital Universitário de Brasília (HUB) - DF. Starting from his life stories, this work addresses the dimension of self-recognition as a trans * and its relation to the body, sexuality, trans-activism, and the health-disease process in the daily life of eight trans people. Binary gender norms cross the lives of trans* people making us rethink what it is to be "woman/man". Therefore, the desire to fit in ideas considered universal of what is considered feminine/masculine appears, but at the same time in which transgressions of these models, through the subjectivities lived of singular way by each person. Thus, conceptions of body, sexuality, health, disease and the desire to become part of trans* social movements are built in a constant fit and break of binary norms of gender. The stories here worked out portray this background.

Dissertação (mestrado)—Universidade de Brasília, Faculdade de Economia, Administração e Contabilidade, Programa de Pós-Graduação em Economia, 2015. / Submitted by Guimaraes Jacqueline (jacqueline.guimaraes@bce.unb.br) on 2015-10-22T11:19:34Z No. of bitstreams: 1 2015_WilsonAlvesBorbaJunior.pdf: 1070196 bytes, checksum: b54f5805691570fe156ee294cf8a6ea6 (MD5) / Approved for entry into archive by Patrícia Nunes da Silva(patricia@bce.unb.br) on 2015-10-23T13:39:58Z (GMT) No. of bitstreams: 1 2015_WilsonAlvesBorbaJunior.pdf: 1070196 bytes, checksum: b54f5805691570fe156ee294cf8a6ea6 (MD5) / Made available in DSpace on 2015-10-23T13:39:58Z (GMT). No. of bitstreams: 1 2015_WilsonAlvesBorbaJunior.pdf: 1070196 bytes, checksum: b54f5805691570fe156ee294cf8a6ea6 (MD5) / O presente estudo analisa o impacto que a pesquisa médica gera em um hospital universitário em termos finalísticos, primordialmente financeiros e econômicos que devem ser o alicerce de representatividade de um hospital de ensino. Mostramos como se deve tratar a pesquisa médica em hospitais universitários durante estes últimos anos, onde a instituição ganha grandes contornos e transformações nesta seara utilizando de análise de dados extraídos de artigos de referência nacional e internacional e da instituição Hospital Universitário de Brasília. Para tanto não formulamos uma análise estatística basilar. Avaliamos se os impactos financeiros e econômicos dentro da instituição importam em um mero sumidouro de recursos orçamentários ou se traduz em algo que aporta maior valor agregado dentro do contexto econômico para a instituição e sociedade. Preocupamo-nos em incorporar elementos de qualidade e quantidade ao avaliarmos os recursos para pesquisa médica do HUB. Nossos resultados apresentam evidências da necessidade de uma gestão diferenciada no trato da pesquisa acadêmica médica do HUB para que se maximize o fundamento de existência da instituição, para auto sustentabilidade e primordialmente para que desperdícios de recursos, que já são escassos, sejam evitados. ______________________________________________________________________________ ABSTRACT / This study analyzes the impact that medical research generates in a university hospital in finalistic terms, primarily financial and economic factors that should be the foundation of representation of a teaching hospital. We show how to treat medical research at university hospitals over the past few years in which the Bank earns large contours and changes in this endeavor using data extracted from analysis of national and international reference articles and the University Hospital of Brasilia institution. For that we not formulated a basic statistical analysis. We evaluate if the financial and economic impacts within the institution mind a mere sink of budgetary resources or translates into something that brings greater added value within the economic context for the institution and society. We focus on incorporating elements of quality and quantity to evaluate the resources for medical research hub. Our results provide evidence of the need for a differentiated management in dealing with medical academic research to the HUB that maximize the existence of foundation of the institution for self sustainability and primarily to waste of resources, which are scarce, are avoided.

Dissertação (mestrado)—Universidade de Brasília, Faculdade de Economia, Administração e Contabilidade, Programa de Pós-graduação em Economia, Mestrado Profissional em Economia, 2015. / Submitted by Fernanda Alves Mignot (fernandamignot@hotmail.com) on 2015-11-05T18:43:55Z No. of bitstreams: 1 2015_DenisedeSousaVieira.pdf: 1022145 bytes, checksum: 523b80ad2f8255c7056e28687487360b (MD5) / Approved for entry into archive by Raquel Viana(raquelviana@bce.unb.br) on 2015-11-05T19:44:13Z (GMT) No. of bitstreams: 1 2015_DenisedeSousaVieira.pdf: 1022145 bytes, checksum: 523b80ad2f8255c7056e28687487360b (MD5) / Made available in DSpace on 2015-11-05T19:44:13Z (GMT). No. of bitstreams: 1 2015_DenisedeSousaVieira.pdf: 1022145 bytes, checksum: 523b80ad2f8255c7056e28687487360b (MD5) / A inovação tecnológica progrediu de forma tão acelerada que vem fazendo parte de quase todos os aspectos de nossas vidas. A Tecnologia em saúde é entendida como sendo os medicamentos, equipamentos, dispositivos e procedimentos médicos cirúrgicos usados no cuidado médico bem como os sistemas organizacionais e de apoio mediante os quais este cuidado é dispensado. Nesse sentido, quando uma nova tecnologia é anunciada põe em movimento fortes motivações humanas e expectativas de pacientes, médicos, administradores de instituições e empresas de saúde. Contudo, as crescentes inovações e a utilização de tecnologias em saúde acarretam aumento dos custos dos serviços e dos gastos globais. Assim, quando se decide pela aquisição de novos equipamentos hospitalares, entende-se que a gestão de tal processo deve ser voltada para a satisfação dos requisitos de qualidade e segurança ao menor preço possível. Nesse sentido, o presente estudo pretende tratar dos processos de incorporação de equipamentos médicos nos Hospitais de Ensino: estudo de caso no Hospital Universitário de Brasília (HUB). O objetivo geral é discorrer sobre os processos formais de incorporação de equipamentos médicos em hospitais universitários e de ensino no Brasil por meio dos recursos do Programa de Reestruturação dos Hospitais Universitários Federais - REHUFE no HUB. A metodologia aplicada ao presente estudo se traduz por uma pesquisa bibliográfica e documental, de caráter qualitativo, realizada para fins de se analisar o fenômeno dissertado, procurando entendê-lo através das considerações colecionadas por autores renomados quanto ao tema escolhido, pela legislação correlata, bem como por um estudo de caso representado por entrevistas estruturadas aplicadas a gestores do Hospital Universitário de Brasília - HUB. Pode-se concluir que uma gestão eficiente de equipamentos deve ser empregada desde a aquisição até o acompanhamento do ciclo de vida, baseada em critérios e protocolos que obtenham êxito em reduzir os custos e aumentar os benefícios. ______________________________________________________________________________________________ ABSTRACT / Technological innovation has progressed in such a fast pace that has been part of almost every aspect of our lives. Health Technology is understood as medicines, equipment, medical devices and surgical procedures used in medical care as well as the organizational and support systems through which this care is dispensed. In this sense, when a new technology is announced sets in motion strong human motivations and expectations of patients, doctors, administrators institutions and healthcare companies. However, increasing innovation and use of health technologies entail rising costs of global services and expenses. Thus, when deciding on the purchase of new hospital equipment means that the management of such a process should be directed towards the satisfaction of the quality and safety requirements at the lowest possible price. In this sense, this study aims to address the incorporation processes of medical equipment in teaching hospitals: a case study at the University Hospital of Brasilia (HUB). The overall objective is to discuss the formal processes of incorporation of medical equipment in university and teaching hospitals in Brazil through the resources of the Program for Restructuring of Federal University Hospitals - REHUFE the HUB. The methodology applied to this study translates as a bibliographical and documentary research, qualitative, conducted for the purpose of analyzing the phenomenon lectured, trying to understand it through the collected considerations by renowned authors on the theme chosen by the related legislation, as well such as a case study represented by structured interviews applied to managers of the University Hospital of Brasília - HUB. It can be concluded that efficient management of equipment should be employed from acquisition to tracking the life cycle, based on criteria and protocols to obtain success in reducing costs and increasing benefits.

With the development of the Internet-of-Things, more and more IoT platforms come up with different structures and characteristics. Making balance of their advantages and disadvantages, we should choose the suitable platform in differ- ent scenarios. For this project, I make comparison of a cloud-based centralized platform, Microsoft Azure IoT hub and a fully distributed platform, Sensi- bleThings. Quantitative comparison is made for performance by 2 scenarios, messages sending speed adds up, devices lie in different location. General com- parison is made for security, utilization and the storage. Finally I draw the con- clusion that SensibleThings performs more stable when a lot of messages push- es to the platform. Microsoft Azure has better geographic expansion. For gener- al comparison, Microsoft Azure IoT hub has better security. The requirement of local device for Microsoft Azure IoT hub is lower than SensibleThings. The SensibleThings are open source and free while Microsoft Azure follow the con- cept “pay as you go” with many throttling limitations for different editions. Microsoft is more user-friendly.

IoT (Internet of Things) are devices which are usually equipped with different kinds of sensors, these sensor values are then sent to a server where these values are somehow processed. It’s predicted that the usage of IoT devices will increase significantly during the upcoming years.   Microsoft has a service named Azure IoT Hub, which is designed for easy administration of IoT devices, but Azure IoT Hub provides no user interface to administer these IoT devices. The task of this project is to create a user interface for Azure IoT Hub. / IoT (Internet of Things) är enheter som vanligtvis är utrustade med olika slags sensorer, dessa sensorvärden skickas sedan till en server där dessa värden på något sätt bearbetas. Det förutspås att användandet av IoT enheter kommer att öka signifikant under de kommande åren.   Microsoft har en tjänst som heter Azure IoT Hub, vilket är designat för att enkelt administrera IoT enheter, men Azure IoT Hub tillhandahåller inget gränssnitt för att kunna administrera dessa IoT enheter. Uppdraget för detta projekt var därför att skapa ett gränssnitt för Azure IoT Hub.

Die vorliegende Bachelorarbeit beschäftigt sich mit illegalen Zugriffen von Forschern auf die Schattenbibliothek Sci-Hub, im Zusammenhang zu Kündigungen von Zeitschriftenabonnements und -lizenzen an wissenschaftlichen Bibliotheken. Durch einen stetigen Anstieg der Kosten, sind viele Bibliotheken gezwungen diese zu kündigen. In dieser Arbeit wird auch eine Analyse der neueren Literatur zu diesen Themen vorgenommen. Die Forschungsfrage der Arbeit lautet wie folgt: „Gibt es einen Zusammenhang zwischen Entwicklungen in Nationalkonsortien und den entsprechenden nationalen Zugriffzahlen auf Sci-Hub?“. Dazu werden Daten betrachtet, die über die Nutzung von Sci-Hub im Jahr 2017 informieren. Untersucht werden die Länder Deutschland, Taiwan, die Niederlande und Luxemburg. Die Daten wurden auf einer MySQL-Datenbank gespeichert und von dort abgefragt; die Weiterverarbeitung der Zahlen erfolgte in Excel. In allen Ländern konnten im Zuge abgeschalteter Verlagszugänge steigende Zugriffszahlen auf Sci-Hub beobachtet werden, allerdings gab es Unterschiede bei der weiteren Nutzung, nachdem Wiedererlangen von lizensierten Zugängen an wissenschaftlichen Bibliotheken. Das Ergebnis zeigt, dass Forschende Sci-Hub hauptsächlich nutzen, da ihnen eine einfachere Möglichkeit des Zuganges zu benötigter Literatur zu fehlen scheint. Aber auch Bequemlichkeit und sinkende moralische Bedenken scheinen eine nicht unerhebliche Rolle zu spielen.:Abkürzungsverzeichnis Abbildungsverzeichnis 1. Einleitung 1.1. Hintergrund und Zielstellung der Arbeit 1.2. Methoden 1.2.1. Über die Daten 1.2.2. Bearbeitung der Daten 2. Bibliothekarische Ausgangssituation 2.1. Die Open-Access-Bewegung: Geschichte, aktueller Stand und Probleme 2.2. Sci-Hub: Entwicklung, Nutzung, Problematik und Diskussion 2.2.1 Allgemeine Informationen 2.2.2. Funktionsweise 2.2.3. Gerichtliches Vorgehen gegen Sci-Hub 2.2.4. Nutzergruppen 2.2.5. Diskussion in der Literatur 2.3. Bibliothekskonsortien als Mittel der Open-Access-Bewegung 2.4. Beteiligte Konsortien 2.4.1. Deutschland: Projekt DEAL 2.4.2. Taiwan: CONCERT 2.4.3. Niederlande: VNSU 2.4.4. Luxemburg: Consortium 3. Untersuchung 3.1. Zur Auswertung 3.2. Deutschland 3.3. Taiwan 3.4. Niederlande 3.5. Luxemburg 4. Diskussion 4.1. Diskussion der Forschungsfrage 4.2. Einschränkungen, Probleme und Ausblick 5. Schlusswort Literaturverzeichnis Selbstständigkeitserklärung Anhang

This work deals with the description of the communication using the VSAT satellite network. A used network topology, frequency bands, satellite orbits and also an access technology are defined. The next part is focused on the VSAT terminal, where the block diagram is shown. A model of the indoor unit IDU is designed in the system background of Ansoft Designer. Individual parts of the system model are analyzed in terms of input variables. The results of the simulation are shown. The curves of BER before Viterbi decoding and after Viterbi decoding are shown too.

Objective of the Master Thesis was to bring in two solutions of miniature PC display. One of them uses the VGA signal as the source of the data. The second uses USB for communication. Display using USB was chosen to be produced. Device contains LCD screen, SD card reader and audio DAC with mini speaker. Software running on the PC allows user to watch part of the screen of the computer. Position and size of the chosen part may be varied. The display may be controlled by touch screen. One part of the software running on PC is a simple video player.

Animals such as bees, ants, birds, fish, and others are able to efficiently perform complex coordinated tasks like foraging, nest-selection, flocking and escaping predators without centralized control or coordination. These complex collective behaviors are the result of emergence. Conventionally, mimicking these collective behaviors with robots requires researchers to study actual behaviors, derive mathematical models, and implement these models as algorithms. Since the conventional approach is very time consuming and cumbersome, this thesis uses an emergence-based method for the efficient evolution of collective behaviors. Our method, Grammatical Evolution algorithm for Evolution of Swarm bEhaviors (GEESE), is based on Grammatical Evolution (GE) and extends the literature on using genetic methods to generate collective behaviors for robot swarms. GEESE uses GE to evolve a primitive set of human-provided rules, represented in a BNF grammar, into productive individual behaviors represented by Behavior Tree (BT). We show that GEESE is generic enough, given an initial grammar, that it can be applied to evolve collective behaviors for multiple problems with just a minor change in objective function. Our method is validated as follows: First, GEESE is compared with state-of-the-art genetic algorithms on the canonical Santa Fe Trail problem. Results show that GEESE outperforms the state-of-the-art by a)~providing better solutions given sufficient population size while b)~utilizing fewer evolutionary steps. Second, GEESE is used to evolve collective swarm behavior for a foraging task. Results show that the evolved foraging behavior using GEESE outperformed both hand-coded solutions as well as solutions generated by conventional Grammatical Evolution. Third, the behaviors evolved for single-source foraging task were able to perform well in a multiple-source foraging task, indicating a type of robustness. Finally, with a minor change to the objective function, the same BNF grammar used for foraging can be shown to evolve solutions to the nest-maintenance and the cooperative transport tasks.