ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NV / In this paper we analyze fundamental local-area communication issues related to proximity operations around near-earth asteroids. We are motivated by NASA's plan to send robotic spacecraft to numerous such asteroids in the coming years in preparation for an eventual manned mission. We consider here the case where multiple probes are deposited on the surface of an asteroid and must communicate the data they collect to each other and to earth by using the orbiting `mothership' as a relay. With respect to this scenario, we statistically analyze the ability of surface probes in various locations to communicate with the mothership as well as their abilities to network with one another. For the purposes of this analysis, we assume the simplest possible communications scenario: a surface probe can communicate with the mothership only when it has an unobstructed line of sight. At the frequencies of interest here, line of sight is a necessary condition but it is obviously not sufficient - the end-to-end link margins of our communications system must be high enough to support the desired/required data rates. The work presented in this paper extends our previous research in which we only analyzed the visibility of the locations on the surface of the asteroid. Here, we consider how visibility affects the required communications bandwidth and buffer sizes for both surface-to-spacecraft and surface-to-surface scenarios.

ITC/USA 2012 Conference Proceedings / The Forty-Eighth Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2012 / Town and Country Resort & Convention Center, San Diego, California / In this paper we analyze fundamental local-area communication issues related to proximity operations around near-earth asteroids. We are motivated by NASA's plan to send robotic spacecraft to numerous such asteroids in the coming years in preparation for an eventual manned mission. We consider here the case where multiple probes are deposited on the surface of an asteroid and must communicate the data they collect to each other and to earth by using the orbiting `mothership' as a relay. With respect to this scenario, we statistically analyze the ability of surface probes in various locations to communicate with the mothership as well as their abilities to network with one another. For the purposes of this analysis, we assume the simplest possible communications scenario: a surface probe can communicate with the mothership only when it has an unobstructed line of sight. At the frequencies of interest here, line of sight is a necessary condition but it is obviously not sufficient - the end-to-end link margins of our communications system must be high enough to support the desired/required data rates. Nonetheless, this simplistic analysis represents the first step in characterizing the communication system requirement for the asteroid-local portion of the system.

Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-06-05T18:19:01Z No. of bitstreams: 2 maisa_costa_santos.pdf: 2334209 bytes, checksum: 9004aeaeb9cd7b271794191d109efa36 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-06-22T12:32:04Z (GMT) No. of bitstreams: 2 maisa_costa_santos.pdf: 2334209 bytes, checksum: 9004aeaeb9cd7b271794191d109efa36 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-06-22T12:32:04Z (GMT). No. of bitstreams: 2 maisa_costa_santos.pdf: 2334209 bytes, checksum: 9004aeaeb9cd7b271794191d109efa36 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2016 / Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG) / O presente estudo descreve a s?ntese do catalisador heterog?neo SiO2-SO3H, obtido atrav?s da imobiliza??o dos grupos sulf?nicos em SiO2, produzida a partir de uma mistura contendo ?rea de constru??o e carbonato. A imobiliza??o do -SO3H foi confirmada, atrav?s da caracteriza??o inicial da s?lica e do catalisador por IV, MEV, DRX, TGA e isotermas de adsor??o/dessor??o BET, que demonstrou haver modifica??o da estrutura da s?lica ap?s a imobiliza??o dos grupos sulf?nicos, ocasionando diminui??o da ?rea superficial espec?fica (SBET) de 507 para 115 m2 g?1, e uma diminui??o do volume dos poros 0,78 para 0,38 cm3 g-1. Inicialmente, avaliou o desempenho catal?tico da mistura SiO2-SO3H em rea??es de esterifica??o do ?cido ac?tico e do ?cido graxo (octan?ico) com o 2,2-dimetil-1,3-dioxolano-4-metanol, conhecido como ?solketal?, que possui uma cadeia carb?nica grande, al?m de ter outro grupo funcional na sua estrutura. Os resultados obtidos demonstram a efici?ncia do SiO2-SO3H para a s?ntese do acetato 2,2- dimetil-1,3-dioxolan-4-il metil, em que utilizou-se inicialmente, como reagentes, glicerol bruto, acetona e a mistura catal?tica, ap?s 2 hora de rea??o, foi adicionado no mesmo reator, o ?cido ac?tico em um processo ?one pot?, sem a pr?via extra??o e a purifica??o do solketal (reagente intermedi?rio). Pelo o mesmo procedimento, foi obtido, em excelente rendimento, o octanoato de solketila. Nesses processos reacionais n?o houvera a necessidade do uso de solvente ou aparelhos auxiliares, como clevenger ou dean-stark, para remo??o da ?gua formada durante o processo que envolve 2 rea??es (cetaliza??o e esterifica??o), sendo dessa forma resistente ao processo de lixivia??o. Diante dos excelentes resultados, partiu para rea??es de esterifica??o com outros ?cidos graxos, com at? 18 ?tomos de carbono na cadeia, tais como o ?cido linoleico e oleico. Contudo n?o foi observado a forma??o de produtos nessas rea??es. Acredita-se que esse fato esteja relacionado com a grande afinidade que o solketal apresenta pelo SiO2-SO3H, devido a sua alta polaridade, fazendo com que fique retido dentro dos poros do catalisador. Outro ponto importante foi o tamanho da cadeia carb?nica dos ?cidos graxos utilizados, visto que quanto maior o tamanho da mol?cula, maior a hidrofobicidade, isso faz com que eles sofram repuls?o do catalisador. Acredita-se que esses dois fatores contribu?ram para que n?o ocorresse a intera??o entre os reagentes e o catalisador, levando, em alguns casos, ? forma??o de ?steres de solketila com rendimentos moderados. Essa hip?tese foi comprovada, quando utilizou-se um ?lcool de cadeia carb?nica menor, como o metanol, o qual reagiu com o ?cido linoleico e oleico na presen?a da mistura catal?tica SiO2-SO3H, para produ??o de ?steres met?licos. Os resultados obtidos comprovam a s?ntese do oleato de metila e do linoleato de metila no tempo de 15 min, com rendimento em torno de 96 a 98%. Isso demonstrou que ? de fundamental import?ncia o escoamento dos reagente para os poros do catalisador. O que sugere que para garantir o sucesso das rea??es do solketal com ?cidos de cadeia carb?nica maior o escoamento desse reagentes devem ser facilitado e isso pode ser obtido atrav?s do uso de solvente. / Disserta??o (Mestrado) ? Programa de P?s-gradua??o em Biocombust?veis, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / The synthesis of the heterogeneous SiO2-SO3H, catalyst, obtained by the immobilization of the sulfonic groups in SiO2, produced from a mixture containing building and carbonate. The immobilization of -SO3H was confirmed, through the initial characterization of the silica and the catalyst by IV, SEM, XRD, TGA and adsorption / desorption isotherms, which showed that there was modification of the silica structure after the immobilization of the sulfonic groups, resulting in a decrease of the specific surface area (SBET) from 507 to 115 m2 g-1, and decreasing in volume by 0,78 to 0,38 cm3 g-1. Initially, evaluated the catalytic performance of the SiO2 -SO3H mixture in esterification reactions of acetic acid and fatty acid (octanoic acid) with 2,2-dimethyl-1,3-dioxolane-4-methanol, known as "solketal", it has a large carbon chain, plus another functional group in its structure. The results obtained demonstrate the efficiency of SiO2 -SO3H for the synthesis of 2,2-dimethyl-1,3-dioxolan-4-yl methyl acetate, at where initially used as reagents, crude glycerol, acetone and the catalytic mixture, after 2 hour of reaction, was added in the same reactor, acetic acid in a "one pot", without prior extraction and purification of the solketal (intermediate reagent). By the same procedure, it was obtained, in excellent yield, solketila octanoate. In these reaction processes there was no need for the use of solvents or auxiliary devices, such as clevenger or dean-stark, for the removal of water formed during the process involving 2 reactions (ketalization and esterification), thus being resistant to the leaching process. Given the excellent results, started to esterification reactions with other fatty acids, with up to 18 carbon atoms in the chain, such as linoleic and oleic acid. However, the formation of products in these reactions was not observed. It is believed that this fact is related to the great affinity that the solketal presents by the SiO2-SO3H, due to its high polarity, causing it to be trapped within the catalyst pores. Another important point was the size of the carbonic chain of the fatty acids used, since the larger the size of the molecule, the greater the hydrophobicity, this causes them to undergo catalyst repulsion. It is believed that these two factors contributed to the lack of interaction between the reactants and the catalyst, leading in some cases to the formation of solketila esters with moderate yields. This hypothesis has been proven, used a lower carbon alcohol, such as methanol, which reacted with linoleic and oleic acid in the presence of the catalytic mixture SiO2 -SO3H, for the production of methyl esters. The results obtained demonstrate the synthesis of methyl oleate and methyl linoleate in the 15 min time, with yield around 96 to 98%. This has demonstrated that it is of fundamental importance the flow of the reactants into the pores of the catalyst. This suggests that to ensure the success of solketal reactions with higher carbonic acids the flow of these reagents should be facilitated and this can be obtained through the use of solvente.

Made available in DSpace on 2014-12-17T14:00:21Z (GMT). No. of bitstreams: 1 MauricioMM_DISSERT.pdf: 2618305 bytes, checksum: 86b2d07eabb54aa9e3996db11849fcf2 (MD5) Previous issue date: 2014-03-21 / This paper proposes a reflection on the body between/bodies, especially in contemporary dance, in their path that starts from the choreographic construction, permeating the body of the choreographer, the dancer s body and when fulfills themselves as artistic expression, the body of the spectator. Initially discusses the body in dance as a body/space for convergence, connectedness and continuity, from the thought of the Greek philosopher Epicurus of Samos, in dialogue with the thought of Maurice Merleau-Ponty, Gilles Deleuze and Jos? Gil. Reflect about the creation of this body/space in the relationship choreographer/dancer using as connecting thread the experiences of the author in his artistic path. Finally describes the process of creating the scenic experiment (h)?poros, which constitutes the practice scene of this dissertation, having as main objective the creation of spaces of convergence and interaction between a proponent and an affluent body that, in this move, transforms itself and the space that now cohabits / is / Esta disserta??o prop?e uma reflex?o a respeito do corpo entre/corpos, em especial na dan?a contempor?nea, neste seu trajeto que tem inicio na constru??o coreogr?fica, perpassando o corpo do core?grafo, o corpo do bailarino e, ao realizar-se como manifesta??o art?stica, o corpo do espectador. Inicialmente discute o corpo na dan?a como corpo/espa?o de converg?ncia, conexidade e continuidade, a partir do pensamento do fil?sofo grego Epicuro de Samos, em di?logo com o pensamento de Maurice Merleau-Ponty, Gilles Deleuze e Jos? Gil. Reflete a cria??o deste corpo/espa?o na rela??o core?grafo/bailarino utilizando como fio condutor as experi?ncias do autor em seu trajeto art?stico. Por fim relata o processo de cria??o do experimento c?nico (h)?poros, que se configura como pr?tica da cena desta disserta??o, tendo como objetivo fundamental a cria??o de espa?os de converg?ncia e intera??o entre um corpo propositor e um corpo afluente que, neste mover-se, transforma a si e ao espa?o que agora coabita/constitui

Made available in DSpace on 2014-12-17T14:08:47Z (GMT). No. of bitstreams: 1 VerushkaSML_DISSERT.pdf: 2610302 bytes, checksum: 15f9dcee57e4dd025cfdc5dd4c655a36 (MD5) Previous issue date: 2011-08-02 / Among the different types of pollutants typically attributed to human activities, the petroleum products are one of the most important because of its toxic potential. This toxicity is attributed to the presence of substances such as benzene and its derivatives are very toxic to the central nervous system of man, with chronic toxicity, even in small concentrations. The area chosen for study was the city of Natal, capital of Rio Grande do Norte, where samples were collected in six different areas in the city, comprising 10 wells located in the urban area, being carried out in three distinct periods March/2009, December / June/2010 and 2009, and were evaluated for contamination by volatile hydrocarbons (BTEX - benzene, toluene, ethylbenzene and xylenes), so this work aimed to assess the quality of groundwater wells that supply funding for public supply and trade in the urban area of the city of Natal, in Rio Grande do Norte, contributing to the environmental assessment of the municipality. The analysis of BTEX in water was performed according to EPA Method 8021b. Was used the technique of headspace (TriPlus TP100) coupled to high resolution gas chromatography with selective photoionization detector (PID) and flame ionization (FID) - model Trace GC Ultra, Thermo Electron Corporation brand. The procedure adopted allowed the detection of concentrations of the order of μg.L-1. Data analysis with respect to BTEX in groundwater in the area monitored so far, shows that water quality is still preserved, because it exceeds the limits imposed by the potability Resolution CONAMA N?. 396, April 2008 / Dentre os diferentes tipos de poluentes tipicamente atribu?dos ?s atividades humanas, os produtos de petr?leo s?o um dos mais relevantes em raz?o de seu potencial t?xico. Esta toxicidade ? atribu?da ? presen?a de subst?ncias como benzeno e seus derivados que s?o muito t?xicos ao sistema nervoso central do homem, apresentando toxicidade cr?nica, mesmo em pequenas concentra??es. A ?rea escolhida para estudo foi o munic?pio de Natal, capital do estado do Rio Grande do Norte, onde foram coletadas amostras em 6 diferentes zonas no munic?pio, compreendendo 10 po?os localizados na zona urbana, sendo realizadas em 3 per?odos distintos mar?o/2009, dezembro/2009 e junho/2010; e foram avaliadas a contamina??o por hidrocarbonetos vol?teis (BTEX benzeno, tolueno, etilbenzeno e os xilenos), portanto este trabalho, teve como principal objetivo, avaliar a qualidade das ?guas subterr?neas que abastecem alguns po?os de capta??o destinados ao abastecimento p?blico e comercial, na regi?o urbana do munic?pio de Natal, no Estado do Rio Grande do Norte, contribuindo para o diagn?stico ambiental do munic?pio. A an?lise de BTEX em ?gua foi realizada de acordo com o m?todo EPA 8021b. Foi utilizada a t?cnica de headspace (TriPlus TP100) acoplado ? cromatografia gasosa de alta resolu??o com detector seletivo de fotoioniza??o (PID) e ioniza??o em chama (FID) - modelo Trace GC Ultra, marca Thermo Electron Corporation. O procedimento adotado permitiu a detec??o de concentra??es da ordem de μg.L-1. A an?lise dos dados com rela??o aos BTEX nas ?guas subterr?neas, no dom?nio monitorado at? este momento, mostra que a qualidade da ?gua ainda est? preservada, pois n?o ultrapassa os limites de potabilidade impostos pela Resolu??o CONAMA n? 396 de abril de 2008

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-06-14T20:00:48Z No. of bitstreams: 1 LeilaAraujoGuilhermino_DISSERT.pdf: 148421796 bytes, checksum: d73a6672270a0a19a50c23ae940577da (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-06-15T23:15:44Z (GMT) No. of bitstreams: 1 LeilaAraujoGuilhermino_DISSERT.pdf: 148421796 bytes, checksum: d73a6672270a0a19a50c23ae940577da (MD5) / Made available in DSpace on 2016-06-15T23:15:44Z (GMT). No. of bitstreams: 1 LeilaAraujoGuilhermino_DISSERT.pdf: 148421796 bytes, checksum: d73a6672270a0a19a50c23ae940577da (MD5) Previous issue date: 2015-06-25 / Esta disserta??o dedica-se ? discuss?o sobre as atmosferas arquitet?nicas, usando-se como refer?ncia para a an?lise as obras e os relatos do arquiteto su??o Peter Zumthor. O termo "atmosfera arquitet?nica" ? definido no estudo como a condi??o complexa e gen?rica percebida pelo usu?rio no momento da experiencia??o de um dado lugar. A composi??o de uma atmosfera se d? pela sobreposi??o de todas as caracter?sticas f?sicas que comp?em um espa?o, e sua percep??o, condicionada a aspectos individuais do usu?rio, se concretiza por todos os receptores do corpo humano, por meio de um processo multissensorial, e influencia qualitativamente a experiencia??o dos espa?os constru?dos pela arquitetura. O estudo compreende tr?s cap?tulos. No primeiro deles, apresenta-se uma reflex?o sobre o tema atmosferas arquitet?nicas, passando pela forma??o do conceito e sua defini??o como tamb?m por uma compila??o de princ?pios projetuais que levam ? composi??o de atmosferas arquitet?nicas em obras de profissionais diversos. No segundo cap?tulo, realiza-se um estudo sobre os procedimentos adotados por Peter Zumthor em seu processo projetual, focado na composi??o de atmosferas. No terceiro, por fim, s?o analisados os projetos da Capela do Irm?o Claus (Wachendorf, Alemanha) e do Museu Kolumba (Col?nia, Alemanha), ambos de autoria desse arquiteto, procurando-se entender o complexo jogo de elementos que constituem a atmosfera de cada um desses lugares. A metodologia aplicada para todo o estudo consiste em an?lise bibliogr?fica e documental, usando-se como fontes livros, plantas e material coletado na internet. Al?m disso, para as an?lises das obras, contou-se tamb?m com a experi?ncia da visita??o aos edif?cios pela pr?pria autora desta disserta??o. Como conclus?o, o estudo permite perceber como a arquitetura, expressa por meio de seus objetos edificados, pode estar dotada de todo um arcabou?o conceitual e te?rico que a valoriza e enriquece a experi?ncia de sua visita??o, quando concebida com fins de emocionar o usu?rio. Trata-se de uma abordagem que utiliza os mesmos elementos de qualquer constru??o, mas que se diferencia pelos v?nculos que demanda com o homem e com o meio em que se implanta. Face aos novos rumos reconhecidos para a arquitetura contempor?nea, a contribui??o deste estudo est? na oportunidade de se compreender essa forma peculiar de rela??o entre usu?rio e objeto arquitet?nico, identificada por uma vis?o fenomenol?gica da arquitetura, bem como de atualizar a bibliografia sobre a tem?tica, ainda escassa nas universidades brasileiras. / This thesis will discuss the topic architectural atmospheres, based on Peter Zumthor's works and narrative. The subject "architectural atmospheres" is defined in the study as the "complex and general condition, realized by the user during the experience of a place". Atmospheres are composed of the overlap of all physical qualities that compound a space and its perception, conditioned by individual issues of the user. The atmosphere is realized through all human body receivers, in a multi-sensorial process, and affects qualitatively the spacial experience of the places created by architecture. The study has three chapters. The first chapter is a reflection on the issues that architectural atmospheres present. It passes through the concept and definition of the subject and includes a compilation of design principles that act on the architectural atmosphere composition in a variety of projects by a range of professionals. In the second chapter, the procedures adopted by Peter Zumthor in his design process that focus on atmosphere composition are studied. In the third and last chapter, Brother Claus Chapel (Wachendorf, German) and Kolumba Museum (Colon, German) projects, both by Peter Zumthor, are analyzed, in order to comprehend the complex role of elements that constitute the architectural atmosphere of each of these places. The methodology used throughout the thesis consists of bibliography and documental analysis, based on books, plans and material searched on Internet. Furthermore, the project analysis counted with the personal experience of the author of this thesis upon visiting the studied buildings. Finally, in conclusion, it is realized that when architecture is made in order to touch the user, expressed by its built objects, it can be provide a vast conceptual and theoretical basis that valorizes and enriches the experience of its use. It (the architectural atmosphere) is related to an approach that uses the same elements of any other construction, but distinguishes itself by the connections that it implies with humans and its environment. In the face of new patterns unveiled for contemporary architecture, this study contribution is based around the opportunity to understand this particular relationship between user and architectural object, identified as a phenomenological approach of architecture, as well as to update the subject bibliography, still scarce among Brazilian universities.

Made available in DSpace on 2014-12-17T15:12:14Z (GMT). No. of bitstreams: 1 LuizFFT_DISSERT.pdf: 593620 bytes, checksum: 2f6a1d3eebe83f51485822720c0da940 (MD5) Previous issue date: 2010-04-16 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Became a little more than half century ago that has been consolidated the also called philosophy of comparative edge, by which was possible exploited new ways of thought, since the dialogue between West and East. This fructiferous cooperation between-edges, by which possibilities has been ramifies in lots of different areas of knowledge, has a common birthplace: the talk between Heidegger and the Japanese from the also called Kyoto School of Philosophy. The intention of this mastering degree s dissertation is show, since Heidegger s thought and the contemporary Japanese philosophy, the theoric viability of such trade of experiences between westerns and easterns in philosophy. / H? pouco mais de meio s?culo atr?s se consolidou a chamada filosofia das fronteiras ou limites comparados, por meio da qual foi poss?vel explorar novos caminhos para o pensamento desde o di?logo entre Ocidente e Oriente. Esta frut?fera coopera??o entrefronteiras, cujas possibilidades se ramificaram em diversas ?reas do conhecimento, possui um ber?o comum: a conversa travada entre Heidegger e os japoneses da chamada Escola de Filosofia de Quioto. A inten??o dessa disserta??o de mestrado ? evidenciar, a partir do pensamento de Heidegger e da filosofia japonesa contempor?nea, a viabilidade te?rica de tal troca de experi?ncias entre ocidentais e orientais no ?mbito da filosofia.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-20T21:26:31Z No. of bitstreams: 1 CarolinaCosta_DISSERT.pdf: 78622460 bytes, checksum: 8635f966b4b5fb74d1db7ab32aa51140 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-02-23T21:04:39Z (GMT) No. of bitstreams: 1 CarolinaCosta_DISSERT.pdf: 78622460 bytes, checksum: 8635f966b4b5fb74d1db7ab32aa51140 (MD5) / Made available in DSpace on 2017-02-23T21:04:39Z (GMT). No. of bitstreams: 1 CarolinaCosta_DISSERT.pdf: 78622460 bytes, checksum: 8635f966b4b5fb74d1db7ab32aa51140 (MD5) Previous issue date: 2012-03-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Este trabalho estuda exemplares da produ??o arquitet?nica contempor?nea nordestina que aparentam aproximar-se das tend?ncias p?s-modernas, discutidas entre as d?cadas de 1960 e 1980 nos pa?ses de Primeiro Mundo. A fonte-base desta pesquisa foram os peri?dicos nacionais (Revistas AU e Projeto). Foram encontrados 205 projetos realizados no Nordeste entre os anos de 1985 e 2000, dentre os quais foram identificados e selecionados v?rios projetos para ilustrar o estudo. A inten??o da pesquisa ? de compreender a produ??o arquitet?nica no Nordeste nesta ?poca, verificando como a tend?ncia internacional foi interpretada e se realiza na arquitetura produzida. / The present dissertation reviews samples of northeastern Brazil contemporary architectural production that shows signs of being closer to the post-modern tendencies, discussed between the 1960?s and 1980?s in First World countries. The research used as base resource the national periodicals AU and Projeto Magazines in which were found 205 projects in the region between 1985 and 2000, among which several projects were identified and selected to illustrate the study. The purpose of this research is to understand the architectural production in the Northeast at this time period, analyzing how the international tendency has been interpreted and appears in the architecture produced.

Submitted by Programa de P?s-Gradua??o Engenharia El?trica (ppgee@ifpb.edu.br) on 2018-04-17T13:17:23Z No. of bitstreams: 1 39- Manoella Maria Saraiva Cavalcante - APLICA??O DA AN?LISE DE COMPONENTES PRINCIPAIS NA IDENTIFICA??O DE TIPOS SANGU?NEOS EM TUBOS DE ENSAIOS.pdf: 2468795 bytes, checksum: e236819312fbb0b007979732c79306f9 (MD5) / Approved for entry into archive by Programa de P?s-Gradua??o Engenharia El?trica (ppgee@ifpb.edu.br) on 2018-04-17T13:18:50Z (GMT) No. of bitstreams: 1 39- Manoella Maria Saraiva Cavalcante - APLICA??O DA AN?LISE DE COMPONENTES PRINCIPAIS NA IDENTIFICA??O DE TIPOS SANGU?NEOS EM TUBOS DE ENSAIOS.pdf: 2468795 bytes, checksum: e236819312fbb0b007979732c79306f9 (MD5) / Made available in DSpace on 2018-04-17T13:18:50Z (GMT). No. of bitstreams: 1 39- Manoella Maria Saraiva Cavalcante - APLICA??O DA AN?LISE DE COMPONENTES PRINCIPAIS NA IDENTIFICA??O DE TIPOS SANGU?NEOS EM TUBOS DE ENSAIOS.pdf: 2468795 bytes, checksum: e236819312fbb0b007979732c79306f9 (MD5) Previous issue date: 2017-08-10 / A tipagem sangu?nea ? processo fundamental para a realiza??o de uma transfus?o. As incompatibilidades numa transfus?o sangu?nea podem levar a consequ?ncias graves, como rea??es hemol?ticas agudas, e em casos extremos levar ? morte do paciente. Uma correta tipagem mostra-se assim indispens?vel para uma transfus?o segura. O processo de tipagem sangu?nea pode ser realizado por m?todos manuais, contudo, possuem alguma subjetividade uma vez que a classifica??o depende da inspe??o visual do t?cnico que efetua o teste, o que leva a erros humanos. Esta disserta??o prop?e um sistema que seja capaz de identificar a tipagem sangu?nea por meio de processamento de imagens de tubo de ensaio. O sistema proposto realiza primeiro a identifica??o da regi?o circular do tubo de ensaio, com elimina??o das partes que n?o cont?m a mistura do sangue com o reagente e, logo em seguida, realizase uma metodologia dividida em duas fases: a primeira fase realiza a identifica??o do tipo sangu?neo a partir da extra??o do canal azul e uso do limiar de desvio padr?o para a classifica??o das amostras; a segunda fase realiza a implementa??o do algoritmo para a determina??o do tipo sangu?neo pela An?lise de Componentes Principais identificando a regi?o que ocorreu a aglutina??o, comparando seus resultados com os obtidos na primeira fase. Foram analisadas 65 amostras em ambas as fases, sendo poss?vel mostrar que o algoritmo baseado na PCA forneceu uma acur?cia de 87,69% para o fator Rh e de 60% para o Sistema ABO. Utilizando a t?cnica da extra??o do canal azul, a pesquisa obteve uma acur?cia de 90,77% no fator Rh e de 64,62% para o sistema ABO.

The feasibility of relocating a small (~500,000 kg) Near-Earth Asteroid (NEA) to High Earth Orbit via Solar Electric Propulsion (SEP) is evaluated with the orbital simulation software General Mission Analysis Tool (GMAT). Using prior research as a basis for the mission parameters, a retrieval mission to NEA 2008 HU4 is simulated in two parts: approach from Earth and return of the Asteroid Redirect Vehicle (ARV) with the asteroid in tow. Success of such a mission would pave the way for future missions to larger NEAs and other deep space endeavors. It is shown that for a hypothetical launch time of 24 May 2016, the ARV could arrive within 25 km of 2008 HU4 on 28 Jun 2017 with a Delta V of 0.406 km/s, begin return maneuver on 08 Dec 2017 and reach Earth altitude of 450,000 km by 23 Apr 2026 with a Delta V of 44.639 m/s.