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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
171

Express?o estrutural do lineamento transbrasiliano na por??o sul da Bacia do Parna?ba

Santos, Carla Hemillay de Oliveira 20 March 2017 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-06-02T21:22:08Z No. of bitstreams: 1 CarlaHemillayDeOliveiraSantos_DISSERT.pdf: 16950833 bytes, checksum: 39022e846c49b3e773761c0174767be0 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-06-06T22:54:54Z (GMT) No. of bitstreams: 1 CarlaHemillayDeOliveiraSantos_DISSERT.pdf: 16950833 bytes, checksum: 39022e846c49b3e773761c0174767be0 (MD5) / Made available in DSpace on 2017-06-06T22:54:54Z (GMT). No. of bitstreams: 1 CarlaHemillayDeOliveiraSantos_DISSERT.pdf: 16950833 bytes, checksum: 39022e846c49b3e773761c0174767be0 (MD5) Previous issue date: 2017-03-20 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / O Lineamento Transbrasiliano (LTB) apresenta dire??o NE-SW e extens?o de mais de 2.700km em territ?rio brasileiro. Cerca de 900km do LTB ocorrem no substrato pr?-cambriano da Bacia do Parna?ba (BPar), inferido a partir de dados geol?gicos e geof?sicos como uma zona de cisalhamento pl?stica com cinem?tica transcorrente dextral, fei??o corroborada nas exposi??es do embasamento cristalino no NW do Cear? e leste do Tocantins. Na bacia propriamente dita, a reativa??o do LTB se expressa em superf?cie como feixes de lineamentos NE que correspondem a falhas ou fraturas, interceptando as unidades paleozoicas a tri?ssicas da BPar. Este trabalho aborda a assinatura estrutural e idade de reativa??es do LTB na regi?o sul da bacia, a leste de Palmas (regi?o fronteiri?a entre os estados do Tocantins, Maranh?o e Piaui). No embasamento cristalino, a cinem?tica dextral do LTB envolve um est?gio tardio com cinem?tica tamb?m dextral de baixa temperatura (d?ctil-fr?gil), com prov?vel idade ediacarana-cambriana, como observado no NW do Cear?. Nas unidades litoestratigr?ficas da BPar, s?o distinguidos eventos de reativa??o em regime fr?gil ou hidropl?stico (fraturas e bandas de deforma??o). Nesta regi?o de estudo, um evento mais antigo registra uma cinem?tica transcorrente sinistral expressa principalmente como bandas de deforma??o e falhas de escala meso a macrosc?pica, com dire??o NE, combinadas com estruturas obl?quas, dilatacionais (incluindo juntas e falhas normais) ou conjugadas/antit?ticas de rejeito direcional ou obl?quo, com orienta??es que variam de NNE a NNW, observadas nos litotipos das forma??es Samba?ba, Pedra de Fogo e mais antigas. A SE de Alto Parna?ba (MA), s?o destacadas as estruturas em flor que envolvem fei??es de espessamento de camadas na Forma??o Pedra de Fogo, atestando atividade tect?nica sindeposicional durante o Neopermiano. Um segundo conjunto de estruturas s?o falhas normais associadas a uma distens?o N/NNE, impressas nos corpos b?sicos de idade eojur?ssica da Su?te Mosquito, e unidades mais antigas. Essa su?te magm?tica ? capeada, a sul de Lizarda (TO), por arenitos e conglomerados com seixos das vulc?nicas, correlacionados ? Forma??o Corda. Um terceiro conjunto de estruturas, caracterizado por falhas normais ou normais obl?quas com dire??o NE, registra distens?o NW tamb?m observada na borda leste/SE da BPar, sendo associada ao evento de rifteamento da Margem Leste brasileira, durante o Eocret?ceo. Essas reativa??es do LTB n?o afetam o Grupo Urucuia, uma unidade da Bacia do Espig?o Mestre que ocorre na regi?o do Jalap?o. Finalmente, um quarto evento, de ocorr?ncia mais restrita, reflete distens?o NE e est? tamb?m registrado em arenitos correlacionados ao Grupo Urucuia, implicando para ambos uma idade m?xima neocret?cea. / The Transbrasiliano lineament (LTB) is a NE-SW trending shear zone, with length of over 2700km in the brazilian territory. About 900km of the LTB occur in the precambrian basement of the Parna?ba Basin (BPar), inferred as a plastic shear zone with dextral strike-slip kinematics, on the basis of geological and geophysical data, as well as field observations in NW of Cear? and eastern Tocantins states. In the basin itself, reactivation of the LTB is expressed at the surface by NE-trending lineaments which correspond to faults or fractures intercepting paleozoic to triassic units of BPar. This dissertation addresses the structural signature and age of reactivations of the LTB in the southern region of the basin, east of Palmas (border region between Tocantins, Maranh?o and Piaui states). In the crystalline basement, the dextral kinematics of LTB also displays a late, low temperature stage, probabbly of Ediacaran-Cambrian age, like observed at Northwest Cear? state. In the BPar lithostratigraphic units, reactivation events under brittle or hydroplastic conditions are recognized. In the studied region, an older event displays a sinistral transcurrent kinematics expressed as NE-trending deformation bands and faults of meso to macroscale, combined with oblique slip structures, either dilatational (including joints and normal faults) or conjugate/antithetic strike-slip or oblique slip-structures. Their orientations range from NNE to NNW, being observed in the Samba?ba, Pedra de Fogo and older formations. SE of Alto Parna?ba (Maranh?o State), remarkable flower structures controling strata-thickening in Pedra de Fogo Formation attest syndepositional tectonic activity during the Neopermian. A second set of structures are extensional joints or oblique slip and normal faults associated with a N/NNE extension, overprinted in the eojurassic basic rocks of the Mosquito Suite and older units. Volcanogenic sandstones correlated to the Corda Formation overly basic sills south of Lizarda. A third set of structures, characterized by NE-trending normal or normal-oblique slip faults reflect a NW extension also observed along the eastern border of BPar, being correlated to the rifting event in the Brazilian Eastern Margin during the Eocretaceous. Finally, a fourth event, with more restrict occurrence, involves NE extension, being also observed in the Urucuia Group sandstones, sugesting a Neocretaceous age for both.
172

Estudo da express?o dos genes do metabolismo do ?cido f?lico e associa??o com o desenvolvimento de fendas orais

Soares, Cl?lio Diogo 30 August 2012 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-10-04T21:05:45Z No. of bitstreams: 1 ClelioDiogoSoares_DISSERT.pdf: 3089611 bytes, checksum: d4a3b5a01c7dc8a828197d92e650d07e (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-10-11T22:38:17Z (GMT) No. of bitstreams: 1 ClelioDiogoSoares_DISSERT.pdf: 3089611 bytes, checksum: d4a3b5a01c7dc8a828197d92e650d07e (MD5) / Made available in DSpace on 2017-10-11T22:38:17Z (GMT). No. of bitstreams: 1 ClelioDiogoSoares_DISSERT.pdf: 3089611 bytes, checksum: d4a3b5a01c7dc8a828197d92e650d07e (MD5) Previous issue date: 2012-08-30 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Introdu??o: H? evidencias consider?veis sugerindo que genes relacionados ao metabolismo do folato possuem um papel importante na etiologia das fendas orofaciais. A express?o de genes que possam estar ligados ?s fendas orais requer a presen?a de apropriadas causas ambientais em combina??o com fatores gen?ticos que culminam com a falha na fus?o dos processos faciais. Objetivo: Realizar estudo de associa??o da express?o dos genes da via do metabolismo do acido f?lico - MTHFR, MTR, RFC1, MTRR, com a ocorr?ncia das fendas orais. Metodologia: Foram estudados 50 filhos casos e suas respectivas m?es, e 50 indiv?duos controles e suas respectivas m?es. Inicialmente foram realizadas as an?lises bioqu?micas (Glicose, ALT, AST, Creatinina, Folato, Vitamina B12, Homociste?na), hematol?gicas (hemoglobina, hemat?crito, contagem de hem?cias, os ?ndices hematol?gicos, VCM, HCM e CHCM) e estudo de suas caracter?sticas cl?nicas. Para a realiza??o do estudo de express?o g?nica foi extra?do o RNA total a partir das c?lulas do sangue perif?rico, o qual foi quantificado e analisado quanto a sua pureza e integridade e encaminhado para a obten??o do cDNA a ser utilizado para o estudo de express?o utilizando ensaios pr?-desenhados. Finalmente foi avaliada a influ?ncia de determinados gen?tipos (MTRR A66G; MTHFR C677T; MTHFR A1298C; MTR A2756G; RFC1 A80G) sobre a express?o de RNAm dos respectivos genes estudados. A an?lise estat?stica dos dados foi realizada considerando o n?vel de signific?ncia de 95% (P<0,050) Resultados: Foi evidenciada a presen?a do consumo de ?lcool como fator de risco significativo presente para as m?es caso (P=0,001). Em rela??o as dosagens bioqu?micas n?o foram observadas diferen?as significativas entre os casos e respectivos controles os quais apresentaram valores de AST, ALT e creatinina dentro dos valores de refer?ncia. A dosagem de ?cido f?lico apresentou-se reduzida significativamente para o grupo dos filhos caso (P=0,010) e para suas m?es (P=0,001). Na an?lise hemat?logica n?o foram observadas altera??es em nenhum dos par?metros avaliados como hemoglobina, hemat?crito, contagem de hem?cias, os ?ndices hematol?gicos, VCM, HCM e CHCM dentre os grupos avaliados. A avalia??o da express?o g?nica para o grupo das m?es caso mostrou uma redu??o significativa na express?o do RNAm em todos os genes avaliados: para o gene da metionina sintase (MTR, p=0,008), da metionina sintase redutase (MTRR, p=0,015), do RFC1 (P=0,004) e da MTHFR (P=0,017) comparados com o grupo de m?es controle. No grupo de filhos fissurados, houve uma redu??o significativa na express?o do RNAm para os genes da metionina sintase (MTR, p=0,010) e da metionina sintase redutase (MTRR, p=0,034). Para a an?lise da influencia dos gen?tipos na express?o observou-se que o gen?tipo recessivo (CC) para o polimorfismo A1298C do gene MTHFR poderia estar associada a uma redu??o da express?o de seu RNAm. Conclus?o: Genes do metabolismo de folato relacionados s?o reduzidamente expressos em ambos os grupos caso deste estudo, uma vez que todos os quatro genes (RFC1, MTHFR, MTR, MTR), estavam reduzidos nas m?es e dois genes (MTR, MTRR) em seus filhos. A redu??o da express?o desses genes representa um aumento do risco associado com a presen?a de fendas orais nestes indiv?duos. / Introduction: There is considerable evidence suggesting that folate-related genes play a role in the etiology of oral facial clefts. Clefts are known to have a strong genetic component. The expression profile of genes involved on the pathway and folic acid metabolism which is linked to oral clefts requires appropriate environmental causes in combination with genetic factors that culminate in the failure of fusion of facial processes. Objective: The objective is to perform the association of differential gene expression of folate metabolism genes (MTHFR, MTR, RFC1, MTRR) with the occurrence of oral clefts. Methods: We studied 50 subjects with oral clefts and their mothers, and 50 individuals absent of oral clefts and their mothers, totaling 100 individuals referred cases and 100 controls respectively. For gene expression study, total RNA was extracted from peripheral blood cells, then it was quantified and analyzed for purity by absorbance relation and integrity in MOPS gel. The mRNA samples with good purity and integrity were transcribed to cDNA using reverse transcription kit. The cDNA was used in pre-designed gene expression assays. In a previous study performed by our group were evaluated by PCR-RFLP the MTRR A66G, MTHFR C677T, MTHFR A1298G, MTR A2756G, RFC1 A80G polymorphisms, in this study we evaluated the influence of these polymorphisms on gene expression. It was also performed biochemical, hematological analyzes and a clinical characteristics study of these individuals. We performed statistical analysis considering the significance level of 95% (P <0.050) Results: The consumption of Alcohol was reported as a significant risk factor for the present case mothers (p = 0.001). Regarding the biochemical there were no significant differences between children cases group and their controls which had values of AST, ALT and creatinine within the reference values. The folic acid dosage presented significantly reduced in case mothers group (P = 0.011). In haematological analysis was not observed significant changes in any of the evaluated parameters such as hemoglobin, hematocrit, erythrocyte count, and hematological indices, MCV, MCH and MCHC among the groups. The assessment of gene expression for case mother group showed a significant reduction in mRNA expression in all evaluated genes; for the methionine synthase gene (MTR, p = 0.008), the methionine synthase reductase (MTRR, p = 0.015), the reduced folate carrier 1 (RFC1, P= 0.004) and methylenetetrahydrofolate reductase (MTHFR, P= 0.017) compared with the control group mothers. In the case children group, similar results were obtained, with a significant reduction in mRNA expression of methionine synthase gene (MTR, p = 0.010) and methionine synthase reductase (MTRR, p = 0.034) analysis of genotypes in relation to expression was found that the recessive genotype (CC) for the MTHFR gene A1298C polymorphism is associated with reduced expression of its mRNA. Conclusion: Folate metabolism related genes are low expressed on both case groups of this study, since all four genes (RFC1,MTHFR, MTR, MTR,) were reduced on mothers and two genes (MTR, MTRR) in their children. These down regulated genes represent an increased risk associated with the presence of oral clefts in these individuals.
173

Carga de trabalho e demandas produtivas no processo de encomenda expressa : um estudo de caso de uma empresa pública do setor de serviços

Ghisleni, Cristhian Luiz January 2012 (has links)
Em empresas responsáveis por serviços de encomenda expressa a concorrência é bastante acentuada. Neste caso, o planejamento e a adoção de estratégias eficazes de gerenciamento de recursos produtivos e humanos assume uma importância ainda maior. O objetivo geral deste trabalho foi o de estudar os problemas ergonômicos nas etapas e subetapas do processo produtivo em uma empresa pública de serviços de encomendas expressas e propor melhorias. Este documento contempla uma sequência de três artigos que abordam o tema produção e Ergonomia no processo produtivo de encomenda expressa. O primeiro artigo caracteriza a estrutura da empresa pública, objeto do estudo, e verifica como esta gerencia a Ergonomia. O referido artigo mostrou que algumas áreas, como a de encomendas expressas, carecem de estudos ergonômicos mais detalhados. Já o segundo artigo contextualiza o segmento de encomenda expressa brasileiro, as estratégias adotadas e as principais variáveis presentes na captação, tratamento e entrega. O estudo evidenciou que este mercado é muito acirrado com as empresas utilizando estratégias agressivas, como por exemplo, o atendimento 24 horas e a postagem de encomendas sem limite de peso para conquistar o cliente e que estas estratégias têm relação direta com o processo produtivo. No terceiro artigo, foi feito um comparativo entre as subetapas identificadas como gargalos produtivos do processo de encomenda expressa, incluindo a avaliação da carga de trabalho ou da penosidade em cada uma das subetapas gargalo. Isto permitiu estabelecer as prioridades das ações necessárias para a melhoria no contexto produtivo e ergonômico. / In companies responsible for express delivery, competition is highly pronounced. In this case, the planning and adoption of effective strategies for managing production and human resources take on even greater importance. The general goal of this work was to study ergonomic problems in the steps and substeps of the production process in a public express delivery company and to propose improvements. This paper looks at a set of three articles addressing the topic production and Ergonomics in the production process of express delivery. The first article describes the structure of the public company that is the object of study and verifies how it manages Ergonomics. The said article showed that some areas, such as express delivery, lack more detailed ergonomic studies. The second article puts the Brazilian sector of express delivery into context, the strategies adopted and the main variables present in the collection, treatment and delivery. The study indicated that this market is quite competitive, with companies using aggressive strategies, such as 24-hour service and shipping of parcels without weight limits, in order to win over customers. These strategies have straight relation with some aspects of production process. In the third article, a comparison was made between the substeps identified as production bottle necks in the express delivery process, including the evaluation of the workload or burden in each of the bottleneck substeps. This allowed for the establishment of priority actions needed to improve the productive and ergonomic setting.
174

Emoção expressa em cuidadores de pessoas com transtorno mental: influência do estresse, do estilo de vida e do sofrimento mental / Expre s sed emotion in care rs of people with mental disorde rs : role of stress, lifestyle and mental suffering

Angélica da Silva Araujo 31 May 2016 (has links)
A Emoção Expressa (EE) é um conceito referente à qualidade das relações familiares e pode ser considerada como um traço ou como um estado das interações, caracterizada por três dimensões: comentários críticos (CC), hostilidade e superenvolvimento emocional (SEE). Obje tivos: avaliar e descrever o nível de EE entre cuidadores de pessoas com transtorno mental e sua associação com variáveis sociodemográficas, estresse precoce, sintomas se estresse, estilo de vida e sofrimento mental. Método: estudo com abordagem quantitativa, epidemiológico, corte transversal e caráter correlacional. Participaram 112 familiares cuidadores de pessoas com transtorno mental admitidas para internação em um hospital psiquiátrico no interior do Estado de São Paulo. Os instrumentos utilizados foram: Questionário sociodemográfico, de condições ocupacionais e de saúde; Questionário Familiar; Questionário sobre Traumas na Infância; Inventário de Sintomas de Estresse para Adultos de LIPP; Questionário Estilo de Vida Fantástico; Self-Reporting Questionnaire 20. A análise da confiabilidade e da consistência interna das escalas foi feita por meio do cálculo do coeficiente Alfa de Cronbach. Seguiu-se as análises estatísticas descritivas (cálculo das frequências, médias e desvio-padrão das respostas dos cuidadores aos instrumentos), bivariadas (para verificar a associação entre as variáveis, por meio dos testes Qui -Quadrado de Pearson, Exato de Fisher e Mann-Whitney) e de regressão logística, utilizando-se o programa SPSS versão 22.0. O nível de significância adotado foi de 5% (alfa <= 0,05). Todas as questões éticas foram respeitadas. Re sultados : a maioria dos cuidadores de pessoas com transtornos mentais em início de internação foi avaliada com altos níveis de EE (tanto global quanto nos domínios CC e SEE), com presença de estresse precoce, com presença de sintomas de estresse e com presença de sofrimento mental. Quanto ao estilo de vida, a maioria foi avaliada com estilo de vida bom ou muito bom. A EE no domínio SEE apresentou associação estatisticamente significativa com as variáveis uso frequente de medicamentos, estresse precoce, fase do estresse e sofrimento mental . Foram identificados como fatores de proteção para alta EE no domínio CC o ensino fundamental e a renda familiar. Já a idade foi fator de risco para alta EE no domínio CC. Já para alta EE no domínio SEE, o estresse precoce e o sofrimento mental foram fatores de risco. Conclusõe s : este estudo possibilitou avaliar importantes aspectos que podem influenciar a qualidade das relações entre cuidador e pessoa com transtorno mental. Emoção Expressa, estresse precoce, sintomas de estresse e sofrimento mental destacam- se como fenômenos relevantes ao planejamento do cuidado à familiares cuidadores de pessoas com transtornos mentais. Dada a complexidade desse fenômeno, são necessários estudos ampliados que abordem características tanto dos famil iares quanto dos pacientes e do ambiente, em diversos momentos, tais como na internação, após a alta e ao longo dos tratamentos extra hospitalares / Emotion Express (EE) is a concept referring to the quality of family relationships and can be considered as a stroke or as a state of the interactions, characterized by three dimensions: critical comments (CC), hostility and emotional overinvolvement (EOI). Objectives: to evaluate and describe the EE level among caregivers of people with mental disorders and their association with sociodemographic variables, early stress symptoms stress, lifestyle and mental suffering. Method: study of quantitative epidemiological approach, cross-sectional and correlational character. Participated 112 family caregivers of people with mental illness admitted to hospital in a psychiatric hospital in the state of São Paulo. The instruments used were: sociodemographic questionnaire, occupational and health conditions; Family Questionnaire; Questionnaire on Trauma in Childhood; Inventory of Stress Symptoms for Adults Lipp; Fantastic Lifestyle Questionnaire; Self-Reporting Questionnaire 20. The analysis of reliability and internal consistency of the scales was done by calculating Cronbach\'s alpha coefficient. Descriptive statistical analysis was followed (calculation of frequencies, means and standard deviations of the responses of caregivers instruments), bivariate (to verify the association between variables, using the chi -square tests of Pearson, Fisher exact and Mann Whitney) and logistic regression using SPSS version 22.0. The significance level was 5% (alpha <= 0.05). All ethical issues have been met. Results: most of the carers of people with mental disorders in early hospitalization was evaluated with high levels of EE (both globally and in the CC and EOI domains), with the presence of early stress, with the presence of stress symptoms and the presence of suffering mental. As for the lifestyle, most were evaluated with style good or very good life. EE in the EOI domain showed a statistically significant association with the variables frequent medicines use, early stress, stress phase and mental suffering. They were identified as EE for high protection factors in the CC domain elementary school and family income. In contrast, age was a risk factor for high EE in the CC domain. As for high EE in the EOI domain, early stress and mental suffering were risk factors. Conclus ions : this study evaluates important aspects that can influence the quality of the relationship between caregiver and person with mental disorder. Expressed Emotion, early stress, stress symptoms and mental suffering stand out as phenomena relevant to the planning of care for family caregivers of people with mental disorders. Given the complexity of this phenomenon, we need expanded studies that address characteristics of both relatives and patients and the environment, at various times, such as in hospital after discharge and over the extra hospital treatment
175

Carga de trabalho e demandas produtivas no processo de encomenda expressa : um estudo de caso de uma empresa pública do setor de serviços

Ghisleni, Cristhian Luiz January 2012 (has links)
Em empresas responsáveis por serviços de encomenda expressa a concorrência é bastante acentuada. Neste caso, o planejamento e a adoção de estratégias eficazes de gerenciamento de recursos produtivos e humanos assume uma importância ainda maior. O objetivo geral deste trabalho foi o de estudar os problemas ergonômicos nas etapas e subetapas do processo produtivo em uma empresa pública de serviços de encomendas expressas e propor melhorias. Este documento contempla uma sequência de três artigos que abordam o tema produção e Ergonomia no processo produtivo de encomenda expressa. O primeiro artigo caracteriza a estrutura da empresa pública, objeto do estudo, e verifica como esta gerencia a Ergonomia. O referido artigo mostrou que algumas áreas, como a de encomendas expressas, carecem de estudos ergonômicos mais detalhados. Já o segundo artigo contextualiza o segmento de encomenda expressa brasileiro, as estratégias adotadas e as principais variáveis presentes na captação, tratamento e entrega. O estudo evidenciou que este mercado é muito acirrado com as empresas utilizando estratégias agressivas, como por exemplo, o atendimento 24 horas e a postagem de encomendas sem limite de peso para conquistar o cliente e que estas estratégias têm relação direta com o processo produtivo. No terceiro artigo, foi feito um comparativo entre as subetapas identificadas como gargalos produtivos do processo de encomenda expressa, incluindo a avaliação da carga de trabalho ou da penosidade em cada uma das subetapas gargalo. Isto permitiu estabelecer as prioridades das ações necessárias para a melhoria no contexto produtivo e ergonômico. / In companies responsible for express delivery, competition is highly pronounced. In this case, the planning and adoption of effective strategies for managing production and human resources take on even greater importance. The general goal of this work was to study ergonomic problems in the steps and substeps of the production process in a public express delivery company and to propose improvements. This paper looks at a set of three articles addressing the topic production and Ergonomics in the production process of express delivery. The first article describes the structure of the public company that is the object of study and verifies how it manages Ergonomics. The said article showed that some areas, such as express delivery, lack more detailed ergonomic studies. The second article puts the Brazilian sector of express delivery into context, the strategies adopted and the main variables present in the collection, treatment and delivery. The study indicated that this market is quite competitive, with companies using aggressive strategies, such as 24-hour service and shipping of parcels without weight limits, in order to win over customers. These strategies have straight relation with some aspects of production process. In the third article, a comparison was made between the substeps identified as production bottle necks in the express delivery process, including the evaluation of the workload or burden in each of the bottleneck substeps. This allowed for the establishment of priority actions needed to improve the productive and ergonomic setting.
176

Aerosol and ozone retrieval in the Martian atmosphere using the SPICAM/UV instrument and algorithm preparation for future missions

Willame, Yannick 05 November 2015 (has links)
Mars is the fourth planet of the Solar System starting from the Sun. Compared to Earth, Mars has an atmosphere that is significantly thinner and undergoes also a seasonal cycle that is more marked. A Martian year lasts about two terrestrial years. One of the particularity of the Martian atmosphere is the continuous presence of an airborne dust layer.SPICAM is an instrument on board the Mars-Express satellite orbiting around Mars since the end of 2003. This instrument is divided in two modules: SPICAM/IR, a infrared spectrometer (1.0 - 1.7 µm) and SPICAM/UV, a spectrometer working in the ultraviolet range (106 - 317 nm). In this work, we have analysed the SPICAM/UV measurements that have been recorded in nadir viewing and in the spectral interval between 220 and 290 nm.The analysis of this spectral domain allows to study different species and constituents of the Martian atmosphere such as ozone, dust and ice clouds. In the frame of this work, we have developed a method capable of inverting the SPICAM spectra obtained in nadir viewing in order to simultaneously retrieve the integrated quantities of these different species i.e. the ozone total column, and the integrated optical depths of dust and ice clouds. The method is based on a radiative transfer code that allows to take into account the scattering of light by the different molecules and aerosols of the Martian atmosphere. The surface reflectivity is also considered and is retrieved in the cases where no ice clouds are present in the observed scenes, ice clouds reducing the sensitivity in the surface albedo. Therefore, a cloud detection algorithm has been developed and its results were compared with results obtained with other methods and instruments for validation.Our method has been used to invert the data measured by SPICAM/UV over more than four Martian years which allowed to obtain climatologies of the different studied species: the spatial and seasonal distributions of the ozone column, the optical depths of dust and ice clouds and also the surface albedo are presented in this work. These distributions are discussed and compared to those obtained in previous works obtained with other instruments.This work is also a preparation for the future measurement analysis of the NOMAD/UVIS, an instrument that will be on board the ExoMars Trace Gas Orbiter which is planned to be launched in the beginning of 2016. The algorithm developed in this thesis has also been used to assess performances of NOMAD/UVIS such as the detection limits of particular gases (O3, SO2 et NH3) and the values of the signal-to-noise ratio. / Mars est la quatrième planète du Système Solaire en partant du Soleil. Comparée à la Terre, Mars se caractérise par une atmosphère significativement plus ténue, et possède également un cycle annuel des saisons plus marqué. Une année martienne dure environ deux années terrestres. Une des particularités de l'atmosphère de Mars réside en la présence persistante d'une couche de poussière en suspension.SPICAM est un instrument embarqué à bord du satellite Mars-Express qui orbite autour de Mars depuis fin 2003. Il comprend deux modules: SPICAM/IR, un spectromètre infrarouge (1.0 - 1.7 µm) et SPICAM/UV, un spectromètre opérant dans le domaine ultraviolet (106 - 317 nm). Dans le cadre de ce travail, nous avons analysé les mesures de SPICAM/UV obtenues en visée nadir dans l'intervalle spectral s'étendant de 220 à 290 nm.L'analyse de ce domaine spectral permet d'étudier différentes espèces ou constituants de l'atmosphère martienne telles que l'ozone, les poussières ainsi que les nuages de glace. Dans le cadre de ce travail, nous avons développé une méthode capable d'inverser les spectres SPICAM/UV en visée nadir afin de restituer simultanément les quantités intégrées de ces différentes espèces, à savoir la colonne totale d'ozone ainsi que l'opacité intégrée des poussières et des nuages. Cette méthode est basée sur un code de transfert radiatif, permettant de tenir compte de la diffusion de la lumière par les particules en suspension dans l'atmosphère martienne. La réflectivité de la surface martienne est également étudiée et restituée pour les cas où aucun nuage n'est présent dans les scènes observées, les nuages réduisant la sensibilité en l'albédo de surface. Pour ce faire, un algorithme de détection des nuages a été développé et ses résultats ont été comparés avec les résultats obtenus par d'autres méthodes et instruments afin de le valider.Notre méthode d'inversion a été utilisée pour analyser les données recueillies par SPICAM/UV pendant plus de 4 années martiennes, permettant d'obtenir une climatologie des différentes espèces étudiées: des distributions spatiales et saisonnières de la colonne d'ozone, de l'opacité des poussières et nuages de glace ainsi que de l'albédo de surface sont présentées dans ce travail. Ces distributions sont discutées et comparées à celles obtenues dans des travaux antérieurs à l'aide d'autres instruments.Ce travail constitue également une préparation en vue de l'analyse des données de l'instrument NOMAD/UVIS, supervisé par l'IASB-BIRA, et qui sera lancé à bord de la sonde ExoMars Trace Gas Orbiter en direction de Mars au début de l'année 2016. L'algorithme développé dans ce travail a notamment été utilisé pour l'estimation de performances de NOMAD/UVIS telles que les limites de détection de certains gaz (O3, SO2 et NH3) ou encore les valeurs du rapport de signal-sur-bruit. / Doctorat en Sciences / info:eu-repo/semantics/nonPublished
177

Analýza produktů poskytovatelů KEB služeb na poli B2B / Analysis of products of CEP service providers in B2B field

Luxová, Adéla January 2012 (has links)
The main goal of this thesis is to find an optimal CEP service provider for specific company by using Fuller's pairwise comparison method. The thesis focuses only on B2B field. The products and parameters are chosen on that basis and they also correspond to needs of the company. At the beginning there is theoretical part, which enables to understand the following problematic and analysis properly. The next part explains the needs of companies in B2B field in the terms of CEP services. The last part is mainly about analysis and about the specific case. At the end of the thesis there is a final conclusion.
178

Analýza logistických procesů u internetového obchodu / Analysis of logistic processes in e-shop

Kuča, Vít January 2012 (has links)
This Master's thesis focuses on chosen logistic processes of the specific e-shop. In the theoretical part, the specific environment of e-shops is described. This part also contains theoretical base for providers of courier, express and parcel services. The practical part of the thesis is divided into two parts. The first one shows ABC analysis and its suitability for the chosen entity. In the other part, sent parcels are analyzed, focusing on its structure and frequency. In the conclusion of the paper, there is an evaluation of benefits from the proceedings taken during the elaboration of this thesis.
179

Vysokorychlostní komunikační linka pro akvizici dat / High performance data acquisition communication line

Hadámek, Jakub January 2020 (has links)
The aim of this thesis is the acquisition of data from the AD converter and it’s transfer via the JESD204B interface to FPGA with the following transformation and transfer to PC through 100G Ethernet or PCI Express interface. The first part of the thesis is focused on the introduction to used technologies and hardware and analysis of the solution of this project. Second part of the thesis describes solution and it’s functionality. I created HDL design which allows to transfer data from AD converter using both of the interfaces mentioned above. I also created software application for OS Linux which allows to receive and store incoming data in PC. In the end, the results of the measurement using the converter board are presented and discussed.
180

Společenská odpovědnost firmy DHL Express (Czech Republic) s.r.o. / Corporate Social Responsibility in DHL Express Company(Czech Republic)

Hercik, Marek January 2016 (has links)
This master’s thesis deals with corporate social responsibility of company DHL Express (Czech Republic) s.r.o. and its impact on corporate image. The work is primarily focused on the characterization and analysis of the CSR activities of this logistics company. The first part describes the corporate social responsibility from a theoretical perspective. Subsequently in the second part is analyzed which CSR tools are used by DHL Express and how are they perceived by customers. Attention is paid to the global and local activities of the company and feedback

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