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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.
111

Controle de erosão em estradas rurais não pavimentadas, utilizando sistema de terraceamento com gradiente associado a bacias de captação

Casarin, Rui Donizete [UNESP] 20 August 2008 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:26:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-08-20Bitstream added on 2014-06-13T18:30:34Z : No. of bitstreams: 1 casarin_rd_me_botfca.pdf: 1894118 bytes, checksum: a79719f400dc5c1f108825800d1d028c (MD5) / Universidade Estadual Paulista (UNESP) / A erosão provocada pela água no leito e nas margens das estradas rurais de terra está intimamente relacionada à má drenagem, sendo um dos principais fatores para sua degradação. Para que o sistema de drenagem seja feito de forma adequada é necessário o conhecimento da erodibilidade, capacidade de infiltração de água no solo e adoção de práticas mecânicas de elevação do greide e interceptação de águas através de dispositivos de captação. O objetivo dessa pesquisa foi desenvolver um sistema de contenção de águas pluviais em trecho de estrada rural encaixada no terreno, em solo do tipo Argissolo Distrófico Abrúptico de textura arenosa, com base em técnicas de abatimento de taludes, elevação do greide da estrada com abaulamento transversal e desviador do fluxo das águas, seguido de segmentos de terraços embutidos associados a bacias de captação. A área de estudo é em contorno a um trecho da estrada Rural PLA 06 localizada na região Centro-Oeste do Estado de São Paulo com coordenadas geográficas no espigão: Latitude 22º 34’54”S e Longitude 49º 25’02”O e altitude 594 metros e, na parte baixa do trecho: Latitude 22º34‘53”S e longitude 49º24‘34”O e altitude 544 metros. 22º34‘53”S e longitude 49º24‘34”O e altitude 544 metros. As frações granulométricas... / The erosion caused by water in the roadbeds and at the margins of terrene roads in rural areas is closely related to poor drainage, one of the main factors to their degradation. For the drainage system is done in an appropriate manner, knowledge of the erosionability and of the ability of water infiltration into the soil is necessary as well as the adoption of practices of mechanical roadbed lifting and interception of water through reception devices. The goal of this research was to develop a system to contain rain water in a rural stretch of road seated on the ground in the soil type Abruptic Distrophic Argisol of sandy texture, based on techniques for abatement of embankments, raising the roadbeds across the road with bulging deflector and the flow of water, followed by segments of terraces built in association with the catchment basins. The study outline comprehends a stretch of the rural road PLA 06 located in the Central West of Sao Paulo State in the jetty with geographic coordinates: latitude 22 ° 34 '54” S and longitude 49 ° 25' 02”; the altitude is of 594 meters and, at the bottom of the extension: latitude 22 ° 34'53” S and longitude 49 ° 24'34”. The altitude in this stretch is 544 meters... (Complete abstract click electronic access below)
112

A influência do discurso médico no poder punitivo / The influence of medical speech in the punitive power

Ricardo Tadeu Penitente Genelhú 17 November 2010 (has links)
Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro / Esta dissertação discute a relação entre a medicina, a psiquiatria, a psicologia, o poder punitivo e o Direito Penal, bem como a influência que o discurso de uma produziu no outro, e vice versa. Defende a idéia de que a medicina é um espetáculo de poder que, acasalado com o poder punitivo, e interagindo com, e sobre, o indivíduo, invade e se apropria do seu corpo para, usando-o como instrumento de dominação política, discipliná-lo de acordo com a conveniência, sobretudo, da higiene e, naquela sua relação espúria com o poder punitivo, diferenciá-lo e controlá-lo social e penalmente. Sustenta, ainda, que, malgrado o acasalamento não tenha sido intencional, o Estado via na medicina o instrumento para reforçar o seu poder, enquanto essa via naquele o apoio para o seu espraiamento, embora Medicina e Estado tenham convergido, mas também divergido, por vezes tática e estrategicamente, porquanto nem sempre os dois poderes reconheceram o valor da aliança que haviam estabelecido. Então, defende a tese de que o Estado acatou a medicalização das suas ações políticas e admitiu o valor político das ações da medicina, e com vantagens para ambos que, dividindo o poder, conquistaram. É que, a medicina, mais rápida e mais adequada aos problemas salutares apresentados, ajudava-o a se imiscuir no corpo para a permanência parasitária daquela. E, para manter seu direito ao discurso, sustenta que a medicina reinventou constantemente uma necessidade para, diante dela, apresentar-se como única solução, tendo conseguido isso mediante a apresentação de uma retórica dominial eloquente, mas, sobretudo, tecnificada, é dizer, inacessível ao dominado. Com isso, a disciplina, o controle e a repressão do indivíduo, penal e medicamente, estavam prontas, pois, Direito e Medicina, aquele com a lei, esta com o remédio, juntos, dominaram e dominam os destinos do indivíduo, e da coletividade. Demonstrou, ainda, que os higienistas nunca se desocuparam de suas funções. E, por fim, que os princípios penais devem, independente da qualificação que se os dê, sempre refrear o poder punitivo. / This dissertation discusses the relationship between the medicine, the psychiatry, the punitive power and the Penal Law, as well the influence that the ones speech produces in the other, and vice versa. Argues the idea that the medicine is an spectacule of power that, with the punitive power, and interacting with it, and above, the individual, invades and apropriates of their body for, using it as instrument of political domination, disciplin it according with the convenience, mainly, of the hygiene and, in that spurious relationship with the punitive power, diferenciating and controlling it social and criminally. Maintains, even, that, despite the union not have been intentional, the State saw in medicine an instrument to enforce its own power, while medicine saw in State the suport for its propagation, despite Medicine and State have converged, but also diverged, sometimes, tactically and strategically, because not allways the both powers recognized the value of the alliance that they have just established. So, defends the thesis that the State accepted the medicalization of its public actions and admitted the political value of the medicine actions, and with the advantage for both that, sharing the power, they won. It means that, the medicine, more fast and more appropriate to the relevant problems presented, helped the State to interfere in the body, insofar the State, with its hegemonical power, opened gaps into its own body to the remaining parasitic of the other onte. And, for keeping its right of speech, argues that the medicine reinvented frequentlly a necessity for present itself as the only solution, getting it by the presentation of one dominial eloquent rhetoric, but, mainlly, technified, or, inaccessible to the dominated. With it, the discipline, the control and the repression of the individual, penal and medically, were ready, because, Law and Medicine, that one with legislation, and this one with drugs, together, dominated and still dominate the destinys of the individual, and collectivity. Demonstrate, more, that the hygienists never stopped their functions. And, finally, the penal principles must, independently of the given qualification, allways stops the punitive power.
113

Probabilistic Finite Element Analysis and Design Optimization for Structural Designs

January 2012 (has links)
abstract: This study focuses on implementing probabilistic nature of material properties (Kevlar® 49) to the existing deterministic finite element analysis (FEA) of fabric based engine containment system through Monte Carlo simulations (MCS) and implementation of probabilistic analysis in engineering designs through Reliability Based Design Optimization (RBDO). First, the emphasis is on experimental data analysis focusing on probabilistic distribution models which characterize the randomness associated with the experimental data. The material properties of Kevlar® 49 are modeled using experimental data analysis and implemented along with an existing spiral modeling scheme (SMS) and user defined constitutive model (UMAT) for fabric based engine containment simulations in LS-DYNA. MCS of the model are performed to observe the failure pattern and exit velocities of the models. Then the solutions are compared with NASA experimental tests and deterministic results. MCS with probabilistic material data give a good prospective on results rather than a single deterministic simulation results. The next part of research is to implement the probabilistic material properties in engineering designs. The main aim of structural design is to obtain optimal solutions. In any case, in a deterministic optimization problem even though the structures are cost effective, it becomes highly unreliable if the uncertainty that may be associated with the system (material properties, loading etc.) is not represented or considered in the solution process. Reliable and optimal solution can be obtained by performing reliability optimization along with the deterministic optimization, which is RBDO. In RBDO problem formulation, in addition to structural performance constraints, reliability constraints are also considered. This part of research starts with introduction to reliability analysis such as first order reliability analysis, second order reliability analysis followed by simulation technique that are performed to obtain probability of failure and reliability of structures. Next, decoupled RBDO procedure is proposed with a new reliability analysis formulation with sensitivity analysis, which is performed to remove the highly reliable constraints in the RBDO, thereby reducing the computational time and function evaluations. Followed by implementation of the reliability analysis concepts and RBDO in finite element 2D truss problems and a planar beam problem are presented and discussed. / Dissertation/Thesis / M.S. Civil and Environmental Engineering 2012
114

Das migrações forçadas à contenção territorial: as geografias do campo de refugiados de Dadaab no Quênia.

SILVA, Daniela Florêncio da 06 May 2016 (has links)
Submitted by Irene Nascimento (irene.kessia@ufpe.br) on 2016-10-06T20:07:59Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) DISSERTAÇÃO FINAL DANIELA FLORÊNCIO DA SILVA GEOGRAFIA.compressed (1).pdf: 12397908 bytes, checksum: 6b3055fa006076837fe9ef09302e6b56 (MD5) / Made available in DSpace on 2016-10-06T20:07:59Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) DISSERTAÇÃO FINAL DANIELA FLORÊNCIO DA SILVA GEOGRAFIA.compressed (1).pdf: 12397908 bytes, checksum: 6b3055fa006076837fe9ef09302e6b56 (MD5) Previous issue date: 2016-05-06 / Capes / A seguinte pesquisa tem como objetivo a compreensão dos fatores estruturantes da dinâmica territorial do campo de refugiados de Dadaab no Quênia. Formado em 1991 pela migração forçada do povo somali, em virtude da eclosão da guerra civil em seu país, esse campo de refugiados, hoje, abriga 348 mil pessoas de diferentes nacionalidades e contextos de deslocamento forçado. A dimensão desse fenômeno, não é só percebida por ser o maior campo de refugiados no mundo, mas pela complexidade de fatores envolvidos em sua formação. A sua origem é aqui relacionada, desde o processo de migração forçada. A suspensão da vida dessas pessoas, que ao ultrapassarem a fronteira política de seus países, tornam-se refugiadas, não se refere apenas à perda de seus direitos políticos ou de sua cidadania, mas a uma suspensão de “sentidos” e de continuidade ocasionada pela sua contenção territorial nesse campo de refugiados. A sua jornada ou movimento em busca de um refúgio temporário é paralisada e transformada em espera e contenção. O campo de refugiados de Dadaab, formado em um contexto de “emergência”, transformou-se em um território de exceção, através de uma prática de contenção territorial informal adotada pelo governo queniano. A persistência de suas vidas no campo, em meio a muitas proibições, desenvolveu um processo de reterritorialização precário, mas confrontado por resistências, contornos e permeado por transterritorialidades e encontros. / The following research aims to understand the structural factors of territorial dynamics of the Dadaab refugee camp in Kenya. Formed in 1991 by the forced migration of the Somali people, because of the outbreak of civil war in their country, this refugee camp, today, houses 348,000 people of different nationalities and forced displacement contexts. The scale of this phenomenon is not only perceived to be the largest refugee camp in the world, but by complexity of factors involved in their formation. Its origin is related here, from the forced migration process. The suspension of their lives, that to overcome the political borders of their countries, they become refugees, refers not only to the loss of political rights, or their citizenship, but a suspension of "senses" and continuity occasioned by their territorial containment in this refugee camp. Your journey or movement, seeking temporary refuge, is paralyzed and transformed in waiting and containment. The Dadaab refugee camp, formed in a context of "emergency", turned into a territory of exception, through an informal practice of territorial containment adopted by the Kenyan government. The persistence of their lives in this camp, among many bans, developed a process of precarious reterritorialization, but confronted by resistance, contours and permeated by transterritorialities and encounters.
115

Možnosti zvyšování jaderné bezpečnosti pro koncept pasivního systému s ledními kondenzátory v případě LOCA hávárie / Possibilities of nuclear safety enhancement for concept of passive system with ice condensers in case of LOCA accidents

Pluške, Zbyněk January 2012 (has links)
The Thesis discusses about safety systems of nuclear power plants, primarily about passive containment protection. That have aims to reduce increase of pressure during the LOCA. It occupy specific type of passive system, it is Ice Condenser. In chapters is make step by step design of replacement current material for other material, that changes its phase at higher temperature. It chose a suitable material, prepared thermal calculation and structural design. Finally is prepared the economic analysis of production of new type condenser.
116

Variations in the primary control availability : An investigation of market conditions’ influence on the FCR-N product

Mann, Johan, Dahlin, Kasper January 2015 (has links)
The systematic implementation of intermittent energy production sources has made the energy system more volatile and unpredictable than ever before. This development increases the importance of balancing services, in particular the primary control. However, the current research that has been conducted on the primary regulation products is limited. Specifically, the factors that drive the variation in availability and price of the primary control are unknown and the procurement is in some aspects based on perception rather than quantitative analysis. This study has investigated which these factors are and their relative significance on the availability and price of the primary control product called Frequency Containment Reserve for Normal Operation – FCR-N. The study was conducted according to methods with both qualitative and quantitative aspects to cover the complex nature of the problem from different views. The study was done in collaboration with Fortum POT at their office to gain insight and support from a market actor. Given the research questions, the result from this study is threefold. Firstly, the factors that affect the FCR-N availability have been identified and other factors have been categorised as insignificant. Secondly, the factors’ relative significances are stated to show their dependency with the FCR-N product. Lastly, an outlier case study showed how extreme situations changes the conditions for the FCR-N procurement. It has been concluded that the FCR-N price for normal operation on the Nordic electricity market can be generalised successfully through the identified parameters. It is also shown that deviations from normal operations have the possibility to create deviations in the FCR-N availability, indicating that these hours of extreme values need additional analysis in order to fully understand the available capacity. However, the significance of the researched parameters will be an indication in analysis of both the normal case and during deviations as these are the most important measures for the FCR-N availability and price.
117

Temperature induced stresses in a reactor containment building : A case study of Forsmark F1 / Temperaturinducerade spänningar i en reaktorinneslutning : En fallstudie av Forsmark F1

Könönen, Mattias January 2012 (has links)
Målen med denna uppsats var att studera två aspekter av temperatur inducerade spänningar med referens till kärnkraftsanläggningen Forsmark F1. Ena aspekten inkluderade den termiska kyleffekten av de ventilerade spännkabelrören i cylinderväggen. Det var av intresse att studera om den termiska kyleffekten av de ventilerade spännkabelrören hade en positiv global effekt som var relevant att beakta i globala tredimensionella modeller. Den andra aspekten inkluderade inverkan av ingjutet stål i den övreringplattan. Med syftet att studera om ingjutet stål var en aspekt som ansågs nödvändigt att beakta i transienta analyser.   Huvudanalyseringsverktyg var finita element metoden (FEM), genom användning av det kommersiellt tillgängliga finita element programmet SOLVIA.   Inverkan av den termiska kyleffekten av de ventilerade spännkabelrören indikerade en spännings reducerande effekt, med reducerade zoner av sprucken betong i cylinderväggen vid förhöjda temperaturer. Inverkan av ingjutet stål indikerade ökade temperaturskillnader mellan det ingjutna stålet och den omgivande betongen, med sprucken betong lokalt mellan stålet och betongen vid förhöjda temperaturer. Den termiska kyleffekten av de ventilerade spännkabelrören ansågs relevant att beakta i globala tredimensionella modeller. Ingjutet stål ansågs vara nödvändigt att inkludera i transienta analyser. / The aims of this thesis were to study two aspects of temperature induced stresses with reference to the nuclear power plant Forsmark F1. One aspect included the thermal cooling effect of the ventilated tendon ducts in the cylinder wall. It was of interest to study if the thermal cooling effect of the ventilated tendon ducts had a positive global effect which was relevant to consider in global three-dimensional models. The other aspect included the influence of embedded steel in the upper ring slab. With the purpose to study if embedded steel was an aspect that was considered necessary to include in transient analyses.   The used main analysis tool was the finite element method (FEM), through the use of the commercially available finite element program SOLVIA.   The influence of the thermal cooling effect of the ventilated tendon ducts indicated a stress reducing effect, with reduced cracked concrete in the cylinder wall at elevated temperatures. The influence of embedded steel indicated increased temperature differences between the embedded steel and the surrounding concrete, with cracked concrete locally between the steel and the concrete at elevated temperatures. The thermal cooling effect of the ventilated tendon ducts was considered relevant to consider in global three-dimensional models. Embedded steel was considered necessary to include in transient analyses.
118

Geoenvironmental Reliability of Soil-Bentonite Mixture Cutoff Walls / ソイルベントナイト遮水壁の地盤環境的信頼性

Takai, Atsushi 24 March 2014 (has links)
京都大学 / 0048 / 新制・論文博士 / 博士(地球環境学) / 乙第12827号 / 論地環博第7号 / 新制||地環||24(附属図書館) / 31314 / (主査)教授 勝見 武, 教授 三村 衛, 准教授 乾 徹 / 学位規則第4条第2項該当 / Doctor of Global Environmental Studies / Kyoto University / DFAM
119

Investigation of Frequency Containment Reserves With Inertial Response and Batteries

Ghasemi, Hashem, Melki, Jakob January 2019 (has links)
The rise of Renewable Energy Sources (RES) such as wind and solar power, creates new challenges for electric power systems. One of these challenges occur in Frequency Containment Reserves (FCR) on power system because of decreasing system inertia from RES. The purpose of FCR is to regulate the system frequency after a disturbance that gives rise to a Rate of Change of Frequency (RoCoF) and an Instantaneous Frequency Deviation (IFD). Conventional electricity production such as hydro and nuclear power have a contribution for the amount of inertia in the system, while RES lack this contribution of inertia.This paper studies different cases of amount of inertia to understand the impact of lower amount of inertia caused by RES on power system. A power system was simulated and the IFD and SteadyState Frequency Deviation (SSFD) of the system were examined as the nuclear powers were substituted by wind powers. The results showed that a large amount of inertia implies a small IFD and vice versa.Furthermore, this paper also studies Battery Energy Storage System (BESS) as a power support for FCR when using RES. The conclusion for the impact of the battery was to use high injected power and triggering frequency level (TLF) and vice versa to get an acceptable IFD. In other words, this means that it is possible to keep the IFD within predefined limits by using batteries and identify the appropriate range of battery control settings.
120

High Strain Rate Data Acquisition of 2D Braided Composite Substructures

Ruggeri, Charles R. 23 December 2009 (has links)
No description available.

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