Dissertations / Theses on the topic 'Piston libre'
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Chouder, Ryma. "Étude théorique et expérimentale d'un moteur Ericsson à piston liquide libre de configuration originale." Electronic Thesis or Diss., Pau, 2023. https://theses.hal.science/tel-04473770.
Full textIn view of the global warming and pollution caused by the exploitation of fossil fuels, as well as the massive growth of the population, it is essential to find alternatives to fossil fuels in order to protect our planet and conserve fuel reserves for future generations. Ericsson engines belong to the family of thermal engines with external heat input, with separate compression and expansion chambers, and a single-phase working fluid. This type of engine, from a scientific point of view, falls within the field of thermal-energetics (62nd section of the French CNU). From the application point of view, it concerns the valorization of thermal renewable energies (concentrated solar energy, biomass combustion, energy recovery from flue gases, …) for the production of useful mechanical energy (or electrical energy by driving a generator) in small power installations (100 W ... 10 kW) for isolated or non-isolated sites.In this thesis, we have proposed a new original configuration of free liquid piston Ericsson engine, which is similar to a thermal compressor, where the useful mechanical energy is produced in an external expansion machine. This engine combines three technologies (Ericsson engine, liquid piston and free piston) which are by principle, efficient, reliable and inexpensive technologies.First of all, we have developed a model called "intracycle" in the Matlab/Simulink computing environment. This model considers the dynamics of the liquid columns and the forces applied on the liquid piston. It allows to express all the variables as a function of time, in order to predict the performance of the experimental prototype. The theoretical results obtained are presented and commented. Then, we describe in details the prototype of the new Ericsson engine configuration with free liquid piston realized in the LaTEP laboratory. The results of the tests in "driven mode", that is with the system fed by compressed air, are analyzed and presented. The comparison of the experimental and numerical data revealed that the numerical model predicts the experimental data well.Keywords: Ericsson engine, liquid piston, free piston, dynamic modeling
Chaix, Alain. "Qualification d'écoulements hypersoniques à haute enthalpie en soufflerie à piston libre." Aix-Marseille 1, 1997. http://www.theses.fr/1997AIX11085.
Full textCHOUCHARA, MOUSTAFA, and J. JULLIEN. "Etude theorique et experimentale d'un moteur a piston libre a allumage commande." Paris 6, 1994. http://www.theses.fr/1994PA066527.
Full textBurtschell, Yves. "Performances, dimensionnement et simulation numérique d'une soufflerie hypersonique à choc réfléchi à piston libre." Aix-Marseille 1, 1990. http://www.theses.fr/1990AIX11298.
Full textDumitrescu, Michel-Paul. "Mise au point et fonctionnement de TCM2, soufflerie hypersonique à piston libre de Marseille." Aix-Marseille 1, 1994. http://www.theses.fr/1994AIX11071.
Full textFrançois, Pierre. "Contribution à la modélisation électromagnétique d’un générateur linéaire à induction appliquée à un micro-cogénérateur Stirling à piston libre." Thesis, Cachan, Ecole normale supérieure, 2011. http://www.theses.fr/2011DENS0003.
Full textThis thesis focuses on the development of a residential cogenerator which consists of a linear induction generator driven by two Stirling engines, free-piston double-acting operating mode. The criteria characterizing such cogenerator are described and its various modes of use in the residential sector. The various technologies are reviewed.The equations of mechanics that underlie the control of the coupling of thermoelectric cogeneration and stability are defined.The electric generator is modeled to calculate the electrical coil coupled equations and the magnitudes of the equivalent circuit, this scheme allows us to reverse the pattern. The results of analytical models are validated by measurements on specially designed models. A parametric study of the structure of the generator has optimized its performances. The equations of mechanical and electrical model are used to lay the groundwork for optimization of all the cogenerator, considered as a system
SERAJ, MEHDIZADEH NASSER. "Modelisation energetique et amelioration des performances d'un moteur stirling a piston libre et deplaceur cinematique, destine a la production d'electricite." Nantes, 1998. http://www.theses.fr/1998NANT2008.
Full textHernandez, Gonzalez Omar. "Synthèse d'οbservateurs pοur des classes de systèmes nοn linéaires avec des sοrties échantillοnnées et retardées." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMC202/document.
Full textThe results given in this thesis deal with the design of high gain observers forsome classes on nonlinear systems. A class of multi-inputs/multi-output non uniformlyobservable systems has been first considered and an observer the gain of which is issuedfrom the resolution of a Lyapunov ordinary differential equation has been proposed. Theexponential convergence of the underlying observation error has been established underan appropriate persistent excitation condition. The design of the proposed observerhas then been reconsidered in order to account for the sampling and delay processeswhich may occur on the output. The redesigned observer assumes a cascade structurewith chained systems where the head of the cascade is an observer for the delayedstate while the state of the last system in the cascade constitutes an estimation ofthe system actual state. The second class of systems considered in this thesis is amulti-outputs observable normal form involving some uncertainties and with a delayedsampled output. A cascade observer allowing the estimation of the system actual statehas been proposed. The performance and main properties of the proposed observershave been illustrated in simulation by considering many examples throughout thisthesis
Salquebre, Quentin. "Développement d'un modèle de prédimensionnement d'un ensemble alternateur - machine Stirling à pistons libres." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT015/document.
Full textThough the Stirling engine was invented two centuries ago, it has never really grown to a fully marketable level. The current energy context has renewed the interest in this engine. Their ability to work with any external source of heat allow them to be associated with renewable energy such as solar energy. Beyond its ecological benefits, the invention of the free piston Stirling engine by W. Beale at the end of the 1960’s further increased the interest in Stirling engines. This novel structure allows the engine to operate without mechanical interface between pistons, which are driven entirely by the gas or other spring forces. In such engines, the pistons kinematics and the system thermodynamics are intimately coupled, thus increasing the complexity of the complete system computer modelling.This PhD presents an innovative technique to model a free piston Stirling engine that takes into account the coupling between the system thermodynamics and the mechanical response of the free pistons. This technique has been named LHA5V standing for Linear Harmonic Analysis 5 Volumes. It consists in splitting the engine in five open sub-systems: the compression and expansion spaces, the heater, the cooler and the regenerator. We hypothesize that the state variables are periodic, and the model then determines the variations of their mean, amplitude and phase values in order to satisfy the mass and energy conservation equations. This PhD also presents a model for a linear electric alternator, which can be coupled to the power piston. This electrical model is based on an analytical calculation of the thrust between the stator and the magnets. Magnetic flux and induction in the iron are determined by a carefully tuned reluctance network.Both thermal and electrical models have been designed to optimize both computing time and accuracy. The models generated have systematically been compared to experimental data or finite element analysis, with satisfactory results
Heidrich, Juliano Wilson Fonseca. "Modelagem e análise computacional de um refrigerador Stirling de pistão livre." Florianópolis, SC, 2002. http://repositorio.ufsc.br/xmlui/handle/123456789/82609.
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O presente trabalho tem por objetivo o desenvolvimento de um modelo matemático para a simulação numérica de máquinas Stirling usadas para refrigeração. Ciclos de refrigeração Stirling são encontrados em diversas aplicações como refrigeradores que operam em baixas temperaturas, equipamentos de diagnóstico médico e eletrônica sofisticada (elementos e dispositivos que empregam supercondutividade). No presente trabalho será explorada a utilização de uma máquina Stirling com aplicação em refrigeradores domésticos, como alternativa de substituição dos convencionais compressores herméticos e dos ciclos de compressão a vapor. O modelo explora o comportamento dinâmico do gás de trabalho e avalia o desempenho de alguns de seus principais componentes. O modelo matemático aqui utilizado se baseia em equações da termodinâmica, mecânica dos fluidos, transferência de calor, dinâmica e eletricidade. A meta é a geração de uma ferramenta para auxiliar a compreensão dos fenômenos envolvidos, bem como o projeto de novas máquinas. São apresentadas validações dos resultados obtidos pelo modelo, com resultados experimentais, e comparações com os sistemas de refrigeração usados atualmente. Os resultados numéricos obtidos pelo modelo apresentam consistência com os resultados experimentais. A máquina Stirling atingiu valores de desempenho, obtidos pelo modelo, comparáveis aos sistemas de refrigeração convencionais.
Hamit, Abdoulhadi. "La piste du commerce transsaharien Tripoli-Lac Tchad : étude d'anthropologie économique et historique." Paris 8, 1998. http://www.theses.fr/1998PA081429.
Full textThe topic of my research work deals with, on the one hand the events that took place back from the 8th century up to now so far as time is concerned ; on the over hand, it covers the north down to the south, that is to say the following territories : libya and niger (every stopping place from tripoli to lake tchad trade path or four areas including tripoli, fazzan, kawar and kanembornu). Thus, the research work is based on two main points : one is chronological and the other geographical. I would like to point out that this work is a doctorate in historic anthropology, not in history or geography. The study of historic and spatial events taked into account the analysis of contemporary age. The sultan bulu (1007-1023) and his successors down to umme all read the koran verses. This reality as well as the mahram of umme jilmi prove that umme (1086-1097) was the first moslem sultan. By that time, they practised ibadism owing to their links with traders from zawila and kawar who were ibadites themselves. The most interesting event about umme is that he secertly read the risala of al kairuwani. The later event means that malekism replaced ibadism and it never meant a change of dynasty under the leadership of umme. In addition, owing to link between the kanem-bornu and the tripolitania, we have changed the dates commoly admitted by the historians under the reigns of the bornu sultans in the 16th and 17th centuries. In different conflicts in order to control the trade path, led to the meeting civilisations that still bring together, up to now, north africa and moslem west africa countries
Herrera, Aquino Paul Alexander, and Mendoza Adriana Angélica Huayhua. "Factores relacionados a las exportaciones de pisco con subpartida arancelaria 2208.20.21.00 a España durante el periodo de 2012 a 2018 en el marco del TLC Perú – Unión Europea." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/652569.
Full textThe aim of this research is to determine the factors that are related to pisco exports to Spain within the framework of the Free Trade Agreement with the European Union during the period 2012 to 2018. For it, the thesis is divided into five chapters: theoretical framework, research plan, work methodology, development and application, analysis of results, and conclusions and recommendations. First of all, chapter N° 1 details the literature that supports the foundations applied in the work, constituting the epistemological background, the theoretical bases and a conceptual framework, whose purpose is to contextualize the way in which the topic of the study will be approached. Then, chapter N° 2 presents the axis of the research plan delimiting the problems, the general and the specific ones, justifying the choice of the subject and delimiting the limits to which it was imposed. Additionally, the hypotheses and objectives of the work are established. Subsequently, chapter N° 3 specifies the methodology, explaining the procedures applied for the development of the research, as well as obtaining the sample. Furthermore, chapter N° 4 describe the tools used to carry out the projections in the previous chapter are explained. Moreover, chapter N° 5 will analyze the results, exposing the material obtained from the research and verifying if the hypotheses initially proposed are valid or not. Finally, the conclusions and recommendations resulting from the carried-out analysis are described, contrasting the initial scenario with the results obtained.
Tesis
Callupe, Baldeón Jesús Miguel. "Diseño de un edificio multifamiliar de concreto armado de siete pisos sin sótanos en Pueblo Libre." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2020. http://hdl.handle.net/20.500.12404/18795.
Full textRamirez, Delgado Estefania. "Diseño estructural de un edificio de vivienda de concreto armado de seis pisos en Pueblo Libre." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2020. http://hdl.handle.net/20.500.12404/17645.
Full textTesis
Ribeiro, Luiz Fernando Paulino [UNESP]. "Máximo déficit acumulado de oxigênio em corridas livre e resistida em pista." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/108764.
Full textO máximo déficit acumulado de oxigênio (MAOD) é tido atualmente como medida padrão-ouro para diagnóstico da capacidade anaeróbia (CAn) em humanos. Particularmente o procedimento abreviado conhecido como #3 de Medbø constitui, por razões práticas, interessante opção de avaliação em atletas. Mas apesar da relevância da especificidade e crescente emprego de analisadores de gases portáteis na determinação de índices aeróbio em de campo, não são encontradas na literatura informações relativas à determinação, precisão ou validade do MAOD em pista de atletismo. Assim, foram objetivos do presente estudo: i) a determinação do MAOD e sua precisão em corredores por meio do procedimento #3 adaptado à pista; ii) análise da influência de variações quanto à inclusão de valores VO2 de repouso (VO2REP) nas regressões necessárias ao cálculo do MAOD e; iii) análise da validade concorrente do MAOD confrontando os valores obtidos em corrida livre (CL) aos verificados em teste de corrida resistida (CR). Num intervalo de duas semanas, 8 velocistas (21,5 ± 3,2 anos; 71,5 ± 6,0 kg; 180 ± 6 cm e 4,9 ± 1,3 % de gordura) foram submetidos a 6 sessões experimentais separadas por 48 a 72 horas em pista de 400 m, sendo 3 avaliações em CL e 3 em CR. Nesta última foi utilizado aparato móvel com intuito de impor de resistência horizontal de 4 % do peso corporal ao deslocamento dos voluntários. Em todas as avaliações o VO2 foi monitorado por meio de analisador portátil em modo de telemetria. Testes incrementais contínuos em ambas as condições foram realizados para determinação do VO2PICO e vVO2PICO. Regressões lineares velocidade-VO2 individuais foram calculadas a partir de 3 esforços submáximos de 6 min entre ~75 e 96% do VO2PICO com e sem VO2REP na velocidade zero para estimativa da demanda de oxigênio (DO2) para intensidades equivalentes a 120 e 110% da vVO2PICO em CL e CR, respectivamente. Finalmente, esforços...
Maximal accumulated oxygen deficit (MAOD) is nowadays taken as the gold standard measure of anaerobic capacity in humans. Namely, the abbreviated procedure known as the procedure #3 by Medbø, seems an interesting testing option for athletes due to practical reasons. But besides the relevance of specificity and the increasing use of portable gas analyzers for the assessment of aerobic parameters in field conditions, information on MAOD assessment, precision or validity in track tests are not available. Thus, the aims of this study were: i) to assess MAOD and its precision in runners by means of the procedure #3 adapted to the track; ii) to analyze the effects of variations regarding the use of resting VO2 (VO2REP) on the regressions used in the MAOD estimation and; iii) to analyze the concurrent validity of such measure by comparing the values attained in free (CL) and resisted (CR) running tests. In a two-week period, 8 sprint runners (21.5 ± 3.2 years; 71.5 ± 6.0 kg; 180 ± 6 cm and 4.9 ± 1.3 % fat) were subjected to 6 experimental sessions separated by 48 - 72 h on a 400 m track, being 3 evaluations carried out in the CL and 3 in the CR conditions. In the later one, a mobile device was used in order to impose an horizontal resistance of 4 % body weight to the subjects. In all tests the VO2 was monitored by means of a portable analyzer using telemetry. Incremental tests were performed in both conditions for the assessment of VO2PICO and vVO2PICO. Linear regressions between velocity and VO2 were determined from 3 submaximal efforts lasting 6 min between ~75 to 96% VO2PICO with and without VO2REP at zero velocity for the estimation of oxygen demand (DO2) for intensities of 120 and 110% vVO2PICO in CL and CR, respectively. Finally, exhaustive bouts at such intensities were carried out being the MAOD computed as the difference between total DO2 (DO2TOT) and accumulated oxygen uptake (VO2AC). Both in CL and CR, the inclusion of VO2REP...
Ribeiro, Luiz Fernando Paulino. "Máximo déficit acumulado de oxigênio em corridas livre e resistida em pista /." Rio Claro, 2013. http://hdl.handle.net/11449/108764.
Full textBanca: Marcelo Papoti
Banca: Martim Francisco Bottaro Marques
Banca: Luiz Eduardo Barreto Martins
Banca: Adelino Sanchez Ramos da Silva
Resumo: O máximo déficit acumulado de oxigênio (MAOD) é tido atualmente como medida padrão-ouro para diagnóstico da capacidade anaeróbia (CAn) em humanos. Particularmente o procedimento abreviado conhecido como #3 de Medbø constitui, por razões práticas, interessante opção de avaliação em atletas. Mas apesar da relevância da especificidade e crescente emprego de analisadores de gases portáteis na determinação de índices aeróbio em de campo, não são encontradas na literatura informações relativas à determinação, precisão ou validade do MAOD em pista de atletismo. Assim, foram objetivos do presente estudo: i) a determinação do MAOD e sua precisão em corredores por meio do procedimento #3 adaptado à pista; ii) análise da influência de variações quanto à inclusão de valores VO2 de repouso (VO2REP) nas regressões necessárias ao cálculo do MAOD e; iii) análise da validade concorrente do MAOD confrontando os valores obtidos em corrida livre (CL) aos verificados em teste de corrida resistida (CR). Num intervalo de duas semanas, 8 velocistas (21,5 ± 3,2 anos; 71,5 ± 6,0 kg; 180 ± 6 cm e 4,9 ± 1,3 % de gordura) foram submetidos a 6 sessões experimentais separadas por 48 a 72 horas em pista de 400 m, sendo 3 avaliações em CL e 3 em CR. Nesta última foi utilizado aparato móvel com intuito de impor de resistência horizontal de 4 % do peso corporal ao deslocamento dos voluntários. Em todas as avaliações o VO2 foi monitorado por meio de analisador portátil em modo de telemetria. Testes incrementais contínuos em ambas as condições foram realizados para determinação do VO2PICO e vVO2PICO. Regressões lineares velocidade-VO2 individuais foram calculadas a partir de 3 esforços submáximos de 6 min entre ~75 e 96% do VO2PICO com e sem VO2REP na velocidade zero para estimativa da demanda de oxigênio (DO2) para intensidades equivalentes a 120 e 110% da vVO2PICO em CL e CR, respectivamente. Finalmente, esforços...
Abstract: Maximal accumulated oxygen deficit (MAOD) is nowadays taken as the gold standard measure of anaerobic capacity in humans. Namely, the abbreviated procedure known as the procedure #3 by Medbø, seems an interesting testing option for athletes due to practical reasons. But besides the relevance of specificity and the increasing use of portable gas analyzers for the assessment of aerobic parameters in field conditions, information on MAOD assessment, precision or validity in track tests are not available. Thus, the aims of this study were: i) to assess MAOD and its precision in runners by means of the procedure #3 adapted to the track; ii) to analyze the effects of variations regarding the use of resting VO2 (VO2REP) on the regressions used in the MAOD estimation and; iii) to analyze the concurrent validity of such measure by comparing the values attained in free (CL) and resisted (CR) running tests. In a two-week period, 8 sprint runners (21.5 ± 3.2 years; 71.5 ± 6.0 kg; 180 ± 6 cm and 4.9 ± 1.3 % fat) were subjected to 6 experimental sessions separated by 48 - 72 h on a 400 m track, being 3 evaluations carried out in the CL and 3 in the CR conditions. In the later one, a mobile device was used in order to impose an horizontal resistance of 4 % body weight to the subjects. In all tests the VO2 was monitored by means of a portable analyzer using telemetry. Incremental tests were performed in both conditions for the assessment of VO2PICO and vVO2PICO. Linear regressions between velocity and VO2 were determined from 3 submaximal efforts lasting 6 min between ~75 to 96% VO2PICO with and without VO2REP at zero velocity for the estimation of oxygen demand (DO2) for intensities of 120 and 110% vVO2PICO in CL and CR, respectively. Finally, exhaustive bouts at such intensities were carried out being the MAOD computed as the difference between total DO2 (DO2TOT) and accumulated oxygen uptake (VO2AC). Both in CL and CR, the inclusion of VO2REP...
Doutor
Aristizabal, Castañeda Valeria Natali, and Zapata Andrea Lucía Baldeón. "Determinación de la relación de las exportaciones de Pisco y los factores que propiciaron su internacionalización hacia Alemania y Reino Unido entre el 2013 y el 2017 en el marco del TLC con la Unión Europea." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/651666.
Full textPisco is an exclusively Peruvian spirit produced only with fermented must from Pisco grapes. It is a very high quality product and it is the country's flagship drink. Peru and the European Union signed a Free Trade Agreement which entered into force in 2013, becoming Peru's third largest trading partner. Pisco, with tariff item 2208.20.21.00, increased its exports between 2013 and 2017 by 22.97% in FOB value. This research will analyze Germany and the United Kingdom markets due to the fact that the Peruvian Export and Tourism Promotion Commission - PROMPERU is directing its efforts towards these markets and is making strategic plans to stimulate the positioning of Pisco. In view of the aforementioned, the following question was raised: What is the relationship between Pisco exports and the factors that led to its internationalization to Germany and the United Kingdom between 2013 and 2017 within the framework of the FTA with the European Union? To answer it, a multiple linear regression was made with secondary information of the variables: real exchange rate, production, FOB value exported and number of exporting companies. It is concluded that the regression answered the question posed by taking into account the FOB value exported and the number of exporting companies, deducing that these are the major determinants of the internationalization of Pisco towards Germany and the United Kingdom. It is recommended to carry out research covering commercial and marketing aspects to achieve greater participation in these markets.
Tesis
Luis, Orellana Victor Jaime. "Diseño estructural de un edificio de concreto armado, multifamiliar de siete pisos sin sótanos, ubicado en Pueblo Libre." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2020. http://hdl.handle.net/20.500.12404/17834.
Full textThibert, Christine. "Devenir Dame : Le livre de la cité des dames." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29757.
Full textArts, Faculty of
French, Hispanic, and Italian Studies, Department of
Graduate
Ahmed, Baouche Sid. "La importancia de la celebración de Acuerdos Comerciales en la política de Chile en materia de protección de la Indicación Geográfica Pisco." Tesis, Universidad de Chile, 2014. http://www.repositorio.uchile.cl/handle/2250/117378.
Full textEn este estudio de caso se aborda la formulación de la política chilena en materia de protección de la Indicación Geográfica Pisco. Se examina el marco jurídico nacional y su evolución desde la primera normativa adoptada en 1931 antes de abordar la inscripción y la protección de esta indicación en el ámbito jurídico internacional, mostrando la preferencia de Chile por el marco bilateral a través de la inscripción de esta denominación en los acuerdos comerciales preferenciales que ha celebrado. Se muestran las motivaciones de la política de Chile y, en particular, el impacto positivo que ésta tuvo sobre la protección internacional de dicha indicación. Se discuten también las medidas adoptadas por Perú para proteger su indicación geográfica sobre el mismo producto, explicando las diferencias de enfoque y cómo el adoptado por Chile ha logrado un relativo éxito, y cuáles serían sus desafíos futuros.
Freitas, Olga Cristina Rocha de. "Efeitos de pistas contextuais em língua de sinais sobre recordação livre e compreensão de texto narrativo." reponame:Repositório Institucional da UnB, 2009. http://repositorio.unb.br/handle/10482/4672.
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Este estudo investigou os efeitos de exposição do leitor surdo à pista contextual em língua de sinas (início, meio e final de texto narrativo) sobre a compreensão de questões de inferência. Participaram 40 surdos, com faixa etária entre 11 e 35 anos, fluentes em Libras e com conhecimento básico da escrita em Língua Portuguesa, divididos em 4 grupos. A tarefa constituiu de leitura de texto narrativo, recordação livre e teste de compreensão do tipo V ou F. A pista contextual foi apresentada a 3 dos 4 grupos e foram analisados frequência e número médio de respostas corretas. Os resultados mostraram que a apresentação da pista no início ou no final do texto afeta positivamente a produção de inferências sobre aspectos do mesmo. Análise das estratégias de combinação das informações para posterior recordação e produção de inferências sugere efeito de dificuldade da tarefa de reconstrução do texto narrativo. _______________________________________________________________________________ ABSTRACT
This study investigated the effects of deaf readers exposition to contextual cue in the sign language (beginning, middle, and end of a narrative text) about inference matters of comprehension. Participants: 40 deaf persons, from 11 to 35 years old, fluent in sign language, and with a basic knowledge about written Portuguese language that were divided in four groups. The task was about a narrative text reading, free recall, and a true or false comprehension text. The contextual cue had been shown to three from the four groups and the groups were analyzed according to the frequency and the average number of right answers. The results showed that the cues presentation in the beginning or in the end of the text affects the inferences production about the text positively. The information combination strategies analysis to posterior remembrance and inferences productions implies the effect of the reconstructions narrative text task difficulty.
Cardinal, Pierre. "Pistes pour l'étude des fragments araméens du Livre d'Hénoch : l'apport des perspectives narratives et énonciatives de l'Hénoch éthiopien." Doctoral thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/26516.
Full textThe diachronic research on the Book of Enoch seems to rest in idle mode. Looking back at the past decades, one realizes that the new evidence provided by the Dead Sea Scrolls has not changed the way we see the Book of Enoch today. Although fragments from a so-called Book of Giants have been discovered, Milik’s edition of the manuscripts relies on the assumption that the aramaic text is the archetype of the version that we know in Ethiopic (and in greek to some extent). In other words, we still don’t know much about the formation of the Book of Enoch, despite the discovery of Enoch’s fragments among the scrolls. There is a need to change the approach to those manuscripts. To improve our knowledge, we need to take a step back, and read those fragments with a fresh look. A new study can take advantage of the multispectral scans that are now available. But this reading must be conducted using an appropriate method for interpreting the results. The manuscripts unearthed from the cave 4 reveal to be extremely fragmentary. Word by word comparison of the aramaic text with the Ethiopic witnesses cannot provide sufficient clues to support a diachronic study. Literary analysis provides criteria to discriminate between meaningless differences and those that can shed light on the form the book once had in aramaic. In the course of this study, we will first determine if the 3rd and the 4th books were combined the same way as they are in Ethiopic. Afterwards, the study will focus on the figure of the Righteous in the 5th book. Then, the narrative of the fallen angels will be considered anew.
Chocce, Falla Juan Carlos. "Análisis y diseño de un edificio multifamiliar de concreto armado de 7 pisos sin sótanos ubicado en el distrito de Pueblo Libre." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2020. http://hdl.handle.net/20.500.12404/18842.
Full textTeixeira, Lais Helena. "Ocorrência de amebas de vida-livre, dos gêneros Acanthamoeba e Naegleria, em pisos de ambientes internos, na Universidade Católica de Santos, SP, Brasil." Universidade Católica de Santos, 2008. http://biblioteca.unisantos.br:8181/handle/tede/551.
Full textAmebas de vida-livre, particularmente as pertencentes aos gêneros Acanthamoeba e Naegleria, são amplamente distribuídas no mundo todo e têm sido consideradas como parasitas oportunísticos de humanos. Elas são resistentes a extremas condições de temperatura e de pH, bem como ao cloro e a outros tipos de desinfetantes. Cistos desidratados podem sobreviver por vários anos numa variedade de hábitats, incluindo solo, poeiras domésticas, esgoto, água fresca, água de torneira, lagos naturais e artificiais e piscinas inadequadamente (ou adequadamente) cloradas, onde as amebas podem se alimentar de bactérias contaminantes. O gênero Acanthamoeba pode ocorrer comensalmente na região nasofaríngea de indivíduos saudáveis, mas pode ser considerada uma infecção oportunista, ocorrendo principalmente em indivíduos debilitados, alcoólatras, doentes crônicos, pessoas submetidas a tratamento com drogas imunossupressoras e pacientes imunocomprometidos. No Brasil, já foram descritos casos de ceratites e encefalites amebianas, mas poucos são os relatos da presença delas no ambiente. O objetivo do trabalho é o de avaliar a ocorrência de amebas de vida-livre, dos gêneros Acanthamoeba e Naegleria, em ambientes fechados, e para tal foi escolhido a Universidade Católica de Santos, com a finalidade de se conhecer o universo desses organismos, em lugares com alta densidade circulante de indivíduos aparentemente saudáveis. Foram coletadas 200 amostras de poeira dos pisos, no período de 5 meses, com auxílio de swab esterilizado, e transferidas para tubos de ensaio com 5ml de solução salina de Page, usada como transporte. Essa solução foi semeada em ágar não nutriente com 50μl de caldo BHI ou solução de Page enriquecida com E. coli ATCC 25922, viva, com crescimento de 18 a 24h. Os tubos foram incubados a 37ºC e a leitura foi realizada a cada 48h por até 20 dias, em microscópio óptico comum, com aumento de 400X. As amostras positivas foram repicadas para novos tubos com ágar não nutriente da mesma forma. A identificação foi feita pela observação de cistos e trofozoítas baseando-se no tipo de movimento e nos critérios morfológicos. Nas amostras analisadas, observou-se 28% de positividade com cistos e trofozoítas sugestivos para os gêneros Acanthamoeba e Naegleria. As amebas de vida-livre mais encontradas foram as do gênero Acanthamoeba provavelmente por serem organismos comensais e ubiquitários, e por apresentarem maior resistência à ação dos desinfetantes utilizados na limpeza da universidade. Já o gênero Naegleria foi encontrado menos frequentemente talvez por estarem associados a locais úmidos, e as amostras terem sido, em sua grande maioria, coletadas de locais secos.
Dugaz, Lucien. "Le Livre des fais d'armes et de chevalerie de Christine de Pizan. Édition critique." Thesis, Sorbonne Paris Cité, 2019. http://www.theses.fr/2019USPCA050.
Full textThe principle study of this doctoral thesis is the critical edition of the last unedited text of Christine de Pizan, the Livre des fais d’armes et de chevalerie. It was composed in 1410, at the outbreak of the first civil war posing Bourguignons against Armagnacs, three years after the assassination of Louis d’Orléans on the orders of Jean the Fearless and five years preceding the Battle of Azincourt. This forgotten masterpiece of Pizan was destined generally to educate young men of arms, and particularly for the instruction of the Dauphin, Louis de Guyenne. The Fais d’armes, a re-writing as much as it is a compilation, was upon its publication a reference work on chivalry, soliciting the authority of Vegetius, Valerius Maximus, Frontinus, L’Arbre des batailles by Honorat Bovet, as well as other oral sources that remain anonymous. This critical edition will allow us to fill significant gaps in the christinienne production of the specula principum and will be equally useful to medievalists as much to jurists and to specialists of military history.This edition, which goes back to the origins of the text, leans on the first exhaustive study of the entire textual tradition (25 text sources, in printed and manuscript forms) that identifies several different versions by the author. This discovery adds a new dimension to the study of this text when considered alongside versions that were re-worked for political purposes. What’s more, the establishment of a stemma codicum allows us to define the relationship between two manuscript families : Family A, which respects Christine de Pizan’s auctorialité ; and Family B, which obliterates her name and femininity.Furthermore, the edition of the text in Middle French, accompanied by philological,linguistic and historical notes and commentaries, allows for future stylistique andlinguistic studies on the author-at-work, changing her text on two occasions. Research on her sources also reveal Christine de Pizan’s techniques as “compilator”. This study also proposes an edition of quotes from Valerius Maximus and Frontinus as translated by Simon de Hesdin to inspire further reading.The edition includes a codicological description of the 25 manuscripts and printed copies, elements describing historical and literary context, and, finally, a linguistic study that adds another voice to the debate surrounding a manuscript containing the Fais d'armes and the question of its potentially “autographic” nature
Delale, Sarah. "Diamant obscur. Composition et mise en livre de la narration chez Christine de Pizan." Thesis, Paris 4, 2017. http://www.theses.fr/2017PA040164.
Full textFor Christine de Pizan, writing and interpretation do not depend on truth but on plausibility and opinion. Considering this, how can the author lead the reader to the meaning he considers as truth? This study explores the connection between interpretation, genre and form in the narrative works of Christine de Pizan – form being understood as a disposition, as the intellectual and material layout of the narration. Manuscripts supervised by Christine form the basis of our study, enriched by later manuscripts and early editions printed before the 19th century. From 1400 to 1408, the seven dits, the prose livres and the Mutacion de fortune reflect two different models of narrative meaning. The dits give an implicit lesson. The author and the narrator’s persona are too subjective to be answerable for the moral sense; the meaning is transmitted by the book’s disposition. Interpretations arise from coherency, incoherencies and ambiguities lying in the text. In the prose livres, the subject is presented as good or evil by the author; narrator and disposition explicitly convey the same meaning. Both models can be characterized as a resolving dynamics: aspiring to go past doubt, the writing contains narrative procedures that frame the interpretation as much as possible. The author’s character itself is constructed to prompt the reader’s empathy and identification; it constitutes a place from which to update a universal meaning
Carvalho, Sílvia Daniela Ribeiro. "Otimização de um piso de ginástica artística." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/21166.
Full textA presente dissertação teve por objetivo a realização de ensaios de impacto por queda livre em três protótipos de praticáveis de ginástica artística. Inicialmente foi realizada uma revisão bibliográfica direcionada para os materiais e tecnologias utilizadas no desenvolvimento de equipamento desportivo e da influência que estes equipamentos têm no desempenho e na segurança dos seus utilizadores. Foi testada uma primeira solução construtiva que serviu de base para comparações com as outras amostras testadas e para a verificação dos modelos físicos considerados. A 2ª e 3ª série de ensaios foram direcionadas para o estudo da influência da rigidez e flexibilidade do sistema global no desempenho do praticável de ginástica. Desenvolveram-se um conjunto de programas que facilitaram o processamento e análise dos dados experimentais. Encontraram-se dois métodos que permitem o cálculo da força máxima de impacto através dos dados de deslocamento medidos pelo encoder, um deles é a aplicação da 2ª lei de Newton e outro é a aplicação do teorema energia-trabalho. As três amostras testadas revelaram deflexão superior à permitida pela norma FIG: IV-MAG1-01.01.2016, contudo, permitiram estabelecer métricas de forma a facilitar o desenvolvimento de novas soluções que se enquadrem nas exigidas pela Federação Internacional de Ginástica (FIG).
The present dissertation objective is the accomplishment of impact tests by free fall, in three prototypes of an artistic gymnastics floor. A bibliographic review was conducted, focusing on materials and technologies used for development of sports equipment. and influence, and these resources on the performance and safety of its users. The first constructive solution that was tested, served as the basis for comparisons with the other samples tested and for the application of the physical models. The 2nd and 3rd series of tests were conducted to study the influence of the rigidity and flexibility of the global system on the performance of the gymnastics floor. A set of programs were developed to help the process of analysis of experimental data. Two methods were used to calculate the maximum impact force through the displacement data measured by the encoder, one of which is an application of Newton's 2nd law, and the other, an application of the Energy-Work theorem. The three tested prototypes revealed a deflection superior to the one allowed by the FIG: IV-MAG1-01.01.2016 norm.
Silva, Fabiana Maria da 1987. "Análise da aplicação de resíduo de borracha de pneus em piso tátil intertravado de concreto." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267711.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Tecnologia
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Resumo: O reaproveitamento de resíduos na construção civil tem sido uma alternativa viável para diminuir o consumo de materiais naturais e a disposição inadequada dos resíduos no meio ambiente. Neste trabalho avaliou-se o reaproveitamento de resíduo de borracha de pneus, proveniente do processo de recauchutagem, em substituição parcial do agregado miúdo natural, para a produção de pisos táteis intertravados de concreto. O piso tátil de concreto é uma peça utilizada na pavimentação, que permite a percepção do ambiente ou rotas acessíveis, proporcionando mais segurança e autonomia para as pessoas com deficiência visual. A substituição foi feita em relação à massa da areia nas proporções de 10%, 20%, 30%, 40% e 50%. As seguintes propriedades do concreto foram investigadas: consistência no estado fresco, resistência à compressão, resistência à tração na flexão, absorção de água, índice de vazios, massa específica do concreto endurecido, resistência à abrasão, resistência ao impacto e análise de microestrutura. Embora a grande limitação do uso da borracha de pneus como agregado no concreto seja a redução das resistências mecânicas, os traços com até 50% de substituição atingiram ótimos valores de resistência à compressão e resistência à tração na flexão e apresentaram melhores resultados de resistência à abrasão. A utilização do resíduo de borracha de pneus, em substituição parcial da areia natural no concreto para a produção de piso tátil, além de contribuir com a sustentabilidade na construção civil, por meio da economia de extração de matérias-primas e redução do descarte e acúmulo inadequado de pneus inservíveis, proporcionou melhorias a algumas propriedades importantes para a eficiência e qualidade do piso tátil de concreto
Abstract: The reuse of waste in construction has been a viable alternative to reduce the consumption of natural materials and the improper disposal of waste on the environment. In this work recycled tire rubber (crumb rubber) was used as aggregate in concrete to produce tactile paving block. The concrete tactile paving block allows perception of the place or accessible routes, providing more security and independence for people with visual disabilities. The crumb rubber was used to replace sand by mass at the level of 10%, 20%, 30%, 40% and 50%. The concrete characterization was performed by testing its consistency, compressive strength, flexural strength, water absorption, porosity, density, abrasion resistance, impact resistance and microstructure analysis. Although the major limitation using the crumb rubber as aggregate in the concrete is to reduce the mechanical strength, the mixtures with up to 50% of substitution reached optimal values ??of compressive strength and flexural strength and showed a better abrasion resistance. The use of crumb rubber in partial replacement of natural sand in concrete to produce tactile paving block, proved to be a viable alternative. Besides contributing to construction sustainability, minimizing the extraction of raw materials, and reducing improper disposal and accumulation of scrap tires, provided improvements to some important properties that assure the efficiency and quality of the concrete tactile paving block
Mestrado
Tecnologia e Inovação
Mestra em Tecnologia
Valente, André Rocha. "Análise e resolução de problemas de quebra da ferramenta na operação de corte da abertura livre em anéis de ferro fundido nodular." Master's thesis, 2015. http://hdl.handle.net/10316/99201.
Full textEste trabalho, realizado na MAHLE – Componentes de Motores S.A., teve como objetivo a análise e resolução do problema da quebra da ferramenta de corte (fresa) na maquinagem da abertura livre em anéis de pistão de ferro fundido nodular. Mais concretamente, pretendia-se descobrir a causa raíz do problema e tomar medidas corretivas de forma a reduzir os custos através de diminuição do consumo e aumento de rendimento. Para tal, começou-se por averiguar de onde vinha o problema e qual era o problema exatamente. De seguida, utilizando o método de deteção analítica de falhas da Kepner-Tregoe, é feita uma análise do problema. Após descobrir que a causa raiz do problema é o ferramental inadequado, alterou-se o seu diâmetro de forma a reduzir o desgaste e aumentar o apoio aos anéis. De seguida, são propostas três soluções para o problema secundário que aparece com a implementação da medida corretiva, que é o excesso de rebarba nas pontas do anel. O trabalho finaliza-se com uma análise de resultados, financeiros e de produtividade, que mostram que com esta medida corretiva obtêm-se ganhos muito elevados.
The purpose of this work, carried out at MAHLE – Componentes de Motores S.A., was to analyse and solve the problem of cutting tool (milling cutter) breakage during the machining of the free gap of nodular cast iron piston rings. More specifically, the aim was to discover the root cause of the problem and take measures to reduce costs through lower consumption and higher process yield. To do so, the first move was to find out where there was a problem and what exactly the problem was. Next, using Kepner-Tregoe’s analytic troubleshooting, a problem analysis is conducted. Having found out that the root cause of the problem is the tooling being inappropriate, its dimensions were changed so that wear was reduced and rings support was better. Then, three solutions to fix the excessive burr on the rings, which is a secondary problem existent due to the corrective measure, were proposed. This work ends up with a result analysis, both financial and productive, which show that with such corrective measure the savings are very high.
Carotenuto, Concetta. "I capitoli V-VII del Liber Abaci di Leonardo Pisano detto il Fibonacci, traduzione e commento." Tesi di dottorato, 2014. http://www.fedoa.unina.it/9770/1/File%20tesi%20fibonacci_01_02.pdf.
Full textPinto, Bárbara Francisca de Matos. "Efeito das pistas autogeradas e estratégias de agrupamento na memória do testemunho." Master's thesis, 2020. http://hdl.handle.net/1822/69567.
Full textUm Relato Livre inicial parece importante para obter informação precisa de testemunhas, sendo utilizado em entrevistas investigativas apropriadas como a Entrevista Cognitiva. Contudo, estudos recentes mostraram que estratégias de agrupamento (Recordação por Categorias e Recordação por Locais), em que as pistas utilizadas para orientar o relato são fornecidas pelo entrevistador, aumentaram a quantidade de informação evocada em comparação ao Relato Livre. Considerando os benefícios das pistas autogeradas para a memória de palavras, o objetivo principal deste estudo foi testar a sua eficácia quando inseridas nestas estratégias. Os participantes viram um vídeo de um crime e foram entrevistados 48 horas depois segundo uma das estratégias: Relato Livre, Recordação por Categorias fornecidas, Recordação por Categorias autogeradas, Recordação por Locais fornecidos ou Recordação por Locais autogerados. Adicionalmente, foram medidas diferentes variáveis cognitivas que poderiam influenciar o relato, mas apenas a capacidade de memória de trabalho influenciou a recordação de detalhes incorretos e a precisão. Os resultados não mostraram diferenças na quantidade de informação recordada e precisão do relato entre as condições. Contudo, a precisão foi elevada para todos os grupos. Assim, este estudo revela a existência de técnicas tão eficazes como o Relato Livre, estando disponíveis para serem utilizadas pelo entrevistador consoante as necessidades da investigação policial.
An initial Free Recall seems important to obtain accurate information from witnesses and is used in appropriate investigative interviews such as the Cognitive Interview. However, recent studies have shown that clustering strategies (Category Clustering Recall and Location Clustering Recall), in which the cues used to guide the report are provided by the interviewer, increased the amount of information recalled compared to the Free Recall. Considering the benefits of self-generated cues in memory for words, the main objective of this study was testing its effectiveness when inserted in these strategies. Participants watched a video of a crime and were interviewed 48 hours later according to one of the following strategies: Free Recall, provided Category Clustering Recall, self-generated Category Clustering Recall, provided Location Clustering Recall or self-generated Location Clustering Recall. Additionally, different cognitive variables were measured that could influence the report, but only working memory capacity influenced the recall of incorrect details and accuracy. The results showed no differences in amount of information recalled and accuracy of recall between the conditions. However, accuracy was high for all groups. Thus, this study reveals the existence of techniques as effective as a free report, being available for use by the interviewer according to the needs of the police investigation.
Sume, David. "The architectural nature of the illustrated books of Iliazd : (Ilia Zdanevich, 1894-1975)." Thèse, 2018. http://hdl.handle.net/1866/21735.
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