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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.
1

Displaying cliques in graph drawings

Yamamoto, Yosuke 19 September 2010
Relational information represented by graphs can be found in various areas. Understanding completely connected groups of items is useful in studying relational information. However, when displayed in the form of a graph drawing, completely connected graphs contain quadratically many edges relative to the number of their vertices. This may increase the difficulty in identifying useful information, such as maximal cliques, in the graph. This thesis attempts to display the maximal cliques and the cliques contained in two or more maximal cliques in a given graph in an explicit and clear fashion. In order to achieve the goal, the thesis defines two models, the clique-star and the reduced-clique-star, that represent given input graphs. Both representations reduce the number of edges of the original graphs while maintaining the information about the maximal cliques. This thesis shows that six classes of graphs that can be represented by planar clique-star representations, and four classes of graphs that can be represented by planar reduced-clique-star representations. It also empirically shows that small graphs or either very sparse or very dense graphs maybe beneficially represented by planar clique-star or planar reduced-clique-star representations.
2

Displaying cliques in graph drawings

Yamamoto, Yosuke 19 September 2010 (has links)
Relational information represented by graphs can be found in various areas. Understanding completely connected groups of items is useful in studying relational information. However, when displayed in the form of a graph drawing, completely connected graphs contain quadratically many edges relative to the number of their vertices. This may increase the difficulty in identifying useful information, such as maximal cliques, in the graph. This thesis attempts to display the maximal cliques and the cliques contained in two or more maximal cliques in a given graph in an explicit and clear fashion. In order to achieve the goal, the thesis defines two models, the clique-star and the reduced-clique-star, that represent given input graphs. Both representations reduce the number of edges of the original graphs while maintaining the information about the maximal cliques. This thesis shows that six classes of graphs that can be represented by planar clique-star representations, and four classes of graphs that can be represented by planar reduced-clique-star representations. It also empirically shows that small graphs or either very sparse or very dense graphs maybe beneficially represented by planar clique-star or planar reduced-clique-star representations.
3

Analysis of three ventilation systems in an office: Mixing, displacement and confluent jet ventilation system. : Analysis of temperature gradient, tracer gas and thermal comfort.

Peña Malo, Julio J., Panjkov Zafra-Polo, Igor January 2013 (has links)
Scandinavian countries have always been the first in investigation and development of new ventilation systems. In the last years, engineers from Finland and Sweden are studying a new ventilation system known “Confluent jet ventilation system” which is trying to improve displacement and mixing results. The aim of this thesis master is to study the behaviour of three different ventilation systems, mixing ventilation, displacement ventilation and confluent jet ventilation, in an office room by mean of three analysis, temperature gradient analysis, tracer gas analysis and thermal comfort analysis, and to compare them to know if the new one, confluent jet, increases the performance of mixing or displacement ventilation system. In case of confluent jet ventilation system, there were two different cases: one with the supply air device at 2.2m high, and the other with it at 1.7m high to compare which one was the correct position and gets the best results. For each studied system 3 different cases were analyzed, having the same parameters each one of them for the three ventilation systems.The measurements were taken in an office room located in the laboratory of the University of Gävle, Högskolan I Gävle, in collaboration with the Finnish company specialized in ventilation systems, Stravent. For temperature gradient analysis, ten sensors took temperatures from the low level, 0.1m high, to the top level of the room, 2.4m, during all the time that the other measurements were being taken. For tracer gas analysis, a data logger took measurements of the contaminant concentration, N2O, from when the contaminant was thrown into the room until it disappeared following a Decay curve. Lastly, in thermal comfort analysis 4 transducers took measurements each 12 minutes of air temperature, operative temperature, air velocity and air humidity are measured in 6 different points inside the office room and at 3 different heights, 0.1m, 1.1m and 1.7m. After analyzing the results of temperature gradient, tracer gas and thermal comfort the best results were obtained by confluent jet system with the supply air device at 2.2m in case of temperature gradient, since the difference of temperatures between the low and the top level were the minimum and contaminants and indoor air were not in a homogeneous mixing. In case of tracer gas, the results about air change efficiency were not the expected because they showed a well-mixed situation for every system and it should not have been like that. It was caused for the influence of a cooling system situated in the ceiling of the room and the temperature difference between inside and outside the room that affected more than expected. Finally, in thermal comfort analysis, the best results were obtained by confluent jet ventilation, therefore in case of the supply air device at 2.2m and in case of it at 1.7m. To sum up, taking account the results achieved, the confluent jet ventilation got the best results and showed that it is a new ventilation system that must be taken in consideration in the following buildings. Between supply air device at 2.2m and 1.7m the results were very similar, but a bit better in case of the highest height.
4

Computer simulations of temperature and flow field in industrial spaces using confluent jets air supply method

Viguer Torres, Luis, Fatas Perez, Borja January 2012 (has links)
Ventilation systems are closely connected to indoor environment. In industrial spaces it has a major impact due to air quality and thermal comfort requirements, which leads into health and economy improvements. Confluent jets ventilation system has been assess in Söderhamn Eriksson, a machinery company located in Mariannelund, Sweden, since it has been proved as the best ventilation performance. Moreover this system is worthy for both heating and cooling purposes, although just heating case will be developed in this thesis. By means of modelling software such as Gambit and Airpak, the company’s case could have been analyzed via Computational Fluid Dynamics (CFD) software, i.e. Fluent. The analyzed models were accepted after a thorough study of meshing parameters, bearing in mind computational limitations. Every temperature data gathered from simulation results has been verified with infrared camera figures taken at the company, thus contributing to reach reliable conclusions. As it is inferred from previous papers and empiric theory, the flow field observed is also justified. Then, thermal comfort and air quality analysis relies on consistent facts. It has been found that current ventilation at the company is slightly misadjusted, since supplied air’s temperature and velocity are slightly off point. Therefore, it is recommended to reduce these values to reach better working environment.
5

Experimental and Numerical Investigations of Confluent Round Jets

Svensson, Klas January 2015 (has links)
Unconfined multiple interacting confluent round jets are interesting from a purely scientific point of view, as interaction between neighboring jets brings additional complexity to the flow field. Unconfined confluent round jets also exist in various engineering applications, such as ventilation supply devices, sewage disposal systems, combustion burners, chemical mixing or chimney stacks. Even so, little scientific attention has been paid to unconfined confluent round jets. The present work uses both advanced measurement techniques and computational models to provide deeper understanding of the turbulent flow field development of unconfined confluent round jets. Both Laser Doppler Anemometry (LDA) and Particle Image Velocimetry (PIV) have been used to measure mean velocity and turbulence properties within two setups, consisting of a single row of 1×6 jets and a square array of 6×6 confluent jets. Simulations using computational fluid dynamics (CFD) of the 6×6 setup were conducted using three different Reynolds Averaged Navier-Stokes (RANS) turbulence models: the standard k-ε, the RNG k-ε and the Reynolds Stress model (RSM). The results from the CFD simulations were compared with experimental data. The employed RANS turbulence models were all capable of accurately predicting mean velocities and turbulent properties in the investigated confluent jet array. In general the RSM and k-ε std. models provided smaller deviations between numerical and experimental results than the RNG k-ε model. In terms of mean velocity the second-order closure model (RSM) was not found to be superior to the less complex standard k-ε model. The validated CFD model was employed in a parametrical investigation, including five independent variables: inlet velocity, nozzle diameter, nozzle edge-to-edge spacing, nozzle height and the number of jets in the array. The parametrical investigations made use of statistical methods in the form of response surface methodology. The derived response surface models provided information on the principal influence and relative importance of the investigated parameters within the investigated design space. The positions of the jets within the array strongly influence both mean velocity and turbulence. In all investigated setups the jets experience merging and combining. Square arrays also include considerable jet convergence, which was not present in the 1×6 jet array. Due to the jet convergence in square arrays the turbulent flow field, especially for jets far away from the array center, is affected by mean flow curvature. Jets located along the sides of square jet arrays experience strong jet-to-jet interactions that result in considerable jet deformation, shorter potential core, higher turbulent kinetic energy and faster velocity decay compared to other jets. Jets located at the corners of the array do not interact as strongly with neighboring jets as do the jets along the sides. The locations of merging and combined points differ considerably between different jets and different jet configurations. As the jets combine a zone with uniform stream-wise velocity and low turbulence intensity forms in the center of square jet arrays. This zone has been called Confluent Core Zone (CCZ) due to its similarities with the potential core zone of a single jet. Within the CCZ the appropriate scaling length changes from nozzle diameter to the effective source diameter. The parametrical investigation showed that nozzle diameter and edge-to-edge nozzle spacing were the most important of the investigated parameters, reflecting a strong dependence on dimensionless jet spacing, S/d0. Higher S/d0 delays both merging and combining of the jets and leads to a CCZ with lower velocity and longer downstream extension. Increasing the array size leads to a reduced combined point distance, a stronger inwards displacement of jets in the outer part of the array, and reduced entrainment near the nozzles. A higher inlet velocity was found to increase the jet convergence in the investigated square confluent jet arrays. Nozzle height generally has minor impact on the investigated response variables.
6

Evolução paleogeomorfológica do Estado do Rio de Janeiro e arredores (cadernos de mapas)

Ribeiro, Luziane Santos [UNESP] 27 October 2010 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:32:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-10-27Bitstream added on 2014-06-13T19:02:52Z : No. of bitstreams: 1 ribeiro_ls_dr_rcla.pdf: 6745290 bytes, checksum: 960fce1714eda51ceedc21a67c907211 (MD5) / Este trabalho teve como objetivo reconstruir a paleogeomorfológica do Estado do Rio de Janeiro pelo Método das Isobases Confluentes. Foram empregadas técnicas de Geoprocessamento para otimização do Método, que até então era desenvolvido manualmente. Em conseqüência disso sua aplicação, além de morosa, ficava restrita a áreas de pequena extensão. Mediante a otimização e sistematização do Método chegouse à paleosuperfície de ordem 7 para o Estado do Rio de Janeiro, a que correspondeu a eventos registrados no Cretáceo. As paleosuperfícies que se seguiram até a superfície erosiva atual mostraram a evolução tectno-estrutural pela qual o sudeste brasileiro passou, evidenciando as etapas do evento rifteamento que encaixou o rio Paraíba do Sul em sua posição atua. Verificou-se que Geoprocessamento se aplica eficientemente como ferramenta para obtenção de paleosuperfícies, as quais podem ser empregadas na reconstrução de cenários e estudo evolutivos ecogeodinâmicos / This study aimed to reconstruct the paleogeography Rio de Janeiro State by the Method of Confluent Isobases. GIS techniques were employed to automate the Method, which until then was developed manually. As a result their application was restricted to areas of small extent and it was extremely slow. Through automation and systematization of the method reached the paleosurfaces of order 7 for the State of Rio de Janeiro, which corresponded to events in the Cretaceous. From the seventh paleosurface to the current erosive surface showed step by step the developments structural and tectonic of the Brazilian southeast. The most important event was the establishment of the rift of Paraíba, wich changed all physiographic aspects in the area. It was found that GIS is an effective tool for obtaining paleosurfaces, which can be used in the reconstruction of evolutionary scenarios and in the study of dinamic of landscape
7

Evolução paleogeomorfológica do Estado do Rio de Janeiro e arredores (cadernos de mapas) /

Ribeiro, Luziane Santos. January 2010 (has links)
Volume 2 possui mapas / Orientador: Jairo Roberto Jiménez-Rueda / Banca: Juércio Tavares de Mattos / Banca: Archimedes Perez Filho / Banca: Maria da Gloria Alves / Banca: Claudio Limeira Mello / Resumo: Este trabalho teve como objetivo reconstruir a paleogeomorfológica do Estado do Rio de Janeiro pelo Método das Isobases Confluentes. Foram empregadas técnicas de Geoprocessamento para otimização do Método, que até então era desenvolvido manualmente. Em conseqüência disso sua aplicação, além de morosa, ficava restrita a áreas de pequena extensão. Mediante a otimização e sistematização do Método chegouse à paleosuperfície de ordem 7 para o Estado do Rio de Janeiro, a que correspondeu a eventos registrados no Cretáceo. As paleosuperfícies que se seguiram até a superfície erosiva atual mostraram a evolução tectno-estrutural pela qual o sudeste brasileiro passou, evidenciando as etapas do evento rifteamento que encaixou o rio Paraíba do Sul em sua posição atua. Verificou-se que Geoprocessamento se aplica eficientemente como ferramenta para obtenção de paleosuperfícies, as quais podem ser empregadas na reconstrução de cenários e estudo evolutivos ecogeodinâmicos / Abstract: This study aimed to reconstruct the paleogeography Rio de Janeiro State by the Method of Confluent Isobases. GIS techniques were employed to automate the Method, which until then was developed manually. As a result their application was restricted to areas of small extent and it was extremely slow. Through automation and systematization of the method reached the paleosurfaces of order 7 for the State of Rio de Janeiro, which corresponded to events in the Cretaceous. From the seventh paleosurface to the current erosive surface showed step by step the developments structural and tectonic of the Brazilian southeast. The most important event was the establishment of the rift of Paraíba, wich changed all physiographic aspects in the area. It was found that GIS is an effective tool for obtaining paleosurfaces, which can be used in the reconstruction of evolutionary scenarios and in the study of dinamic of landscape / Doutor
8

Estudo do meio físico e caracterização da capacidade de suporte natural da região de Pirassununga/SP / Study of the physical environment and characterization of natural support capacity in the region of Pirassununga/SP

Lima, Meire Mateus de [UNESP] 19 April 2016 (has links)
Submitted by Meire Mateus de Lima (meiresaa@yahoo.com.br) on 2016-06-15T17:09:02Z No. of bitstreams: 1 Dissertacao_Meire_Lima.pdf: 40136639 bytes, checksum: e41d780e6e958ac46d1eda56e59ccdfb (MD5) / Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-06-16T13:41:52Z (GMT) No. of bitstreams: 1 lima_mm_me_rcla.pdf: 40136639 bytes, checksum: e41d780e6e958ac46d1eda56e59ccdfb (MD5) / Made available in DSpace on 2016-06-16T13:41:52Z (GMT). No. of bitstreams: 1 lima_mm_me_rcla.pdf: 40136639 bytes, checksum: e41d780e6e958ac46d1eda56e59ccdfb (MD5) Previous issue date: 2016-04-19 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Os crescentes usos e ocupação do meio e utilização dos recursos naturais têm mostrado a necessidade do desenvolvimento de estudos integrados dirigidos a uma adequação das atividades do homem com a capacidade de suporte natural do meio físico. Desta forma, este projeto objetiva, para a região de Pirassununga, localizada no centro-nordeste paulista, aplicar um procedimento metodológico que auxilie a compartimentação do meio físico, mediante o uso de geotecnologias e aspectos geodinâmicos, visando o planejamento do uso e ocupação da terra, com fins de definir a suscetibilidade natural à erosão e a capacidade de suporte natural do meio. Tais informações poderão ser utilizadas pelos produtores rurais e órgãos públicos no intuito de orientar a tomada de decisões quanto às medidas de controle para os problemas ambientais encontrados, para a recuperação de áreas impactadas, bem como orientações para o uso e ocupação sustentável da terra, reduzindo os impactos negativos. Com base nos resultados das análises de drenagem, do relevo, morfoestrutural, morfotectônica e da evolução paleoambiental (isobases confluentes) nota-se que a região apresenta uma grande densidade de drenagem, variação altimétrica e de classes de declividade, assim como um intenso fraturamento, o que gera paisagens de abatimento e soerguimento de blocos (horsts e grabens), altos e baixos estruturais deformados e altos e baixos topográficos intercalados, exigindo, deste modo, indicações de manejo específicos para cada área. A análise da evolução da paisagem, por meio das isobases confluentes, contribui ainda para melhor definir o fraturamento regional e o domínio de processos colúvio-aluvionares, formadores das associações de solos. A integração dos diversos temas desenvolvidos neste trabalho possibilitou a geração das cartas temáticas de suscetibilidade natural à erosão, indicação de áreas para preservação ambiental e áreas para destinação dos resíduos antrópicos, sólidos e líquidos, buscando a classificação mais adequada da capacidade de suporte natural da área. A partir dos resultados constatou-se que na região de Pirassununga predominam as suscetibilidades naturais à erosão baixas e moderadas, assim como uma alta capacidade de suporte natural, acompanhando as planícies de inundação atual/subatual e os planaltos muito baixos a médios. Merecendo atenção especial a porção leste da área, por apresentar capacidade de suporte predominantemente moderada e a porção oeste, por apresentar capacidades de suporte de moderadas a muito baixas, podendo ser utilizadas de forma restrita, requerendo, todavia, estudos mais específicos para melhor dirigir tal ocupação. Considerando ainda que, com a aplicação de técnicas inadequadas de uso, manejo do solo e disposição de resíduos, a suscetibilidade natural à erosão pode aumentar significativamente e, a capacidade de suporte natural do meio ambiente ficar comprometida. Desta forma, recomenda-se que os manejos, considerando as peculiaridades de cada local individualmente, sejam definidos em função das recomendações de profissionais capacitados em cada atividade, diminuindo assim os problemas para o uso e ocupação do meio físico da região. / The increasing use and occupation of the environment and utilization of the natural resources has presented the need for the development of integrated studies driven towards an adaptation of the activities performed by people with natural support for the physical environment. This way, this project has the objective, for a region of Pirassununga, located in the center northeast of São Paulo, to apply a methodological procedure that aids the partitioning of the physical environment, with the use of geotechnologies and geodynamic aspects, seeking the planning of the soil occupation use, to define the natural susceptibility to the erosions and the capacity of natural environment support. Such information can be utilized by farmers and public agencies in the intent orientate the decision making of the control measures for the environmental problems found, for the recovery of impacted areas, as well as in orientating for sustainable soil occupation use, reducing the negative impacts. With basis on the analysis results of drainage, relief, morphostructural, morphotectonic and the paleoenvironmental (confluent isobases), it is noticed that the region presents a great density of drainage , altimetry variation and gradient classes, as well as intense fracturing, which generates a landscape of abatement and uplift of blocks (horst and grabens), high and low structural deformation and high and low interleaved topographic, demanding, in this way, specific handling indications for each area. The landscape evolution analysis, by confluent isobases, contributes to better define the regional fracturing and the command of colluvium-alluvial processes, makers of the soil association. The integration of the various developed themes in this work enabled the creation of themed letters for natural susceptibility to erosions, indication of environmental preservation areas and areas for anthropic residue destination, solid and liquid, seeking the more adequate classification of the natural support of the capacity for the area. With the results, it was found that in the region of Pirassununga prevails the natural susceptibility to low and moderate erosions, as well as high capacity for natural support, following the current and not so current flood plains and the very low to medium plateaus. Deserving special attention to the east portion of the area for presenting support capacity mainly moderate and the west portion for presenting a moderate to very low support capacity, being able to be utilized in a restrict manner, requiring, however, more specific studies to better drive such occupation. Considering that, with the application of inadequate techniques of use, soil handling and residue disposal, the natural susceptibility to erosions can increase significantly and the natural support capacity of the environment can become compromised. This way, it is recommended that handling, considering the peculiarities of each individual location, be defined due to recommendation of capacitated professionals in each activity, thus decreasing the problems for the use and occupation of the physical environment of the region.
9

Numerical and experimental study of confluent jets supply device with variable airflow

Andersson, Harald January 2019 (has links)
In recent years, application of confluent jets for design of ventilation supply devices has been studied. Similarly, numerus studies have been made on the potential and application of variable air volume (VAV) in order to reduce the energy demand of ventilation systems. This study investigates the combination of supply devices based on confluent jets and VAV, both in terms of the nearfield flow behavior of the device and the impact on thermal comfort, indoor air quality and energy efficiency on a classroom-level space when the airflow rate is varied. The method used in this study is an experimental field study where the confluent jets-based supply devices were compared to the previously installed displacement ventilation. The field study evaluated the energy efficiency, thermal comfort and indoor air quality of the two systems. In the case of the confluent jets supply devices, airflow rate was varied in order to see what impact the variation had on the performance of the system for each airflow rate. Furthermore, the confluent jets supply devices were investigated both experimentally and numerically in a well insulated test room to get high resolution data on the particular flow characteristics for this type of supply device when the airflow rate is varied. The results from the field study show nearly uniform distribution of the local mean age of air in the occupied zone, even in the cases of relatively low airflow rates. The airflow rates have no significant effect on the degree of mixing. The thermal comfort in the classroom was increased when the airflow rate was adapted to the heat load compared to the displacement system. The results lead to the conclusion that the combination of supply devices based on confluent jets can reduce energy usage in the school while maintaining indoor air quality and increasing the thermal comfort in the occupied zone. The results from the experimental and numerical study show that the flow pattern and velocity in each nozzle is directly dependent on the total airflow rate. However, the flow pattern does not vary between the three different airflow rates. The numerical investigation shows that velocity profiles for each nozzle have the same pattern regardless of the airflow rate, but the magnitude of the velocity profile increases as the airflow increases. Thus, a supply device of this kind could be used for variable air volume and produce confluent jets for different airflow rates. The results from both studies show that the airflow rate does not affect the distribution of the airflow on both near-field and room level. The distribution of air is nearly uniform in the case of the near-field results and the room-level measurement shows a completely uniform degree of mixing and air quality in the occupied zone for each airflow rate. This means that there is potential for combining these two schemes for designing air distribution systems with high energy efficiency and high thermal comfort and indoor air quality. / Under senare tid har applikation av Confluent jets för design av tilluftsdon studerats. Många studier har även utförts över potentialen av att applicera variabelt luftflöde (VAV) för att minska energianvändningen i ventilationssystem. Denna studie undersöker möjligheten att kombinera Confluent jets-don med VAV, både med avseende på den lokala flödesbilden och dess påverkan på termisk komfort, luftkvalitet och energieffektivitet i en klassrumsmiljö där luftflödes varieras. Denna studie baseras dels på en experimentell fältstudie där tilluftsdon baserade på Confluents jets jämfördes med befintliga deplacerande tilluftsdon. Fältstudien utvärderade energieffektiviteten, den termiska komforten och luftkvaliteten för båda typerna av tillluftsdon. Confluent jets-donen testades under varierat luftflöde för att se påverkan av flödesvariationen på ventilationens prestation under de olika flödena. Utöver fältstudien testades Confluent jets-donen experimentellt och numeriskt i ett välisolerat test-rum för få den detaljerade flödeskarakteristiken för den här typen tilluftsdon vid varierat luftflöde. Resultaten från fältstudien visar på en jämn fördelning av den lokala luftsmedelåldern i vistelsezonen, även för fallen med relativt låga luftflöden. Luftflöden har ingen signifikant effekt på omblandningen. Den termiska komforten i klassrummet ökade när luftflödet anpassades efter värmelasten jämfört med de deplacerande donen. Slutsatsen från fältstudien är att kombinationen av VAV och Confluent jets-don kan användas för att minska energianvändningen på skolan och bevara luftkvaliteten och den termiska komforten i vistelsezonen. Resultaten från den experimental och numeriska studien visar luftflödet och lufthastigheten i varje enskild dysa är direkt beroende på det totala luftflödet genom donet. Dock är flödesfördelningen mellan dysorna oberoende av de tre olika luftflödena. Den numeriska undersökningen visar att flödesprofilen för varje dysa är konstant trots att flödet varieras, men amplituden för varje profil ökar med en höjning av luftflödet. Det betyder att tilluftsdon av den här typen kan användas med VAV för att producera Confluent jets för olika luftflöden. Resultaten från båda studierna visar att luftflöde inte påverkar fördelningen av luften vare sig längs luftdonen eller på rumsnivå. Fördelningen av luften är nästan helt jämn längs donen och på rumsnivå är omblandningen och luftkvalitet den samma för varje luftflöde. Det betyder att det finns potential för att kombinera det här två teknikerna för att designa luftdistribueringssystem med hög energieffektivitet och hög termisk komfort med god luftkvalitet.
10

Le modèle confluent de l'agression sexuelle appliqué à quatre paramètres de la carrière criminelle sexuelle

Laporte, Jean-François 11 1900 (has links)
Ce mémoire consiste en une reproduction et une extension du Modèle Confluent de l’Agression Sexuelle (MCAS) de Neil Malamuth. Le MCAS est un des seuls modèles développementaux de l’agression sexuelle d’hommes sur des femmes adultes à avoir été validé empiriquement. Dans ce modèle, deux trajectoires (la promiscuité sexuelle et la masculinité hostile) convergent et mènent à l’agression sexuelle. Pour la première fois, ce modèle est appliqué séparément à quatre paramètres de la carrière criminelle sexuelle (gravité, fréquence, précocité, spécialisation) au sein d’un échantillon d’agresseurs sexuels de femmes adultes judiciarisés (n=180). Les quatre modèles qui en résultent s’ajustent bien aux données. Tous les liens postulés dans le MCAS sont validés dans ce mémoire, à une exception. En effet, contrairement aux résultats obtenus par Malamuth, une seule des deux trajectoires du modèle présente un lien significatif avec chacun des paramètres de la carrière criminelle sexuelle à l’étude. La trajectoire de la promiscuité sexuelle est liée à la précocité et à la non-spécialisation (lien négatif avec la spécialisation) alors que la trajectoire de la masculinité hostile est associée à la gravité et à la fréquence. Ces résultats sont congruents avec une approche typologique des agresseurs sexuels de femmes adultes. Chacune des deux trajectoires du MCAS englobe des caractéristiques spécifiques à certains types de violeurs (opportunistes, colériques, sadiques) qui, pour leur part, se distinguent quant aux paramètres de leur carrière criminelle sexuelle. / The purpose of this thesis is to replicate and extend Malamuth’s Confluence Model of Sexual Aggression (CMSA). The CMSA is one of the few empirically validated developmental models of men’s sexual aggression against women. In this model, sexual aggression is resulting from the convergence of two paths (sexual promiscuity and hostile masculinity). For the first time, in this thesis, the CMSA is applied to four parameters of the sexual criminal career (seriousness, frequency, age of onset, specialization) within a sample of convicted rapists (n=180). Each of the four resulting models yielded a good fit of the data. All but one of the relationships hypothesized in the CMSA were replicated in this thesis. Indeed, our results suggest that only one of the CMSA’s paths is related to each of the sexual criminal career parameters tested in this thesis. The sexual promiscuity path is related to age of onset and non-specialization (sexual promiscuity being negatively related to specialization) while the hostile masculinity path is related to seriousness and frequency. Our results are congruent with a typological approach of rapists. Each of the two CMSA’s paths is operationalized using some specific characteristics which are known to be linked to certain types of rapists (opportunistic, angry, sadistic types). In turn, those types of rapists present distinctive relationships to the sexual criminal career parameters investigated in this thesis.

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