Dissertations / Theses on the topic 'Rocky DEM'
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Smith, Emily Katherine. "Modeling Blister Rust Incidence in Whitebark Pine at Northern Rocky Mountain Alpine Treelines: A Geospatial Approach." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/33040.
Full textMaster of Science
Smith-McKenna, Emily Katherine. "Geospatial Variation of an Invasive Forest Disease and the Effects on Treeline Dynamics in the Rocky Mountains." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/24200.
Full textPh. D.
Busta, Michal. "Analýza namáhání vybraných konstrukčních částí bagru při provozu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443770.
Full textLopez, Philippe. "Comportement mécanique d'une fracture en cisaillement : analyse par plan d'expériences des données mécaniques et morphologiques connues sur une fracture /." Thèse, Chicoutimi : [Talence, France] : Université du Québec à Chicoutimi, Université Bordeaux 1, 2000. http://theses.uqac.ca.
Full text"...pour obtenir le grade de docteur de l'Université Bordeaux I - France et comme exigence partielle au philosophiae doctor de l'Université du Québec à Chicoutimi - Canada. Spécialité: mécanique" La thèse avec ses annexes sont accessibles via le curriculum vitae, section "COMMUNICATIONS". CaQCU CaQCU Document électronique également accessible en format PDF. CaQCU
Barber-Kersovan, Alenka. "Vom "Punk-Frühling" zum "Slowenischen Frühling" der Beitrag des slowenischen Punk zur Demontage des sozialistischen Wertesystems." Hamburg Krämer, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2655733&prov=M&dok_var=1&dok_ext=htm.
Full textWessling, Albin. "Towards Discrete Element Modelling of Rock Drilling." Licentiate thesis, Luleå tekniska universitet, Material- och solidmekanik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83911.
Full textKoleini, Mehran. "Engineering geological assessment and rock mass characterization of the Asmari formation (Zagros range) as large dam foundation rocks in southwestern Iran." Thesis, University of Pretoria, 2012. http://hdl.handle.net/2263/24303.
Full textThesis (PhD)--University of Pretoria, 2012.
Geology
unrestricted
Wishart, Jeremy Scott. "Overtopping Breaching of Rock-Avalanche Dams." Thesis, University of Canterbury. Civil Engineering, 2007. http://hdl.handle.net/10092/1193.
Full textAlipaz, Sillo Antonio Jhimmy. "Definición ideológica del rock cristiano." Universidad Mayor de San Andrés. Programa Cybertesis BOLIVIA, 2011. http://www.cybertesis.umsa.bo:8080/umsa/2011/alipaz_san/html/index-frames.html.
Full textNoorian-Bidgoli, Majid. "Strength and deformability of fractured rocks." Doctoral thesis, KTH, Mark- och vattenteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-155719.
Full textQC 20141111
Varela, Valdez Alberto. "Mechanical behavior of rock joints : influence of joint roughness on its closure and shear behavior." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0184/document.
Full textThe shear behavior of rock joints under constant normal stress is studied using Discrete Element Method (DEM). The respective influences of joint surface roughness, elasticity of medium, fracture of surface asperities, and level of compression load on the closure and shear behaviors of rock joints are particularly analyzed. For the first time the roughness of the joints considered as self-affine is use dwith DEM to study the friction of rock joints, the roughness is described through three parameters:self-affine roughness exponent, self-affine correlation length and height variance. Using a numerical algorithm based on spectral method, eight isotropic self-affine surfaces corresponding to different roughness are generated. Latter, numerical surfaces are used as molds to generate the discrete elements surfaces. The discrete element modeling is premised on a preliminary calibration of the elastic properties performed on a representative elementary volume and on the implementation of the fracture properties (elliptic fracture criterion expressed in stress) describing with a reasonable accuracy the quasi-brittle fracture behavior of mortar (used in previous experimental tests). On this basis and once the roughness surfaces implemented in DEM, the simulations of the compression/closure test are performed on the eight joints and this for two compression stress levels: 14 MPa and 21 MPa. Then, the eight DEM joints are sheared along two perpendicular directions. For each shear direction and each level of compression stress, the joints are tested through three different mechanical models: 1) rigid model in which the medium cannot deform excepted at the contact surface of joints, 2) elastic model in which the medium can deform in its volume and 3) elastic-fracture model in which the medium can deform in its volume and the bondsbetween discrete elements can failed according to the elliptic fracture criterion. The use of these three mechanical models allows studying systematically the influence of the roughness alone (rigidmodel), the influence of elasticity and roughness (elastic model) and finally, the combined effect ofthe joint roughness, of the elasticity and of the fracture (elastic-fracture model). The study of the results obtained from the DEM simulations is followed by an energetic analysis allowing theestimation of the evolutions, as a function of the shear displacement, of the elastic energy stored inthe system, of the friction energy, of the work related to the joint dilatancy and of the energy dissipated by internal damping of the DEM
En esta tesis se estudia la fricción en juntas rocosas utilizando el Método de Elementos Discretos (DEM). En particular, se estudia la influencia de la rugosidad de las superficies de la junta, la elasticidad, la fractura, y el nivel de carga de compresión sobre el comportamiento de cierre y de cizalla de las juntas rocosas. Por primera vez la rugosidad de las juntas considerada como auto-afín esutilizada para estudiar la fricción de juntas rocosas, la rugosidad se describe mediante tres parámetros: el exponente de rugosidad, la longitud de correlación auto-afín y la varianza de alturas. Mediante un algoritmo de computadora basado en métodos espectrales, ocho superficies autoafines isotrópicas con diferente rugosidad fueron creadas. Posteriormente, las ocho superficies fueron utilizadas como moldes para generar las juntas utilizando elementos discretos. Antes de realizar las simulaciones de compresión y cizallaura, se calibraron las propiedades elásticas y defractura (criterio de fractura elíptico basado en esfuerzos) de las juntas numéricas a los datos experimentales (obtenidos previamente) de unas muestras de mortero mediante la utilización de un volumen elemental representativo (REV). Una vez que las propiedades mecánicas de las juntas se obtuvieron mediante la calibración del REV, se realizaron las pruebas de cierre (prueba de compresión) de las ocho juntas DEM. Se utilizaron dos niveles de esfuerzo de compresión para laspruebas de cierre: 14 MPa y 21 MPa. Después, las ocho juntas DEM fueron cizalladas en dos direcciones mutuamente perpendiculares. Para cada dirección de cizalla y cada nivel de esfuerzo decompresión (14 y 21 MPa), las juntas fueron cizalladas usando uno de los tres modelos mecánicos siguientes: 1) un modelo rígido, en el que las juntas no se pueden deformar, excepto en su superficie,2) un modelo puramente elástico, en el que las juntas se pueden deformar en todo su volumen y 3)un modelo elástico con fractura en el que las juntas se pueden deformar en su volumen y, si elesfuerzo sobre las uniones entre partículas excede cierto nivel de esfuerzo máximo, las uniones se rompen de una manera irreversible. El uso de estos tres modelos mecánicos nos permitirá estudiar de manera sistemática: la influencia de la rugosidad (modelo rígido), la influencia de la elasticidad y rugosidad (modelo puramente elástico) y, finalmente, el efecto combinado de la rugosidad de las juntas, la elasticidad y la fractura (modelo elástico con fractura). El estudio de los resultados obtenidos de las simulaciones DEM es seguido por una análisis energético el cual permite estudiar la evolución de los diferentes tipos de energía en función del desplazamiento de cizalla: energía elástica almacenada en el sistema, energía de fricción entre elementos discretos, el trabajo relacionado conla dilatación de la junta y la energía disipada por el amortiguamiento interno del DEM
Crombez, Vincent. "Pétrofaciès, sédimentologie et architecture stratigraphique des roches riches en matière organique : étude multi-approches des formations Montney et Doig (Trias inferieur et moyen, Alberta - Colombie Britannique, Canada)." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066055/document.
Full textThe aim of this study is to improve the understanding of sedimentary organic matter heterogeneities in unconventional plays, based on outcrop and well data from the Triassic Montney and Doig Formations. The workflow comprises four steps: (1) well correlations, based on sequence stratigraphy, (2) Rock-Eval VI and ICP-MS/AES analyses of outcrop, core and cutting samples, (3) integration of the analyses results in the stratigraphic framework, (4) a process-based forward modeling of the stratigraphic evolution of the basin with DIONISOS in order to test multiple scenarios of primary productivity and basin restriction.The stratigraphic architecture of the Montney and Doig Fms has been subdivided into four sequences gathered in two second order cycles (A and B) separated by a major time gap (approx. 2 My). This study shows that the deposition of the Triassic series on the Western margin of North America took place in an active structural context and not on a passive margin. The integration of the geochemical and petrographic analyses results in the stratigraphic framework shows that significant organic accumulations are located in the FSST of sequence A and in the TST of sequence B. DIONISOS shows a major drop of the sedimentary inputs between Lower and Middle Triassic that is interpreted to be linked to the regional geodynamic evolution and the early stages of the Canadian Cordillera orogeny. Lastly, this study emphasizes the first order control of the geodynamic evolution on organic rich accumulation
Mehrapour, Mohammad Hadi, and Mohammad Hadi Mehrapour. "Development of a Failure Criterion for Rock Masses Having Non-Orthogonal Fracture Systems." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/625679.
Full textEinbrodt, Ulrich Dieter. "Experimentelle Untersuchungen zum Gitarrensound in der Rockmusik /." Frankfurt am Main ; Bern ; Paris : P. Lang, 1997. http://catalogue.bnf.fr/ark:/12148/cb369650304.
Full textHinojosa, Gisel. "Identidad visual y difusión del General Rock." Bachelor's thesis, Universidad Nacional de Cuyo. Facultad de Artes y Diseño, 2014. http://bdigital.uncu.edu.ar/6166.
Full textFil: Hinojosa, Gisel. Universidad Nacional de Cuyo. Facultad de Artes y Diseño.
Arriagada, César. "Rotations tectoniques et déformation de l'avant arc des Andes centrales au cours du Cénozoïque = Rotaciones tectónicas y deformación del antearco en los Andes centrales durante el cenozoico /." Rennes : Géosciences Rennes, Université de Rennes 1, 2004. http://catalogue.bnf.fr/ark:/12148/cb392302035.
Full textMention parallèle de titre ou de responsabilité : Rotaciones tectónicas y deformación del antearco en los Andes centrales durante el cenozoico. Textes en français et en anglais. Bibliogr. p. 301-308. Notes bibliogr. Résumé en français, en anglais et en espagnol.
Kumar, Amit. "Predicting HPGR performance and understanding rock particle behavior through DEM modelling." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/46538.
Full textShimizu, Hiroyuki. "Distinct element modeling for fundamental rock fracturing and application to hydraulic fracturing." 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/120827.
Full textBonnelye, Audrey. "Etude des propriétés physiques et mécaniques des argilites : de la déformation en laboratoire aux failles naturelles." Thesis, Cergy-Pontoise, 2016. http://www.theses.fr/2016CERG0858.
Full textShales or clays are defined as rock having a large proportion of clay minerals. Their physical and mechanical properties are of interest for the study of the hydro-mechanical behavior of faults in the uppermost crust but also for the understanding of the cap rocks of hydrocarbon reservoirs or for the expertise of the durability of radioactive waste storage.This thesis proposes two complementary approaches to understand the organization of the deformation in this type of material, a first purely mechanical on undisturbed samples and the second focusing on the physical properties of deformed materials. During this thesis, we studied Tournemire shales (IRSN tunnel, Aveyron, France).The first part consists in triaxial tests. We determined the failure envelopes of three sets of core samples with different orientations with respect to bedding (0 °, 45 ° and 90 °). For each orientation, seven experiments were performed at different confining pressures (2.5, 5, 10, 20, 40, 80, 160 MPa). The influence of the strain rate was determined by comparing experiments with different strain rates extending over two orders of magnitude (between 〖10〗^(-7) s^(-1) and 〖10〗^(-5) s^(-1)). During the experiments, the P and S wave velocities were recorded from different angles with respect to the bedding to quantify the evolution of the anisotropy of the elastic properties according to the imposed stress.This section allows to highlight the importance of the orientation of bedding relatively to the principal stress applied on our samples. It is noted for example that the weakest orientation is 45 ° and 90 ° the strongest orientation. In addition, a micromechanical model based on the "wing crack" theory helps to explain the mechanical anisotropy of our argillites by the anisotropy of the fracture toughness K_Ic.Moreover, it is found that changes in the anisotropy of the elastic properties also depends on the bedding orientation. During compression, the 90 ° orientation has significant variations up to a reversal of the anisotropy, whereas the elastic wave velocities show little changes for 0 ° orientation. These variations were quantified by Thomsen parameters. The study of elastic velocities and of microstructures of our samples highlight the importance of the plastic processes such as reorientation of minerals during deformation.The second part consists of a petrophysical study (P wave velocities, ASM, density, saturation, porosity) of samples from a borehole drilled through a fault zone. The goal here is to quantify the variation of these properties as we approach the fault core.A protocol of sampling and measurement was established to realize a complete study of drillings. The protocol includes a first serie of measures directly in the field in order to overcome the problems linked to the preservation of samples (especially for porosity measurements / density / saturation). Subsequently, samples were taken for measurements both in the context of this thesis (P wave velocities and ASM), but also in other laboratories (study of the mineralogical composition, CT-scan).Three fault zones were identified from field observations:• An intact zone characterized by samples with no or very little fracturing• A damaged zone that includes a large number of calcified fractures• A fault core zone characterized by a complete breakdown (no apparent bedding) and color variations.Although these areas were determined on observation criteria, our study demonstrates an own physical signature for each zone of this fault with an important decrease in the anisotropy of the samples from fault core. In addition, bedding rotation with similar mechanisms to those observed at the microstructural scale during the experimental deformation was observed
Mellies, Gabriele, and Gabriele Mellies. "Two case studies of excavations in fractured rock." Master's thesis, Université Laval, 2009. http://hdl.handle.net/20.500.11794/21030.
Full textLa stabilité des excavations dans les roches fracturées est influencée, entre autres, par le régime structural, qui est inhérent à la roche. Divers outils sont disponibles pour les analyses de stabilité, mais la qualité des résultats dépend considérablement des données d’entrée disponibles et des outils utilisés. Dans ce mémoire, deux études de cas sont présentées, qui étudient l'influence de la représentation de données structurales sur l'analyse de stabilité. La première étude de cas traite de la stabilité d'une pente de roche le long d'une route près de Fleurimont, qui a subi des effondrements de dièdre. L’objectif était de découvrir si les effondrements pourraient avoir été prédits et d'évaluer la probabilité de la rupture de dièdre le long de la pente. Plusieurs analyses d'équilibre limite ont été effectuées, y compris une analyse déterministe rétrospective de deux ruptures de dièdres, et une analyse probabiliste des dièdres individuels. De plus, une analyse probabiliste de système de joints a été effectuée en utilisant les modèles 3D de système de joints, qui ont été générés avec des données de terrain. Les données nécessaires pour les analyses ont été recueillies sur place. Les résultats d’analyse rétrospective ont indiqué l'instabilité potentielle des dièdres observés, et les approches probabilistes ont confirmé l'occurrence des effondrements de dièdre le long de la pente, mais ils ont également démontré que la probabilité d'effondrements semblables est faible. Les résultats ont démontré qu'une analyse de données exhaustive en utilisant plusieurs outils d'analyse est requise pour obtenir une évaluation fiable du comportement de la roche. La deuxième étude de cas discute de la stabilité des galeries à la mine souterraine LaRonde de l'Agnico Eagle, qui sont concernées par de grandes déformations à cause de la convergence des parois. L'analyse de la convergence observée s'est concentrée sur la génération d'une série de modèles numériques 2D selon la méthode des éléments finis, visant à reproduire le mécanisme d'effondrement et les déformations résultantes. La foliation in situ a été reproduite par des joints, qui ont été introduits explicitement dans le modèle. Les données structurales requises ont été rassemblées sur place. Les modèles ont été calibrés avec les données de convergence disponibles. Les résultats de modélisation numérique ont atteint une bonne concordance avec les observations sur place. Les deux profils caractéristiques observés et l’ordre de grandeur des déformations mesurées ont pu être reproduits. Il a été démontré que le modèle numérique appliqué est un outil utile pour modéliser les conditions complexes observées à la mine. Plus d'expériences de validation devraient être effectuées, mais la méthode peut potentiellement être employée pour élaborer de meilleures stratégies pour les travaux de développement minier dans des conditions semblables. Les deux études de cas ont démontré l'influence de la représentation des données structurales sur l'analyse de données. En outre il a été montré que le choix des outils d'analyse influence les résultats obtenus.
The stability of excavations in fractured rock is influenced among others by the structural order inherent in the rock mass. Various analysis tools are available for stability analysis, but the quality of results depends considerably on the available analysis data and the tools used. In this thesis two case studies of excavations in fractured rock are presented that investigate the influence of structural data representation on the stability analysis. The first case study focused on the stability of a rock slope along a road cut near Fleurimont that has experienced wedge failures. The aim was to find out, if the failures could have been predicted, and to evaluate the probability of wedge failures along the slope. Different limit equilibrium wedge analyses were carried out, including a deterministic back-analysis of two wedge failures and a probabilistic analysis of individual wedges. Furthermore a probabilistic joint system analysis was carried out using 3D joint system models generated out of field data. As part of this work the required analysis data was collected on site. The back-analysis results suggested potential instability of the observed wedges, and the probabilistic approaches confirmed the occurrence of wedge failures along the slope, but also indicated the only low probability for these failures. The results demonstrated that a comprehensive data analysis using various analysis tools is required to reach a reliable assessment of the rock behaviour. The second case study discusses the stability of drifts at Agnico Eagle’s LaRonde underground mine that are affected by large deformations due to rock squeezing. The analysis of the observed drift convergence focused on the generation of a series of numerical 2D finite element models, aiming to reproduce failure mechanism and resulting deformations. The in situ foliation was reproduced by explicitly introducing joints into the model. The required structural data was collected on site. As reference data for the model calibration available convergence data was used. The modelling results reached a good agreement with the observations on site. Both observed characteristic deformation profiles as well as measured deformation magnitudes could be adequately reproduced. It could be demonstrated that the applied numerical model is a useful tool to model the complex squeezing ground conditions observed at the mine. More validation experiments should be carried out, but the method can potentially be used to develop better mine development strategies in similar conditions. Both case studies demonstrated the influence of structural data representation on the data analysis. Furthermore it could be shown that the choice of analysis tools influences the obtained results.
The stability of excavations in fractured rock is influenced among others by the structural order inherent in the rock mass. Various analysis tools are available for stability analysis, but the quality of results depends considerably on the available analysis data and the tools used. In this thesis two case studies of excavations in fractured rock are presented that investigate the influence of structural data representation on the stability analysis. The first case study focused on the stability of a rock slope along a road cut near Fleurimont that has experienced wedge failures. The aim was to find out, if the failures could have been predicted, and to evaluate the probability of wedge failures along the slope. Different limit equilibrium wedge analyses were carried out, including a deterministic back-analysis of two wedge failures and a probabilistic analysis of individual wedges. Furthermore a probabilistic joint system analysis was carried out using 3D joint system models generated out of field data. As part of this work the required analysis data was collected on site. The back-analysis results suggested potential instability of the observed wedges, and the probabilistic approaches confirmed the occurrence of wedge failures along the slope, but also indicated the only low probability for these failures. The results demonstrated that a comprehensive data analysis using various analysis tools is required to reach a reliable assessment of the rock behaviour. The second case study discusses the stability of drifts at Agnico Eagle’s LaRonde underground mine that are affected by large deformations due to rock squeezing. The analysis of the observed drift convergence focused on the generation of a series of numerical 2D finite element models, aiming to reproduce failure mechanism and resulting deformations. The in situ foliation was reproduced by explicitly introducing joints into the model. The required structural data was collected on site. As reference data for the model calibration available convergence data was used. The modelling results reached a good agreement with the observations on site. Both observed characteristic deformation profiles as well as measured deformation magnitudes could be adequately reproduced. It could be demonstrated that the applied numerical model is a useful tool to model the complex squeezing ground conditions observed at the mine. More validation experiments should be carried out, but the method can potentially be used to develop better mine development strategies in similar conditions. Both case studies demonstrated the influence of structural data representation on the data analysis. Furthermore it could be shown that the choice of analysis tools influences the obtained results.
Schiffner, Wolfgang. "Einflüsse der Technik auf die Entwicklung von Rock/Pop-Musik." Hamburg : [Universität Hamburg], 1991. http://books.google.com/books?id=mz1FAAAAMAAJ.
Full textGöras, Jesper. "Klipp den röda tråden : En studie i låtskrivning." Thesis, Luleå tekniska universitet, Institutionen för konst, kommunikation och lärande, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-79327.
Full textSperlich, Regina. "Popularmusik in der digitalen Mediamorphose : Wandel des Musikschaffens von Rock- und elektronischer Musik in Österreich." Wiesbaden Dt. Univ.-Verl, 2007. http://dx.doi.org/10.1007/978-3-8350-5463-9.
Full textScapin, Nikita. "Inventario dei rock glaciers in Val Formazza, Piemonte." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/19897/.
Full textSeca, Jean-Marie. "L'état acide : analyse psycho-sociale des minorités rock." Paris 10, 1987. http://www.theses.fr/1987PA100037.
Full textThis work concerns the process of social recognition of rock groups whose social visibility is very limited. These groups are called rock minorities in reference to the theory of social influence developed by S. Moscovici (social influence and social change, London academic press, 1976). More precisely, acid state's model designates the anomic minorities’ experience of social recognition. The rock minorities are defined as anomic because they are formed in order to create their own code and they depend on majority in regards of their social recognition. So, their code is at the same time a project and a stake of social recognition, it is internal and external. The acid state is manifested: -by a state of social ambiguity (ambivalence) dominated by an indetermination of the minority's goals and code; -by a modern experience of the social effervescence (defined by Durkheim), that is to say a socialization of a sensation (as far as a code) who receives meaning by becoming public. The acid state is a theoretical model of the socialization by means of the practice of a mass art form. This model lightens the understanding of the process of the socio-psychological transformation resulting from the passage of the stage of consumer (even active consumer) to the situation of creator of its own norms. The empirical investigations were realized in a Parisian underground auto-park where rock groups live. A questionary inquiry (106 groups) and an ethnographic approach by collective interviews (44) form the biggest part of the data. The empirical research is completed by a questionary concerning the image of rock groups among Parisian high-school students. The thesis (first volume, 532 pages) is divided in four parts: -the acid state (theoretical construction of the model); -the underground shade (a rock "milieu" description); -the rock fluid (representations of the rock creation and ritual); -the public mystery (representations of the destination of the rock message and audience). The annexe part (second volume) contrains 405 pages
Seca, Jean-Marie. "L'Etat acide analyse psycho-sociale des monorités rock /." Lille 3 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37609830p.
Full textGong, Yiwen. "Toward Better Understandings of Unconventional Reservoirs - Rock Mechanical Properties and Hydraulic Fracture Perspectives." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1605633687308252.
Full textFiroozfar, Ali Reza. "Rock scour in hydraulic laboratory analog scour models." Diss., University of Iowa, 2014. https://ir.uiowa.edu/etd/1456.
Full textMin, Ki-Bok. "Fractured Rock Masses as Equivalent Continua - A Numerical Study." Doctoral thesis, KTH, Land and Water Resources Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3742.
Full textIn this thesis, fractured rock masses are treated asequivalent continua for large-scale analyses of rockengineering projects. Systematic developments are made for thedetermination of equivalent mechanical and hydraulic propertiesof fractured rock masses using a hybrid discrete fracturenetwork - distinct element method (DFN-DEM) approach. Thedetermined equivalent properties are then used for a far-fieldfinite element analysis of the thermo-mechanical impacts on thestress, deformation and permeability of fractured rockssurrounding a hypothetical geological repository of nuclearwaste. The geological data were extracted from the results ofan extensive site investigation programme at Sellafield, UK,conducted by Nirex UK Ltd.
The scale dependencies of the hydraulic and mechanicalproperties were investigated by using multiple realizations ofthe fracture system geometry with increasing model sizes untilproperly defined hydraulic and mechanical representativeelementary volumes (REVs) were reached. The validity of thesecond order permeability tensor and the fourth-ordermechanical compliance tensor were tested for continuum analysesat larger scales. The REV was determined to be around 5 m formechanical and hydraulic data in this study.
Analysis of the stress-dependent mechanical and hydraulicproperties shows that the effect of rock stresses is crucial.The elastic moduli increase significantly with the increase ofstress and an empirical equation of stress-dependent elasticmodulus is suggested based on results of numerical experiments.Calculations of the Poisson's ratios suggest greater valuesthan are normally assumed in practice. Depending on the stateof stress, permeability decreases or increases with increasingcompressive stress. Stress-induced flow channeling effect iscaptured by numerical modeling for the first time and detailedmechanisms of shear dilation of fractures are provided. Basedon the numerical experiments, a set of empirical equations wassuggested for the stress-dependent permeability, consideringboth normal deformation and shear dilation of fractures.
Thermo-mechanical impact on the performance of ahypothetical repository at a far-field scale (5 km by 1 km) wasinvestigated with the stress-dependent equivalent propertiesdetermined at the REV scale. This analysis shows thatmechanical responses vary significantly depending on how themechanical properties were determined. The change ofpermeability due to the thermal loading is, however, notsignificant in this particular case.
The thesis provides a framework for systematic analysis oflarge-scale engineering applications in fractured rock masses,such as geological repositories of nuclear wastes.
Keyword:Fractured rock masses, Equivalent Continuum,Discrete Fracture Network (DFN), Distinct Element Method (DEM),Finite Element Method (FEM), Nuclear Waste Disposal, CoupledThermo-Hydro-Mechanical Processes
Saetta, Valeria. "Micro-seismicity and hydro-mechanics of fractured rock masses : experiments and numerical simulations." Vandoeuvre-les-Nancy, INPL, 2004. http://www.theses.fr/2004INPL039N.
Full textThis dissertation forms part of a larger research field which deals with using seismic monitoring systems to better understand the behavior of natural rock slope appealing to the laboratory and in-situ experiments and the numerical simulation. For this purpose, a small scale rock mass, former instrumented from the geo-hydro-mechanical point of view, bas been chosen for installing a seismic monitoring system. Ln this site, it is possible to easily induce a known hydraulic charging and to measure displacements and pressures in many meaningful points. The results of the in-situ experiments highlight the existence of micro-seismicity induced by a variation of water pressures and the repetitiveness either of the hydro-mechanical and micro-seismic behavior. From results, it bas been hypothesized that the micro-seismic activity onsets when water pressure increases in less permeable zones. The Finite Elements numerical modeling of the site allows to calculate the stress variations due to hydraulic charging and to assess if stress variations could generate seismic sources. Series of cores have been taken from the site in order to tested rock material and rock fractures in laboratory, associated with acoustic emissions. Lt results that little stress variations due to water pressure, calculated for the site, do not explain the micro-seismicity observed in laboratory. A micro-mechanical model using Boundary Elements Method (Displacements Discontinuity Method) which simulates the hydro-mechanical behaviour of rock joints sample under normal compression is proposed taking into account the joint topography. Results confirm the laboratory observations and show that the hydrostatic charging can induce instabilities, when contact areas open, comparable to the ill-situ micro-seismicity
Giouse, Hélène. "Proprietes petrophysiques et resistivite des gres argileux petroliferes." Paris, ENMP, 1987. http://www.theses.fr/1987ENMP0060.
Full textRodríguez, Ocampo Esteban. "Rock incaico: caracterización y reinterpretación de lo local en la escena de rock de la ciudad del Cusco." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2018. http://tesis.pucp.edu.pe/repositorio/handle/123456789/13124.
Full textTesis
Brandl, Emmanuel. "Le rock en région : une sociologie des musiques amplifiées." Besançon, 2004. http://www.theses.fr/2004BESA1031.
Full textIn the early 1980s, regional rock music in France was dominated by an anti-institutional discourse that lead those involved to develop a lifestyle on the margin of traditional cultural institutions. A decade later, professionalism becomes an increasingly integral component of rock music with the growing importance of veritable musical institutions, institutions whose emergence came in part out of growing support of public authorities. Founded on surveys conducted in the Franche-Comté region, a study has attempted to understand better the forces behind this evolution in music characterized by electric amplification. The problem lies within the theory of symbolic domination in relationships and is demonstrated through Pierre Bourdieu's "field" theory. The theory uses an analysis of the changes that is described in terms of a processes of cultural legitimization, and, inseparably, an institutionalization of musical practices. The understanding of the direction of the evolution of amplified music is thus rooted in the social struggles that shape the "territorial field of amplified music", and in the area occupied there by authorities. The comprised hypothesis explains the authorities as not being determinant in the issue of the struggles, but in their outcome. To see our study through to a successful end, we were obliged to construct an analytical model that reconstitutes the totality of the process : before and after the institutionalization. We had to link to Pierre Bourdieu's "field" concept, Howard S. Becker's concept of the "world". Thus the study gives importance to the reading of archives and participant observation and in vivo in order to reconstruct and the structural and behavioral transformations using ethnographic description. The significance of the transformations was gathered from interviews with heads of the musical institutions taken for the study. In this way is became possible to clearly show the mechanisms that accompanied the appearance of a sphere established on the model of sophisticated cultural spheres, and to observe the changes that the institutionalization of amplified music introduced, in the form of sociability and socialization, in the nature itself of musical culture, and, in the same manner, in the meaning that the music embodies for those that live it
Leibetseder, Doris. "Queere Tracks : subversive Strategien in der Rock- und Popmusik /." Bielefeld : Transcript, 2010. http://d-nb.info/99433138X/04.
Full textLEGORRETA, PICHARDO ISELA 217872, and PICHARDO ISELA LEGORRETA. "Rock como acontecimiento. Análisis del consumo cultural del rock en México y Argentina como un elemento para la construcción de la identidad juvenil." Tesis de doctorado, Universidad Autónoma del Estado de México, 2018. http://hdl.handle.net/20.500.11799/98604.
Full textEs un estudio comparativo entre México y Argentina, acerca del Rock como acontecimiento, centrado en la década de los setenta del siglo XX, suficientemente documentado en cuanto a fuentes bibliográficas, con un análisis cualitativo que se acompaña por entrevistas semiestructuradas a personajes que vivieron el rock, ya sea como artistas musicales, escritores o bien promotores de la cultura. Se integra adecuadamente con una reflexión que atraviesa la investigación, centrada en la irrupción de la contracultura y las particularidades en los dos países de referencia.
CONACYT
Pimienta, Lucas. "Effet des Fluides et des Fréquences sur les propriétés élastiques des grès et carbonates." Thesis, Paris, Ecole normale supérieure, 2015. http://www.theses.fr/2015ENSU0002/document.
Full textSeismics or Seismology are powerful tools to investigate Earth's crust. However, both rely on seismic waves that travelled through fluid-saturated sedimentary layers. This work, mainly experimental, aims at understanding the static and dynamic effects of the saturating fluid on the elastic response of clastic rocks.In this framework, two specific studies are emphasized:(i) the rock-fluid physico-chemical interaction, often addressed as the "shear weakening" effect, thought to affect the rock overall elastic response; and (ii) the rock-fluid mechanical interaction, addressed as "frequency effect", thought to induce a dependence of elastic properties to the measuring frequency.Two main rock types are investigated: Sandstone and Limestone. All rock samples are chosen to be isotropic and composed of a dominant mineral content, i.e. quartz for sandstone and calcite for limestone
Bénard, Nicolas. "Le hard rock en France des années 1970 à nos jours : conditions d'émergence, développement et radicalisation." Versailles-St Quentin en Yvelines, 2007. http://www.theses.fr/2007VERS008S.
Full textHard Rock (or Metal) is a musical phenomenon appeared in the beginning of the 1970’s and that, in the 1980’s, splits in several categories. Some of them distinguish themselves with radicalism : death metal spreads representations inspired by horrific literature and movies ; black metal may be inspired by occultism, anticlericalism and nihilism. These trends rise in a particular context of economic, social and moral crisis. As a universal phenomenon, Hard Rock has structured itself around a tight community of artists and fans, with its own codes and rites. As a complex phenomenon, it enlightens on the evolution of the youth behaviours, and on the vision it has of society
Gilles, Guillaume. "Les représentations de la sauvagerie dans le rock'n'roll américain des années 1950, entre mythes et réalités." Thesis, Paris Est, 2012. http://www.theses.fr/2012PEST0011.
Full textThis dissertation analizes the myth of the wild side such as it has been represented in theAmerican fifties through rock ’n’ roll. Teen rebellion is seen as a social fact which stirred up anew representation of the modern wild side, through ideals confronted to the adult world andits own ideals. Then we try to find the reasons why rock ’n’ roll, and more specifically ElvisPresley’s music, appeared as a musical genre which embodied and purveyed that wild side.Analysing two different versions of Hound Dog – the typically African American version of« Big Mama » Thornton and Elvis Presley’s rock ’n’ roll creation – allows us to underline theinnovations brought by rock ’n’ roll and the representations of wilderness : the birth of ElvisPresley’s style, which we can reason through the idea of cross-pollination, then thecrystallisation of a typically wild style that reveals various innovations through thecondensation of various musical elements coming from the most rejected musics in the UnitedStates. Then we explain through music itself how the wild side became a tangible reality inrock ’n’ roll, a creative dynamic and the expression of a « moderate excess ». Finally, weconfront those representations of the wild thing to the music played by Jerry Lee Lewis, LittleRichard and Link Wray. Musicology sheds light on the innovations contained in their ownpersonal styles and the reality of their musical particularities thus allowing us to show thewild side as a crucial thing in the creation of rock ’n’ roll
Figueroa, B. Arturo. "Pioneros del rock chileno 1966 - 1973. Los caminos que se abren. Historia testimonial." Tesis, Universidad de Chile, 2000. http://repositorio.uchile.cl/handle/2250/170893.
Full textEsta memoria busca poner a prueba la capacidad del postulante para realizar entrevistas en profundidad a los protagonistas del período de gestación del rock nacional, de las cuales obtener datos, anécdotas y testimonios que den cuenta del modo en el cual se desarrolló esta expresión musical en esos años. También, la revisión del material periodístico de la época (básicamente revistas) servirá para dar cuenta del rol que jugaron los medios de comunicación directamente ligados a la música juvenil en la difusión o censura de esta expresión rockera. Recopilar una importante cantidad de información para recrear en el texto el ambiente social, económico, circunstancial y artístico en el cual se gestó un movimiento de rock criollo a partir de 1966. Entregar información sobre los centros neurálgicos de la escena, el tipo de público, el carácter de estos músicos y la reacción de su entorno. Descubrir la real dimensión de su alcance como movimiento generacional en su tiempo y revisar la discografía de la época para explicar a quienes no tienen acceso a estos discos de qué se trataban. Debido a que esta memoria de título pretende tener un carácter testimonial para reafirmar los acontecimientos y, además, obtener una narración más ágil para el lector.
Villanueva, Evelyn. "Risk assessment of rock surface spillway erosion using parametric studies." Master's thesis, Mississippi State : Mississippi State University, 2007. http://library.msstate.edu/etd/show.asp?etd=etd-07022007-155027.
Full textVorona, Maxim. "Optimierung des Schneidprozesses und Prognose der relevanten Arbeitsgrößen bei der Gesteinszerstörung unter Berücksichtigung des Meißelverschleißes." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2012. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-96367.
Full textMansier, Thomas Tétu Jean-François. "Identité du rock et presse spécialisée évolution d'une culture et de son discours critique dans les magazines français des années 90 /." Lyon : Université Lumière Lyon 2, 2004. http://demeter.univ-lyon2.fr:8080/sdx/theses/lyon2/2004/mansier_t.
Full textKars, Myriam. "Calibration and Application of the MagEval geothermometer in sedimentary rocks." Thesis, Pau, 2012. http://www.theses.fr/2012PAUU3003/document.
Full textTo evaluate the burial temperature experienced by sedimentary rocks, a wide range of geothermometers is available, based on both organic and inorganic constituents of these rocks. Like all experimental techniques, they show limitations. In this thesis, we used a magnetic approach to estimate burial temperature. In a first part, we studied the magnetic assemblage of selected boreholes over the world to better characterize the magnetic geothermometer MagEval. Two calibrations were established. To assess the relationship between the peak burial temperature experienced by the rocks and their constitutive magnetic minerals, we conducted laboratory heating experiments from 50 to 130°C on unmetamorphosed claystones. The experimental heating showed that nano magnetic minerals are continuously produced with temperature. In a second part, we investigated rockmagnetic properties of sedimentary rocks from two geological plays of petroleum interest : the Grès d’Annot basin in SE France (burial temperature 60-250°C) and the fold-and-thrust belts of the Valley & Ridge Province in the Appalachians, USA (burial temperature _120-200°C). These studies suggested an evolution of the main magnetic minerals with temperature. Magnetite, nanogoethite and pyrrhotite are mainly formed. All the conducted analyses lead us to propose an evolution of the magnetic minerals as a function of the maturity of the rocks and temperature
Barnekow, Peter. "Volcanic Rocks from Central Italy: An Oxygen Isotopic Microanalytical and Geochemical Study." Doctoral thesis, [S.l.] : [s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=961354194.
Full textClasson, Johan, and Johan Dahlström. "Prissättning av Konserter : Är det Rock & Roll att Prisdiskriminera?" Thesis, Karlstad University, Division for Business and Economics, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-150.
Full textSvensk musikindustri har under de senaste årtiondena åtnjutit stora framgångar på den internationella marknaden. Export Music Sweden grundades för att stötta och marknadsföra svensk populärmusik utomlands. VD Christer Lundblad sade 2003 att intäkter från konserter ökar kraftigt. Anledningar till detta kan vara att den ökande illegala nedladdningen av musik ger ett ökat ekonomiskt utrymme för konserter, samt att människor idag värderar upplevelser högre än tidigare. Eftersom mer pengar spenderas på konserter blir prissättningen mer betydelsefull. Ur ett rent ekonomiskt perspektiv borde konsertbiljetter prissättas för att maximera vinsten. Ett sätt att göra detta är att prisdiskriminera. Vi har funnit att detta inte görs i så stor utsträckning inom kon-sertindustrin, vilket har lett oss till att ta reda på varför så inte är fallet.
För att ta reda på varför inte prisdiskriminering sker i större utsträckning har vi intervjuat sju personer inom de grupper, i konsertindustrin, som påverkar prissättningen. Dessa grupper är artister, management, turnéproduktionsbolag och skivbolag. Vi har även studerat litteratur rörande prisdiskriminering och konsertindustrin, i form av ve-tenskapliga artiklar, böcker och rapporter.
Uppsatsen diskuterar hur prisdiskriminering av konserter går till, vilka som är inblandade i prissättningsbeslutet, samt deras syn på prisdiskriminering. Den tar även upp andra faktorer som påverkar prissättningen av konserter.
I uppsatsen kommer vi fram till att det finns två anledningar till att konserter inte prisdiskrimineras i större utsträckning. En anledning är praktisk och innebär att konsertplatsens attribut inte tillåter platsindelning och således prisdiskriminering. Den andra anledningen bygger på konsertarrangörers lättja samt artisters invändningar mot pris-diskriminering. Vi redogör även, utifrån undersökningens resultat, för att utvecklingen pekar på att konserter kommer att prisdiskrimineras i större utsträckning i framtiden.
Swedish music industry has, during the latest decades, been highly successful interna-tionally. Export Music Sweden, ExMS was founded to support and market Swedish music abroad. ExMS Managing Director Christer Lundblad said in 2003 that the income made from concerts is growing rapidly. The reason for that development might be that the illegal downloading of music leave people more money left to spend on concerts. Furthermore, the development might spawn from the fact that people value experiences higher than before. Moreover, when more money is spent on concerts the pricing becomes more important than ever. Concert tickets should, if seen in an economical perspective, be priced to maximize revenue. One way of doing that is to price discriminate. We have, through a pre-study on the subject, established that concerts are not price discriminated as extensively as they could. That fact has made us curious as to why that is.
In order to find out why concerts are not price discriminated more extensively we have interviewed seven people belonging to groups involved in the pricing process of concerts. These groups are artists, managers, concert arrangement agencies and record labels. Furthermore, we have studied literature on price discrimination and the concert industry.
The thesis discusses the pricing of concerts; which people who is involved in the decisions concerning the pricing of concerts and their views on the subject. In addition, the thesis also contains other factors influencing the pricing of concerts.
In conclusion, we find that there are two reasons explaining why concerts are not price discriminated more extensively. One is practical and involves the fact that some concert venue attributes does not allow price discrimination, since the crowd cannot be divided into different sections. The other reason is the fact that concert arrangement agencies are to comfortable to price discriminate, and that artists are unwilling to price discriminate for different reasons. Furthermore, the thesis’s results indicate that concerts will be price discriminated more extensively in the future.
Unterweger, Sabine. "Expression und Regulation von ROCK in exokrinen Azinuszellen der Ratte." Diss., Ludwig-Maximilians-Universität München, 2013. http://nbn-resolving.de/urn:nbn:de:bvb:19-160311.
Full textAcevedo, Aguilar Jahzeel. "Elementos estéticos e históricos en canciones del rock gótico mexicano." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2014. http://hdl.handle.net/20.500.11799/32224.
Full textOchoa, Madrid Jessica Jasmín. "Análisis sociolingüístico de las canciones del grupo de rock Trémolo." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2007. https://hdl.handle.net/20.500.12672/951.
Full textTesis
Konradsson, Jimmy. "Den moderna svenska pop/rock-låttexten : Grammisvinnare och Håkan Hellström." Thesis, Uppsala universitet, Institutionen för lingvistik och filologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-439062.
Full textRock, Jan-Philipp [Verfasser]. "Ökonomische Analyse des Betrugs in gegenseitigen Vertragsverhältnissen / Jan-Philipp Rock." Frankfurt : Peter Lang GmbH, Internationaler Verlag der Wissenschaften, 2013. http://d-nb.info/1049883160/34.
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