L'objectif de la thèse est de caractériser la variabilité génétique de la tolérance à la chaleur chez le porc P.n r.roissance.Dans un premier temps, l'effet de deux envîrnnnements climatiques (tempéré, TEMP vs. tropical humide, TROP) sur les performances de production et les réponses thermorégulatrices des porcs en croissance a été évalué.Dans un deuxième temps, nous avons caractérisé le déterminisme génétique de l'adaptation à la chaleur chez le porc en croissance.Les 2 analyses ont permis de proposer des régions qui affectent significativement: les caractères de croissance, l'ingestion, l'efficacité alimentaire, l'épaisseur de lard et les caractères de réponse de thermorégulation sur le chromosome sur SSC 2, 5, 8, 10, 11 et 15. Les mutations des gènes MC4R et IGF2 semblent avoir un effet sur les températures corporelles. Des interactions entre ces mutations et des ré ions sur le énome ont été détectées. / The aim of the thesis is to characterize the genetic variability of heat tolerance in pork P.ngrowth.Initially, the effect of two climatic events (temperate, TEMP vs. tropical moist, TROP) on production performance and thermoregulatory responses of growing pigs was evaluated.In a second step, we characterized the genetic determinism of heat adaptation in growing pigs.The two analyzes made it possible to propose regions that significantly affect: growth characteristics, ingestion, feed efficiency, blubber thickness and thermoregulatory response characteristics on the chromosome on SSC 2, 5, 8, 10, 11, and 15. Mutations in the MC4R and IGF2 genes appear to have an effect on body temperatures. Interactions between these mutations and ions on the enome have been detected.

Made available in DSpace on 2014-12-17T14:58:24Z (GMT). No. of bitstreams: 1 IgorLA_DISSERT.pdf: 5014153 bytes, checksum: b4c50270935571b9e1c875a8c15841c3 (MD5) Previous issue date: 2014-02-26 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / In machining of internal threads, dedicated tools, known as taps, are needed for each profile type, diameter, and low cutting speed values are used when compared to main machining processes. This restriction in the cutting speed is associated with the difficulty of synchronizing the tool s rotation speed and feed velocity in the process. This fact restricts the flexibility and makes machining lead times longer when manufacturing of components with threads is required. An alternative to the constraints imposed by the tap is the thread milling with helical interpolation technique. The technique is the fusion of two movements: rotation and helical interpolation. The tools may have different configurations: a single edge or multiple edges (axial, radial or both). However, thread milling with helical interpolation technique is relatively new and there are limited studies on the subject, a fact which promotes challenges to its wide application in the manufacturing shop floor. The objective of this research is determine the performance of different types of tools in the thread milling with helical interpolation technique using hardened steel workpieces. In this sense, four tool configurations were used for threading milling in AISI 4340 quenched and tempered steel (40 HRC). The results showed that climb cut promoted a greater number of machined threads, regardless of tool configuration. The upcut milling causes chippings in cutting edge, while the climb cutting promotes abrasive wear. Another important point is that increase in hole diameter by tool diameter ratio increases tool lifetime / Na usinagem de roscas internas, ferramentas dedicadas, conhecidas como machos r?gidos s?o necess?rios para cada tipo de perfil e di?metro, al?m de reduzidos valores de velocidade de corte quando comparado aos principais processos de usinagem. Esta restri??o na velocidade de corte est? associada ? dificuldade de sincroniza??o da rota??o e velocidade de avan?o da ferramenta no processo. O fato restringe a flexibilidade e torna os tempos de usinagem longos diante da manufatura de componentes com roscas. Uma alternativa as restri??es impostas pelos machos r?gidos na usinagem de roscas ? o fresamento com a t?cnica de interpola??o helicoidal. A t?cnica ? a fus?o de dois movimentos: rota??o e interpola??o helicoidal. As ferramentas podem ter diferentes configura??es: uma ?nica aresta ou m?ltiplas arestas (no sentido axial, radial ou em ambos). Contudo, o fresamento de roscas com a t?cnica de interpola??o helicoidal ? relativamente novo e restritas pesquisas existem sobre o tema, fato que promove desafios para sua ampla aplica??o no ambiente de manufatura. O objetivo desta pesquisa ? determinar o desempenho dos diferentes tipos de ferramentas no fresamento de roscas com a t?cnica de interpola??o helicoidal em a?os endurecidos. Neste sentido, quatro ferramentas com diferentes configura??es foram utilizadas para usinagem de roscas em a?o AISI 4340 no estado temperado e revenido (40 HRC de dureza). Os resultados mostraram que a utiliza??o do corte concordante possibilitou a usinagem de um maior n?mero de roscas, independentemente do tipo de ferramenta. A utiliza??o do corte discordante causou avaria de lascamento nas arestas de corte, enquanto que o corte concordante promoveu desgaste abrasivo. Outro ponto relevante ? que o aumento da rela??o di?metro do furo e di?metro da ferramenta possibilitou incremento da vida da ferramenta

Abstract In this thesis, methods to process ultrafine ferritic (UFF) structures in steels, i.e. grain sizes below about 3 μm have been investigated. It is shown here, in accordance with the results in the literature, that a steel with a UFF grain size can be obtained by two methods, more or less convenient to mass production: deformation-induced ferrite transformation from fine-grained austenite (the DIF route) and the static recrystallization of various heavily cold-worked initial microstructures (the SRF/SRM route). In the present work, the influencing factors in the processing of UFF structure in the DIF route have been systematically studied in four low-carbon steels: one C-Mn steel and Nb, Nb-Ti and Nb-high Ti microalloyed steels. A high strain, a low deformation temperature close to Ar3 and a fine prior austenite grain size are beneficial to promote the formation of UFF grains. Especially by using complex pretreatments to refine the prior austenite grain size, cold rolling, repeating the low-temperature reheating cycle or using martensitic initial microstructure, a UFF grain size can be obtained in these steels at the strain of 1.2 (70% reduction) at 780 °C. By controlling the cooling rate, the type of the second phase can be adjusted. When using the static recrystallization route, it was found that UFF is difficult to obtain from a single-phase ferrite, but it is relatively readily obtained from deformed pearlite, bainite or martensite, especially in high-carbon steels with 0.3–0.8%C. In deformed pearlite, the cementite lamellae fragmented and spheroidised in the course of heavy deformation can provide numerous nucleation sites by the particle stimulated nucleation mechanism and retard the subgrain and recrystallized grain growth. Nucleation and retardation of grain growth are effective also in deformed bainite, martensite or high-carbon tempered martensite, as discussed in detail in the work. The thermal stability of UFF grained steels was tested and found to be generally excellent, but it varies depending on the processing method. The UFF structure obtained by the SRM route has a thermal stability somewhat weaker than that of the DIF route. For a given steel, UFF grains may show different grain growth modes, related to the dispersion of second phase particles. In the DIF structure, abnormal grain growth occurs at 700 °C after about 2.5 h, while in the SRM structure, normal grain growth takes place slowly at 600 °C. Carbides on the grain boundaries seem to play an important role in inhibiting grain coarsening. No coarse-grained zone was formed at the HAZ of electron beam or laser welded seams, as performed at low heat inputs (up to 1.5 kJ/cm) on thin strips. The hardness even increased from the base metal towards the HAZ and the weld metal in all seams as an indication that they were hardened during the rapid cooling.

Master of Music / Department of Music / Frank C. Tracz / This document is constructed on the comprehensive examination question based on the Graduate Conducting Recital of Gavin W. Smith. The theoretical and historical analysis includes Spring Wind – Weather Movement I and Storm Warning and Dance – Weather Movement II by Steve Riley, Prelude Op. 34, No. 14 by Dmitri Shostakovich, and Tempered Steel by Charles R. Young. Along with the analysis, this document contains the rehearsal plans and procedures for the preparation of the literature. The recital was performed by Kansas State University’s Symphony Band on March 13, 2007 in McCain Auditorium at 7:30pm.

Le comportement mécanique du verre silico-sodo-calcique soumis à un contact ponctuel peut être amélioré par trempe. Les effets de trempe se manifestent par des gradients de propriétés sur le comportement du verre rendant la modélisation plus complexe. Ce travail a porté sur la modélisation et la simulation des verres non trempés et trempés soumis aux essais de nano-indentation et de nano-rayage. Les outils de simulation par éléments finis ont été développé et validés sur le verre métallique, choisi en raison de son comportement plastique connu. En comparant avec les données expérimentales, nous avons observé que les paramètres du matériau et les conditions expérimentales pouvaient donner la même réponse sur la courbe force-déplacement et l'empreinte. L’identification des propriétés du matériau doit être basée sur des comparaisons avec des simulations considérant la géométrie réelle de l'indenteur, la souplesse de la machine et le tilt de surface de l'échantillon. Les stratégies développées permettent de faire des identifications sur le comportement du verre silico-sodo-calcique. Dans la famille du verre silicaté, le verre silico-sodo-calcique a un comportement plastique semblable au verre de silice qui est affecté non seulement par le mécanisme de cisaillement mais aussi par la densification. Il est essentiel donc d'étudier le comportement densification/cisaillement du verre de silice car il est largement discuté dans la littérature. La comparaison des résultats de simulation par plusieurs modèles avec les courbes force-déplacement et les images d'empreinte a montré que la modélisation de la densification, en prenant en compte l'écrouissage et la modification des modules élastiques, est suffisante pour décrire le comportement des verres silicatés. Enfin, les connaissances sur les simulations des essais à chargement ponctuel et la modélisation du comportement du verre ont guidé une étude sur les effets du gradient de propriétés dans les verres trempées thermiquement et chimiquement. / The mechanical behavior of soda-lime-silica glass subjected to contact damage can be improved by tempering. The effects of tempering created tailor properties and the glass behavior more complicated. Therefore, this work studied the modeling and simulation of non-tempered and tempered glasses subjected to the nano-indentation and nano-scratch tests. The finite element simulation tools have been primarily validated and the metallic glass was chosen for the studies because of its known plastic behavior. By comparing with the experimental data, we have observed that the parameters of material model and the experimental conditions could give the same response on load displacement curve and imprint. The evaluation of material properties must be based on the comparisons with fully modeled simulation considering the real geometry of the indenter, the compliance of the instrument and the tilting of the sample surface. The developed strategies allow identification of soda-lime-silica glass behavior. Similar to that of silica glass, the plastic behavior of soda-lime-silica glass is not only affected by the shear mechanism but also the densification. Hence, it is essential to study the shear/densification behavior of silica glass as it is widely discussed in the literature. The comparison of simulation results by several models with the load displacement data and the images of imprint showed that the modeling of densification by taking into account the hardening and the change in elastic moduli is sufficient for describing the behavior of silicate glasses. Finally, the knowledge about the simulation of the contact loading tests and the modeling of glass behavior guided a study on the coupling of tailored properties effects in the thermally and chemically tempered glasses.

La presente tesis de investigación está orientada en la aplicación de herramientas Lean manufacturing para mejorar los procesos productivos de una empresa que fabrica y comercializa vidrios de seguridad para el rubro de la construcción. Actualmente, la empresa Cánovas S.A.C, require reducir el porcentaje mensual de productos defectuosos que se obtienen del procesamiento en la linea de producción de vidrio templado. El objetivo de la empresa, es disminuir el porcentaje mensual de productos defectuosos a un nivel igual ó menor al 4%, el cual se ha determinado a traves de un desarrollo estadístico, acompañado de artículos de investigación que respaldan dicho nivel porcentual. En el primer capítulo se describió el analisis del sector donde se desarrolla la empresa, es decir, la industria del vidrio, algunos conceptos generales, metodologías, casos de exito aplicando las herramientas de ingenieria, asi como tambien el marco normativo que involucra las operaciones de la empresa. Para el desarrollo del segundo capitulo, se destacan las principales caracteristicas de la organización, la identificación del problema y sus evidencias, analisis de los motivos y las causas que generaron la mayor cantidad de productos defectuosos en la linea de producción de vidrio templado, En el tercer capitulo se procede a evaluar y desarrollar el diseño integral propuesto para la solución. En el cuarto capitulo, este diseño propuesto, se validó en un modelo de simulación mediante el software Arena, el cual nos mostró los analisis de los resultados obtenidos en cada etapa del proceso productivo, del mismo modo, se presento el analisis financiero con los resultados económicos obtenidos para la implementación. Finalmente se muestran las recomendaciones y conclusiones obtenidas del analisis del proyecto de investigación. / This research thesis is focused on the application of Lean manufacturing tools to improve the production processes of a company that manufactures and markets safety glass for the construction industry. Currently, the company Cánovas SAC, requires to reduce the monthly percentage of defective products that are obtained from the processing in the tempered glass production line. The objective of the company is to reduce the monthly percentage of defective products to a level equal to or less than 4%, which has been determined through statistical development, accompanied by research articles that support said percentage level. In the first chapter, the analysis of the sector where the company is developed was described, that is, the glass industry, some general concepts, methodologies, success stories applying engineering tools, as well as the regulatory framework that involves the operations of the company. For the development of the second chapter, the main characteristics of the organization are highlighted, the identification of the problem and its evidences, analysis of the reasons and causes that generated the largest number of defective products in the tempered glass production line. third chapter proceeds to evaluate and develop the integral design proposed for the solution. In the fourth chapter, this proposed design was validated in a simulation model using the Arena software, which showed us the analysis of the results obtained in each stage of the production process, in the same way, the financial analysis was presented with the economic results obtained for the implementation. Finally, the recommendations and conclusions obtained from the analysis of the research project are shown. / Trabajo de Suficiencia Profesional

The Well Trained Algorithm is a composition that challenges prevailing conceptions of the use of AI tools in music through the reconceptualising of JukeBox, a generative AI model for music, as an instrument in its own right. Here, I am coining the term ‘instrumentisation’ to describe a methodology for applying the qualities and associations of a musical instrument to a traditionally non-musical object. To showcase this conceptual approach, this model of thinking is applied to aid in the composition of the AI-generated musical piece, The Well Trained Algorithm. Through this process of ‘instrumentisation’, musical terms such as tuning and timbre are redefined to better relate to the specific affordances of an artificially intelligent system. The composition is informed, then, by an exploration of a system's instrumental possibilities, leading to a more effective and artistic use of the technology in the creative process. The seminal works of J. S. Bach and La Monte Young, The Well Tempered Clavier and The Well Tuned Piano, respectively, provide a historical, musical, and theoretical context for the piece as well as the datasets used to fine-tune the JukeBox model. With this thesis, I ask if, through a process of ‘instrumentisation’ AI technology can be successfully reconceptualised as a musical instrument as a means to promote artistic expression.

This thesis focuses on the parameter stability of additive normal tempered stable processes when calibrating a volatility surface. The studied processes arise as a generalization of Lévy normal tempered stable processes, and their main characteristic are their time-dependent parameters. The theoretical background of the subject is presented, where its construction is discussed taking as a starting point the definition of Lévy processes. The implementation of an option valuation model using Fourier techniques and the calibration process of the model are described. The thesis analyzes the parameter stability of the model when it calibrates the volatility surface of a market index (EURO STOXX 50) during three time spans. The time spans consist of the periods from Dec 2016 to Dec 2017 (after the Brexit and the US presidential elections), from Nov 2019 to Nov 2020 (during the pandemic caused by COVID-19) and a more recent time period, April 2023. The findings contribute to the understanding of the model itself and the behavior of the parameters under particular economic conditions.

The problem with, which this thesis is concerned is that of analyzing and comparing the fugal writing and contrapuntal style of J. S. Bach in the fugue expositions of The Well-Tempered Clavier and that of Paul Hindemith in the fugue expositions of the Ludus Tonalis. This comparison is made on the basis of a comprehensive analysis of the fugal expositions both collections of fugues mentioned ( The Well-Tempered by Bach and the Ludus Tonalis by Hindemith). Chapter I includes a discussion of the careers and compositional techniques of Bach and Hindemith. An emphasis is placed on a comparison of Bach's fugal writing with that of his immediate predecessors (composers of the seventeenth and early eighteenth centuries who were writing in the fugal style) and on a comparison Of Hindemith's theory of tonality, as expressed in The Craft of Musical Composition, with that of the traditional harmonic concept of Bach's day. Chapter II deals with the evolution of the fugal concept. In this chapter, imitative forms of composition which gradually evolved toward the fugue are traced from their very early beginnings through the sixteenth, seventeenth, eighteenth, nineteenth, and twentieth centuries. Emphasis is placed on the fugal form that Bach used and on Hindemith's neo-Baroque approach to fugal writing in the twentieth century. In Chapters III and IV, analyses are made of the expositions in the forty-eight fugues of Bach's Well-Tempered Clavier and Hindemith's Ludus Tonalis .There is a discussion of the number of voices, order of entries", order of statements of the theme, key relationships, and redundant entries. Also discussed In these chapters are the beginning and ending notes of the Subject, a change in tonality of the subject range and length of the subjects. There is, further, a discussion of the real and tonal answers and the reasons for the use of a tonal answer, recurring countersubject, invertible counterpoint, interludes, length of the exposition, and the cadences at the end of the fugue expositions. in Chapter V the fugal writing of Bach, as demonstrated in the fugue expositions of The Well-Tempered Clavier, and that of Hindemith, as demonstrated in the fugue expositions of the Ludus Tonalis, are compared. This comparison of these two styles of fugal writing shows the two composers' techniques and procedures to be very much alike except in Hindemith's expanded concept of tonality. Although Bach's set of fugues has set a standard for this type of writing, Hindemith has shown that this old form is still capable of being used with originality when adapted to twentieth-century practices.

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