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Barkl, Michael Laurence Gordon, and mikewood@deakin edu au. "Vertigo: Riccardo Formosa's composition technique." Deakin University, 1994. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051208.101826.
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Riccardo Formosa has been identified as being an important and widely recognised young Australian composer. Formosa's possession of a sophisticated composition technique is central to his approach to composition and to his reputation among contemporary composers.
Vertigo: Riccardo Formosa's Composition Technique aims to define the composition technique employed by Formosa. It does so by analysing the works from a number of clearly defined perspectives.
The study proceeds firstly through a description of the works as a whole and their relationship to the composers personal history. Secondly, the note-to-note operations Formosa has employed are reassembled through a detailed examination of the scores. Thirdly, an assessment is made of the function of the various techniques within the musical texture. Lastly, a number of comparisons are made between Formosas work and the work of his compositional models.
The study concludes that Formosas works show evidence of a composition technique operating effectively on different levels. The note-to-note processes, simple in themselves, are multiplied to form a complex counterpoint. On both the note-to-note level and the relationship between larger sections of the works, the controlling factor was found to be one of binary expression in the form of symmetry or complementarity, a compositional aesthetic also held by Formosa's teacher. Franco Donatoni.
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Neergaard, Balder Blankholm. "Schumann as aspiring pianist : technique, sonority, and composition." Thesis, Royal College of Music, 2018. http://researchonline.rcm.ac.uk/389/.
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In recent decades, the pianism of Robert Schumann's compositions has increasingly gained recognition. What was previously seen as dense and mid-keyboard centric is now recognised as ground-breaking in terms of sonorous invention, informed by an intimate understanding of the instrument and its playing techniques. Yet, as pianist Schumann has received little credit, primarily due to a short-lived and relatively unsuccessful career. This thesis aims to explore this seeming paradox. I shall argue that Schumann developed rarely discussed concepts of imagined sound and tactile feedback during his days as aspiring pianist (1828-1831), and that these became integral to the pianistic style of his earliest published compositions. Following a general overview of the historical and biographical contexts for this study, I will trace Schumann's piano practice to establish his overall artistic aims and the primacy of sonority in this regard. This leads to an investigation of his ideals of tone to locate Schumann within prevailing schools of piano playing and of piano making around 1830. Acknowledging his comprehension of playing mechanics, I observe that during an 1831 crisis which preceded his much-debated hand injury, his technique suffered from a series of insurmountable issues relating to the right hand. Disabled as performer, Schumann realised his virtuoso aspirations in his capacity as composer. Two case studies featuring the Abegg Variations op. 1 and Papillons op. 2 demonstrate his use of sound-audible and imagined-to elevate the mechanical virtuosity of piano playing into a virtuosity of the imagination. Not only does this demonstrate a transfer of sound concepts from performance to composition; it offers a timely reassessment of Schumann's pianistic merits and presents new interpretational paths for future performances of his piano music.
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Lee, Joungmin. "A New Music Composition Technique using Natural Science Data." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1557005560251117.
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Ryder, Justin. "Three-dimensional Body Scanning| A Novel Technique for Body Composition Assessment." Thesis, University of Missouri - Columbia, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13850748.
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INTRODUCTION: Accurate body composition assessment is crucial for determining health consequences due to excess body fat (BF). While several techniques exist there are few that are accurate, non-invasive, fast, and comfortable for subjects. The Three Dimensional (3D) body scanner is a new body composition assessment method that might serve as another option for investigators and practitioners. The purpose of this study was to determine the accuracy of the 3D body scanner at measuring body composition using dual energy x-ray absorptiometry (DXA) and Air displacement plethysmography (Bod Pod) as criterion measures. The 3D body scanner was evaluated on its ability to work with differences in normal versus overweight subjects as determined by BMI. Also, a new prediction equation was created and compared to that of an existing equation used by the 3D body scanner developed by the Department of Defense (DoD).
METHODS: Eighty-Five male subjects (21.70 ± 2.28 yr old; 81.00 ± 12.21 kg; 25.37 ± 3.40 kg/m2) completed all body composition assessment techniques on the same day. Tests preformed included: DXA, Bod Pod, and 3D body scanning. Subjects did not eat or drink 2 hr previous to testing and did not exercise 4 hr previous to testing. Data was analyzed using SPSS version 17.0. Bland-Altmand plots, Pearson correlations, and a oneway ANOVA comparing means were performed. A prediction equation (3D MU) was created using a stepwise regression based on correlation to DXA.
RESULTS: Mean comparison of body composition techniques were as follows: DXA BF 16.30 ± 4.67; Bod Pod 12.17± 7.19; DoD 13.53 ± 6.43; 3D MU 16.49 ± 4.16. 3D MU had a SEE=3.09 over the entire sample compared to DoD SEE=3.67 and Bod Pod SEE=2.45. Although body volumes of Bod Pod and 3D Scanner were highly correlated (r = 0.984; p =0.001), the 3D Scanner underestimated body volume. Improvement in making consistent estimations of head, hand, and feet are necessary for the 3D body scanner to be used for body composition assessment.
CONCLUSION: Although the 3D body scanner shows promise as a method of evaluating BF, more work is needed before it can be considered an acceptable laboratory method of assessment. A 3D MU prediction equation was created that appears to be more accurate for young men than the current DoD equation. 3D body scanning shows potential as a method for determining body composition in overweight subjects.
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Morgan, Helen M. "A gamma-ray backscattering technique for in vivo body composition studies." Thesis, University of Bath, 2001. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340992.
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Pulugurtha, Satya Venkata Sidhi Vinayak, and Kishore Kumar Atragadda. "A Multi-layered Routing Technique for Sensing Train Integrity and Composition." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-19489.
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This thesis deals with an approach to monitor the integrity and composition of cargo wagons withthe help of Wireless Sensor Network (WSN). The WSN is to be fully automated that does notneed any human intervention for gathering information about the composition and integrity ofcargo trains, which are the most necessary factors for Cargo Logistics. The nodes are deployed inevery wagon along with the master node in the main locomotive. The master node in thelocomotive gets the information from the slave nodes placed in the cargo wagons in successivesessions. If there are any unexpected changes in the composition of the wagon, theacknowledgments to the locomotive will be terminated. This approach mainly focuses ondesigning energy-efficient as well as cost-efficient WSN. The designed WSN can accommodateto changes, which are caused by external conditions. The designed approach is also scalable. TheWSN is designed with the usage of Zigbee mesh protocol with Arduino Microcontroller as thebrain of the system that is validated and verified in the indoor, imitating the railway environment.
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McConnell, Kathleen Fiona. "Inventing pluralistic education compulsory schooling as technique of democratic deliberation /." [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3331357.
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Thesis (Ph.D.)--Indiana University, Dept. of Communication and Culture, 2008.Title from PDF t.p. (viewed on Jul 24, 2009). Source: Dissertation Abstracts International, Volume: 69-11, Section: A, page: 4320. Adviser: Robert E. Terrill.
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Worcester, Benjamin. "Stravinsky’s cut-and-paste compositional technique with commentary on whither no one knows, an original work." Kansas State University, 2010. http://hdl.handle.net/2097/4616.
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Master of MusicDepartment of Music
Craig A. Weston
Igor Stravinsky used a compositional technique that researchers have termed cut-and-paste. During the compositional process, Stravinsky would write notes on carbon paper, then cut the lower parts out to paste them into other sheets of paper with music on them. This paper examines a few key ways this fits into the compositional process for Symphonies of Wind Instruments (1920, rev. 1947). In an original work, Whither No One Knows (a chamber work for flute, clarinet, marimba, piano, violin, viola, and cello) several similar cut-and-paste compositional processes were used. These include melodic cut-and-paste, ostinato creation, layering, rhythmic diminution, and extension. These techniques are illustrated and examined. The full score of Whither No One Knows (2009) is included.
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Lee, Chi Shing. "A comparison of body density determinations using residual volume and total lung capacity in underwater weighing technique." HKBU Institutional Repository, 1998. http://repository.hkbu.edu.hk/etd_ra/147.
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MacDonald, James Donald III. "Study in Rain and Light: An approach for audiovisual composition." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1554491734331463.
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Czuba, Eva. "Development of a technique to study stable carbon isotope composition of NMHCs in ambient air." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0020/MQ56169.pdf.
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Ouyang, Jing. "The influence of the English pianoforte on keyboard technique and composition from 1790 to 1826." Thesis, Manchester Metropolitan University, 2017. http://e-space.mmu.ac.uk/620029/.
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The purpose of this research is to define the significant elements of influence of the English piano regarding the style of piano playing and composing from 1790 to 1826. This study will focus on repertoire written by the group of composers labelled by Nicholas Temperley as the London Pianoforte School, which included Clementi, Cramer and Dussek. There is currently no systematic study or published scholarly discussion on this topic, which takes account of the full diversity of both the repertoire itself and the pianistic techniques and documented performance style of the London Pianoforte School. This study is to investigate the possible ways of performing the music on the pianofortes in the eighteenth and nineteenth centuries, in order to help performers in the present day to produce variety of tone production and a historically informed performance on a modern piano. In the late eighteenth and early nineteenth centuries, the compositional and performance style in London changed in accordance with the rapid development of English pianos. An examination of the music written by composers of the London Pianoforte School shows that producing a singing tone; the favour of mixing harmonies; the variety of touches and extensive utilisation of embellishments in fast movements were significant characteristic elements of performance in London at the time. These features encouraged a new way of notating the scores in composition and of producing sound in performance. This study is led by my own practice as a performer in a series of representative works, interpreted critically on modern and historical instruments with a written commentary. The methodology I have used includes study of treatises on performance practice in the eighteenth and nineteenth centuries; reception history through contemporary reviews; autograph and original editions of musical scores and my own video demonstrations accompanied by annotated scores.
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Kim, Chol-Ho. "Five Seasons: A composition for flutist and percussionist." Thesis, view full-text document. Access restricted to the University of North Texas campus, 2001. http://www.library.unt.edu/theses/open/20012/kim%5Fchol-ho/index.htm.
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Thesis (M.M.)--University of North Texas, 2001.For flutist (flute, alto flute, piccolo and bass flute) and percussionist performing vibraphone, xylophone, woodblock, glockenspiel and marimba. Includes analysis by composer (p. i-xxxiii). Score includes performance notes. Includes bibliographical references (p. xxxiii).
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Gonzalez, Beatriz Andrea. "Determining the effects of alloy composition, forging technique, and flux on the strength of forge welds." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119956.
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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.Cataloged from PDF version of thesis.
Includes bibliographical references (page 41).
Welding is an essential manufacturing process in industries that require the joining of metal components such as the automotive and aerospace industries. While specialized techniques have developed for many of these industries, the process of welding remains fundamentality the same, and the effectiveness of these processes to securely join metal is always characterized by the material properties of the metal after welding. The tensile test performance of forge welds when made with different iron alloys, forge welding techniques, and fluxes was measured. The alloys used were 1018 steel, A36 steel and wrought iron. The forge welding techniques were the hydraulic press, the power hammer, and hand hammer. The fluxes were borax, fine silica sand, anti-borax, and no flux. Control tensile samples (un-welded) of each alloy, as received, were tested along with annealed samples. All testing was performed with an Instron 5984 Universal Testing Machine with 150kN capacity. The results of the welded alloy tests showed that welded 1018 and A36 steel both had considerably lower strength than their control annealed counterparts, whereas welded wrought iron remained just as strong. The results of the forge welding techniques test showed consistent welded A36 steel strengths across techniques used which may suggest that the effectiveness of particular techniques may be more dependent on experience and practice. The flux results show that silica sand and anti-borax work just as well as, if not better than, borax. Using no flux resulted in failed welding, revealing that achieving successful welds without flux requires more welding experience or a different method than the one performed by the welder of the samples for the present experiment. The results of the control alloys showed that 1018 and A36 steel both had considerably lower strength than their annealed counterparts, whereas wrought iron remained just as strong.
by Beatriz Andrea Gonzalez.
S.B.
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Brostrand, Cathy Cummings, and Kathleen Louise Knight. "Does collaboration as a prewriting technique improve student writing?" CSUSB ScholarWorks, 1997. https://scholarworks.lib.csusb.edu/etd-project/1462.
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Martin, Riana Theresa. "Evaluation of capillary electrophoresis as an analytical technique using bulk ionic composition of fluid inclusions in quartz." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51751.
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Thesis (MSc)--Stellenbosch University, 2000.ENGLISH ABSTRACT: This study was initialized to introduce capillary electrophoresis (CE) as a useful technique in the analysis of fluid inclusions in quartz. lts advantages are low detection limits for the dissolved ionic content of the fluid, the small amount of sample (1 g or less) for a detailed qualitative and quantitative analysis, and the short time required to obtain results (one run for either cations or anions take approximately 10 minutes). The study area from which quartz veins were selected is situated within the Neoproterozoic Saldania belt. Syn- and post-tectonic S-, 1- and A-type granitoids from the Cape Granite Suite intruded the metamorphosed Malmesbury greywacke and pelites between 550 and 510 Ma. Additional periods of tectonism and metamorphism occurred during Cape Supergroup sedimentation (480 - 400 Ma) as well as Karoo sedimentation and the simultaneous Cape Orogeny (280 -215 Ma). The quartz-biotite±chlorite vems are hosted by Cape Granite as well as Malmesbury sediments. These barren quartz veins are part of two vein sets, one dipping at an angle between 15 and 500 to the S to SE and striking W, similar to Sn-mineralized quartz veins in the SW-cape, while the other is near-vertical and striking W to NW. Except for their orientation, no differences regarding associated minerals, inclusion characteristics or fluid chemistry indicated a difference in origin. Four fluid phases within a temperature range of 160 - 390 °C were identified as being largely late-magmatic and released from the underlying Cape Granite plutons, namely an early 370- 390 °C population, followed by the 310 - 360, 230 - 300 and lastly the 160 - 200 °C populations. Initiation of this fluid system occurred from at least SlOMa, after final granite intrusion, but the age of the final stage is unknown. Renewed fluid circulation occurred during a later period of metamorphism, possibly during the Cape Orogeny. These fluids had temperatures between 240 and 360°C and are of sedimentary origin, most likely released from the Malmesbury metamorphites. The technique of capillary electrophoresis has been evaluated for its application to bulk fluid inclusion analysis, and the crush-leach fluid extraction procedure of Bottrell, et al., (1988) optimized for CE analysis. Contamination factors were identified and minimized or eliminated, where possible. Bulk fluid inclusion chemistry obtained by CE was therefore proved to provide valuable information regarding the various fluid generations as long as inclusion populations are investigated individually to explain and correlate bulk data.
AFRIKAANSE OPSOMMING: Die doel van die studie was om te toon dat die tegniek van kapillêre elektroforese bruikbaar is in die analiese van vloeistofmsluitsels in kwarts. Die voordele van hierdie tegniek is lae deteksie limiete vir die opgeloste ioon inhoud van die vloeistof, die klein monstergrootte (< 1g) wat nodig is vir 'n omvattende kwalitatiewe en kwantitatiewe analise, en die kort tydsduur waarin resultate verkry word ('n katioon of anioon analise vir een monster duur lO minute). Die studie gebied waar kwarts are gemonster is, is binne die Neoproterosoïese Saldania Gordel geleë. Sin- en laat-tektoniese S-, I- en A-tipe graniete van die Kaapse Graniet Suite het die gemetamorfiseerde Malmesbury grouwakke en peliete tussen 550 en 510 Ma binnegedring. Latere periodes van tektonisme en metamorfose het tydens deponering van die Kaap Supergroep (480 - 400 Ma), en die gelyktydige episodes van Karoo sedimentasie en Kaapse Orogenese (280 - 215 Ma) plaasgevind. Die gasheer gesteentes vir die kwarts-biotiet±chloriet are is Kaapse Graniet sowel as Malmesbury sedimente. Hierdie ongemineraliseerde are is deel van twee aarstelsels, nl. een met 'n duik hoek tussen 15 en 50° S tot SO en 'n westelike strekking, soortgelyk aan die Sn- ,.gemineraliseerde are in die SW-Kaap, terwyl die ander stel are feitlik vertikaal is en W tot NW strek. Behalwe vir die verskil in oriëntasie was daar geen aanduiding, wat betref 'n verskil in geassosieerde minerale, vloeistofinsluitsel kenmerke of vloeistof chemie, dat hierdie twee aarstelsels van verskillende oorsprong is nie. Vier vloeistof fases binne 'n temperatuur gebied van 160 - 390 °C en 'n vloeistof saliniteit van 0 - 5.7 gewig % NaC1 ekw. is geïdentifiseer, met 'n laat-magmatiese assosiasie en vrygestel deur die onderliggende Kaapse Graniete. Dit behels 'n vroeë 370 - 390 °C populasie, gevolg deur die 310 - 360, 230 - 300 en laastens die 160 - 200 °C populasies. Inisiasie van hierdie sisteem kon moontlik rondom 510 Ma gelede plaasgevind het, maar die ouderdom van die finale fase is onbekend. Hernude vloeistof sirkulasie het tydens 'n later stadium van metamorfose onstaan, moontlik tydens die Kaapse Orogenese. Hierdie vloeistowwe het temperature tussen 240 en 360 °C en is van sedimentêre oorsprong waar dit moontlik deur metamorfose van die reeds gemetamorfiseerde Malmesbury gesteentes vrygestel is. Die tegniek van kapillêre elektroforese is vir die toepassing daarvan in die analise van vloeistof insluitsels in kwarts geëvalueer, terwyl die vloeistof vrystellingsmetode van Bottrell en Yardley (1988) vir hierdie tegniek geoptimaliseer is. Kontaminasie faktore is geïdentifiseer en verminder of uitgeskakel waar moontlik. Daar is getoon dat die vloeistof chemie, wat verteenwoordigend is van al die insluitsel populasies in 'n monster, wel bruikbaar is t.o.v. afsonderlike vloeistof generasies, solank elke populasie individueel bestudeer is om die omvattende chemiese data te verduidelik en met 'n enkele populasie te korrelleer.
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Gkouskou-Giannakou, Pergia. "Composition médiatique des objets site web : le cas des sites web de la culture scientifique et technique." Compiègne, 2007. http://www.theses.fr/2007COMP1709.
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Notre travail vise à étudier cet objet substantiel de l'univers du Web : le site web. Notre approche consiste en une analyse des contenus des sites web du point de vue de leur forme matérielle et des médiations complexes qui émergent entre les usagers, le support et les diffuseurs des contenus. Le contenu de la thèse s'articule autour des axes suivants : une interrogation sur la nature de l'objet "site-web" dans sa relation avec les partenaires de la communication ; une observation et analyse des transformations dans les conditions de la production du sens induites par le web ; une observation de l'expression et la transformation des positions institutionnelles et des médiations par rapport à la production web. Nous examinons ici les mécanismes de métaphore qui émergent entre les stratégies des concepteurs, les pratiques des usagers et les propriétés du supportOur work aims at studying websites as the substantial objects of the Web universe. Our approach yields from an analysis of websites contents, from the point of view of their material form and of the complex mediations that emerge among users, the medium and content publishers. The thesis is articulated along the following axes : questioning the nature of the « website object » in its relation to the communication partners ; observation and analysis of the transformations induced by the Web to the conditions of sense production ; observation of the way the transformations of institutional positions and of mediations with respect to the Web productions are expressed. In particular, we investigate the metaphor-based mechanisms that arise involving website designers' strategies, users' practices and medium proprieties
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Depierre, Amélie. "La Composition en anglais scientifique : application au domaine de la physico-chimie." Littoral, 2001. http://www.theses.fr/2001DUNK0070.
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Issue d'expériences et d'interrogations pédagogiques, cette recherche a pour double objectif d'une part de faire la synthèse des travaux existants en matière de composés et autres groupes nominaux complexes en anglais, et d'autre part d'appliquer les acquis théoriques afin de venir en aide aux étudiants et chercheurs francophones qui ont besoin de communiquer (comprendre et s'exprimer) en anglais. Après un tour d'horizon des critères de définition et de distinction des composés, puis des investigations en corpus, une nouvelle classification morphologique des composés binaires a été effectuée, suivie de l'examen des relations sémantiques entre les éléments, et d'une extension aux composés à plus de deux lexèmes. Une attention particulière a été accordée aux composés néo-classiques et aux sigles, spécialement abondants dans le domaine scientifique, ainsi qu'au contraste entre trois structures concurrentes : N₂ N₁, N₂'s N₁ et N₁ of N₂, qui constituent une source non-négligeable d'erreurs d'encodage chez les francophones. Finalement, un glossaire électronique des termes du domaine assortis d'exemples de phrases attestées, est proposé au format Excel, un des objectifs post-thèse étant d'étendre ce glossaire et de le mettre au format HTML, afin de le rendre plus accessible, car c'est un outil flexible et exportable à d'autres domainesThis study stems from teaching experience and comes as a response to students' questions and errors. It has two main objectives : on the one hand a critical review of existing research on compounds and other complex nominals in English, and on the other hand the application of the theoretical data available in order to help French-speaking students and researchers, who need to communicate (understand, speak and write) in English, namely in the domain of physico-chemical sciences. After a survey of the characteristics of compounds, and an investigation of axamples taken from several corpora, a new morphological classification of binominal compounds is suggested, then the semantic relations between their elements are pointed out. The results are extended to longer nominals, with a particular attention paid to words built from Greek and Latin bases, and acronyms, which abound in the field of sciences. These competing structures : N₂ N₁, N₂'s N₁ and N₁ of N₂ are contrasted, as they are a major source of error among French speakers, especially at the encoding stage. Lastly, an electronic glossary in Excel format including some of the terms of the domain, together with examples of attested sentences, has been developed. One of the future objectives is to transfer the glossary in HTML format in order to make it more available for use in various domains
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Marshall, Alan. "Ruptures et continuités dans un changement de système technique : le remplacement du plomb par la lumière dans la composition photographique." Grenoble 2, 1991. http://www.theses.fr/1991GRE29042.
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La relative continuite des activites industrielles est parfois eclipses par les bouleversements qui caracterisent les periodes d'innovation technique majeure. La presente etude examine le remplacement du plomb par la lumiere dans la composition typographique a travers le cas de la lumitype-photon, la premiere photocomposeuse de deuxieme generation a connaitre le succes commercial. Une premiere section est consacre a la description systematique des activites typographiques et des techniques traditionnelles de composition. L'invention, la mise au point et la commercialisation de la lumitype-photon sont ensuite examinee dans leur context global, c'est-a-dire en tenant compte des facteurs techniques, organisationnels et culturels. L'etude montre que l'innovation technique dans le domaine de la production typographique est etroitement liee a des facteurs organisationnels et aux pratiques culturuelles. Les savoir-faire et les formes d'organisation de la production qui conditionnent la generalisation des nouvelles techniques dans le domaine typographique dependant a leur tour de la nature de la matiere premiere (le texte) et des produits typographiques. A partir de son analyse de cette periode cle de l'histoire des techniques graphiques, l'auteur propose un modele d'innovation techniques applicable a d'autres secteurs de la production culturelleThe radical changes wich often accompany major technical innovations tend to overshadow the long-term factors which give continuity to industrial activities. The present study looks at the replacement of hot metal photographic techniques in type composition through the case of the lumitype-photon, the first commercially successful second generation phototypesetting machine. An introductory section provides a systematic description of typographic production activities as well as of traditional composing techniques. The invention, development and industrial exploitation of the lumitype-photon are then described and analysed in a global (i. E. Technical, organisational and cultural) context. Technical innovation in the field of typographical production is seen to be strongly influenced by organisational) factors as well as cultural practices. The skills and production organisation which condition the development and industrial implantation of new techniques are themselves dependant on the nature of the raw material of typography (the text) and of its products. In analysing a key period in the history of printing techniques, the author provides a model of technical innovation applicable to other areas of cultural production
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Nowak, Sophie. "Effet de la composition et de la technique d'élaboration sur le comportement mécanique des verres metalliques base zirconium." Phd thesis, Université Paris-Est, 2009. http://tel.archives-ouvertes.fr/tel-00505264.
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Les verres métalliques sont des matériaux récents (≈ 50 ans), obtenus par refroidissement rapide d'un alliage en fusion. La structure amorphe de ces matériaux leur confère des propriétés particulières : une très grande résistance mécanique (limite à la rupture de l'ordre de 1,7 GPa pour des alliages base Zr), une déformation élastique de l'ordre de 2% mais pas ou peu de ductilité. Les compositions pouvant être élaborées à l'état amorphe, et, sous forme massive, sont en nombre limité. Le travail présenté dans ce manuscrit démontre la possibilité de consolider par frittage SPS (Spark Plasma Sintering), des poudres amorphes obtenues par atomisation (Фmoy.≈70 μm), tout en conservant majoritairement le caractère amorphe. L'optimisation de ce protocole, avec la composition Zr57Cu20Al10Ni8Ti5, a permis de retrouver le même comportement mécanique qu'un verre massif monolithe. Une cristallisation partielle du matériau se produit cependant aux points de contact des particules, mais pourrait être réduite en poursuivant le modèle de frittage esquissé dans ce manuscrit. Aux vues de ces résultats, la conception de nouvelles compositions, et leur élaboration sous forme de rubans, ont été menées. La caractérisation par nano-indentation permet d'estimer de manière fiable les propriétés mécaniques de ces alliages. Enfin, une nouvelle méthode d'évaluation du volume d'activation, qui est le volume élémentaire cisaillé initiant la déformation plastique, est présentée. Il s'agit de l'analyse statistique d'essais de pseudo-fluage en nano-indentation, réalisés à température ambiante. En conclusion, ce travail propose de nouvelles perspectives d'élaboration de verre métalliques sous forme massive dans une gamme de composition bien plus large
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Marchal, Éric. "Immunonéphélémétrie microparticulaire : système protéolytique du plasminogène dans le sang humain et le lait bovin." Nancy 1, 1994. http://docnum.univ-lorraine.fr/public/SCD_T_1994_0125_MARCHAL.pdf.
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Le but de ce travail est de développer une méthode de dosage du plasminogène qui puisse s'appliquer dans divers milieux biologiques. L'immunonéphélémétrie microparticulaire permet de doser l'enzyme dans le sang humain et le lait bovin, deux milieux ou les conséquences de la protéolyse qu'elle implique sont très différents. Le système utilisé pour la mise au point du dosage du plasminogène humain présente une sensibilité de 50 ng/ml. Sa validation fait apparaitre la fidélité et l'exactitude de la méthode. En nous basant sur la forte homologie de séquence entre les plasminogènes humain et bovin, ce dosage est adapté en plusieurs étapes pour évaluer le plasminogène bovin en milieu lait. Le système final présente une sensibilité de 5 ng/ml et permet d'utiliser des échantillons dilués au 1/200. A cette dilution, les caséines du lait interviennent en influençant l'agglutination des réactifs micros particulaires. Il est donc nécessaire de prétraiter les laits. Ce dosage est appliqué à une étude du plasminogène et de son substrat principal, la caséine béta, sur des laits de troupeau. Les résultats montrent que les deux paramètres présentent des variations saisonnières et qu'ils évoluent indépendamment sur la période d'expérimentation de 4 mois. Les teneurs des laits en plasminogène s'échelonnent de 1,05 à 3,35 mg/l. L'élargissement de l'étude à 13 mois, associé à un système utilisant des anticorps monoclonaux différenciant le plasminogène de la plasmine, devrait permettre, dans des études à venir, d'affiner ces résultats.
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Myniotė, Gita. "Trimatė tekstilinė kompozicija „PAUKŠČIU PAKILSIU“." Bachelor's thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120702_113213-71788.
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Bakalauro darbe analizuojami paukščio įvaizdžio raiškos ypatumai senojoje ir šiuolaikinėje lietuvių tekstilėje, siekiant sukurti trimatę tekstilės kompoziciją PAUKŠČIU PAKILSIU. Pasirinkta kurti trimatė kompozicija, manau, labai tinkama gvildenti ir interpretuoti ugdymo procese, kadangi suteikia papildomų galimybių per etninės kultūros aspektus, viena vertus, geriau pažinti šiuolaikinį meną, o kita vertus prisidėti prie ekologinio mokinių ugdymo.The Bachelor's paper analyses the peculiarities of a bird's image expression in antique and modern Lithuanian textile with a view to create a three-dimensional textile composition I'LL FLUSH LIKE A BIRD. The chosen three-dimensional composition, in our opinion, is very suitable for ventilation and interpretation in the educational process, whereas, through the aspects of ethnic culture, it provides additional possibilities, on the one part, to understand better the contemporary art and, on the other part, to contribute to the environmentally friendly education of pupils.
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Marchesini, Maria. "Exploration of a novel technique to measure the mass composition of cosmic rays with energies above 10¹⹠eV." Thesis, University of Leeds, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400932.
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Dauphant, Clotilde. "La poétique des Œuvres complètes d'Eustache Deschamps (ms. BNF fr. 840) : composition et variations formelles." Paris 4, 2009. http://www.theses.fr/2009PA040148.
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Kim, Elisabeth Jina. "The Beauty of the World Has Two Edges." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/34812.
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A library for rare books and a reading garden, the following project emerged from an attempt to better understand the idea of an autonomous architecture. Framing architectural questions as a choice between opposing alternatives of perceived relevance (e.g., geometric construction versus geometric composition, self referential versus self governing, singular versus universal) the project, which at its beginning was a simple exercise in geometric constructive technique, evolved as it was viewed through the lenses of those dualities.Master of Architecture
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Sitnikoff, Françoise. "Culture de métier, changement technique et savoirs ouvriers : le cas de l'imprimerie." Nantes, 1995. http://www.theses.fr/1995NANT3014.
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La thèse étudie les métiers de la composition dans l'imprimerie de labeur. Elle porte particulièrement sur le changement technique et la culture de métier. Elle repose sur des enquêtes de terrain réalisées entre 1985 et 1993, dans trois imprimeries industrielles de province. L'auteur étudie les transformations induites par l'introduction de la photocomposition, tant du point de vue des postes de travail (contenu des tâches, savoirs requis, organisation du travail) que des représentations et valeurs propres à la culture de métier des compositeurs. L'accent est également mis sur le rôle des collectifs de travail, leur histoire et leur mode de socialisation spécifiques, dans le processus d'appropriation des nouvelles techniques et de recomposition du métier. La recherche intègre des travaux portant sur d'autres aspects de ce secteur d'activité : étude des relations entre constructeurs de matériel et imprimeurs, entre organisations syndicales et formation professionnelle. Cette approche situe l'analyse des changements observés dans les ateliers dans un mouvement plus vaste de transformation de leur environnement et de recomposition de la communauté professionnelle de l'imprimerie. L'élargissement de l'espace d'observation, ainsi que la multiplication des périodes d'enquête, autorisés par la durée de la recherche, montrent que le changement technique participe de la dynamique de la configuration sociale des métiers de l'imprimerieThe thesis studies the type-setter's craft in high-volume printing houses. More particularly, it deals with technological change and with professional culture. Its draws upon fieldwork carries out between 1985 and 1993, in three industrial printing-houses in the french provinces. The author examines the transformations brought about by the introduction of photo-composition, considering its impact as much on the work-posts (in terms of task content and flow,and what skills these necessitate), as on the representations and values of the type-setters culture. Also emphasized is the role of work-groups with their specific history and social structure-in acquiring new techniques and updating the trade. The research draws upon earlier work that has dealt with other aspects of this sector relations between printers and makers of equipment, with other aspects of this sector : relations between printed and makers of equipment, and between labor unions and professional training. Observable changes in the workshops are accounted for withen a larger framework of transformations in their environment and overhauls in the community of their profession. This broadening of the field of vision,together with the many returns to the field made possible by the length of the study, show that technological change participates in the dynamics of social construction in the printing trades
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Coker, Kevin Lee. "Time Suspended: The Crossroads of Ancient Orthodox Liturgical Music with English Experimental Technique in the Works of Composer, Conductor, and Priest Fr Ivan Moody." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1523634520869545.
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Nicolls, Sarah Louise. "Interacting with the piano : absorbing technology into piano technique and collaborative composition : the creation of 'performance environments', pieces and a piano." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/5511.
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This thesis explores the expansion of the piano performance environment, using technology to augment the sound, the playing area of the piano and its surroundings, and/or the performer's own body in controlling electronic elements of the music. In particular I examine the extension of piano technique and how this is affected by adding technology. I also discuss collaborative compositional processes in creating co-authored musical works and have given a critical appraisal of the different technological systems used in all of these pieces. I have also introduced ideas about developing the structure of the piano to better suit contemporary techniques and the addition of technological elements in piano playing. These ideas are represented by my own "Inside-out Piano", illustrated within the thesis. Throughout this work many new pieces for piano and live electronics have been generated and I hope these may also be useful as a resource for other pianists exploring their own interactions with the piano.
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FRACHE, PHILIPPE. "Contribution a l'etude de l'immunologie de trichinella spiralis : cinetiques des anticorps et de l'antigene circulant dans la trichinose chez l'homme et les rongeurs ; analyse de la composition de l'antigene excrete-secrete par les larves de stade iii." Strasbourg 1, 1989. http://www.theses.fr/1989STR15089.
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Casado, Mathieu. "Water stable isotopic composition on the East Antarctic Plateau : measurements at low temperature of the vapour composition, utilisation as an atmospheric tracer and implication for paleoclimate studies." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLV058/document.
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Les carottes de glace permettent de reconstruire le climat du passé, à partir entre autre de la composition isotopique de l’eau (δ18O, δ17O et δD). Sur le plateau Est Antarctique, les températures très froides et les faibles accumulations permettent de remonter le plus loin dans le passé (jusqu’à 800 000 ans) mais compliquent l’interprétation du signal isotopique. Premièrement, les reconstructions des variations de température dans les carottes de glace à partir des isotopes de l’eau se basent sur des modèles pour décrire l'évolution de la composition isotopique de la vapeur et de la phase condensée le long du cycle de l’eau. Ces modèles, qui ont été développés au cours des dernières décennies, reposent sur la connaissance de coefficients du fractionnement isotopique associé à chaque transition de phase et sur des hypothèses pour représenter la micro-physique des nuages.Lors de la formation de flocons de neige à basse température, 2 types de fractionnements isotopiques doivent être pris en compte : le fractionnement isotopique à l'équilibre, associé à la transition de phase vapeur-glace et le fractionnement isotopique cinétique lié aux différentes diffusivités des différents isotopes. A basse température, les déterminations des coefficients du fractionnement du fractionnement à l’équilibre présentent d’importantes différences et n’ont jamais pu être mesurées à des températures inférieures à -40°C. Or la température moyenne annuelle à Dome C est de -54°C atteignant jusqu’à -85°C l’hiver. Les diffusivités des différents isotopes quant à elles n’ont jamais été mesurées à des températures inférieures à 10°C. Toutes ces lacunes résultent dans des incertitudes importantes sur le lien entre la composition isotopique et la température dans des conditions comme celles du Plateau Est Antarctique.De plus, dans ces conditions froides et arides, les processus physiques qui affectent la composition isotopique de la neige après la déposition des flocons deviennent importants compte tenu du faible apport annuel de précipitation. Pour estimer l’impact de ces processus de post-déposition sur la composition isotopique, il est nécessaire de bien caractériser le fractionnement isotopique à l’interface neige/atmosphère pour des températures allant jusqu’à -90°C.Afin d’améliorer les reconstructions quantitatives de température l’étude des processus affectant la composition isotopique de la glace à très basse température est donc primordiale. Dans cette optique, ma thèse a été à l’interface entre les études de processus au laboratoire et en Antarctique et le développement instrumental afin de pouvoir réaliser des mesures isotopiques encore inédites, en particulier à très basse humidité. D’un côté, j'ai développé d’un nouveau spectromètre infrarouge aux performances bien au-delà des instruments commerciaux. En effet, la fréquence du laser est stabilisée par rétroaction optique par une cavité ultra-stable jusqu’à un niveau de stabilité de l’ordre du hertz. La lumière est ensuite injectée dans une cavité CRDS hautes performances avec une sensibilité de 10-13 cm-1.Hz-1/2. Ceci permet de mesurer la composition isotopique avec une précision inférieure au ppm.En parallèle, des expériences au laboratoire ont permis de renforcer les connaissances sur les processus affectant les isotopes de l’eau, en particulier le fractionnement lié à la transition de phase vapeur - glace et le fractionnement cinétique lié aux différentes diffusivités des différents isotopes en modélisant le fractionnement lié à la diffusion près d’un point froid. Enfin, durant une campagne en Antarctique, j’ai pu réaliser parmi les premières mesures de la composition isotopique de la vapeur et de la glace en Antarctique et appliquer les modèles physiques des processus à des données de terrain. Ces mesures montrent que le cycle de sublimation/condensation contribue de manière importante à la composition isotopique de la neige sur le plateau Est AntarctiqueIce cores enable reconstruction of past climates, from among others water stable isotopic composition (δ18O, δ17O et δD). On the East Antarctic Plateau, very cold temperature and low accumulation provide the longest ice core records (up to 800 000 years) but embrangle the interpretation of isotopic composition. First, reconstructions of temperature variations from ice core water isotopic composition are based on models used to describe the evolution of the isotopic composition of the vapour and of the condensed phase over the entire water cycle. These models have been developed during the last decades and depend upon precise determinations of isotopic fractionation coefficients associated to each phase transition and upon hypotheses to describe cloud microphysics.During the formation of snowflakes at low temperature, two types of isotopic fractionations need to be taken into account: equilibrium fractionation, associated to the vapour to ice phase transition and kinetic fractionation associated to the difference of diffusivity of the different isotopes. At low temperature, determinations of equilibrium fractionation coefficients present important discrepancies and have never been realised for temperature below -40°C. However, mean annual temperature at Dome C is around -54°C reaching -85°C in winter. For the diffusivities of the different isotopes, they have never been measured at temperature below 10°C. All these gaps result in important uncertainties on the link between isotopic composition and temperature, especially for cold and dry conditions such as encountered on the East Antarctic Plateau.Furthermore, because of the very low amount of precipitation, physical processes affecting the isotopic composition of the snow after the deposition of snowflakes can results in an important contribution to the isotopic budget. In order to estimate the impact of the post-deposition processes on the water vapour isotopic composition, it is necessary to characterise the isotopic fractionation at the snow/atmosphere interface for temperature down to -90°C.In order to improve isotopic paleothermometer performances, it is primordial to study processes affecting snow isotopic composition. Toward this goal, my Ph-D has been at the interface between monitoring of processes affecting isotopes, both in laboratory experiments and field studies, and instrumental development to push the limits of water vapour isotopic composition trace detection. On one hand, new developments in optical feedback frequency stabilisation applied for the first time to water isotopic composition monitoring provide performances beyond any commercial instrument and can be used for thorough processes studies. The laser frequency is stabilised by optical feedback from an ultra-stable cavity to the hertz level. Then, the light is injected in high performances cavity with a sensibility of 10-13 cm-1.Hz-1/2. This enables measuring isotopic composition with a precision below the ppm level.On the other hand, laboratory experiments have supported theories about isotopic fractionation associated to the vapour to ice phase transition and to kinetic fractionation linked to the difference of diffusivities of the different isotopes. Finally, these physical models have been collated to field measurements realised at Dome C in Antarctica, which are among the first water vapour and snow isotopic composition measurements realised inland Antarctica. These measurements show how important is the contribution of the sublimation condensation cycles to the snow isotopic composition budget on the East Antarctic Plateau
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Aubé, Anne-Marie. "Le cercle et ses dérives : de l'atelier à la composition picturale vers la galerie." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26996/26996.pdf.
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Chiappini, Laura. "Développement d'une technique d'analyse pour l'étude de la composition chimique et des voies de formation de l'aérosol organique secondaire en atmosphère simulée." Paris 7, 2006. http://www.theses.fr/2006PA077010.
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L'atmosphère est un milieu complexe où coexistent phase gazeuse, aqueuse et particulaire. Elle contient en effet des particules, liquides ou solides en suspension, appelées aérosol. Les processus de photo-oxydation de composés organiques volatils (COVs) peuvent mener à la formation d'aérosol organique secondaire (AOS). Le rôle joué par les AOS sur le bilan radiatif terrestre, lié au changement climatique, est aujourd'hui indéniable mais peu connu. De plus, ils réduisent la visibilité et affectent la santé des populations. Parce que ces phénomènes sont liés à la composition chimique de l'AOS, il est indispensable de l'inclure dans les modèles pour mieux estimer ses impacts climatiques et sanitaires. Ceci implique de réaliser des expériences à partir de COVs précurseurs, dans des conditions contrôlées, proches des conditions atmosphériques réelles, en chambres de simulation. Pour définir des voies de formation, la composition de l'AOS ainsi formé doit être déterminée à un niveau moléculaire. Or il n'existe pas aujourd'hui de technique d'analyse standard de l'AOS. C'est dans ce contexte que s'inscrit ce travail qui a consisté à développer une technique basée sur l'extraction supercritique couplée à la chromatographie gazeuse et la spectrométrie de masse. Cette technique a été validée en étudiant l'AOS issu de l'oxydation d'un précurseur d'origine biotique et appliquée à l'étude de l'AOS issu de l'oxydation de trois précurseurs différents pour lesquels nous avons pu identifier et quantifier des composants de l'AOS et proposer des voies de formation. Ce travail contribue donc à une meilleure compréhension des processus de formation et d'évolution de l'AOS et permet ainsi de mieux en appréhender les effetsThe atmosphere is a complex System in which gaseous, liquid and particulate phases coexist. Indeed, it contains particle in suspension, either solid or liquid, called aerosols. Atmospheric photo-oxidation of volatile organic compounds (VOCs) may lead to the formation of particulate matter, also called secondary organic aerosol (SOA). Hence, SOA is nowadays known to play an important role in the radiative balance, linked to climate change. At a local scale, it also reduces visibility and causes health effects. Because these phenomena are associated to SOA chemistry, it is necessary to include it in atmospheric models in order to better assess SOA climate and health impact. This implies to carry out investigations focused on specific precursors and performed in close to real and controlled conditions. Atmospheric simulation chambers are essential tools to achieve this task. Moreover, to elucidate comprehensive mechanism, SOA chemical composition has to be determined at a molecular level. However, no standard technique for SOA analysis exists. In this context, the aim of this work was to develop such a technique based on supercritical fluid extraction directly coupled to gas chromatography and mass spectrometry technique. After the development phase, this technique has been validated by studding SOA formed from a biogenic VOC precursor and used to study SOA formed from three precursors of different origin. In each case, we managed to identify and quantify some SOA components and propose formation pathways. Thus, this work contributes to a better understanding of SOA formation and evolution pathways in the atmosphere and consequently allows to better assess its effects
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Mignardi, Giuliano. "Ca3Co4O9+δ, cathodes innovantes : optimisation de la microstructure et de la composition." Thesis, Lille 1, 2014. http://www.theses.fr/2014LIL10155/document.
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Cette thèse porte sur l’optimisation en termes de microstructure et de composition des propriétés électrochimiques du composé Ca3Co4O9+δ pour une application comme cathode pour Pile à Combustible à Oxyde. En utilisant la sérigraphie comme technique de dépôt, la Résistance Surfacique Spécifique a été diminuée jusqu’à 0.5 Ωcm² à 700°C pour un matériau composé de 50% en masse d’oxyde de cérium dopé au gadolinium et Ca3Co4O9+δ. Par ailleurs, des techniques telles que le spin-coating et l’électro-spray apparaissent comme prometteuse pour l’amélioration des performances. Nous avons tenté d’étudié l’impact de la substitution partielle sur le site calcium sur les performances électrochimiques pour différents dopants (Sr, Pb, Bi, La). Du fait que les performances électrochimiques dépendent fortement de la préparation et de la faible concentration en dopant contrainte par la faible solubilité du plomb en site calcium, il n’a pas été possible de tirer des conclusions claires sur l’impact d’un tel dopage, de même pour les propriétés de transport de l’oxygène. Par contre, l’analyse par échange Isotopique Pulsé de la composition (Ca0.90Sr0.10)3Co4O9+δ a permis de confirmer les très bonnes cinétiques d’échange de l’oxygène pour les composés partiellement substitués par du strontium, montrant par ailleurs que ni l’adsorption en surface de l’oxygène ni son incorporation dans le solide sont des étapes limitantes dans le mécanisme d’échange en surfaceIn this PhD thesis, the electrochemical performances of the misfit layered oxide Ca3Co4O9+δ used as a cathode for Solid Oxide Fuel Cell were tentatively optimised by optimisation of the electrode microstructure and composition. Using screen printing as a deposition technique, the Area Specific Resistance was decreased to 0.5 Ωcm2 at 700°C for a composite made of 50% in weight of cerium gadolinium doped oxide and Ca3Co4O9+δ. Spin coating and electro-spray deposition were also tested as promising technique to improve the performances. The impact of partial substitution of the calcium site on the electrochemical performances was tentatively studied with a wide range of dopant (Sr, Pb, Bi, La). It was difficult to draw conclusions since their performances depend strongly on the sample preparation. Moreover, due to the low amount of the dopant, imposed by the low solubility of lead in the calcium site, it was not possible to derive a clear tendency of the substituent’s impact on the oxygen transport properties. However, by pulse isotopic exchange, high surface exchange kinetics were confirmed for the (Ca0.90Sr0.10)3Co4O9+δ composition and it was shown that neither the oxygen adsorption of the surface nor the oxygen incorporation in the solid were the limiting step in the oxygen transfer
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Williams, Denise Rochelle. "The vagaries of voice in the composing process." CSUSB ScholarWorks, 1989. https://scholarworks.lib.csusb.edu/etd-project/445.
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Diallo, Mamadou Cellou Bogoma. "Etude de la composition botanique des régimes alimentaires des ruminants domestiques (bovins, ovins et caprins) en région soudano-sahélienne par analyse histologique des fèces : approche méthodologique." Montpellier 2, 1991. http://www.theses.fr/1991MON20200.
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Ce travail methodologique vise a utiliser l'analyse histologique des feces pour etudier les regimes alimentaires des herbivores exploitant des paturages en zone soudano-sahelienne. Il a necessite la realisation prealable d'un catalogue de references ayant 108 especes reparties en 29 familles botaniques. On a observe que, la liste des plantes identifiees au microscope est independante du mode de conservation des feces (sechage, sel, formol et alcool), contrairement a la contribution quantitative de leurs epidermes sur les lames-echantillons. Deux (2) lames suffisent pour determiner la composition botanique d'un echantillon. En zone agro-pastorale, la saison, d'un meme troupeau paturant ensemble peut varier suivant: la methode dee preparation des echantillons, la saison, les choix alimentaires individuels et le jour de paturage. La methode classique ou nulle en saison seche (avril/mai) devient normale (70 a 80% d'epidermes sur les lames) en saison de pluies (octobre). La centrifugation des refus des tamis, mise au point par cette etude, a permis, pour toutes les especes animales (bovins, ovins, caprins) et les saisons, d'ameliorer la detection des epidermes (90 a 100% d'epidermes sur les lames) notamment de dicotyledones. Les choix individuels varies permettent de separer les bovins en groupes qui conduisent a classer les plantes en especes: delaissees, peu ou fortement consommees, consommees de facon preferentielle et contribuant fortement a tous les regimes. Les resultats montrent qu'il faut prelever 10 echantillons individuels de feces de bovins/jour pour realiser une etude fiable. Les variations journalieres etablies avec 5 bovins ne permettent pas de calculer le nombre de jours de prelevement pour caracteriser le regime d'une periode. Il est donc possible d'utiliser l'analyse histologique des feces pour etudier les regimes des ruminants sur les ecosystemes patures soudano-saheliens. Toutefois, il faudra evaluer la surestimation et la sous-estimation des vegetaux au laboratoire
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Rivière, Cécilia. "Intérêts des mesures d'impédance électrique pour le contrôle de produits carnés divisés contenant des morceaux : application à la composition des rillettes." Compiègne, 1998. http://www.theses.fr/1998COMP1117.
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Les industries alimentaires ont besoin de techniques d'analyse compatibles avec les cadences de production. La détermination rapide de la composition de produits carnés divisés en émulsion permettrait de supprimer les opérations de fractionnement et de mélange, d'où des gains de productivité, ainsi qu'une diminution des risques bactériologiques. La spectrométrie d'impédance, technique développée à l'origine dans les domaines médicaux, trouve aujourd'hui de nouvelles applications en agro-alimentaire. Nous avons ici étudié la faisabilité de son utilisation pour mesurer la composition des rillettes. Après avoir défini un dispositif expérimental adapté à la problématique, une phase expérimentale portant sur des solutions salines a permis de valider le système de mesures développé. En réalisant des essais sur ces produits, nous avons vérifié l'influence de la température sur les mesures électriques. En faisant varier la composition du milieu par des ajouts de gras ou de jus, nous avons construit des modèles représentatifs des variations observées, qui permettent de retrouver les teneurs en eau et en lipides à ± 1,5 % à partir du module d'impédance mesuré à 5 kHz. La réalisation d'essais selon un plan central composite à température constante (61 ± 1 °C) nous a conduits à identifier des lois de variation de la phase et du module d'impédance en fonction de la composition. Elles sont adéquates, sensibles et prédictives : les mesures électriques permettent, à température constante, de détecter des changements de la composition du milieu analysé. Ces essais ont aussi montré que l'impédancemétrie est une méthode répétable d'estimation de la composition. Les relations construites à partir des mesures électriques permettent de retrouver la teneur en eau à ± 2,5 % et celle des lipides à ± 3,5 %. L'approche théorique de la spectrométrie de phase a montré que le milieu est résistif dans une plage de fréquences. Nous avons vérifié que pour ces fréquences la phase mesurée est ± 15°.
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Puckett, James L. "Part I: Concerto for Percussion Quartet and Wind EnsemblePart II: The Compositional Technique of Joseph Schwantner as presented in LUMINOSITY "Concerto for Wind Orchestra"." Kent State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent1554805885529634.
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Younis, Ahmed. "Protection of Aluminum Alloy (AA7075) from Corrosion by Sol-Gel Technique." Doctoral thesis, Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-83230.
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Die vorliegende Arbeit beschäftigt sich mit der Entwicklung von Sol-Gel-Beschichtungen durch Optimierung der Ausgangszusammensetzung und der Applikations-Parameter für den Korrosionsschutz der Aluminium-Legierung AA7075. Verschiedene Arten von Silanen, z. B. Tetraethoxysilan (TEOS), Phenyltriethoxysilan (PTES) und Phenyltrimethoxysilan (PTMS) sind verglichen worden: Der Sol-Gel-Film aus PTMS präpariert, weist dabei die höchste Hydrophobizität auf, was sich insbesondere in den Barriere-Eigenschaften dieser Verbindung zeigte. Die Wirkung von Essigsäure als Katalysator in Sol-Gel-Prozessen wurden untersucht, um die optimale Katalysatorkonzentration für den Korrosionsschutz der beschichteten Proben zu ermitteln. Die Korrosionsbeständigkeit der beschichteten Proben sinkt bei höheren Konzentrationen des sauren Katalysators durch die Auflösung des Aluminiumoxids an der Substratoberfläche. Allerdings führten zu niedrige Konzentrationen des Katalysators zur Verlangsamung der Hydrolysereaktionen der Silane und es bildete sich poröse Sol-Gel-Schichten. Die Wärmebehandlung der beschichteten Aluminium-Proben ist für die Vernetzung des Films erforderlich. Eine Wärmebehandlung bei 300 ˚C für 2,5 Stunden ergab dabei den besten Korrosionsschutz. Höhere Temperaturen führten zu einer Verschlechterung der Eigenschaften der Filme, was mit der Zerstörung des organischen Teil des Films erklärt werden kann. Darüber hinaus verursachen zu niedrige Temperaturen einen geringeren Korrosionsschutz der beschichteten Aluminium-Proben. Vermutlich ist die geringe Vernetzung des Sol-Gel-Films bei Temperaturen was für als 300 ˚C verantwortlich. Die beschichteten Aluminium-Proben wuden mittels Raster-Elektronenmikroskopie (SEM), Energiedispersive Röntgenspektroskopie (EDX), Röntgen-Photoelektronenspektroskopie (XPS) und elektrochemischen Techniken charakterisiertThe present work pertains to the development of sol-gel coatings by optimizing the composition and the application parameters for corrosion protection of aluminum alloy AA7075. Different kinds of silanes e.g. tetraethoxysilane (TEOS), phenyltriethoxysilane (PTES) and phenyltrimethoxysilane (PTMS) have been compared: the sol-gel film prepared from PTMS shows highest hydrophobicity manifested by the best barrier property of this compound. The effect of acetic acid as a catalyst on the chemistry of the sol is investigated in order to estimate the best catalyst concentration for better corrosion protection of the coated samples. The corrosion resistance of the coated samples is found to be decreasing at higher concentrations of the catalyst due to the dissolution of the aluminum oxide at the substrate surface in the acid sol. However, lower concentrations of the catalyst lead to low hydrolysis reactions of the silanes and non-dense sol-gel films have been formed. The heat treatment of the coated aluminum samples is required for cross-linking of the film. The heat treatment at 300 ˚C for 2.5 hours exhibits the best corrosion protection. Higher treatment-temperatures lead to degradation of the properties of the film which can be described in terms of destroying the organic part of the film. Moreover, low treatment-temperatures cause low corrosion protection of the coated aluminum samples which is presumably attributed to the low cross-linking of the sol-gel film at temperatures less than 300 ˚C. The coated aluminum samples are characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS) and electrochemical techniques
39
Mahato, Joyanto. "Comparative study of three Fe (III)-ion reducing bacteria gives insights into bioelectricity generation in the MFC technique." Thesis, Högskolan i Skövde, Institutionen för biovetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-18598.
Full textAbstract:
Microbial fuel cell (MFC) technology is a renewable energy source that employs microorganisms as biocatalysts to degrade substrates into electrons and protons, and then transfer the electrons to the anode electrode. Electron transfer rates by microorganisms depend on many factors as well as on their diverse electron transfer mechanisms. The present study compared cytochromes, flavoproteins, electron transfer complexes, redoxins and other extracellular membrane proteins that have direct involvement in electron transfer mechanisms in Escherichia coli str. K-12 MG1655, Rhodopseudomonas pulastris DX-1 and Shewanella oneidensis MR-1. Escherichia coli str. The results showed that K-12 MG1655 had a more diverse range of extracellular proteins for electron transfer mechanisms compared to Rhodopseudomonas pulastris DX-1 and Shewanella oneidensis MR-1. Escherichia coli str. K-12 MG1655 expressed more flavoproteins, redoxin and electron transfer complex related proteins that had direct involvement in electron transfer mechanisms compared to two other bacterial species indicating that it may be able to transfer more electrons when employed in MFC technique. Escherichia coli str. K-12 MG1655 expressed 16 cytochromes, 9 flavoproteins, 6 redoxins, 6 electron transport complexes, 1 hypothetical and 1 oxidoreductase proteins. On the other hand, Rhodopseudomonas pulastris DX-1 and Shewanella oneidensis MR-1 expressed 26 and 35 cytochromes proteins. But these two bacterial species expressed less flavoproteins and redoxin related proteins and they didn’t express any electron transport complexes or hypothetical and oxidoreductase related proteins for electron transfer. STRING and SMART results suggested that the identified proteins transferred electrons either by connecting with other types of identified proteins in the constructed gene network or independently by taking part in oxidation-reduction reaction, metal ion reduction reaction or by their FMN binding activities.
40
Douguet, Marc. "La composition dramatique : La liaison des scènes dans le théâtre français du XVIIe siècle." Thesis, Paris 8, 2015. http://www.theses.fr/2015PA080114/document.
Full textAbstract:
Au XVIIe siècle, la composition dramatique (c’est-à-dire l’art de faire se rencontrer les personnages sur le plateau en un certain ordre pour raconter une histoire) est révolutionnée, aux alentours de 1640, par l’instauration de la règle de la liaison des scènes, qui prescrit que, à l’intérieur d’un acte, un personnage au moins soit commun à deux scènes successives. Cette règle a totalement et durablement changé l’aspect des pièces de théâtre en imposant une esthétique de la continuité qui rompt avec la discontinuité qui prévalait jusqu’alors. Dans les pièces du début du siècle, l’action progressait par la juxtaposition de scènes qui présentaient chacune des personnages différents, permettant ainsi au dramaturge d’introduire de brusques changements dans les lieux, les temps et les situations. Au contraire, les pièces qui respectent la règle de la liaison des scènes ne peuvent plus compter que sur les entractes pour renouveler complètement les personnages présents sur le plateau : à l’intérieur des actes, l’action doit évoluer par glissements successifs, chaque scène conservant une partie des paramètres de la scène précédente. En mettant en lumière les choix auxquels le dramaturge est confronté, la différence entre ces deux esthétiques témoigne de l’importance de la composition dramatique : écrire une pièce, ce n’est pas seulement imaginer une intrigue, mais aussi lui donner une forme visuelle et spécifiquement théâtrale. Ce travail s’intéresse donc à la fois aux enjeux propres à la liaison des scènes, et, plus généralement, à la poétique de la disposition des scènes et au « montage » dramatique auquel le dramaturge se livre pour donner corps à la fictionIn the seventeenth century, dramatic composition, that is, the art of introducing characters on stage in a specific order to relate a story, was revolutionized in the period around 1640 by the establishment of the rule for linking scenes. This new rule decreed that within one act, at least one a character must appear in the two successive scenes. This rule completely changed the aspect of plays in the long term. It imposed an aesthetics of continuity that broke with the discontinuity that had prevailed up until then. In plays from the beginning of the century, action progressed by the juxtaposition of scenes that each presented different characters, thus permitting the playwright to introduce abrupt changes in place, time, and situation. On the contrary, the plays that respect the rule of connection between scenes can no longer count on the intermission alone to renew completely the characters present on stage. Within each act, the action must evolve by successive shifts in meaning, each scene conserving a part of the parameters of the preceding scene. By shedding light on the choices the playwright confronts, the difference between these two aesthetics bares witness to the importance of dramatic composition: writing a play is not simply imagining a plot, but rather giving it a visual form and specifically a theatrical one. This dissertation thesis, then, is interested in both the stakes of the rule for linking scenes itself, and more generally, in the poetics of the positioning of scenes, and in dramatic “editing” with which the playwright engages in order to give body to fiction
41
Costa, Maria Liliana Miranda da. "Processo de criação e percursos metodológicos: itinerários e territórios da Companhia da Arte Andanças." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/27/27155/tde-17052013-163434/.
Full textAbstract:
O presente trabalho consiste no estudo histórico-descritivo (pesquisa teórica e de campo) sobre o trabalho da Companhia da Arte Andanças (Fortaleza-Ceará), apresentando algumas metodologias utilizadas em processos de aula e criação cênica, com o intuito de contribuir para a discussão e ressignificação de modos de fazer e conceber a práxis do ator-bailarino-performer. Proponho um olhar sobre o processo de criação do espetáculo O Tempo da Paixão ou o Desejo é um Lago Azul, livremente inspirado na obra do artista plástico cearense José Leonilson (1957-1993). Num primeiro momento descrevo o percurso e as atividades da Cia., bem como alguns de seus modos operacionais; na segunda parte exponho princípios e métodos de trabalho; no terceiro capítulo adentro no processo de montagem do supracitado espetáculo, pontuando aspectos de sua singularidade; e, por fim, teço uma breve reflexão sobre a relação entre técnica, criação e pessoalidade, cujos entrelaçamentos, suponho, tensionam uma composição dramatúrgico-afetiva.This work consists of a historic-descriptive study, based on theoretical and field research, of the work of Companhia da Arte Andanças, in Fortaleza, Brazil, presenting some methodologies employed throughout processes in class of scenic creation in order to contribute to the discussion and the \"resignification\" of different ways of making and understanding the praxis of the actor/dancer/performer. I propose a new look at the creation process of the play \"O Tempo da Paixão ou O Desejo é um Lago Azul\", which was liberally inspired by the work of the visual artist, José Leonilson (1957-1993), from Ceará, Brazil. In the first part, I describe the trajectory and the activities of the company, along with some of its modes of operation. In the second part, I focus the discussion on the principles and methods of its work. In the third part, I immerse myself in the process of assemblage of the afore mentioned play, sampling aspects of its uniqueness. Finally, I present a brief reflection of the relation between technique, creation, and personality, whose connections are supposed to tense a dramaturgical-affective composition.
42
Kenmegne, Kamdem Amos Théophile. "Étude des propriétés mécaniques de la viande en relation avec le procédé de hachage." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL015N.
Full textAbstract:
Bien que l'importance du hachage ou du broyage soit indéniable dans l'industrie et particulièrement dans l'industrie alimentaire, très peu d'études ont été entreprises dans ce domaine ces deux dernières décennies. L’utilisation de ce procédé s'est beaucoup accrue dans l'industrie de la viande à partir de la fin des années 60, avec la mise au point du steak haché pour répondre aux besoins des armées et valoriser les quartiers avant de bovin très peu adaptés à la consommation directe de part leur faible tendreté. Des lors, il devient intéressant de comprendre les relations entre la texture et les paramètres de ce procédé, dans l'optique de son optimisation. Dans ce travail, on a d'abord étudie l'aptitude d'un hachoir électrique instrumenté à l'évaluation des propriétés texturales de la viande. Cette méthode donne des résultats comparables à ceux obtenus par des techniques traditionnelles comme la compression uniaxiale, le tranchage et la relaxation ; avec cependant une moindre dispersion sur les mesures. Ensuite on a étudié l'influence des conditions opératoires et du traitement thermique de la viande sur les paramètres de hachage (couple déployé, énergie consommée et débit du hachoir). Dans l'ensemble les conditions analysées ont un effet très significatif sur les caractéristiques de hachage, de même que les modifications de structure et de composition qui accompagnent le chauffage de la viande. Enfin grâce à des lois développées en génie des procédés et de nouvelles équations que nous proposons, on a tenté de modéliser l'énergie de hachage. L’exploitation de la théorie de Darnell et Mol a permis la prédiction du débit du hachoir
43
Jost, Pierre. "Apport de technique informatiques a l'etude des complexes polynucleaires du nolybdene vi : equilibres de formation et cinetique de condensation en milieu nacl 0,1 m." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13112.
Full textAbstract:
La methode proposee consiste a combiner la methode de la surface potentiometrique de bye-lefebvre, une methode de regression non lineaire et une methode de simulation statistique. Etude des equilibres de formation des isopolyanions molybdiques. On propose un mecanisme de type sn2 pour les reactions de decondensation et d'hydrolyse des ions trimolybdiques et tetramolybdiques
44
Jaradeh, Majed. "The Effect of Processing Parameters and Alloy Composition on the Microstructure Formation and Quality of DC Cast Aluminium Alloys." Doctoral thesis, KTH, Materialvetenskap, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4205.
Full textAbstract:
The objective of this research is to increase the understanding of the solidification behaviour of some industrially important wrought aluminium alloys. The investigation methods range from direct investigations of as-cast ingots to laboratory-scale techniques in which ingot casting is simulated. The methods span from directional solidification at different cooling rates to more fundamental and controlled techniques such as DTA and DSC. The microstructure characteristics of the castings have been investigated by optical and Scanning Electron microscopy. Hardness tests were used to evaluate the mechanical properties. The effects of adding alloying elements to 3XXX and 6XXX aluminium alloys have been studied with special focus on the effects of Zn, Cu, Si and Ti. These elements influence the strength and corrosion properties, which are important for the performance of final components of these alloys. Solidification studies of 0-5wt% Zn additions to 3003 alloys showed that the most important effect on the microstructure was noticed at 2.5 wt% Zn, where the structure was fine, and the hardness had a maximum. Si addition to a level of about 2% gave a finer structure, having a relatively large fraction of eutectic structure, however, it also gave a long solidification interval. The addition of small amounts of Cu, 0.35 and 1.0 wt%, showed a beneficial effect on the hardness. Differences have been observed in the ingot surface microstructures of 6xxx billets with different Mg and Si ratios. Excess Si compositions showed a coarser grain structure and more precipitations with possible negative implications for surface defect formation during DC casting. The comparison of alloys of different Ti content showed that the addition of titanium to a level of about 0.15 wt% gave a coarser grain structure than alloys with a normal Ti content for grain refinement, i.e. < 0.02 wt%, although a better corrosion resistance can be obtained at higher Ti contents. The larger grain size results in crack sensitivity during DC casting. A macroscopic etching technique was developed, based on a NaOH solution, and used in inclusion assessment along DC cast billets. Good quantitative data with respect to the size and spatial distribution of inclusions were obtained. The results from studied billets reveal a decreasing number of inclusions going from bottom to top, and the presence of a ring-shaped distribution of a large number of small defects in the beginning of the casting. The present study shows how composition modifications, i.e. additions of certain amounts of alloying elements to the 3xxx and 6xxx Al alloys, significantly change the microstructures of the materials, its castability, and consequently its mechanical propertiesQC 20100901
45
Kahn, Olivier. "Temps verbaux, point de vue et composition dans les romans de Claude Simon : approche stylistique et génétique." Thesis, Paris 8, 2017. http://www.theses.fr/2017PA080044/document.
Full textAbstract:
Cette thèse met en valeur les liens que les temps verbaux et la construction textuelle du point de vue entretiennent avec la composition des romans de Claude Simon écrits à partir du Vent (1957). En nous appuyant sur la théorie des systèmes de temps et en la revisitant à partir de l’emploi des temps verbaux dans ses romans, nous montrons en quoi l’écriture de l’écrivain conteste des systèmes verbotemporels et un système narratif historiquement datés au regard d’une écriture qui s’émancipe des schémas qui les motivent. Nous démontrons de même que la temporalité et la construction textuelle du point de vue dans ces romans sont au service de la plasticité de la composition romanesque. L’analyse verbotemporelle de notre corpus s’articule, conjointement à celle de la ponctuation, de la syntaxe, de l’énonciation et du point de vue narratif, avec la composition des romans. L’approche stylistique de tous ces aspects se conjugue à l’approche génétique, qui permet dans de nombreux cas d’expliquer plus justement le processus d’élaboration de la composition et du style. La prise en compte de la composition nous paraît s’imposer au vu des ruptures radicales avec un système romanesque périmé, qui nous amènent à déplacer le champ des repères de l’analyse critique. On pourrait dire, en paraphrasant Mallarmé, que dans les romans de Claude Simon, la composition rémunère le défaut des repères traditionnels du temps. De même que la syntaxe et la ponctuation ne se pensent plus à l’échelle de la phrase, chez Claude Simon, nous considérons que les temps verbaux et la notion de point de vue doivent aussi s’envisager à l’échelle du roman et de ses macrostructures, ce qui nous conduit à mettre particulièrement en valeur la composition de deux romans, La Route des Flandres et Le Jardin des Plantes, qui, faisant alterner temps présent et temps du passé, permettent de bien rendre compte de leur composition verbotemporelle. Cette recherche, qui s’intéresse en premier lieu au renouvellement de la langue littéraire par Claude Simon, contribue par voie de conséquence au renouvellement de la méthodologie critique qui permet de la mettre en valeur. Elle montre à partir de l'étude stylistique et génétique du roman simonien comment la littérature conduit à revoir l'approche linguistique de la langue au-delà de la phrase mais aussi comment la poétique narrative rouvre l'usage de la langueThis thesis highlights the relations between verb tenses and textual viewpoint construction and the composition of Claude Simon’s novels as of Wind (1957).Adopting the tense systems theory and revisiting it in connection with the use of verb tenses in the author’s novels, we show how his writing challenges verb-tense systems and a narrative system historically dated with respect to a writing that breaks free from the frames that motivate them. We shall equally show that in these novels temporality and textual viewpoint construction contribute to the plasticity of the novelistic composition. The verb-tense analysis of our corpus, together with that of punctuation, syntax, enunciation, and narrative viewpoint, is articulated in keeping with the composition of the novels. The stylistic approach of all these aspects is combined with the genetic approach, in many instances allowing to explain more accurately the elaboration process of composition and style. Composition must be kept in mind if we consider the radical breaks with a dated novelistic system that lead us to shift the field of reference of the critical analysis. We might say, paraphrasing Mallarmé, that in Claude Simon’s novels, composition makes up for the absence of the traditional timeline. Just as syntax and punctuation are no longer conceived on the scale of the sentence, in Claude Simon we consider that verb tenses and the notion of viewpoint should also be analyzed on the scale of the novel and its macrostructures. This induces us to dwell particularly on the composition of two novels, The Flanders Road and Le Jardin des Plantes: by alternating present time and past time they allow to fully account for their verb-tense composition. This study, that above all concerns Claude Simon’s renewal of the literary idiom, as a consequence contributes to the renewal of the critical methodology allowing to highlight it. Starting from the stylistic and genetic study of Simon’s novels, it shows how literature incites to revise the linguistic approach to language beyond the sentence, but also how narrative poetics reopen the use of language
46
Azrar, Hassane. "Contribution à la valorisation des sédiments de dragage portuaire : technique routière, béton et granulats artificiels." Thesis, Lille 1, 2014. http://www.theses.fr/2014LIL10171/document.
Full textAbstract:
Face aux problématiques de gestion des sédiments de dragage portuaire, aujourd'hui, il apparait nécessaire de trouver des solutions potentielles de valorisation permettant de répondre efficacement à ces problématiques. La valorisation en génie civil, des sédiments des port de Saint Louis et de Dunkerque, présente une solution alternative à la gestion de ces matériaux. les travaux menés dans le cadre de cette thèse se focalisent d'une part, sur la valorisation des sédiments de Saint louis en technique routière et d'autre part, sur la valorisation des sédiments de Dunkerque en béton ainsi qu'en granulats artificiels. Après la caractérisation physico-chimique, minéralogique et mécanique, l'impact environnemental des sédiments bruts du Port de Saint Louis et le potentiel d'utilisation de ces matériaux en technique routière sont évalués. L'étude de formulation de matériaux, pour une utilisation en couche de fondation, s'est fondé sur une méthode expérimentale de détermination de compacité maximale. les mélanges granulaires optimaux remplissent les conditions d'utilisation en couche de fondation sont ensuite évalué au travers d'essais de lixiviation. La partie béton concerne la formulation des bétons à base de sédiment. Après la caractérisation de ces matériaux, trois bétons ont fait l'objet d'une étude de durabilité face à l'attaque sulfatique externe associé à une caractérisation non destructive en vue d'étudier l'influence d'incorporation des sédiments sur les propriétés des bétons. La partie granulats artificiels présente d'étude de faisabilité de granulats à base de sédiments, l'assiette granulaire et la technique de big-bag sont les deux méthodes de confection utiliséesIn front of problems of management of harbour dredging sediment, today, it appears necessary to find potential solutions of valosisation allowing to answer effectively these problems. the valorisation in civil engineering, of not immergeables sediments of ports of Dunkirk and Saint Louis, presents an alternative solution to the management of these materials. the works undertaken within the framework of this thesis are focused on the one hand, on the valorisation of Saint Louis sediment in road construction, and the other hand on the valorisation of Dunkirk sediment in concrete as well as artificials agregates. After physicochimical characterisation, mineralogical and mechanical, environmental impact of raw sediment of Saint Louis harbour and the potential use of these materials in road constuction are evaluated. the study of formulation of materials, for use in layer fondation, was based on an experimental method of determination of maximum compactness. The optimal granular mixtures fulfilling the terms of a use in a layer fondation are the evaluated through leaching tests. The concrete party concerns the formulation of the concretes containing Dunkerk sediment. After the characterisation of these materials, three concretes were the object of a durability study vis-a-vis the external sulphate attack associated with a not destructive characterisation in order to study the influence of incorporation of sediment on properties of concretes. The artificial aggregates party presents the feasibility study of aggregates with sediment, the granular plate and the big-bag technique are two making method used
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Waligora, Julien. "Obtention de granulats stables de laitier d'aciérie de conversion LD pour une utilisation en technique routière : étude appliquée au site d'ArcelorMittal Dunkerque." Thesis, Lille 1, 2008. http://www.theses.fr/2008LIL10162/document.
Full textAbstract:
Les laitiers d'aciérie de conversion LD sont des co-produits industriels résultant de l'élaboration d'acier en convertisseur à oxygène suivant le procédé Linz-Donawitz. En raison d'un important potentiel d'instabilité, attribué à la chaux et la magnésie vive qu'ils contiennent, ils sont très peu utilisés en technique routière. Ces travaux de thèse, portant sur les laitiers LD produits sur le site d'ArcelorMittal Dunkerque, avaient deux objectifs principaux: (i) identifier les phases minérales mises en cause dans leur instabilité et comprendre les mécanismes qui conduisent aux désordres dimensionnels, (ii) parvenir à isoler sur site industrielles coulées de laitier qui sont suffisamment stables pour une utilisation en technique routière. Il a été montré, par le biais de caractérisations chimique et minéralogique très fines, que ces laitiers contiennent des silicates calciques (essentiellement du silicate bicalcique et très ponctuellement du silicate tricalcique), des ferrites de calcium, des oxydes de fer et deux formes de chaux vive: des nodules et des micro-inclusions. Il a également été établi qu'en l'absence de magnésie vive, la chaux vive est la seule phase minérale à l'origine des désordres dimensionnels et que sa répartition dans les granulats (nodules, micro-inclusions) a une incidence majeure sur leur instabilité. Il semble d'autre part possible, en sélectionnant les coulées de laitier selon des critères précis sur site industriel, de produire des granulats utilisables en enrobé, en couches de base et de fondation ou en enduit superficiel. Ces travaux ouvrent par conséquent de nouvelles perspectives de valorisation des laitiers d'aciérie de conversion LDLD converter steel slags are industrial by-products resulting from Linz-Donawitz steelmaking process in oxygen converters. Due to a dimensional instability, attributed to lime and magnesia contained into slag grains, they are not much valuated in road construction. The aim of this PhD thesis, concerning LD steel slags coming from ArcelorMittal Dunkirk steelmaking plant, was : (i) identify the minerai phases responsible for their instability and understand the mechanisms leading to dimensional damages, (ii) isolate into the steelmaking plant the slag outflows that are sufficiently stable for an use in road construction. Carefully chemical and mineralogical characterisations of these slags showed that they contain calcium silicates (essentially dicalcium silicate and punctually tricalcium silicate), calcium ferrites, iron oxides and two forms of lime: sorne nodules and sorne micro-inclusions. It was also established that without the presence of magnesia, lime is the only phase responsible for dimensional damages and that its distribution into slag grains (nodules, micro-inclusions) has a major influence on their stability. Moreover, taking account of certain industrial parameters, it is expected to produce stable slag grains and to incorporate them into wearing course, roadbase, base course or surface dressing. This work finally provides a new way for valuating LD converter steel slags
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Babayigit, Elif Fatma. "A Usability Evaluation Framework And A Case Study On A Supplier Portal System." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/2/1224864/index.pdf.
Full textAbstract:
ABSTRACT
A USABILITY EVALUATION FRAMEWORK AND A CASE STUDY
ON A SUPPLIER PORTAL SYSTEM
Babayigit, Elif Fatma
M.Sc., Department of Industrial Engineering
Supervisor: Assoc. Prof. Dr. Tayyar Sen
December 2003, 229 pages
The goal of this thesis is to provide a usability evaluation framework in the area
of e-procurement technologies and a case study on this base. A survey of the
concepts of human computer interaction, usability and usability evaluation
techniques is carried out. Additionally current e-procurement technologies are
explored and specifically a Company&rsquos Supplier Portal System which was employed in year 2003, as an e-procurement technology for the procurement of direct goods, is taken into consideration. Pointing from the findings of the survey, a usability evaluation methodology is developed based on user and task analysis of the Supplier Portal. Within this methodology, in terms of performance metrics of the Supplier Portal, usability attributes to be measured are determined and a checklist for a heuristic system evaluation is developed. iv While a laboratory testing structure is proposed for the case, a usability satisfaction survey and empirical usability tests are implemented with the actual users of the Company Supplier Portal. Descriptive and inferential formal analyses of the survey and field test results are studied, contributing to the Usability Evaluation of the Portal. Lastly further prospects are pointed, where usability, formal analysis, supply chain management and systems design intercept.
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Perini, Elisa. "Les poèmes de voyage de Magnus Felix Ennodius (carm. 1, 6 = 2V; 1, 1 = 245V; 1, 5 = 423V) : édition, traduction et commentaire." Thesis, Paris 4, 2012. http://www.theses.fr/2012PA040072.
Full textAbstract:
La Dictio Ennodi diaconi quando de Roma rediit, l’Itinerarium Brigantionis castelli et l’Itinerarium (Padi) de Magnus Felix Ennodius peuvent être qualifiés d’«hodoéporiques», d’après l’occasion dont ils tirent leur inspiration, même si la description des phénomènes naturels hostiles à l’homme l’emporte sur la narration du voyage. Ces textes sont très utiles dans le domaine des études sur Ennodius, pour les éléments autobiographiques, la technique de composition, les réminiscences classiques et chrétiennes, les sujets traités, etc. L’étude commence par une introduction générale sur Ennodius et son corpus, sur la tradition manuscrite et la genèse de la «collection». Après la description des manuscrits utilisés pour l’édition, on trouve une présentation d’ensemble de trois compositions, qui vise à relever leurs caractéristiques communes, en posant d’attention à l’évolution de la poétique d’Ennodius. L’introduction s’achève par une section où sont illustrés les principes utilisés dans la structure de l’apparat critique (de type négatif) et où sont justifiés certains choix textuels différents par rapport aux éditions précédentes; on trouvera enfin une liste des symboles et des sigla codicum. À chaque composition est associée une vaste introduction. Le texte critique est suivi d’une traduction intégrale et d’un commentaire ad verbum. L’étude se termine par plusieurs considérations conclusives sur l’hodoéporique ennodienne. Suivent les listes des œuvres ennodiennes (citées selon la correspondance entre les numérations de Sirmond-Hartel et de Vogel), des abréviations et des indications bibliographiquesThe Dictio Ennodi diaconi quando de Roma rediit, the Itinerarium Brigantionis castelli and the Itinerarium (Padi) of Magnus Felix Ennodius, as regards the occasion they move from, can be considered as ‘hodoeporic’, even if they reserve much more attention to the description of natural world – usually cruel and hostile – than to the travel story itself. The importance of natural descriptivism is just one of the peculiarities of these poems. They’re very useful to Ennodian studies, for autobiographical information, stylistic and technical features, literary models, Classical and Christian allusions, themes dealt. The present study starts from a general introduction on Ennodius and his corpus, giving attention to matters still not clarified by critics; it also deals with the genesis of the 'collection' of Ennodius’ works and after a description of the main manuscripts used for the edition, we find a presentation of the three compositions, in order to illustrate topoi and main features and to gather the evolution of Ennodius’ style and his literary conceptions. The introduction ends with a section dedicated to the structure of the critical apparatus and to the sigla codicum. The commentary (ad verbum) is preceded by a long introduction on each poem; then we find the critical text and the translation, the first integral into Italian. The study ends with some final considerations about Ennodian hodoeporic. Then we find a list of Ennodian works cited and the bibliographic references
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Velloso, José Henrique Padovani 1981. "Música e técnica : reflexão conceitual, mecanologia e criação musical." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/284497.
Full textAbstract:
Orientador: Silvio Ferraz Mello FilhoTese (doutorado) - Universidade Estadual de Campinas, Instituto de Artes
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Resumo: O objetivo do trabalho é discutir a questão das técnicas nos processos criativos relacionados a práticas musicais e sonoras ao (1) realizar uma investigação reflexiva/conceitual; (2) ao realizar uma abordagem mecanológica de determinadas técnicas musicais/sonoras; e (3) ao apresentar trabalhos de criação realizados durante o doutorado. Essas três abordagens são apresentadas, respectivamente, nas três partes do trabalho - consideravelmente independentes entre si. A primeira apresenta criticamente diferentes apreensões sobre a técnica. A um fatalismo identificado, apesar de suas particularidades, no pensamento de Heidegger, Benjamin e Adorno é contraposto o pensamento de Gilbert Simondon. Recusando o hilemorfismo (que segrega forma e material), Simondon compreende a técnica como um artefato cultural que preserva em seu dinamismo gestos e pensamentos humanos. Ao ser aproximada dos processos criativos na música, tal perspectiva permite entrever uma relação menos conflituosa entre técnica e criação musical, compreendendo-se então a interação com as técnicas nesses contextos não mais a partir de um viés meramente utilitário ou instrumental, mas, antes, como um processo transdutivo de acoplagem entre expressões, gestos e pensamentos que emanam tanto do homem quanto da sua sedimentação no dinamismo dos mecanismos técnicos. Na segunda parte do trabalho é empreendida, a partir da exposição de determinadas técnicas e de suas utilizações em contextos musicais, uma mecanologia das técnicas musicais e sonoras e de práticas a elas relacionadas. Tal abordagem é realizada a partir do estudo de determinados objetos e mecanismos técnicos e a partir de uma interpretação das implicações dessas invenções em desenvolvimentos técnicos subsequentes assim como de sua apropriação e reinvenção em processos criativos específicos. A terceira parte do trabalho apresenta brevemente as composições realizadas durante o doutorado, cujas partituras foram incluídas aos apêndices do trabalho
Abstract: The thesis objective is to discuss the matter of technology in creative processes related to sound and musical practices by (1) undertaking a conceptual/theoretical inquiry; (2) by undertaking a mecanological approach of certain musical/sound technologies; (3) by presenting creative works produced during the doctorate studies. These three approaches are presented, respectively, in the three parts of the work - which are significantly independent from each other. The first section critically exposes different theoretical understandings of technology. Gilbert Simondon's outlook is counterposed to a sort of fatalism that may be perceived in the theoretical thought of Heidegger, Benjamin and Adorno, despite the very specific features of these philosophers' ideas. By refusing an hylomorphism (that segregates form and material), Simondon conceives technical things as a cultural artifacts which retain in their dynamism human gestures and thoughts. By relating these ideas to music and its creative processes, such a perspective allows us to glimpse a less quarrelsome relation between technology and musical creation, what allows us to understand the integration of technical things in these contexts not by an utilitarian and instrumental approach but rather as a transductive process of coupling between human expressions, gestures and thoughts and their sedimentation in the dynamic mechanisms of technical things. By exposing certain technologies and their use in musical contexts, the second part of the thesis enterprises what is here called a mecanology of musical/sound techniques and related practices. Such exposition comprises the study of certain technical mechanisms and an interpretation of such inventions including their subsequent technical developments as well as their appropriation and reinvention in specific creative processes. The third part of the work presents briefly compositions that were written during the doctorate studies. The scores of these compositions were included in the thesis' appendices
Doutorado
Processos Criativos
Doutor em Música