Дисертації з теми "Linear concept"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-50 дисертацій для дослідження на тему "Linear concept".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Kaufmann, Stefan-Harald. "Does the parameter represent a fundamental concept of linear algebra?" Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-80339.
Повний текст джерелаDahl, Line J. C. Haakenaasen. "Octabuoy Concept and Spar Buoys: Non Linear Effects and Analysis." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18491.
Повний текст джерелаSlye, Jeffrey. "UNDERGRADUATE MATHEMATICS STUDENTS’ CONNECTIONS BETWEEN THEIR GROUP HOMOMORPHISM AND LINEAR TRANSFORMATION CONCEPT IMAGES." UKnowledge, 2019. https://uknowledge.uky.edu/math_etds/65.
Повний текст джерелаBlaze, Gina. "STIRLING CONVERTOR CONTROL FOR A LUNAR CONCEPT ROVER." Cleveland State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=csu1199806294.
Повний текст джерелаFontenele, Francisca ClÃudia Fernandes. "Fedathi sequence in teaching of linear algebra: the case of the concept of base of a vector space." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=11351.
Повний текст джерелаThis research examined the teaching of concept of base of a vector space according to the premises mediated by Fedathi Sequence during the discipline âIntroduction to Algebraâ in the course of Engineering of Teleinformatic at Federal University of CearÃ. The objective was to determine whether the use of Fedathi Sequence specifically in classes about the concept of base provides resources capable of becoming Meta Lever, allowing students an education based on the reflection on the worked contents. In this sense, the investigation was conducted in the form of case study, having as subject the teacher of discipline, which allowed the observation during his classes and planning, as well as having granted an interview. The results indicated that the Fedathi Sequence favored the use of resources that could become Meta Lever for students, being decisive in mediating the teacher, once the teacher behavior to use it in the classroom motivates students to reflection. We consider theories ML and FS, in this research, are complementary, and therefore we indicate that the teacher know such tools and their potential for use in teaching of concept of base, awakening the teacher an awareness of the role of mediation suggested by Fedathi Sequence.
Esta pesquisa analisou o ensino da noÃÃo de base de um espaÃo vetorial mediado segundo os pressupostos da SequÃncia Fedathi durante a disciplina de IntroduÃÃo à Ãlgebra do curso de Engenharia de TeleinformÃtica da Universidade Federal do CearÃ. Objetivou-se verificar se o uso da SequÃncia Fedathi, especificamente, nas aulas sobre o conceito de base, proporciona recursos passÃveis de se tornarem Alavanca Meta, permitindo aos alunos um ensino baseado na reflexÃo sobre os conteÃdos trabalhados. Nesse sentido, a investigaÃÃo foi conduzida na forma de estudo de caso, tendo como sujeito o professor da disciplina, que permitiu a observaÃÃo durante suas aulas e planejamentos, alÃm de ter concedido uma entrevista. Os resultados encontrados apontaram que a SequÃncia Fedathi favoreceu o uso de recursos passÃveis de se tornarem Alavancas Meta para os alunos, sendo determinante na mediaÃÃo do professor, de modo que a postura docente ao utilizÃ-la em sala de aula motivava os alunos à reflexÃo. Consideramos que as teorias AM e SF, nessa pesquisa, se complementaram, e, portanto, indicamos que o professor conheÃa tais ferramentas e seu potencial de uso no ensino de base, despertando no professor uma consciÃncia do papel da mediaÃÃo preconizada pela SequÃncia Fedathi.
Larsson, Petter, and Gustaf Rudbeck. "Wave Energy Concept Benchmarking." Thesis, KTH, Maskinkonstruktion (Inst.), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298841.
Повний текст джерелаThis report intends to examine the most common types of wave energy converter technologies to compare the different concepts' ability to absorb wave energy. Concepts being investigated are point absorbers and oscillating water columns (OWC). Calculations are made for the different concepts in the same wave conditions to be able to compare the energy that can be extracted. In the report, calculations are made under optimal wave conditions. The waves are assumed to be linear and the wave energy converter is assumed to be in phase with the oscillating motion of the wave. The wave data used is measured outside Belmullet in Ireland. Calculations are made on waves with a significant wave height of 1.25 m and a period time of 7.5 s. Calculations are also made on the largest measured wave present. In essence, power calculations are used according to a model developed by Kjell Budal and with the help of this be able to graphically and numerically compare the theoretical and actual maximum power that can be extracted from each scale. The results from the survey show that the largest contributing factor to high energy recovery is due to the volume of the buoy. The volume must be adapted to the wave conditions that exist where the buoy is to be placed.When calculating an OWC with a cross sectional area of 19 m2, it turns out that the power that can be extracted from an air chamber with an associated turbine is approximately 10 kW, 1/30 of the 300 kW that can be extracted by one point absorber. However, an OWC rarely consists of a single air chamber but often in a construction with several air chambers with separate turbines to increase the power.
Bergström, Patrik. "A Proof-of-Concept Implementation of a Non-linear Video Player for HTTP-based Adaptive Streaming." Thesis, Linköpings universitet, Databas och informationsteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-95446.
Повний текст джерелаVideo consumption on the Internet has been growing over the last decade and is expected to continue to increase. Video streaming is a widely used approach to viewing video on the Internet, which allows users to watch the video while it is being downloaded. Adaptive streaming is a video streaming technique that allows the player to change the downloading video’s bit rate depending on the user’s available bandwidth. Another approach to a more personal viewing experience is non-linear videos. These videos can be played in a non-sequential order. For example, a viewer can be given the choice of what ending to watch in a movie, or the path through an exhibition. This thesis will present the design and implementation of a novel structure for non-linear video. This structure is used by a video player for downloading and viewing an adaptive video intended for non-linear viewing, stored at some server. Media creators will also have an easier time to both visualize and create uniform video experiences. This thesis presents modifications to Adobe’s Open Source Media Framework and Strobe Media Playback which allow playing non-linear video. Presented in this thesis are the design and implementation details. Changes in the player include a user interface for non-linear media. The changes to the back-end include buffer management for parallel downloading and techniques to handle the new structure. Finally, this thesis presents proof-of-concept validation tests that show the functionality of the design and implementation. The thesis is concluded with a discussion of future work in this area.
Chyuan, Jong-pyng Michael. "A concept learning and teaching approach to the instruction of linear motion in introductory college physics /." The Ohio State University, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487687959968003.
Повний текст джерелаHardie, Harold Robert (Bob). "The documentary mind: In the subject of a practitioner’s perspective on changes in documentary concept and production." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2016. https://ro.ecu.edu.au/theses/1924.
Повний текст джерелаPettersson, Annika. "Grafisk och algebraisk representation : Gymnasieelevers förståelse av linjära funktioner." Licentiate thesis, Karlstads universitet, Institutionen för matematik och datavetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-41777.
Повний текст джерелаDenna licentiatuppsats behandlar gymnasieelevers förståelse av linjära funktioners algebraiska och grafiska representation. Delar av elevers begreppsbilder, kallade begreppselement, har studerats som en metod att fånga deras förståelse. Fyra aspekter påverkar den grafiska representationen av en linjär funktionens algebraiska representation . Dessa aspekter är: parametern k, parametern m, skalan på koordinatsystemets axlar och funktionens definitionsmängd. Studien är kvalitativ och består av två delstudier. I första delen arbetade tre par elever med uppgifter som rör parametrarna k och m. I andra delen intervjuades åtta elever om uppgifter som behandlar linjära funktioner med olika definitionsmängder. Båda delstudierna innehöll en uppgift som berör aspekten lutning i ett inhomogent koordinatsystem (ett system med olika skalor på axlarna). När skalan på x-axeln förändras är funktionens k-värde, så kallad analytisk lutning, konstant medan den visuella lutningen förändras. Studiens viktigaste resultat: 1) Elever visar svårigheter att särskilja analytisk och visuell lutning. 2) Ordet startvärde kan leda till konceptuella problem när synlig skärningspunkt på y-axeln saknas. 3) Eleverna visade i stort sett inte några begreppselement i relation till definitionsmängd.
Hong, Sang-Ki. "Development and proof-of-concept of an interactive visualization system for the spatiotemporal analysis of linear point data /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487944660933062.
Повний текст джерелаPorumamilla, Hemanth. "Modeling, analysis and non-linear control of a novel pneumatic semi-active vibration isolator a concept validation study /." [Ames, Iowa : Iowa State University], 2007.
Знайти повний текст джерелаChretien, Benoît. "Simulation of a new automotive concept based on a centralized approach for driver assistance system activation decision." Thesis, Evry-Val d'Essonne, 2012. http://www.theses.fr/2011EVRY0033.
Повний текст джерелаNowadays, to enhance traffic safety, more and more Advance Driver Assistance Systems (ADAS) are embedded in mass-production vehicles. Their increase renders development of vehicles more and more complex, especially to design Electronic and Electric (E/E) architecture, to synchronize the different embedded ADAS and decide which ADAS should be engaged. To cope with E/E architecture issues, my PhD thesis proposes a vehicle simulator, which is able to support architect designers. Then, to solve synchronization and decision problems, ADAS architecture has been chosen, according to the state of the art. Finally, a decision algorithm has been developed to optimise vehicle safety. To model the vehicle, a simulator emulates its plane motion according to embedded actuators acting on dynamic, like engine and brakes. Once the vehicle basis has been performed, I focus my work on ADAS. Because nowadays no generic solution exists to decide which ADAS to engage, last focus of my PhD has been the design of a decision method, optimizing vehicle safety. This latter couples a path-planning witch a Lyapunov invariant set, obtained through optimization problem constraints by bilinear matrix inequality. This strategy enables to assess embedded ADAS-functions and to warn the driver in critical situations. In order to illustrate this former, it has been illustrated with 2 longitudinal functions, a Adaptive Cruise Control and an Emergency Brake
Uzoukwu, E. Emeka. "Le Secteur pétrochimique dans le concept de développement global du Nigéria : les branches d'applications : polypropylene - linear alkyle benzene - carbon black." Paris, EHESS, 1990. http://www.theses.fr/1990EHES0018.
Повний текст джерелаThe petrochemical instrutory of nigeria that we propose to analyse poresents certain number of specificitises which indeed motivated our research. The apprehension of these principal specificities were observed by analysing the existence of a section of petrochemical industry in the context of general development of nigeria through the theory of "inductible industries" (industrie motrices). But at the same time our studies reveals through its analysis that the historical development of nigeria presents limits of pertinents condition of this theory. Withen petrochemical industry itself, the major concept of calculation * of linkage and induction effect show corresponding application. * on the level of general development of nigeria, the concept of "inductibility" or "linkage" industires meet lots of handicorp in its methodological application, in the sense that the other other concept of the theory : that of "triangulation" does not have its objective correspondance in the strategic planing, by nigerian decision makers. Thus nigeria did not opte for this concept as to it's development, not for the fact that it does not have a modern administrative society, nor was it for the fact it's decision. .
FONTENELE, Francisca Cláudia Fernandes. "A sequência fedathi no ensino da álgebra linear: o caso da noção de base de um espaço vetorial." www.teses.ufc.br, 2013. http://www.repositorio.ufc.br/handle/riufc/7521.
Повний текст джерелаSubmitted by Márcia Araújo (marcia_m_bezerra@yahoo.com.br) on 2014-02-27T12:29:38Z No. of bitstreams: 1 2013-DIS-FCFFONTENELE.pdf: 1685200 bytes, checksum: 501a01826fc849e7804e2c26150de5e8 (MD5)
Approved for entry into archive by Márcia Araújo(marcia_m_bezerra@yahoo.com.br) on 2014-02-27T14:08:13Z (GMT) No. of bitstreams: 1 2013-DIS-FCFFONTENELE.pdf: 1685200 bytes, checksum: 501a01826fc849e7804e2c26150de5e8 (MD5)
Made available in DSpace on 2014-02-27T14:08:13Z (GMT). No. of bitstreams: 1 2013-DIS-FCFFONTENELE.pdf: 1685200 bytes, checksum: 501a01826fc849e7804e2c26150de5e8 (MD5) Previous issue date: 2013
This research examined the teaching of concept of base of a vector space according to the premises mediated by Fedathi Sequence during the discipline “Introduction to Algebra” in the course of Engineering of Teleinformatic at Federal University of Ceará. The objective was to determine whether the use of Fedathi Sequence specifically in classes about the concept of base provides resources capable of becoming Meta Lever, allowing students an education based on the reflection on the worked contents. In this sense, the investigation was conducted in the form of case study, having as subject the teacher of discipline, which allowed the observation during his classes and planning, as well as having granted an interview. The results indicated that the Fedathi Sequence favored the use of resources that could become Meta Lever for students, being decisive in mediating the teacher, once the teacher behavior to use it in the classroom motivates students to reflection. We consider theories ML and FS, in this research, are complementary, and therefore we indicate that the teacher know such tools and their potential for use in teaching of concept of base, awakening the teacher an awareness of the role of mediation suggested by Fedathi Sequence.
Esta pesquisa analisou o ensino da noção de base de um espaço vetorial mediado segundo os pressupostos da Sequência Fedathi durante a disciplina de Introdução à Álgebra do curso de Engenharia de Teleinformática da Universidade Federal do Ceará. Objetivou-se verificar se o uso da Sequência Fedathi, especificamente, nas aulas sobre o conceito de base, proporciona recursos passíveis de se tornarem Alavanca Meta, permitindo aos alunos um ensino baseado na reflexão sobre os conteúdos trabalhados. Nesse sentido, a investigação foi conduzida na forma de estudo de caso, tendo como sujeito o professor da disciplina, que permitiu a observação durante suas aulas e planejamentos, além de ter concedido uma entrevista. Os resultados encontrados apontaram que a Sequência Fedathi favoreceu o uso de recursos passíveis de se tornarem Alavancas Meta para os alunos, sendo determinante na mediação do professor, de modo que a postura docente ao utilizá-la em sala de aula motivava os alunos à reflexão. Consideramos que as teorias AM e SF, nessa pesquisa, se complementaram, e, portanto, indicamos que o professor conheça tais ferramentas e seu potencial de uso no ensino de base, despertando no professor uma consciência do papel da mediação preconizada pela Sequência Fedathi.
Finocchiaro, Thomas [Verfasser]. "Untersuchung eines Linearantriebkonzeptes für ein vollständig implantierbares Kunstherz : Investigation of a linear drive concept for a fully implantable total artificial heart / Thomas Finocchiaro." Aachen : Shaker, 2013. http://d-nb.info/1051575524/34.
Повний текст джерелаVentani, Alessia. "Generare con transformer lineare spiegazioni di concept set medicali costituiti da termini correlati estratti da social post di pazienti." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23059/.
Повний текст джерелаDonevska-Todorova, Ana. "Utilizing Technology to Facilitate the Transition from Secondary- to Tertiary Level Linear Algebra." Doctoral thesis, Humboldt-Universität zu Berlin, 2017. http://dx.doi.org/10.18452/18561.
Повний текст джерелаA common perception among researchers in mathematics education is that the transition between secondary- and tertiary level of mathematics may be problematic for the students. In particular, the exact and abstract nature of the theory of Linear algebra versus its arithmetic-geometric presentation in school appears to be difficult for the novice students. The application of properties for defining concepts at university in contrast to their usage for describing concepts in school points out a possible occurrence of obstacles for learning and discrepancies in procedural and conceptual understanding. The aim of this study is to examine how could upper-high school students develop a conceptual understanding based on concept definition and concept image in connection to multiple modes of description and thinking about concepts such as bi-linearity exemplified by the dot product of vectors and multi-linearity exemplified by determinants. In order to achieve this, I have created a specific teaching/ learning sequence in a dynamic geometry environment (DGE), then implemented it and evaluated it in a high school in Berlin, following a complete cycle of design-based research and conducting a multiple-level data analysis. The findings of the study show not only that widening students' concept images, developing multiple modes of thinking and gaining deeper conceptual understanding can successfully be mediated by dynamic geometries, but also give insights into an eventual theoretical model of how can they be further examined. Moreover, the study promotes authorized open-source interactive teaching/ learning materials for further sustainable practice and research. It opens new research questions about revisiting axiomatic approaches on local levels in upper high-school Linear algebra which may base on the integration of all three modes of description and thinking geometric, algebraic and abstract possibly facilitated by DGE.
Честа перцепција кај многумина истражувачи во областа на математичкото образование е дека транзицијата помеѓу средното и високото образование по математика може да биде проблематична за студентите. Егзакноста и апстрактноста на теоријата по Линеарна алгебра наспроти нејзината аритметичко-геометриска презентација во средното гимназиско образование се покажува како особено тешка за студентите. Примена на својствата на математичките поими за нивно дефинирање на универзитетско ниво наспроти нивното употреба за опишување на претходно дефинирани поими на училишно ниво, укажува на можна појава на тешкотии при нивното изучување и несовпаѓање на процедуралното и концептуалното разбирање на истите. Целта на оваа студија е да истражи како средношколците би можеле да развијат концептуално разбирање на поимите врз основа на концепт дефиниција и концепт слика во врска со мулти-моди на мислење, конкретно за поими како билинеарност, пр. скаларен производ на вектори, и мултилинеарност, пр. детерминанти. За да ја постигнам оваа цел, креирав наставна содржина поддржана од еден динамичен геометриски систем (ДГС) и следејќи целосен циклус на т.н. design-based research и спрoведувајќи мулти-анализа на податоци, истата ја имплементирав и евалуирав во едно средно училиште во Берлин. Резултатите од студијата укажуваат не само на фактот дека проширувањето на концепт сликите на учениците, развојот на мулти-моди на мислење и стекнувањето на длабоко концептуално разбирање на поимите можат да бидат успешно посредувани од ДГС туку овозможија и увид во еден теоретски модел за тоа коко тие можат понатаму да се истражуваат. Уште повеќе, студијата промовира авторизирани open-source интерактивни материјали за предавање и учење на содржините кои може да служат за понатамошни одржливи истражувања и развој. Студијата отвора нови истражувачки прашања за средношколската Линеарна алгебра која може да се базира на интеграција на сите три моди на мислење, геометриски, алгебарски и апстрактен, поддржан од ДГС.
Andary, Sébastien. "Contributions à la commande des systèmes mécaniques sous-actionnés : du concept à l'implémentation temps réel." Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20110/document.
Повний текст джерелаThis thesis is focused on non linear control of underactuated mechanical systems, thoses systems with less actuators than degrees of freedom. The internal dynamics of such system is often unstable making them particulary difficult to control. Thus specific care must be taken when designing controlers for such systems. The main contribution of this thesis is the design of two new control schemes for stable limit cycles generation on all coordinates of underactuated mechanical systems. First control approach is based on partial feedback linearization and reference trajectories optimization. Second approach is based on recent work on model free control,a control scheme which doesn't require prior mathematicalmodel of the controlled system dynamics. The proposed approaches are applied to an inertiawheel inverted pendulumtestbed. Several experimental scenarios are proposed, both in numerical simulation and in realtime implementation. Obtained results demonstrate the ability of both controllers to stabilize the system around stable limit cycles and to reject external disturbances
Ilgin, Gökay [Verfasser], Bernd [Akademischer Betreuer] Noche, and Thomas [Akademischer Betreuer] Steinhäuser. "Concept Development to Control Non-value Added Logistical Costs in a Primary Aluminium Casthouse by Interfacing Linear Optimization and Simulation / Gökay Ilgin. Gutachter: Thomas Steinhäuser. Betreuer: Bernd Noche." Duisburg, 2013. http://d-nb.info/1042373582/34.
Повний текст джерелаLi, Xiang [Verfasser], Heinz [Akademischer Betreuer] Konietzky, Heinz [Gutachter] Konietzky, Wulf [Gutachter] Schubert, and Guijun [Gutachter] Wang. "Lifetime prediction for rocks : a numerical concept based on linear elastic fracture mechanics, subcritical crack growth, and elasto-plastic stress redistributions / Xiang Li ; Gutachter: Heinz Konietzky, Wulf Schubert, Guijun Wang ; Betreuer: Heinz Konietzky." Freiberg : Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2013. http://d-nb.info/1220698814/34.
Повний текст джерелаSproule, Olive Elizabeth. "The development of concepts of linear and quadratic equations." Thesis, Queen's University Belfast, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314224.
Повний текст джерелаLachenal, Xavier. "Concepts for morphing composite structures using non-linear stiffness tailoring." Thesis, University of Bristol, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.601215.
Повний текст джерелаWang, Yanjun. "Production of γ-valerolactone from the hydrogenation of levulinic acid or alkyl levulinates : calorimetry and kinetic study Application of the concept of Linear Free Energy Relationships to the hydrogenation of levulinic acid and its corresponding esters Thermal risk assessment of levulinic acid hydrogenation to γ-valerolactone". Thesis, Normandie, 2020. http://www.theses.fr/2020NORMIR02.
Повний текст джерелаFossil energy plays a fondamental role in the economy, society and politics. Till now, different renewable energy are explored to be an alternative for energy supply, such as wind, solar, hydro and biomass energy. Among these renewable energy, biomass is regarded as the organic carbon source which can be applied for production of fuels, chemicals or materials. Among the bio-based chemicals, production of platform molecules such as levulinic acid (LA) and its esters is one of attractive way for biomass valorization. LA and its esters can be obtained through hydrolysis and alcoholysis of cellulose or hemicellulose. By further hydrogenation, γ-valerolactone (GVL) is produced and it is also regarded as a platform molecule for further upgrading to biofuels and chemicals with wide application. To scale-up the hydrogenation reaction and to find the optimum operating conditions towards safety and cost, the following questions must be answered : - What is the thermal risk of this reaction? ; - Which starting materials to choose (LA or esters)? ; - For a better energy integration of this process, how to measure the reaction enthalpies? Herein, at first, thermal risk assessment for hydrogenation of LA to GVL catalyzed by Ru/C in water was performed. A simplified kinetic model including energy balance under near-adiabatic conditions was developed to estimate the kinetic constants and thermal risk parameters of this reaction system. Through this thermal risk assessment, it was possible to know the safe operation conditions for this reaction system, i.e., preventing the risk of thermal runaway. Secondly, a structure-reactivity approach was carried out using the concept of Linear Free Energy Relationships (LFER). i.e., Taft equation. The Taft equation (LFER) was applied to hydrogenation of LA and its corresponding esters to GVL catalyzed over Ru/C. GVL was used as a solvent to allow the solubility of the different reactants, namely, LA, methyl levulinate (ML), ethyl levulinate (EL) and n-butyl levulinate (BL). It was demonstrated that the kinetics of the first step, i.e., hydrogenation of LA, ML, EL or BL to the corresponding intermediates and the kinetics of the second step, i.e., ring-closure follow Taft equation. The polar and steric effect of the substituents were evaluated, and it is shown that polar effect governs the kinetics of both reaction steps. Thirdly, the estimation of reaction enthalpies by calorimetry experiments was done. The estimation of such thermodynamic constants by using different thermodynamic models can be hazardous, because in this study GVL was used as a solvent and there are no data concerning the intermediates. Hydrogenation of methyl levulinate (ML) to GVL catalyzed over Ru/C was selected for this study. A method which links calorimetry measurement with composition analysis was developed to determine the reaction enthalpies of the overall reaction and two consecutive steps. It was found that the overall reaction enthalpy was -51.5 kJ/mol of GVL produced, which indicates that the reaction for production of GVL from ML is exothermic. The reaction enthalpy for the first hydrogenation step was calculated to be -58.66 kJ/mol of ML consumed, and for the reaction enthalpy for the second ring-closure step was calculated to be +7.16 kJ/mol of GVL produced
Broszat, Dominik. "Aircraft engine noise footprint reduction via a non-uniform inlet liner concept." kostenfrei, 2008. http://mediatum2.ub.tum.de/node?id=654812.
Повний текст джерелаGrande, André Lúcio. "O conceito de independência e dependência linear e os registros de representação semiótica nos livros didáticos de Álgebra Linear." Pontifícia Universidade Católica de São Paulo, 2006. https://tede2.pucsp.br/handle/handle/11123.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
This research aims to investigate which semiotic representation registers are most used in Linear Algebra textbooks in the presentation and study of the topic linear independence. The mathematics textbook is a resource much used by the teachers in its work. They present many representation registers, which can to be analyzed qualitatively to assess their potential contribution to the teaching-learning process. To this end, five Linear Algebra textbooks were selected for an analysis which involved the diagnosis of the representation registers used in the definition of linear independence, as well as the examples and exercises proposed for its study. The theory used in the analysis of these textbooks was Raymond Duval´s theory of Registers of Semiotic Representation, which highlights the importance of changes between registers in the learning of mathematical objects. In each textbooks, the registers present were classified and analyzed, along with the possible transformations of registers as carried out in the resolution of the examples and considered exercises. As result, scarcity of the use of some registers of representation it was evidenced in the chapters that approach the slight knowledge of independence and linear dependence, as for example, the geometric one to determine if a set of vectors is linearly independent or not, and the register of the natural language, in the resolution of examples and considered exercises that involve demonstrations. The analysis also indicated a lack of attention to conversions between registers in the examples and proposed exercises of analyzed textbooks
Esta pesquisa tem como objetivo investigar nos livros didáticos de Álgebra Linear quais são os registros de representação semiótica mais utilizados no estudo das noções e atividades propostas sobre independência linear. O livro didático é um recurso muito utilizado pelos professores no seu trabalho, o qual apresenta muitos registros de representação que podem ser analisados qualitativamente para a contribuição no processo de ensino-aprendizagem. Para isso, foram selecionados cinco livros didáticos de Álgebra Linear que se diagnosticou os registros de representação utilizados na definição, exemplos e exercícios propostos a respeito de independência linear. A teoria utilizada na análise dos livros didáticos foi a dos Registros de Representação Semiótica de Raymond Duval, que destaca a importância da mudança de registros na aprendizagem dos objetos matemáticos. Em cada obra, os registros foram classificados e analisados, bem como as possíveis transformações de registros realizadas na resolução dos exemplos e exercícios propostos. Como resultado, constatou-se nos capítulos que abordam as noções de independência e dependência linear uma escassez da utilização de alguns registros de representação, como por exemplo, o geométrico para determinar se um conjunto de vetores é linearmente independente ou não, e o registro da língua natural, na resolução de exemplos e exercícios propostos que envolvem demonstrações. Além disso, verificou-se a falta de conversão de registros nas definições, exemplos e exercícios propostos dos livros didáticos analisados
Kim, Jeonghoon. "Investigation of the Herschel-Quincke tube concept in a rectangular lined duct." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/46175.
Повний текст джерелаMaster of Science
Yost, Allison L. (Allison Lynne). "Fluid-filled helmet liner concept for protection against blast-induced traumatic brain injury." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74952.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 122-129).
Due to changes in modem warfare threats, as well as advances in body armor, soldier survivability in combat has increased, but blast-induced Traumatic Brain Injury (TBI) has become a prevalent injury in the battlefield. Often referred to as the "signature wound" of the current U.S. conflicts, blast-induced TBI is not a very well understood injury. In an effort to gain more insight on blast mechanisms and TBI, and to increase protection against this injury, our study investigates the development and exploration of a new Advanced Combat Helmet (ACH) liner for the modem day soldier. The key component of the liner explored in this work is the addition of channels within foam that contain fluid or fluid-like materials. To support this goal, this thesis explores the response of these filler materials in a 2D sandwich structure at a range of pressures believed to be in the range of the occurrence of mild TBI, the most common TBI diagnosis among soldiers. Filler materials explored in this work are glass beads and glycerin. Experiments were performed at Purdue University and the University of Nebraska at Lincoln, using two different shock tube setups to produce incident blast waves. Peak transmitted pressure was used to assess filler materials' blast mitigation abilities, and any nonlinear behavior was explored over the range of incident pressures tested. Results indicate a nonlinear effect in the mitigation of blasts by solid foam and glass beads. These materials respond linearly to applied pressures at 15, 30, and 45 psi, but digress from linear behavior at 60 psi applied pressure. It was also determined that there is a significant advantage to using sandwiches with glass beads compared to solid foam at 60 psi applied pressure, but at 15 psi, 30 psi, and 45 psi, there is no significant difference among all three materials explored.
by Allison L. Yost.
S.M.
Malik, Zeeshan. "Towards on-line domain-independent big data learning : novel theories and applications." Thesis, University of Stirling, 2015. http://hdl.handle.net/1893/22591.
Повний текст джерелаRonald, Kimberley Lee. "Evaluating rural-urban difference in environmental concern in Guyana using log-linear analysis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ30986.pdf.
Повний текст джерелаMatsumura, Yuya. "Four research topics on new acoustic liner concepts and modal propagation measurement." Cincinnati, Ohio : University of Cincinnati, 2008. http://rave.ohiolink.edu/etdc/view.cgi?acc_num=ucin1212076970.
Повний текст джерелаRossmanith, Gregor. "Concepts of non-linear data analysis applied to the search of non-Gaussianities in the CMB." Diss., lmu, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:19-138198.
Повний текст джерелаPeifer, Martin. "Concepts from non-linear dynamics and statistical physics applied to complex networks in the life sciences." [S.l. : s.n.], 2006.
Знайти повний текст джерелаAssis, Aline Mota de Mesquita. "ATIVIDADE DE ESTUDO DO CONCEITO DE TRANSFORMAÇÃO LINEAR NA PERSPECTIVA DA TEORIA DO ENSINO DESENVOLVIMENTAL DE V. V. DAVYDOV." Pontifícia Universidade Católica de Goiás, 2018. http://tede2.pucgoias.edu.br:8080/handle/tede/4059.
Повний текст джерелаMade available in DSpace on 2018-11-05T16:55:20Z (GMT). No. of bitstreams: 1 ALINE MOTA DE MESQUITA ASSIS.pdf: 6688952 bytes, checksum: 94c9e4c183a133d7dbafd52f7e741501 (MD5) Previous issue date: 2018-08-30
This work falls into the category of research into Theories of Education and Pedagogical Processes, and has as its main investigative focus, the teaching-learning process according to the algebraic concept of linear transformation, based on V.V. Davydov´s theory of developmental teaching. The question it seeks to clarify is : what are the repercussions for teaching the concept of linear transformation, based on the historical-cultural theory, in specific, Davydov's developmental theory, in the process of concept formation by students? Specifically, it aims to analyze the history of the logical development of the concept of linear transformation in order to grasp the relations present in it and the forms of mental movement displayed, towards identifying the mental actions to be contemplated in the planning and conduct of the activity of study; to carry out the study activity through the development of a didactic formation experiment to understand, in the course of the teaching-learning process of the concept of linear transformation, elements that indicate qualitative and quantitative changes in the development of student thinking. To this end research was carried out that consisted of a teaching experiment in a class of Linear Algebra at the Federal Institute of Education, Science and Technology of Goiás - Câmpus Goiânia, based on the assumptions of Davydov. This was completed with fourteen students of the Bachelor in Electrical Engineering graduate course and done so according to the structure of the study activity proposed by Davydov. The procedures for collecting the data were as follows: a written record of semistructured interviews with the teacher, socio-cultural questionnaires completed by the students, a diagnostic instrument for evaluation, an experimental teaching plan and the notes from non-participant direct observers. Data analysis focuses on the process of concept formation and the elements involved in this process from the following categories: transformation of task data into the identification of the general principle of the concept of linear transformation; from modeling to transformation of a model to the concept of linear transformation and the use of the concept of linear transformation as a mental tool. The results showed: the motivation of students during the experimental teaching; an understanding of algebraic concepts after logical-historical analysis by the majority of the research subjects; indicators of the zone of proximal development of the students in relation to the concepts of matrix, function and vector space - considered here as the prerequisites for the formation of the concept of linear transformation, developing the ability to think Mathematically according to the logic of this science; evidence of qualitative changes in the development of theoretical thinking of the research subjects, again, regarding the concept of linear transformation. The main contribution of this research was to show an alternative way of organizing the teaching of the concept of linear transformation, and consequently Linear Algebra. It is believed that even with the contradictions present in the curricular structure of the courses in the areas of the exact and world sciences and in engineering, as well as in the students' school formation, it is possible to carry out teaching based on the theory of developmental teaching and contribute to the theoretical thought formation in the majority of students.
Este trabalho, inscrito na linha de pesquisa Teorias da Educação e Processos Pedagógicos, tem como principal foco investigativo o processo de ensino-aprendizagem do conceito algébrico de transformação linear, fundamentando-se na teoria do ensino desenvolvimental de V. V. Davydov. A questão que se buscou esclarecer foi: que repercussões teriam, no processo de formação de conceitos pelos alunos, o ensino do conceito de transformação linear fundamentado na teoria histórico-cultural, em específico, na teoria do ensino desenvolvimental de Davydov? Especificamente, objetiva-se: analisar a história do desenvolvimento lógico do conceito de transformação linear a fim de apreender as relações nele presentes e o tipo de movimento mental que ele contém para identificar as ações mentais a serem contempladas no planejamento e na condução da atividade de estudo; proceder à realização da atividade de estudo mediante o desenvolvimento de um experimento didático formativo; apreender, no decorrer processo de ensino-aprendizagem do conceito de transformação linear, elementos que indicam mudanças qualitativas e quantitativas no desenvolvimento do pensamento do aluno. Para tanto, realizou-se uma pesquisa que consistiu em um experimento de ensino, baseado nos pressupostos de Davydov, em uma turma de Álgebra Linear do Instituto Federal de Educação, Ciência e Tecnologia de Goiás – Câmpus Goiânia, desenvolvido com quatorze alunos do curso de Bacharelado em Engenharia Elétrica e seguindo a estrutura da atividade de estudo proposta por Davydov. Os procedimentos para a coleta dos dados foram: roteiro de entrevista semiestruturada com o professor, questionário sociocultural dos alunos, instrumento de avaliação diagnóstica, plano de ensino experimental e roteiro de observação direta não participante. A análise dos dados enfoca o processo de formação de conceitos e os elementos intervenientes nesse processo a partir das seguintes categorias: transformação dos dados da tarefa na condução da identificação do princípio geral do conceito de transformação linear; da modelação à transformação de um modelo para o conceito de transformação linear e o uso do conceito de transformação linear como ferramenta mental. Os resultados obtidos revelaram: motivação dos alunos durante o ensino experimental; compreensão dos conceitos algébricos, após a análise lógico-histórica, pela maioria dos sujeitos da pesquisa; indícios de progresso da zona de desenvolvimento proximal dos alunos no que tange aos conceitos de matriz, função e espaço vetorial, considerados aqui como os pré-requisitos para a formação do conceito de transformação linear, desenvolvendo a capacidade de pensar a Matemática de acordo com a forma de pensar desta ciência; indícios de mudanças qualitativas no desenvolvimento do pensamento teórico dos sujeitos da pesquisa quanto ao conceito de transformação linear. A principal contribuição desta pesquisa consistiu em mostrar um caminho alternativo de organização do ensino do conceito de transformação linear, consequentemente, da Álgebra Linear. Acredita-se que, mesmo com as contradições presentes na estrutura curricular dos cursos das áreas de Ciências Exatas e da Terra e Engenharias, bem como na formação escolar dos alunos, é possível realizar um ensino embasado na teoria do ensino desenvolvimental e contribuir para a formação do pensamento teórico da maioria dos alunos
Rossini, Giacomo. "Sviluppo di un concept per il debottlenecking di una linea produttiva di un intermedio di produzione." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
Знайти повний текст джерелаGoel, Rahul S. M. Massachusetts Institute of Technology. "Study of an advanced helmet liner concept to reduce TBI : experiments & simulation using sandwich structures." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/62878.
Повний текст джерелаThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student submitted PDF version of thesis.
Includes bibliographical references (p. 123-130).
A large percentage of combat troops suffered Traumatic Brain Injuries (TBI) due to Improvised Explosive Devices (IEDs) in recent wars in the Middle East. The majority of TBIs were caused by exposure to blast waves. Use of advanced body armor has decreased the number of fatalities due to impacts after the explosions, increasing the number of observed non-fatal brain injuries from the blast waves. A large number of TBIs due to impact hits are also reported in skiers, bicyclists, football players etc. A new design concept for the helmet liners is being proposed that introduces solid or fluid filler material in channels inside the helmet liner. The main emphasis has been to improve the attenuation of incoming shock waves in the Army helmets; however, some impacts studies were also carried out for sports helmets. Directed blast experiments in collaboration with Purdue University and numerical studies using the ConWep module available in ABAQUS v6.10 are carried out. Fluid fillers are modeled using the coupled Eulerian-Lagrangian (CEL) functionality of ABAQUS. Preliminary results using flat plate sandwich structures with rectangular channels show that the use of high density filler material results in higher levels of blast mitigation. The peak transmitted overpressure is substantially reduced, while the duration of the positive pressure pulse and the rise time are increased leading to reduced pressure gradients. Fluid filler materials were also found to be promising. Viscosity was not found to be a potential mechanism for blast mitigation as hypothesized. No significant advantage of using circular or criss-cross channel geometries was observed. Prototypes of the first design of the helmet liner with channels have been fabricated, and their testing is under way. Development of a numerical model to observe the response to blast of the modified liner coupled with the Army's Advanced Combat Helmet (ACH) and a human head is also currently in progress. Experimental impact studies were carried out comparing POC ski helmets with standard ski helmets. Over multiple impacts, POC ski helmets showed substantially lower peak accelerations. Different filler materials in the sandwich structures were drop tested. Both the numerical model and the experiments showed higher impact attenuation by the use of viscous fluid in the sandwich structures subjected to drop tests.
by Rahul Goel.
S.M.
Hull, Lynette. "FRACTION MODELS THAT PROMOTE UNDERSTANDING FOR ELEMENTARY STUDENTS." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3127.
Повний текст джерелаM.A.
Department of Teaching and Learning Principles
Education
K-8 Mathematics and Science Education
Pinto-Guillaume, Ezequiel. "Beyond Linear Explanation : A theoretical study of definitions, concepts and discourses about the Sami people’s cultural heritage in Sweden." Thesis, Stockholms universitet, Institutionen för kultur och estetik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-121526.
Повний текст джерелаCosta, Fausto Guzzo da. "Employing nonlinear time series analysis tools with stable clustering algorithms for detecting concept drift on data streams." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-13112017-105506/.
Повний текст джерелаDiversos processos industriais, científicos e comerciais produzem sequências de observações continuamente, teoricamente infinitas, denominadas fluxos de dados. Pela análise das recorrências e das mudanças de comportamento desses fluxos, é possível obter informações sobre o fenômeno que os produziu. A inferência de modelos estáveis para tais fluxos é suportada pelo estudo das recorrências dos dados, enquanto é prejudicada pelas mudanças de comportamento. Essas mudanças são produzidas principalmente por influências externas ainda desconhecidas pelos modelos vigentes, tal como ocorre quando novas estratégias de investimento surgem na bolsa de valores, ou quando há intervenções humanas no clima, etc. No contexto de Aprendizado de Máquina (AM), várias pesquisas têm sido realizadas para investigar essas variações nos fluxos de dados, referidas como mudanças de conceito. Sua detecção permite que os modelos possam ser atualizados a fim de apurar a predição, a compreensão e, eventualmente, controlar as influências que governam o fluxo de dados em estudo. Nesse cenário, algoritmos supervisionados sofrem com a limitação para rotular os dados quando esses são gerados em alta frequência e grandes volumes, e algoritmos não supervisionados carecem de fundamentação teórica para prover garantias na detecção de mudanças. Além disso, algoritmos de ambos paradigmas não representam adequadamente as dependências temporais entre observações dos fluxos. Nesse contexto, esta tese de doutorado introduz uma nova metodologia para detectar mudanças de conceito, na qual duas deficiências de ambos paradigmas de AM são confrontados: i) a instabilidade envolvida na modelagem dos dados, e ii) a representação das dependências temporais. Essa metodologia é motivada pelo arcabouço teórico de Carlsson e Memoli, que provê uma propriedade de estabilidade para algoritmos de agrupamento hierárquico com relação à permutação dos dados. Para usufruir desse arcabouço, as observações são embutidas pelo teorema de imersão de Takens, transformando-as em independentes. Esses dados são então agrupados pelo algoritmo Single-Linkage Invariante à Permutação (PISL), o qual respeita a propriedade de estabilidade de Carlsson e Memoli. A partir dos dados de entrada, esse algoritmo gera dendrogramas (ou modelos), que são equivalentes a espaços ultramétricos. Modelos sucessivos são comparados pela distância de Gromov-Hausdorff a fim de detectar mudanças de conceito no fluxo. Como resultado, as divergências dos modelos são de fato associadas a mudanças nos dados. Experimentos foram realizados, um considerando mudanças abruptas e o outro mudanças graduais. Os resultados confirmam que a metodologia proposta é capaz de detectar mudanças de conceito, tanto abruptas quanto graduais, no entanto ela é mais adequada para cenários mais complicados. As contribuições principais desta tese são: i) o uso do teorema de imersão de Takens para transformar os dados de entrada em independentes; ii) a implementação do algoritmo PISL em combinação com a distância de Gromov-Hausdorff (chamado PISLGH); iii) a comparação da metodologia proposta com outras da literatura em diferentes cenários; e, finalmente, iv) a disponibilização de um pacote em R (chamado streamChaos) que provê tanto ferramentas para processar fluxos de dados não lineares quanto diversos algoritmos para detectar mudanças de conceito.
Rossmanith, Gregor [Verfasser], and Gregor [Akademischer Betreuer] Morfill. "Concepts of non-linear data analysis applied to the search of non-Gaussianities in the CMB / Gregor Rossmanith. Betreuer: Gregor Morfill." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2011. http://d-nb.info/1018847197/34.
Повний текст джерелаHalasz, Christopher. "Advanced Trailing Edge Blowing Concepts for Fan Noise Control: Experimental Validation." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/34040.
Повний текст джерелаMaster of Science
Castilho, Anderson Almeida [UNESP]. "Estudo do comportamento biomecânico em protocolos modificados de Branemark (conceito All-on-Four): análise por extensometria linear elétrica." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/105528.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
O objetivo deste estudo foi analisar in vitro, por meio de extensometria linear elétrica, o comportamento biomecânico em protocolos de Brånemark em mandíbulas, modificados pelo conceito All-on-Four, para que seja possível se estabelecer uma correlação entre tensão, deformação e eventos biomecânicos que possam acontecer no tecido ósseo peri-implantar referente a mudança do eixo de instalação de implantes posicionados próximos às extensões em cantlever. Para tanto, foram confeccionados dez modelos experimentais (G1, n=5) e (G2, n=5) homogêneos à base de poliuretano nos quais foram instalados quatro implantes de conexão externa e quatro pilares tipo micro-unit em duas configurações para os implantes distais. Para o efeito configuração (Configuração) no G1, os implantes foram instalados de forma axial e paralelos entre si. Para o efeito configuração no G2, os dois implantes distais foram instalados em angulação de 300 - sentido distal. O monitoramento das deformações foi obtido em 3 níveis de profundidade (NP) (cervical, médio e profundo) para cada implante, assim como em dois pontos de aplicação de carregamento estático de 50N (PAC) (ponto A em cantlever e ponto B em ponto mediano). Foram coletadas três leituras de microdeformação (ε) para cada extensômetro. Os dados coletados foram submetidos aos testes estatísticos ANOVA e Tukey (α=5%). Para as condições experimentais, os grupos após ensaio...
This study aimed to evaluate in vitro, the biomechanical behavior in Brånemark protocols modified by the All-on-Four concept, by strain gauge analysis, to establish a correlation between stress, strain and biological events that may occur in the peri-implant bone tissue in two diferent distaly implants configuration. Ten polyurethane experimental models were fabricated (Group 1, n = 5) and (Group 2, n = 5) which were installed four external hex implants and four micro-unit abutments, in two diferent tilting set-up for the distal implants. For the configuration effect in G1, the implants were installed axially and parallel to each other. In G2 group, the two distal implants were tilted 30 degrees. The microstrain data were obtained in 3 deep levels (NP) (cervical, medium and deep) via two linear strain gauges bonded on the mesial and distal surface for each implant. A static load of 50 N was applied on two points (PAC) (A - cantlever point and B - median point). Three microstrain measurements (με) were performed for each strain gauge. Data were analyzed by ANOVA and Tukey’s test for multiple comparisons at 5% level of significance. For the experimental conditions, the groups after testing showed mean ... (Complete abstract click electronic access below)
Castilho, Anderson Almeida. "Estudo do comportamento biomecânico em protocolos modificados de Branemark (conceito All-on-Four) : análise por extensometria linear elétrica /." São José dos Campos :, 2012. http://hdl.handle.net/11449/105528.
Повний текст джерелаBanca: Alberto Noryuki Kojima
Banca: Estevão Tomomitsu Kimpara
Banca: Alfredo Mikail Melo Mesquita
Banca: Marco Antonio Melloncini
Resumo: O objetivo deste estudo foi analisar in vitro, por meio de extensometria linear elétrica, o comportamento biomecânico em protocolos de Brånemark em mandíbulas, modificados pelo conceito All-on-Four, para que seja possível se estabelecer uma correlação entre tensão, deformação e eventos biomecânicos que possam acontecer no tecido ósseo peri-implantar referente a mudança do eixo de instalação de implantes posicionados próximos às extensões em cantlever. Para tanto, foram confeccionados dez modelos experimentais (G1, n=5) e (G2, n=5) homogêneos à base de poliuretano nos quais foram instalados quatro implantes de conexão externa e quatro pilares tipo micro-unit em duas configurações para os implantes distais. Para o efeito configuração (Configuração) no G1, os implantes foram instalados de forma axial e paralelos entre si. Para o efeito configuração no G2, os dois implantes distais foram instalados em angulação de 300 - sentido distal. O monitoramento das deformações foi obtido em 3 níveis de profundidade (NP) (cervical, médio e profundo) para cada implante, assim como em dois pontos de aplicação de carregamento estático de 50N (PAC) (ponto A em cantlever e ponto B em ponto mediano). Foram coletadas três leituras de microdeformação (ε) para cada extensômetro. Os dados coletados foram submetidos aos testes estatísticos ANOVA e Tukey (α=5%). Para as condições experimentais, os grupos após ensaio... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: This study aimed to evaluate in vitro, the biomechanical behavior in Brånemark protocols modified by the All-on-Four concept, by strain gauge analysis, to establish a correlation between stress, strain and biological events that may occur in the peri-implant bone tissue in two diferent distaly implants configuration. Ten polyurethane experimental models were fabricated (Group 1, n = 5) and (Group 2, n = 5) which were installed four external hex implants and four micro-unit abutments, in two diferent tilting set-up for the distal implants. For the configuration effect in G1, the implants were installed axially and parallel to each other. In G2 group, the two distal implants were tilted 30 degrees. The microstrain data were obtained in 3 deep levels (NP) (cervical, medium and deep) via two linear strain gauges bonded on the mesial and distal surface for each implant. A static load of 50 N was applied on two points (PAC) (A - cantlever point and B - median point). Three microstrain measurements (με) were performed for each strain gauge. Data were analyzed by ANOVA and Tukey's test for multiple comparisons at 5% level of significance. For the experimental conditions, the groups after testing showed mean ... (Complete abstract click electronic access below)
Doutor
Manfrim, Amanda Liz Pacífico. "O conceito de estabilizabilidade fraca para sistemas lineares com saltos Markovianos." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-13092006-153315/.
Повний текст джерелаThis work introduces weak controllability and weak stabilizability concepts for discretetime Markov jump linear system. We introduce a collection of matrices C that resembles controllability matrices of deterministic linear systems. The collection of matrices C allows us to define a weak controllability concept by requiring that the matrices are full rank, as well as to introduce a weak stabilizability concept that is a dual of the weak detectability concept found in the literature of Markov jump systems. An important feature of the introduced concept is that it generalizes the previous concept of mean square stabilizability. The role that the weak stabilizability concept plays in the filtering problem is investigated via case studies. These case studies are developed in the context of Kalman filtering with observation of the Markov parameter, they suggest that weak stabilizability together with mean square stabilizability ensure that the state estimator is mean square stable.
Duque, Gutiérrez María Paz. "Análise elastoplástica de estruturas metálicas usando o conceito de rótulas plásticas e o algoritmo de retorno radial." reponame:Repositório Institucional da UnB, 2014. http://repositorio.unb.br/handle/10482/16938.
Повний текст джерелаSubmitted by Ana Cristina Barbosa da Silva (annabds@hotmail.com) on 2014-11-17T18:27:55Z No. of bitstreams: 1 2014_MariaPazDuqueGutiérrez.pdf: 1529931 bytes, checksum: 45a09fa4d61bdf982f3a20ecc790f131 (MD5)
Approved for entry into archive by Guimaraes Jacqueline(jacqueline.guimaraes@bce.unb.br) on 2014-11-19T11:32:37Z (GMT) No. of bitstreams: 1 2014_MariaPazDuqueGutiérrez.pdf: 1529931 bytes, checksum: 45a09fa4d61bdf982f3a20ecc790f131 (MD5)
Made available in DSpace on 2014-11-19T11:32:37Z (GMT). No. of bitstreams: 1 2014_MariaPazDuqueGutiérrez.pdf: 1529931 bytes, checksum: 45a09fa4d61bdf982f3a20ecc790f131 (MD5)
O objetivo deste trabalho é o desenvolvimento e implementação de uma rotina de aplicação prática para uma análise elastoplástica de primeira ordem (pequenas deformações e pequenos deslocamentos), baseada nos conceitos de algoritmo de retorno radial, preditor/corretor e o conceito de rótulas plásticas. Espera-se obter uma ferramenta numérica precisa e computacionalmente econômica para a solução de diferentes tipos de estruturas metálicas. Para a análise limite, é utilizada uma superfície de escoamento assumida como uma função convexa e contínua das forças, agindo na seção transversal da estrutura. Para a solução das equações de equilíbrio, é utilizado um método iterativo baseado no método de Newton-Raphson combinado com o método de comprimento de arco. É introduzido o endurecimento isotrópico no regime plástico. As deformações plásticas são regidas pelo princípio da normalidade e são restritas aos extremos dos elementos. Os extremos dos elementos podem mudar bruscamente do estado elástico ao estado plástico. A matriz modular tangente consistente é determinada e aplicada sendo essencial para obter precisão e convergência. Finalmente, diferentes exemplos numéricos são estudados para avaliar a eficiência e aplicabilidade dos métodos empregados. ______________________________________________________________________________ ABSTRACT
The objective of this work is the development and implementation of a routine of practical application for a first order elastoplastic analysis (small strains and small displacements). Based on the concepts of radial return algorithm, predictor / corrector and the concept of plastic hinge. It is expected to obtain a numerical tool accurate and computationally economical for the solution of different metal structural typologies. For the limit analysis is used a yield surface assumed as a convex and continuous function of the forces acting at the cross section of the structure and therefore, for the solution of the equilibrium equations is used an iterative method based on the Newton-Raphson method combined whit the arc length method. Isotropic hardening in the plastic regime is introduced. The plastic deformations are governed by the principle of normality and are restricted to the extremes of the elements. The extremes of the elements can change abruptly from elastic to plastic state. Consistent modular tangent matrix is determined and applied since it is essential for the accuracy and convergence. Finally, different numerical examples are studied to evaluate the efficiency and applicability of the methods employed.
Torres, Leo Cecilia Antonia. "Aproximación al concepto de función lineal : el caso de una alumna invidente que cursa el segundo grado de secundaria." Master's thesis, Pontificia Universidad Católica del Perú, 2013. http://tesis.pucp.edu.pe/repositorio/handle/123456789/4742.
Повний текст джерелаTesis
Tonioni, Giulia. "analisi e ottimizzazione del processo di progettazione: il caso studio della linea Ninfea." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.
Знайти повний текст джерелаMerkle, Erich R. "Predicting urban elementary student success and passage on Ohio's high-stakes achievement measures using DIBELS Oral Reading Fluency and informal Math Concepts and Applications: An exploratory study employing hierarchical linear modeling." Kent State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=kent1285945471.
Повний текст джерелаLachaud, Fabrice. "La structure familiale des Craon du XIè siècle à 1415 : le concept lignager en question." Phd thesis, Université Michel de Montaigne - Bordeaux III, 2012. http://tel.archives-ouvertes.fr/tel-00724925.
Повний текст джерелаWollmann, Rafael Rodrigues Guimarães. "Uma abordagem de decomposição para o modelo matemático do plano mestre de produção que utiliza o conceito de Clearing function para estimar capacidade disponivel de utilização de recursos /Rafael Rodrigues Guimarães Wollmann ; orientador, Raimundo José Borges de Sampaio." reponame:Biblioteca Digital de Teses e Dissertações da PUC_PR, 2012. http://www.biblioteca.pucpr.br/tede/tde_busca/arquivo.php?codArquivo=2372.
Повний текст джерелаBibliografia: f. 57-58
As formulações de programação matemática que abordam problemas de planejamento de produção tem sido propostas desde 1950, e desde então apresentam uma constante evolução. O modelo matemático do problema de planejamento de produção de grande porte, por con
The mathematical programming formulations that address production planning problems have been proposed since 1950, and since then have a constant evolution. The mathematical production planning problem contains many functional constraints and it is in pra