Relevant bibliographies by topics / Synthetic Geometries / Dissertations / Theses
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Dissertations / Theses on the topic 'Synthetic Geometries'

Author: Grafiati
Published: 7 July 2024
Last updated: 31 July 2025

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1

Le, Bars Arthur. "Surface characteristics scheme for the neutron transport equation in extruded and non-conformal 3D geometries." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP162.

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Le travail de la thèse se compose de deux parties. La première partie se focalise sur le développement d’un schéma (transport + accélération) aux caractéristiques linéaire surfacique pour la résolution de l’équation du transport sur des géométries 3D extrudées. À présent, seule l’approximation constante peut être utilisée. La différence entre les deux méthodes réside dans le fait que pour l’une la vitesse de convergence au maillage est linéaire (approximation constante) alors qu’elle est quadratique pour l’autre méthode (approximation surfacique linéaire). Pratiquement, la dernière méthode per
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Sciannandrone, Daniele. "Acceleration and higher order schemes of a characteristic solver for the solution of the neutron transport equation in 3D axial geometries." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112171/document.

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Le sujet de ce travail de thèse est l’application de la méthode de caractéristiques longues (MOC) pour résoudre l’équation du transport des neutrons pour des géométries à trois dimensions extrudées. Les avantages du MOC sont sa précision et son adaptabilité, le point faible était la quantité de ressources de calcul requises. Ce problème est même plus important pour des géométries à trois dimensions ou le nombre d’inconnues du problème est de l’ordre de la centaine de millions pour des calculs d’assemblage.La première partie de la recherche a été dédiée au développement des techniques optimisée
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Saccaro, Ludovica. "Vers l'évaluation du risque des anévrismes de l'aorte abdominale par modélisation géométrique et simulations hémodynamiques d'ordre réduit." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0025.

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Cette thèse se concentre sur une pathologie spécifique affectant la section abdominale de l'aorte, connue sous le nom d'anévrisme de l'aorte abdominale (AAA). Un anévrisme implique un affaiblissement persistant et localisé de la paroi du vaisseau, entraînant des élargissements et des renflements, provoquant une recirculation et une turbulence du flux sanguin.Notre thèse expose une méthodologie pour la modélisation géométrique des anévrismes abdominaux. Le processus comprend l'acquisition d'images de scanners CT, la reconstruction de la géométrie 3D de l'aorte et l'isolation de l'anévrisme. La
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Isgro, Francesco. "Geometric methods for video sequence analysis and applications." Thesis, Heriot-Watt University, 2001. http://hdl.handle.net/10399/495.

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Coulter, Stewart. "Representation of geometric constraints in parametric synthesis." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/17982.

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Bresolin, Nadia Roberta Quaini. "GEOMETRIA SINTÉTICA: INVESTIGAÇÃO SOBRE O USO DE UM SOFTWARE DE GEOMETRIA DINÂMICA COMO MEIO PARA DEMONSTRAÇÕES VISUAIS." Centro Universitário Franciscano, 2016. http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/594.

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Submitted by MARCIA ROVADOSCHI (marciar@unifra.br) on 2018-08-20T17:09:11Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_NadiaRobertaQuainiBresolin.pdf: 2962274 bytes, checksum: 08e27819aea17dfb2d8c955d8761f265 (MD5)<br>Made available in DSpace on 2018-08-20T17:09:11Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_NadiaRobertaQuainiBresolin.pdf: 2962274 bytes, checksum: 08e27819aea17dfb2d8c955d8761f265 (MD5) Previous issue date: 2016-11-30<br>This research aimed to invest
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Duersch, Michael Israel. "Backprojection for Synthetic Aperture Radar." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/4060.

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Synthetic aperture radar (SAR) is a type of radar capable of high-resolution coherent imaging. In order to produce coherent imagery from raw SAR data, an image formation algorithm is employed. The various image formation algorithms have strengths and weaknesses. As this work shows, time-domain backprojection is one algorithm whose strengths are particularly well-suited to use at low-altitudes. This work presents novel research in three areas regarding time-domain backprojection. The first key contribution of this work is a detailed analysis of SAR time-domain backprojection. The work derives a
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Morelli, Alessandra. "Synthesis of metal based interlocked architectures : spanning through oxidation states, geometries and coordination motifs." Thesis, University of Edinburgh, 2004. http://hdl.handle.net/1842/12685.

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Efficient synthetic methods have been developed for catenates and rotaxanes based on tetrahedral and trigonal bipyrimidal metal complexes using the metal-<i>bis-</i>phenanthroline synthon pioneered in Strasbourg. The aim of this project was to investigate the possibility to synthesise mechanically interlocked architecture using metals with higher oxidation states, different geometries and higher coordination motifs. Chapter Two describes the synthesis of a general ligand system for rotaxane complexes of ions that prefer octahedral coordination – the commonest ligand geometry amongst transition
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Ciobotarescu, Simona. "Synthesis, molecular modeling and photochromic behaviour of polysiloxanes containing azo-groups with different geometries." Thesis, Angers, 2020. http://bu.univ-angers.fr/Contact.

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La présente thèse représente une étude complexe des azopolysiloxanes photosensibles et rejoint les techniques théoriques et expérimentales. Le thème tourne autour du phénomène de transport de masse des azopolymères induit par la photoisomérisation des azobenzènes. La conversion transt – cis de l'azobenzène et de ses dérivés est un processus réversible actionné par la lumière, qui permet le réarrangement de la matière environnante au niveau nano et micro. Cette propriété est exploitée pour fabriquer des réseaux de relief de surface (SRG) avec caractéristiques géométriques specifiques. Les prése
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Oliveira, Júnior José William de. "Três pontos de vista sobre cônicas." Mestrado Profissional em Matemática, 2018. http://ri.ufs.br/jspui/handle/riufs/9321.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>In the present work, we tried to investigate the conics in the synthetic, analytical and projective contexts, as well as to know some applications and properties of these curves. In the synthetic approach, it was emphasized a lithe of the historical aspects, the works made by Apollonius and Dandelin, a characterization for tangent and normal lines and re ecting properties. In the analytical approach, the Cartesian, polar and parametric equations were described, as well as the applications in the Kepler Laws. In the pr
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Mukesh, Jain Prakhyaa. "A Synthesis of Geometry and Light." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/101967.

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The poetics of an architecture of a moment is explored through design of a contemplative room (wherin the geometric transformation of a cubic base to a cone) demonstrates the rhythmn and proportion of the construction of the room and the relative motion of the sun in the space. The relationship of the sun rays on the walls of the room passing through a reflecting pool are shown using demonstrative and constructive means of descriptive geometry as both the design generator and poetic expression.The composition of the buildings reveals the play of light on form.<br>Master of Architecture<br>An e
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Lal, Mithun. "Synthetic environment for machine learning experiments." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/236035/2/Mithun%2BLal%2BThesis%282%29.pdf.

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This thesis addresses the problem of data scarcity in human deep-learning applications. Automated estimation of human shape and pose from an image is challenging. It is even more difficult to map the identified human pixels onto a 3D model. Existing deep-learning models learn to map manually labelled human pixels in 2D images onto human surface, which is prone to human error, and the sparsity of annotated data leads to sub-optimal results. We solve this problem by generating realistic artificial human video data to train 2D-3D human mapping models and show promising results when compared to mo
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Mercier, Patrick H. J. "Crystal chemistry of natural and synthetic trioctahedral micas: Exploring the limits of geometric crystal chemical models." Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/29032.

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Seventy-five synthetic powder trioctahedral mica samples (between Mg, Co, Ni, and Fe end members, with different degrees of oxidation, vacancy and Al/Si contents, and including an OH/F substitution series) were studied by room-temperature powder X-ray diffraction. The iron-bearing samples were studied by 57Fe Mossbauer spectroscopy. Subsets of the samples were also characterized by scanning electron microscopy combined with energy dispersive spectroscopy, optical microscopy, X-ray fluorescence spectroscopy, and gas chromatography. Lattice parameters (refined under the 1M stacking polytype, spa
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Allison, Morgan Charles. "Chemistry of Layered AB3Si2Sn7O16 Stannides." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/20154.

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The AB3Si2Sn7O16 phases (sg: P3 ̅m1) are a series of layered semiconductor oxides built from sheets of oxygen-linked A(SnO)6 octahedra and 3d transition metal rich tin-centred kagomé lattices separated by SiO4 tetrahedra. Oxide materials possessing novel geometrically frustrated architectures such as the triangular arrangement of ising spins in the kagomé lattice has garnered considerable recent interest from the materials science field due to the observation of quantum spin liquid states. These states are of interest to scientists, as they will help to connect the gap in understanding between
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Chen, Kuan-Hao. "Creating Extended Landau Levels of Large Degeneracy with Photons." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1542878428843845.

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Meng, Jian. "A geometric theory for synthesis, analysis and design of sub-6 DoF parallel manipulators /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?ECED%202007%20MENGJ.

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Zebin, Su. "DESIGN, SYNTHESIS, AND SELF-ASSEMBLY OF GIANT SHAPE AMPHIPHILES WITH PRECISELY CONTROLLED COMPOSITIONS, INTERACTIONS, AND GEOMETRIES VIA A MOLECULAR LEGO APPROACH." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1572887748730283.

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ANDRUSKI, STEPHEN WALTER. "I. GEOMETRIC EFFECTS IN SULFUR LONE-PAIR INTERACTIONS. II. SYNTHETIC USES OF SULFOXIMINES, SULFOXIDES AND HEMITHIOKETALS WITH STEREOCHEMICAL CONTROL." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184042.

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An X-ray crystal analysis of l,8-Bis(methylthio)naphthalene (1.1) revealed that the molecule has a geometry in which the naphthalene ring is twisted to place the 1,8- substituents symmetrically above and below the naphthalene plane. The methyl groups are rotated out of the naphthalene plane. X-ray crystal analysis of Naphtho [1, 8-b, c] -1, 5- dithiocin (1.2) showed that naphthalene ring is twisted as in 1.1, however the disposition of the sulfurs above and below the plane is unsymmetrical. The aliphatic portion of the molecule is in a chair-like conformation. Comparison of these two structure
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Robbeloth, Michael Christopher. "Recognition of Incomplete Objects based on Synthesis of Views Using a Geometric Based Local-Global Graphs." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1557509373174391.

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Shiping, Liu. "Synthetic notions of curvature and applications in graph theory." Doctoral thesis, Universitätsbibliothek Leipzig, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-102197.

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The interaction between the study of geometric and analytic aspects of Riemannian manifolds and that of graphs is a very amazing subject. The study of synthetic curvature notions on graphs adds new contributions to this topic. In this thesis, we mainly study two kinds of synthetic curvature notions: the Ollivier-Ricci cuvature on locally finite graphs and the combinatorial curvature on infinite semiplanar graphs. In the first part, we study the Ollivier-Ricci curvature. As known in Riemannian geometry, a lower Ricci curvature bound prevents geodesics from diverging too fast on average. We tra
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Beck, Joseph A. "Stochastic Mistuning Simulation of Integrally Bladed Rotors using Nominal and Non-Nominal Component Mode Synthesis Methods." Wright State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wright1278600105.

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Posser, Gracieli. "Dimensionamento de portas lógicas usando programação geométrica." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/29571.

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Neste trabalho é desenvolvida uma ferramenta de dimensionamento de portas lógicas para circuitos integrados, utilizando técnicas de otimização de problemas baseadas em Programação Geométrica (PG). Para dimensionar as portas lógicas de um circuito, primeiramente elas são modeladas usando o modelo de chaves RC e o atraso é calculado usando o modelo de Elmore, que produz funções posinomiais possibilitando a resolução do problema por programação geométrica. Para cada porta é utilizado um fator de escala que multiplica a largura dos seus transistores, onde as variáveis que representam os fatores de
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Tong, Yuxuan. "Four-bar Linkage Synthesis for a Combination of Motion and Path-point Generation." University of Dayton / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1366643444.

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Wang, Hongqing Vincent. "A Unit Cell Approach for Lightweight Structure and Compliant Mechanism." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7561.

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Cellular structures are present from the atomic level all the way up to patterns found in human skeleton. They are prevailing structures in the nature and known for their excellent mechanical, thermal, and acoustic properties. Two typical types of cellular structures, lightweight structures and compliant mechanisms, are investigated. Lightweight structures are rigid and designed to reduce weight, while increasing strength and stiffness. Compliant mechanisms are designed to transform motions and forces. Most available artificial lightweight structures are patterns of primitives. However, the pe
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Aimedee, Marie Fidèle. "Synthesis and Control of Reconfigurable mechanisms." Thesis, Clermont-Ferrand 2, 2015. http://www.theses.fr/2015CLF22641/document.

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Cette thèse aborde principalement trois grands aspects tels que la systématisation et l'analyse structurale, la modélisation géométrique et cinématique et les stratégies de contrôle. La première partie de la thèse est consacrée à l'élaboration d'une approche pour la systématisation des mécanismes reconfigurables selon leurs paramètres structuraux tels que la mobilité, la connectivité, la redondance et l’hyperstatisme. Ces paramètres nous permettent de comprendre les mécanismes et de les systématiser selon leur type de mouvement ; le mécanisme peut être isostatique ou hyperstatique, redondant o
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Bár, Filip. "Infinitesimal models of algebraic theories." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/267026.

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Smooth manifolds have been always understood intuitively as spaces that are infinitesimally linear at each point, and thus infinitesimally affine when forgetting about the base point. The aim of this thesis is to develop a general theory of infinitesimal models of algebraic theories that provides us with a formalisation of these notions, and which is in accordance with the intuition when applied in the context of Synthetic Differential Geometry. This allows us to study well-known geometric structures and concepts from the viewpoint of infinitesimal geometric algebra. Infinitesimal models of al
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Lehnen, Matheus Vicenzo. "Caracterização fluidodinâmica e térmica de jatos sintéticos." Universidade do Vale do Rio dos Sinos, 2012. http://www.repositorio.jesuita.org.br/handle/UNISINOS/4318.

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Submitted by Silvana Teresinha Dornelles Studzinski (sstudzinski) on 2015-07-08T14:34:31Z No. of bitstreams: 1 Matheus Vicenzo Lehnen.pdf: 7507080 bytes, checksum: 1036a30adcb3840ea0e5fcb545f29987 (MD5)<br>Made available in DSpace on 2015-07-08T14:34:31Z (GMT). No. of bitstreams: 1 Matheus Vicenzo Lehnen.pdf: 7507080 bytes, checksum: 1036a30adcb3840ea0e5fcb545f29987 (MD5) Previous issue date: 2012-05<br>Milton Valente<br>Nos dias atuais, os componentes eletrônicos estão cada vez mais potentes e com mais dispositivos integrados e há a necessidade de uma dissipação térmica mais eficiente.
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Van, Meter David S. III. "Synthesis and Characterization of Surface-Confined Ionic Liquid Stationary Phases for High Performance Liquid Chromatography." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1227275073.

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Beck, Joseph A. "Fundamental Understanding of Blisk Analytical Response." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1367848915.

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Antoine, Mathieu. "Les techniques algorithmiques du codage Octree appliquées à l'analyse de volumes tridimensionnels de données numériques." Grenoble 1, 1988. http://www.theses.fr/1988GRE10042.

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Les principales techniques d'exploitation des donnees numeriques sur ordinateur sont introduites. Une methodologie d'analyse par synthese d'image et ses differentes mises en oeuvre algorithmiques sont decrites. Dans une deuxieme partie, il est presente l'etude d'un codage particulier des donnees : le codage octree. Son adaptation a la manipulation de volumes numeriques est discutee
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Braschi, Cécilia. "Espaces construits : abstraction et synthèse des arts au Brésil, autour des revues d'André Bloc (1930-1960)." Thesis, Paris 1, 2019. http://www.theses.fr/2019PA01H036.

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Cette thèse étudie les revues d’art et d’architecture en tant que lieux de construction discursive et instruments privilégiés de circulation transnationale. Elle prend comme cas d’étude les relations entre les scènes française et brésilienne dans la période 1930-1960, portant une attention particulière aux transformations qui suivent la fin de la Seconde Guerre mondiale, à la fois dans la production artistique et critique, dans la représentation réciproque des deux contextes culturels et dans la négociation de leur place dans le nouvel ordre géopolitique. Largement diffusées en Amérique du Sud
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Bordairon, Marc. "Dimensionnement des massifs en sol renforcé par géosynthétiques." Grenoble INPG, 1986. http://www.theses.fr/1986INPG0113.

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Calcul des massifs de soutenement en terre renforcee par des nappes horizontales de geosynthetiques. Analyse detaillee d'une nouvelle "methode double blocs" et formalisee par une geometrie quelconque et des sollicitations diverses. Surface de glissement polygonale. Etude de l'influence de certains parametres (hauteur, sol, inclinaison du parement) sur le dimensionnement en vue de l'elaboration d'abaques de dimensionnement de massifs en sol renforce que l'on presente. Comparaison avec des methodes d'equilibre limite a surface de glissement circulaire. Resume des principales methodes traditionne
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Zamboj, Michal. "Syntetická projektivní geometrie." Doctoral thesis, 2018. http://www.nusl.cz/ntk/nusl-392456.

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A synthetic approach to the construction of projective geometry, its methods and selected results are given in the proposed thesis. The main historical drawbacks of the original proof of Chasles's theorem for non-developable ruled surfaces and von Staudt's formalization of projective geometry are commented. The corre- sponding theoretical background is elaborated on visual demonstrations with the accent to interrelations of classical synthetic, axiomatic and analytic points of view. Synthetic methods of projective geometry and their mixture with analytic methods are described on examples inclu
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Sung, Cheng-Lun, and 宋正倫. "Geometric Recursive Pattern Synthesis." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/762y2b.

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碩士<br>國立臺北科技大學<br>資訊工程系<br>106<br>This study propose a Geometric Recursive Pattern Synthesis system, using the Planetary Surround Model to draw closed symmetrical geometric patterns. The system is based on HTML and Javascript. Users can quickly generate all kinds of geometric recursive patterns by adjusting different parameters. Then arrange, combine, color the generated patterns to create a perfect pattern work with personal style. In addition to the pattern synthesis, the generating process of the Planetary Surround Model can also be understood through animation playback.
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AlMeraj, Zainab. "Synthesis and evaluation of geometric textures." Thesis, 2013. http://hdl.handle.net/10012/7872.

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Two-dimensional geometric textures are the geometric analogues of raster (pixel-based) textures and consist of planar distributions of discrete shapes with an inherent structure. These textures have many potential applications in art, computer graphics, and cartography. Synthesizing large textures by hand is generally a tedious task. In raster-based synthesis, many algorithms have been developed to limit the amount of manual effort required. These algorithms take in a small example as a reference and produce larger similar textures using a wide range of approaches. Recently, an increasing
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Zambanini, Robert A. "Computer-aided tolerance analysis and synthesis tolls for slot/slider geometries /." Diss., 2000. 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:9982880.

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Giansanti, Andrea. "Structural classification of proteins based on a synthetic geometric representation." Doctoral thesis, 2012. http://hdl.handle.net/11573/917613.

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Rauch, Rene. "G-SOMO : an oversampling approach based on self-organized map oversampling and geometric SMOTE." Master's thesis, 2019. http://hdl.handle.net/10362/63811.

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Dissertation presented as the partial requirement for obtaining a Master's degree in Data Science and Advanced Analytics<br>Traditional supervised machine learning classifiers are challenged to learn highly skewed data distributions as they are designed to expect classes to equally contribute to the minimization of the classifiers cost function. Moreover, the classifiers design expects equal misclassification costs, causing a bias for underrepresented classes. Thus, different strategies to handle the issue are proposed by researchers. The modification of the data set managed to establish
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Lin, Cheng-Yuan, and 林慶源. "Geometric Processing of Synthetic Aperture Radar Image Of Remotely Sensed Data." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/43295042889517684056.

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碩士<br>國立交通大學<br>控制工程系<br>84<br>Synthetic Aperture Radar (SAR) is an active microwave remote sensing systemregardless of the influence of weather and the time of detecting. It is a very important source of remote sensing data using SAR to acquire the high-resolution on imagery for general or military purposes. Due to the fact that the land changes rapidly and the cost is increased, the use of effective measuring techniques to survey the land has become more significant. This paper focuses on
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Heftler, Christopher Scott. "Kant’s analytic-geometric revolution : ostensive judgment as algebraic time–state relation in the Critique of pure reason." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-12-4950.

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In the Critique of Pure Reason, Kant defends the mathematically deterministic world of physics by arguing that its essential features arise necessarily from innate forms of intuition and rules of understanding through combinatory acts of imagination. Knowing is active: it constructs the unity of nature by combining appearances in certain mandatory ways. What is mandated is that sensible awareness provide objects that conform to the structure of ostensive judgment: “This (S) is P.” Sensibility alone provides no such objects, so the imagination compensates by combining passing point-data into “p
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Shiping, Liu. "Synthetic notions of curvature and applications in graph theory." Doctoral thesis, 2012. https://ul.qucosa.de/id/qucosa%3A11816.

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The interaction between the study of geometric and analytic aspects of Riemannian manifolds and that of graphs is a very amazing subject. The study of synthetic curvature notions on graphs adds new contributions to this topic. In this thesis, we mainly study two kinds of synthetic curvature notions: the Ollivier-Ricci cuvature on locally finite graphs and the combinatorial curvature on infinite semiplanar graphs. In the first part, we study the Ollivier-Ricci curvature. As known in Riemannian geometry, a lower Ricci curvature bound prevents geodesics from diverging too fast on average. We tra
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Kreslová, Iva. "Analytický a syntetický přístup k řešení metrických úloh v prostoru." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-404938.

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The diploma thesis deals with metric tasks in space, using synthetic and analytical geometry. In addition to explaining the different approaches, there is a set of examples to practice. The solution of the examples is part of the Portal of High School Mathematics (Portál středoškolské matematiky), where we can and analytical solutions, synthetic numerical solutions and synthetic constructional solutions.
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Bartlett, Malcolm Alan. "Synthesis and characterisation of novel oxovanadium(IV) Schiff base complexes: A study of their electronic spectral properties, peroxide binding affinities, DFT-calculated geometries and spectra, and cytotoxicity towards human carcinoma cells." Thesis, 2012. http://hdl.handle.net/10413/8894.

Full text
Abstract:
A series of five, tetradentate Schiff-base ligands were synthesised and chelated to vanadyl to form oxovanadium(IV) complexes. The ligands, 4,4’-{benzene-1,2-diylbis[nitrilo(1E)phen-1-yl-1ylidene]}- dibenzene-1,3-diol (H2L1), 4,4’-{ethane-1,2-diylbis[nitrilo(1E)phenyl-1-yl-1-ylidene]}dibenzene-1,3-diol (H2L2), 4,4’-{propane-1,2-diylbis[nitrilo(1E)phen-1-yl-1-ylidene]}dibenzene-1,3-diol (H2L3), 4,4’-{(2- hydroxypropane-1,3-diyl)bis[nitrilo(1E)phen-1-yl-1-ylidene]}dibenzene-1,3-diol (H2L4) and 4,4’-{2,2- dimethylpropane-1,3-diyl)bis-[nitrilo(1E)phen-1-yl-1-ylidene]}-dibenzene-1,3-diol (H2L5), ch
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