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Готові списки джерел за темами / Intrinsic geometry / Дисертації

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Дисертації з теми "Intrinsic geometry"

Автор: Grafiati

Опубліковано: 10 березня 2023

Оновлено: 25 липня 2025

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1

Tavakkoli, Shahriar. "Shape design using intrinsic geometry." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/39421.

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2

Taft, Jefferson. "Intrinsic Geometric Flows on Manifolds of Revolution." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/194925.

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An intrinsic geometric flow is an evolution of a Riemannian metric by a two-tensor. An extrinsic geometric flow is an evolution of an immersion of a manifold into Euclidean space. An extrinsic flow induces an evolution of a metric because any immersed manifold inherits a Riemannian metric from Euclidean space. In this paper we discuss the inverse problem of specifying an evolution of a metric and then seeking an extrinsic geometric flow which induces the given metric evolution. We limit our discussion to the case of manifolds that are rotationally symmetric and embeddable with codimension

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3

Radvar-Esfahlan, Hassan. "Geometrical inspection of flexible parts using intrinsic geometry." Mémoire, École de technologie supérieure, 2010. http://espace.etsmtl.ca/657/1/RADVAR%2DESFAHLAN_Hassan.pdf.

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Le probleme du tolerancement des pieces mecaniques est decisif pour I'industrie de pointe. Ses incidences economiques sont importantes pour le secteur manufacturier qui subit des transformations profondes imposees par la globalisation des marches et revolution constante des technologies (CAO, CMM, 3D Scanner, etc.). U est admit aujourd'hui que I'optimisation des performances des produits requiert la prise en compte des variations inherentes aux processus de fabrication, d'ou le controle de la qualite a travers le processus de developpement et de fabrication. Dans le cas des composantes d

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4

Kynigos, Polychronis. "From intrinsic to non-intrinsic geometry : a study of children's understandings in Logo-based microworlds." Thesis, University College London (University of London), 1988. http://discovery.ucl.ac.uk/10020179/.

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The aim of the present study was to investigate the potential for children to use the turtle methaphor to develop understandings of intrinsic, euclidean and cartesian geometrical ideas. Four aspects of the problem were investigated. a) the nature of the schema children form when they identify with the turtle in order to change its state on the screen; b) whether it is possible for them to use the schema to gain insights into certain basic geometrical principles of the cartesian geometrical system; c) how they might use the schema to form understandings of euclidean geometry developed inductive

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5

Moghtasad-Azar, Khosro. "Surface deformation analysis of dense GPS networks based on intrinsic geometry : deterministic and stochastic aspects." kostenfrei, 2007. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-33534.

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6

Sun, Jie. "Intrinsic geometry in screw algebra and derivative Jacobian and their uses in the metamorphic hand." Thesis, King's College London (University of London), 2017. https://kclpure.kcl.ac.uk/portal/en/theses/intrinsic-geometry-in-screw-algebra-and-derivative-jacobian-and-their-uses-in-the-metamorphic-hand(8ccd2b47-de45-488f-af5d-634343746b57).html.

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Line geometry is a foundation of screw algebra in line coordinates that were created by Plücker as ray coordinates taking a line as a ray between two points and axis coordinates taking a line as the intersection of two planes. This Thesis reveals the geometrical meaning and intrinsic relationship between these ray coordinates and axis coordinates, leading to an in-depth understanding of conformability and duality of these two sets of screw coordinates, and their related vector space and dual vector space. Based on the study of screw algebra, the resultant twist of a serial manipulator is prese

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7

Richard, Laurence. "Towards a Definition of Intrinsic Axes: The Effect of Orthogonality and Symmetry on the Preferred Direction of Spatial Memory." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1310492651.

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8

Ahmad, Ola. "Stochastic representation and analysis of rough surface topography by random fields and integral geometry - Application to the UHMWPE cup involved in total hip arthroplasty." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 2013. http://tel.archives-ouvertes.fr/tel-00905519.

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Surface topography is, generally, composed of many length scales starting from its physical geometry, to its microscopic or atomic scales known by roughness. The spatial and geometrical evolution of the roughness topography of engineering surfaces avail comprehensive understanding, and interpretation of many physical and engineering problems such as friction, and wear mechanisms during the mechanical contact between adjoined surfaces. Obviously, the topography of rough surfaces is of random nature. It is composed of irregular hills/valleys being spatially correlated. The relation between their

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9

Spencer, Benjamin. "On-line C-arm intrinsic calibration by means of an accurate method of line detection using the radon transform." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAS044/document.

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Les ``C-arm'' sont des systémes de radiologie interventionnelle fréquemment utilisés en salle d'opération ou au lit du patient. Des images 3D des structures anatomiques internes peuvent être calculées à partir de multiples radiographies acquises sur un ``C-arm mobile'' et isocentrique décrivant une trajectoire généralement circulaire autour du patient. Pour cela, la géométrie conique d'acquisition de chaque radiographie doit être précisément connue. Malheureusement, les C-arm se déforment en général au cours de la trajectoire. De plus leur motorisation engendre des oscillations non reproductib

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10

Cotsakis, Ryan. "Sur la géométrie des ensembles d'excursion : garanties théoriques et computationnelles." Electronic Thesis or Diss., Université Côte d'Azur, 2024. http://www.theses.fr/2024COAZ5007.

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L'ensemble d'excursion EX(u) d'un champ aléatoire réel X sur R^d à un niveau de seuil u ∈ R est le sous-ensemble du domaine R^d où X dépasse u. Ainsi, l'ensemble d'excursion est aléatoire, et sa distribution à un niveau fixe u est déterminée par la distribution de X. Étant des sous-ensembles de R^d, les ensembles d'excursions peuvent être étudiés en termes de leurs propriétés géométriques comme moyen d'obtenir des informations partielles sur les propriétés de distribution des champs aléatoires sous-jacents.Cette thèse examine :(a) comment les mesures géométriques d'un ensemble d'excursion peuv

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11

Šolony, Marek. "Lokalizace objektů v prostoru." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2009. http://www.nusl.cz/ntk/nusl-236626.

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Virtual reality systems are nowadays common part of many research institutes due to its low cost and effective visualization of data. They mostly allow visualization and exploration of virtual worlds, but many lack user interaction. In this paper we suggest multi-camera optical system, which allows effective user interaction, thereby increasing immersion of virtual system. This paper describes the calibration process of multiple cameras using point correspondences.

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12

Kirch, Nienkotter Rocha Bruna. "Intrinsic variations in geometric properties of nonlinear equivalent strut models for infill-RC frames." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2019. https://ro.ecu.edu.au/theses/2187.

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Reinforced concrete frames infilled with unreinforced masonry are commonly used in structures worldwide. The interaction between the frame and the infill panel is usually ignored in engineering practice, and the masonry infill is not considered as a structural element. However, observations made after the occurrence of strong earthquakes have shown that the bare frame and infill-frame behave differently when subjected to in-plane lateral loads. Extensive research has been conducted on the behaviour of infill-frames when laterally loaded. This research focuses on the analysis of infill-frames u

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13

Fukuoka, Ryuichi. "Hipersuperficies no espaço euclidiano com condições sobre a geometria intrinseca." [s.n.], 1999. http://repositorio.unicamp.br/jspui/handle/REPOSIP/307102.

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Orientador: Francesco Mercuri<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Matemática Estatistica e Computação Cientifica<br>Made available in DSpace on 2018-07-25T14:01:25Z (GMT). No. of bitstreams: 1 Fukuoka_Ryuichi_D.pdf: 1308191 bytes, checksum: 3ad050af4e0038f4d648de89ffcaf36b (MD5) Previous issue date: 1999<br>Resumo: A tese está dividida em duas partes: Parte 1: Hipersuperfícies conformemente planas com curvatura média constante. Seja Mn uma variedade riemanniana conformemente plana de dimensão n = 3 e f : Mn -IRn+1 uma hipersuperfície com curvatura média cons

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14

Paliard, Chloé. "Dimension reduction for fluid simulation and animation." Electronic Thesis or Diss., Institut polytechnique de Paris, 2024. http://www.theses.fr/2024IPPAT023.

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Анотація:

Malgré les améliorations considérables des performances du matériel graphique ainsi que les avancées algorithmiques majeures depuis le début des années 2000, certains phénomènes naturels restent extrêmement coûteux à simuler. Par exemple, plusieurs pistes ont été proposées pour améliorer les performances des simulations de fluides, qui sont animées par la résolution d'équations différentielles partielles (EDP), plus particulièrement les équations hautement non linéaires de Navier-Stokes. Dans cette thèse, nous explorons d'abord l'utilisation de l'apprentissage profond pour créer un espace rédu

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15

Anisi, David A. "Online trajectory planning and observer based control." Licentiate thesis, Stockholm : Optimization and systems theory, Royal Institute of Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4153.

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16

Anisi, David A. "On Cooperative Surveillance, Online Trajectory Planning and Observer Based Control." Doctoral thesis, KTH, Optimeringslära och systemteori, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9990.

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Анотація:

The main body of this thesis consists of six appended papers. In the first two, different cooperative surveillance problems are considered. The second two consider different aspects of the trajectory planning problem, while the last two deal with observer design for mobile robotic and Euler-Lagrange systems respectively.In Papers A and B, a combinatorial optimization based framework to cooperative surveillance missions using multiple Unmanned Ground Vehicles (UGVs) is proposed. In particular, Paper A considers the the Minimum Time UGV Surveillance Problem (MTUSP) while Paper B treats the C

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17

SIMONE, CIANI. "Intrinsic Harnack inequality for local weak solutions to an anisotropic parabolic equation." Doctoral thesis, 2022. http://hdl.handle.net/2158/1263325.

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Анотація:

We prove a Harnack inequality for non-negative solutions of a parabolic equation having an anisotropic slow diffusion. We study the propagation of support of solutions, through an iterative technique reminiscent of De Giorgi’s method and through the investigation of particular embeddings in anisotropic Sobolev spaces. At this point, we make an analysis of the natural scaling of the equation to reduce the problem to a Fokker-Planck equation and construct a self-similar Barenblatt solution thanks to finite speed of propagation. Then we exploit translation invariance to obtain positivity near

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18

Moghtasad-Azar, Khosro [Verfasser]. "Surface deformation analysis of dense GPS networks based on intrinsic geometry : deterministic and stochastic aspects / by Khosro Moghtasad-Azar." 2007. http://d-nb.info/986899356/34.

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19

Hong, Ngoc Binh. "Randomized integer convex hull." Doctoral thesis, 2021. https://repositorium.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-202102124020.

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The thesis deals with stochastic and algebraic aspects of the integer convex hull. In the first part, the intrinsic volumes of the randomized integer convex hull are investigated. In particular, we obtained an exact asymptotic order of the expected intrinsic volumes difference in a smooth convex body and a tight inequality for the expected mean width difference. In the algebraic part, an exact formula for the Bhattacharya function of complete primary monomial ideas in two variables is given. As a consequence, we derive an effective characterization for complete monomial ideals in two variables

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20

Little, Anna Victoria. "Estimating the Intrinsic Dimension of High-Dimensional Data Sets: A Multiscale, Geometric Approach." Diss., 2011. http://hdl.handle.net/10161/3863.

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<p>This work deals with the problem of estimating the intrinsic dimension of noisy, high-dimensional point clouds. A general class of sets which are locally well-approximated by <italic>k</italic> dimensional planes but which are embedded in a <italic>D</italic>>><italic>k</italic> dimensional Euclidean space are considered. Assuming one has samples from such a set, possibly corrupted by high-dimensional noise, if the data is linear the dimension can be recovered using PCA. However, when the data is non-linear, PCA fails, overestimating the intrinsic dimension. A multiscale version of PCA is t

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21

Aouada, Djamila. "Geometric, statistical, and topological modeling of intrinsic data manifolds application to 3D shapes /." 2009. http://www.lib.ncsu.edu/theses/available/etd-03232009-204551/unrestricted/etd.pdf.

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22

Ahmed, Aqeel [Verfasser]. "Development of a normal mode-based geometric simulation approach for investigating the intrinsic mobility of proteins / von Aqeel Ahmed." 2009. http://d-nb.info/999803816/34.

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23

WENG, YU-TING, and 翁鈺庭. "My Concepts and Practice on the Orchestral Work,"Skewb Diamond"-Transforming the Geometric Shapes to the Intrinsic Sounds of Music." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/9y3sq3.

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Анотація:

碩士<br>國立臺北藝術大學<br>音樂學系碩(博)士班<br>106<br>This thesis aims to illustrate the process and practice of transforming geometric shapes into the acoustic sound of music. In the first chapter, the relationships between graphics and music were discussed. This includes a probe into the question of “shape” in the visual arts and music, in particular the “shape” of the Chinese written characters. The connections between the Chinese calligraphy, the structure of the Chinese written characters, and music were explored in order to support my main thesis. Next chapter focuses on the spatiality of the acousti

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