Relevant bibliographies by topics / Linear and non-linear geometries

Academic literature on the topic 'Linear and non-linear geometries'

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Published: 25 May 2024

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Journal articles on the topic "Linear and non-linear geometries"

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Cross, M. C. "Non-linear traveling wave states in finite geometries." Physica D: Nonlinear Phenomena 37, no. 1-3 (July 1989): 315–18. http://dx.doi.org/10.1016/0167-2789(89)90139-5.

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Pralle, Harm, and Johannes Ueberberg. "Linear geometries of Baer subspaces." Bulletin of the Belgian Mathematical Society - Simon Stevin 6, no. 4 (1999): 559–69. http://dx.doi.org/10.36045/bbms/1103055582.

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De Winter, S. "Linear representations of semipartial geometries." Bulletin of the Belgian Mathematical Society - Simon Stevin 12, no. 5 (January 2006): 767–80. http://dx.doi.org/10.36045/bbms/1136902614.

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Madore, J., T. Masson, and J. Mourad. "Linear connections on matrix geometries." Classical and Quantum Gravity 12, no. 6 (June 1, 1995): 1429–40. http://dx.doi.org/10.1088/0264-9381/12/6/009.

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Knapp, Wolfgang. "Linear closures of finite geometries." Journal of Geometry 107, no. 2 (March 4, 2016): 467–81. http://dx.doi.org/10.1007/s00022-016-0322-6.

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Wang, Xiao-Jun. "Non-linear corrections to aberration sensitivity of unstable-cavity geometries." Optics Express 16, no. 26 (December 9, 2008): 21223. http://dx.doi.org/10.1364/oe.16.021223.

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Komatsu, K. "Non-linear sloshing analysis of liquid in tanks with arbitrary geometries." International Journal of Non-Linear Mechanics 22, no. 3 (January 1987): 193–207. http://dx.doi.org/10.1016/0020-7462(87)90002-3.

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Tamilmani, Rajesh, and Emmanuel Stefanakis. "Enriched geometric simplification of linear features." GEOMATICA 71, no. 1 (March 2017): 3–19. http://dx.doi.org/10.5623/cig2017-101.

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Polyline geometries are used to represent linear features, such as roads, rivers and pipelines on maps. The generalization process results in a polyline that represents the feature either at a different resolution or different scale from the original geometries. In addition, the simplification process may result in losing the geometric properties associated with the intermediate points on the original geometries. These intermediate points can contain attributes or characteristics depending on the application domain. For example, points on the road network can contain information about accumulated length of the road, positional velocity, speed limit or accumulated gas consumption. This paper involves implementing the SELF (Semantically Enriched Line simpliFication) data structure to preserve the length attributes associated with individual points on actual linear features [Stefanakis 2015]. The number of points to be stored in the SELF structure is optimized by applying alternative compression techniques. The data structure has been implemented in PostgreSQL 9.4 [2014] with PostGIS [2016] extension using PL/pgSQL to support static and non-functional polylines. Extended experimental work has been carried out to better understand the impact of simplification on both synthetic and real (natural and artificial) linear features such as rivers and pipelines. The efficiency of SELF structure with regard to geo metric property preservation has been tested at various levels of simplification.
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Rodrigues, Vitor, Maria Costa, Etelvina Gomes, Dmitry Isakov, and Michael Belsley. "L-alaninium perrhenate: crystal structure and non-linear optical properties." Open Chemistry 12, no. 10 (October 1, 2014): 1016–22. http://dx.doi.org/10.2478/s11532-014-0548-9.

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AbstractThe crystal structure and non-linear optical properties of L-alaninium perrhenate, C3H8NO2+ ReO4 −, are reported. The protonated amino acid and the perrhenate anion have their usual geometries. The three-dimensional hydrogen-bonded network can be seen as a stacking of layers parallel to the (100) planes. Each layer is formed by chains of alternating positive and negative ions along the b and c axes. Hydrogen bonding of adjacent layers forms alternating chains along the a axis. A high damage threshold and a second-harmonic generation efficiency three times that of KDP make this new material potentially useful in non-linear optics.
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Usatenko, Zoryana, Piotr Kuterba, Hassan Chamati, and Dirk Romeis. "Linear and ring polymers in confined geometries." European Physical Journal Special Topics 226, no. 4 (April 2017): 651–65. http://dx.doi.org/10.1140/epjst/e2016-60335-0.

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Dissertations / Theses on the topic "Linear and non-linear geometries"

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Zhu, Xiangyang. "Investigation of Non-Linear Rheological Behaviors of Entangled Polymer Melts in Complex Geometries." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1346733189.

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Ferro, Dennis Eduardo Zavaleta [UNESP]. "Some geometric aspects of non-linear sigma models." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/151647.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
We review some relevant examples for String Theory of non-linear sigma models. These are bosonic strings propagating in curved background, the Wess-Zumino-Witten model and superstrings in flat and AdS superspace. The mathematical tools required for the study of these models (e.g. topological quantization, Cartan geometry, Lie superalgebras and geometry on coset spaces) are also described. Throughout the dissertation we have focused on classical aspects of these models such as the construction of the action and its symmetries where conditions for holomorphic symmetry of the bosonic string case were found.
Nesta dissertação estudamos alguns exemplos de modelos sigma não lineares em Teoria de cordas. Estes são a corda bosónica se propagando em espaços curvos, o modelo Wess-Zumino-Witten e supercordas em superespaço plano e AdS. As ferramentas matemáticas que se precisam para o estudo destes modelos (e.g. quantização topológica, geometria de Cartan, super-álgebras de Lie e geometria em espaços coset) também são descritas. Ao longo desta dissertação focamos os aspectos clássicos destes modelos tais como a construção da ação e suas simetrias onde condições para serem estas holomorficas no caso da corda bosónica foram achadas.
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Ferro, Dennis Eduardo Zavaleta. "Some geometric aspects of non-linear sigma models /." São Paulo, 2016. http://hdl.handle.net/11449/151647.

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Orientador: Andrei Mikhailov
Resumo: We review some relevant examples for String Theory of non-linear sigma models. These are bosonic strings propagating in curved background, the Wess-Zumino-Witten model and superstrings in flat and AdS superspace. The mathematical tools required for the study of these models (e.g. topological quantization, Cartan geometry, Lie superalgebras and geometry on coset spaces) are also described. Throughout the dissertation we have focused on classical aspects of these models such as the construction of the action and its symmetries where conditions for holomorphic symmetry of the bosonic string case were found.
Mestre
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Debaecker, Thibaud. "Geometric and bio-inspired analysis of non-linear image sensors." Paris 6, 2010. http://www.theses.fr/2010PA066717.

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Alors que l'image sous toutes ses formes s'est désormais imposée dans la vie quotidienne de chacun d'entre nous, les capteurs d'images sortant du classique modèle perspectif à point de vue unique se banalisent jusqu'à devenir les pièces maîtresses de nombreux produits de hautes technologies, à destination d'industries comme du grand public. Qu'ils soient bio-inspirés, se rapprochant des rétines artificielles ou à large champs de vue, grâce à des lentilles ou à des miroirs, l'utilisation des images acquises pas ces appareils nécessitent des modèles qui, jusqu'à présent, ont été construits comme des généralisations des modèles pré-existants et considèrent qu'un capteur d'images réalise un mapping d'un monde en trois dimensions vers une image plane, reliant chaque point de l'image par un rayon à son antécédent dans l'espace. Tous ces capteurs souffrent pourtant de résolutions variables telles, que l'approximation du champ de vue du pixel comme un rayon de lumière pose de réels problèmes dans leur utilisation. Cette thèse présente une triple approche pour la caractérisation de ces capteurs, la première inspirée de l'architecture biologique de la rétine, la seconde est un modèle générique de caméra utilisant les Algèbres Géométriques et une méthode qui en permet le calibrage, quelque soit le type de caméra employé, et la troisième montre que considérer ces ouvertures angulaires pour chaque pixel d'un point de vue projectif permet de retrouver certaines caractéristiques du capteur, de s'affranchir des distortions optiques, et enfin d'obtenir des images après remapping, correspondant à celles qui auraient été prises si le capteur avait été parfaitement perspectif
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Marrero, John Javier. "Resolution of linear entity and path geometries expressed via partially-geospatial natural language." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61251.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 100-102).
When conveying geospatial information via natural language, people typically combine implicit, commonsense knowledge with explicitly-stated information. Usually, much of this is contextual and relies on establishing locations by relating them to other locations mentioned earlier in the conversation. Because people and objects move through the world, a common and useful kind of geospatial phrase is the path expression, which is formed by designating multiple locations as landmarks on the path and relating those landmarks to one another in sequence. These phrases often include nongeospatial information, and the paths often include linear entities. This thesis builds upon the work done for the GeoCoder spatial reasoning system, by addressing several of its limitations and extending its functionality.
by John Javier Marrero.
M.Eng.
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Cocca, Leandro Henrique Zucolotto. "Efeitos fotofísicos em moléculas de Porfirina e Ftalocianina: uma relação entre geometrias e substituintes." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-21032018-141027/.

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Nos últimos anos, materiais orgânicos tem ganhado grande interesse em áreas que envolvem espectroscopia óptica não linear. Isso se dá devido aos materiais possuirem consideráveis efeitos ópticos não lineares, apresentarem facilidade de síntese e possuirem propriedades fotofísicas e fotoquímicas que os tornam capazes de serem empregados em um vasto número de possíveis aplicações. Entre os materiais orgânicos, é possível destacar as Porfirinas e Ftalocianinas. A síntese desses materiais possibilita um grande número de classes ou grupos distintos, os quais podem ser distinguidos por suas estruturas periféricas e/ou íons metálicos que podem ser inseridos no interior dos macrociclos. Isso resulta em alterações das suas propriedades ópticas, ou seja, através de alterações das estruturas químicas das Porfirinas e Ftalocianinas é possível modelar suas propriedades ópticas, e assim, de acordo com essas propriedades, discriminar em quais aplicações podem ser empregados. Tais materiais, tendo em vista suas propriedades fotofísicas, podem ser empregados como fotossensitizadores na terapia fotodinâmica, células solares, limitadores ópticos ou fotobactericidas entre outras mais. Sendo assim, nesta Dissertação de Mestrado é realizado uma caracterização espectroscópica linear e não linear desses materiais, para assim deterinar propriedades ópticas específicas que podem ser empregadas nas aplicações citadas. Para tal caracterização espectroscópica, foram empregadas técnicas de espectroscopia linear e não linear, dentre elas a técnica de Varredura-Z foi empregada em três configurações distintas (Varredura-Z por Pulso Único, por Trem de Pulsos e por Luz Branca Supercontínua) para determinação de absorções de estados excitados. Tempos de vida de fluorescência, tempos de decaimento radiativo e de conversão interna, seções de choque de absorção de estado singleto e tripleto (fundamental e excitado) e eficiências quânticas (fluorescência, conversão interna e converção para tripleto) foram os parâmetros determinados e, assim, através desses parâmetros, foi possível entender como alterações nas estruturas químicas (periféricas e íons metálicos) influenciam consideravelmente as propriedades de Porfirinas e Ftalocianinas.
In last years, organic materials have won great interest in areas involving non-linear optical spectroscopy. This is due to the fact that the materials have considerable non-linear optical effects, are easy to synthesize, and have photophysical and photochemical properties that make them capable of being used in a wide range of possible applications. Among the organic materials, it is possible to highlight Porphyrins and Phthalocyanines. The synthesis of these materials enables a large number of distinct classes or groups, which can be distinguished by their peripheral structures and / or metal ions that can be inserted into the macrocycles. It results in changes of its optical properties, that is, replacing the chemical structures of such Porphyrins and Phthalocyanines, it is possible to tune its optical properties, and thus, according to these properties, to discriminate in which applications they can be used. Such materials, in view of their photophysical properties, can be used as photosensitizers in photodynamic therapy, solar cells, optical limiters or photobactericides among others. Thus, in this Master\'s Dissertation, a linear and nonlinear spectroscopic characterization of these materials is carried out in order to determine specific optical properties that can be employed in the cited applications. For this spectroscopic characterization, linear and nonlinear spectroscopy techniques were employed, among them the Z-Scan technique was employed in three distinct configurations (Z-Scan by Single Pulse, by Pulse Train and by Supercontinuum White Light) for determination of absorptions of excited states. Fluorescence lifetimes, radiative decay and internal conversion times, single and triple triplet (fundamental and excited) and quantum efficiencies (fluorescence, internal conversion, and triplet formation) were the parameters determined, and with these parameters, it was possible to understand how changes in the chemical structures (peripheral and metallic ions) modify considerable the optical properties of Porphyrins and Phthalocyanines.
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RODRIGUES, LARA. "INFLUENCE OF INITIAL GEOMETRIC IMPERFECTIONS ON THE INTERNAL RESONANCES AND NON-LINEAR VIBRATIONS OF THIN-WALLED CYLINDRICAL SHELLS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35757@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
A análise das ressonâncias internas em sistemas estruturais contínuos é uma das principais áreas de pesquisa no campo da dinâmica não linear. A ressonância interna entre dois modos de vibração ocorre quando a proporção de suas frequências naturais é um número inteiro. De particular importância, devido à sua influência na resposta estrutural, é a ressonância interna 1:1, geralmente associada às simetrias do sistema, a ressonância interna 1:2, devida às não linearidades quadráticas e a ressonância 1:3 decorrente de não linearidades cúbicas. A ressonância interna permite a transferência de energia entre os modos de vibração relacionados, levando geralmente a novos fenômenos com profunda influência sobre a estabilidade da resposta dinâmica. As cascas de revolução geralmente exibem ressonâncias internas devido à inerente simetria circunferencial e um denso espectro de frequência em sua faixa de frequências mais baixas. Isso pode levar não apenas a ressonâncias internas do tipo m:n, mas a múltiplas ressonâncias internas. Nesta tese é realizada a análise de múltiplas ressonâncias internas em cascas cilíndricas delgadas, em particular as ressonâncias internas de 1:1:1:1 e 1:1:2:2 são investigadas em detalhes, um tópico pouco explorado na literatura técnica. A investigação de ressonâncias internas em sistemas contínuos geralmente é realizada usando modelos discretos de baixa dimensão. Embora alguns trabalhos anteriores tenham investigado ressonâncias internas do tipo m:n em cascas cilíndricas, muitos resultados não são consistentes, uma vez que os modelos discretos derivados não consideram os acoplamentos modais devido a não linearidades quadráticas e cúbicas. Aqui, usando um procedimento de perturbação, expansões modais consistentes são derivadas para um número arbitrário de modos de interação, levando a modelos de baixa dimensão confiáveis. A precisão desses modelos é corroborada usando o método Karhunen-Loève. Finalmente, é bem sabido que pequenas imperfeições geométricas da ordem da espessura da casca têm uma forte influência na sua resposta não linear. No entanto, sua influência nas ressonâncias internas, instabilidade dinâmica e transferência de energia é desconhecida. Assim, a influência de diferentes tipos de imperfeição modal é devidamente considerada na presente análise. Utilizando os modelos discretos aqui derivados, é apresentada uma análise detalhada das bifurcações, utilizando técnicas de continuação e o critério de estabilidade de Floquet, esclarecendo a importância das ressonâncias internas nas vibrações não lineares e instabilidades de cascas cilíndricas. Os resultados também confirmam que a forma e a magnitude das imperfeições geométricas iniciais têm uma influência profunda nos resultados, permitindo ou impedindo a transferência de energia entre os modos ressonantes considerados.
The analysis of internal resonances in continuous structural systems is one of the main research areas in the field of nonlinear dynamics. Internal resonance between two vibration modes occur when the ratio of their natural frequencies in an integer number. Of particular importance, due to its influence on the structural response, is the 1:1 internal resonance, usually associated with system symmetries, the 1:2 internal resonance, due to quadratic nonlinearities, and the 1:3 resonance arising from cubic nonlinearities. The internal resonance enables the energy transfer between the related vibration modes, leading usually to new phenomena with profound influence on the stability of the dynamic response. Shells of revolution usually exhibit internal resonances due to the inherent circumferential symmetry and a dense frequency spectrum in their lower frequency range. This may lead not only to m:n internal resonances, but also multiple internal resonances. In this thesis, the analysis of multiple internal resonances in slender cylindrical shells is conducted, in particular 1:1:1:1 and 1:1:2:2 internal resonances are investigated in detail, a topic rarely found in the technical literature. The investigation of internal resonances in continuous systems is usually conducted using low dimensional discrete models. Although some previous works have investigated m:n internal resonances in cylindrical shells, many results are not consistent since the derived discrete models do not consider the modal couplings due to quadratic and cubic nonlinearities. Here, using a perturbation procedure, consistent modal expansions are derived for an arbitrary number of interacting modes, leading to reliable low dimensional models. The accuracy of these models is corroborated using the Karhunen-Loève method. Finally, it is well known that small geometric imperfections of the order of the shell thickness has a strong influence on the shell nonlinear response. However, their influence on internal resonances, dynamic instability and energy transfer is largely unknown. Thus, the influence of different types of modal imperfection is properly considered in the present analysis. Using the derived discrete models, a detail bifurcation analysis, using continuation techniques and Floquet stability criterion, is presented, clarifying the importance of internal resonances on the nonlinear vibrations and instabilities of cylindrical shells. The results also confirm that the form and magnitude of initial geometric imperfections has a profound influence on the results enabling or preventing the energy transfer among the considered resonant modes.
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De, Saedeleer Julie. "The residually weakly primitive and locally two-transitive rank two geometries for the groups PSL(2, q)." Doctoral thesis, Universite Libre de Bruxelles, 2010. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210037.

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The main goal of this thesis is a contribution to the classification of all incidence geometries

of rank two on which some group PSL(2,q), q a prime power, acts flag-transitively.

Actually we require that the action be RWPRI (residually weakly primitive) and (2T)1

(doubly transitive on every residue of rank one). In fact our definition of RWPRI requires

the geometry to be firm (each residue of rank one has at least two elements) and RC

(residually connected).

The main goal is achieved in this thesis.

It is stated in our "Main Theorem". The proof of this theorem requires more than 60pages.

Quite surprisingly, our proof in the direction of the main goal uses essentially the classification

of all subgroups of PSL(2,q), a famous result provided in Dickson’s book "Linear groups: With an exposition of the Galois field theory", section 260, in which the group is called Linear Fractional Group LF(n, pn).

Our proof requires to work with all ordered pairs of subgroups up to conjugacy.

The restrictions such as RWPRI and (2T)1 allow for a complete analysis.

The geometries obtained in our "Main Theorem" are bipartite graphs; and also locally 2-arc-transitive

graphs in the sense of Giudici, Li and Cheryl Praeger. These graphs are interesting in their own right because of

the numerous connections they have with other fields of mathematics.
Doctorat en Sciences
info:eu-repo/semantics/nonPublished

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Carr, Andrew Newberry. "Geometric Extensions of Neural Processes." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/8394.

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Neural Processes (NPs) are a class of regression models that learn a map from a set of input-output pairs to a distribution over functions. NPs are computationally tractable and provide a number of benefits over traditional nonlinear regression models. Despite these benefits, there are two main domains where NPs fail. This thesis is focused on presenting extensions of the Neural Process to these two areas. The first of these is the extension of Neural Processes graph and network data which we call Graph Neural Processes (GNP). A Graph Neural Process is defined as a Neural Process that operates on graph data. It takes spectral information from the graph Laplacian as inputs and then outputs a distribution over values. We demonstrate Graph Neural Processes in edge value imputation and discuss benefits and drawbacks of the method for other application areas. The second extension of Neural Processes comes in the fundamental training mechanism. NPs are traditionally trained using maximum likelihood, a probabilistic technique. We show that there are desirable classes of problems where NPs fail to learn. We also show that this drawback is solved by using approximations of the Wasserstein distance. We give experimental justification for our method and demonstrate its performance. These Wasserstein Neural Processes (WNPs) maintain the benefits of traditional NPs while being able to approximate new classes of function mappings.
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Lindqvist, Björn. "Combined Control and Path Planning for a Micro Aerial Vehicle based on Non-linear MPC with Parametric Geometric Constraints." Thesis, Luleå tekniska universitet, Rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-76212.

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Using robots to navigate through un-mapped environments, specially man-made infrastructures, for the purpose of exploration or inspection is a topic that has gathered a lot of interest in the last years. Micro Aerial Vehicles (MAV's) have the mobility and agility to move quickly and access hard-to-reach areas where ground robots would fail, but using MAV's for that purpose comes with its own set of problems since any collision with the environment results in a crash. The control architecture used in a MAV for such a task needs to perform obstacle avoidance and on-line path-planning in an unknown environment with low computation times as to not lose stability. In this thesis a Non-linear Model Predictive Controller (NMPC) for obstacle avoidance and path-planning on an aerial platform will be established. Included are methods for constraining the available state-space, simulations of various obstacle avoidance scenarios for single and multiple MAVs and experimental validation of the proposed control architecture. The validity of the proposed approach is demonstrated through multiple experimental and simulation results. In these approaches, the positioning information of the obstacles and the MAV are provided by a motion-capture system. The thesis will conclude with the demonstration of an experimental validation of a centralized NMPC for collision avoidance of two MAV's.
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Books on the topic "Linear and non-linear geometries"

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Linear spaces with few lines. Berlin: New York, 1991.

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Gaven, Martin, ed. Geometric function theory and non-linear analysis. Oxford: Clarendon, 2001.

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Smith, Ralph C. A Galerkin method for linear PDE systems in circular geometries with structural acoustic applications. Hampton, VA: Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1994.

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Institute for Computer Applications in Science and Engineering., ed. A Galerkin method for linear PDE systems in circular geometries with structural acoustic applications. Hampton, VA: Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1994.

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Artin, Emil. Algèbre géométrique. Paris: Editions Jacques Gabay, 1996.

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Banchoff, Thomas. Linear algebra through geometry. 2nd ed. New York: Springer-Verlag, 1992.

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Woodford, Chris. Solving linear and non-linear equations. New York: Ellis Horwood, 1992.

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Woodford, Chris. Solving linear and non-linear equations. Chichester: Ellis Horwood, 1992.

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service), SpringerLink (Online, ed. Non-Linear Mechanics. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2011.

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Knauss, W. G., and A. J. Rosakis, eds. Non-Linear Fracture. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-017-2444-9.

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Book chapters on the topic "Linear and non-linear geometries"

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Buekenhout, Francis, and Arjeh M. Cohen. "Linear Geometries." In Diagram Geometry, 201–51. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-34453-4_5.

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Guelachvili, G., and N. Picqué. "Table 5. H2 16O (H16OH): Equilibrium geometries, rotational constants, and harmonic frequencies." In Non-linear Triatomic Molecules, 78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-47383-1_7.

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Guelachvili, G., and N. Picqué. "Table 4. H2 16O (H16OH): Calculated equilibrium geometries, rotational constants, and harmonic frequencies." In Non-linear Triatomic Molecules, 76–77. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-47383-1_6.

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Guelachvili, G., and N. Picqué. "Table 38. H2 16O (H16OH): Equilibrium geometries, harmonic and fundamental frequencies using various potentials." In Non-linear Triatomic Molecules, 129. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-47383-1_40.

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DeLuzio, Anthony James. "Geometric Non-linear Analysis." In Geometric Nonlinearity in Structural Behavior, 19–80. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-40508-2_4.

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Ganter, Bernhard, and Thomas Ihringer. "Varieties with linear subalgebra geometries." In Lecture Notes in Mathematics, 94–100. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/bfb0098457.

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Surowski, David B. "Symmetrical Maps Arising from Regular Coxeter Elements of Linear Groups." In Geometries and Groups, 535–42. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-4017-8_21.

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Bakas, I. "Conformal Algebras and Non-Linear Differential Equations." In Differential Geometric Methods in Theoretical Physics, 203–11. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-9148-7_21.

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Métivier, Guy, Jean-Luc Joly, and Jeffrey Rauch. "Recent Results in Non Linear Geometric Optics." In Hyperbolic Problems: Theory, Numerics, Applications, 723–36. Basel: Birkhäuser Basel, 1999. http://dx.doi.org/10.1007/978-3-0348-8724-3_23.

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Barbosa, J. T., A. M. Ferreira, J. César Sá, and A. T. Marques. "Geometric Non-Linear Analysis of Sandwich Structures." In Mechanics of Sandwich Structures, 191–98. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-015-9091-4_22.

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Conference papers on the topic "Linear and non-linear geometries"

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Steinbauer, R. "A geometric approach to full Colombeau algebras." In Linear and Non-Linear Theory of Generalized Functions and its Applications. Warsaw: Institute of Mathematics Polish Academy of Sciences, 2010. http://dx.doi.org/10.4064/bc88-0-21.

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Leow, A., Ming-Chang Chiang, H. Protas, P. Thompson, L. Vese, and H. S. C. Huang. "Linear and non-linear geometric object matching with implicit representation." In Proceedings of the 17th International Conference on Pattern Recognition, 2004. ICPR 2004. IEEE, 2004. http://dx.doi.org/10.1109/icpr.2004.1334627.

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DEMIR-KAVUK, OZGUR, FLORIAN KRULL, MYONG-HO CHAE, and ERNST-WALTER KNAPP. "PREDICTING PROTEIN COMPLEX GEOMETRIES WITH LINEAR SCORING FUNCTIONS." In Proceedings of the 10th Annual International Workshop on Bioinformatics and Systems Biology (IBSB 2010). IMPERIAL COLLEGE PRESS, 2010. http://dx.doi.org/10.1142/9781848166585_0002.

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Guarnera, Daniele, Erasmo Carrera, Ibrahim Kaleel, Alfonso Pagani, and Marco Petrolo. "Non-Linear Analysis of Bio-Structures Through Refined Beam Models." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86848.

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A novel approach for the analysis of the non-linear behavior of bio-structures is presented here. This method is developed in the framework of the Carrera Unified Formulation (CUF), a higher-order 1D theory according to which the kinematics of the problem depends on the arbitrary expansion of the generalized unknowns. Taylor-like (TE) and Lagrange-like expansion functions (LE) are employed to describe the kinematic field along the cross-section and, the finite element method (FEM) is used to formulate the governing equations. In this work, the effects of material nonlinearities are investigated and, the problem is solved by using the Newton-Raphson method. An atherosclerotic plaque of an artery is introduced as a typical bio-structure with complex geometry and studied for both linear and non-linear material cases. The results from the proposed technique highlight the accuracy of the in-plane and out-of-plane stress/strain distributions for different 1D models. The 3D-like accuracy of local effect predictions, the possibility of dealing with complex geometries, and low computational costs of nonlinear analyses make the present formulation appealing for biomechanical applications.
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Szeri, Andras Z. "Non-Linear Lubricant Behavior in Concentrated Contacts." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/fed-24919.

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Abstract Elastohydrodynamic lubrication (EHL) is the name given to hydrodynamic lubrication when it is applied to solid surfaces of low geometric conformity (counterformal contacts) that are capable of, and are subject to, elastic deformation. In bearings relying on EHL principles, the residence time of the fluid is less than 1 ms, the pressures are up to 4 GP, the film is thin, down to 0.1 μm, and shear rates are up to 108 s−1 — under such conditions lubricants exhibit material behavior that is distinctly different from their behavior in bulk at normal temperature and pressure. In fact, without taking into account the viscosity-pressure characteristics of the liquid lubricant and the elastic deformation of the bounding solids, hydrodynamic theory is unable to explain the existence of continuous lubricant films in highly loaded gears and rolling contact bearings.
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Berberich, Eric, Michael Hemmer, and Michael Kerber. "A generic algebraic kernel for non-linear geometric applications." In the 27th annual ACM symposium. New York, New York, USA: ACM Press, 2011. http://dx.doi.org/10.1145/1998196.1998224.

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Boston, Jonathan, Eric Swenson, Donald Kunz, Wenbin Yu, and Maxwell Blair. "Experiments with Geometric Non-Linear Coupling for Analytical Validation." In 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
18th AIAA/ASME/AHS Adaptive Structures Conference
12th. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2010. http://dx.doi.org/10.2514/6.2010-3018.

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Weber, Tobias W., Eike Lyczkowski, and Wolfgang Kiess. "Non-geometric correlated channel fading model with linear complexity." In 2023 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit). IEEE, 2023. http://dx.doi.org/10.1109/eucnc/6gsummit58263.2023.10188367.

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Patel, Sohel J., Steven L. Grant, Maciej Zawodniok, and Jacob Benesty. "On the Design of Optimal Linear Microphone Array Geometries." In 2018 16th International Workshop on Acoustic Signal Enhancement (IWAENC). IEEE, 2018. http://dx.doi.org/10.1109/iwaenc.2018.8521335.

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Kepple, Alan, Marwan Charrouf, David Rackiewicz, and Phillip Rush. "Non-Linear Analysis of Steam Generator U-Tube In-Plane Vibration." In ASME 2013 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/pvp2013-98163.

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Unexpected steam generator tube wear has recently been discovered during in-service inspection of newly installed PWR replacement steam generators. The extent of this unexpected tube wear suggests that a new wear mechanism is emerging that is not described by current tube wear models. A key to understanding the emerging unexpected tube wear may be to better understand the effectiveness of the mechanical design for tube support (flat bars with tight clearances) with respect to preventing flow induced tube vibration, and the characteristics of hydraulic forces exerted on tubes. This paper describes the results of a non-linear, dynamic, finite element analysis of steam generator tube in-plane vibration with typical flat bar mechanical supports. Mechanical support conditions such as initial gaps between tube and supports, contact forces between the tube and the supporting flat bars, and the effect of various forces applied to the tubes by fluid flow are investigated. The analysis describes the effect of these conditions on tube in-plane vibration frequency and damping for various tube forcing functions. Computational fluid dynamics calculations that determine the unsteady forces in two-phase flow test geometries are presented. A model describing the emerging unexpected tube wear is also introduced.
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Reports on the topic "Linear and non-linear geometries"

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Ramaswamy, R. V. Linear (Passive) and Non-Linear Guided and Studies in Glass. Fort Belvoir, VA: Defense Technical Information Center, July 1989. http://dx.doi.org/10.21236/ada211693.

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Cronin-Golomb, Mark, and Jed Khoury. Non-Linear Optical Signal Processing. Fort Belvoir, VA: Defense Technical Information Center, August 1995. http://dx.doi.org/10.21236/ada407564.

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Lenzner, Matthias, Wolfgang Rudolph, and Luke Emmert. Time-resolved non-linear nanoscopy. Office of Scientific and Technical Information (OSTI), December 2017. http://dx.doi.org/10.2172/1410980.

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Vledder, Gerbrant van. Non-Linear Four-Wave Interactions. Fort Belvoir, VA: Defense Technical Information Center, September 2012. http://dx.doi.org/10.21236/ada582094.

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Tukey, John W. Thinking about Non-Linear Smoothers. Fort Belvoir, VA: Defense Technical Information Center, May 1986. http://dx.doi.org/10.21236/ada172738.

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Marchese, Malvina. Advanced Non-Linear Regression Modelling. Instats Inc., 2023. http://dx.doi.org/10.61700/mrtlpflhp64q7469.

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This two-day seminar offers an in-depth introduction to non-linear regression models for cross sectional data, covering binary, multinomial, ordinal, censored, count, and the very popular quantile regression models. You will learn everything you need to know in order to understand and apply these methods in your own research. An official Instats certificate of completion is provided at the conclusion of the seminar. For European PhD students, the seminar offers 2 ECTS Equivalent point
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Marchese, Malvina. Advanced Non-Linear Regression Modelling. Instats Inc., 2023. http://dx.doi.org/10.61700/ovehw89kw8hwq469.

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This two-day seminar offers an in-depth introduction to non-linear regression models for cross sectional data, covering binary, multinomial, ordinal, censored, count, and the very popular quantile regression models. You will learn everything you need to know in order to understand and apply these methods in your own research. An official Instats certificate of completion is provided at the conclusion of the seminar. For European PhD students, the seminar offers 2 ECTS Equivalent point
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Le Bas, Pierre-Yves. Non-Linear Acoustics for Non-Destructive testing. Office of Scientific and Technical Information (OSTI), October 2019. http://dx.doi.org/10.2172/1569728.

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Ebeida, Mohamed, Ahmed Abdelkader, Nina Amenta, Drew Kouri, Ojas Parekh, Cynthia Phillips, and Nickolas Winovich. Novel Geometric Operations for Linear Programming. Office of Scientific and Technical Information (OSTI), November 2020. http://dx.doi.org/10.2172/1813669.

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Wu, J. C. Studies in Non-Linear Unsteady Aerodynamics. Fort Belvoir, VA: Defense Technical Information Center, October 1986. http://dx.doi.org/10.21236/ada177006.

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