Letteratura scientifica selezionata sul tema "Calcul fractal"
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Articoli di riviste sul tema "Calcul fractal":
ANTAR, Monia. "Autosimilarité et mémoire longue : Les rendements des indices boursiers tunisiens sont-ils chaotiques ?" Journal of Academic Finance 7, n. 2 (17 novembre 2016): 1–32. http://dx.doi.org/10.59051/joaf.v7i2.60.
Badariotti, Dominique. "Des fractales pour l’urbanisme?" Cahiers de géographie du Québec 49, n. 137 (9 marzo 2006): 133–56. http://dx.doi.org/10.7202/012297ar.
Rodríguez-Velásquez, Javier, Signed Prieto-Bohórquez, Catalina Correa-Herrera, Yolanda Soracipa-Muñoz, Ninfa Chaves-Torres, Álvaro Javier Narváez-Mejía, José Mojica- Madera, Mónica Aguilera-Rodríguez, Diego Tapia-Herrera e Jairo Jattin. "Comportamiento fractal de infecciones asociadas al cuidado de la salud en el Hospital de Meissen ESE II Nivel, para los años 2011, 2012 y 2013." Infectio 22, n. 2 (2 febbraio 2018): 70. http://dx.doi.org/10.22354/in.v22i2.711.
Rodríguez Velásquez, Javier, Signed Prieto, Ferando Polo, Catalina Correa, Yolanda Soracipa, Vanessa Blanco e Andrés Camilo Rodríguez. "Diagnóstico fractal y euclidiano de células de cuello uterino". Revista Repertorio de Medicina y Cirugía 23, n. 1 (1 marzo 2014): 47–55. http://dx.doi.org/10.31260/repertmedcir.v23.n1.2014.741.
Rodríguez Velásquez, Javier, Signed Prieto Bohórquez, Fernando Polo Nieto, Catalina Correa Herrera, Yolanda Soracipa Muñoz, Vanessa Blanco e Andrés Camilo Rodríguez. "Diferenciación geométrica fractal y euclidiana de arterias normales y reestenosadas. Armonía matemática arterial". Revista Repertorio de Medicina y Cirugía 23, n. 2 (1 giugno 2014): 139–44. http://dx.doi.org/10.31260/repertmedcir.v23.n2.2014.729.
Proença, Claudia Belmiro, Aura Conci e Solly A. Segenreich. "Investigação para detecção automática de falhas têxteis". Journal of the Brazilian Society of Mechanical Sciences 21, n. 3 (settembre 1999): 493–507. http://dx.doi.org/10.1590/s0100-73861999000300011.
Miranda Hamburger, Fabio. "Diseño de una antena fractal de 2400 MHz". Revista Tecnología en Marcha 25, n. 4 (11 dicembre 2012): 71. http://dx.doi.org/10.18845/tm.v25i4.621.
Rodríguez, Javier, Signed Prieto, Héctor Posso, Ricardo Cifuentes, Catalina Correa, Yolanda Soracipa, Fredy López, Laura Méndez, Hebert Bernal e Alejandro Salamanca. "Fractales: ayuda diagnóstica para células preneoplásicas y cancerígenas del epitelio escamoso cervical confirmación de aplicabilidad clínica". Revista Med 24, n. 1 (16 giugno 2016): 79–88. http://dx.doi.org/10.18359/rmed.2334.
Rodríguez Velásquez, Javier Oswado, Signed Prieto Bohórquez, Catalina Correa Herrera, Marcela Mejia, Benjamín Ospino, Ángela Munevar, Beatriz Amaya, Yurany Duarte, Sandra Medina e Carolina Felipe. "Simulación de estructuras eritrocitarias con base en la geometria fractal y euclidiana". Archivos de Medicina (Manizales) 14, n. 2 (20 novembre 2014): 276–84. http://dx.doi.org/10.30554/archmed.14.2.316.2014.
Forero, Germán, Javier Oswado Rodríguez Velásquez, Signed Prieto Bohórquez, Frank Pernett, Catalina Correa, Esmeralda Guzmán, Camila Sarmiento e Sergio Diaz. "Sistemas dinámicos aplicados a la dinámica cardiaca en 18 horas mediante una ley matemática exponencial". Archivos de Medicina (Manizales) 16, n. 2 (31 dicembre 2016): 335–44. http://dx.doi.org/10.30554/archmed.16.2.1775.2016.
Tesi sul tema "Calcul fractal":
Lamorlette, Aymeric. "Caractérisation macroscopique du milieu végétal pour les modèles physiques de feux de forêts". Thesis, Vandoeuvre-les-Nancy, INPL, 2008. http://www.theses.fr/2008INPL044N/document.
The macroscopic and gigascopic scale description of forest fires allows physical modelings of the propagation which can predict the fire evolution with a better accuracy than usually developed empirical Rothermel-like models. However, those models need fitting for their parameters which cannot be measured directly as the models equations are related to the equivalent media at the considered scale and not related to the air and the vegetal material. The equivalent media properties are related to the inner media properties, but the inner media properties knowledge does not allow directly the equivalent media properties knowledge. This work is then aiming on the vegetal medium reconstruction using fractal geometry. Geometrical parameters measurement methods used in forestry sciences are applied for the vegetal modeling validation. Numerical studies are finally done on the reconstructed structures to fit the relevant macroscopic scale parameters. Those studies also allow us to validate or invalidate the assumptions which have been done for the equivalent medium equation development. Those parameters are: the equivalent medium viscosity, the convective heat transfer coefficient and the extinction coefficient
Emmanuel, Aurélien. "Courbes d'accumulations des machines à signaux". Electronic Thesis or Diss., Orléans, 2023. http://www.theses.fr/2023ORLE1079.
This thesis studies a geometric computational model: signal machines. We show how to draw function graphs using-binary trees. In the world of cellular automata, we often consider particles or signals: structures that are periodic in time and space, that is, structures that move at constant speed. When several signals meet, a collision occurs, and the incoming signals can continue, disappear, or give rise to new signals, depending on the rules of the cellular automaton. Signal-machines are a computational model that takes these signals as basic building blocks. Visualized in a space-time diagram, with space on the horizontal axis and time running upwards, this model consists of calculating by drawing segments and half-lines. We draw segments upwards until two or more intersect, and then start new segments, according to predefined rules. Compared to cellular automata, signal-machines allow for the emergence of a new phenomenon: the density of signals can be arbitrarily large, even infinite, even when starting from a finite initial configuration. Such points in the space-time diagram, whose neighborhoods contain an infinity of signals, are called accumulation points.This new phenomenon allows us to define new problems geometrically. For example, what are the isolated accumulation points that can be achieved using rational initial positions and rational velocities? Can we make so the set of accumulation points is a segment? A Cantor set? In this thesis, we tackle the problem of characterizing the function graphs that can be drawn using an accumulation set. This work fits into the exploration of the computational power of signal-machines, which in turn fits into the study of the computational power of non-standard models. We show that the functions from a compact segment of the line of Real numbers whose graph coincides with the accumulation set of a signal machine are exactly the continuous functions. More generally, we show how signal machines can draw any lower semicontinuous function. We also study the question under computational constraints, with the following result: if a computable signal-machine diagram coincides with the graph of a Lipschitz-function of sufficiently small Lipschitz coefficient, then that function is the limit of a growing and computable sequence of rational step functions
Lausberg, Conrad. "Calcul numérique de la dimension fractale d'un attracteur étrange". Phd thesis, Grenoble INPG, 1987. http://tel.archives-ouvertes.fr/tel-00325041.
Lausberg, Conrad. "Calcul numérique de la dimension fractale d'un attracteur étrange". Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376070916.
Lausberg, Conrad Cosnard Michel Laurent Pierre Jean. "Calcul numérique de la dimension fractale d'un attracteur étrange". S.l. : Université Grenoble 1, 2008. http://tel.archives-ouvertes.fr/tel-00325041.
Bologna, Mauro. "The Dynamic Foundation of Fractal Operators". Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4235/.
Pegon, Paul. "Transport branché et structures fractales". Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS444/document.
This thesis is devoted to the study of branched transport, related variational problems and fractal structures that are likely to arise. The branched transport problem consists in connecting two measures of same mass through a network minimizing a certain cost, which in our study will be proportional to mLα in order to move a mass m over a distance L. Several continuous models have been proposed to formulate this problem, and we focus on the two main static models : the Lagrangian and the Eulerian ones, with an emphasis on the first one. After setting properly the bases for these models, we establish rigorously their equivalence using a Smirnov decomposition of vector measures whose divergence is a measure. Secondly, we study a shape optimization problem related to branched transport which consists in finding the sets of unit volume which are closest to the origin in the sense of branched transport. We prove existence of a solution, described as a sublevel set of the landscape function, now standard in branched transport. The Hölder regularity of the landscape function, obtained here without a priori hypotheses on the considered solution, allows us to obtain an upper bound on the Minkowski dimension of its boundary, which is non-integer and which we conjecture to be its exact dimension. Numerical simulations, based on a variational approximation a la Modica-Mortola of the branched transport functional, have been made to support this conjecture. The last part of the thesis focuses on the landscape function, which is essential to the study of variational problems involving branched transport as it appears as a first variation of the irrigation cost. The goal is to extend its definition and fundamental properties to the case of an extended source, which we achieve in the case of networks with finite root systems, for instance if the measures have disjoint supports. We give a satisfying definition of the landscape function in that case, which satisfies the first variation property and we prove its Hölder regularity under reasonable assumptions on the measures we want to connect
Senot, Maxime. "Modèle géométrique de calcul : fractales et barrières de complexité". Phd thesis, Université d'Orléans, 2013. http://tel.archives-ouvertes.fr/tel-00870600.
Khalil, Lionel. "Généralisation des réseaux d'interaction avec l'agent amb de Mc Carthy : propriétés et applications". Palaiseau, Ecole polytechnique, 2003. http://www.theses.fr/2003EPXX0015.
Morgado, Laerte Ferreira. "Um metodo para granulometria de imagens topograficas baseado na teoria de calculo da dimensão fractal". [s.n.], 1996. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259957.
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
Made available in DSpace on 2018-07-22T14:40:25Z (GMT). No. of bitstreams: 1 Morgado_LaerteFerreira_M.pdf: 5915978 bytes, checksum: acea29bf8767947951774780e3dfe2b9 (MD5) Previous issue date: 1996
Resumo: Apresentamos um método baseado na Teoria dos Fractais que permite efetuar o cálculo do grau de irregularidade em cada ponto da superfície de uma imagem topográfica. O algoritmo proposto fornece valores que são função da escala de observação, de forma a ignorar irregularidades com tamanhos muito maiores ou muito menores que o valor da escala. Dessa forma, é possível implementar duas funcionalidades: calcular os graus de irregularidade para todos os pixels de uma imagem em uma determinada escala de observação e calcular os graus de irregularidade em diversas escalas para um determinado pixel da imagem. Com a primeira funcionalidade, podemos segmentar a imagem topográfica em regiões de maior ou menor irregularidade quando observada sob uma determinada escala. Com a segunda funcionalidade, podemos estudar a variação do grau de irregularidade de um ponto da imagem quando variamos a escala de observação. Mostramos que esse estudo permite identificar os tamanhos das irregularidades que ocorrem em superfícies topográficas como, por exemplo, os tamanhos médios dos grãos e as distâncias médias entre eles. Um ambiente gráfico foi desenvolvido com a concepção de Orientação a Objetos em C++ para estudo desse algoritmo e pode ser facilmente usado para análise de outros algoritmos similares
Abstract: We describe a method based on the Theory of Fractals to calculate a measure of the degree of irregularity in each surface point of any topographic image. The proposed algorithm gives values that are dependent on the scale of observation so as to ignore irregularities which sizes are much greater or lower than the scale value. Therefore, it is possible to implement two features: calculation of the degrees of irregularity for all the pixels of an image in a given scale of observation and calculation of the degrees of irregularity in many scales of observation for a given image pixel. With the first feature we can segment the topographic image in regions of different degrees of irregularity in a given scale of observation. With the second feature we can study the variation of the degree of irregularity measured for an image pixel while we change the scale of observation. We show that the proposed method allows the identification of the sizes of irregularities that occur in topographic surfaces, such as the mean sizes of the grains
Mestrado
Mestre em Engenharia Elétrica
Libri sul tema "Calcul fractal":
A, Carpinteri, e Mainardi F. 1942-, a cura di. Fractals and fractional calculus in continuum mechanics. Wien: Springer, 1997.
Michael, Frame, Mandelbrot Benoit B e Mathematical Association of America, a cura di. Fractals, graphics, and mathematics education. [Washington, DC]: Published and distributed by the Mathematical Association of America, 2002.
Júnior, Jacob Palis. Hyperbolicity and sensitive chaotic dynamics at homoclinic bifurcations: Fractal dimensions and infinitely many attractors. Cambridge: Cambridge University Press, 1993.
Kaye, Brian H. Chaos & complexity: Discovering the surprising patterns of science and technology. Weinheim: VCH, 1993.
Kaye, Brian H. Chaos & complexity: Discovering the surprising patterns of science and technology. Weinheim: VCH Verlagsgesellschaft, 1993.
Kaye, Brian H. Chaos & complexity: Discovering the surprising patterns of science and technology. New York: Weinheim, 1993.
PISRS 2011 International Conference on Analysis, Fractal Geometry, Dynamical Systems and Economics (2011 Messina, Italy). Fractal geometry and dynamical systems in pure and applied mathematics. A cura di Carfi David 1971-, Lapidus, Michel L. (Michel Laurent), 1956-, Pearse, Erin P. J., 1975-, Van Frankenhuysen Machiel 1967- e Mandelbrot Benoit B. Providence, Rhode Island: American Mathematical Society, 2013.
Ecole d'été de probabilités de Saint-Flour (25th 1995). Lectures on probability theory and statistics: Ecole d'Eté de Probabilités de Saint-Flour XXV--1995. A cura di Barlow M. T, Nualart David 1951-, Bernard P. 1944-, Barlow M. T e Nualart David 1951-. Berlin: Springer, 1998.
Bologna, Mauro, Bruce West e Paolo Grigolini. Physics of Fractal Operators. Springer, 2003.
Bologna, Mauro, Bruce West e Paolo Grigolini. Physics of Fractal Operators. Springer New York, 2012.
Capitoli di libri sul tema "Calcul fractal":
Kolwankar, Kiran M., e Anil D. Gangal. "Local Fractional Calculus: a Calculus for Fractal Space-Time". In Fractals, 171–81. London: Springer London, 1999. http://dx.doi.org/10.1007/978-1-4471-0873-3_12.
Gil’mutdinov, Anis Kharisovich, Pyotr Arkhipovich Ushakov e Reyad El-Khazali. "Fractal Calculus Fundamentals". In Analog Circuits and Signal Processing, 21–39. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-45249-4_2.
West, Bruce J., Paolo Grigolini e Mauro Bologna. "Fractal Calculus for CERTs". In SpringerBriefs in Bioengineering, 69–83. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-46277-1_5.
Chen, Wen, HongGuang Sun e Xicheng Li. "Fractal and Fractional Calculus". In Fractional Derivative Modeling in Mechanics and Engineering, 83–114. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8802-7_3.
West, Bruce J., e W. Alan C. Mutch. "Fractal Calculus for Medicine". In On the Fractal Language of Medicine, 114–32. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003495796-6.
Saichev, Alexander I., e Wojbor A. Woyczyński. "Singular Integrals and Fractal Calculus". In Distributions in the Physical and Engineering Sciences, 149–82. Boston, MA: Birkhäuser Boston, 1997. http://dx.doi.org/10.1007/978-1-4612-4158-4_6.
Saichev, Alexander I., e Wojbor Woyczynski. "Singular Integrals and Fractal Calculus". In Applied and Numerical Harmonic Analysis, 149–82. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97958-8_6.
Banerjee, Santo, D. Easwaramoorthy e A. Gowrisankar. "Fractional Calculus on Fractal Functions". In Understanding Complex Systems, 37–60. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-62672-3_3.
Gorenflo, R., e F. Mainardi. "Fractional Calculus". In Fractals and Fractional Calculus in Continuum Mechanics, 223–76. Vienna: Springer Vienna, 1997. http://dx.doi.org/10.1007/978-3-7091-2664-6_5.
Gorenflo, R. "Fractional Calculus". In Fractals and Fractional Calculus in Continuum Mechanics, 277–90. Vienna: Springer Vienna, 1997. http://dx.doi.org/10.1007/978-3-7091-2664-6_6.
Atti di convegni sul tema "Calcul fractal":
Shockro, Jennifer, e Haris J. Catrakis. "Large Scale Geometrical Aspects of Turbulent Jet Scalar Regions and Interfaces: Measurement and Modeling". In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37091.
Jaggard, Dwight L., e Y. Kim. "Scattering and Inverse scattering from bandlimited fractal slabs". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.wx4.
Bhattacharyya, Arka, Amartya Banerjee, Sayan Chatterjee e Bhaskar Gupta. "Dual-Band Minkowski Fractal Patch Antenna With Polarization Diversity". In 2020 IEEE Calcutta Conference (CALCON). IEEE, 2020. http://dx.doi.org/10.1109/calcon49167.2020.9106540.
Si, Xiuhua, Jinxiang Xi e Xihai Tao. "The Study of Calcium Carbonate Scaling on Low Energy Surfaces". In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22058.
Seal, Sayan, Prasun Chail, Souvik Roy e Abhik Mukherjee. "Exploring the fractal nature in dynamics of crimes during recent Lok Sabha elections in West Bengal". In 2020 IEEE Calcutta Conference (CALCON). IEEE, 2020. http://dx.doi.org/10.1109/calcon49167.2020.9106565.
Mishra, Asha S. "Application of Fractional Calculus in Reservoir Characterization From Pressure Transient Data in Fractal Reservoir With Phase Redistribution". In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86204.
Bogdan, Paul, e Radu Marculescu. "A fractional calculus approach to modeling fractal dynamic games". In 2011 50th IEEE Conference on Decision and Control and European Control Conference (CDC-ECC 2011). IEEE, 2011. http://dx.doi.org/10.1109/cdc.2011.6161323.
Repperger, D. W., K. A. Farris, C. C. Barton e S. Tebbens. "Time series data analysis using fractional calculus concepts and fractal analysis". In 2009 IEEE International Conference on Systems, Man and Cybernetics - SMC. IEEE, 2009. http://dx.doi.org/10.1109/icsmc.2009.5346218.
Butera, Salvatore, e Mario Di Paola. "A physical approach to the connection between fractal geometry and fractional calculus". In 2014 International Conference on Fractional Differentiation and its Applications (ICFDA). IEEE, 2014. http://dx.doi.org/10.1109/icfda.2014.6967378.
Ławrynowicz, Julian, Tatsuro Ogata e Osamu Suzuki. "Differential and integral calculus for a Schauder basis on a fractal set (I) (Schauder basis 80 years after)". In Lvov Mathematical School in the Period 1915-45. Warsaw: Institute of Mathematics Polish Academy of Sciences, 2009. http://dx.doi.org/10.4064/bc87-0-11.