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Artigos de revistas sobre o assunto "Dynamical system modeling"

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Bors, Dorota, e Robert Stańczy. "Dynamical system modeling fermionic limit". Discrete & Continuous Dynamical Systems - B 23, n.º 1 (2018): 45–55. http://dx.doi.org/10.3934/dcdsb.2018004.

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Dmitriev, Andrey, Olga Tsukanova e Svetlana Maltseva. "Modeling of Microblogging Social Networks: Dynamical System vs. Random Dynamical System". Procedia Computer Science 122 (2017): 812–19. http://dx.doi.org/10.1016/j.procs.2017.11.441.

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JANSSON, JOHAN, CLAES JOHNSON e ANDERS LOGG. "COMPUTATIONAL MODELING OF DYNAMICAL SYSTEMS". Mathematical Models and Methods in Applied Sciences 15, n.º 03 (março de 2005): 471–81. http://dx.doi.org/10.1142/s0218202505000431.

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In this short note, we discuss the basic approach to computational modeling of dynamical systems. If a dynamical system contains multiple time scales, ranging from very fast to slow, computational solution of the dynamical system can be very costly. By resolving the fast time scales in a short time simulation, a model for the effect of the small time scale variation on large time scales can be determined, making solution possible on a long time interval. This process of computational modeling can be completely automated. Two examples are presented, including a simple model problem oscillating at a time scale of 10–9 computed over the time interval [0,100], and a lattice consisting of large and small point masses.
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Runolfsson, Thordur. "Towards hybrid system modeling of uncertain complex dynamical systems". Nonlinear Analysis: Hybrid Systems 2, n.º 2 (junho de 2008): 383–93. http://dx.doi.org/10.1016/j.nahs.2006.05.004.

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Redondo, J. M., D. Ibarra-Vega, J. Catumba-Ruíz e M. P. Sánchez-Muñoz. "Hydrological system modeling: Approach for analysis with dynamical systems". Journal of Physics: Conference Series 1514 (março de 2020): 012013. http://dx.doi.org/10.1088/1742-6596/1514/1/012013.

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Frankel, Michael L., Gregor Kovačič, Victor Roytburd e Ilya Timofeyev. "Finite-dimensional dynamical system modeling thermal instabilities". Physica D: Nonlinear Phenomena 137, n.º 3-4 (março de 2000): 295–315. http://dx.doi.org/10.1016/s0167-2789(99)00180-3.

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Nasim, Imran, e Michael E. Henderson. "Dynamically Meaningful Latent Representations of Dynamical Systems". Mathematics 12, n.º 3 (2 de fevereiro de 2024): 476. http://dx.doi.org/10.3390/math12030476.

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Dynamical systems are ubiquitous in the physical world and are often well-described by partial differential equations (PDEs). Despite their formally infinite-dimensional solution space, a number of systems have long time dynamics that live on a low-dimensional manifold. However, current methods to probe the long time dynamics require prerequisite knowledge about the underlying dynamics of the system. In this study, we present a data-driven hybrid modeling approach to help tackle this problem by combining numerically derived representations and latent representations obtained from an autoencoder. We validate our latent representations and show they are dynamically interpretable, capturing the dynamical characteristics of qualitatively distinct solution types. Furthermore, we probe the topological preservation of the latent representation with respect to the raw dynamical data using methods from persistent homology. Finally, we show that our framework is generalizable, having been successfully applied to both integrable and non-integrable systems that capture a rich and diverse array of solution types. Our method does not require any prior dynamical knowledge of the system and can be used to discover the intrinsic dynamical behavior in a purely data-driven way.
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ABEL, MARKUS. "NONPARAMETRIC MODELING AND SPATIOTEMPORAL DYNAMICAL SYSTEMS". International Journal of Bifurcation and Chaos 14, n.º 06 (junho de 2004): 2027–39. http://dx.doi.org/10.1142/s0218127404010382.

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This article describes how to use statistical data analysis to obtain models directly from data. The focus is put on finding nonlinearities within a generalized additive model. These models are found by means of backfitting or more general algorithms, like the alternating conditional expectation value one. The method is illustrated by numerically generated data. As an application, the example of vortex ripple dynamics, a highly complex fluid-granular system, is treated.
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Jian, Shen, Han Feng, Chen Fang, Zhou Qiao e Pavel M. Trivailo. "Dynamics and modeling of rocket towed net system". Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 232, n.º 1 (13 de outubro de 2016): 185–97. http://dx.doi.org/10.1177/0954410016673090.

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In order to study the complex dynamical behavior of the rocket towed net system, a three-dimensional model consisting of a rigid rocket model and a lumped mass net model is built based on the aerodynamics theory. The rocket towed net system model is solved by the fourth-order Runge–Kutta method in simulation. Simulation and experimental results show that the accuracies of rocket towed net system expanding distance were about 90% of the system length. With the comparison of simulation, a rigid multibody model and experimental results in rocket mass center trajectory, velocity, and pitch angle, the dynamical characteristics of rocket towed net system have been basically studied. It illustrates that the lumped mass model simulates the real rocket towed net system flying test better than the rigid multibody model. It also shows that the dynamical parameters of rocket towed net system flight have an impact on the system in the whole flying process. Constitutive model of flexible net mesh-belts can be considered in the future research studies.
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Hahn, Luzia, e Peter Eberhard. "Transient Dynamical-Thermal-Optical System Modeling and Simulation". EPJ Web of Conferences 238 (2020): 12001. http://dx.doi.org/10.1051/epjconf/202023812001.

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In this work, methods and procedures are investigated for the holistic simulation of the dynamicalthermal behavior of high-performance optics like lithography objectives. Flexible multibody systems in combination with model order reduction methods, finite element thermal analysis and optical system analyses are used for transient simulations of the dynamical-thermal behavior of optical systems at low computational cost.
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Teses / dissertações sobre o assunto "Dynamical system modeling"

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Kawashima, Hiroaki. "Interval-Based Hybrid Dynamical System for Modeling Dynamic Events and Structures". 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/68896.

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FRANCH, Daniel Kudlowiez. "Dynamical system modeling with probabilistic finite state automata". Universidade Federal de Pernambuco, 2017. https://repositorio.ufpe.br/handle/123456789/25448.

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FACEPE
Discrete dynamical systems are widely used in a variety of scientific and engineering applications, such as electrical circuits, machine learning, meteorology and neurobiology. Modeling these systems involves performing statistical analysis of the system output to estimate the parameters of a model so it can behave similarly to the original system. These models can be used for simulation, performance analysis, fault detection, among other applications. The current work presents two new algorithms to model discrete dynamical systems from two categories (synchronizable and non-synchronizable) using Probabilistic Finite State Automata (PFSA) by analyzing discrete symbolic sequences generated by the original system and applying statistical methods and inference, machine learning algorithms and graph minimization techniques to obtain compact, precise and efficient PFSA models. Their performance and time complexity are compared with other algorithms present in literature that aim to achieve the same goal by applying the algorithms to a series of common examples.
Sistemas dinâmicos discretos são amplamente usados em uma variedade de aplicações cientifícas e de engenharia, por exemplo, circuitos elétricos, aprendizado de máquina, meteorologia e neurobiologia. O modelamento destes sistemas envolve realizar uma análise estatística de sequências de saída do sistema para estimar parâmetros de um modelo para que este se comporte de maneira similar ao sistema original. Esses modelos podem ser usados para simulação, referência ou detecção de falhas. Este trabalho apresenta dois novos algoritmos para modelar sistemas dinâmicos discretos de duas categorias (sincronizáveis e não-sincronizáveis) por meio de Autômatos Finitos Probabilísticos (PFSA, Probabilistic Finite State Automata) analisando sequências geradas pelo sistema original e aplicando métodos estatísticos, algoritmos de aprendizado de máquina e técnicas de minimização de grafos para obter modelos PFSA compactos e eficientes. Sua performance e complexidade temporal são comparadas com algoritmos presentes na literatura que buscam atingir o mesmo objetivo aplicando os algoritmos a uma série de exemplos.
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Liu, Chunmeni 1970. "Dynamical system modeling of a micro gas turbine engine". Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/9249.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2000.
Also available online at the MIT Theses Online homepage .
Includes bibliographical references (p. 123).
Since 1995, MIT has been developing the technology for a micro gas turbine engine capable of producing tens of watts of power in a package less than one cubic centimeter in volume. The demo engine developed for this research has low and diabtic component performance and severe heat transfer from the turbine side to the compressor side. The goals of this thesis are developing a dynamical model and providing a simulation platform for predicting the microengine performance and control design, as well as giving an estimate of the microengine behavior under current design. The thesis first analyzes and models the dynamical components of the microengine. Then a nonlinear model, a linearized model, and corresponding simulators are derived, which are valid for estimating both the steady state and transient behavior. Simulations are also performed to estimate the microengine performance, which include steady states, linear properties, transient behavior, and sensor options. A parameter study and investigation of the startup process are also performed. Analysis and simulations show that there is the possibility of increasing turbine inlet temperature with decreasing fuel flow rate in some regions. Because of the severe heat transfer and this turbine inlet temperature trend, the microengine system behaves like a second-order system with low damping and poor linear properties. This increases the possibility of surge, over-temperature and over-speed. This also implies a potentially complex control system. The surge margin at the design point is large, but accelerating directly from minimum speed to 100% speed still causes surge. Investigation of the sensor options shows that temperature sensors have relatively fast response time but give multiple estimates of the engine state. Pressure sensors have relatively slow response time but they change monotonically with the engine state. So the future choice of sensors may be some combinations of the two. For the purpose of feedback control, the system is observable from speed, temperature, or pressure measurements. Parameter studies show that the engine performance doesn't change significantly with changes in either nozzle area or the coefficient relating heat flux to compressor efficiency. It does depend strongly on the coefficient relating heat flux to compressor pressure ratio. The value of the compressor peak efficiency affects the engine operation only when it is inside the range of the engine operation. Finally, parameter studies indicate that, to obtain improved transient behavior with less possibility of surge, over-temperature and over-speed, and to simplify the system analysis and design as well as the design and implementation of control laws, it is desirable to reduce the ratio of rotor mechanical inertia to thermal inertia, e.g. by slowing the thermal dynamics. This can in some cases decouple the dynamics of rotor acceleration and heat transfer. Several methods were shown to improve the startup process: higher start speed, higher start spool temperature, and higher start fuel flow input. Simulations also show that the efficiency gradient affects the transient behavior of the engine significantly, thereby effecting the startup process. Finally, the analysis and modeling methodologies presented in this thesis can be applied to other engines with severe heat transfer. The estimates of the engine performance can serve as a reference of similar engines as well.
by Chunmei Liu.
S.M.
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Hsiao, Yu-Chung Ph D. Massachusetts Institute of Technology. "Automated modeling of nonlinear dynamical subsystems for stable system simulation". Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99828.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 107-113).
Automated modeling techniques allow fast prototyping from measurement or simulation data and can facilitate many important application scenarios, for instance, shortening the time frame from subsystem design to system integration, calibrating models with higher-order effects, and providing protected models without revealing the intellectual properties of actual designs. Many existing techniques can generate nonlinear dynamical models that are stable when simulated alone. However, such generated models oftentimes result in unstable simulation when interconnected within a physical network. This is because energy-related system properties are not properly enforced, and the generated models erroneously produce numerical energy, which in turn causes instability of the entire physical network. Therefore, when modeling a system that is unable to generate energy, it is essential to enforce passivity in order to ensure stable system simulation. This thesis presents an algorithm that can automatically generate nonlinear passive dynamical models via convex optimization. Convex constraints are proposed to guarantee model passivity and incremental stability. The generated nonlinear models are suited to be interconnected within physical networks in order to enable the hierarchical modeling strategy. Practical examples include circuit networks and arterial networks. It is demonstrated that our generated models, when interconnected within a system, can be simulated in a numerically stable way. The system dynamics of the interconnected models can be faithfully reproduced for a range of operations and show an excellent agreement with a number of system metrics. In addition, it is also shown via these two applications that the proposed modeling technique is applicable to multiple physical domains.
by Yu-Chung Hsiao.
Ph. D.
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Mattos, César Lincoln Cavalcante. "Recurrent gaussian processes and robust dynamical modeling". reponame:Repositório Institucional da UFC, 2017. http://www.repositorio.ufc.br/handle/riufc/25604.

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MATTOS, C. L. C. Recurrent gaussian processes and robust dynamical modeling. 2017. 189 f. Tese (Doutorado em Engenharia de Teleinformática)–Centro de Tecnologia, Universidade Federal do Ceará, Fortaleza, 2017.
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The study of dynamical systems is widespread across several areas of knowledge. Sequential data is generated constantly by different phenomena, most of them we cannot explain by equations derived from known physical laws and structures. In such context, this thesis aims to tackle the task of nonlinear system identification, which builds models directly from sequential measurements. More specifically, we approach challenging scenarios, such as learning temporal relations from noisy data, data containing discrepant values (outliers) and large datasets. In the interface between statistics, computer science, data analysis and engineering lies the machine learning community, which brings powerful tools to find patterns from data and make predictions. In that sense, we follow methods based on Gaussian Processes (GP), a principled, practical, probabilistic approach to learning in kernel machines. We aim to exploit recent advances in general GP modeling to bring new contributions to the dynamical modeling exercise. Thus, we propose the novel family of Recurrent Gaussian Processes (RGPs) models and extend their concept to handle outlier-robust requirements and scalable stochastic learning. The hierarchical latent (non-observed) structure of those models impose intractabilities in the form of non-analytical expressions, which are handled with the derivation of new variational algorithms to perform approximate deterministic inference as an optimization problem. The presented solutions enable uncertainty propagation on both training and testing, with focus on free simulation. We comprehensively evaluate the proposed methods with both artificial and real system identification benchmarks, as well as other related dynamical settings. The obtained results indicate that the proposed approaches are competitive when compared to the state of the art in the aforementioned complicated setups and that GP-based dynamical modeling is a promising area of research.
O estudo dos sistemas dinâmicos encontra-se disseminado em várias áreas do conhecimento. Dados sequenciais são gerados constantemente por diversos fenômenos, a maioria deles não passíveis de serem explicados por equações derivadas de leis físicas e estruturas conhecidas. Nesse contexto, esta tese tem como objetivo abordar a tarefa de identificação de sistemas não lineares, por meio da qual são obtidos modelos diretamente a partir de observações sequenciais. Mais especificamente, nós abordamos cenários desafiadores, tais como o aprendizado de relações temporais a partir de dados ruidosos, dados contendo valores discrepantes (outliers) e grandes conjuntos de dados. Na interface entre estatísticas, ciência da computação, análise de dados e engenharia encontra-se a comunidade de aprendizagem de máquina, que fornece ferramentas poderosas para encontrar padrões a partir de dados e fazer previsões. Nesse sentido, seguimos métodos baseados em Processos Gaussianos (PGs), uma abordagem probabilística prática para a aprendizagem de máquinas de kernel. A partir de avanços recentes em modelagem geral baseada em PGs, introduzimos novas contribuições para o exercício de modelagem dinâmica. Desse modo, propomos a nova família de modelos de Processos Gaussianos Recorrentes (RGPs, da sigla em inglês) e estendemos seu conceito para lidar com requisitos de robustez a outliers e aprendizagem estocástica escalável. A estrutura hierárquica e latente (não-observada) desses modelos impõe expressões não- analíticas, que são resolvidas com a derivação de novos algoritmos variacionais para realizar inferência determinista aproximada como um problema de otimização. As soluções apresentadas permitem a propagação da incerteza tanto no treinamento quanto no teste, com foco em realizar simulação livre. Nós avaliamos em detalhe os métodos propostos com benchmarks artificiais e reais da área de identificação de sistemas, assim como outras tarefas envolvendo dados dinâmicos. Os resultados obtidos indicam que nossas propostas são competitivas quando comparadas ao estado da arte, mesmo nos cenários que apresentam as complicações supracitadas, e que a modelagem dinâmica baseada em PGs é uma área de pesquisa promissora.
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Erdogan, Ezgi. "A Complex Dynamical Systems Model Of Education, Research, Employment, And Sustainable Human Development". Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/3/12612138/index.pdf.

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Economic events of this era reflect the fact that the value of information and technology has surpassed the value of physical production. This motivates countries to focus on increasing the education levels of citizens. However, policy making about education system and its returns requires dynamical analyses in order to be sustainable. The study aims to investigate the dynamic characteristics of a country-wide education system, in particular, that of Turkey. System Dynamics modeling, which is one of the most commonly referred tools for understanding the complex social structures, is used. Our model introduces dynamic relationships among different classes of labor forces with varying education levels, university admissions, research quality, and the investments made in education, research and other sectors. Model experimentation provides new insights into the investment and capacity-related aspects of the education system environment.
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Wang, Chiying. "Contributions to Collective Dynamical Clustering-Modeling of Discrete Time Series". Digital WPI, 2016. https://digitalcommons.wpi.edu/etd-dissertations/198.

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The analysis of sequential data is important in business, science, and engineering, for tasks such as signal processing, user behavior mining, and commercial transactions analysis. In this dissertation, we build upon the Collective Dynamical Modeling and Clustering (CDMC) framework for discrete time series modeling, by making contributions to clustering initialization, dynamical modeling, and scaling. We first propose a modified Dynamic Time Warping (DTW) approach for clustering initialization within CDMC. The proposed approach provides DTW metrics that penalize deviations of the warping path from the path of constant slope. This reduces over-warping, while retaining the efficiency advantages of global constraint approaches, and without relying on domain dependent constraints. Second, we investigate the use of semi-Markov chains as dynamical models of temporal sequences in which state changes occur infrequently. Semi-Markov chains allow explicitly specifying the distribution of state visit durations. This makes them superior to traditional Markov chains, which implicitly assume an exponential state duration distribution. Third, we consider convergence properties of the CDMC framework. We establish convergence by viewing CDMC from an Expectation Maximization (EM) perspective. We investigate the effect on the time to convergence of our efficient DTW-based initialization technique and selected dynamical models. We also explore the convergence implications of various stopping criteria. Fourth, we consider scaling up CDMC to process big data, using Storm, an open source distributed real-time computation system that supports batch and distributed data processing. We performed experimental evaluation on human sleep data and on user web navigation data. Our results demonstrate the superiority of the strategies introduced in this dissertation over state-of-the-art techniques in terms of modeling quality and efficiency.
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Anderson, James David. "Dynamical system decomposition and analysis using convex optimization". Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:624001be-28d5-4837-a7d8-2222e270e658.

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This thesis is concerned with investigating new methods for the analysis of large-scale dynamical systems using convex optimization. The proposed methodology is based on composite Lyapunov theory and is computationally implemented using polynomial programming techniques. The main result of this work is the development of a system decomposition framework that makes it possible to analyze systems that are of such a scale that traditional methods cannot cope with. We begin by addressing the problem of model invalidation. A barrier certificate method for invalidating models in the presence of uncertain data is presented for both continuous and discrete time models. It is shown how a re-parameterization of the time dependent variables can improve the numerical conditioning of the underlying optimization problem. The main contribution of this thesis is the development of an automated dynamical system decomposition framework that permits us to verify the stability of systems that typically have a state dimension large enough to render traditional computational methods intractable. The underlying idea is to decompose a system into a set of lower order subsystems connected in feedback in such a manner that composite methods for stability verification may be employed. What is unique about the algorithm presented is that it takes into account both dynamics and the topology of the interconnection graph. In the first instance we illustrate the methodology with an ecological network and primal Internet congestion control scheme. The versatility of the decomposition framework is also highlighted when it is shown that when applied to a model of the EGF-MAPK signaling pathway it is capable of identifying biologically relevant subsystems in addition to stability verification. Finally we introduce stability metrics for interconnected dynamical systems based on the theory of dissipativity. We conclude by outlining a clustering based decomposition algorithm that explicitly takes into account the input and output dynamics when determining the system decomposition.
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Xie, Junfei. "Data-Driven Decision-Making Framework for Large-Scale Dynamical Systems under Uncertainty". Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc862845/.

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Managing large-scale dynamical systems (e.g., transportation systems, complex information systems, and power networks, etc.) in real-time is very challenging considering their complicated system dynamics, intricate network interactions, large scale, and especially the existence of various uncertainties. To address this issue, intelligent techniques which can quickly design decision-making strategies that are robust to uncertainties are needed. This dissertation aims to conquer these challenges by exploring a data-driven decision-making framework, which leverages big-data techniques and scalable uncertainty evaluation approaches to quickly solve optimal control problems. In particular, following techniques have been developed along this direction: 1) system modeling approaches to simplify the system analysis and design procedures for multiple applications; 2) effective simulation and analytical based approaches to efficiently evaluate system performance and design control strategies under uncertainty; and 3) big-data techniques that allow some computations of control strategies to be completed offline. These techniques and tools for analysis, design and control contribute to a wide range of applications including air traffic flow management, complex information systems, and airborne networks.
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Yin, Yuan. "Physics-Aware Deep Learning and Dynamical Systems : Hybrid Modeling and Generalization". Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS161.

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L'apprentissage profond a fait des progrès dans divers domaines et est devenu un outil prometteur pour modéliser les phénomènes dynamiques physiques présentant des relations hautement non linéaires. Cependant, les approches existantes sont limitées dans leur capacité à faire des prédictions physiquement fiables en raison du manque de connaissances préalables et à gérer les scénarios du monde réel où les données proviennent de dynamiques multiples ou sont irrégulièrement distribuées dans le temps et l'espace. Cette thèse vise à surmonter ces limitations dans les directions suivantes: améliorer la modélisation de la dynamique basée sur les réseaux neuronaux en exploitant des modèles physiques grâce à la modélisation hybride ; étendre le pouvoir de généralisation des modèles de dynamique en apprenant les similitudes à partir de données de différentes dynamiques pour extrapoler vers des systèmes invisibles ; et gérer les données de forme libre et prédire continuellement les phénomènes dans le temps et l'espace grâce à la modélisation continue. Nous soulignons la polyvalence des techniques d'apprentissage profond, et les directions proposées montrent des promesses pour améliorer leur précision et leur puissance de généralisation, ouvrant la voie à des recherches futures dans de nouvelles applications
Deep learning has made significant progress in various fields and has emerged as a promising tool for modeling physical dynamical phenomena that exhibit highly nonlinear relationships. However, existing approaches are limited in their ability to make physically sound predictions due to the lack of prior knowledge and to handle real-world scenarios where data comes from multiple dynamics or is irregularly distributed in time and space. This thesis aims to overcome these limitations in the following directions: improving neural network-based dynamics modeling by leveraging physical models through hybrid modeling; extending the generalization power of dynamics models by learning commonalities from data of different dynamics to extrapolate to unseen systems; and handling free-form data and continuously predicting phenomena in time and space through continuous modeling. We highlight the versatility of deep learning techniques, and the proposed directions show promise for improving their accuracy and generalization power, paving the way for future research in new applications
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Livros sobre o assunto "Dynamical system modeling"

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Fuchs, Hans U. Modeling of uniform dynamical systems: A system dynamics approach. Zürich: Füssli, 2002.

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2

Goebel, Rafal. Hybrid dynamical systems: Modeling, stability, and robustness. Princeton, N.J: Princeton University Press, 2012.

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3

Palm, William J. Modeling, analysis, and control of dynamic systems. 2a ed. New York: Wiley, 1998.

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4

Palm, William J. Modeling, analysis, and control of dynamic systems. 2a ed. New York: Wiley, 1999.

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5

Mukherjee, Animesh. Dynamics On and Of Complex Networks, Volume 2: Applications to Time-Varying Dynamical Systems. New York, NY: Springer New York, 2013.

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6

Abarbanel, Henry. Predicting the Future: Completing Models of Observed Complex Systems. New York, NY: Springer New York, 2013.

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7

Beltrami, Edward J. Mathematics for dynamic modeling. Boston: Academic Press, 1987.

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8

Beltrami, Edward J. Mathematics for dynamic modeling. 2a ed. Boston: Academic Press, 1998.

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9

Awrejcewicz, Jan, ed. Dynamical Systems: Modelling. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42402-6.

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L, Margolis Donald, e Rosenberg Ronald C, eds. System dynamics: Modeling and simulation of mechatronic systems. 3a ed. New York: Wiley, 2000.

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Capítulos de livros sobre o assunto "Dynamical system modeling"

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Fox, William P. "Discrete Dynamical System Models". In Mathematical Modeling for Business Analytics, 247–306. Boca Raton, FL : CRC Press, 2018.: Chapman and Hall/CRC, 2017. http://dx.doi.org/10.1201/9781315150208-7.

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Fox, William P. "Mathematics of Finance with Discrete Dynamical System". In Mathematical Modeling for Business Analytics, 335–75. Boca Raton, FL : CRC Press, 2018.: Chapman and Hall/CRC, 2017. http://dx.doi.org/10.1201/9781315150208-9.

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Axenides, M., E. Floratos, D. Katsinis e G. Linardopoulos. "M-Theory as a Dynamical System Generator". In 13th Chaotic Modeling and Simulation International Conference, 73–89. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70795-8_6.

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Royer, J. F. "The GCM as a Dynamical System". In Numerical Modeling of the Global Atmosphere in the Climate System, 29–58. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4046-1_2.

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Boutalis, Yiannis, Dimitrios Theodoridis, Theodore Kottas e Manolis A. Christodoulou. "Identification of Dynamical Systems Using Recurrent Neurofuzzy Modeling". In System Identification and Adaptive Control, 25–55. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06364-5_2.

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Avşar, Ahmet Levent, İstek Tatar e Cihangir Duran. "Dynamical Modeling and Verification of Underwater Acoustic System". In Topics in Model Validation and Uncertainty Quantification, Volume 5, 255–63. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6564-5_24.

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Chmielewski, Adrian, Jakub Możaryn, Robert Gumiński, Krzysztof Bogdziński e Przemysław Szulim. "Experimental Evaluation of Mathematical and Artificial Neural Network Modeling of Energy Storage System". In Dynamical Systems in Applications, 49–62. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96601-4_5.

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Antoniou, Stathis. "A Dynamical System Modeling Solid 2-Dimensional 0-Surgery". In Mathematical Modeling Through Topological Surgery and Applications, 41–48. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97067-7_7.

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Coolen, Anthony C. C., Theodore Nikoletopoulos, Shunta Arai e Kazuyuki Tanaka. "Dynamical Analysis of Quantum Annealing". In Sublinear Computation Paradigm, 295–317. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-4095-7_12.

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AbstractQuantum annealing aims to provide a faster method than classical computing for finding the minima of complicated functions, and it has created increasing interest in the relaxation dynamics of quantum spin systems. Moreover, problems in quantum annealing caused by first-order phase transitions can be reduced via appropriate temporal adjustment of control parameters, and in order to do this optimally, it is helpful to predict the evolution of the system at the level of macroscopic observables. Solving the dynamics of quantum ensembles is nontrivial, requiring modeling of both the quantum spin system and its interaction with the environment with which it exchanges energy. An alternative approach to the dynamics of quantum spin systems was proposed about a decade ago. It involves creating stochastic proxy dynamics via the Suzuki-Trotter mapping of the quantum ensemble to a classical one (the quantum Monte Carlo method), and deriving from this new dynamics closed macroscopic equations for macroscopic observables using the dynamical replica method. In this chapter, we give an introduction to this approach, focusing on the ideas and assumptions behind the derivations, and on its potential and limitations.
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Li, Guoshi, e Thomas A. Cleland. "Generative Biophysical Modeling of Dynamical Networks in the Olfactory System". In Methods in Molecular Biology, 265–88. New York, NY: Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-8609-5_20.

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Trabalhos de conferências sobre o assunto "Dynamical system modeling"

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Kuhlman, Chris J., V. S. Anil Kumar, Madhav V. Marathe, Henning S. Mortveit, Samarth Swarup, Gaurav Tuli, S. S. Ravi e Daniel J. Rosenkrantz. "A general-purpose graph dynamical system modeling framework". In 2011 Winter Simulation Conference - (WSC 2011). IEEE, 2011. http://dx.doi.org/10.1109/wsc.2011.6147758.

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Lee, Chan-Su. "Human Action Recognition Using Tensor Dynamical System Modeling". In 2017 IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW). IEEE, 2017. http://dx.doi.org/10.1109/cvprw.2017.242.

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Saadi de Almeida Lettieri, Davi, e Leonardo Santos de Brito Alves. "Modeling a dynamical system from low-sampled data". In 27th Brazilian Congress of Thermal Sciences and Engineering. ABCM, 2023. http://dx.doi.org/10.26678/abcm.cobem2023.cob2023-1366.

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Yilmaz, Sevcan, e Yusuf Oysal. "Dynamic fuzzy system design for modeling and control of nonlinear dynamical processes". In 2015 Science and Information Conference (SAI). IEEE, 2015. http://dx.doi.org/10.1109/sai.2015.7237183.

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Luo, Yang, Natalie Baddour e Ming Liang. "Dynamical Modeling of Gear Transmission Considering Gearbox Casing". In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85656.

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Much research has been carried out to investigate the dynamical response of a gear system because of its importance on vibration feature analysis. It is well known that the gearbox casing is one of the most important components of the gear system and plays an important role in signal propagation. However, its effects have widely been neglected within the dynamic simulations and few dynamic models have considered the gearbox casing when modeling a gear transmission. This paper proposes a gear transmission dynamical model with the consideration of the effects of gearbox casing. The proposed dynamical model incorporates TVMS, a time-varying load sharing ratio, as well as dynamic tooth contact friction forces, friction moments and dynamic mesh damping coefficients. The proposed gear dynamical model is validated by comparison with responses obtained from experimental test rigs under different speed conditions. Comparisons indicate that the responses of the proposed dynamical model are consistent with experimental results, in both time and frequency domains under different rotation speeds.
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Hadizadeh, Ehsan, e Kourosh H. Shirazi. "Dynamical Modeling for Improvement of Water Treatment System using Bond Graph Method". In Modelling and Simulation. Calgary,AB,Canada: ACTAPRESS, 2011. http://dx.doi.org/10.2316/p.2011.735-088.

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Yang, Yejiang, e Weiming Xiang. "Modeling Dynamical Systems with Neural Hybrid System Framework via Maximum Entropy Approach". In 2023 American Control Conference (ACC). IEEE, 2023. http://dx.doi.org/10.23919/acc55779.2023.10155820.

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Diaz-Saldierna, L. H., D. Langarica-Cordoba, J. Leyva-Ramos e J. A. Morales-Saldana. "Dynamical modeling for a fuel-cell based power generation system". In 2016 IEEE International Conference on Automatica (ICA-ACCA). IEEE, 2016. http://dx.doi.org/10.1109/ica-acca.2016.7778478.

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Zhang Juncai. "Dynamic task studying of Multi-intelligence Agents based on dynamical node model in cold forming". In 2010 International Conference on Computer Application and System Modeling (ICCASM 2010). IEEE, 2010. http://dx.doi.org/10.1109/iccasm.2010.5620471.

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Rozenberg, Valerii L'vovich. "Dynamical reconstruction of inputs in a stochastic diffusion system". In International conference "Systems Analysis: Modeling and Control" in memory of Academician A. V. Kryazhimskiy. Moscow: Steklov Mathematical Institute, 2018. http://dx.doi.org/10.4213/proc20604.

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Relatórios de organizações sobre o assunto "Dynamical system modeling"

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Perdigão, Rui A. P., e Julia Hall. Spatiotemporal Causality and Predictability Beyond Recurrence Collapse in Complex Coevolutionary Systems. Meteoceanics, novembro de 2020. http://dx.doi.org/10.46337/201111.

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Causality and Predictability of Complex Systems pose fundamental challenges even under well-defined structural stochastic-dynamic conditions where the laws of motion and system symmetries are known. However, the edifice of complexity can be profoundly transformed by structural-functional coevolution and non-recurrent elusive mechanisms changing the very same invariants of motion that had been taken for granted. This leads to recurrence collapse and memory loss, precluding the ability of traditional stochastic-dynamic and information-theoretic metrics to provide reliable information about the non-recurrent emergence of fundamental new properties absent from the a priori kinematic geometric and statistical features. Unveiling causal mechanisms and eliciting system dynamic predictability under such challenging conditions is not only a fundamental problem in mathematical and statistical physics, but also one of critical importance to dynamic modelling, risk assessment and decision support e.g. regarding non-recurrent critical transitions and extreme events. In order to address these challenges, generalized metrics in non-ergodic information physics are hereby introduced for unveiling elusive dynamics, causality and predictability of complex dynamical systems undergoing far-from-equilibrium structural-functional coevolution. With these methodological developments at hand, hidden dynamic information is hereby brought out and explicitly quantified even beyond post-critical regime collapse, long after statistical information is lost. The added causal insights and operational predictive value are further highlighted by evaluating the new information metrics among statistically independent variables, where traditional techniques therefore find no information links. Notwithstanding the factorability of the distributions associated to the aforementioned independent variables, synergistic and redundant information are found to emerge from microphysical, event-scale codependencies in far-from-equilibrium nonlinear statistical mechanics. The findings are illustrated to shed light onto fundamental causal mechanisms and unveil elusive dynamic predictability of non-recurrent critical transitions and extreme events across multiscale hydro-climatic problems.
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Bishop, A., P. Lomdahl, N. G. Jensen, D. S. Cai, F. Mertenz, Hidetoshi Konno e M. Salkola. Modeling mesoscopic phenomena in extended dynamical systems. Office of Scientific and Technical Information (OSTI), agosto de 1997. http://dx.doi.org/10.2172/522274.

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Matei, Ion, e Conrad E. Bock. Modeling Methodologies and Simulation for Dynamical Systems. National Institute of Standards and Technology, agosto de 2012. http://dx.doi.org/10.6028/nist.ir.7875.

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Водолєєва, І. С., А. О. Лазаренко e В. М. Соловйов. Дослідження стійкості мультиплексних мереж під час кризових явищ. Видавець Вовчок О.Ю., 2017. http://dx.doi.org/10.31812/0564/1259.

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Demonstrated features of modeling random and directed attacks on the network as the basis for timely monitoring adverse events and to ensure the stability and reliability of the system. A testing system developed indicators robustness for example the actual functioning of complex systems, including a series of attacks on the social, technical and terror networks modeled changing dynamics of the occurrence of such attacks. Analysis of the results gives rise to recommendations for practical application range of indicators developed as a system of sustainable development of complex socio-economic systems.
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Perdigão, Rui A. P. New Horizons of Predictability in Complex Dynamical Systems: From Fundamental Physics to Climate and Society. Meteoceanics, outubro de 2021. http://dx.doi.org/10.46337/211021.

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Discerning the dynamics of complex systems in a mathematically rigorous and physically consistent manner is as fascinating as intimidating of a challenge, stirring deeply and intrinsically with the most fundamental Physics, while at the same time percolating through the deepest meanders of quotidian life. The socio-natural coevolution in climate dynamics is an example of that, exhibiting a striking articulation between governing principles and free will, in a stochastic-dynamic resonance that goes way beyond a reductionist dichotomy between cosmos and chaos. Subjacent to the conceptual and operational interdisciplinarity of that challenge, lies the simple formal elegance of a lingua franca for communication with Nature. This emerges from the innermost mathematical core of the Physics of Coevolutionary Complex Systems, articulating the wealth of insights and flavours from frontier natural, social and technical sciences in a coherent, integrated manner. Communicating thus with Nature, we equip ourselves with formal tools to better appreciate and discern complexity, by deciphering a synergistic codex underlying its emergence and dynamics. Thereby opening new pathways to see the “invisible” and predict the “unpredictable” – including relative to emergent non-recurrent phenomena such as irreversible transformations and extreme geophysical events in a changing climate. Frontier advances will be shared pertaining a dynamic that translates not only the formal, aesthetical and functional beauty of the Physics of Coevolutionary Complex Systems, but also enables and capacitates the analysis, modelling and decision support in crucial matters for the environment and society. By taking our emerging Physics in an optic of operational empowerment, some of our pioneering advances will be addressed such as the intelligence system Earth System Dynamic Intelligence and the Meteoceanics QITES Constellation, at the interface between frontier non-linear dynamics and emerging quantum technologies, to take the pulse of our planet, including in the detection and early warning of extreme geophysical events from Space.
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McDevitt, Michael E. System Dynamics Aviation Readiness Modeling Demonstration. Fort Belvoir, VA: Defense Technical Information Center, agosto de 2005. http://dx.doi.org/10.21236/ada436605.

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Anderson, Ed, Nazli Choucri, Daniel Goldsmith, Stuart E. Madnick, Michael Siegel e Dan Sturtevant. System Dynamics Modeling for Proactive Intelligence. Fort Belvoir, VA: Defense Technical Information Center, janeiro de 2010. http://dx.doi.org/10.21236/ada514594.

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Ricca, Bernard. Introduction to Nonlinear Dynamical Systems and Analysis. Instats Inc., 2024. http://dx.doi.org/10.61700/j16tr1vnie1lu1801.

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This seminar introduces nonlinear dynamical systems analyses tailored for researchers across the social, health, and physical sciences, providing a framework to model complex human behavior and societal interactions. Participants will gain hands-on expertise in using R for nonlinear dynamical systems modeling, exploring concepts such as fixed points, stability, and attractors, with practical applications to enhance their research.
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Equihua, M., e O. Perez-Maqueo. Mathematical Modeling and Conservation. American Museum of Natural History, 2010. http://dx.doi.org/10.5531/cbc.ncep.0154.

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Formal models are indispensable tools in natural resource management and in conservation biology. Explicit modeling can be a helpful tool for studying these systems, communicating across disciplines, and integrating varying viewpoints of numerous stakeholders. This module demonstrates how to explicitly construct models as alternative representations to help interpret and understand nature. Through a synthesis and two exercises, it describes the general context of scientific modeling (i.e., use and types of models), and allows students to practice building a model by evaluating the relationship between rabbit and fox population dynamics - from stating the problem, constructing a dynamic hypothesis, and formulating and testing the model.
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Brockett, R. W. Modeling and Estimation Theory for Stochastic Dynamical Systems. Fort Belvoir, VA: Defense Technical Information Center, setembro de 1986. http://dx.doi.org/10.21236/ada172902.

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