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检索条件"任意字段=International Conference on Computer Modeling and Simulation"

共 35208 条记录，以下是4971-4980 订阅

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Weak Pulse Signal Detecting under Chaotic Noise with Wavelet Neural Network

Weak Pulse Signal Detecting under Chaotic Noise with Wavelet...

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Intelligent Computing and Human-computer Interaction (ICHCI), international conference on

作者： Liyun Su Wenqian Zhou School of Science Chongqing University of Technology Chongqing China

ISBN: (纸本)9781665407656

In this paper, wavelet neural network is used to detect the weak pulse signal in the chaotic noise background. The detection process is as follows: Firstly, the observed signal is reconstructed; Then the wavelet neural network is used for one-step prediction to get the signal error; Finally, we apply the dynamic detection method proposed in this paper to deal with the signal error. In order to show the detection effect, we designed three simulation experiments. The data used in the three experiments is composed of the chaotic signal obtained by solving the Lorentz equation plus white noise and the target signal. Three simulation experiments show that the detection effect of this model is very good when the SNR is greater than −153.66038 dB; We use the model in this paper to detect whether there is a weak pulse signal, and get that ACC and Sensitivity are 1, while other models are less than 1.

关键词： Human computer interaction Sensitivity Computational modeling Neural networks White noise Mathematical models Signal detection

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Artificial Conversational Agent using Robust Adversarial Reinforcement Learning

Artificial Conversational Agent using Robust Adversarial Rei...

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international conference on computer Communication and Informatics (ICCCI)

作者： Isha Wadekar BE Computer Engineering Vidyavardhini's College of Engineering and Technology Mumbai India

Reinforcement learning (R.L.) is an effective and practical means for resolving problems where the broker possesses no information or knowledge about the environment. The agent acquires knowledge that is conditioned on two components: trial-and-error and rewards. An R.L. agent determines an effective approach by interacting directly with the setting and acquiring information regarding the circumstances. However, many modern R.L.-based strategies neglect to theorise considering there is an enormous rift within the simulation and the physical world due to which policy-learning tactics displease that stretches from simulation to physical world Even if design learning is achieved in the physical world, the knowledge inadequacy leads to failed generalization policies from suiting to test circumstances. The intention of robust adversarial reinforcement learning(RARL) is where an agent is instructed to perform in the presence of a destabilizing opponent(adversary agent) that connects impedance to the system. The combined trained adversary is reinforced so that the actual agent i.e. the protagonist is equipped rigorously.

关键词： Computational modeling Neural networks Stochastic processes Reinforcement learning Manuals Tools Encoding

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simulation Study of the Shock Wave Effect of Embedded Explosion of Warhead 20

Simulation Study of the Shock Wave Effect of Embedded Explos...

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12th international conference on computer modeling and simulation, ICCMS 2020 and the 9th international conference on Intelligent Computing and Applications. ICICA 2020

作者： Maohua, Du Jun, Dong Weili, Wang Naval University of Engineering Wuhan Hubei430033 China

ISBN: (纸本)9781450377034

In this paper, finite element method was used to simulate and calculate the damage effect of shock wave caused by the explosion of warhead embedded onto warship cabin structure. The result showed that shock wave was the main factor causing damage to warship cabin and the shock wave generated by explosion could cause serious damage to personnel, instrumentation and equipment. At the same time, the peak pressure of shock wave inside the cabin decreases significantly due to the pressure relief effect of armor-piercing crevasse, thus its damage to cabin structure was relatively small. Detonation product could also cause serious damage to the embedded part of cabin structure. © 2020 ACM.

关键词： Shock waves

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Estimation of gas exchange parameters in the engine by numerical simulation 2

Estimation of gas exchange parameters in the engine by numer...

引用

2nd international Scientific conference on Applied Physics, Information Technologies and Engineering (APITECH)

作者： Zholobov, L. A. Medvedev, A., V Pasin, A., V Novozhilov, A., I Nizhny Novgorod State Agr Acad Dept Exploitat Mobile Power Vehicles & Agr Machin Gagarin Prospect 97 Nizhnii Novgorod 603107 Russia

The article is devoted to mathematical modeling of gas exchange processes. The features of modeling gas exchange processes based on gas dynamics equations are shown. The parameters of the gas flow are calculated by three conservation laws obtained by applying the general laws of physics to the elementary mass released in the flow, followed by a transition to the limit when the volume occupied by this mass tends to zero: momentum, mass, and energy. A mathematical model of the working process in the engine cylinder is created by the necessary conditions for calculating the entire gas exchange. Using a computer allows for a more accurate and complete description of all the main features. In the foreground is not the complexity and volume of calculations, but the accuracy of approximating the processes of fresh charge entering the engine cylinders, the air flow in the intake tract, the possibility of a comprehensive study of the effect on the filling process of each of the parameters of the intake tract design and gas distribution, and the features of the engine operation mode under study. Filling dynamic phenomena in the intake system has the main goal of optimizing engine design parameters.

关键词： Flow of gases

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Platform Incentives and Willingness of Participant for Investment on Livestreaming E-commerce Model : computer-aided simulated analysis based on evolutionary game

Platform Incentives and Willingness of Participant for Inves...

引用

computer Information Science and Artificial Intelligence (CISAI), international conference on

作者： Jingwen Tan Shixi Kang Yang Qu School of Economics Henan University Kaifeng China College of Physics and Electronic Information Luoyang Normal University Luoyang China

ISBN: (纸本)9781665406932

computer simulation is a common research method in the field of evolutionary game. This paper introduce a selection on the strategy of both buyers and sellers for participating in livestreaming e-commerce model by aiming at the current development of livestreaming e-commerce. We study the platform’s third-party incentive mechanism to construct the buyers-sellers evolutionary game model by aiming at the hypothesis of bounded rationality. To slove the evolutionarily stable strategy by the stability principle, we figure out the systematic stable development conditions by the quantitative language, and conduct the numerical simulation for the evolutionarily stable strategy under different parameters by the Matlab. As what it was shown by the results: buyers and consumer’s concern and investment on online livestreaming shopping form are closely related to its yield rate, cost, and interest acquired from “free riding”; Platform incentive has significant positive impact on the investment willingness of both game parties. As the gaining rate of investment income increases gradually, both game parties’ probability of selecting concern and investment is increasing accordingly and many evolutionary stable strategies may emerge.

关键词： Systematics Computational modeling Games Numerical simulation Mathematical models Stability analysis Numerical models

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Studying Characteristics of Transmission Lines with Help of computer simulation in the Matlab Environment

Studying Characteristics of Transmission Lines with Help of ...

引用

international Scientific-Practical conference Problems of Infocommunications Science and Technology

作者： Oleksandr Pliushch Serhii Toliupa Anatolii Rybydajlo Mobile and Videoinformational Technologies State University of Telecommunications Kyiv Ukraine Cyber Security and Information Protection Taras Shevchenko National University Kyiv Ukraine Center for Military and Strategic Studies National Defence University of Ukraine named after Ivan Cherniakhovskyi Kyiv Ukraine

ISBN: (纸本)9781665406833

Use of transmission lines in telecommunications is considered. It is stressed that signals' behavior in the lines exerts considerable influence on the characteristics of telecommunication networks. Analytical methods of studying signals' behavior in the telecommunication lines is shown to encounter substantial difficulties. It is proposed to use computer simulation of the lines in Matlab environment. For a long line with distributed parameters, its simplified equivalent circuit with lumped components is introduced. It is shown that the circuit can be described using Kirchhoff's laws and relationship between voltage and current for the individual elements of the equivalent circuit. Systems of differential equations that determine the behavior of the line are obtained. To facilitate digital computer simulation, transition from the system of differential equations to the system of difference equations is performed. As an example, behavior of the beforehand charged telecommunication line with twenty typical elements is studied for the case of its discharge on a resistive load. simulation results prove that the corresponding model in Matlab environment correctly reflects all the underlying electromagnetic processes in the line as well as helps to elucidate some aspects that are not possible to observe in real-life experiments. The proposed method can be effectively used to study any telecommunication lines that can be reduced to the equivalent circuits with lumped parameters.

关键词： Power transmission lines Computational modeling Differential equations Mathematical models Telecommunications Behavioral sciences Integrated circuit modeling

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Analyzing Chaotic Jerk System with Hyperbolic Sine: a new algorithm for Engineering Applications

Analyzing Chaotic Jerk System with Hyperbolic Sine: a new al...

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Information Technology (ACIT)

作者： Raed M. Khalil Rania Saadeh Mohamed A. Abdoon Mohammed Berir Ahmad Qazza Ali Elrashidi Department of Computer Information Systems Balqa’ Applied University Salt Jordan Department of Mathematics Zarqa University Zarqa Jordan Department of Basic Sciences Deanship King Saud University Riyadh Saudi Arabia Department of Mathematics Al-Baha University Baljurashi Saudi Arabia Department of Electrical Engineering University of Business and Technology Jeddah Saudi Arabia

ISBN: (数字)9798331540012

ISBN: (纸本)9798331540029

this paper examines numerical solutions and applications of an innovative Chaotic Jerk System utilizing the Caputo-Fabrizio fractional derivative (CF-FD). Chaotic systems display complex and unpredictable behaviors, which are recognized as significant in secure communication, data encryption, and random number generation. Employing both the Caputo-Fabrizio fractional derivative and the theory of fractional calculus allows this study to present complex behaviors in compliance with memory effects and long-range interdependence. The computational approach has been introduced in the work and used to solve this chaotic system, which will eventually help us explore the dynamic behavior of such systems. At the same time, it scrutinizes a system's chaos, although closely recreating its action with. Initial conditions and parameters by executing numerical analysis, for example. Moreover, the paper gives an illustrative example for using this chaotic system in secure communication, data encryption, and random number generation. This article develops the phase form of a four-dimensional chaotic system using fractional calculus techniques and, hence, manipulates its chaos. The study provides a bridge between theory and application, an important function that allows for modern innovations in a wide spectrum of areas. We quantified the behavior of this system through numerical simulations and analytical exams, addressing methodologically different conditions thereon. These goals feed into a deeper knowledge of emergent complex chaotic dynamics as well as how the system might be implemented in applications such as secure communication and data encryption. Fractional calculus and chaotic systems have numerous and ever-expanding applications in engineering, helping to improve signal processing, modeling, communication, control, encryption, and our general knowledge of complicated dynamic systems.

关键词： Technological innovation Chaotic communication Signal processing algorithms Signal processing Propulsion Numerical simulation Encryption Fractional calculus Random number generation Pragmatics

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A High-Fidelity 3D Micromechanical Model of Ventricular Myocardium 11th

A High-Fidelity 3D Micromechanical Model of Ventricular Myoc...

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11th international conference on Functional Imaging and modeling of the Heart, FIMH 2021

作者： Li, David S. Mendiola, Emilio A. Avazmohammadi, Reza Sachse, Frank B. Sacks, Michael S. James T. Willerson Center for Cardiovascular Modeling and Simulation Oden Institute for Computational Engineering and Sciences Department of Biomedical Engineering The University of Texas at Austin AustinTX United States Computational Cardiovascular Bioengineering Lab Department of Biomedical Engineering Texas A&M University College StationTX United States Nora Eccles Harrison Cardiovascular Research and Training Institute Department of Biomedical Engineering The University of Utah Salt Lake CityUT United States

ISBN: (纸本)9783030787097

Pulmonary arterial hypertension (PAH) imposes a pressure overload on the right ventricle (RV), leading to myofiber hypertrophy and remodeling of the extracellular collagen fiber network. While the macroscopic behavior of healthy and post-PAH RV free wall (RVFW) tissue has been studied previously, the mechanical microenvironment that drives remodeling events in the myofibers and the extracellular matrix (ECM) remains largely unexplored. We hypothesize that multiscale computational modeling of the heart, linking cellular-scale events to tissue-scale behavior, can improve our understanding of cardiac remodeling and better identify therapeutic targets. We have developed a high-fidelity microanatomically realistic model of ventricular myocardium, combining confocal microscopy techniques, soft tissue mechanics, and finite element modeling. We match our microanatomical model to the tissue-scale mechanical response of previous studies on biaxial properties of RVFW and examine the local myofiber-ECM interactions to study fiber-specific mechanics at the scale of individual myofibers. Through this approach, we determine that the interactions occurring at the tissue scale can be accounted for by accurately representing the geometry of the myofiber-collagen arrangement at the micro scale. Ultimately, models such as these can be used to link cellular-level adaptations with organ-level adaptations to lead to the development of patient-specific treatments for PAH. © 2021, Springer Nature Switzerland AG.

关键词： Tissue

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A Role modeling Based Approach for Cyber Threat Analysis 1

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7th international conference on Model-Driven Engineering and Software Development (MODELSWARD)

作者： Drouot, Bastien Golra, Fahad R. Champeau, Joel ENSTA Bretagne Lab STICC UMR6285 Brest France

ISBN: (数字)9783030378738

ISBN: (纸本)9783030378738;9783030378721

Using DSMLs, the domain experts can express their models in a language that is relevant to the problem area. However, it also adds the complexity of interoperability between these languages, specially for application areas that encompass multiple domains. One such application area, Cyber Threat Analysis (CTA), is at the intersection of various domains that can evolve independently: system modeling, attacker modeling and threat description. In this paper, we present an approach to address CTA interoperability issues based on role modeling. The proposed language provides a mechanism to define shared semantics between DSMLs relative to the CTA. The concept of a role is central to our approach, presented as Role4All framework. These roles allow us to federate different DSMLs to generate an attacker's viewpoint. Our approach is illustrated using a case study on the development of an attacker's viewpoint based on the federation of multiple domain models. Interoperability between the domain models is crucial to apply dedicated algorithms and interpretations on the attacker's viewpoint. We used this attacker viewpoint to simulate attacks on a system for security analysis.

关键词： Model federation Role modeling DSML interoperability Cyber threat analysis simulation

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A framework for the extension of devs with sensor fusion capabilities

A framework for the extension of devs with sensor fusion cap...

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2020 Spring simulation Multiconference, SpringSim 2020

作者： Boi-Ukeme, Joseph Wainer, Gabriel Department of Systems and Computer Engineering Carleton University 1125 Colonel By Drive OttawaON Canada

ISBN: (纸本)9781713812883

Sensor fusion is a technique used to combine sensor data and improve the description of the physical property measured by these sensors. Sensors working alone could provide data that is erroneous, incomplete and uncertain. Several algorithms have been developed for sensor fusion, some of which are complex to understand and difficult to implement. The extensive list of algorithms often leaves designers confused about what choices to make as regards which algorithm is best and this discourages them from implementing sensor fusion. In this paper, we propose a generic sensor fusion framework to facilitate the implementation of sensor fusion algorithms using the Discrete-Event modeling of Embedded Systems (DEMES) which is a model-based development methodology for cyber-physical systems based on discrete-event systems specifications (DEVS). © 2020 Society for modeling & simulation international (SCS)

关键词： Embedded systems

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