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TY - GEN. T1 - Teaching the Structure and Dynamics of Big Complex Systems through Computer Simulation: Course Design Delivery and Evaluation. AU - Blacklow, Marcus. AU - Hattie, J.. PY - 1992. Y1 - 1992. M3 - Conference paper. SP - 184. EP - 192. BT - Not available. CY - University of Queensland. T2 - Teaching the Structure and Dynamics of Big Complex Systems through Computer Simulation: Course Design Delivery and Evaluation. Y2 - 1 January 1992. ER - ...
F. Rattay and P. Lutter, Speech sound representation in the auditory nerve: Computer simulation studies on inner ear mechanisms, ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK, vol. 77, 1997, pp. 935-943 ...
TY - JOUR. T1 - Non-linear response and hydrogen bond dynamics for electron solvation in methanol. AU - Turi, László. AU - Mináry, Péter. AU - Rossky, Peter J.. PY - 2000/1/21. Y1 - 2000/1/21. N2 - Non-equilibrium and equilibrium adiabatic mixed quantum-classical molecular dynamics computer simulations of the solvation dynamics of an excess electron in methanol are reported. We develop the connection between the multiple time scales reflected in solvent response and individual physical phenomena, such as the radial collapse of the electron and structural relaxation of the hydrogen-bonding network of the solvent. The significant role of the latter aspect appears responsible for the breakdown of the linear response approximation for the relaxation of the adiabatic ground state energy of the excess electron.. AB - Non-equilibrium and equilibrium adiabatic mixed quantum-classical molecular dynamics computer simulations of the solvation dynamics of an excess electron in methanol are reported. We ...
The present thesis reports computer simulation studies of several phase transition related phenomena in a range of soft-condensed matter systems. A coherent unifying theme of the thesis is the understanding of dynamics of phase transitions through free energy calculations using recently developed efficient non-Boltzmann sampling methods. Based on the system/phenomena of interest, the thesis has been classified into four major parts: I. Isotropic-nematic (IN) phase transition in liquid crystals. II. Nucleation phenomena in gas-liquid transition with particular emphasis on the systems close to the spinodal curve. III. Collapse transition in linear hydrocarbon (n-alkane) chains for a varying range of length, solvent and temperature. IV. Crystallization of unbranched polymer chains in dilute solution, with particular emphasis on the temperature dependent crossover between the rod-like crystalline state and spherical molten globule state. The thesis has been further divided into ten chapters running ...
Numerous hypotheses have been proposed to account for the nature and distribution of tabular uranium and vanadium-uranium deposits of the Colorado Plateau. In one of these hypotheses it is suggested that the deposits resulted from geochemical reactions at the interface between a relatively stagnant groundwater solution and a dynamic, ore-carrying groundwater solution which permeated the host sandstones (Shawe, 1956; Granger, et al., 1961; Granger, 1968, 1976; and Granger and Warren, 1979). The study described here was designed to investigate some aspects of this hypothesis, particularly the nature of fluid flow in sands and sandstones, the nature and distribution of deposits, and the relations between the deposits and the host sandstones. The investigation, which was divided into three phases, involved physical model, field, and computer simulation studies. During the initial phase of the investigation, physical model studies were conducted in porous-media flumes. These studies verified the fact that
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A needs analysis of the computer simulation area within ABB is performed, to create input for a coming strategy formulation. The needs analysis is performed in two parts, where part 1 is presented in this report.. Needs are gathered through six qualitative interviews with respondents from different stakeholder groups from ABB Corporate Reseach Centers (CRCs); Simulation expert, technical manager and Program Manager. The target population of the study is mainly the Business Units (BUs). Based on the needs gathering, three different approaches of using computer simulations within ABB are found:. · Simulation support: CRC simulation experts perform simulations on the request of BU, and deliver the result back.. · Simulation tools: CRC simulation experts develop and deliver a simulation tool to BU, enabling the BU side to perform the simulations on their own.. · CAD-embedded simulation: BU uses CAD-embedded simulation, effectively integrating the simulations into the design phase, enabling the ...
Offered by 캘리포니아 대학교 데이비스 캠퍼스. Big data and artificial intelligence get most of the press about computational social science, but maybe the most complex aspect of it refers to using computational tools to explore and develop social science theory. This course shows how computer simulations are being used to explore the realm of what is theoretically possible. Computer simulations allow us to study why societies are the way they are, and to dream about the world we would like to live in. This can be as intuitive as playing a video game. Much like the well-known video game SimCity is used to build and manage an artificial city, we use agent-based models to grow and study artificial societies. Without hurting anyone in the real world, computer simulations allow us explore how to make the world a better place. We play hands-on with several practical computer simulation models and explore how we can combine hypothetical models with real world data. Finally, you will program a
Deborah Haar My dissertation centers on the epistemology of computer simulations and modeling. Examining how computer simulation models are built in cases where there is important empirical information lacking, I argue in my first paper that computer simulation modeling is ampliative. That these computer simulation models are built with computer simulations weighs on the argument…
Process of building a computer model, and the interplay between experiment, simulation, and theory. Computer simulations reproduce the behavior of a system using a mathematical model . Computer simulations have become a useful tool for the mathematical modeling of many natural systems in physics ( computational physics ), astrophysics , climatology , chemistry and biology , human systems in economics , psychology , social science , and engineering . Simulation of a system is represented as the running of the system's model. It can be used to explore and gain new insights into new technology and to estimate the performance of systems too complex for analytical solutions . Computer simulations are computer programs that can be either small, running almost instantly on small devices, or large-scale programs that run for hours or days on network-based groups of computers. The scale of events being simulated by computer simulations has far exceeded anything possible (or perhaps even imaginable) using
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As a philosophical exercise not much turns on whether we classify computer simulations (CS) as experiments, a form of modeling, or some type of hybrid activity that straddles both camps. Since they typically exhibit features from all three categories it might seem a waste of time debating the distinctions required for a fine grained classification. What is important however is how we characterise the outputs of computer simulation since their epistemic status is the crucial feature in deciding what kind of knowledge computer simulations deliver. In this latter context the relationship to experiment and modelling takes on a new dimension, one that shows just how the results generated by some CS can qualify as a new type of experimental knowledge, rather than a hybrid of traditional forms of modelling and experiment. In order to document the relationship to models and experiments and illustrate both the novelty and epistemic dimension of CS results I want to focus on particular methodological ...
Nonlinear imaging of two phase-typed scatterers in super-Gaussian laser beams is modeled and its properties obtained by computer simulation are presented. The formations of hot images and second-order hot images are verified. It is found that the in-beam locations of hot images correspond to those of the scatterers, but that there can be only one second-order hot image, which is at the middle point between the in-beam locations of the scatterers. Interestingly, the image intensity can be suppressed and it increases in an oscillating manner with some regularity as the distance between the scatterers increases. Moreover, one more scatterer makes the effect of the B integral and that of the phase shift caused by scatterers quite different from the predictions for single- scatterer case. The variation trend of hot image intensity with the B integral is not in agreement with that described by the analytical result for the single-scatterer case. The variation of phase shift caused by the scatterers ...
Use of computer simulation method in resource management in healthcare; A study in outpatient clinics Simulation can be used to determine the work load of the health staff and the needs of system resources in healthcare. We performed a simulation study for outpatient clinics of an internal medicine department. The data are obtained from electronic health recording system (EHR) except for the duration of doctor examination. Data from 18,750 patients were used. We used different scenarios to determine the critical factors affecting patient queue size. We found that the number of doctors was the most important factor influencing the waiting duration and patients queue size. Other factors affecting the system performance were the mean examination time and the revolving fund processes. In conclusion, this study shows that simulation is a possible method to determine critical factors for service performance.. ...
PREFACE xiii. CHAPTER 1 DYNAMIC-SYSTEM MODELS AND SIMULATION 1. SIMULATION IS EXPERIMENTATION WITH MODELS 1. 1-1 Simulation and Computer Programs 1. 1-2 Dynamic-System Models 2. 1-3 Experiment Protocols Define Simulation Studies 3. 1-4 Simulation Software 4. 1-5 Fast Simulation Program for Interactive Modeling 5. ANATOMY OF A SIMULATION RUN 8. 1-6 Dynamic-System Time Histories Are Sampled Periodically 8. 1-7 Numerical Integration 10. 1-8 Sampling Times and Integration Steps 11. 1-9 Sorting Defined-Variable Assignments 12. SIMPLE APPLICATION PROGRAMS 12. 1-10 Oscillators and Computer Displays 12. 1-11 Space-Vehicle Orbit Simulation with Variable-Step Integration 15. 1-12 Population-Dynamics Model 17. 1-13 Splicing Multiple Simulation Runs: Billiard-Ball Simulation 17. INRODUCTION TO CONTROL-SYSTEM SIMULATION 21. 1-14 Electrical Servomechanism with Motor-Field Delay and Saturation 21. 1-15 Control-System Frequency Response 23. 1-16 Simulation of a Simple Guided Missile 24. STOP AND LOOK 28. 1-17 ...
Now in a second edition, this book teaches physical concepts using computer simulation. The text illustrates structured programming techniques and encourages students to develop good programming habits in the context of doing physics. Designed for college students at all levels, An Introduction to Computer Simulation Methods, uses True Basic, a user-friendly, accessible computer language. As an introduction to the use of computer simulations, this book is also appropriate for students majoring in fields other than physics.Gould, Harvey is the author of Introduction to Computer Simulation Methods Applications to Physical Systems, published 1995 under ISBN 9780201506044 and ISBN 0201506041. [read more] ...
An essential step in the analysis of agent-based simulation is sensitivity analysis, which namely examines the dependency of parameter values on simulation results. Although a number of approaches have been proposed for sensitivity analysis, they still ha
Results of our studies reveal the vast potential of integrating computational simulation tools into formal learning experiences. Outcomes of our studies include: a) a set of learning outcomes associated with instructors goals for incorporating simulation tools into their teaching and b) a framework that identifies major benefits on students learning and that suggest ways to address their difficulties when using or building computational simulation tools.
Disponible ahora en Iberlibro.com - Gastos de envío gratis - ISBN: 9787811302363 - paperback - Condición del libro: New - Language:Paperback.Paperback Pages Number: 215 in Publisher: Jiangsu University Press; 1st edition (September 1. 2011). Computer simulation technology and its application in agricultural engineering an overview of the principles of computer simulation. combined with Jiangsu University Agricultural Engineering Research Institute in recent years the use of computer simulation technology. agricultural engineering research and design examples and detailed MATLAB simulation on ADAMS rigid body mot.
CitaciónMontañola, C., Gilabert, JF, Casanovas, J., Prats, C., Lopez, D., Valls, J., Cardona, P.J., Vilaplana, C. Modeling tuberculosis in Barcelona. A solution to speed-up agent-based simulations. A: Winter Simulation Conference. Proceedings of the 2015 Winter Simulation Conference. Huntington Beach, California: 2015, p. 1295-1306 ...
When developing a model for an Agent-Based Simulation (ABS) it is very important to select the updatestrategy which reflects the semantics of the model as simulation results can vary vastly across different update-strategies. This awareness, we claim, is still underdeveloped in the majority of the field of ABS. In this paper we propose a new terminology to classify update strategies and then identify different strategies using this terminology. This will allow implementers and researchers in this field to use a general terminology, removing ambiguities when discussing ABS and their models. We will give results of simulating a discrete and a continuous game using our update-strategies and show that in the case of the discrete game only one specific strategy seems to be able to produce its emergent patterns whereas the pattern of the continuous game seems to be robust under varying update-strategies. ...
Tascini AS, Wang S, Seddon JM, Bresme F, Chen Ret al., 2020, Fats love-hate relationships: a molecular dynamics simulation and hands-on experiment outreach activity to introduce the amphiphilic nature and biological functions of lipids to young students and the general public, Journal of Chemical Education, Vol: 97, Pages: 1360-1367, ISSN: 0021-9584 Lipids are fundamental components of biological organisms and have important applications in the pharmaceutical, food, and cosmetics industries. Thus, it is important that young students and the general public properly understand the basic properties of lipids and how these relate to their biological and industrial roles. Here, we use molecular dynamics computer simulations and a simple, safe, and inexpensive popular hands-on activity, to communicate to participants why and how lipid molecules play a fundamental role in all living organisms and in our bodies. The activity is called Fats Love-Hate Relationships, to highlight how the different ...
The multiple reciprocity boundary element method (MRBEM) is applied to the modeling of Photonic Crystal Fiber (PCF). With the MRBEM, the Helmholtz equation is converted into an integral equation using a series of higher order fundamental solutions of the Laplace equation. It is a much more efficient method to analyze the dispersion, birefringence and nonlinearity properties of PCFs compared with the conventional direct boundary element method (BEM).. ©2004 Optical Society of America. Full Article , PDF Article ...
This paper discusses a computer simulation model, designed specifically for the analysis and evaluation of military mobile radio communication systems in t
In stand-alone simulations, objects come into (and go out of) existence with the passage of simulation time and the disposition of these objects is solely the purview of the simulation. When acting within a confederation, the simulation-object relationship is more complicated. The simulation-object ownership property is dynamic, i.e. during its lifetime an object may be owned by more than one simulation. In fact, for any value of simulation time, several simulations may own different attributes of a given object. By convention, a simulation owns an object if it owns the identifying attribute of the object. Owning an objects attribute means that a simulation is responsible for calculating and reporting changes to the value of the attribute. Objects not owned by a particular simulation but within the area of perception for the simulation are known as ghosts. Ghosts are local copies of objects owned by other simulations. When a simulation creates an object, it reports this fact to the ...
Computer simulations of condensed phases and biochemical systems have lead to profound new insight into molecular-scale phenomena occurring in these complex systems. Many processes that occur in liquids, soft materials, and biochemical systems however occur over length and time scales that are well beyond the current capabilities of atomic-level simulations. In the field of polymers, there are many simulation techniques and models that span a range from the atomistic scale to the continuum. In recent years, much research has been focused on linking models of different length scales, especially from detailed, fully atomistic to mesoscopic scales and back. A common way of addressing this issue is to develop coarse-grained (CG) models from full-atomistic simulations by merging groups of chemically connected atoms into superatoms. This PhD thesis describes new developments in the field of CG simulations of polymers. In addition to CG simulations, atomistic molecular dynamics calculations are ...
Computer simulations of condensed phases and biochemical systems have lead to profound new insight into molecular-scale phenomena occurring in these complex systems. Many processes that occur in liquids, soft materials, and biochemical systems however occur over length and time scales that are well beyond the current capabilities of atomic-level simulations. In the field of polymers, there are many simulation techniques and models that span a range from the atomistic scale to the continuum. In recent years, much research has been focused on linking models of different length scales, especially from detailed, fully atomistic to mesoscopic scales and back. A common way of addressing this issue is to develop coarse-grained (CG) models from full-atomistic simulations by merging groups of chemically connected atoms into superatoms. This PhD thesis describes new developments in the field of CG simulations of polymers. In addition to CG simulations, atomistic molecular dynamics calculations are ...
TY - JOUR. T1 - Dynamic rupture propagation on fault planes with explicit representation of short branches. AU - Ma, Xiao. AU - Elbanna, A.. PY - 2019/10/1. Y1 - 2019/10/1. N2 - An active fault zone is home to a plethora of complex structural and geometric features that are expected to affect earthquake rupture nucleation, propagation, and arrest, as well as interseismic deformation. Simulations of these complexities have been largely done using continuum plasticity or scalar damage theories. In this paper, we use a highly efficient novel hybrid finite element-spectral boundary integral equation scheme to investigate the dynamics of fault zones with small scale pre-existing branches as a first step towards explicit representation of anisotropic damage features in fault zones. The hybrid computational scheme enables exact near-field truncation of the elastodynamic field allowing us to use high resolution finite element discretization in a narrow region surrounding the fault zone that encompasses ...
|p style=text-indent:20px;|In this paper, we present a multiscale model reduction framework within Generalized Multiscale Finite Element Method (GMsFEM) for nonlinear elliptic problems. We consider an exemplary problem, which consists of nonlinear p-Laplacian with heterogeneous coefficients. The main challenging feature of this problem is that local subgrid models are nonlinear involving the gradient of the solution (e.g., in the case of scale separation, when using homogenization). Our main objective is to develop snapshots and local spectral problems, which are the main ingredients of GMsFEM, for these problems. Our contributions can be summarized as follows. (1) We re-cast the multiscale model reduction problem onto the boundaries of coarse cells. This is important and allows capturing separable scales as discussed. (2) We introduce nonlinear eigenvalue problems in the snapshot space for these nonlinear harmonic functions. (3) We present convergence analysis and numerical results, which show that
Often in simulation procedures are not proposed unless they are supported by a strong mathematical background. As will be shown in this thesis, this approach does not always give good results when the procedures are applied to complex simulation models, especially on output analysis. For this reason we have used an empirical rather than a theoretical approach for dealing with some of the output problems of simulation. The research carried out has dealt mainly with queuing networks. The first problem we address is that of the identification of possible unstable queues. We also deal with the problem of the identification of queues that may require a long simulation run length to reach the steady state. The method of replications is used for the estimation of terminating and sometimes of steady state parameters. In this thesis we study the relationship that exists between the number of replications used in the simulation and the simulation run length required for the parameter being estimated to ...
The role of computer simulation in the automobile industry is changing because of the increasing feasibility of meeting the challenges it faces. The increase in feasibility is the result of increases in computer equipment capability and decreases in equipment costs. In particular, the use of computer simulation in accident reconstruction is increasing rapidly. Key issues for computer simulation in the accident reconstruction industry are credibility, cost, software availability, and visualization of both the simulation process and results. Visualization is a key issue because most reconstruction is in support of litigation so that results must be made as clear and easy to understand as is possible ...
Tumor growth from a single transformed cancer cell up to a clinically apparent mass spans many spatial and temporal orders of magnitude. Implementation of cellular automata simulations of such tumor growth can be straightforward but computing performance often counterbalances simplicity. Computationally convenient simulation times can be achieved by choosing appropriate data structures, memory and cell handling as well as domain setup. We propose a cellular automaton model of tumor growth with a domain that expands dynamically as the tumor population increases. We discuss memory access, data structures and implementation techniques that yield high-performance multi-scale Monte Carlo simulations of tumor growth. We discuss tumor properties that favor the proposed high-performance design and present simulation results of the tumor growth model. We estimate to which parameters the model is the most sensitive, and show that tumor volume depends on a number of parameters in a non-monotonic
The performance of an imaging technique relying on the spatial correlation of laser-speckle intensity measurements is evaluated on the basis of theoretical analysis, computer simulation, and laboratory results. A theoretical expression for the signal-to-noise ratio of the recovered imaging targets power spectrum is used to estimate the imaging performance expected in the computer simulation and laboratory experiment. Power-spectrum estimates for an imaging target, obtained both in the laboratory and through simulation, are compared with the theoretical results and with the true spectrum of the target. Images recovered from the simulation data and the laboratory data are also compared. Our results suggest that the signal-to-noise ratio expression provides an accurate means for estimating the recoverable frequency content of a simple target.. © 1991 Optical Society of America. Full Article , PDF Article ...
(Phys.org) -An international team of researchers working together to discover how, when and why birds have evolved to stand in a crouching position, have come to the conclusion that it was due much more to the growth of forelimbs than a reduction in size of the tail. The team describes in their paper published in the journal Nature, how they built computer simulations to recreate in a virtual sense, the evolution process that led to the crouching position and possibly the evolution of flight.
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Background: Health care-associated infections (HAIs) are a global health burden because of their significant impact on patient health and health care systems. Mechanistic simulation modeling that captures the dynamics between patients, pathogens, and the environment is increasingly being used to improve understanding of epidemiological patterns of HAIs and to facilitate decisions on infection prevention and control (IPC). The purpose of this review is to present a systematic review to establish (1) how simulation models have been used to investigate HAIs and their mitigation and (2) how these models have evolved over time, as well as identify (3) gaps in their adoption and (4) useful directions for their future development. Methods: The review involved a systematic search and identification of studies using system dynamics, discrete event simulation, and agent-based model to study HAIs. Results: The complexity of simulation models developed for HAIs significantly increased but heavily ...
In this paper, we firstly study numerical methods for gas flow simulation in dual-continuum porous media. Typical methods for oil flow simulation in dual-continuum porous media cannot be used straightforward to this kind of simulation due to the artificial mass loss caused by the compressibility and the non-robustness caused by the non-linear source term. To avoid these two problems, corrected numerical methods are proposed using mass balance equations and local linearization of the non-linear source term. The improved numerical methods are successful for the computation of gas flow in the double-porosity double-permeability porous media. After this improvement, temporal advancement for each time step includes three fractional steps: (i) advance matrix pressure and fracture pressure using the typical computation; (ii) solve the mass balance equation system for mean pressures; (iii) correct pressures in (i) by mean pressures in (ii). Numerical results show that mass conservation of gas for the ...
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The biosimulation market is expected to reach USD 3.77 billion by 2024, according to a new study by Grand View Research, Inc. The unprecedented global shift in the adoption of unhealthy lifestyles is resulting in the high prevalence of chronic diseases, such as cancer and diabetes, is expected to drive the biosimulation market during the forecast period. In addition, the rising geriatric population base highly susceptible to acquire the aforementioned chronic diseases result in enhanced demand for highly efficacious pharmacological drugs. This high requirement of efficacious drugs can be effectively met at a faster rate through the incorporation of the in silico approach, thus creating a high potential for biosimulation market growth opportunities in the future. Furthermore, increasing drug resistance, high drug failure rate, and availability of limited drugs to treat several diseasessuch as AIDS, pneumonia, tuberculosis, and others indicate the indisputable requirement for the incorporation of ...
TY - JOUR. T1 - Computer simulation of polarization characteristics of channeling radiation for relativistic electrons. AU - Vyatkin, E. G.. AU - Pivovarov, Yu L.. AU - Vorobiev, S. A.. PY - 1986. Y1 - 1986. N2 - A computation method for the polarization characteristics of relativistic particle radiation in a crystal has been developed. This method is based on the computer simulation of particle trajectories. Formation of the total radiation spectrum and the Stokes parameters by averaging over the possible electron trajectories under planar channeling has been analyzed. A comparison with experimental data has been made.. AB - A computation method for the polarization characteristics of relativistic particle radiation in a crystal has been developed. This method is based on the computer simulation of particle trajectories. Formation of the total radiation spectrum and the Stokes parameters by averaging over the possible electron trajectories under planar channeling has been analyzed. A comparison ...
The purpose of this study was to investigate the effectiveness of using computer simulations as a pre-training activity to a hands-on lab to improve students understanding of induction topics in physics. The computer simulation activity was compared to an overview presentation. Conceptual understanding and spatial ability were measured. A two-group descriptive repeated measures design was implemented with a convenience sample of 35 community college physics students in the Bay Area. Participants were randomly assigned to a simulation group (n = 17) or a presentation group (n = 18). A 30-item spatial ability assessment was given to all participants one week before the day of the experiment. On the day of the experiment, the simulation group completed a 30-minute induction simulation activity while the presentation group received a 30-minute overview presentation. Both groups then completed a 90-minute hands-on lab. Before completing the simulation activity or receiving the overview presentation, an 18
We investigate the effects of interactive computer-based simulations which are presented prior to inquiry-based laboratory experiments on students conceptual understanding of mechanics, waves/optics, and thermal physics. In principle, the…
Under a grant from the United States Coast Guard. Underwriters Laboratories, Inc. Marine Department is conducting research to develop techniques for reconstructing collision accidents involving recreational boats. One of the purposes of this research is to identify technologies that have proven useful in other areas of accident reconstruction that may contribute significantly to the analysis of boat collisions. One of the technologies that has been recognized as providing much success in the past is that of computer simulation and computer aided accident reconstruction. This document outlines the necessary steps to be taken in which an attempt will be made to model a boat collision accident using state of the art computer simulation technology.*COMPUTERIZED SIMULATION
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We present a mathematical model and the computer simulation of Brownian motion of nanoparticle-bioprobe-polymer contrast agent complexes and their hybridization to immobilized targets. Our model is a stochastic counterpart of the continuous model presented in Ericson et al. Anal BioChem 317 (2003). We present results for the dependence of incubation times on the number of particles available for detection, and the geometric layout of the biochip. We derive values for the time necessary for a single particle hybridization within a prescribed probability error, as well as values for maximal hybridization concentration in many particle systems. We use both explicit computations with the Fokker-Planck equation for the probability distributions, and computer simulations for docking to targets. The parameters of our model can be derived from these theoretical values and fast Monte Carlo simulations. Knowledge of the proper incubation times in advance makes it possible to assess the feasibility of single
Competition of computer simulation industry is more and more fierce. In the meantime, merger and capital operation among large computer simulation corporations are ever frequent. And the outstanding computer simulation corporations in China are placing more importance on the research of the industry market, especially the depth research of industry development environment and customer demand.
The Mutcuf Computer Simulation Program (also known as Arse Mutcuf according to the Mutcuf One ) is a program the Mutcuf created in order to operate through a larger network of space bases. It appears as a holographic, pulsing gumdrop that floats above a chair in front of a signature Mutcuf...
Abstract: The main bottleneck when performing computational fluid dynamics (CFD) simulations of combustion systems is the computation and integration of the highly non-linear and stiff chemical source terms. In recent times, machine learning has emerged as a promising tool to accelerate combustion chemistry, involving the use of regression models to predict the chemical source terms as functions of the thermochemical state of the system. However, combustion is a highly nonlinear phenomenon, and this often leads to divergence from the true solution when the neural network representation of chemical kinetics is integrated in time. This is because these approaches minimize the error during training without guaranteeing successful integration with ordinary differential equation (ODE) solvers. In this work, a novel neural ODE approach to combustion modeling, ChemNODE, is developed to address this issue. The source terms predicted by the neural network are integrated during training, and by ...