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3rd Annual International Workshop on Active Middleware Services, AMS 2001

作者： Zeigler, B.P. Sarjoughian, H.S. Park, Sunwoo Nutaro, J.J. Lee, J.S. Cho, Y.K. Arizona Center for Integrative Modeling and Simulation Electrical and Computer Engineering Department University of Arizona TucsonAZ85721-0104 United States Raytheon Missile Systems TucsonAZ United States

ISBN: (纸本)0769515282

This paper discusses a concept of DEVS middleware that would provide a set of services for constructing discrete event models and executing them in simulation or in real-time. Although generic middleware such as CORBA and MPI supports simulation and simulation-oriented middleware such as High Level Architecture Runtime Infrastructure exists, there are many issues that either not addressed at all or have been inadequately addressed in existing systems. DEVS Middleware would improve modeling and simulations due to the beneficial formal properties of DEVS, enhance interoperability among components adhering to the DEVS protocol, and reduce programming complexity by hiding lower level simulation and execution details. The DEVS Middleware concept includes components for model construction and for mapping models onto simulators or real-time execution engines to support the novel concept of "distributed programming by modeling." This paper discusses several sub-layers that have been identified within the overall DEVS middleware concept, existing work that can be brought to bear on developing these layers and the integration needed to create a widely accepted standard. © 2001 IEEE.

关键词： Middleware

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APT Adversarial Defence Mechanism for Industrial IoT Enabled Cyber-Physical System

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IEEE Access 2023年 11卷 74000-74020页

作者： Javed, Safdar Hussain Ahmad, Maaz Bin Asif, Muhammad Akram, Waseem Mahmood, Khalid Das, Ashok Kumar Shetty, Sachin College of Computing and Information Sciences Karachi75190 Pakistan Lahore Garrison University Department of Computer Science Lahore54810 Pakistan National Yunlin University of Science and Technology Graduate School of Intelligent Data Science Douliu64002 Taiwan International Institute of Information Technology at Hyderabad Center for Security Theory and Algorithmic Research Hyderabad500032 India Old Dominion University Simulation and Visualization Engineering Virginia Modeling Analysis and Simulation Center Department of Modeling SuffolkVA23435 United States Old Dominion University Center for Cybersecurity Education and Research SuffolkVA23435 United States

The objective of Advanced Persistent Threat (APT) attacks is to exploit Cyber-Physical Systems (CPSs) in combination with the Industrial Internet of Things (I-IoT) by using fast attack methods. Machine learning (ML) techniques have shown potential in identifying APT attacks in autonomous and malware detection systems. However, detecting hidden APT attacks in the I-IoT-enabled CPS domain and achieving real-time accuracy in detection present significant challenges for these techniques. To overcome these issues, a new approach is suggested that is based on the Graph Attention Network (GAN), a multi-dimensional algorithm that captures behavioral features along with the relevant information that other methods do not deliver. This approach utilizes masked self-attentional layers to address the limitations of prior Deep Learning (DL) methods that rely on convolutions. Two datasets, the DAPT2020 malware, and Edge I-IoT datasets are used to evaluate the approach, and it attains the highest detection accuracy of 96.97% and 95.97%, with prediction time of 20.56 seconds and 21.65 seconds, respectively. The GAN approach is compared to conventional ML algorithms, and simulation results demonstrate a significant performance improvement over these algorithms in the I-IoT-enabled CPS realm. © 2013 IEEE.

关键词： Real time systems

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The relationship between software architectures and visual programming languages

The relationship between software architectures and visual p...

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Grand Challenges in modeling and simulation Symposium 2008, GCMS 2008, Part of the 2008 Summer simulation Multiconference, SummerSim 2008

作者： Manzanares, Adam Drew Hamilton Jr., J.A. Qin, Xiao Department of Computer Science and Software Engineering Auburn University Auburn AL 36849 United States Auburn's Information Assurance Center United States Society for Modeling and Simulation International United States

ISBN: (纸本)9781622763603

Software architecture and visual programming languages both share a common goal of abstraction. Software architecture tries to present a high level over view of the over all system design. This high level view can be used to increase the security, reusability, and understandability of the overall system. Visual programming languages were introduced to allow a programmer to manipulate visual objects to create programs instead of using only text. These higherlevel languages are an abstraction of information contained in textual languages. This work aims to show the value of using a visual programming language with software architecture documents to produce systems. The marriage of these two technologies can produce a system that is closer to software architecture design as compared to using textual based programming languages. The importance of connectors and the impacts visual programming languages can have on connectors is discussed. The security, understandability, and reusability impacts are studied to understand the benefits visual programming languages can have on translating software architecture into the final product. © 2008 simulation COUNCILS, INC.

关键词： Reusability

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A disc-based decomposition alogrithm with optimal load balancing for n-body simulations

A disc-based decomposition alogrithm with optimal load balan...

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2012 SC Companion: High Performance Computing, Networking Storage and Analysis, SCC 2012

作者： Gothandaraman, Akila Nason, Thomas Warren, Lee Center for Simulation and Modeling University of Pittsburgh PA United States Department of Electrical and Computer Engineering University of Pittsburgh PA United States Department of Chemistry College of New Rochelle NY United States

ISBN: (纸本)9780769549569

We propose a novel disc-based data decomposition algorithm for N-body simulations and compare its performance against a cyclic decomposition algorithm. We implement the data decomposition algorithms towards the calculation of three-body interactions in the Stillinger-Weber potential for a system of water molecules. The performance is studied in terms of load balance behavior and speedup from the MPI implementations of the two algorithms. We are also currently working on a performance study of the disc-based decomposition algorithm on graphics processing units (GPUs). © 2012 IEEE.

关键词： Program processors

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A hybrid web-based toolkit for human modeling

A hybrid web-based toolkit for human modeling

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1997 Scientific Visualization Conference, dagstuhl 1997

作者： Bender, M. Klein, R. Ebert, A. Rodrian, H. Computer Graphics Group Department of Computer Science University of Kaiserslautern Germany Intelligent Visualization and Simulation Systems German Research Center for Artificial Intelligence GmbH Germany Human Modeling Department TECMATH GmbH and Co. KG Kaiserslautern Germany

ISBN: (纸本)0769505031

Modern web-based Scientific Visualization applications try to overcome common limitations imposed by limited internet bandwidth, server bottlenecks or network latency. A further aspect is the desire to gain platform independence by solely using instruments which are platform independent by conception: the programming language Java, the Virtual Reality modeling Language (VRML), or the 3D API *** present a prototype of a hybrid web-based Scientific Visualization system which makes use of the increasing computational power of modern desktop workstations and personal computers on the client side, and the superior performance provided by a powerful machine on the server side. In order to achieve high interaction rates and to balance computational load the user can dynamically assign selected tasks to his client or to the *** the scientific field of human modeling we have implemented a hybrid web-based toolkit for the modeling of human muscles and skin. Our application allows the on-line generation and manipulation of three-dimensional implicit muscle models in a heterogeneous network and it offers various parameters to adjust computation and response time versus rendering quality. © 1997 IEEE computer Society.

关键词： Heterogeneous networks

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DEVS/RMI-A dynamic and flexible distributed simulation environment

DEVS/RMI-A dynamic and flexible distributed simulation envir...

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2nd DEVS Integrative M and S Symposium, DEVS 2006, Part of the 2006 Spring simulation Multiconference, SpringSim 2006

作者： Zhang, Ming Zeigler, Bernard P. Hammonds, Phillip Raj, Jammalamadaka Department of Electrical and Computer Engineering Arizona Center of Integrative Modeling and Simulation University of Arizona Tucson AZ 85721 United States Joint Interoperability Test Command Fort Huachuca AZ United States

With the increased demand for distributed simulation environments to support large-scale modeling and simulation applications, much research has focused 011 developing a software environment to support simulation across a heterogeneous computing networks. I11 this paper, a new implementation of the DEVS formalism called DEVS/RMI system is presented as a natively distributed simulation system based 011 standard implementation of DEVS. Our objective is to distribute simulation entities across network nodes seamlessly without any of the commonly used middleware. The proposed DEVS/RMI system is also built to support autonomous, dynamic and adaptive reconfiguration of simulations during run-time. In general, the DEVS/RMI approach is well suited for complex, computationally intensive simulation applications, and it provides an flexible and efficient software development environment for rapid development of simulation applications in a heterogeneous network environment when compared with other more traditional high performance simulation packages using MPI or PVM. A test case of a large-scale dynamic 2D-Cell space model is discussed and presented in this paper.

关键词： Middleware

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Experimental evaluation of the effect of varying levels of crowd behavior fidelity on the outcome of certain military scenarios

Experimental evaluation of the effect of varying levels of c...

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2005 Spring simulation Interoperability Workshop, SIW 2005

作者： Hunter, Kelly R. Petty, Mikel D. McKenzie, Frederic D. Virginia Modeling Analysis and Simulation Center Old Dominion University NorfolkVA23529 United States Department of Electrical and Computer Engineering Old Dominion University NorfolkVA23529 United States

Crowds of non-combatants play a large and increasingly recognized role in modern military operations, and often create substantial difficulties for the combatant forces involved. However, in spite of their potential significance, realistic models of crowds are essentially absent from current military simulations. We have developed a crowd simulation that is interoperable with existing military simulations via HLA and has a credible psychological basis for the cognitive model it used to generate crowd behavior. Though the need for crowd modeling in military simulation has been widely recognized, it is not clear how much fidelity crowd models must have to be effective. The implemented Crowd Federate was used to conduct an experiment to investigate the level of crowd behavior fidelity needed to significantly affect the outcome and utility of a military simulatio. Six levels of behavior fidelity were identified and implemented using different configurations of the crowd federate. Multiple trials for the first five levels were executed using a historical reference scenario. Data regarding several measures of performance were gathered, including mission success, mission time, casualties, and perceived realism. Unfortunately, anomalous events in the military simulation federated with the Crowd Federate confounded the results of the experiment, preventing a fine assessment of the effect of the different levels of behavior fidelity. However, the trials were clearly more realistic when the simulated crowd was present. © 2005 The MITRE Corporation. All rights reserved.

关键词： Military operations

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modeling the Tertiary Structure of a Multi-domain Protein: Structure Prediction of Multi-domain Proteins 18

Modeling the Tertiary Structure of a Multi-domain Protein: S...

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9th ACM International Conference on Bioinformatics, Computational Biology, and Health Informatics, ACM-BCB 2018

作者： Almsned, Fahad Gogovi, Gideon Bracci, Nicole Kehn-Hall, Kylene Blaisten-Barojas, Estela Shehu, Amarda Krasnow Institute for Advanced School of Systems Biology George Mason University United States Center for Simulation and Modeling Dept of Computational and Data Sciences George Mason University United States National Center for Biodefense and Infectious Diseases School of Systems Biology George Mason University United States Dept of Computer Science Dept of Bioengineering Center for Simulation and Modeling School of Systems Biology George Mason University United States

ISBN: (纸本)9781450357944

Due to the central role that tertiary structure plays in determining protein function, resolving protein tertiary structures is an integral research thrust in both wet and dry laboratories. Dry laboratories have primarily focused on small- to medium-size proteins. However, proteins central to human biology and human health are often quite complex, containing multiple domains and consisting of thou- sands of amino acids. Such proteins are challenging for various reasons, including the inability to crystallize. We present a case study of structure determination for the Rift Valley fever virus L-protein, a a large, multi-domain protein with currently no available tertiary structure. We employ this case study as an emerging paradigm and demonstrate how to leverage the rich and diverse landscape of bioinformatics tools for building tertiary structure models for multi-domain proteins with thousands of amino acids. © 2018 ACM.

关键词： Proteins

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The impact of risks on the deliveries of a logging company: simulation model case study 19th

The impact of risks on the deliveries of a logging company: ...

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19th International Conference on Harbor, Maritime and Multimodal Logistics modeling and simulation, HMS 2017

作者： Mensah, Peter Merkuryev, Yuri Klavins, Eric Longo, Francesco Riga Technical University Department of Modelling and Simulation 1 Kalku Street RigaLV-1658 Latvia Riga Technical University Department of Computer Networks and System Technologies Latvia Modeling and Simulation Center University of Calabria Via P. Bucci Rende87036 Italy

ISBN: (纸本)9781510847675

The supply chain today is vulnerable to risks that might affect the flow of materials, information and money anywhere between its upper and lower levels that could yield to a drastic loss in productivity, profitability as well as competitive advantages. Hence, it is vital for organizations to be agile and flexible enough to combat any form of risks that could be a threat to their success especially in deliveries. This paper therefore uses a case study approach to study and portray the effect of risks on the deliveries of a logging company. A simulation model is developed to represent the delivery process whereby the impact of the risks is discussed to raise awareness of uncertainties.

关键词： Supply chains

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Building a hybrid DEVS and GRASS model using a composable cellular automaton

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International Journal of modeling, simulation, and Scientific Computing 2016年第1期7卷 62-92页

作者： Gary R.Mayer Hessam S.Sarjoughian Department of Computer Science Southern Illinois University Edwardsville 61 Circle Drive EdwardsvilleIllinois 62026USA Arizona Center for Integrative Modeling&Simulation School of Computing Informaticsand Decision Systems Engineering Arizona State University699 South Mill Avenue TempeArizona 85281USA

modeling and simulation is pervasive throughout many different *** computing technology has provided more capability,the systems being modeled and simulated have grown larger and more *** times,these large systems are managed as interacting *** it is necessary for the simulation to allow disparate subsystems to maintain their independence,then a hybrid model of the subsystems should be ***,to ease the burden of verification and validation of simulation results,a proven system theoretical modeling specification should be ***,many communities have already adopted nonsystem theoretical software solutions and established a group of domain experts familiar with these *** paper provides two things:a formal approach to building a hybrid model,and a discussion of how to incorporate a nonsystem theoretical software implementation into a proven *** first is done through the implementation of a Knowledge Interchange Broker(KIB)as an Interaction Model(IM).The second is accomplished by exemplifying the use of the IM in an agent-environment hybrid *** the hybrid model,the agent is implemented in the Discrete-event System(DEVS)specification and the environment is implemented in the Geographical Resources Analysis Support System(GRASS)using a Composable Cellular Automaton(CCA)*** concept has been successfully applied to both example models and an interdisciplinary research project where the interactions between human activities and landscape processes are studied.

关键词： Multi-formalism modeling hybrid simulation composability agent cellular automata

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