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21st World Congress on Intelligent Transport Systems: Reinventing Transportation in Our Connected World, ITSWC 2014

作者： Ustun, Ilyas Alasaadi, Abdulla Nadeem, Tamer Cetin, Mecit Department of Modeling Simulation and Visualization Engineering Old Dominion University NorfolkVA23529 United States Department of Computer Science Old Dominion University NorfolkVA23529 United States Department of Civil Engineering Old Dominion University NorfolkVA23529 United States

Recent studies show that the market share of smartphones continues to grow with over 60 percent U.S. mobile subscribers owning smartphones as of December 2013. Smartphones have matured as a computing platform and are now equipped with multiple low-energy sensors including gyroscope, compass, accelerometer, proximity sensor, and ambient light sensor. Even though researchers used data from cell phones before, they relied on GPS which has the disadvantages of low accuracy in urban canyons and depleting the phone battery quickly. In this paper, we use accelerometer data for inferring whether a vehicle is in motion or stopping (e.g., at a traffic light). Pattern recognition models are developed and tested with data collected from the field. The results show that stops can be effectively identified, with a limited number of false alarms. The developed techniques can support various applications including traffic monitoring, signal timing optimization, and emission prediction.

关键词： Smartphones

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Traditional Vs gesture based UAV control

Traditional Vs gesture based UAV control

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AHFE International Conference on Human Factors in Robots and Unmanned Systems, 2018

作者： Sanders, Brian Vincenzi, Dennis Holley, Sam Shen, Yuzhong Department of Engineering and Technology Embry-Riddle Aeronautical University Worldwide Daytona Beach United States Department of Aeronautics Graduate Studies Embry-Riddle Aeronautical University Worldwide Daytona Beach United States Department of Modeling Simulation and Visualization Engineering Old Dominion University NorfolkVA United States

ISBN: (纸本)9783319943459

The purpose of this investigation was to assess user preferences for controlling an autonomous system. A comparison using a virtual environment (VE) was made between a joystick based, game controller and a gesture-based system using the leap motion controller. Command functions included basic flight maneuvers and switching between the operator and drone view. Comparisons were made between the control approaches using a representative quadcopter drone. The VE was designed to minimize the cognitive loading and focus on the flight control. It is a physics-based flight simulator built in Unity3D. Participants first spend time familiarizing themselves with the basic controls and vehicle response to command inputs. They then engaged in search missions. Data was gathered on time spent performing tasks, and post test interviews were conducted to uncover user preferences. Results indicate that while the gesture-based system has some benefits the joystick control is still preferred. © Springer International Publishing AG, part of Springer Nature 2019.

关键词： Virtual reality

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simulation Winter Conference

作者： Xiaotian Wang Andrew Collins Department of Modeling Simulation & Visualization Engineering Old Dominion University Norfolk VA USA Virginia Modeling Analysis & Simulation Center Old Dominion University Suffolk VA USA

ISBN: (纸本)9781479974870

Agent-based modeling (ABM) approach is used to reassess the Barabasi-Albert (BA) model, the classical algorithm used to describe the emergent mechanism of scale-free networks. This approach allows for the incorporation of agent heterogeneity which is rarely considered in BA model and its extended models. The authors argue that, in social networks, people's intention to connect is not only affected by popularity, but also strongly affected by the extent of similarity. The authors propose that in forming social networks, agents are constantly balancing between instrumental and intrinsic preferences. The proposed model allows for varying the weighting of instrumental and intrinsic preferences on the agents attachment choices. The authors also find that changing preferences of individuals can lead to significant deviations from power-law degree distribution. Given the importance of intrinsic consideration in social networking, the findings emerged from this study is conducive to future studies of social networks.

关键词： Social network services Barium Instruments Mathematical model Joining processes Analytical models Adaptation models

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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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Summer of simulation 1

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丛书名： simulation Foundations, Methods and Applications

1000年

作者： John Sokolowski Umut Durak Navonil Mustafee Andreas Tolk

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Convergence and resilience of the fine-grained parallel incomplete LU factorization for non-symmetric problems 18

Convergence and resilience of the fine-grained parallel inco...

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Proceedings of the High Performance Computing Symposium

作者： Evan Coleman Masha Sosonkina Dahlgren Division Naval Surface Warfare Center USA Department of Modeling Simulation and Visualization Engineering Old Dominion University USA

ISBN: (纸本)9781510860162

This paper presents an investigation into the convergence of the fine-grained parallel algorithm for computing an incomplete LU factorization for non-symmetric and indefinite matrices. The fine-grained parallel incomplete LU factorization is a nonlinear fixed point iteration and convergence has not been extensively studied for problems that are not symmetric positive definite. This work investigates the convergence of the algorithm for these more difficult problems and additionally investigates how the occurrence of a computing fault may impact the convergence of the algorithm for the problems being studied. The results obtained suggest that this class of problems presents challenges for the fine-grained parallel incomplete LU factorization (less than 30% of configurations converge naturally), and that while the occurrence of a fault can cause significant negative effects, the simple algorithmic change advocated here can completely ameliorate the effects of a fault.

关键词： fault tolerance

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modeling and simulation as a Service (MSaaS) for Education: Learning STEM Concepts through simulation Use and Building 15

Modeling and Simulation as a Service (MSaaS) for Education: ...

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simulation Multiconference

作者： Jose J. Padilla Anthony Barraco Ross J. Gore Enilda Romero-Hall Hamdi Kavak Saikou Y. Diallo Christopher J. Lynch Manasi Sheth-Chandra Virginia Modeling Analysis and Simulation Center Old Dominion University Department of Education The University of Tampa Modeling Simulation and Visualization Engineering Department Old Dominion University Center for Global Health Old Dominion University

ISBN: (纸本)9781510810594

Despite their proven advantages in science and engineering and their broad application in daily activities such as travel planning and financial planning, simulations are not widely utilized in education, particularly at the K-12 levels. One of the main reasons is that simulation use and simulation building is reserved for expert's use and remains out of the reach to a larger audience. One potential solution is modeling and simulation as a Service (MSaaS) for education in the form of a cloud-based simulation learning environments (CSLEs). CSLEs can provide worldwide access to many people for using and building simulations as well as exposing them to STEM concepts like data capture and probability. This paper presents a roadmap for CSLEs. The roadmap, six requirements for building CSLEs, draws on insights from 1) testing a cloud-based simulation environment for education purposes with students ranging from middle school to graduate school and 2) capturing longitudinal data of simulation-building activities. Insights from the students' testing of the environment suggest that using drawings as conceptual models facilitates the transition from a real-life system to abstraction into implementation of the model. Longitudinal data capture provides the potential for identifying simulation-building habits across levels of expertise and the development of metrics and models for simulation development.

关键词： MSaaS STEM Cloud-based simulation Learning Environments CSLE CLOUDES Stemming Scanning transmission electron microscopy Stems simulating Data capture Buildings Education building simulation Road maps modeling and simulation Students Middle school Simulated Environment drawing Conceptual Modelling

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Polarized beamforming for enhanced countermeasure of wireless jamming attacks

Polarized beamforming for enhanced countermeasure of wireles...

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IEEE International Conference on Performance, Computing and Communications (IPCCC)

作者： Ali Aldarraji Liang Hong Sachin Shetty Department of Electrical and Computer Engineering Tennessee State University Nashville Tennessee Department of Modeling Simulation and Visualization Engineering Old Dominion University Norfolk Virginia

ISBN: (纸本)9781509052530

Due to the open and shared nature, wireless communication systems are vulnerable to jamming attacks. Beamforming is a promising technique to counteract the impact of jamming attacks. However, when the location of the desired signal is close to that of the jamming signal, the performance of the traditional anti-jamming beamformer that uses isotropic antenna elements is significantly degraded due to the indistinguishable signals and interferences in the space domain. In this paper, an enhanced countermeasure method for jamming attacks has been proposed by using the polarized beamforming with a planar array. By integrating both polarization and space information, the proposed beamformer is able to suppress the interference that is close to the desired signal. The beamformer is designed using the Linearly Constrained Minimum Variance (LCMV) criterion. The analytical expression of the steering vectors is derived for far-field propagation. The Bit Error Rate (BER) performance of the proposed jamming defense system is examined. simulation results show a significant performance improvement of the proposed anti-jamming system even when the desired signals and interferences are coming from the same direction.

关键词： Jamming Array signal processing Interference Planar arrays Wireless communication Bit error rate

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modeling and simulation as a Service (MSaaS) for education: Learning STEM concepts through simulation use and building

Modeling and Simulation as a Service (MSaaS) for education: ...

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47th Summer Computer simulation Conference, SCSC 2015, Part of the 2015 Summer simulation Multi-Conference, SummerSim 2015

作者： Padilla, Jose J. Romero-Hall, Enilda Diallo, Saikou Y. Barraco, Anthony Kavak, Hamdi Lynch, Christopher J. Gore, Ross J. Sheth-Chandra, Manasi Virginia Modeling Analysis and Simulation Center Old Dominion University 1030 University Blvd. SuffolkVA United States Department of Education University of Tampa 401 W. Kennedy Blvd. Box: S TampaFL United States Modeling Simulation and Visualization Engineering Department Old Dominion University NorfolkVA United States Center for Global Health Old Dominion University NorfolkVA United States

ISBN: (纸本)9781510810594

关键词： Buildings

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A New Job Shop Heuristic Algorithm for Machine Scheduling Problems

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Journal of Applied Mathematics and Physics 2017年第11期5卷 2172-2182页

作者： Maryam Ehsaei Duc T. Nguyen Civil and Environmental Engineering Department Old Dominion University Norfolk VA USA Civil and Environmental Engineering (CEE) and Modeling Simulation and Visualization Engineering (MSVE) Departments Old Dominion University Norfolk VA USA

The purpose of this research is to present a straightforward and relatively efficient method for solving scheduling problems. A new heuristic algorithm, with the objective of minimizing the makespan, is developed and presented in this paper for job shop scheduling problems (JSP). This method determines jobs’ orders for each machine. The assessment is based on the combination of dispatching rules e.g. the “Shortest Processing Time” of each operation, the “Earliest Due Date” of each job, the “Least Tardiness” of the operations in each sequence and the “First come First Serve” idea. Also, unlike most of the heuristic algorithms, due date for each job, prescribed by the user, is considered in finding the optimum schedule. A multitude of JSP problems with different features are scheduled based on this proposed algorithm. The models are also solved with Shifting Bottleneck algorithm, known as one of the most common and reliable heuristic methods. The result of comparison between the outcomes shows that when the number of jobs are less than or equal to the number of machines, the proposed algorithm concludes smaller, and better, makespan in a significantly lower computational time, which shows the superiority of the suggested algorithm. In addition, for a category when the number of jobs are greater than the number of machines, the suggested algorithm generates more efficient results when the ratio of the number of jobs to the number of machines is less than 2.1. However, in this category for the mentioned ratio to be higher than 2.1, the smaller makespan could be generated by either of the methods, and the results do not follow any particular trend, hence, no general conclusions can be made for this case.

关键词： Heuristic Algorithm Job Shop Scheduling Shifting Bottleneck Makespan

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