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SSRN 2019年

作者： Tosh, Deepak K. Shetty, Sachin Sengupta, Shamik Kesan, Jay P. Kamhoua, Charles A. Dept. of Computer Science Norfolk State University VA United States Virginia Modeling Analysis and Simulation Center Old Dominion University VA United States Dept. of Computer Science and Engineering University of Nevada RenoNV United States College of Law University of Illinois Urbana ChampaignIL United States Cyber Assurance Branch Air Force Research Laboratory RomeNY United States

Critical infrastructure systems spanning from transportation to nuclear operations are vulnerable to cyber attacks. Cyber-insurance and cyber-threat information sharing are two prominent mechanisms to defend cybersecurity issues proactively. However, standardization and realization of these choices have many bottlenecks. In this paper, we discuss the benefits and importance of cybersecurity information sharing and cyber-insurance in the current cyber-warfare situation. We model a standard game theoretic participation model for cybersecurity information exchange (CYBEX) and discuss the applicability of economic tools in addressing important issues related to CYBEX and cyber-insurance. We also pose several open research challenges, which need to be addressed for developing a robust cyber-risk management capability. © 2019, The Authors. All rights reserved.

关键词： Cybersecurity

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The spread of wi-fi router malware revisited 20

The spread of wi-fi router malware revisited

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20th Communications and Networking Symposium, CNS 2017, Part of the 2017 Spring simulation Multi-Conference, SpringSim 2017

作者： Kavak, Hamdi Vernon-Bido, Daniele Padilla, Jose J. Diallo, Saikou Y. Gore, Ross J. Modeling Simulation Visualization and Eng. Dept. Old Dominion University 1300 Eng. and Comp. Sciences Bldg. NorfolkVA23529 United States Virginia Modeling Analysis and Simulation Cent. Old Dominion University 1030 University Boulevard SuffolkVA23435 United States

ISBN: (纸本)9781510838215

A study by Hu et al. (2009, PNAS, 106(5)) projected that a targeted malicious attack on Wi-Fi routers could infect a region in two days. The study also argued that the use of WPA security protocol in 60-70% routers would practically prevent such epidemics. This paper revisits their model with current Wi-Fi router data from *** and a refined data selection method. We examine the temporality and scale of the malware spread applying these two updates. Despite ≈88% WPA adoption rate, we see a rapid malware spread occurring in a week and infecting ≈34% of all insecure routers (≈5.4% of all) after two weeks. This result is significantly higher than the original study projection. It occurs due to the increased use of Wi-Fi routers causing a more tightly connected graph. We argue that this projected risk can increase when current vulnerabilities introduced and connected devices are considered. Ultimately, a thorough consideration is needed to assess cybersecurity risks in Wi-Fi ecosystem and evaluate interventions to stop epidemics. ©2017 Society for modeling & simulation International (SCS).

关键词： Malware

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Fault tolerant variants of the fine-grained parallel incomplete LU factorization 25

Fault tolerant variants of the fine-grained parallel incompl...

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25th High Performance Computing Symposium, HPC 2017, Part of the 2017 Spring simulation Multi-Conference, SpringSim 2017

作者： Coleman, Evan Sosonkina, Masha Chow, Edmond Naval Surface Warfare Center Dahlgren Division 17320 Dahlgren Rd DahlgrenVA United States Dept. of Modeling Simulation and Visualization Engineering Old Dominion University 5115 Hampton Blvd NorfolkVA United States School of Computational Science and Engineering Georgia Institute of Technology 266 Ferst Drive AtlantaGA United States

ISBN: (纸本)9781510838222

This paper presents an investigation into fault tolerance for the fine-grained parallel algorithm for computing an incomplete LU factorization. Results concerning the convergence of the algorithm with respect to the occurrence of faults, and the impact of any sub-optimality in the produced incomplete factors in Krylov subspace solvers are given. Numerical tests show that the simple algorithmic changes suggested here can ensure convergence of the fine-grained parallel incomplete factorization, and improve the performance of the use of the resulting factors as preconditioners in Krylov subspace solvers if faults do occur. ©2017 Society for modeling & simulation International (SCS).

关键词： Fault tolerance

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FAULT TOLERANT VARIANTS OF THE FINE-GRAINED PARALLEL INCOMPLETE LU FACTORIZATION 17

FAULT TOLERANT VARIANTS OF THE FINE-GRAINED PARALLEL INCOMPL...

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simulation Multiconference

作者： Evan Coleman Masha Sosonkina Edmond Chow Naval Surface Warfare Center Dahlgren Division Dept. of Modeling Simulation and Visualization Engineering Old Dominion University School of Computational Science and Engineering Georgia Institute of Technology

ISBN: (纸本)9781510838222

关键词： Fault tolerance Parallel preconditioning Incomplete factorization GPU acceleration Fault tolerance factorization Lutetium Converge faults Solvers Subspace

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Towards modeling factors that enable an attacker 48

Towards modeling factors that enable an attacker

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48th Summer Computer simulation Conference, SCSC 2016, Part of the 2016 Summer simulation Multi-Conference, SummerSim 2016

作者： Daniele, Vernon-Bido Padilla, Jose J. Diallo, Saikou Y. Kavak, Hamdi Gore, Ross J. Dept. of Modeling Simulation and Visualization Engineering Old Dominion University 1300 Eng. and Comp. Sciences NorfolkVA23529 United States Virginia Modeling Analysis and Simulation Center Old Dominion University 1030 University Boulevard SuffolkVA23435 United States

ISBN: (纸本)9781510824256

This paper presents an initial baseline model of factors that give rise to an attacker. It explores the impact of successful rate of attack and social learning on the decision to become an attacker. The model utilizes rational choice theory, routine activity theory, social learning theory, and perceived behavioral control from the theory of planned behavior to examine factors that moves an individual from user to attacker. An agent-based model is used to depict the effect of interactions of users and attacks of all users., successful and unsuccessful, have on an individual's decision to become an attacker. Preliminary results suggest that opportunity has a stronger influence than the rate of successful attacks or the size of the associated group. © 2016 Society for modeling & simulation International (SCS).

关键词： Cybersecurity

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A characterization of cybersecurity simulation scenarios 19

A characterization of cybersecurity simulation scenarios

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19th Communications and Networking Symposium, CNS 2016, Part of the 2016 Spring simulation Multi-Conference, SpringSim 2016

作者： Kavak, Hamdi Padilla, Jose J. Vernon-Bido, Daniele Dept. of Modeling Simulation and Visualization Engineering Old Dominion University 1300 Eng. and Comp. Sciences NorfolkVA23529 United States Virginia Modeling Analysis and Simulation Center Old Dominion University 1030 University Boulevard SuffolkVA23435 United States

ISBN: (纸本)9781510824256

The rate and sophistication of cyber-attacks are ever increasing forcing organizations to test their systems and assess their risks for specific situations (e.g., data breach). simulation is an emerging field in testing and assessing cybersecurity risk as it allows modeling cyber systems, their interdependencies, and interactions between cyber systems and people who are using, policing, and even attacking these systems. With cybersecurity scenarios, we help describe and formulate these complex interdependencies and relationships. In this paper, we first characterize cybersecurity scenarios along (1) the nature of cyber systems with considerations for design and (2) the type of actor with considerations of abilities. This characterization provides a more clear distinction compared to military oriented LVC (Live-Virtual-Constructive) simulation characterization. We then review examples from the literature based on our characterization. According to our review, we note that cyber system representation has been widely explored while actor representation is often realized at the technical-level dismissing social and cognitive aspects. Thus, we believe that paying more attention to social and cognitive aspects of actor representation, especially as developing general-purpose tools, will benefit the modeling and simulation community. © 2016 Society for modeling & simulation International (SCS).

关键词： Cybersecurity

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simulation-based environment for the eye-tracking control of tele-operated mobile robots

Simulation-based environment for the eye-tracking control of...

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modeling and simulation of Complexity in Intelligent, Adaptive and Autonomous Systems 2016, MSCIAAS 2016 and Space simulation for Planetary Space Exploration, SPACE 2016, Part of the 2016 Spring simulation Multi-Conference, SpringSim 2016

作者： Watson, Ginger S. Papelis, Yiannis E. Hicks, Katheryn C. Dept. STEM Education and Professional Studies 252 Education Building Old Dominion University NorfolkVA23529 United States Virginia Modeling Analysis and Simulation Center Old Dominion University 1030 University Blvd. SuffolkVA23435 United States Dept. of Modeling Simulation and Visualization Engineering Old Dominion University 1030 University Blvd. SuffolkVA23435 United States

ISBN: (纸本)9781510823198

Eye tracking has traditionally been used to measure the visual attention of users while performing a task or to aide disabled persons in performing hands-free interactions. The increased accuracy and reduced cost of eye-tracking equipment today makes it feasible to utilize this technology for explicit control tasks, especially in cases where there is confluence between the visual task and control. This paper describes the design of a virtual simulation environment in order to assess the feasibility of using eye-tracking to control the movement and payload of a ground robot during a visual search task. The resulting simulation-based test environment includes a kinematic model of a ground teleoperated robot within a virtual debris-filled, industrial environment with intact and damaged barrels. The operator can steer the robot while independently operating an onboard pan-tilt (PT) camera used to search for damaged containers. The environment supports three methods of control: manual, in which the operator utilizes two joysticks, one for speed/steering and one for camera control, hybrid in which the operator utilizes a joystick for speed/steering control and eye-tracking for camera control, and hands-free in which the operator utilizes gaze for both steering/speed control and camera operation. © 2016 Society for modeling & simulation International (SCS).

关键词： Eye tracking

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Using simulation games for teaching & learning discrete-event simulation

Using simulation games for teaching & learning discrete-even...

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2016 Winter simulation Conference, WSC 2016

作者： Padilla, Jose J. Lynch, Christopher J. Diallo, Saikou Y. Gore, Ross J. Barraco, Anthony Kavak, Hamdi Jenkins, Bakari Virginia Modeling Analysis and Simulation Center Old Dominion University 1030 University Blvd. SuffolkVA23435 United States Modeling Simulation and Visualization Engineering Dept. Old Dominion University 1300 Eng. and Computational Sciences Building NorfolkVA23529 United States Pruden Center for Industry and Technology 4169 Pruden Blvd. SuffolkVA23434 United States

ISBN: (纸本)9781509044863

Capturing and retaining the attention of students while learning complex topics like modeling and simulation is a critical task. In discrete-event simulation (DES), educators rely on examples like queueing systems in fast food restaurants or manufacturing organizations to provide the necessary context for learning. In many instances, these examples fall short in capturing the attention of students, especially at the middle and high school levels. One approach for learning complex topics, like creating simulations, is through gaming. This paper reports on the creative use of regular simulation tools to develop simulation games with entertainment content aimed towards engaging young learners. Two games are presented: one focuses on the use of decision nodes while the second focuses on the use of batch/separator nodes. As part of future work, we propose to use these games to evaluate how much knowledge transfers from an entertainment context to one using simulations for real-life situations. © 2016 IEEE.

关键词： Discrete event simulation

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Solution of the gardner problem on the lock-in range of phase-locked loop

arXiv

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arXiv 2017年

作者： Kuznetsov, N.V. Leonov, G.A. Yuldashev, M.V. Yuldashev, R.V. Modeling Evolutionary Algorithms Simulation and Artificial Intelligence Faculty of Electrical and Electronics Engineering Ton Duc Thang University Ho Chi Minh Viet Nam Faculty of Mathematics and Mechanics Saint-Petersburg State University Dept. of Mathematical Information Technology University of Jyaskyla Institute of Problems of Mechanical Engineering

The lock-in frequency and lock-in range concepts were introduced in 1966 by Floyd Gardner to describe the frequency differences of phase-locked loop based circuit for which the loop can acquire lock within one beat, i.e. without cycle slipping. These concepts became popular among engineering community and were given in various engineering publications. However, rigorous mathematical explanations of these concepts turned out to be a challenging task. Thus, in the 2nd edition of Gardner's well-known work Phaselock Techniques he wrote that "despite its vague reality, lock-in range is a useful concept" and posed the problem "to define exactly any unique lock-in frequency". In this paper an effective solution for Gardner's problem on the definition of the unique lock-in frequency and lock-in range is discussed. The lock-in range and lock-in frequency computation is explained on the example of classical second-order PLL with lead-lag and active proportional-integral filters. The obtained results can also be used for the lockin range computation of such PLL-based circuits as two-phase PLL, two-phase Costas loop, BPSK Costas loop, and optical Costas loop (used in intersatellite communication). Copyright © 2017, The Authors. All rights reserved.

关键词： Phase locked loops

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Optimal maximum likelihood estimates fusion in distributed network of sensors

Optimal maximum likelihood estimates fusion in distributed n...

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IEEE International Conference on Intelligent Computer Communication and Processing (ICCP)

作者： Bharat Madan Doina Bein Dept. of Modeling Simulation & Visualization Engineering Old Dominion University Norfolk USA Department of Computer Science California State University Fullerton Fullerton USA

ISBN: (纸本)9781509039005

A distributed network of sensors leverages its performance by aggregating information gathered by individual sensors through the process of sensor data fusion. Estimating parameters using a centralized scheme entails transporting data from multiple sensors to a centralized fusion center, leading to high network bandwidth consumption. Additionally, fusing raw sensor data from sensors with different sensing modalities may not be feasible. We propose an alternative approach in which each sensor first individually estimates the unknown parameters based solely on its own sensor data. Since sensors may not have a-priori knowledge of the probability distribution of the unknown parameters, each sensor independently computes its individual maximum likelihood estimates. Individual estimates along with their sufficient statistics are then communicated to the fusion center, which treats these estimates as observations to compute the optimum aggregated maximum likelihood estimates by maximizing the new likelihood function of these observations. The proposed technique offers two significant advantages: (i) Since each sensor computes its individual estimates based solely on its own sensed data, it is easily applicable to sensor networks having multi-modal sensors, and (ii) As compared to raw sensor data, communicating estimates and their sufficient statistics to the fusion center requires substantially less network bandwidth. Performance of the aggregated estimates is evaluated through simulations and by computing the Cramer-Rao lower bound.

关键词： Maximum likelihood estimation Sensor fusion Bandwidth Sensor phenomena and characterization Computational modeling

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