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Integrated Cellular Framework for modeling Ecosystems: Theory and Applications (vol 94, 213, 2017)

simulation-TRANSACTIONS OF THE SOCIETY FOR modeling AND simulation INTERNATIONAL 2018年第9期94卷 NP1-NP1页

作者： Kazi, Baha Uddin Wainer, Gabriel Department of Systems and Computer Engineering Center for Visualization Simulation and Modeling Carleton University Canada

Integrated Cellular Framework for modeling Ecosystems: Theory and Applications', by Baha Uddin Kazi and Gabriel Wainer, published Online First on 11 March 2017 in the journal of simulation with the DOI: 10.1177/0037549717706007. In this paper, the funding statement was incorrect and the acknowledgements section was not added in the Online First version. This has since been corrected in the Online First version of the article.

关键词： Cell-DEVS modeling and simulation DEVS geographic information systems ecosystems

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Adaptive double chain quantum genetic algorithm for constrained optimization problems

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Chinese Journal of Aeronautics 2015年第1期28卷 214-228页

作者： Kong Haipeng Li Ni Shen Yuzhong School of Automation Science and Electrical Engineering Beihang University Department of Modeling Simulation and Visualization Engineering Old Dominion University

Optimization problems are often highly constrained and evolutionary algorithms（EAs）are effective methods to tackle this kind of problems. To further improve search efficiency and convergence rate of EAs, this paper presents an adaptive double chain quantum genetic algorithm（ADCQGA） for solving constrained optimization problems. ADCQGA makes use of doubleindividuals to represent solutions that are classified as feasible and infeasible solutions. Fitness（or evaluation） functions are defined for both types of solutions. Based on the fitness function, three types of step evolution（SE） are defined and utilized for judging evolutionary individuals. An adaptive rotation is proposed and used to facilitate updating individuals in different *** further improve the search capability and convergence rate, ADCQGA utilizes an adaptive evolution process（AEP）, adaptive mutation and replacement techniques. ADCQGA was first tested on a widely used benchmark function to illustrate the relationship between initial parameter values and the convergence rate/search capability. Then the proposed ADCQGA is successfully applied to solve other twelve benchmark functions and five well-known constrained engineering design problems. Multi-aircraft cooperative target allocation problem is a typical constrained optimization problem and requires efficient methods to tackle. Finally, ADCQGA is successfully applied to solving the target allocation problem.

关键词： constrained rotation utilized benchmark constraints allocation fitness tackle illustrate facilitate

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Collaborative virtual environment for engineering laboratory 29

Collaborative virtual environment for engineering laboratory

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29th European Conference on Modelling and simulation, ECMS 2015

作者： Ren, Shuo McKenzie, Frederic D. Department of Modeling Simulation and Visualization Engineering NorfolkVA United States

ISBN: (纸本)9780993244001

In recent years, virtual environments have played a key role in engineering education. The use of virtual environments as learning tools continues to grow on account of the capabilities of providing learners with more interactive and immersive learning experiences than most of the conventional learning methods. This paper aims to introduce the related background and recent research work on the topic of the collaborative virtual environment (CVE) and then presents a solution of implementing a web-based 3D virtual engineering laboratory in a collaborative setting. This will allow users to create their own avatars in the virtual world and work collaboratively over the network. Such a method may also be beneficial for distance learning. © ECMS Valeri M. Mladenov, Petia Georgieva, Grisha Spasov, Galidiya Petrova (Editors).

关键词： Virtual reality

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An accredited engineering curriculum for modeling and simulation 27

An accredited engineering curriculum for modeling and simula...

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27th European modeling and simulation Symposium, EMSS 2015

作者： McKenzie, Frederic D. Modeling Simulation and Visualization Engineering Department Old Dominion University NorfolkVA United States

ISBN: (纸本)9788897999485

The Accreditation Board for engineering and Technology (ABET) is an internationally known organization for recognizing engineering programs that work towards student attainment in learning outcomes that conform to engineering disciplines and have a process for measuring attainment and continuous improvement. There are eight general criteria to be satisfied that include student outcomes, educational objectives, curriculum, facilities and faculty. Additionally, there may be program-specific requirements depending on the particular discipline. The modeling and simulation (M&S) engineering (M&SE) program at Old Dominion University satisfies the program criteria for general engineering in the ABET engineering Accreditation Commission and declares detailed discipline-specific student outcomes to ensure unambiguous definition of a pioneering program in order to set a standard that can be utilized as a template for future up-and-coming M&SE programs. This paper presents the curriculum and programspecific outcomes that have been incorporated into our continuous improvement process for student attainment of our M&S engineering program outcomes.

关键词： Curricula

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An agent-based simulation of the impact of yogic breathing adoption 49

An agent-based simulation of the impact of yogic breathing a...

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49th Summer Computer simulation Conference, SCSC 2017, Part of the 2017 Summer simulation Multi-Conference, SummerSim 2017

作者： Nisperos, Saturnina Kakde, Sonali McKenzie, Frederic Department of Modeling Simulation and Visualization Engineering Old Dominion University NorfolkVA United States

ISBN: (纸本)9781510838284

Stress can impose negative impact on the health and well-being of a person. People who do not have tools to manage their stress are more likely to acquire cardiovascular disease (CVD) -The leading cause of death in the USA. For affected individuals, it not only implies health risks but also increased medical expenditures which can lead to financial issues -The top stressor in the USA. Research studies reveal that yoga reduces the stress perceived and modulates stress response systems. In this study, an agent-based model was developed to simulate the impact of adopting a yogic breathing technique, particularly on managing stress, preventing CVD and reducing the associated medical expenses. The simulation results show that people who practice SKY have generally lower and normal SBP, BMI and stress levels while those who don't, have generally higher levels and fall into the high-risk category. © 2017 Society for modeling & simulation International (SCS).

关键词： Health risks

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A bachelor of science in modeling and simulation engineering

A bachelor of science in modeling and simulation engineering

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4th International Multi-Conference on engineering and Technological Innovation, IMETI 2011

作者： Leathrum Jr., James F. Mielke, Roland R. Department of Modeling Simulation and Visualization Engineering Old Dominion University Norfolk VA 23529 United States

ISBN: (纸本)9781936338467

In recent years, a number of modeling and simulation graduate programs have been initiated to address the growing demand in industry and government for engineers and scientists educated in this discipline. However, much less has been done to develop undergraduate programs. This paper addresses the design of a curriculum for a baccalaureate program in modeling and simulation engineering. The constraints and objectives that guide the curriculum design are described. Then the development of a new curriculum, designed to meet the ABET accreditation requirements for general engineering programs, is presented.

关键词： Curricula

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modeling & simulation as an enabling technology for engineering innovation education

Modeling & simulation as an enabling technology for engineer...

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4th International Multi-Conference on engineering and Technological Innovation, IMETI 2011

作者： Leathrum Jr., James F. Mielke, Roland R. Department of Modeling Simulation and Visualization Engineering Old Dominion University Norfolk VA 23529 United States

ISBN: (纸本)9781936338467

The inclusion of innovation within engineering education is being identified as a crucial effort to ensure our technological competitiveness as evident by the number of solicitations including engineering innovation education by the National Science Foundation. While most work is spent on identifying how to create environments that foster innovation, this paper focuses on developing a technical skill set that enables innovation when in the correct environment. The premise of this paper is that the skills taught within the modeling and simulation curricula are those that enable innovative thinking. The skill set focuses on the abstract thinking, communication, and evaluation skills. This paper does not propose changing current engineering curricula, but rather to augment them by introducing abstract modeling concepts early in the curriculum, allowing students to see the generation of an innovative idea. This is be done through a series of small modules and assignments spread throughout the curriculum. Furthermore, the modules benefit the existing curricula by providing a context for why the students are learning the classic material.

关键词： engineering education

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Strategies to hide communication for a classical molecular dynamics proxy application 23

Strategies to hide communication for a classical molecular d...

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23rd High Performance Computing Symposium, HPC 2015, Part of the 2015 Spring simulation Multi-Conference, SpringSim 2015

作者： Ngatang, Issakar Sosonkina, Masha Department of Modeling Simulation and Visualization Engineering Old Dominion University NorfolkVA23529 United States

ISBN: (纸本)9781510810600

Co-designing applications and computer architectures has become of major importance due to the growing complexity of both applications and architectures and the need to better match application characteristics to the available hardware. Thus, "mini-applications", which serve as proxies of large-scale ones by highlighting their most intensive parts and major workflow components, appeared to the co-design, tuning, and adaptation purposes. This paper presents a work on optimizing the communication subsystem of a classical MD proxy (CoMD) application executed on multi-core computing clusters. The research focuses on hiding communication with certain buffer handling operations. In particular, two strategies are presented: one that uses two parallel threads for communication and buffer handling and another that introduces more parallelism by allowing all the available threads to unload the buffers while using two thread to communicate, thereby improving load balancing. The first proposed strategy yields performance gains up to 61% in the communication routines, corresponding to 6% gains in the overall time, while the second strategy achieves, respectively, about 73% and 6.3% improvement. Copyright © 2015 Society for modeling & simulation International (SCS).

关键词： Computer architecture

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Energy evaluation for applications with different thread affinities on the Intel xeon phi 26

Energy evaluation for applications with different thread aff...

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26th IEEE International Symposium on Computer Architecture and High Performance Computing Workshops, SBAC-PADW 2014

作者： Lawson, Gary Sosonkina, Masha Shen, Yuzhong Department of Modeling Simulation and Visualization Engineering Old Dominion University NorfolkVA23529 United States

ISBN: (纸本)9781479970148

The Intel Xeon Phi coprocessor offers high parallelism on energy-efficient hardware to minimize energy consumption while maintaining performance. Dynamic frequency and voltage scaling is not accessible on the Intel Xeon Phi. Hence, saving energy relies mainly on tuning application performance. One general optimization technique is thread affinity, which is an important factor in multi-core architectures. This work investigates the effects of varying thread affinity modes and reducing core utilization on energy and execution time for the NASA Advanced Supercomputing (NAS) Parallel Benchmarks (NPB). Energy measurements are captured using the micsmc utility tool available on Xeon Phi. The measurements are checked against total power captured using Wattsup power meters. The results are compared to the system-default thread affinity and granularity modes. Mostly positive impacts on performance and energy are observed: When executed at the maximum thread count on all unoccupied cores, all the benchmarks but one exhibited energy savings if a specific affinity mode is set. © 2014 IEEE.

关键词： NASA

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Runtime power limiting of parallel applications on Intel Xeon phi processors 4

Runtime power limiting of parallel applications on Intel Xeo...

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4th International Workshop on Energy Efficient Supercomputing, E2SC 2016

作者： Lawson, Gary Sundriyal, Vaibhav Sosonkina, Masha Shen, Yuzhong Department of Modeling Simulation and Visualization Engineering Old Dominion University NorfolkVA23529 United States

ISBN: (纸本)9781509038565

Energy-efficient computing is crucial to achieving exascale performance. Power capping and dynamic voltage/frequency scaling may be used to achieve energy savings. The Intel Xeon Phi implements a power capping strategy, where power thresholds are employed to dynamically set voltage/frequency at the runtime. By default, these power limits are much higher than the majority of applications would reach. Hence, this work aims to set the power limits according to the workload characteristics and application performance. Certain models, originally developed for the CPU performance and power, have been adapted here to determine power-limit thresholds in the Xeon Phi. Next, a procedure to select these thresholds dynamically is proposed, and its limitations outlined. When this runtime procedure along with static power-threshold assignment were compared with the default execution, energy savings ranging from 5% to 49% were observed, mostly for memory-intensive applications. © 2016 IEEE.

关键词： Benchmarking

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