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Humanitarian/emergency logistics models: A state of the art overview

Humanitarian/emergency logistics models: A state of the art ...

Summer Computer simulation Conference, SCSC 2013 and Work in Progress, WIP 2013, Part of the 2013 Summer simulation Multiconference, SummerSim 2013

作者： Rafael, Diaz Joshua, Behr Ange-Lionel, Toba Bridget, Giles Ng, ManWo Francesco, Longo Letizia, Nicoletti Virginia Modeling Analysis and Simulation Center Old Dominion University United States Department of Modeling Simulation and Visualization Engineering Old Dominion University United States MSC-LES University of Calabria Mechanical Department Italy

ISBN: (纸本)9781627482769

The occurrence of a natural disaster is generally characterized not only by the tremendous physical and material damage, but also by the substantial social and economic impact on the affected communities. Over the years, the research community has attempted to investigate the different dimensions of these events so that these incidents may be understood and appropriate procedures that properly assess and deal with these occurrences may be developed. A critical question in this context relates to the regional ability to deal with the disaster and organize responders, communities, and equipment to mitigate the adverse effects that stem from the occurrence of these incidents. Emergency Management and Humanitarian Logistics provide tools and knowledge that assist decision makers in preparing for the occurrence of a catastrophic event while coping with the material and humanitarian response. This paper provides an overview of some of the most relevant modeling efforts discussed in the literature related to this topic. Opportunities for the application of modeling and simulation (M&S) in specific areas of humanitarian logistics and emergency management are presented.

关键词： Disasters

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Contour models for descriptive patient-specific neuro-anatomical modeling: Towards a digital brainstem atlas 2

Contour models for descriptive patient-specific neuro-anatom...

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2nd Workshop on Computational Methods and Clinical Applications for Spine Imaging, CSI 2014 held in conjunction with MICCAI 2014

作者： Patel, Nirmal Sultana, Sharmin Audette, Michel A. Department of Electrical and Computer Engineering Old Dominion University Norfolk United States Department of Modeling Simulation and Visualization Engineering Old Dominion University Norfolk United States

ISBN: (纸本)9783319141473

This paper describes on-going work on the transposition to digital format of 2D images of a printed atlas of the brainstem. In MRI-based anatomical modeling for neurosurgery planning and simulation, the complexity of the functional anatomy entails a digital atlas approach, rather than less descriptive voxel or surfacebased approaches. However, there is an insufficiency of descriptive digital atlases, in particular of the brainstem. Our approach proceeds from a series of numbered, contour-based sketches coinciding with slices of the brainstem featuring both closed and open contours. The closed contours coincide with functionally relevant regions, in which case our objective is to fill in each corresponding label, which is analogous to painting numbered regions in a paint-by-numbers kit. The open contours typically coincide with cranial nerve tracts as well as symbols representing the medullary pyramids. This 2D phase is needed in order to produce densely labeled regions that can be stacked to produce 3D regions, as well as identifying embedded paths and outer attachment points of cranial nerves. In future work, the stacked labeled regions will be resampled and refined probabilistically, through active contour and surface modeling based on MRI T1, T2 and tractographic data. The relevance to spine modeling of this project is two-fold: (i) this atlas will fill a void left by the spine and brain segmentation communities, as no digital atlas of the brainstem exist, and (ii) this atlas is necessary to make explicit the attachment points of major nerves having both cranial and spinal origin, specifically nerves X and XI, as well all the attachment points of cranial nerves other than I and II. © Springer International Publishing Switzerland 2015.

关键词： Neurosurgery

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Academic/industry educational lab for simulation-based test & evaluation of autonomous vehicles 18

Academic/industry educational lab for simulation-based test ...

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2018 Winter simulation Conference, WSC 2018

作者： Leathrum, James F. Mielke, Roland R. Shen, Yuzhong Johnson, Harry Department of Modeling Simulation and Visualization Engineering Old Dominion University NorfolkVA United States Center for Innovation Lockheed Martin Suffolk VA United States

ISBN: (纸本)9781538665725

An academic/industry alliance can improve the preparedness of students to enter the workforce. When the alliance is centered around a laboratory providing students real world research and development experience, both partners benefit from the intellectual engagement. This paper discusses the benefits of a collaborative laboratory being developed in support of the modeling and simulation engineering program at Old Dominion University. The laboratory focuses on simulation-based test and evaluation (T&E) of autonomous vehicles, an important economic and social problem. Economically, driverless cars and drone delivery systems are the wave of the future. Socially there are issues of public acceptance of these systems as evident by public reaction to the infrequent, but highly public, accidents involving driverless cars. The laboratory allows academia and industry to address these important problems by improving the T&E of these systems while also improving student skills, giving undergraduate and graduate students an opportunity to participate in research. © 2018 IEEE

关键词： Autonomous vehicles

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Case studies for data-oriented emergency management/planning in complex urban systems 49th

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49th Hawaii International Conference on System Sciences, HICSS 2016

作者： Xie, Kun Ozbay, Kaan Zhu, Yuan Yang, Hong New York University BrooklynNY11201 United States Department of Modeling Simulation and Visualization Engineering Old Dominion University NorfolkVA23529 United States

ISBN: (纸本)9783662534151

To reduce the losses caused by natural disasters such as hurricanes, it is necessary to build effective and efficient emergency management/planning systems for cities. With increases in volume, variety and acquisition rate of urban data, major opportunities exist to implement data-oriented emergency management/planning. New York/New Jersey metropolitan area is selected as the study area. Large datasets related to emergency management/planning including, traffic operations, incidents, geographical and socio-economic characteristics, and evacuee behavior are collected from various sources. Five related case studies conducted using these unique datasets are summarized to present a comprehensive overview on how to use big urban data to obtain innovative solutions for emergency management and planning, in the context of complex urban systems. Useful insights are obtained from data for essential tasks of emergency management and planning such as evacuation demand estimation, determination of evacuation zones, evacuation planning and resilience assessment. © Springer-Verlag GmbH Germany 2016.

关键词： Hurricanes

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Evaluating effects of application based and automatic energy saving strategies on NWChem 25

Evaluating effects of application based and automatic energy...

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

作者： Sundriyal, Vaibhav Fought, Ellie Sosonkina, Masha Windus, Theresa L. Department of Modeling Simulation and Visualization Engineering Old Dominion University NorfolkVA23529 United States Department of Chemistry Iowa State University AmesIA50010 United States

ISBN: (纸本)9781510838222

High-performance application developers are becoming increasingly aware of effects of the increasing energy consumption on the costs and reliability of modern computing systems. A traditional way to achieve energy savings is by changing the processor frequency dynamically during application execution. Several techniques have been proposed in the past at application, library, and transparent level. In this work, the effect of two such techniques, at application and transparent levels, are evaluated in terms of their effects on the execution time and energy consumption for different algorithms in the quantum chemistry package NWChem. Experimental results depict that there is no clear winner between the two methods since the transparent-level makes decisions without intimate knowledge of the application while the strategy based solely on application does not take into the account the platform characteristics at the runtime. Hence, it is argued that the best strategy would be a hybrid of the two levels. ©2017 Society for modeling & simulation International (SCS).

关键词： Energy utilization

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TOWARDS AN ANATOMICAL modeling PIPELINE FOR simulation AND ACCURATE NAVIGATION FOR BRAIN AND SPINE SURGERY 17

TOWARDS AN ANATOMICAL MODELING PIPELINE FOR SIMULATION AND A...

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simulation Multiconference

作者： Michel A. Audette Tanweer Rashid Shrabani Ghosh Nirmal Patel Sharmin Sultana Department of Modeling Simulation and Visualization Engineering Old Dominion University

ISBN: (纸本)9781510838284

This paper summarizes work underway on neurosurgery simulation and navigation, emphasizing anatomical modeling techniques and clinical requirements for simulation. We describe innovations that center on patient-specific anatomical modeling of the brain, including skull base anatomy, and spine. In general, we advocate a model-based approach to segmentation that leverages digital atlases of the anatomy, as well as a discrete deformable contour or surface model which can be deformed to fit patient image data. Furthermore, we proceed in a manner that represents several tissue boundaries at once, whereby a voxel-based functional atlas is expressed as a deformable 2-Simplex multi-surface model. Our research has also endowed the 2-Simplex multi-surface model with shape statistics and shared faces. We also describe innovations on deformable 1-Simplex 3D contour models that have been applied to identifying the intracranial portion of cranial nerves. Innovations on the clinical requirements front relate to the development of neurosurgical ontologies.

关键词： Surgery simulation Meshing Segmentation Intra-operative tissue shift Therapy planning engaging Cerebrum simulating Technological Innovations surface modeling navigation Anatomic Models pipeline WWOX gene image data Anatomy atlas modeling Skull Base

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Strategies to Hide Communication for a Classical Molecular Dynamics Proxy Application 15

Strategies to Hide Communication for a Classical Molecular D...

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simulation Multiconference

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

ISBN: (纸本)9781510801011

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.

关键词： Hybrid programming model OpenMP MPI Communication/computation overlap Classical molecular dynamics message passing mannose phosphate isomerase remote procedure calls Molecular Dynamics Proxy Communication Research THREADS communication subsystem Computer Architecture Hide Load balancing buffers

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AN AGENT-BASED simulation OF THE IMPACT OF YOGIC BREATHING ADOPTION 17

AN AGENT-BASED SIMULATION OF THE IMPACT OF YOGIC BREATHING A...

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simulation Multiconference

作者： Saturnina Nisperos Sonali Kakde Frederic McKenzie Department of Modeling Simulation & Visualization Engineering Old Dominion University

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.

关键词： Agent-based model Cardiovascular disease Yogic breathing technique Cardiovascular Diseases Agent-Based modeling respiration Cause of Death stresses Stress (mechanics) Stress Persons simulating sky Yoga Stress intensity Health hazards Stressing Adoption

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Watertight and 2-manifold Surface Meshes Using Dual Contouring with Tetrahedral Decomposition of Grid Cubes

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Procedia engineering 2016年 163卷 136-148页

作者： Tanweer Rashid Sharmin Sultana Michel A. Audette Department of Modeling Simulation and Visualization Engineering Old Dominion University Norfolk VA 23529 USA

The Dual Contouring algorithm (DC) is a grid-based process used to generate surface meshes from volumetric data. The advantage of DC is that it can reproduce sharp features by inserting vertices anywhere inside the grid cube, as opposed to the Marching Cubes (MC) algorithm that can insert vertices only on the grid edges. However, DC is unable to guarantee 2-manifold and watertight meshes due to the fact that it produces only one vertex for each grid cube. We present a modified Dual Contouring algorithm that is capable of overcoming this limitation. Our method decomposes an ambiguous grid cube into a maximum of twelve tetrahedral cells; we introduce novel polygon generation rules that produce 2-manifold and watertight surface meshes. We have applied our proposed method on realistic data, and a comparison of the results of our proposed method with results from traditional DC shows the effectiveness of our method.

关键词： Surface meshing 2-manifold watertight dual contouring mesh generation tetrahedral decomposition

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Implementation of a 3D interactive mobile app for practicing engineering laboratory experiment 125

Implementation of a 3D interactive mobile app for practicing...

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125th ASEE Annual Conference and Exposition

作者： Ren, Shuo Zhu, Zelin McKenzie, Rick Shen, Yuzhong Old Dominion University Department of Modeling Simulation and Visualization Engineering NorfolkVA United States Old Dominion University ESRI RedlandsCA United States United States

Performing laboratory experiment for off-campus and distance learning students is always a challenging task. Unlike other theory-based courses, engineering laboratory experiment focuses heavily on hands-on tasks. Although many web-based and other virtual reality (VR)-based laboratories widely exist, non-portability, difficult accessibility and high cost of these VR-based devices bring disadvantages to the convenience of learning. One solution is to use mobile devices, which are more portable, easier to access and cheaper in cost, and yet can still be interactive and engaging for students to practice and experience hands-on activities. In this paper, we discuss the benefits of using mobile devices for online education and the development of an Android-based 3D interactive mobile app for an undergraduate mechanical engineering laboratory. This app is capable of not only providing off-campus and distance-learning students an opportunity to practice the experiment on mobile devices, but also helping on-campus students to get familiarized with the experiment procedure prior to their physical laboratory experiment. © American Society for engineering Education, 2018.

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