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Journal of Defense Modeling and Simulation-Applications Methodology Technology-JDMS最新文献

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Benefits of using blended generative adversarial network images to augment classification model training data sets 使用混合生成对抗网络图像增强分类模型训练数据集的好处
IF 0.8 Q3 Engineering Pub Date : 2023-04-29 DOI: 10.1177/15485129231170225
Benjamin J McCloskey, Bruce A Cox, L. Champagne, Trevor J. Bihl
Object detection algorithms have reached nearly superhuman levels within the last decade; however, these algorithms require large diverse training data sets to ensure their operational performance matches performance demonstrated during testing. The collection and human labeling of such data sets can be expensive and, in some cases, such as Intelligence, Surveillance and Reconnaissance of rare events it may not even be feasible. This research proposes a novel method for creating additional variability within the training data set by utilizing multiple models of generative adversarial networks producing both high- and low-quality synthetic images of vehicles and inserting those images alongside images of real vehicles into real backgrounds. This research demonstrates a 17.90% increase in mean absolute percentage error, on average, compared to the YOLOv4-Tiny Model trained on the original non-augmented training set as well as a 14.44% average improvement in the average intersection over union rate. In addition, our research adds to a small, but growing, body of literature indicating that the inclusion of low-quality images into training data sets is beneficial to the performance of computer vision models.
在过去的十年里,目标检测算法已经达到了近乎超人的水平;然而,这些算法需要大量不同的训练数据集,以确保它们的操作性能与测试期间展示的性能相匹配。这些数据集的收集和人工标记可能是昂贵的,在某些情况下,例如对罕见事件的情报、监视和侦察,甚至可能是不可行的。本研究提出了一种在训练数据集中创建额外可变性的新方法,该方法利用生成对抗网络的多个模型生成高质量和低质量的车辆合成图像,并将这些图像与真实车辆图像一起插入真实背景中。该研究表明,与在原始非增强训练集上训练的YOLOv4-Tiny模型相比,平均绝对百分比误差平均增加了17.90%,平均交汇率平均提高了14.44%。此外,我们的研究增加了一个小但不断增长的文献体,表明将低质量图像纳入训练数据集有利于计算机视觉模型的性能。
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引用次数: 0
SPACE: a new modeling tool for supporting layout design of military command and control spaces SPACE:一个新的建模工具,用于支持军事指挥和控制空间的布局设计
IF 0.8 Q3 Engineering Pub Date : 2023-04-12 DOI: 10.1177/15485129231165310
Wenbi Wang
Military command and control spaces are complex work environments and critical facilities for a military mission. This paper describes a newly developed modeling tool called SPACE (Spatial layout Planning and Analysis for Communication Effectiveness) for assisting layout design of such workplaces. As a Human Factors tool, SPACE provides common functions required for workspace modeling, including rapid workspace prototyping, versatile design visualization, and algorithmic layout assessment. One of its key features is a layout evaluation algorithm that enables objective assessment of floor plans based on their impact on operator communication and interaction efficiency. In this paper, the main functionalities of SPACE are explained using a case study where models were constructed to compare three layout options for a Joint Intelligence Center. The results revealed the pros and cons of each layout in facilitating team interaction involving different sensory domains. While all three layouts were deemed acceptable, an inward-facing boardroom style design was predicted to be optimal as it best balanced the need for direct sightline access, non-technology-mediated verbal conversations, and the physical effort associated with movement to collaborators’ workstations. This study demonstrated the usefulness of modeling and simulation to provide quantitative auditable data for supporting evidence-based decision-making in military system design.
军事指挥和控制空间是复杂的工作环境和军事任务的关键设施。本文介绍了一种新开发的建模工具SPACE (Spatial layout Planning and Analysis for Communication Effectiveness),用于辅助此类工作场所的布局设计。作为一种人为因素工具,SPACE提供了工作空间建模所需的常用功能,包括快速工作空间原型、多功能设计可视化和算法布局评估。其关键特征之一是布局评估算法,该算法可以根据平面图对操作员通信和交互效率的影响对其进行客观评估。在本文中,通过一个案例研究来解释SPACE的主要功能,该案例研究构建了模型来比较联合情报中心的三种布局选项。结果揭示了每种布局在促进涉及不同感官域的团队互动方面的优缺点。虽然这三种布局都被认为是可以接受的,但内向型会议室风格的设计被认为是最佳的,因为它最好地平衡了直接视线访问的需求,非技术媒介的口头对话,以及与合作者的工作站移动相关的体力劳动。该研究证明了建模和仿真在为军事系统设计中的循证决策提供定量审计数据方面的有用性。
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引用次数: 0
Simulating quantum key distribution in fiber-based quantum networks 模拟光纤量子网络中的量子密钥分配
IF 0.8 Q3 Engineering Pub Date : 2023-04-07 DOI: 10.1177/15485129231154929
Dashiell LP Vitullo, Trevor Cook, Daniel E. Jones, L. Scott, Andrew Toth, B. Kirby
Quantum networks exploit the unique properties of quantum mechanics to enable communication and networking tasks unavailable to existing distributed classical systems. Recently, the research community has focused considerable effort on the simulation of large-scale quantum networks with the ultimate goal of understanding their general properties, developing technical standards, and estimating their expected performance. However, comparatively little effort has been spent considering how quantum networks may impact tactical scenarios of military relevance where both quantum and classical resources may be severely constrained. Here, we develop a custom framework, called QuanTACT, for quantum network simulation explicitly designed for future integration into existing tactical simulation tools. In particular, our framework extends the existing quantum networking tool, SQUANCH, to include channel models required to simulate deployed fiber environments. Furthermore, we implement the additional subroutines needed to simulate entanglement-based quantum key distribution (QKD) and use published results from various field-deployed QKD experiments to benchmark the performance of our framework.
量子网络利用量子力学的独特特性,使现有的分布式经典系统无法进行通信和网络任务。最近,研究团体将相当多的精力集中在大规模量子网络的模拟上,其最终目标是了解它们的一般特性,制定技术标准,并估计它们的预期性能。然而,相对而言,很少有人考虑量子网络如何影响军事相关的战术场景,在这些场景中,量子和经典资源都可能受到严重限制。在这里,我们开发了一个定制框架,称为QuanTACT,用于量子网络模拟,明确设计用于将来集成到现有的战术模拟工具中。特别是,我们的框架扩展了现有的量子网络工具SQUANCH,以包括模拟部署光纤环境所需的通道模型。此外,我们实现了模拟基于纠缠的量子密钥分发(QKD)所需的额外子程序,并使用来自各种现场部署的QKD实验的公开结果来基准测试我们框架的性能。
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引用次数: 1
A decision support system for multi-stakeholder exploration of the airship design space 飞艇设计空间多利益相关者探索决策支持系统
IF 0.8 Q3 Engineering Pub Date : 2023-04-02 DOI: 10.1177/15485129231164416
Daniel C. Richards, J. Salmon, Tevin J Dickerson, C. Mattson, William J Neff
Although there have been oscillations in airship interest since their use in the early 1900s, technological advancements and the need for more flexible and environmentally friendly transportation modes have caused a stream of study and surge in airship development in recent years. For companies and governments to understand how airships can be incorporated into their fleets to fulfill new or existing mission types, system design space exploration is an important step in understanding airships, their uses, and their design parameters. A decision support system (DSS), Design Exploration of Lighter-Than-Air Systems (DELTAS), was developed to help stakeholders with this task. DELTAS allows users to design airships and missions to determine how a design will perform in the scenario. As airships are sensitive to elevation and altitude, wind and terrain can also be studied to see how they may affect a mission scenario. Simulations can also be run for a given mission to find the Pareto-optimal designs for user-defined ranges of high-level airship design parameters. A case study is provided that demonstrates how DELTAS can be used to explore the airship design space for a specified mission. This case study shows how a design of experiments is important to more thoroughly cover the design space and to find and understand the relationships between airship design variables that lead to optimal mission times and costs.
尽管自20世纪初使用飞艇以来,人们对飞艇的兴趣一直在波动,但近年来,技术的进步和对更灵活、更环保的运输方式的需求已经引起了飞艇发展的一系列研究和激增。对于公司和政府来说,要了解如何将飞艇纳入其机队以完成新的或现有的任务类型,系统设计空间探索是了解飞艇,其用途和设计参数的重要一步。开发了一个决策支持系统(DSS),即轻于空气系统的设计探索(DELTAS),以帮助利益相关者完成这项任务。德尔塔允许用户设计飞艇和任务,以确定设计如何在场景中执行。由于飞艇对海拔高度很敏感,风和地形也可以研究,看看它们是如何影响任务场景的。对于给定的任务,也可以进行仿真,以在用户定义的高级飞艇设计参数范围内找到帕累托最优设计。提供了一个案例研究,演示了delta如何用于探索特定任务的飞艇设计空间。本案例研究表明,实验设计对于更彻底地覆盖设计空间以及发现和理解导致最佳任务时间和成本的飞艇设计变量之间的关系是多么重要。
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引用次数: 0
A survey of fatigue measures and models 疲劳测量和模型综述
IF 0.8 Q3 Engineering Pub Date : 2023-03-14 DOI: 10.1177/15485129231158580
A. Laverghetta, Minh Tran, Alec Braynen, Stephen Steinle, Bekhzodbek Moydinboyev, Heba Daas, John Licato
In long, stressful operational periods, military personnel face numerous challenges that may compromise their performance, an especially important one being fatigue. Current literature supports the view that behavioral, physiological, and cognitive factors are all predictive of the level of fatigue in individuals. However, much of the work on modeling fatigue has taken a narrow approach, relying only on a handful of modalities to measure fatigue. This paper aims to fill the void by providing an extensive overview of the current literature on both computationally measuring and modeling fatigue. We provide up-to-date and practical advice on which models are best suited for different situations and highlight directions for future work.
在长时间紧张的作战期间,军事人员面临许多可能影响其表现的挑战,其中一个特别重要的挑战是疲劳。目前的文献支持这样一种观点,即行为、生理和认知因素都可以预测个体的疲劳程度。然而,许多关于疲劳建模的工作都采取了一种狭窄的方法,仅依靠少数几种模式来测量疲劳。本文旨在填补空白,提供了一个广泛的概述,目前的文献在计算测量和建模疲劳。我们提供最新和实用的建议,哪些模型最适合不同的情况,并强调未来工作的方向。
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引用次数: 0
Mathematical modeling of strategic behavior: the Battle of Midway, 1942 战略行为的数学模型:1942年中途岛战役
IF 0.8 Q3 Engineering Pub Date : 2023-03-07 DOI: 10.1177/15485129231160182
Konstantina-Maria Founta, L. Zachilas
In this paper, an innovative discrete dynamical model is presented, which is used to predict the kind of strategic behavior the participants should adopt to win a battle. For study purposes, a computer model is developed to reveal the most critical factors that strategically affect combat and the relationship of dependence between the warring parties. Besides, it can predict the outcome of a battle under specific scenarios. Furthermore, the proposed dynamical system is applied in Midway’s air–naval battle, which was one of the most decisive battles of World War II (WWII). It was a significant turning point in the history of naval warfare in the Pacific Ocean since the victory of the United States marked an end to Japanese expansionist policy, and these are the reason this battle was chosen. The numerical results of the analysis were presented, and the key factors (e.g., persons, decisions, and weather conditions represented by the critical values of model parameters) were highlighted, defining the outcome of the conflict.
本文提出了一种新颖的离散动力学模型,用于预测参与者为赢得战斗所应采取的战略行为。为了研究目的,开发了一个计算机模型来揭示战略上影响战斗和交战各方之间依赖关系的最关键因素。此外,它还可以预测特定场景下的战斗结果。并将所提出的动力系统应用于第二次世界大战中最具决定性的战役之一中途岛空海战中。这是太平洋海战历史上的一个重要转折点,因为美国的胜利标志着日本扩张主义政策的结束,这就是选择这场战斗的原因。给出了分析的数值结果,并强调了关键因素(例如,由模型参数的临界值表示的人员、决策和天气条件),从而确定了冲突的结果。
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引用次数: 0
Numerical investigation of modern threats for ground vehicles with emphasis on fragmentation behavior during hard kill scenario 现代地面车辆威胁的数值研究,重点是硬杀伤场景下的破片行为
IF 0.8 Q3 Engineering Pub Date : 2023-02-10 DOI: 10.1177/15485129231153637
Morten Rikard Jensen, P. Mulligan, Kshitiz Khanna
The research covered in this paper is related to numerical modeling of realistic threats. The final goal is to simulate the effects from the impact of an RPG-7 projectile on a GAZ-2975 Tigr infantry vehicle protected by an ERA. The fragmentation that results from the impact is studied. Leading up to the final model, several models are created, starting with an explosively driven cylinder to study fragmentation modeling. The next step was modeling the setup defined by NATO STANAG 4526 which was used to characterize the impact from an RPG-7. Based upon these results, a generic RPG-7 model was developed which impacted an ERA, modeled as two plates with a layer of high explosive (HE) between them. All models ran successfully to normal termination, and they showed how numerical tools can be used to describe and investigate these very complicated events.
本文的研究涉及到现实威胁的数值模拟。最终目标是模拟RPG-7炮弹对GAZ-2975虎式步兵车辆的冲击效果。研究了撞击造成的破碎。导致最终的模型,几个模型被创建,从一个爆炸驱动的圆柱体开始研究碎片建模。下一步是对北约STANAG 4526定义的设置进行建模,该设置用于表征RPG-7的冲击。在此基础上,建立了一种RPG-7撞击ERA的通用模型,模型为两片板之间有一层高爆药(HE)。所有的模型都成功地运行到正常终止,它们展示了如何使用数值工具来描述和研究这些非常复杂的事件。
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引用次数: 0
Accelerated point set registration method 加速点集配准方法
IF 0.8 Q3 Engineering Pub Date : 2023-02-01 DOI: 10.1177/15485129221150454
Ryan M Raettig, James D. Anderson, S. Nykl, L. Merkle
In computer vision and robotics, point set registration is a fundamental issue used to estimate the relative position and orientation (pose) of an object in an environment. In a rapidly changing scene, this method must be executed frequently and in a timely manner, or the pose estimation becomes outdated. The point registration method is a computational bottleneck of a vision-processing pipeline. For this reason, this paper focuses on speeding up a widely used point registration method, the iterative closest point (ICP) algorithm. In addition, the ICP algorithm is transformed into a massively parallel algorithm and mapped onto a vector processor to realize a speedup of approximately an order of magnitude. Finally, we provide algorithmic and run-time analysis.
在计算机视觉和机器人技术中,点集配准是用于估计环境中物体的相对位置和方向(姿态)的基本问题。在快速变化的场景中,这种方法必须频繁且及时地执行,否则姿势估计就会过时。点配准方法是视觉处理流水线的计算瓶颈。为此,本文重点研究了一种被广泛应用的点配准方法——迭代最近点(ICP)算法。此外,将ICP算法转换为大规模并行算法,并将其映射到矢量处理器上,实现了大约一个数量级的加速。最后,我们提供了算法和运行时分析。
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引用次数: 1
Modeling efficiency and safety on an aircraft carrier flight deck 航空母舰飞行甲板的效率和安全性建模
IF 0.8 Q3 Engineering Pub Date : 2023-02-01 DOI: 10.1177/15485129221150939
M. Cummings, Songpo Li, Hong Han, Carlos Aguilar
Aircraft carrier flight decks present high-risk mission-critical environments that need to be both efficient and safe. The concept of optimal manning, having just enough people to do the job safely and efficiently, is paramount in order to put the least amount of people at risk while not sacrificing mission effectiveness. To this end, an agent-based model, the optimal manning simulation (OMS) was developed, which specifically looks at the launch process of the flight deck in order to quantify the risk and efficiency of people working on the flight deck. OMS models different classes of crew members on the flight deck, aircraft, and resources like catapults. OMS measures safety through collisions or near-collisions of people and aircraft, as well as how long it takes to execute a launch cycle, the primary efficiency metric. Validation and sensitivity analyses provide confidence in OMS results. To demonstrate its utility, OMS is also used to predict how the future introduction of unmanned aerial vehicles could impact staffing and performance measures.
航空母舰飞行甲板呈现出高风险的关键任务环境,需要既高效又安全。最佳人员配置的概念,即有足够的人安全有效地完成工作,是最重要的,以便在不牺牲任务效率的情况下,使最少的人处于危险之中。为此,开发了基于agent的最优配员仿真模型(OMS),该模型专门研究飞行甲板的发射过程,以量化在飞行甲板上工作的人员的风险和效率。OMS对飞行甲板、飞机和弹射器等资源上不同级别的机组人员进行建模。OMS通过人员与飞机的碰撞或接近碰撞,以及执行发射周期所需的时间(主要效率指标)来衡量安全性。验证和敏感性分析为OMS结果提供了可信度。为了证明其实用性,OMS还被用于预测未来无人驾驶飞行器的引入对人员配备和绩效指标的影响。
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引用次数: 1
Development and assessment of a resilient telecoms system 弹性电信系统的开发和评估
IF 0.8 Q3 Engineering Pub Date : 2023-01-11 DOI: 10.1177/15485129221143791
George Gallarno, Jeremy P. Muniz, G. Parnell, E. Pohl, Jingxian Wu
Emergency telecommunication infrastructure is essential for residents and emergency responders during natural disasters to coordinate life-saving and life-preserving efforts. Ensuring resilience of the emergency telecommunication infrastructure is of critical importance for regions with an increased likelihood of natural disasters. We developed an integrated modeling framework for assessing emergency telecommunication systems. The framework used performance models to assess coverage and surge capabilities for a given system architecture. The performance models assess the telecom system value using a multiple objective decision analysis value model with stake-holder and technology performance measures. After constructing a life cycle cost model for emergency telecommunication systems, we conducted an illustrative value versus cost trade-off analysis using three alternative decision frames. The decision analysis framework allows for exploration of the system design tradespace so that decision-makers can select the best emergency telecom architecture using a defensible and transparent, performance-driven methodology.
应急电信基础设施对于居民和应急人员在自然灾害期间协调救生和救生工作至关重要。确保应急电信基础设施的复原力对于自然灾害可能性增加的区域至关重要。我们开发了一个综合建模框架来评估应急电信系统。该框架使用性能模型来评估给定系统架构的覆盖范围和激增能力。绩效模型采用多目标决策分析价值模型,结合利益相关者和技术绩效指标对电信系统价值进行评估。在构建应急电信系统的生命周期成本模型后,我们使用三种可选的决策框架进行了说明性的价值与成本权衡分析。决策分析框架允许探索系统设计交易空间,以便决策者可以使用可防御的、透明的、性能驱动的方法选择最佳的应急电信架构。
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引用次数: 1
期刊
Journal of Defense Modeling and Simulation-Applications Methodology Technology-JDMS
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