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Ontologies for situation-based crime scene identities 基于情境的犯罪现场身份本体
Pub Date : 2017-03-01 DOI: 10.1109/SECON.2017.7925329
Marguerite McDaniel, Emma Sloan, William Nick, James Mayes, A. Esterline
Our interests are in establishing the identity of agents in physical and cyber environments and determining how evidence in cases support identity judgments. Current work centers on physical evidence from a crime scene; however, what is presented is a computational framework that expands to the cyber world. Part of the project's foundation is based on Barwise's situation theory because it joins semantics for utterances and accounts of perceptions. Situations both support items of information and carry information about other situations. Specifically, an utterance situation contains information about a described situation. We provide an account of the support for an identity judgment (in an id-situation) that essentially builds cases (aligned to legal cases) called id-cases, because significant cases of identity can lead to various situations that impact the value of evidence. Our framework includes a situation ontology, upon which an id-situation ontology is built. While focusing on physical evidence, we also developed a physical biometrics ontology, which the physical features ontology supports. Additionally, there is a law enforcement ontology and several supporting stubs. We show how a specific case is encoded in RDF in alignment with our ontologies, and complement our id-situation ontology with SWRL rules to infer a culprit in a crime scene.
我们的兴趣是在物理和网络环境中建立代理人的身份,并确定案件中的证据如何支持身份判断。目前的工作集中在犯罪现场的物证上;然而,所呈现的是一个扩展到网络世界的计算框架。该项目的部分基础是基于Barwise的情境理论,因为它将话语的语义和感知的描述联系起来。情景既支持信息项,也携带有关其他情景的信息。具体来说,话语情境包含了被描述情境的信息。我们提供了对身份判断(在身份情况下)的支持的说明,该判断本质上构建了称为身份情况的案件(与法律案件一致),因为重大的身份案件可能导致影响证据价值的各种情况。我们的框架包括一个情境本体,在此基础上构建一个id-情境本体。在关注物理证据的同时,我们还开发了物理特征本体支持的物理生物识别本体。此外,还有一个执法本体和几个支持存根。我们展示了如何按照我们的本体用RDF编码特定的案例,并用SWRL规则补充我们的id-situation本体,以推断犯罪现场的罪犯。
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引用次数: 8
Sequential state logic for pneumatic valve monitoring using piezo film sensors 顺序状态逻辑气动阀监测使用压电薄膜传感器
Pub Date : 2017-03-01 DOI: 10.1109/SECON.2017.7925279
Mithun Yerra, A. Nasipuri, Heinz Duemmler
This paper presents an approach to monitor actuation events of pneumatic valves using piezo film sensors. These sensors are very low-cost, flexible, wide-band, and are ideally suited to acquire acoustic signals non-intrusively from the valve. Event-specific signal signatures based on the envelope of the sensor signals are used to determine the behavior of the valves under operation. A sequential state logic is developed to detect the signatures for normal valve events. All design considerations are derived from experimental data obtained from a laboratory testbed. The performance results, including analysis of signals at various stages of the algorithm are presented using MATLAB.
提出了一种利用压电薄膜传感器监测气动阀门动作的方法。这些传感器非常低成本,灵活,宽带,非常适合从阀门非侵入性地获取声学信号。基于传感器信号包络的事件特定信号签名用于确定阀门在运行时的行为。开发了顺序状态逻辑来检测正常阀门事件的签名。所有的设计考虑都是从实验室试验台获得的实验数据中得出的。利用MATLAB给出了算法的性能结果,包括各阶段的信号分析。
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引用次数: 0
Radiation pressure on core-shell nanoparticles in Rayleigh regime 瑞利区核壳纳米颗粒的辐射压力
Pub Date : 2017-03-01 DOI: 10.1109/SECON.2017.7925345
Mohammad Habibur Rahaman, Md Saber Nazim, B. Kemp
The radiation pressure to the single and multiple core-shell nanoparticles using Rayleigh scattering theory is presented. The force on a single core-shell nanoparticle with different material compositions for core and shell is demonstrated. The metal shell having frequency dependent permittivity gives plasmonic resonance at a certain frequency. The force in both resonance and off-resonance condition of silver and gold shell is also shown. The total force on single core-shell nanoparticle is also validated using Mie scattering theory. For the case of multiple core-shell nanoparticles, the discrete dipole approximation (DDA) was used. The approximate force calculation on aggregates of multiple core-shell nanoparticles can be useful for wide variety of applications.
利用瑞利散射理论计算了单核-壳纳米粒子和多核-壳纳米粒子的辐射压力。研究了不同核壳材料组成的单核壳纳米粒子的受力特性。具有频率相关介电常数的金属壳在一定频率下产生等离子体共振。并给出了银壳和金壳在共振和非共振条件下的受力。用Mie散射理论验证了单核-壳纳米粒子的总力。对于多核壳纳米粒子,采用离散偶极子近似(DDA)。对多核-壳纳米粒子聚集体的近似力计算可用于各种各样的应用。
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引用次数: 3
Enabling a National Instruments DaNI 2.0 robotic development platform for the Robot Operating System 为机器人操作系统启用美国国家仪器公司DaNI 2.0机器人开发平台
Pub Date : 2017-03-01 DOI: 10.1109/SECON.2017.7925293
Benjamin B. Rhoades, Jeremy P. Sabo, J. Conrad
Robotic research has recently undergone a paradigm shift as robots have switched from fixed factory floors to more mobile based platforms. This shift has presented many new challenges to the robotic research community. Development of novel robot bases, such as TurtleBot, in concert with the widespread use of robotic frameworks, such as Robot Operating System and MyRobotlab, has given researchers indispensable tools that allows for rapid development and deployment of new localization and mapping techniques. The goal of these new robot bases and frameworks is to ensure that progression in research is not hindered by the burden of lower abstractions, such as sensory setup or drive mechanisms and mechanics, but rather allows the researcher to focus on the complexity of executing higher level algorithms. This paper presents research on integrating the National Instruments DaNI 2.0 robot into the growing group of robot operating system ready mobile robot platforms. This paper presents the programming and developmental process of enabling the DaNI 2.0 robot to operate within the Robot Operating System framework and highlights the chief characteristics that separate the DaNI 2.0 from current Robot Operating System enabled robotic platforms.
随着机器人从固定的工厂车间转向更灵活的平台,机器人研究最近经历了一次范式转变。这种转变给机器人研究界带来了许多新的挑战。新型机器人基地的发展,如TurtleBot,以及机器人框架的广泛使用,如机器人操作系统和MyRobotlab,为研究人员提供了不可或缺的工具,可以快速开发和部署新的定位和地图技术。这些新的机器人基础和框架的目标是确保研究的进展不会受到较低抽象的负担的阻碍,例如感官设置或驱动机制和力学,而是允许研究人员专注于执行更高级别算法的复杂性。本文研究了将美国国家仪器公司的DaNI 2.0机器人集成到越来越多的机器人操作系统就绪的移动机器人平台中。本文介绍了使DaNI 2.0机器人能够在机器人操作系统框架内运行的编程和开发过程,并强调了将DaNI 2.0与当前启用机器人操作系统的机器人平台分开的主要特征。
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引用次数: 9
Empirical mode decomposition of EEG signals for brain computer interface 脑机接口脑电信号的经验模态分解
Pub Date : 2017-03-01 DOI: 10.1109/SECON.2017.7925341
MD Erfanul Alam, B. Samanta
Motor imagery (MI) based brain-computer interface (BCI) systems show potential applications in neural rehabilitation. In MI-BCI systems, the brain signals from movement imagination, without actual movement of limbs, can be acquired, processed and characterized to translate into actionable signals that can be used to activate external devices. However, success of such MI-BCI systems, depends on the reliable processing of the noisy, non-linear, and non-stationary brain activity signals for extraction of characteristic features for effective classification of MI activity and translation into corresponding actions. In this work, a signal processing technique, namely, empirical mode decomposition (EMD), has been proposed for processing EEG signals acquired from volunteer subjects for characterizing MI activities and activity identification.
基于运动图像(MI)的脑机接口(BCI)系统在神经康复中具有潜在的应用前景。在MI-BCI系统中,来自运动想象的大脑信号,无需肢体的实际运动,可以被获取、处理和表征,转化为可操作的信号,用于激活外部设备。然而,这种MI- bci系统的成功取决于对有噪声、非线性和非平稳的大脑活动信号进行可靠的处理,以提取特征特征,从而有效地分类MI活动并将其转化为相应的动作。在这项工作中,我们提出了一种信号处理技术,即经验模式分解(EMD),用于处理志愿者获得的脑电信号,以表征MI活动和识别活动。
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引用次数: 8
The effect of variable speed wind turbines on a 21 bus power system 变速风力发电机对21母线电力系统的影响
Pub Date : 2017-03-01 DOI: 10.1109/SECON.2017.7925362
Brandon Parker, S. Blevins, Michael Facemire, K. Hatipoglu
The purpose of this paper is to study the effects of variable speed wind turbines (VSWTs) on a power system. The power system model used for this study is the IEEE 21 Bus System. Each system, one powered solely by the diesel powered synchronous generators (DPSGs), and the other powered by both VSWTs and a DPSG, were tested under different conditions including a three phase fault, line outage/break, and load changes. To be able to analyze and simulate these conditions the Power System Analysis Toolbox (PSAT) was used along with Matlab. This paper will begin by giving a brief introduction about variable speed wind turbines. Also, the advantages and disadvantages using wind turbines in the power grid will be discussed. The introduction will conclude by comparing VSWTs to their counterpart, constant speed wind turbines. Many conclusions could be drawn from the tested conditions stated above. When the system with VSWTs was faulted, it resembled the behavior of the diesel generator system. However, when a line outage was applied to the system with VSWTs, it did not behave as expected like the diesel generator system did. Also, when a load is dropped, the generator bus voltage tends to rise.
本文的目的是研究变速风力发电机组对电力系统的影响。本研究使用的电力系统模型是IEEE 21总线系统。每个系统,一个由柴油同步发电机(DPSG)供电,另一个由vswt和DPSG供电,在不同的条件下进行了测试,包括三相故障、线路中断和负载变化。为了能够分析和模拟这些条件,电力系统分析工具箱(PSAT)与Matlab一起使用。本文将首先简要介绍变速风力发电机。此外,将讨论在电网中使用风力涡轮机的优点和缺点。引言将通过比较vswt和恒速风力涡轮机来结束。从上述测试条件中可以得出许多结论。当带vswt的系统发生故障时,其行为类似于柴油发电系统。然而,当将线路中断应用于具有vswt的系统时,它的行为并不像柴油发电机系统那样预期。此外,当负载下降时,发电机母线电压趋于上升。
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引用次数: 2
Progress on a testbed for time-modulated arrays 时调制阵列试验台的研究进展
Pub Date : 2017-03-01 DOI: 10.1109/SECON.2017.7925301
Addison J. Ford, W. Barott, Kevin M. Scott
This paper discusses the development of a testbed for real-time experimental studies of time-modulated arrays. The proposed architectural design will be described, and the current state of progress will be presented through simulation and over-the-air tests conducted in a lab. The TMA antennas and radios are designed to operate at about 2.3 GHz for a target application of passive radar using XM Radio, in which the TMA capabilities will be targeted at multibeaming and interference suppression.
本文讨论了时调制阵列实时实验研究试验台的研制。本文将描述拟议的架构设计,并通过在实验室中进行的模拟和空中测试来展示当前的进展状态。TMA天线和无线电被设计为工作在2.3 GHz左右,用于使用XM无线电的无源雷达目标应用,其中TMA能力将针对多束和干扰抑制。
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引用次数: 0
Interference suppression using repeated reduced rank adaptive filtering in Fractional Fourier Transform domains 基于分数阶傅里叶变换域的重复降阶自适应滤波干扰抑制
Pub Date : 2017-03-01 DOI: 10.1109/SECON.2017.7925327
S. Sud
The Fractional Fourier Transform (FrFT) is a powerful tool that cancels interference and noise in non-stationary, real-world, environments to pull out a signal-of-interest (SOI). This requires estimation of the best rotational parameter ‘a’ to rotate the signal to a new domain along an axis ‘ta’ for filtering. The value of ‘a’ is usually chosen to give the minimum mean-square error (MMSE) between the desired SOI and its estimate. Recently, a technique was presented that uses repeated MMSE-FrFT filtering. This is done with a training sequence using mean-square error (MSE) as the metric by which to compute ‘a’ at each stage. This simple approach improves performance over conventional single stage MMSE-FrFT methods or methods based solely on filtering in frequency using an FFT. In this paper we apply repeated reduced rank adaptive filtering using a multistage Wiener filter (MWF). We show that the proposed MMSE-MWF-FrFT repeated filtering method significantly reduces the MSE over the repeated MMSE-FrFT method typically with just L = 1 or 2 stages and a nominal filter rank, D = 5, vs. L = 3 for MMSE. This is demonstrated by simulation using non-stationary channels as well as two types of non-stationary interference: chirp and Gaussian signals, at signal-to-noise ratios (SNRs) as low as 0 dB and carrier-to-noise ratios (CIRs) also down to 0 dB. Reduction in MSE from 0.001 to 10−4 or 10−5, or lower, is observed.
分数阶傅里叶变换(FrFT)是一种强大的工具,可以消除非平稳、真实环境中的干扰和噪声,从而提取感兴趣信号(SOI)。这需要估计最佳旋转参数“a”,以沿轴“ta”将信号旋转到一个新的域进行滤波。通常选择“a”的值来给出期望SOI与其估计之间的最小均方误差(MMSE)。最近,提出了一种使用重复MMSE-FrFT滤波的技术。这是通过使用均方误差(MSE)作为度量来计算每个阶段的“a”的训练序列来完成的。这种简单的方法比传统的单级MMSE-FrFT方法或仅基于使用FFT进行频率滤波的方法提高了性能。本文采用多级维纳滤波器(MWF)进行重复降阶自适应滤波。我们表明,与重复MMSE- frft方法相比,所提出的MMSE- mwf - frft重复滤波方法显著降低了MSE,通常只有L = 1或2级和名义滤波器等级D = 5,而MMSE的L = 3。这可以通过使用非平稳通道以及两种类型的非平稳干扰(啁啾和高斯信号)进行仿真来证明,信噪比(SNRs)低至0 dB,载波噪声比(cir)也低至0 dB。观察到MSE从0.001降低到10−4或10−5,或更低。
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引用次数: 1
Utilization of XBee ZigBee modules and MATLAB for RSSI localization applications 利用XBee ZigBee模块和MATLAB实现RSSI定位应用
Pub Date : 2017-03-01 DOI: 10.1109/SECON.2017.7925305
Sam Shue, Lauren E. Johnson, J. Conrad
Localization is an important attribute for wireless sensor networks. Received signal strength indicator (RSSI) can be used to estimate distance between transceivers. Using these estimated distances, location of nodes within a network can be determined using various localization algorithms, such as trilateration. For implementation and testing of localization techniques, utilizing a sensor network development platform reduces time and difficulty during the process. Here we present a platform based on XBee ZigBee wireless modules, Arduino, and MATLAB for algorithm testing and debugging. For validation of this platform, a trilateration localization method is implemented.
定位是无线传感器网络的一个重要属性。接收信号强度指示器(RSSI)可以用来估计收发器之间的距离。使用这些估计的距离,可以使用各种定位算法确定网络中节点的位置,例如三边测量。对于定位技术的实现和测试,利用传感器网络开发平台减少了过程中的时间和难度。本文提出了一个基于XBee ZigBee无线模块、Arduino和MATLAB的算法测试与调试平台。为了验证该平台的有效性,实现了一种三边定位方法。
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引用次数: 22
Significance of randomness in establishing hotspots in crystals 晶体中建立热点的随机性的意义
Pub Date : 2017-03-01 DOI: 10.1109/SECON.2017.7925394
M. Chen, M. Steer, M. Zikry
Microwave scattering in random mediums is known to result in localized energy concentrations known as hotspots. However, the mechanics behind this effect are not well understood. Abstractions are needed to manage the complexity required to develop understanding through simulation and lead to the establishment of the parameters for a microwave system to neutralize energetic materials. Here, two random contributions of rotation and translation are separately simulated. It is observed that the individual effects both contribute to localization, and the combined effect is greater than the sum of the individuals.
随机介质中的微波散射已知会导致局部能量集中,称为热点。然而,这种效应背后的机制还没有得到很好的理解。需要抽象来管理通过模拟发展理解所需的复杂性,并导致建立微波系统中和含能材料的参数。这里分别模拟了旋转和平移的两种随机贡献。结果表明,个体效应对局部化都有贡献,且个体效应的总和大于个体效应的总和。
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引用次数: 0
期刊
SoutheastCon 2017
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