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2018 IEEE 4th International Forum on Research and Technology for Society and Industry (RTSI)最新文献

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Pedestrian Tracking in 360 Video by Virtual PTZ Cameras 虚拟PTZ摄像机在360视频中的行人跟踪
Vito Monteleone, Liliana Lo Presti, M. Cascia
Since the data acquired by a PTZ camera change while adjusting the pan, tilt and zoom parameters, the results of tracking algorithms are difficult to reproduce; such difficulty limits the development and the comparison of tracking algorithms with PTZ cameras. The recently introduced 360-degree cameras acquire spherical views of the environment, generally stored as equirectangular images. Each pixel of an equirectangular image corresponds to a point on the spherical surface. A gnomonic projection can be used to project the points on the spherical surface onto a plane tangent to the sphere. Such tangent plane can be interpreted as the image plane of a virtual PTZ camera oriented towards the point of tangency. This paper proposes a framework to simulate PTZ cameras from 360-degree video enabling, in this way, the development and comparison of PTZ-based tracking algorithms. Furthermore, within the above mentioned framework, this paper presents a novel pedestrian tracking algorithm for 360-degree videos. The proposed algorithm aims at estimating the pan, tilt and zoom parameters required to control the virtual camera in such a way that the target is always at the center of the virtual camera view. The proposed method belongs to the category of tracking-by-detection algorithms; it also exploits the use of a dynamic memory to store the appearance models of the best past target detections. Preliminary results on a publicly available benchmark demonstrate the viability of the proposed approach.
由于PTZ相机在调整平移、倾斜和变焦参数时采集的数据会发生变化,因此跟踪算法的结果难以重现;这种困难限制了跟踪算法的发展和与PTZ相机的比较。最近推出的360度摄像头获取环境的球形视图,通常以等矩形图像的形式存储。等矩形图像的每个像素对应于球面上的一个点。椭圆投影可用于将球面上的点投影到与球体相切的平面上。这样的切平面可以解释为一个虚拟PTZ相机的图像平面面向切点。本文提出了一个从360度视频模拟PTZ摄像机的框架,从而实现了基于PTZ的跟踪算法的开发和比较。此外,在上述框架下,本文提出了一种新的360度视频行人跟踪算法。该算法旨在估计控制虚拟摄像机所需的平移、倾斜和缩放参数,以使目标始终处于虚拟摄像机视图的中心。该方法属于检测跟踪算法的范畴;它还利用动态存储器来存储过去最佳目标检测的外观模型。在一个公开可用的基准上的初步结果证明了所提出方法的可行性。
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引用次数: 6
Analytical Approach to the Calculation of Parasitic Capacitance Between Winding Turns 绕组匝间寄生电容计算的解析方法
A. Massarini
At high frequencies, winding components behave differently than at low frequencies. Therefore, suitable models are required which can predict coil performances over the whole possible range of frequencies they can be operated. Inductors used in power electronic conversion, magnetic sensors, EMC equipments, and also motor windings can experience frequency levels above several hundreds of kHz where parasitic resistance and capacitance can affect significantly their intended operation. One of the main problems is modeling turn-to-turn capacitance of coils both for single- and multiple-layer windings. The lumped parameter models used in literature for HF inductor simulation are based on simplified approaches to the turn-to-turn and turn-to-core capacitance calculation. In this paper, an analytical approach based on conformal mapping to calculate the exact solution for the turn-to turn and turn-to-core capacitances for coils with different geometrical structures is introduced.
在高频时,绕组元件的行为与低频时不同。因此,需要合适的模型来预测线圈在整个可能频率范围内的性能。用于电力电子转换,磁传感器,EMC设备和电机绕组的电感器可以经历数百kHz以上的频率水平,其中寄生电阻和电容可以显着影响其预期操作。其中一个主要问题是对单层和多层线圈的匝间电容进行建模。文献中用于高频电感仿真的集总参数模型是基于匝间和匝间电容计算的简化方法。本文介绍了一种基于保角映射的解析方法,用于计算不同几何结构线圈匝间电容和匝间电容的精确解。
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引用次数: 7
A Non-Local Mode-I Cohesive Model for Ascending Thoracic Aorta Dissections (ATAD) 胸升主动脉夹层(ATAD)的非局部模型- i内聚模型
G. Alotta, E. Bologna, M. D. Giuseppe, M. Zingales, R. Dimitri, F. P. Pinnola, G. Zavarise
This paper presents a non-local interface mechanical model to describe aortic dissection. In this regard, the mode-I debonding problem based on a cohesive zone modeling is endowed with non-local terms to include long-range interactions that are present in multi-layered biological tissue. Such non-local effects are related to the collagen fibers that transmit forces between non-adjacent elements. Numerical simulations are provided with different values of the non-local parameters in order to show the effect of the non-locality during the debonding processes.
本文提出了一种描述主动脉夹层的非局部界面力学模型。在这方面,基于内聚区建模的i型脱粘问题被赋予非局部术语,以包括存在于多层生物组织中的远程相互作用。这种非局部效应与胶原纤维在非相邻元素之间传递力有关。数值模拟采用不同的非局域参数值,以显示非局域参数对脱粘过程的影响。
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引用次数: 2
Using Systems of Systems to Manage Enterprise Contacts 使用系统中的系统管理企业联系人
Gregory Moro Puppi Wanderley, Marie-Hélène Abel, J. Barthès, E. Paraiso
This paper discusses how one could use a Systems of Systems Approach to manage contacts inside an enterprise. The major problem is the interoperability of existing systems in charge of handling information regarding addresses. We show how an MBA (Memory-Broker-Agent) approach could help to design a global system.
本文讨论了如何使用系统的系统方法来管理企业内部的联系人。主要问题是负责处理地址信息的现有系统的互操作性。我们将展示如何使用MBA(内存-代理-代理)方法来帮助设计全局系统。
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引用次数: 0
Structural and Optical Behaviour of MAPbI3 Layers in Nitrogen and Humid Air MAPbI3层在氮气和潮湿空气中的结构和光学行为
A. Alberti, G. Mannino, I. Dreretzis, E. Smecca, S. Sanzaro, A. Magna, Y. Numata, T. Miyasaka
The tendency of MA+-containing perovskites to degradation under humid air is still the main challenge which limits the durability of technologies. We indeed frame the behavior of MAPbI3 layer through structural and optical characterization under thermal cycles and using the environmental composition as a variable parameter (humid air, N2, Ar, O2). Within the temperature range explored (RT-80°C) we likely approach the thermal operation of the material under the sun and find that the degradation mechanism is linked to the action of water molecules by the formation of lattice defects. They rise the lattice disorder, especially at the crossover of the tetragonal to cubic transition wherein an acceleration of the degradation kinetics is observed. Nitrogen can help rationalizing solutions to stabilize the materials even at this critical transition step, since it behaves as more than an inert species.
含MA+的钙钛矿在潮湿空气中的降解趋势仍然是限制技术耐久性的主要挑战。我们确实通过热循环下的结构和光学表征以及使用环境成分作为可变参数(潮湿空气,N2, Ar, O2)来构建MAPbI3层的行为。在探索的温度范围内(RT-80°C),我们可能接近材料在太阳下的热操作,并发现通过形成晶格缺陷,降解机制与水分子的作用有关。它们增加了晶格的无序性,特别是在四方向三次转变的交叉处,其中观察到降解动力学的加速。即使在这个关键的过渡阶段,氮也可以帮助合理的解决方案来稳定材料,因为它的行为不仅仅是一种惰性物质。
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引用次数: 1
Chemical Bath Deposition as a Simple Way to Grow Isolated and Coalesced ZnO Nanorods for Light-Emitting Diodes Fabrication 化学浴沉积是一种生长分离和聚结ZnO纳米棒的简单方法,用于制造发光二极管
M. Mosca, I. Crupi, D. Russotto, G. Lullo, R. Macaluso, Giuseppe Costantino Giaconia, S. Mirabella, E. Feltin
A way to grow and characterize isolated and coalesced ZnO nanorods on $p$-GaN/sapphire structure is presented. Chemical bath deposition can be used to grow ZnO nanorods of device-quality, simply controlling the duration time of the growth process and the concentration of the nutrient solution in the bath. Increasing the duration of the process, as well as the concentration of the solution, leads to compact and sound layers instead of separated nanorods. However, too high concentrations stop the growth process. Light-emitting diodes fabricated on these ZnO-p-GaN heterostructure have a peak of electroluminescence at 400 nm and exhibit interesting electrical and optical properties. Optical power of 225 µW at 0.425 $A$/cm2and a related wall-plug efficiency of 0.23% are obtained with 2 mm-diameter LEDs fabricated on a ZnO layer grown for 30 h in a solution of concentration 70 mM. The performances shown by these LEDs can be used as a way to test the quality of the ZnO growth.
提出了一种在$p$-GaN/蓝宝石结构上生长和表征分离和聚结ZnO纳米棒的方法。化学浴沉积可以用来生长具有器件质量的ZnO纳米棒,只需控制生长过程的持续时间和浴槽中营养液的浓度即可。增加这一过程的持续时间,以及溶液的浓度,就会产生致密而健全的层,而不是分离的纳米棒。然而,浓度过高会阻碍生长过程。在这些ZnO-p-GaN异质结构上制备的发光二极管在400 nm处具有电致发光峰,并表现出有趣的电学和光学特性。在浓度为70 mM的溶液中,在ZnO层上生长30 h,制备的直径为2mm的led光功率为225µW,光功率为0.425 $A$/cm2, wall-plug效率为0.23%。这些led所显示的性能可以用来测试ZnO生长的质量。
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引用次数: 2
Towards an Electronic Medical Record for Precision Oncology: Information and Knowledge Management 迈向精确肿瘤学电子病历:信息和知识管理
N. Maggi, C. Ruggiero, M. Giacomini
Paper medical records are still widely used in Italian hospitals and their use contributes to the reduced efficiency of the clinical process. Appropriate standards can improve the functioning of Health Information Technology and contribute to the improvement of quality and patient safety. A global architecture scheme was implemented by harmonising health services as proposed by HL7 to achieve interoperability between distributed and heterogeneous applications and devices belonging to independent organisations. A client application was developed that led to the improvement of the quantity and quality of information that may be relevant for the treatment of patients suffering from colorectal cancer. A tailoring application was designed and developed to meet the needs of medical personnel, especially as regards the management of visits, and the creation of a clinical diary in compliance with the standards currently in use. This work is the basis for an integration of medical records and genomic data that can lead to an improvement in cancer prevention, diagnosis, prognosis and treatment (precision oncology).
纸质病历仍在意大利医院广泛使用,它们的使用导致了临床过程效率的降低。适当的标准可以改善卫生信息技术的功能,并有助于提高质量和患者安全。通过协调HL7提出的医疗服务,实现了一个全球架构方案,以实现分布式和异构应用程序与属于独立组织的设备之间的互操作性。开发了一个客户端应用程序,提高了可能与结肠直肠癌患者治疗相关的信息的数量和质量。为满足医务人员的需要,特别是在管理访问和按照目前使用的标准创建临床日记方面,设计和开发了一种定制应用程序。这项工作是整合医疗记录和基因组数据的基础,可以改善癌症的预防、诊断、预后和治疗(精确肿瘤学)。
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引用次数: 3
Italian 5G Trials: A Vertical View 意大利5G试验:垂直视角
A. Napolitano, F. Giannone, F. Civerchia, K. Kondepu, G. Cecchetti, A. L. Ruscelli, L. Valcarenghi, P. Castoldi
This paper first overviews the verticals supported by 5G technology in the 5G trial site of Bari and Matera. Such services will operate in the 3.6 - 3.8 GHz radio spectrum released by Italian Ministry of Economic Development for precommercial services. Special focus will be on use cases related to road safety. The issues and the possible solutions for implementing a pedestrian awareness service based on vehicle-to-pedestrian communication will be highlighted.
本文首先概述了Bari和Matera 5G试验场5G技术支持的垂直领域。这些服务将在意大利经济发展部发布的用于商用前服务的3.6 - 3.8 GHz无线电频谱上运行。将特别关注与道路安全相关的用例。本文将重点介绍在车辆与行人通讯的基础上实施行人感知服务的问题和可能的解决方案。
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引用次数: 1
BlAsT: Blockchain-Assisted Key Transparency for Device Authentication BlAsT:用于设备认证的区块链辅助密钥透明度
Alessandro Gattolin, C. Rottondi, G. Verticale
BlAsT is an efficient scheme for achieving certification of data continuity through a history attached to a public blockchain. The scheme guarantees the properties of linearity, non-equivocation, time-stamping and transparency. We discuss the implementation of BlAsT over the Bitcoin and the Ethereum blokchains, provide a techno-economic analysis to evaluate the costs related to blockchain adoption, and numerically assess the performance of the proposed architecture in terms of storage and bandwidth requirements. Results show that the above properties can be guaranteed with a small cryptocurrency payment. The proposed scheme can be used for IoT devices under the assumption that the device is able to either perform blockchain validation or delegate it to a trusted node.
BlAsT是一种有效的方案,通过附加在公共bbb上的历史记录来实现数据连续性认证。该方案保证了线性、不模糊、时间戳和透明性。我们讨论了BlAsT在比特币和以太坊区块链上的实现,提供了技术经济分析来评估与区块链采用相关的成本,并在存储和带宽要求方面对拟议架构的性能进行了数值评估。结果表明,用少量的加密货币支付就可以保证上述属性。提出的方案可以用于物联网设备,假设设备能够执行区块链验证或将其委托给可信节点。
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引用次数: 3
A Locally Recurrent Neural Network Based Approach for the Early Fault Detection 基于局部递归神经网络的早期故障检测方法
S. Carcangiu, A. Montisci
In this work, a fault detection approach for diagnosis of nonlinear systems is presented. This diagnostic approach is performed resorting to a neural predictor of the output of the system, and by using the error prediction as a feature for the diagnosis. The neural predictor is a locally recurrent neural network, which is dynamically trained by using a gradient-based algorithm, where the gradient of the error function is expressed in closed form. The residuals of the prediction are affected by the deviation of the parameters from their nominal values, so that an early detection of the faults can be performed by observing the dynamic of the residuals. The Willamoski-Rossler reaction is used as case study in order to validate the diagnostic approach.
本文提出了一种用于非线性系统诊断的故障检测方法。这种诊断方法是借助于系统输出的神经预测器,并通过使用误差预测作为诊断的特征来执行的。神经预测器是一种局部递归神经网络,采用基于梯度的算法进行动态训练,其中误差函数的梯度以封闭形式表示。预测的残差会受到参数与标称值偏差的影响,因此可以通过观察残差的动态变化来早期发现故障。Willamoski-Rossler反应被用作案例研究,以验证诊断方法。
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引用次数: 2
期刊
2018 IEEE 4th International Forum on Research and Technology for Society and Industry (RTSI)
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