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2014 Eighth International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing最新文献

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Towards Implementing Web-Based Adaptive Application Mobility Using Web Real-Time Communications 利用Web实时通信实现基于Web的自适应应用程序移动性
Dan Johansson, Mikael Holmgren
Application mobility is a subcategory of service mobility, being defined as the process of migrating applications between different hosts during application execution. In this paper we present a decentralized architecture for web-based adaptive application mobility, using the WebRTC framework. To the best of our knowledge, our proposal is the first of its kind within the area. It is our purpose to show the feasibility of a decentralized system for web-based adaptive application mobility, and present WebRTC as a strong facilitator of that idea.
应用程序迁移是服务迁移的一个子类,定义为在应用程序执行期间在不同主机之间迁移应用程序的过程。在本文中,我们使用WebRTC框架,提出了一种基于web的自适应应用程序移动性的分散架构。据我们所知,我们的建议是该地区的第一个。我们的目的是展示基于web的自适应应用程序移动性的分散系统的可行性,并将WebRTC作为该想法的强大促进者。
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引用次数: 1
Fast Multi-line Detection and Tracking with CUDA for Vision-Based UAV Autopilot 基于CUDA的基于视觉的无人机自动驾驶仪快速多线检测与跟踪
V. Tyan, Doohyun Kim, Young-guk Ha, Dongwoon Jeon
This paper introduces an algorithm for fast multi line tracking utilizing the GPUs (Graphic Processing Units). Video stream contains huge of information for manipulating the vehicle by itself. It is a sort of big data to analyze properly in real-time for autonomous flight. However, image processing is heavy work for computing unit which is equipped on small unmanned aerial vehicle. This paper presents feasible image processing system for vision based intelligent vehicle. The proposed techniques for multi-line tracking are Hough transform, Kalman filter and clustering with GPUs. Integration of these methods has advantages to reduce the computational load by prediction of next state during the tracking and being robust for noise and rapid change of line's position. Hough transform used for extraction of lines while the Kalman filter predicts future state. Hough transform is easy to implement and robust for noise, on the other hand, the resource consumption raises exponentially as the resolution of input image or when we need high precision in Hough space. One of the efficient ways to overcome this speed problem is performing image processing with GPU's massive parallel calculation capabilities. Performance evaluations show promising results with acceptable trade-off between speed and accuracy of algorithm. Improving in speed algorithm keeps accurate tracking in comparison with algorithm implementation on CPU that is unable to track and detect lines fast enough due to computation resource limitations. Experiments and performance analysis of algorithm verified with user-made multi lines.
本文介绍了一种利用图形处理器(gpu)实现快速多线跟踪的算法。视频流包含了大量的信息,可供车辆自行操作。这是一种需要对自主飞行进行实时分析的大数据。然而,对于小型无人机上的计算单元来说,图像处理是一项繁重的工作。提出了一种可行的基于视觉的智能汽车图像处理系统。提出的多线跟踪技术有霍夫变换、卡尔曼滤波和gpu聚类。这些方法相结合的优点是在跟踪过程中通过预测下一状态来减少计算量,对噪声和线路位置的快速变化具有较强的鲁棒性。霍夫变换用于提取线条,卡尔曼滤波用于预测未来状态。霍夫变换易于实现,对噪声具有鲁棒性,但随着输入图像分辨率的提高或对霍夫空间精度要求的提高,霍夫变换对资源的消耗呈指数级增长。克服这个速度问题的有效方法之一是利用GPU的大规模并行计算能力进行图像处理。性能评估表明,算法在速度和精度之间取得了令人满意的平衡。相对于CPU上的算法实现由于计算资源的限制而无法足够快地跟踪和检测行,在速度上的改进使算法保持了准确的跟踪。实验和性能分析验证了算法与用户自制的多线。
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引用次数: 7
The Information Sharing System Using Web-GIS at the Time of Wide-Scale Disaster 大规模灾害时基于Web-GIS的信息共享系统
Tomoyuki Ishida, K. Takahagi, Y. Shimizu, Akira Sakuraba, Noriki Uchida, Y. Shibata
Each local government dispatches the municipal employee to the disaster site in order to check on the damage at the time of wide-scale disaster. The municipal employee take damage images with a digital camera etc., and bring image data back to the disaster countermeasures headquarters. Then, the municipal employee project damage images on a projector and report damage situations. However, this method takes much time for the disaster countermeasures headquarters to grasp damage situations. This may be unable to take a prompt action to disaster sites. In this research, we built the system which reports damage situations to the disaster countermeasures headquarters quickly at the time of wide-scale disaster. In this system, the images and animations of the disaster are automatically mapped on Web-GIS in real time. Thereby, users become possible confirming damage situations at one view from Web-GIS.
在大范围的灾难发生时,每个地方政府都派遣市政工作人员到灾难现场检查破坏情况。市政工作人员用数码相机等拍摄灾情图像,并将图像数据传回灾害应对指挥部。然后,市政工作人员将损坏图像投射到投影仪上,并报告损坏情况。但是,这种方法对于灾害对策总部掌握灾害情况需要花费大量时间。这样可能无法及时采取行动到灾难现场。在本研究中,我们建立了在大规模灾害发生时快速向灾害对策总部报告灾情的系统。该系统将灾害的图像和动画实时自动映射到Web-GIS上。因此,用户可以从Web-GIS的一个视图中确认损坏情况。
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引用次数: 4
An Exercise Data Logging System for Retrofitting Gym Equipment 一种用于健身器材改造的运动数据记录系统
C. Patch, K. F. Li, B. Gooch
Working out at a gym is a favorite pastime for many people these days. To gain a competitive edge, many gyms have installed systems to log exercise data. An individual's exercise data can be used to track personal progress, as well as to provide positive feedback and motivation. The majority of these recorded data comes from rotation based exercise equipment, such as stationary bikes, treadmills, ellipticals, and rowing machines, because it is easy to log data with rotational sensors or electromechanical resistance. To the best of our knowledge, there is currently no method of recording exercise data from gym equipment that utilizes weight stacks and pulleys as resistance. The objective of this work is to propose an exercise data logging system that collects data from retrofitted weight stack equipment using off-the-shelf sensors and microcontrollers. This data logger has been designed and implemented with a simple web-based user interface.
如今,在健身房锻炼是许多人最喜欢的消遣方式。为了获得竞争优势,许多健身房都安装了记录锻炼数据的系统。个人的锻炼数据可以用来跟踪个人的进步,也可以提供积极的反馈和动力。这些记录的数据大部分来自基于旋转的运动设备,如固定式自行车、跑步机、椭圆机和划船机,因为使用旋转传感器或机电电阻很容易记录数据。据我们所知,目前还没有一种方法可以记录使用负重堆和滑轮作为阻力的健身器材的运动数据。这项工作的目的是提出一种运动数据记录系统,该系统使用现成的传感器和微控制器从改装的重量堆叠设备收集数据。这个数据记录仪是用一个简单的基于web的用户界面设计和实现的。
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引用次数: 1
NFC Attacks Analysis and Survey NFC攻击分析与调查
C. Chen, I. Lin, Chou-Chen Yang
The NFC (Near Field Communication) became a popular short distance wireless communication technology by providing many convenient services such as an easy payment in a store. It has fast connection ability between devices and provides certain secure communication. However, after studying NFC protocols deeply, we found six threats to protecting the confidential data and users' privacy are unsolved. This paper summaries four standards of NFC protocols, and presents the security issues and unsolved privacy threats in current application environment.
NFC (Near Field Communication,近距离无线通信)通过提供在商店中轻松付款等许多便利的服务,成为流行的短距离无线通信技术。它具有设备间快速连接的能力,并提供一定的安全通信。然而,在深入研究NFC协议后,我们发现在保护机密数据和用户隐私方面的六个威胁尚未得到解决。总结了近场通信协议的四种标准,提出了当前应用环境中存在的安全问题和未解决的隐私威胁。
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引用次数: 21
ekoNET - Environmental Monitoring Using Low-Cost Sensors for Detecting Gases, Particulate Matter, and Meteorological Parameters ekoNET -使用低成本传感器检测气体,颗粒物和气象参数的环境监测
B. Pokric, S. Krco, D. Drajić, Maja Pokric, I. Jokic, Milena Jovaevic Stojanovic
This paper presents the environmental monitoring solution ekoNET, developed for a real-time monitoring of air pollution and other atmospheric condition parameters such as temperature, air pressure and humidity. The system is based on low-cost gas, PM and meteorological sensors providing cost-efficient, simple to deploy, use and maintain solution targeted for the usage within the Internet of Things domain of smart cities and smart enterprises. The paper gives an overview of the system architecture, encompassing the ekoNET device, back-end cloud infrastructure, data handling and visualization engine as well as the application-level components and modules. Furthermore, initial field trial data of twelve ekoNET devices is presented, enabling the overall system operation performance testing.
本文介绍了环境监测解决方案ekoNET,为实时监测空气污染和其他大气条件参数(如温度、气压和湿度)而开发。该系统基于低成本的气体、PM和气象传感器,为智能城市和智能企业的物联网领域提供了经济高效、易于部署、使用和维护的解决方案。本文概述了系统架构,包括ekoNET设备、后端云基础设施、数据处理和可视化引擎以及应用级组件和模块。此外,还介绍了12台ekoNET设备的初步现场试验数据,从而实现了系统整体运行性能测试。
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引用次数: 22
QoS Based Performance Evaluation for the Cooperative Communication Systems in Decode-and-Forward Mode 基于QoS的译码转发协作通信系统性能评价
J. Wen, Jheng-Sian Li, Cheng-Ying Yang, Yi-Shan Lin, Hsing-Chung Chen
This work considers the cooperative communication systems in Decode-and-Forward Mode. The scenario includes one source station, M relay stations and N destinations. In order to meet Quality of Service (QoS) guarantee, the individual capacity between the source station and the destination is considered under the worst case. However, for the whole system, the maximum throughput approaching is the major purpose in this work. Hence, to select the relay stations for signal transmission could be the important scheme to achieve the best system performance. Based on the exhaustive search method, easily to realize, the optimal selection scheme can be found with a highly complicated calculation. In order to reduce the computational complexity, a solution with a greedy algorithm applied to the relay selection scheme is proposed. With different situations of the communication systems, the performances evaluations obtained by both the proposed method and the exhaustive search method are given for comparison. It shows the proposed algorithm could provide a solution approaches to the optimal one. It is better to apply the proposed scheme when the number of relay stations is much larger than that of destination stations.
本文研究了译码转发模式下的协作通信系统。该方案包括1个源站、M个中继站和N个目的地。为了保证服务质量(QoS),考虑了最坏情况下源站和目的站之间的个体容量。然而,对于整个系统而言,最大吞吐量的逼近是本工作的主要目的。因此,选择中继站进行信号传输是实现系统最佳性能的重要方案。基于穷举搜索法的最优选择方案易于实现,但计算复杂度较高。为了降低计算复杂度,提出了一种将贪心算法应用于中继选择方案的解决方案。针对通信系统的不同情况,给出了该方法与穷举搜索方法的性能评价结果进行比较。结果表明,该算法可以为最优解提供一种求解方法。在中继站数量远大于目的站数量的情况下,采用本方案效果较好。
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引用次数: 0
A Dual-Path-Based Data Aggregation Scheme for Grid-Based Wireless Sensor Networks 基于网格的无线传感器网络双路径数据聚合方案
Neng-Chung Wang, Y. Chiang, Young-Long Chen, Chih-Hung Hsieh
In this paper, we propose a dual-path-based data aggregation scheme (DPBDAS) for grid-based wireless sensor networks (WSNs). We build a grid infrastructure by equally partitioning the whole sensor field into a grid of cells. The sensor nodes are randomly classified as type A and type B. All sensor nodes of type A and type B in the grid are further organized as group A and group B, respectively. Each cell has a head for each type. We construct dual paths by linking each cell head of each group, respectively. Each group has a leader randomly chosen from cell heads on its own path, responsible for directly transmitting the data to the base station (BS). For data gathering in each round, each cell head aggregates its own data with the data received from the other nodes of the same type in the cell and then transmits to the neighboring cell head toward its own leader. As a result, all gathered data are almost equally transmitted via dual paths so that the energy consumed by each sensor is approximately even. Besides, the group leader is randomly chosen among cell heads of its own path such that the energy load of each cell head is uniform. It greatly benefits the lifetime of the WSN. Simulation results show that the proposed DPBDAS extends the lifetime of sensor nodes so as to prolong the lifetime of the whole network.
在本文中,我们提出了一种基于网格的无线传感器网络(WSNs)的双路径数据聚合方案(DPBDAS)。我们通过将整个传感器场均匀地划分为细胞网格来构建网格基础设施。将传感器节点随机分为A类和B类。将网格中A类和B类传感器节点进一步组织为A组和B组。每个细胞对于每种类型都有一个头部。我们通过分别连接每一组的每个细胞头来构建双路径。每一组在自己的路径上都有一个从蜂窝头中随机选择的领导者,负责直接将数据传输到基站(BS)。对于每一轮的数据收集,每个cell head将自己的数据与从cell中其他相同类型的节点接收的数据聚合在一起,然后向自己的leader传输到相邻的cell head。因此,所有收集到的数据几乎均匀地通过双路径传输,因此每个传感器消耗的能量大致均匀。并且在自己路径上的细胞头中随机选择leader,使得每个细胞头的能量负荷是均匀的。这极大地提高了无线传感器网络的使用寿命。仿真结果表明,DPBDAS延长了传感器节点的生存期,从而延长了整个网络的生存期。
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引用次数: 0
Media Coverage and Stock Return an Impulse Response Analysis 媒体报道与股票收益的脉冲响应分析
Kuei-Yuan Wang, Chien-Kuo Chen, Hsiao-Chi Wei
This study utilized Vector Auto-regression method to investigate the impulse response effect. Our empirical results showed that the amount and signal of media coverage have impact on stock return. However, enterprises might release the fake news to attain some purposes. Hence, this study suggests that investors also should pay more attention to the truth of the media coverage while making the investment decisions.
本研究采用向量自回归方法研究脉冲响应效应。我们的实证结果表明,媒体报道的数量和信号对股票收益有影响。然而,企业发布假新闻可能是为了达到某种目的。因此,本研究建议投资者在进行投资决策时也应更加关注媒体报道的真实性。
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引用次数: 0
Extending Extensible Authentication Protocol over IEEE 802.15.4 Networks 在IEEE 802.15.4网络上扩展可扩展认证协议
M. P. Pawlowski, A. Jara, M. Ogorzałek
Internet into our physical world and making it present everywhere. This evolution is also raising challenges in issues such as privacy, and security. For that reason, this work is focused on the integration and lightweight adaptation of existing authentication protocols, which are able also to offer authorization and access control functionalities. In particular, this work is focused on the Extensible Authentication Protocol (EAP). EAP is widely used protocol for access control in local area networks such Wireless (802.11) and wired (802.3). This work presents an integration of the EAP frame into IEEE 802.15.4 frames, demonstrating that EAP protocol and some of its mechanisms are feasible to be applied in constrained devices, such as the devices that are populating the IoT networks.
互联网进入我们的物质世界,使其无处不在。这种演变也在隐私和安全等问题上提出了挑战。因此,这项工作的重点是现有身份验证协议的集成和轻量级改编,这些协议也能够提供授权和访问控制功能。特别地,这项工作的重点是可扩展身份验证协议(Extensible Authentication Protocol, EAP)。EAP是无线(802.11)和有线(802.3)等局域网中广泛使用的接入控制协议。这项工作将EAP帧集成到IEEE 802.15.4帧中,证明了EAP协议及其一些机制在受限设备(如填充物联网网络的设备)中是可行的。
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引用次数: 10
期刊
2014 Eighth International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing
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