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2011 6th International Conference on Industrial and Information Systems最新文献

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Heterogeneous processor pipeline for a product cipher application 异构处理器管道的产品密码应用程序
Pub Date : 2011-10-10 DOI: 10.1109/ICIINFS.2011.6038036
I. Nawinne, M. Wickramasinghe, R. Ragel, S. Radhakrishnan
Processing data received as a stream is a task commonly performed by modern embedded devices, in a wide range of applications such as multimedia (encoding/decoding/ playing media), networking (switching and routing), digital security, scientific data processing, etc. Such processing normally tends to be calculation intensive and therefore requiring significant processing power. Therefore, hardware acceleration methods to increase the performance of such applications constitute an important area of study. In this paper, we present an evaluation of one such method to process streaming data, namely multi-processor pipeline architecture. The hardware is based on a Multiple-Processor System on Chip (MPSoC), using a data encryption algorithm as a case study. The algorithm is partitioned on a coarse grained level and mapped on to an MPSoC with five processor cores in a pipeline, using specifically configured Xtensa LX3 cores. The system is then selectively optimized by strengthening and pruning the resources of each processor core. The optimized system is evaluated and compared against an optimal single-processor System on Chip (SoC) for the same application. The multiple-processor pipeline system for data encryption algorithms used was observed to provide significant speed ups, up to 4.45 times that of the single-processor system, which is close to the ideal speed up from a five-stage pipeline.
在多媒体(编码/解码/播放媒体)、网络(交换和路由)、数字安全、科学数据处理等广泛的应用中,处理作为流接收的数据是现代嵌入式设备通常执行的任务。这种处理通常需要大量的计算,因此需要大量的处理能力。因此,提高这类应用程序性能的硬件加速方法构成了一个重要的研究领域。在本文中,我们提出了一种这样的方法来处理流数据,即多处理器管道架构的评估。硬件基于多处理器片上系统(MPSoC),使用数据加密算法作为案例研究。该算法在粗粒度级别上进行分区,并使用专门配置的Xtensa LX3内核映射到管道中具有五个处理器内核的MPSoC上。然后通过加强和修剪每个处理器核心的资源来选择性地优化系统。对优化后的系统进行了评估,并与相同应用的最佳单处理器片上系统(SoC)进行了比较。研究人员观察到,用于数据加密算法的多处理器管道系统提供了显著的速度提升,是单处理器系统的4.45倍,接近五级管道的理想速度。
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引用次数: 1
Investigation into effect of mixed air gap eccentricity on dq components of currents in induction motor 混合气隙偏心对异步电动机电流dq分量影响的研究
Pub Date : 2011-10-10 DOI: 10.1109/ICIINFS.2011.6038079
R. Samaga, K. Vittal
dq components of currents are extensively used in the controller applications of industrial drives as they are dc quantities. In this paper, it is shown that these components will no longer remain as dc quantities, if they are extracted from the induction motor suffering from mixed air gap eccentricity. A dynamic model of an induction motor suffering from mixed air gap eccentricity is developed and simulated to show the presence of eccentricity characteristic harmonics in dq components of the stator currents in synchronous reference frame. In this paper, it is also shown that the frequency analysis of dq currents helps in the detection of air gap non uniformity in the machine. The results obtained by modeling and simulation are also validated experimentally.
电流的Dq分量在工业驱动器的控制器应用中被广泛使用,因为它们是直流量。本文表明,如果从存在混合气隙偏心的感应电动机中提取这些分量,它们将不再保持为直流量。建立了异步电动机混合气隙偏心的动力学模型,并对其进行了仿真,证明了同步参考系中定子电流dq分量中存在偏心特性谐波。本文还表明,dq电流的频率分析有助于检测机器的气隙不均匀性。模拟和仿真的结果也得到了实验验证。
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引用次数: 6
Measurement of auditory hemodynamic response function due to different temporal patterns of imaging acoustic noise using functional magnetic resonance imaging 利用功能磁共振成像技术测量不同时间模式成像声噪声引起的听觉血流动力学响应功能
Pub Date : 2011-10-10 DOI: 10.1109/ICIINFS.2011.6038073
R. Ranaweera, Minseok Kwon, Shuowen Hu, G. Tamer, T. Talavage
Imaging acoustic noise (IAN) is a confounding factor that undermines the usefulness of functional magnetic resonance imaging (fMRI), especially in auditory related experiments. This paper presents the methods and results of measuring auditory hemodynamic responses (HDR) due to different temporal patterns of IAN using fMRI. Six different temporal patterns of IAN corresponding to acoustic noise generated while using different numbers of imaging slices and effective repetition times (TR) were used as stimuli in the current study. Hemodynamic responses were measured using a stroboscopic event related paradigm with extra long TRs to minimize the effects due to previous IAN segments. The shape of the HDR and the extent of activation due to each of the above stimuli are reported here and are in agreement with those reported in previous studies. In addition to the responses due to IAN patterns reported in previous studies, responses to several new temporal patterns are also reported here. The results of this study will be used in developing a model-based correction algorithm to account for IAN in auditory fMRI.
成像声学噪声(IAN)是影响功能磁共振成像(fMRI)有效性的一个混杂因素,特别是在听觉相关实验中。本文介绍了用功能磁共振成像(fMRI)测量不同时间模式下听性血流动力学反应(HDR)的方法和结果。本研究以不同图像切片数和有效重复次数(TR)下产生的声噪声所对应的6种不同时间模式的IAN作为刺激。使用频闪事件相关范例测量血流动力学反应,并使用超长tr,以尽量减少先前IAN段造成的影响。这里报告了HDR的形状和由上述每种刺激引起的激活程度,并且与以前的研究报告一致。除了先前研究中报道的IAN模式引起的反应外,本文还报道了对几种新的时间模式的反应。本研究的结果将用于开发基于模型的校正算法,以解释听觉fMRI中的IAN。
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引用次数: 1
Ultra Wideband (UWB) antenna design for cognitive radios in the UHF TV band 超高频电视波段认知无线电的超宽带天线设计
Pub Date : 2011-10-10 DOI: 10.1109/ICIINFS.2011.6038035
K. Narampanawe, C. Divarathne, J. Wijayakulasooriya, J. Kumara
Presently, Ultra Wide Band (UWB) radio technology has attracted much interest in academics, industrial and standardization (IEEE) activities. UWB characterizes transmission systems with instantaneous spectral occupancy of higher bandwidth or higher fractional bandwidth. The antenna is probably the most overlooked part of a RF (Radio Frequency) design. The range, performance, and legality of a RF link are critically dependent upon the antenna. During this work, the UHF (Ultra High Frequency) TV Band is specifically addressed which is a target band of IEEE802.22 standardization. The UHF TV band is 336MHz wider according to CCIR (Consultative Committee on International Radio) standards. One major challenge in designing a UWB antenna for UHF band is limiting the physical size of the antenna. The paper illustrates the successful design, implementation and testing of a UWB antenna for cognitive radios in the UHF TV Band. The antenna is simple, low cost and compact enough to be used in fixed transceivers.
目前,超宽带(UWB)无线电技术已经引起了学术界、工业界和标准化(IEEE)活动的广泛关注。超宽带的特点是传输系统具有更高带宽或更高分数带宽的瞬时频谱占用。天线可能是射频(射频)设计中最容易被忽视的部分。射频链路的范围、性能和合法性在很大程度上取决于天线。在这项工作中,UHF(超高频)电视频段是IEEE802.22标准化的目标频段。根据CCIR(国际无线电咨询委员会)标准,UHF电视频带的宽度为336MHz。设计超高频波段超宽带天线的一个主要挑战是限制天线的物理尺寸。本文介绍了一种用于超高频电视频段认知无线电的超宽带天线的成功设计、实现和测试。该天线结构简单,成本低,结构紧凑,可用于固定收发器。
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引用次数: 6
A radial basis function neural network approach for multi-hour short term load-price forecasting with type of day parameter 径向基函数神经网络方法用于带日参数的多小时短期负荷价格预测
Pub Date : 2011-10-10 DOI: 10.1109/ICIINFS.2011.6038087
N. Singh, M. Tripathy, Ashutosh Kumar Singh
In 1990s, after deregulation of Australian electricity market, electricity became a commodity that can be bought and sold. This led power industry to change their planning strategies. In this planning Short Term Load Forecasting (STLF) plays a vital role to provide unit commitment, economic generation scheduling etc. In this paper, RBF neural network (RBFNN) is applied as short term load as well as price forecaster. While modeling process, day-type (Sunday, Monday, etc.) is considered as an extra input to the neural network. The prediction performance of proposed RBFNN architecture is evaluated using Mean of Mean Absolute Percentage Error (MMAPE) between actual data and forecasted data of New South Wales (Australia). The results obtained are compared with the results gained from classical moving average (MA), Holt-Winters and Feed Forward Neural Network (FFNN) methods. It is, in general, observed that the RBFNN is more accurate and works better with inclusion of day type input parameters.
20世纪90年代,澳大利亚电力市场放松管制后,电力成为一种可以买卖的商品。这导致电力行业改变了他们的规划策略。在此规划中,短期负荷预测(STLF)在提供机组承诺、经济发电计划等方面起着至关重要的作用。本文将RBF神经网络(RBFNN)应用于短期负荷预测和价格预测。在建模过程中,日类型(周日、周一等)被视为神经网络的额外输入。利用澳大利亚新南威尔士州实际数据与预测数据的平均绝对百分比误差均值(MMAPE)对所提出的RBFNN架构的预测性能进行了评估。将所得结果与经典移动平均(MA)、Holt-Winters和前馈神经网络(FFNN)方法的结果进行了比较。总的来说,观察到RBFNN更准确,并且在包含日类型输入参数时工作得更好。
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引用次数: 25
An adaptive routing algorithm for Cognitive Packet Network infrastructure based on neural networks 基于神经网络的认知分组网络自适应路由算法
Pub Date : 2011-10-10 DOI: 10.1109/ICIINFS.2011.6038041
D. K. D. Madubashitha, W. M. S. S Wijesinghe, K. A. S. R Kamaladiwela, M. G. P Ranaweera, J. Wijekoon, P. K. W Abeygunawardhana
This paper examines the possibility of introducing an intelligent routing protocol to the Internet, based on the Cognitive Packet Network (CPN) architecture with respect to the Quality of Service (QoS) delivered to the end users. In the present with increasing populations of countries it is clear that present infrastructure does not hold the sufficient capacity to deliver the expected level of service to the end users. Since there is an eminent need for a solution for improving the QoS in the Internet, this research focuses to provide a new network architecture which would improve the QoS, provide reliable and efficient service which can fulfill the ever growing Internet usage demand. This is achieved through a new network architecture known as CPN which is based on the basis of providing the best and user desired QoS. The main underlying technology behind the CPN will be a neural network. The neural network will be learning the changes in the network and adapt to the situation through the knowledge gathered. The packets will collectively learn about the network thus the load on the routers will be minimized. This mechanism completely replaces the need of a routing table thus making routing far more efficient when comparing to current routing protocols like Open Shortest Path First (OSPF). Final outcome of the research is coming to the conclusion that the future of the Internet is with the neural network based intelligent, dynamically adapting and learning CPN infrastructure instead of current packet switched network.
本文探讨了引入智能路由协议到互联网的可能性,该协议基于认知分组网络(CPN)体系结构,与交付给最终用户的服务质量(QoS)相关。目前随着各国人口的增加,显然现有的基础设施没有足够的能力向最终用户提供预期水平的服务。由于迫切需要一种改善互联网服务质量的解决方案,本研究的重点是提供一种新的网络架构,以提高服务质量,提供可靠和高效的服务,以满足日益增长的互联网使用需求。这是通过称为CPN的新网络体系结构实现的,该体系结构基于提供最佳和用户期望的QoS。CPN背后的主要底层技术将是一个神经网络。神经网络将学习网络中的变化,并通过收集到的知识来适应这种情况。数据包将共同了解网络,因此路由器上的负载将被最小化。这种机制完全取代了对路由表的需求,因此与当前的路由协议(如开放最短路径优先(OSPF))相比,路由的效率要高得多。研究的最终结论是,互联网的未来是基于神经网络的智能、动态适应和学习的CPN基础设施,而不是目前的分组交换网络。
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引用次数: 2
A novel mind map based approach for log data extraction 一种基于思维导图的测井数据提取方法
Pub Date : 2011-10-10 DOI: 10.1109/ICIINFS.2011.6038054
P. Jayathilake
Software log file analysis helps immensely in software testing and troubleshooting. The first step in automated log file analysis is extracting log data. This requires decoding the log file syntax and interpreting data semantics. The expected output of this phase is an organization of the extracted data for further processing. Log data extractors can be developed using popular programming languages targeting one or few log file formats. Rather than repeating this process for each log file format, it is desirable to have a generic scheme for interpreting elements of a log file and filling a data structure suitable for further processing. The new log data extraction scheme introduced in this paper is an attempt to provide the advanced features demanded by modern log file analysis procedures. It is a generic scheme which is capable of handling both text and binary log files with complex structures and difficult syntax. Its output is a tree filled with the information of interest for the particular case.
软件日志文件分析对软件测试和故障排除有很大帮助。自动日志文件分析的第一步是提取日志数据。这需要解码日志文件语法并解释数据语义。这一阶段的预期输出是提取的数据的组织,以供进一步处理。可以使用针对一种或几种日志文件格式的流行编程语言开发日志数据提取器。与其为每种日志文件格式重复这个过程,不如有一个通用的模式来解释日志文件的元素并填充适合进一步处理的数据结构。本文所介绍的新的日志数据提取方案是对现代日志文件分析程序所要求的高级特性的一种尝试。它是一种通用方案,能够处理结构复杂、语法困难的文本和二进制日志文件。它的输出是一个树,其中填充了特定情况下感兴趣的信息。
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引用次数: 11
Performance comparison of optical receivers using different filtering algorithms and modulation schemes 采用不同滤波算法和调制方案的光接收机性能比较
Pub Date : 2011-10-10 DOI: 10.1109/ICIINFS.2011.6038107
S. Arunprasanth, H. M. N. D. Palapathwela, U. M. Amarasekara, V. R. Herath
This paper compares the performance of optical receivers that use phase shift keying (PSK) and low pass filtering techniques. The filtering techniques that are discussed in this paper are Average filtering, Viterbi & Viterbi algorithm and Weighted Viterbi & Viterbi algorithm. Step-by-step implementation of the optical transmission system with AWGN and linear phase noise is discussed. Low pass filtering is done by obtaining the sum of most recent (2N+1) samples with suitable coefficients, where N is the Filter Width of the low pass filter. The suitability of the QPSK modulation scheme is observed by comparing QPSK modulation scheme with BPSK modulation scheme and 8-PSK modulation scheme.
本文比较了采用相移键控技术和低通滤波技术的光接收机的性能。本文讨论的滤波技术有平均滤波、Viterbi & Viterbi算法和加权Viterbi & Viterbi算法。讨论了具有AWGN和线性相位噪声的光传输系统的逐步实现。低通滤波是通过获得具有合适系数的最近(2N+1)个样本的和来完成的,其中N是低通滤波器的滤波器宽度。通过将QPSK调制方案与BPSK调制方案和8-PSK调制方案进行比较,观察QPSK调制方案的适用性。
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引用次数: 0
An autonomous robot navigation system based on optical flow 基于光流的自主机器人导航系统
Pub Date : 2011-10-10 DOI: 10.1109/ICIINFS.2011.6038119
G. Illeperuma, Upul J. Sonnadara
A simulation and a pilot scale implementation of a vision based robot navigation system was carried out to determine the feasibility and the efficiency of using optical flow based algorithms in autonomous robot navigation. For the simulation work, VRML 97 was used to create the virtual world and the robot. Simulink was used to implement the algorithm and the optical flow calculations. The video stream captured through a virtual camera as seen by the robot was used to calculate the optical flow to determine the direction and the speed of the robot for the next step. A mathematical model was used to solve the problem analytically. The same algorithm was implemented and tested in real-time in a controlled environment. Data gathered through the simulation and the actual implementation showed that it is possible to use optical flow based algorithms in robot navigation.
为了验证基于光流算法在机器人自主导航中的可行性和效率,对基于视觉的机器人导航系统进行了仿真和中试实现。在仿真工作中,使用VRML 97来创建虚拟世界和机器人。利用Simulink实现了算法和光流的计算。机器人看到的通过虚拟摄像机捕获的视频流被用来计算光流,以确定机器人下一步的方向和速度。利用数学模型对该问题进行了解析求解。同样的算法在受控环境中实现和实时测试。通过仿真和实际实现收集的数据表明,将基于光流的算法用于机器人导航是可行的。
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引用次数: 4
Simulation and fabrication of a maximum power point tracker monitoring and validating system 最大功率点跟踪监测与验证系统的仿真与制造
Pub Date : 2011-10-10 DOI: 10.1109/ICIINFS.2011.6038129
C. Liyanagedera, U. C. Dissanayake, K. T. D. D. N. Jayapala, S. Abeyratne, K. Rathnayake
Simulation of a maximum power point tracking (MPPT) algorithm prior to implementation is useful in avoiding unnecessary prototyping, fabricating and testing costs. Also upon implementation of the actual hardware system, performance monitoring and recording of the system behavior is of importance. The data manipulated above is useful in energy management and saving applications. To full fill the above requirements and to demonstrate it, a system hardware and software is designed in the research. The proposed user-software provides a gateway to real time monitoring of a prototype MPPT converter performance. Additionally, through the proposed user software, obtaining datasets to model a solar cell of interest for more accurate simulation on a given algorithm is made possible. Also it is demonstrated that the software and the prototype system together help monitoring and validating the performance of a solar panel based system.
在实现之前对最大功率点跟踪(MPPT)算法进行仿真有助于避免不必要的原型设计、制造和测试成本。在实际硬件系统的实现中,对系统行为的性能监控和记录也是非常重要的。以上操作的数据在能源管理和节能应用中很有用。为了满足上述要求并对其进行论证,本研究设计了系统的硬件和软件。所提出的用户软件提供了一个实时监控原型MPPT转换器性能的网关。此外,通过提出的用户软件,可以获得数据集来模拟感兴趣的太阳能电池,以便在给定算法上进行更精确的模拟。此外,该软件和原型系统一起帮助监测和验证基于太阳能电池板的系统的性能。
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引用次数: 0
期刊
2011 6th International Conference on Industrial and Information Systems
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