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2014 IEEE International Conference on Computational Intelligence and Computing Research最新文献

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A study of four stage encryption: Experimental results 四阶段加密的研究:实验结果
S. V. Appaji, G. Acharyulu
The Four Stage Encryption System introduced by Acharyulu and Appaji provides secrecy even when the attacker has some samples of plain texts and their corresponding cipher texts obtained with the same key, because the cipher text generated each time, for the same plain text with the same key, is different. In other words, the system is secure against adaptive chosen-plain text attack. Another interesting feature is that even the size of the cipher text, for given plain text under a given key, is unpredictable. In this paper the use of the system and sensible evidence to the strength of the system are demonstrated by executing it sufficiently large number of times for different choices of plain texts and keys.
Acharyulu和Appaji介绍的四阶段加密系统即使攻击者有一些使用相同密钥获得的明文样本及其对应的密文,也能提供保密性,因为对于相同密钥的同一明文,每次生成的密文是不同的。换句话说,系统对自适应选择纯文本攻击是安全的。另一个有趣的特性是,对于给定密钥下的给定纯文本,即使是密文的大小也是不可预测的。在本文中,通过对不同的纯文本和密钥选择执行足够多的次数来证明系统的使用和对系统强度的合理证据。
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引用次数: 1
Application of solid state fault current limiter on express feeder for voltage sag mitigation 固态故障限流器在快速馈线上的应用
J. P. Sharma, Vibhor Chauhan
Voltage sags during short-circuit faults are one of the major power quality problems and voltage sag mitigation at point of common coupling (PCC) is proposed using solid state fault current limiter (SSFCL). The proposed SSFCL is tested on a practical express distribution feeder, Bajaj hospital in a MATLAB/SIMULINK environment. Proposed SSFCL mitigate voltage sag at PCC for various unsymmetrical/symmetrical faults such single phase-to-ground, phase-to-phase, three phase and two-phase-to ground faults. In present scenario increased demand of electricity has raised short circuit level of power system. Proposed SSFCL also limit fault current significantly and thus reduced short circuit level and electromagnetic stress in associated equipment's. The performance of proposed SSFCL is evaluated in the forms of voltage sag mitigation and suppression of fault current for unsymmetrical/symmetrical faults and it is shown that, SSFCL has tremendous competence of suppressing the fault current and voltage mitigation quasi instantaneously that leads more reliable and stable condition of system.
短路故障时电压骤降是主要的电能质量问题之一,提出了采用固态故障限流器(SSFCL)来缓解共耦合点电压骤降的方法。在MATLAB/SIMULINK环境下,对所提出的SSFCL在Bajaj医院快递配送馈线上进行了测试。提出的SSFCL可减轻PCC在单相对地、相对地、三相和两相对地等各种不对称/对称故障下的电压凹陷。在目前的情况下,电力需求的增加提高了电力系统的短路水平。所提出的SSFCL还显著地限制了故障电流,从而降低了相关设备的短路水平和电磁应力。通过对非对称/对称故障的电压暂降抑制和故障电流抑制两种形式的性能评价,表明该方法具有较强的准瞬时抑制故障电流和电压抑制能力,使系统状态更加可靠和稳定。
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引用次数: 6
Successive stage multi-round scheduling for cube based multi-processor systems 基于多维数据集的多处理机系统的连续阶段多轮调度
Moin Hasan, Major Singh Goraya
Multi-processor systems are advantageous in the sense that they allow concurrent execution of the given workload. The workload can be thought as the computation units which can be either processes or tasks. These processes or tasks can either be independent programs or partitioned modules of a single program. This paper presents an algorithm named as “Successive Stage Multi Round Scheduling” which is able to allocate and balance the given workload among the connected processing units of the Multi-processor system in order to improve the efficiency of the system. Simulation results are obtained using the hypercube architecture due to its simple design and high interconnectivity and results are compared with two existing schemes namely “Minimum Distance Scheduling” and “Two Round Scheduling".
多处理器系统的优势在于它们允许并发执行给定的工作负载。工作负载可以看作是计算单元,可以是进程,也可以是任务。这些进程或任务可以是独立的程序,也可以是单个程序的分区模块。本文提出了一种“连续阶段多轮调度”算法,该算法能够在多处理器系统的连接处理单元之间分配和平衡给定的工作负载,以提高系统的效率。采用设计简单、互联性高的超立方体架构进行了仿真,并与现有的“最小距离调度”和“两轮调度”方案进行了比较。
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引用次数: 3
Rotation direction control by finger movement 通过手指移动控制旋转方向
M. Beri
Control of direction of motor rotation is achieved via real-time image acquisition and processing. The model is prepared using Matlab and Simulink platforms and input is taken via any camera attached to the system. Commands are executed to rotate the rotor in either direction depending upon the movement of any object in front of the camera, be it a pencil, a pen, a human finger, a human eyeball or any body part for that matter. No costly system is required besides a webcam for image capturing and a dc motor. This novel controlling system befits all and highly reduces human effort. Besides bringing rapidity in execution of systems, it is a boon for the motor disabled.
通过实时图像采集和处理,实现对电机旋转方向的控制。该模型是使用Matlab和Simulink平台编制的,并通过连接在系统上的任何摄像机进行输入。命令被执行旋转转子在任何方向取决于任何物体在相机前的运动,无论是铅笔,钢笔,人的手指,人的眼球或任何身体部位的问题。除了用于图像捕获的网络摄像头和直流电机外,不需要昂贵的系统。这种新颖的控制系统适用于所有人,大大减少了人力。除了提高系统的执行速度外,这对运动残疾人士来说也是一个福音。
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引用次数: 0
A recursive crawler algorithm to detect crash in Android application 一种用于检测Android应用程序崩溃的递归爬虫算法
R. Anbunathan, A. Basu
Android mobile testing is challenging as it involves several applications to be tested. Automated testing involves lot of script writing or instrumentation of source code. In this paper, designing a crawler algorithm without any source code instrumentation (Block box approach) is discussed. In this approach, UI Automator is the tool used to learn User Interface (UI) objects of each screen recursively. The properties of these objects are stored in a database for navigating through menu tree to detect application crash. The effectiveness of this method is studied and compared with other methods.
Android手机测试是具有挑战性的,因为它涉及多个应用程序进行测试。自动化测试涉及大量的脚本编写或源代码的检测。本文讨论了一种不需要任何源代码插装(Block box approach)的爬虫算法的设计。在这种方法中,UI自动化器是用来递归地学习每个屏幕的用户界面(UI)对象的工具。这些对象的属性存储在数据库中,以便在菜单树中导航以检测应用程序崩溃。研究了该方法的有效性,并与其他方法进行了比较。
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引用次数: 5
Improved consistency model in cloud computing databases 改进了云计算数据库的一致性模型
B. Jeevarani, Asst K Chitra, Professor
Nowadays cloud computing is the fastest growing technology that is used as a source of providing service through Internet. It is an enhanced model of Utility Computing. It embodies all technologies in Computer Architecture. It delivers the clients the needed applications, processes and Information as a service. It provides software platform as a service and virtualized servers, storage area and networks as a service. In addition to that it also manages and delivers database services. The traditional time consuming way of database management degrades the system performance. At present a weak form of consistency is maintained in cloud computing environment. This paper introduces an improved consistency model for cloud computing platform using prioritized read-write mechanism.
如今,云计算是发展最快的技术,它被用作通过互联网提供服务的来源。它是效用计算的增强模型。它体现了计算机体系结构中的所有技术。它以服务的形式向客户机交付所需的应用程序、流程和信息。它提供软件平台即服务和虚拟化服务器、存储区域和网络即服务。除此之外,它还管理和交付数据库服务。传统的数据库管理方式比较耗时,降低了系统的性能。目前在云计算环境中,一致性维持的形式比较弱。介绍了一种基于优先读写机制的改进的云计算平台一致性模型。
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引用次数: 3
An automated detection and segmentation of tumor in brain MRI using artificial intelligence 基于人工智能的脑MRI肿瘤自动检测与分割
M. Bhanumurthy, Koteswararao Anne
Medical image segmentation is a crucial process which makes possible, the characterization and visualization of the structure of interest in medical images. Brain MRI segmentation is a more difficult procedure because of inconsistency of abnormal tissues like tumor. In this paper, we propose a fully automated technique that uses artificial intelligence to detect and segment abnormal tissues like tumor and atrophy in brain MRI images accurately. Three stages are offered in our work: (1) Feature Extraction (2) Classification and (3) Segmentation. The extracted features like energy, entropy, homogeneity, contrast and correlation from the brain MRI images are applied as input to an artificial intelligence system that uses a Neuro-fuzzy classifier which classifies the images into normal or abnormal. The abnormal tissues like tumor and atrophy are then segmented using region growing method. The accuracy of the segmentation results are assessed with metrics like False Positive Ratio (FPR), False Negative Ratio (FNR), Specificity, Sensitivity and Accuracy. This entire procedure is developed as a Graphical User Interface (GUI) system which results in automated detection and segmentation of tumor.
医学图像分割是实现医学图像中感兴趣结构的表征和可视化的关键过程。由于肿瘤等异常组织的不一致性,脑MRI分割是一个比较困难的过程。在本文中,我们提出了一种全自动技术,利用人工智能来准确地检测和分割脑MRI图像中的肿瘤和萎缩等异常组织。我们的工作分为三个阶段:(1)特征提取(2)分类(3)分割。从大脑MRI图像中提取的能量、熵、同质性、对比度和相关性等特征作为输入应用于人工智能系统,该系统使用神经模糊分类器将图像分为正常或异常。然后用区域生长法对肿瘤、萎缩等异常组织进行分割。分割结果的准确性通过假阳性比(FPR)、假阴性比(FNR)、特异性、敏感性和准确性等指标进行评估。整个过程是作为图形用户界面(GUI)系统开发的,可实现肿瘤的自动检测和分割。
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引用次数: 21
Low complexity hardware implementation of quantization and CAVLC for H.264 encoder H.264编码器量化和CAVLC的低复杂度硬件实现
A. Joshi, V. Mishra, R. Patrikar
H.264 is the advance video coding standard for the compression and distribution of a video content. It has larger complexity in order to satisfy the demand of high quality video at low bit rate. Moreover, it requires the effective implementation of all its internal blocks. In the paper, we focuses on the implementation of two important blocks for H.264 encoder. We propose low complexity design of quantization and Context Adaptive Variable Length Coding (CAVLC). The quantization process is responsible for scaling down the value of transform coefficients. CAVLC is useful for a bit stream generation and it is adopted from the concept of modified Variable Length Coding (VLC) technique. The efficient architectures are designed for quantization and CAVLC blocks to have parallel and pipeline data processing. They are implemented on Virtex 4 XC4VLX40 FPGA family using VHDL. The synthesized results are obtained with Xilinx ISE 14.2 and resource, device utilization and timing analysis are reported. The results are compared with related work that shows the better real time performance of both blocks.
H.264是用于压缩和分发视频内容的先进视频编码标准。为了满足低比特率下高质量视频的需求,它具有较大的复杂度。此外,它需要有效地实现其所有内部块。本文重点介绍了H.264编码器中两个重要模块的实现。我们提出了低复杂度的量化设计和上下文自适应变长编码(CAVLC)。量化过程负责缩小变换系数的值。CAVLC是由修改变长编码(VLC)技术的概念发展而来的,用于比特流的生成。为量化和CAVLC块设计了高效的体系结构,以实现并行和流水线数据处理。它们是在Virtex 4 XC4VLX40 FPGA系列上使用VHDL实现的。在Xilinx ISE 14.2中获得了综合结果,并报道了资源、器件利用率和时序分析。结果与相关工作进行了比较,表明两种模块的实时性能都更好。
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引用次数: 2
Comparative analysis of digital image stabilization by using empirical mode decomposition methods 经验模态分解方法在数字稳像中的应用对比分析
Neha Kottawar, D. J. Tuptewar
In this paper comparative analysis of digital image stabilization (DIS) is proposed. For comparison purpose Basic Empirical Mode Decomposition (EMD), Improved EMD, Ensemble Empirical Mode Decomposition (EEMD) and Complete Ensemble Empirical Mode Decomposition (CEEMD) methods are considered. Method used for digital image stabilization is of fully data driven approach. With the comparative analysis best version of the EMD for DIS on the basis of low RMSE error is decided. The concept used to determine jitter is high frequency and low amplitude property. Combination of each EMD method and Hilbert Transform is used for the analysis. Various methods of EMD give the different results the better method for digital image stabilization is decided and parameters of EEMD and CEEMD method are globalised.
本文对数字稳像(DIS)技术进行了比较分析。为了比较基本经验模态分解(EMD)、改进经验模态分解(EMD)、集成经验模态分解(EEMD)和完全集成经验模态分解(CEEMD)方法。采用全数据驱动的数字稳像方法。通过比较分析,确定了在低均方根误差基础上的DIS最佳EMD版本。用来确定抖动的概念是高频低幅特性。将各种EMD方法与希尔伯特变换相结合进行分析。不同的EMD方法得到了不同的结果,确定了较好的数字稳像方法,并对EEMD和CEEMD方法的参数进行了全局化。
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引用次数: 3
Matrix converter based solar photo voltaic system for reactive power compensation using sinusoidal pulse width modulation 基于矩阵变换器的太阳能光伏系统无功补偿采用正弦脉宽调制
K. Raja, K. Vijayakumar, S. Kannan
Reactive power is a subject of great concern for the operation of Alternating Current (AC) power systems. It has always been a challenge to obtain the balance between a minimum amount of reactive power flow to maximize capacity for active power flow and a sufficient amount of reactive power flow to maintain a proper system voltage profile. This work mainly deals with the compensation of reactive power by using Solar Photovoltaic Power System. Single-phase matrix converter is used for developing AC voltage. Single-phase matrix converter can be used as a Rectifier and as an Inverter. The same system could be used for real power exchange utilizing free energy (Solar) thus minimizing the utility power supply. Bidirectional energy flow is possible with matrix converter for battery charging. Use of matrix converter improves the quality of output voltage with reduced Total Harmonic Distortion. Sinusoidal Pulse Width Modulation (SPWM) is used for generating pulses to the matrix converter. Digital control of proposed real and reactive power compensation improves the overall efficiency of the system and reliability.
无功功率是影响交流电力系统运行的一个重要问题。如何在使有功功率容量最大化的最小无功功率流和维持适当系统电压分布的足够无功功率流之间取得平衡一直是一个挑战。本文主要研究利用太阳能光伏发电系统对无功功率进行补偿。交流电压的产生采用单相矩阵变换器。单相矩阵变换器既可用作整流器,也可用作逆变器。同样的系统可以用于利用自由能源(太阳能)的实际电力交换,从而最大限度地减少公用事业电力供应。利用矩阵变换器可以实现电池充电时的双向能量流动。矩阵变换器的使用降低了总谐波失真,提高了输出电压的质量。正弦脉宽调制(SPWM)用于向矩阵变换器产生脉冲。所提出的有功和无功补偿的数字控制提高了系统的整体效率和可靠性。
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引用次数: 0
期刊
2014 IEEE International Conference on Computational Intelligence and Computing Research
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