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2017 International Conference on Computer, Electrical & Communication Engineering (ICCECE)最新文献

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Randomized LSB Based Video Steganography for Hiding Acoustic Data Using XOR Technique 基于随机LSB的音频隐写技术
Namrata Singh, Jayati Bhardwaj
Preventing the secret data from malicious attackers or intruders is a part of a wide range field known as steganography. Adding a pinch to this wide area of research with a new variety could be of great deal to get rid of the attackers. This paper presents a video steganography technique for hiding audio data sequences into the random frames of the cover video. The embedding is done by using the LSB embedding technique. Before inculcating the new LSB bits of audio, XORing among the audio bits and the original LSB bits is done. This XORing avoids distortion in the cover video as well as prevents data loss after extraction.
防止秘密数据被恶意攻击者或入侵者窃取是一个广泛领域的一部分,称为隐写术。在这个广泛的研究领域增加一个新的品种可能对摆脱攻击者有很大的帮助。本文提出了一种视频隐写技术,将音频数据序列隐藏到封面视频的随机帧中。该嵌入采用LSB嵌入技术。在注入音频的新LSB位之前,在音频位和原始LSB位之间进行XORing。这种XORing避免了封面视频的失真,也防止了提取后的数据丢失。
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引用次数: 2
Performance Evaluation of a Reduced Order Kalman Filter for Running Train Localization Problem 运行列车定位问题的降阶卡尔曼滤波性能评价
S. Banerjee, S. Chattaraj
A Kalman Filter based solution to running train localization problem from station to station (in short distance) has been explored. Signal system based solution aided with track side installed hardware is a classical approach, however, involves high operational cost due to installation, maintenance and protection against vandalism. Recent development is sought based on the principles of intelligent distributed control system, which operates on data supplied by both on board navigation sensors and satellite navigation system. Such a system is prone to failure due to transient nature of satellite data in adverse situations. Kalman filter based estimator constructed with only on-board sensor data has been proven to be at par. However, such a full order filter involves many states in its dynamics, which incurs high computational cost. Present work discusses the design and implementation of a reduced order Kalman filter based on on-board sensor data, to solve running train localization problem. Simulation results are presented in order to establish the effectiveness of the proposed filter.
研究了一种基于卡尔曼滤波的运行列车站间(短距离)定位问题的求解方法。基于信号系统的解决方案,辅助轨道侧安装硬件是一种经典的方法,然而,由于安装,维护和防止破坏,涉及高运营成本。基于星载导航传感器和卫星导航系统提供数据的智能集散控制系统的原理,寻求新的发展方向。由于卫星数据的瞬态特性,这种系统在不利的情况下容易发生故障。基于卡尔曼滤波的估计器仅由机载传感器数据构建,已被证明是等价的。然而,这种全阶滤波器涉及到许多动态状态,计算成本很高。本文讨论了基于车载传感器数据的降阶卡尔曼滤波器的设计与实现,以解决运行列车的定位问题。仿真结果验证了所提滤波器的有效性。
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引用次数: 0
SiC MOSFET Based VSC Used in HVDC Transmission with DC Fault Protection Scheme 基于SiC MOSFET的VSC在直流输电中的应用及直流故障保护方案
Roshan Ghosh, Saikat Mondal, Sudip Kumar Ghorui
Development in Silicon Carbide (SiC) semiconductor technology is gaining immense importance compared to the conventional silicon based semiconductor devices. Application areas where excellent level of efficiency, fast switching frequencies, very minimum switching losses and impressive performance under elevated temperatures is expected SiC provides the best results. Thus it plays a prominent role in future electrical grid technology. This paper analyses the performance of a SiC based voltage source converter (VSC) operating in HVDC transmission system under the DC fault condition. Simulations conducted on MATLAB/Simulink shows that proposed SiC based VSC-HVDC protection scheme reduces the DC short circuit fault current very quickly compared to the Si based VSC. Performance of three phase harmonic filters to eliminate the converter generated harmonics is also examined.
与传统的硅基半导体器件相比,碳化硅半导体技术的发展正变得越来越重要。优异的效率水平、快速的开关频率、极低的开关损耗和在高温下令人印象深刻的性能的应用领域,期望SiC提供最好的结果。因此,它在未来的电网技术中具有突出的作用。分析了一种基于SiC的电压源变换器(VSC)在直流故障条件下在高压直流输电系统中的性能。在MATLAB/Simulink上进行的仿真表明,与基于Si的VSC相比,基于SiC的VSC- hvdc保护方案可以快速降低直流短路故障电流。本文还研究了三相谐波滤波器消除变换器产生的谐波的性能。
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引用次数: 0
Optimal Placement of DG Units in Distribution Network Using APCSA and OBOSA for Power Loss and Execution Time Minimization 基于APCSA和OBOSA的电力损耗和执行时间最小化配电网DG机组优化配置
Arnab Pal, A. Chakraborty, A. Bhowmik, Bhaskar Bhattacharya
The necessity for flexible electric systems, changing regulatory & economic scenarios, energy savings & environmental impact are providing impetus to the development of distributed generation (DG), which is predicted to play an increasing role in the electric power system of the near future. Allocation of DG units at non optimum places can result low or over voltages in the network. On the other hand, the installation of DG can have positive impacts on the distribution system by enabling reactive power compensation for a voltage control, reducing the losses, contributing for frequency regulation and acting as spinning reserve in the main system. For that reason, the use of a methodology capable of analyzing the influence on some system characteristics of DG allocation can be very useful for the system planning engineer when dealing with the increase of DG penetration that is happening nowadays. This paper presents two newly developed backward forward sweep load flow based algorithms to determine the optimal location to place a DG unit in IEEE 33 and IEEE 69 test bus distribution systems to improve the voltage profile of the entire system as well as power loss minimization. The proposed methods are found to be very effective for power loss minimization with fast convergence.
灵活电力系统的必要性、不断变化的监管和经济情景、节能和环境影响正在推动分布式发电(DG)的发展,预计在不久的将来,分布式发电将在电力系统中发挥越来越大的作用。将DG机组配置在非最佳位置会导致电网电压偏低或过电压。另一方面,DG的安装可以对配电系统产生积极的影响,通过无功补偿电压控制,减少损耗,有助于频率调节,并在主系统中充当旋转备用。因此,使用一种能够分析DG分配对某些系统特性的影响的方法,对于系统规划工程师在处理目前正在发生的DG渗透增加时非常有用。本文提出了两种新开发的基于后向扫描潮流的算法,用于确定在IEEE 33和IEEE 69测试母线配电系统中DG机组的最佳位置,以改善整个系统的电压分布并使损耗最小化。结果表明,所提出的方法具有较快的收敛速度和较好的功率损耗最小化效果。
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引用次数: 0
Comparative Study of Single and Multiple Point Renewable Energy Based DG Allocation Considering Improvement of Voltage Stability, Economic and Environmental Factors Using Jaya Algorithm 考虑提高电压稳定性、经济和环境因素的Jaya算法单点和多点可再生能源DG分配的比较研究
Anirban Chowdhury, Raniit Roy, K. Mandal
An improved, fast and simple optimization algorithm, Jaya, is applied on a multi-objective, constrained problem to find the optimal allocation of a single and two distributed generators (DG), taking care of security limits. During sizing and optimal allocation of the DG/DGs, technical, social and economic conditions have been taken into account. The objective function is based on indices namely, voltage profile enhancement index (VPEI), emission cost benefit index (ECBI) and benefit cost ratio (BCR), so as to analyze the effect of the DG/DGs on IEEE 33 and IEEE 69 bus systems. This manuscript presents a comparative study of single DG and twin DG allocation of same capacity in total as well as the performance of Jaya in calculating the optimal size of DG considering the technical, social and economic impacts.
将一种改进的、快速的、简单的优化算法Jaya应用于多目标约束问题,在考虑安全限制的情况下,找到单个和两个分布式发电机(DG)的最优分配。在DG/DG的分级和优化配置过程中,考虑了技术、社会和经济条件。目标函数以电压剖面增强指数(VPEI)、排放成本效益指数(ECBI)和效益成本比(BCR)为指标,分析DG/DG对IEEE 33和IEEE 69母线系统的影响。本文提出了一个比较研究的单DG和双DG分配相同的总容量,以及Jaya在计算DG的最佳规模考虑到技术,社会和经济影响的性能。
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引用次数: 1
Performance Improvement of Tea Industry with Multi Objective Particle Swarm Optimisation 基于多目标粒子群优化的茶叶产业绩效提升
D. Roy, R. Dasgupta
In this Paper the Multi-Objective Particle Swarm Optimisation has been used to demonstrate ways to improve the efficiency of Tea Industry after implementation in MAT-LAB. The data for Terai Tea Estate has been extracted from the Financial Statements obtained from Tea Board. The ratio functions have been identified, whose maximisation will improve the performance of the organisation. The regression analysis has been performed to estimate the coefficients of two ratio functions. The Pareto Front has been derived for this dual objective function using Multi-Objective Particle Swarm Optimisation. The results have been presented in this paper.
本文运用多目标粒子群优化方法,在MAT-LAB中实现了对茶叶行业效率的提高。寺井茶业的数据是从茶叶委员会获得的财务报表中提取的。比率函数已经确定,其最大化将提高组织的绩效。对两个比值函数的系数进行了回归分析。利用多目标粒子群算法,推导了该双目标函数的Pareto Front。本文给出了实验结果。
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引用次数: 0
An Automated System for Image Reconstruction from Distorted Image Fragments 一种基于畸变图像碎片的自动图像重建系统
M. Tewari, Susovan Jana, R. Parekh
Image reconstruction from image fragments has lots of application areas like forensics, art restoration, reconstructive surgery, archeology, puzzle gaming, and civil construction. Reconstruction becomes more challenging when number of fragments increases, image size increases, fragments are similar in shape and color, or fragments are transformed and shuffled. To execute image reconstruction in an effective and efficient manner, an automated computer-based system has been proposed in this paper using image processing techniques. A median filter is first applied to remove noise, after which Speeded Up Robust Features (SURF) are used to orient the fragments properly by reversing any arbitrary transformation applied. Finally, the candidate fragment for each position is chosen using an intelligent fragment selection technique. The proposed method achieves a very good accuracy of 97.78% to 100% and takes minimal time for reconstruction as compared to manual reconstruction.
基于图像碎片的图像重建在法医、艺术修复、重建外科、考古、益智游戏和土木建筑等领域有着广泛的应用。当碎片数量增加、图像大小增加、碎片形状和颜色相似或碎片被变换和洗牌时,重构变得更加困难。为了有效和高效地执行图像重建,本文提出了一种基于计算机的自动图像处理系统。首先应用中值滤波器去除噪声,然后使用加速鲁棒特征(SURF)通过反转应用的任意变换来正确定位碎片。最后,使用智能片段选择技术选择每个位置的候选片段。与人工重建相比,该方法的重建时间最短,重建准确率达到97.78% ~ 100%。
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引用次数: 1
Hybrid System: A Smart Choice for Real Time Application 混合系统:实时应用的明智选择
Saikat Mondal, Sudip Kumar Ghorui, Roshan Ghosh
Fuzzy logic based control system provides a simple and efficient method to control highly complex and imprecise situation. However, the lack of simple hardware designs that is the capable of implementing fuzzy controller's parameters in a single chip, sometimes limits the capability of fuzzy based system in an automotive and industrial environment. In present days, a reconfigurable hardware platform like field programmable gate array (FPGA) has become an alluring alternative to synthesis and implements the desired system with an appropriate design for automation tool. This paper aims to address different hardware implementation issues of fuzzy system on a real-time environment (FPGA) and also proposes the hardware friendly neuro-fuzzy technique as a better replacement of a fuzzy system. In this paper, a simple rule base has been realized on the Xilinx SPARTAN 3AN FPGA development board to bolster the feasibility and superiority of the neuro-fuzzy over the fuzzy system. For the purpose of hardware implementation, optimum choice in terms of speed, accuracy and resource utilization is obtained in case of neuro-fuzzy technique and the results are in conformation.
基于模糊逻辑的控制系统为控制高度复杂和不精确的情况提供了一种简单有效的方法。然而,由于缺乏能够在单个芯片上实现模糊控制器参数的简单硬件设计,有时会限制基于模糊的系统在汽车和工业环境中的能力。目前,像现场可编程门阵列(FPGA)这样的可重构硬件平台已经成为一种诱人的替代方案,并通过适当的自动化工具设计来实现所需的系统。本文旨在解决模糊系统在实时环境(FPGA)上的各种硬件实现问题,并提出硬件友好的神经模糊技术作为模糊系统的更好替代品。本文在Xilinx SPARTAN 3AN FPGA开发板上实现了一个简单的规则库,以增强神经模糊系统相对于模糊系统的可行性和优越性。从硬件实现的角度出发,对神经模糊技术在速度、精度和资源利用率方面进行了优化选择,结果一致。
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引用次数: 0
Design, Implementation and Performance Comparison of Different Branch Predictors on Pipelined-CPU 流水线cpu上不同分支预测器的设计、实现及性能比较
Syed Ali Imran Quadri, Mohd Ziauddin Jahangir
Branch predictors are implemented on pipelined CPUs having different types of instructions. Both unconditional and conditional branches are implemented utilizing different instruction set formats of the CPU. A basic pipelined CPU consists of three stages Fetch, Decode, and Execute. All the instructions are executed in parallel, hence every stage is busy with an instruction which saves the wastage of time and increases the performance. Hazards will occur because of Conditional branches in the pipeline which changes the sequential flow of execution. To overcome these hazards, the pipeline should be made empty and loaded with appropriate instruction which avoids the wastage of time. Hence Branch predictors are essential in CPUs as it saves the wastage of time by guessing the correct sequence of instruction as the conditional branches changes the sequence of instructions. Three types of Branch Predictors are implemented on pipelined CPUs separately which are simulated, synthesized and bit-files are generated using Xilinx ISE tool, the bit-files are later dumped on Xilinx SPARTAN-6 board and the results are analyzed using CHIPSCOPE.
分支预测器在具有不同类型指令的流水线cpu上实现。无条件分支和条件分支都是利用CPU的不同指令集格式来实现的。一个基本的流水线CPU由三个阶段组成:读取、解码和执行。所有的指令都是并行执行的,因此每个阶段都忙于一条指令,从而节省了时间的浪费并提高了性能。由于管道中的条件分支改变了执行的顺序流,因此会发生危险。为了克服这些危险,管道应该清空并装载适当的指令,以避免浪费时间。因此,分支预测器在cpu中是必不可少的,因为当条件分支改变指令序列时,它通过猜测正确的指令序列来节省时间浪费。三种分支预测器分别在流水线cpu上实现,采用Xilinx ISE工具进行模拟、合成并生成位文件,将位文件转储到Xilinx SPARTAN-6板上,并使用CHIPSCOPE对结果进行分析。
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引用次数: 0
Mutual Coupling Minimization of MIMO Antenna for Satellite Services and Radio Service Applications 卫星业务和无线电业务应用中MIMO天线互耦最小化
Mehr-e-Munir, S. Kiani, Daniyal Babar, S. Khan
Ground irregularities also known as Defected ground structures (DGS) is a freshly presented innovatory way in designing of patch antennas to boost up the performance of antenna constraints. This study presents a novel proposal of ground irregularities or defected ground structure is proposed for suppression of mutual coupling effects among 2xl multiple input multiple output patch array designed on Roggers Duroid 5880. The two adjacent M shape structures surrounding Dumbbell Shaped structure and sandwiched between Dumbbell shape patterns showed the significant level of surface wave suppression up to −46dB while maintaining the gain of 4.7dB and 5.6dBi of directivity. The patch array operates at 4 to 4.3GHz for Fixed and Radio satellite services (FSS) and (RSS) and radio altimeter application systems.
地面不规则性也被称为缺陷地面结构(DGS),是一种用于提高天线约束性能的贴片天线设计的新方法。本研究提出了一种新的接地不规则或缺陷接地结构的方案,用于抑制在Roggers Duroid 5880上设计的2xl多输入多输出贴片阵列之间的相互耦合效应。两个相邻的M形结构围绕哑铃形结构并夹在哑铃形结构之间,在保持4.7dB和5.6dBi的指向性增益的同时,表面波抑制水平达到- 46dB。贴片阵列工作在4至4.3GHz频率,用于固定和无线电卫星服务(FSS)和(RSS)以及无线电高度计应用系统。
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引用次数: 0
期刊
2017 International Conference on Computer, Electrical & Communication Engineering (ICCECE)
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