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2014 International Conference on Control, Instrumentation, Communication and Computational Technologies (ICCICCT)最新文献

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A novel approach for sequential pattern mining by using genetic algorithm 一种基于遗传算法的序列模式挖掘新方法
M. Saravanan, V. Jyothi
Web Usage Mining can be described as the discovery and analysis of user access pattern through mining of log files and associated data from a particular websites. Huge Number of visitors interact daily with web sites around the world. Huge amount of data are being produced and these in order could be very helpful to the company in the field of compliant customer's behaviors'. The world wide web contains increasing amount of websites which in turn contain increasing number of web pages. When a user visits a new website, it has to go through large number of web pages to meet their necessities. Web usage mining is the procedure of removing useful information from server logs. Hence, this work discovers sequential patterns of web files using genetic algorithm. This approach can be used to analyze the recent visitor's trend and lead to the creation of repeated and most visited pages. The purpose of using genetic algorithm is to find optimal sequential web pages.
Web使用情况挖掘可以描述为通过挖掘来自特定网站的日志文件和相关数据来发现和分析用户访问模式。每天有大量的访问者与世界各地的网站进行互动。大量的数据正在产生,这些数据在合规客户行为领域可能对公司非常有帮助。”万维网包含越来越多的网站,而这些网站又包含越来越多的网页。当一个用户访问一个新的网站,它必须通过大量的网页,以满足他们的需求。Web使用挖掘是从服务器日志中删除有用信息的过程。因此,本研究利用遗传算法发现网络文件的顺序模式。这种方法可以用来分析最近访问者的趋势,并导致创建重复和访问最多的页面。使用遗传算法的目的是寻找最优的顺序网页。
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引用次数: 4
A low phase noise CMOS voltage-controlled differential ring oscillator 一种低相位噪声CMOS压控差分环振荡器
R. Rahul, R. Thilagavathy
The paper presents a novel low phase noise voltage-controlled ring oscillator designed in UMC 0.18μm technology. The proposed design contains nine stages of differential delay cells with multiple-pass loop architecture. Linear frequency - voltage characteristics are exhibited over a wide tuning range. The tuning range of nine-stage ring oscillator is 1.1-2.3 GHz. A phase noise of -108.13dBc/Hz was estimated at an offset of 1MHz from a center frequency of 1.8 GHz. The design uses a 1.8V supply and consumes a maximum power of 65mW while operating at 1.8GHz.
提出了一种采用UMC 0.18μm工艺设计的新型低相位噪声压控环形振荡器。提出的设计包含9级差分延迟单元,具有多通环路结构。线性频率-电压特性在很宽的调谐范围内表现出来。九级环形振荡器的调谐范围为1.1-2.3 GHz。在中心频率为1.8 GHz的偏移1MHz时,估计相位噪声为-108.13dBc/Hz。该设计使用1.8V电源,工作在1.8GHz时最大功率为65mW。
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引用次数: 8
Forensic investigation framework for P2P protocol P2P协议的取证调查框架
T. Manesh, M. Sha, K. Vivekanandan
Online sharing of digital assents have now become common in the internet by its increased number of users over a decade drastically. There are many online sharing resources which offer huge storage. These facilities tend the internet users to upload and download pirated softwares, movies and other similar digital assets which violates all copyrights. The P2P protocol is working behind such online sharing websites and resources. The cyber cell is very active now in various parts of the country to trace and fraudulent sharing of files when reported. So it is necessary to have an efficient mechanism to find the actual content which is being uploaded or downloaded from a particular machine as part of network forensic investigation. Usually P2P websites and services are blocked in enterprises and educational institutions to avoid sharing of unwanted digital assets and also to increase internet bandwidth. The proposed novel technique is based on network forensics which can be used for content level observation of P2P Bit Torrent protocol and regenerate original malicious content or session between malicious users for their prosecution in the court.
在过去的十年里,随着互联网用户数量的急剧增加,在线分享数字同意书已经变得很普遍。有许多在线共享资源提供了巨大的存储空间。这些设施促使互联网用户上传和下载盗版软件、电影和其他类似的侵犯版权的数字资产。P2P协议在这些在线共享网站和资源的背后起着作用。该网络小组现在在全国各地非常活跃,追踪和欺诈性共享文件。因此,作为网络取证调查的一部分,有必要建立一种有效的机制来查找正在从特定机器上传或下载的实际内容。通常,P2P网站和服务在企业和教育机构被封锁,以避免共享不必要的数字资产,并增加互联网带宽。该技术基于网络取证技术,可对P2P Bit Torrent协议进行内容级观察,并生成恶意用户之间的原始恶意内容或会话,为其在法庭上的起诉提供依据。
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引用次数: 2
Efficient computation of configuration space transforms for collision-free motion planning 无碰撞运动规划中构型空间变换的高效计算
Rachit Sapra, Michael J. Mathew, S. Majumder
Robot motion planning in workspace suffers from issues like multiple Inverse Kinematics solutions and computationally expensive collision detection. The concept of Configuration Space was thus introduced in robotics to ease the problem of motion planning. This paper presents an approach to transform obstacles in the workspace to obstacles in the Configuration space for a 2 Degree of Freedom (DOF) R-R planar manipulator. The proposed algorithm uses a single primitive using which various convex and non-convex obstacles in the world can be transformed to their configuration space equivalent. The explicit construction of entire obstacle in configuration space is computationally expensive. Thus, only the boundaries of obstacle in configuration space have been generated by utilizing the properties of configuration space transforms. This approach can be generalized, with some modifications, to represent configuration space obstacles for robots with higher DOF. After reading this paper, the reader should be able to understand the need for configuration space in robotics, some of its essential properties and be able to construct one for planar manipulators.
机器人在工作空间中的运动规划受到多个逆运动学解和计算昂贵的碰撞检测等问题的困扰。因此,在机器人技术中引入了构型空间的概念,以缓解运动规划问题。针对2自由度R-R平面机械臂,提出了一种将工作空间中的障碍物转化为位姿空间中的障碍物的方法。该算法采用单一原语,利用该原语可以将世界上各种凸和非凸障碍物转换为它们的构形空间等效。在构形空间中显式构造整个障碍物的计算成本很高。因此,利用构型空间变换的性质,只生成了构型空间中障碍物的边界。该方法经过一些改进,可以推广到具有较高自由度的机器人构型空间障碍物的表示。在阅读本文后,读者应该能够理解机器人对位形空间的需求,它的一些基本性质,并能够构建平面机械臂的位形空间。
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引用次数: 0
Experimental evaluation of PID and ESO controller for instrument landing system 仪表着陆系统PID和ESO控制器的实验评价
Rahul Jain, P. Shetty, Satyanarayan Shenoy
This paper presents methodologies for design and experimental evaluation of both Proportional Integral and Derivative (PID) and Extended State Observer (ESO) controller for auto landing system. The process of auto landing can be experimentally described as second-order model for ESO controller. A PID controller and ESO controller is proposed to achieve the desired response for the autoland system. Computer simulations are performed to illustrate the performance of PID and ESO controller in comparison to each other. The applicability and usefulness of the proposed control scheme are well exemplified by conducting experiments on an aircraft model. Both simulations and experimental results reveal that the proposed PID and ESO scheme performs equally.
本文介绍了自动着陆系统的比例积分与导数(PID)控制器和扩展状态观测器(ESO)控制器的设计和实验评估方法。自动着陆过程可以用ESO控制器的二阶模型进行实验描述。提出了PID控制器和ESO控制器来实现自动著陆系统的期望响应。通过计算机仿真,比较了PID和ESO控制器的性能。通过对某型飞机模型的实验,验证了所提控制方案的适用性和有效性。仿真和实验结果表明,所提出的PID和ESO方案性能相当。
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引用次数: 0
OFDM baseband receiver performance analysis for various received signal impairments OFDM基带接收机的各种接收信号损伤性能分析
Rini Maria James, I. Mahalakshmi, M. Rangachar
Orthogonal Frequency Division Multiplexing (OFDM) is a digital transmission technique used both in wired and wireless communication systems to achieve higher data rates. The idea of OFDM is to split the total transmission bandwidth into a number of orthogonal subcarriers which are transmitted in parallel. In this paper the performance of OFDM baseband receiver is analyzed for various received signal impairments. The impairments considered includes phase offset, frequency offset and synchronization mismatches. Finally the quantization of these observations are carried out.
正交频分复用(OFDM)是一种用于有线和无线通信系统的数字传输技术,以实现更高的数据速率。OFDM的思想是将总传输带宽分成若干正交的子载波,这些子载波并行传输。本文分析了OFDM基带接收机在各种接收信号损伤情况下的性能。所考虑的损害包括相位偏移、频率偏移和同步不匹配。最后对这些观测结果进行量化处理。
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引用次数: 1
Implementation of non-volatile 4×4 4T1D DRAM cell in 0.18μm technology 采用0.18μm技术实现非易失性4×4 4T1D DRAM单元
T. Joseph, Ajith Ravindran
This paper deals with the design and evolution of different 4×4 bit DRAM cells. Performances of different volatile 4×4 DRAM cells are compared. The comparison is done on the basis of power, area and delay. The 4×4 Non-Volatile (NVDRAM 4T1D) cell is proposed. The performance of the NVDRAM is then examined. The schematic entry was done using Mentor Graphics Design architect and simulations are done using Mentor Graphics Eldo. The simulation results obtained with TSMC 0.18μm process technology at 1.8V.
本文讨论了不同4×4位DRAM单元的设计和发展。比较了不同挥发性4×4 DRAM电池的性能。从功率、面积和时延三个方面进行了比较。提出了4×4非易失性(NVDRAM 4T1D)单元。然后检查NVDRAM的性能。原理图入口使用Mentor Graphics Design architect完成,仿真使用Mentor Graphics Eldo完成。仿真结果采用TSMC 0.18μm工艺在1.8V下得到。
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引用次数: 1
A survey on Z-source inverter z源逆变器研究进展
N. R. Sreeprathab, X. F. Joseph
In the established Voltage source inverter (VSI) and Current source inverter (CSI), are customized to get a new technology called as Z Source inverter. This highly developed Z Source technology has a set of connections of LC with revision, and traditional pulse width modulated signal which is used with modifications. In order to interconnect the main circuit to the power source, the Z Source inverter is being employed, which holds the distinctive impedance system. So as to overcome the concept and hypothetical obstacles and boundaries present in VSI and CSI, gives a fresh power conversion model. In this paper various topologies of Z Source inverters are reviewed and discussed.
在已建立的电压源逆变器(VSI)和电流源逆变器(CSI)中,分别定制得到一种新技术称为Z源逆变器。这种高度发达的Z源技术采用了一套带修正的LC连接和带修正的传统脉宽调制信号连接。为了将主电路与电源互连,采用Z源逆变器,该逆变器具有独特的阻抗系统。为了克服VSI和CSI中存在的概念和假设障碍和边界,给出了一种全新的功率转换模型。本文对Z源逆变器的各种拓扑结构进行了综述和讨论。
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引用次数: 5
A retrospective study based on the soft computing approach in combined Ultrasonic Assisted Electrical Discharge Machining 基于软计算方法的超声辅助电火花复合加工的回顾性研究
D. Sudhakar, M. D. Anand, P. Gopu, Yang Wang, Mohammadreza Shabgard, Hamed Kakolvand, Mirsadegh Seyedzavvar
Machining of super alloys, composite materials and some high strength hard to machine materials by using Electrical Discharge Machining (EDM) produces poor quality surface finish. Ultrasonic Assisted Electrical Discharge Machining (USEDM) is one of the advanced hybrid type unconventional machining processes is developed to overcome the above quality problems. The ultimate aim of this paper is to conduct a literature survey in USEDM operations used by researchers among different applications using various materials. Also took a deep review in different prediction and optimization techniques used by researchers to obtain the optimal input parameters setting for getting an optimal solution in machining area.
用电火花加工(EDM)加工超级合金、复合材料和一些高强度难加工材料的表面光洁度较差。超声辅助电火花加工(USEDM)是为克服上述质量问题而发展起来的一种先进的混合型非常规加工工艺。本文的最终目的是对研究人员在使用各种材料的不同应用中使用的USEDM操作进行文献调查。同时对研究人员为获得加工区域的最优解而采用的各种预测和优化技术进行了深入的综述。
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引用次数: 0
A high-gain Source degenerative Cascode LNA for Wi-MAX and W-CDMA applications at 3.5GHz 一种用于3.5GHz Wi-MAX和W-CDMA应用的高增益源退化级联码LNA
Naveen Motamarri, Munshi Nurul Islam, P. Apurbaranjan, S. Deepu, S. Prasantakumar
This paper presents the design and simulation of High gain Source degenerated Cascode LNA for Wi-max and W-CDMA applications at 3.5GHz. The design uses an enhanced cascade topology to attain improved forward gain and noise figure. Th is design includes lumped elements like inductor, capacitor and resistors to design input and output matching networks. The targeted narrow-band gain, impedance matching and noise figure are achieved at the 3.5GHz. Circuit has been designed Using standard UMC 0.18μm CMOS technology and simulated in the Cadence Spectre RF tool. Targeted narrowband gain, noise figure, are 25dB and 2dB respectively. The designed circuit exhibits narrow-band gain of 27.18 dB and noise figure of 1.7 dB with Input and output return loss of -17.57 dB and -29.21 dB respectively. Circuit operates from the supply voltage of 1.8V and draws a current of 6.39mA.
本文介绍了一种适用于3.5GHz Wi-max和W-CDMA应用的高增益源退化级联码LNA的设计与仿真。该设计采用增强级联拓扑,以获得改进的正向增益和噪声系数。该设计包括电感、电容和电阻等集总元件,以设计输入和输出匹配网络。在3.5GHz下实现了目标窄带增益、阻抗匹配和噪声系数。电路采用标准的UMC 0.18μm CMOS技术设计,并在Cadence Spectre射频工具中进行了仿真。目标窄带增益和噪声系数分别为25dB和2dB。设计的电路窄带增益为27.18 dB,噪声系数为1.7 dB,输入和输出回波损耗分别为-17.57 dB和-29.21 dB。电路工作在1.8V的电源电压和6.39mA的电流。
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引用次数: 2
期刊
2014 International Conference on Control, Instrumentation, Communication and Computational Technologies (ICCICCT)
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