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Detection of Malicious Circuit in Hardware using Compressive Sensing Algorithm 基于压缩感知算法的硬件恶意电路检测
M. Priyatharishini, M. Nirmala Devi
It has been observed very critically in the hardware that robust Trojans are inserted in outsourced products resulting in security vulnerabilities. It is more important to note that some areas are in need to be more reliable and trust worthy with respect to security. A perpetrator in any possible location could alter the circuit behavior by including an unintended module in the circuit which can be very hard or impossible to detect until triggered. In this paper, a self-referencing approach is proposed that measures the leakage power of the circuit at different time windows. This approach can efficiently and reliably detect the leakage power that the Trojan creates and also avoids the requirement of golden chip by mapping a chip’s leakage power at different time window. The proposed method is also formulated using compressive sensing algorithm for selecting Trojan revealing test vectors and compresses the chip output. The proposed method is validated on ISCAS’85 benchmark circuits, in which 82% reduction in the output dimensions for the leakage power measurement is achieved for a compression ratio of 0.75.
在硬件中已经观察到,在外包产品中插入健壮的木马程序会导致安全漏洞。更重要的是要注意到,一些领域在安全方面需要更加可靠和值得信任。犯罪者在任何可能的位置都可以通过在电路中包含意想不到的模块来改变电路行为,这些模块在触发之前很难或不可能检测到。本文提出了一种测量电路在不同时间窗漏功率的自参考方法。该方法通过映射芯片在不同时间窗的泄漏功率,可以有效、可靠地检测出木马产生的泄漏功率,避免了对黄金芯片的要求。该方法还采用压缩感知算法来选择木马暴露测试向量并压缩芯片输出。该方法在ISCAS’85基准电路上进行了验证,在压缩比为0.75的情况下,泄漏功率测量的输出尺寸减小了82%。
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引用次数: 2
Critical Review of Control Strategies for Switched Reluctance Motor Employed in Electric Vehicle 电动汽车用开关磁阻电机控制策略综述
Kavita B. Hunasikatti, R. L. Naik, Veena D Nayak
This paper presents a critical review of control strategies for switched reluctance motor employed in electric vehicle. The survey is carried out on various control strategies namely average torque control, instantaneous torque, torque sharing and direct instantaneous torque control. The purpose of the survey is to identify the capability of control strategies in terms of speed and torque of SRM for electric vehicle application. The preliminary observation from the study is that, SRM have high torque ripples and it is severe during commutation between the adjacent phases. Further, it also leads to high acoustic noise, vibration and harshness of the electric vehicle system. In view of this, there is need to develop an appropriate control method to overcome the said problems of SRM drive employed in EVs.
本文对电动汽车用开关磁阻电机的控制策略进行了综述。对平均转矩控制、瞬时转矩控制、转矩共享控制和直接瞬时转矩控制等控制策略进行了研究。调查的目的是确定控制策略的能力方面的SRM的速度和扭矩为电动汽车的应用。研究的初步观察结果表明,SRM存在较大的转矩波动,且在相邻相位之间的换相过程中转矩波动较为严重。此外,它还导致电动汽车系统的高噪声,振动和粗糙。鉴于此,需要开发一种合适的控制方法来克服电动汽车SRM驱动存在的上述问题。
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引用次数: 1
Enhanced Framework for Sentiment Analysis in Text using Distance based Classification Scheme 基于距离分类方案的文本情感分析改进框架
S. Angadi, R. Venkata Siva Reddy
Social media platform like blogs, social networks and content communities have become valuable resource for mining the sentiments. In fact information gained from the social platform like Facebook and twitter has been expressed to be more important to industries, market, news, public opinion organization and many more. Sentiment analysis in a text is a procedure in which the polarities like positive and negative of a specified text is determined. In this project we are using twitter comments as the text input. The proposed method consists of two phases called testing and training phase. For extracting the features we are using the sentiwordnet. The distance based classifier is used to classify the features. Finally analyses of the sentiments are done by polarities classified by the distance classifier.
博客、社交网络和内容社区等社交媒体平台已成为挖掘情感的宝贵资源。事实上,从Facebook和twitter等社交平台获得的信息已经被表达为对行业、市场、新闻、舆论组织等更重要。语篇情感分析是确定特定语篇的正负极性的过程。在这个项目中,我们使用twitter评论作为文本输入。该方法分为测试和训练两个阶段。为了提取特征,我们使用了sentiwordnet。使用基于距离的分类器对特征进行分类。最后利用距离分类器对情感进行极性分析。
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引用次数: 1
An Innovative Approach of Classroom Scheduling: SmartClass: A Review 一种创新的课堂调度方法:SmartClass:综述
Saket Khandelwal
Previously, the classroom scheduling was done manually, which caused a lot of confusion between the programmers. This paper presents the Smart Class, which let the programmers to resolve the problems arise by manually creating the schedules for a classroom via web services. By instigating the service oriented architecture (SOA), which provides a good flexibility and extensibility by acquiring the reusable unit. An inverted classroom, contents contains a video tutorial, which can be visualised outside the classroom, is one of the method which can free the classrooms time.
以前,课堂调度是手动完成的,这导致了程序员之间的很多混乱。本文提出了智能课堂,它允许程序员通过web服务手动创建课堂时间表来解决出现的问题。通过引入面向服务的体系结构(SOA),它通过获取可重用单元提供了良好的灵活性和可扩展性。翻转课堂,内容包含视频教程,可以在课堂外可视化,是解放课堂时间的方法之一。
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引用次数: 2
Implementation of FPGA Based Closed Loop V/f Speed Control of Induction Motor Employed for Industrial Applications 基于FPGA的工业异步电机闭环V/f速度控制的实现
Kavita B. Hunasikatti, R. L. Naik, Basayya V Hiremath
In recent days, Field Programmable Gate Array (FPGA), provides the ability to integrate multiple tasks through the parallel operations. This processor is preferred over DSP for the implementation of controller to control speed of induction motor through power converter employed in industrial applications. This paper presents the implementation of FPGA based closed loop V/F speed control of induction motor. The existing approaches having the limitations of regulating slip and conversion of frequency in proportion to the slip. This issue can be addressed by summing the slip with actual speed during conversion of speed into frequency. Further, this paper focuses on the development of the PI controller using Xilinx block sets to improve the tracking ability of the controller. The developed controller is validated on hardware test bench consisting of FPGA based controller connected to Induction motor drive. Finally, it can be concluded that FPGA processor provides a real deterministic behavior of induction motor employed in industrial applications
近年来,现场可编程门阵列(FPGA)提供了通过并行操作集成多个任务的能力。在工业应用中,该处理器比DSP更适合作为控制器,通过功率转换器控制异步电动机的转速。本文介绍了一种基于FPGA的异步电动机闭环V/F调速的实现方法。现有的方法都存在着滑差调节和频率按滑差比例转换的局限性。这个问题可以通过在将速度转换为频率时将滑移与实际速度相加来解决。此外,本文重点研究了利用赛灵思块集开发PI控制器,以提高控制器的跟踪能力。所开发的控制器在由FPGA控制器与感应电机驱动器连接组成的硬件试验台上进行了验证。最后,可以得出结论,FPGA处理器为工业应用中的感应电机提供了真正的确定性行为
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引用次数: 4
Performance of GitHub Open-Source Software Project: An Empirical Analysis GitHub开源软件项目性能的实证分析
A. Joy, Senthilkumar Thangavelu, Amalendu Jyotishi
The phenomenon of open-source software (OSS) has gained importance among the information technology (IT) firms and software entrepreneurial ventures in the recent years due to its advantages over proprietary closed software including high level of innovation, low cost of development, availability of reusable architectural and functional component, free and unrestrictive access to the source codes. The firms have started recognizing the importance and value of the open source software over the proprietary closed software. It is important to understand and analyze various characteristics of the OSS projects which influence their performance. In this research, we examine OSS project characteristics forks count, number of contributors, project age, project size, project owner, number of programming languages used, primary language intensity, and watchers using 130 project repositories which are started in 2017 from GitHub one of the leading web-based Git version control repository hosting services. A conceptual model of OSS Project performance and hypotheses are developed. The results conclude that the number of programming languages, the project size, the number of contributors, and the project age are showing significant positive influence on the OSS project performance. The project ownership and the primary language are not showing any significant influence on the OSS project performance.
近年来,开源软件(OSS)现象在信息技术(IT)公司和软件创业企业中变得越来越重要,因为它比专有的封闭软件具有优势,包括高水平的创新、低成本的开发、可重用的架构和功能组件的可用性、对源代码的自由和无限制的访问。这些公司已经开始认识到开源软件相对于专有封闭软件的重要性和价值。理解和分析影响OSS项目绩效的各种特征是非常重要的。在这项研究中,我们研究了OSS项目的特征——分叉数量、贡献者数量、项目年龄、项目规模、项目所有者、使用的编程语言数量、主要语言强度,以及使用130个项目存储库的观察者,这些项目存储库是在2017年从GitHub(领先的基于web的Git版本控制存储库托管服务之一)启动的。提出了OSS项目绩效的概念模型和假设。结果表明,编程语言的数量、项目的规模、贡献者的数量和项目的年龄对OSS项目的性能表现出显著的积极影响。项目所有权和主要语言对OSS项目绩效没有任何显著的影响。
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引用次数: 4
A Survey on Autonomous Navigation Techniques 自主导航技术综述
Sushma Uday Kamat, K. Rasane
The unmanned aerial vehicles or drones are gaining popularity because of increased demand for less human intervention in the automotive sector. Customer driven markets are encouraging the unmanned vehicles oriented industries toinnovate towards the average user level. Despite the improvements in the parameters like cost, user friendliness and technological capabilities people hesitate to work with the unmanned vehicle technology and the major reason for this would be the vehicles behavior in the known and unknown environments, the unavoidable obstacles on the path of travel or the doubt on risk factor associated with the collision avoidance system. So this paper presents the various techniques used in the smooth navigation and collision/obstacle avoidance system over past years.
由于汽车行业对减少人为干预的需求增加,无人驾驶飞行器或无人机越来越受欢迎。以客户为导向的市场鼓励以无人驾驶汽车为导向的行业向普通用户水平创新。尽管成本、用户友好性和技术能力等参数有所提高,但人们对无人驾驶汽车技术的使用犹豫不决,其主要原因是车辆在已知和未知环境中的行为,行驶道路上不可避免的障碍物或对避碰系统相关风险因素的怀疑。因此,本文介绍了近年来用于平稳导航和避碰/避障系统的各种技术。
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引用次数: 5
Energy Efficient Dynamic Navigation System 节能动态导航系统
A. Sutagundar, Padmaja Kuruba
In the recent years there is considerable growth in the Vehicular system, driver safety and assistance system. In the current trend, Global positioning system (GPS) is one such system used for navigation assistance. Cell phone has become a part and parcel of many people in the world today. If both cell phone and GPS receiver are operational, it leads to increase in the cost and energy of navigation. The main objective of this work is to reduce the cost and minimize the amount of energy consumed in the navigation system. In this paper we propose, an energy efficient, high accuracy, low cost navigation system architecture for the dynamic navigation using the existing infrastructure. It has three techniques for accessing location maps for the navigation system namely; (1) uses reservoir as the source of location maps for cell phone (without Internet connection). It uses cell phone as interface between the navigation system and the reservoir. (2) It is assumed that some of the vehicles in Vehicular Adhoc Network (VANET) have location information. In this case cell phone is used as an interface between VANET and navigation system for transmission of location map and (3) cell phone uses Internet as the source of location maps and transfers location map to the navigation system. Proposed navigation system comprises of memory, Graphical User Interface (GUI), audio/visual system and short range Radio Frequency(RF) communication system.
近年来,车载系统、驾驶员安全和辅助系统有了相当大的增长。在当前的趋势中,全球定位系统(GPS)就是其中一种用于导航辅助的系统。手机已经成为当今世界上许多人不可或缺的一部分。如果手机和GPS接收器都可以使用,这将导致导航成本和能源的增加。这项工作的主要目标是降低成本和最小化导航系统消耗的能量。本文在现有基础设施的基础上,提出了一种节能、高精度、低成本的动态导航系统架构。它具有三种获取导航系统位置地图的技术,即;(1)利用水库作为手机定位地图的来源(不连接互联网)。它使用手机作为导航系统和水库之间的接口。(2)假设车辆自组网(VANET)中部分车辆具有位置信息。在这种情况下,使用手机作为VANET和导航系统之间的接口,传输位置地图。(3)手机使用互联网作为位置地图的来源,将位置地图传输给导航系统。所提出的导航系统包括存储器、图形用户界面(GUI)、音频/视觉系统和短距离射频通信系统。
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引用次数: 1
Dual Material Gate-Gate Stack-Elliptical Gate All Around (DMG-GS-EG) MOSFET – A Novel Device Concept for Improved Performance 双材料栅极-栅极堆叠-椭圆栅极(DMG-GS-EG) MOSFET -一种改进性能的新器件概念
P. Pandey, Pooja S Puri, H. Kaur
In this paper, an analytical model for Dual Material Gate-Gate Stack-Elliptical Gate All Around (DMG-GS-EG) MOSFET is presented and by solving Poisson’s equation in cylindrical coordinates and using equivalent radius (Reqv), the electrical properties of DMG-GS-EG are studied. A comparative analysis is also done with Single Material Gate-Elliptical Gate All Around (SMG-EG) MOSFET, Single Material Gate-Gate Stack-Elliptical Gate All Around (SMG-GS-EG) MOSFET and Dual Material Gate-Elliptical Gate All Around (DMG-EG) MOSFET to study the effectiveness of the proposed device in suppressing short-channel effects. A detailed analysis has been done over a wide range of parameters and bias conditions and it is shown that the proposed DMG-GS-EG device shows the most improved and reliable results.
本文建立了双材料栅极-栅极堆-椭圆栅极(DMG-GS-EG) MOSFET的解析模型,并在柱坐标下求解泊松方程,利用等效半径(Reqv)研究了DMG-GS-EG的电学特性。并与单材料栅极-椭圆栅极(SMG-EG) MOSFET、单材料栅极-栅极堆叠-椭圆栅极(SMG-GS-EG) MOSFET和双材料栅极-椭圆栅极(DMG-EG) MOSFET进行了对比分析,研究了该器件抑制短通道效应的有效性。在广泛的参数和偏置条件下进行了详细的分析,结果表明,所提出的DMG-GS-EG装置显示出最可靠的改进结果。
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引用次数: 0
Compact CPW Fed Dual Band Omni directional Antenna with Modified Signal Strip 改进信号带的紧凑型CPW馈频双频全向天线
K. S. Johnson, S. Menon
A dual band planar monopole antenna energized using Coplanar Waveguide (CPW) is presented in this paper. The dual band characteristic is achieved by modifying the signal strip of CPW as two different monopoles. The newly developed antenna is resonating at two different frequencies, 2.4GHz and 5.2GHz, making it suitable for Wi-Fi applications. The properties of the antenna such as return loss, gain and radiation pattern are analyzed and optimized using ANSYS HFSS and validated by measurement. The simple structure is the attracting feature of the designed antenna.
提出了一种采用共面波导(CPW)激励的双频平面单极天线。双频特性是通过将CPW的信号带修改为两个不同的单极子来实现的。新开发的天线在2.4GHz和5.2GHz两个不同的频率上共振,使其适合Wi-Fi应用。利用ANSYS HFSS对天线的回波损耗、增益和辐射方向图等特性进行了分析和优化,并进行了实测验证。设计的天线结构简单,具有吸引人的特点。
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引用次数: 1
期刊
2018 Second International Conference on Advances in Electronics, Computers and Communications (ICAECC)
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