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2016 International Conference on Computer, Electrical & Communication Engineering (ICCECE)最新文献

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Avalanche noise in magnetic field tunable avalanche transit time device 磁场可调谐雪崩穿越时间装置中的雪崩噪声
P. Banerjee, Q. Hao, A. Biswas, A. Bhattacharjee, A. Acharyya
Influences of magnetic field on the noise performance of double-drift region (DDR) impact avalanche transit time (IMPATT) device based on Si designed to operate within W-band (75–110 GHz) have been studied in this paper. The reverse biased DDR IMPATT structure under transverse magnetic field can be regarded as magnetic field tunable avalanche transit time (MAGTATT) device. The simulation results show that both the noise spectral density and noise measure of the device increase significantly while the device is kept in transverse magnetic field. This degradation of the noise performance of the device enhances when the magnitude of the magnetic field is increased. Therefore, in order to achieve the magnetic field tuning of the RF properties of DDR IMPATTs as reported earlier by the authors, the noise performance of the source has to be sacrificed in fair extent.
本文研究了磁场对工作在w波段(75 ~ 110 GHz)的双漂移区(DDR)冲击雪崩传递时间(IMPATT)器件噪声性能的影响。横向磁场作用下的反向偏置DDR IMPATT结构可视为磁场可调雪崩传递时间(MAGTATT)器件。仿真结果表明,当器件保持在横向磁场中时,器件的噪声谱密度和噪声量均有显著增加。当磁场的大小增加时,器件的噪声性能的这种退化会增强。因此,为了实现作者先前报道的DDR IMPATTs射频特性的磁场调谐,必须在相当程度上牺牲源的噪声性能。
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引用次数: 2
Recognition of offline handwriten Devanagari numerals using regional weighted run length features 基于区域加权行程长度特征的离线手写德文数字识别
P. Singh, Supratim Das, R. Sarkar, M. Nasipuri
Recognition of handwritten Roman characters and numerals has been extensively studied in the last few decades and its accuracy reached to a satisfactory state. But the same cannot be said while talking about the Devanagari script which is one of most popular script in India. This paper proposes an efficient digit recognition system for handwritten Devanagari script. The system uses a novel 196-element Mask Oriented Directional (MOD) features for the recognition purpose. The methodology is tested using five conventional classifiers on 6000 handwritten digit samples. On applying 3-fold cross-validation scheme, the proposed system yields the highest recognition accuracy of 95.02% using Support Vector Machine (SVM) classifier.
在过去的几十年里,人们对手写罗马文字和数字的识别进行了广泛的研究,其准确性达到了令人满意的状态。但在谈论印度最流行的文字之一Devanagari时,就不能这么说了。提出了一种高效的手写体梵文数字识别系统。该系统采用新颖的196元掩模定向(MOD)特征进行识别。该方法使用五种传统分类器在6000个手写数字样本上进行了测试。采用3重交叉验证方案,采用支持向量机(SVM)分类器,系统的识别准确率最高,达到95.02%。
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引用次数: 11
A novel linearly bounded secret sharing scheme that supports prioritization of shares 一种新颖的支持共享优先级的线性有界秘密共享方案
Subhajyoti Barman, Hiran Nandy, S. Biswas
Secret Sharing is a technique of decomposing a secret into number of shares in such a manner that reconstruction of the secret is only possible by a subset of shares that has at least a specific minimum size. Adi Shamir and George Blackley individually proposed the idea of Secret Sharing for the first time, but high computational complexity and noise like shares are the main issues of these schemes. However, using current state of the art schemes it is possible to perform this task in linear time without producing noise like shares. Providing special privilege to a subset of shares is not supported by the existing schemes. It would be a novel concept if it is possible to assign special priority to a set of shares during decomposition of secrets. Hence a linear time bounded scheme is being proposed which decomposes any secret into N number of shares among which M (M≤N) of them are specially privileged. During reconstruction of the actual secret, a subset of shares with a minimum size K (M≤K≤N) which essentially contains all the specially privileged shares or mandatory shares is required.
秘密共享是一种将秘密分解为多个共享的技术,通过这种方式,秘密只能通过至少具有特定最小大小的共享子集来重建。Adi Shamir和George Blackley首次单独提出了秘密共享的思想,但这些方案的主要问题是高计算复杂度和像共享这样的噪声。然而,使用当前最先进的方案,可以在线性时间内执行此任务,而不会产生像股票那样的噪声。现有计划不支持为股份子集提供特权。如果能够在秘密分解过程中为一组股份分配特殊的优先级,这将是一个新颖的概念。因此,提出了一种线性时限方案,将任意秘密分解为N个股份,其中M (M≤N)个股份享有特权。在实际秘密的重建过程中,需要一个最小大小为K (M≤K≤N)的股份子集,该子集本质上包含了所有特权股份或强制股份。
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引用次数: 0
Enhancement of optical absorption in Plasmonic thin film solar cell 等离子体薄膜太阳能电池光吸收的增强
P. Sarkar, Saradindu Panda, B. Maji, A. Mukhopadhyay
Recently, plasmonics gives very much interest and closely involves in the main domains of nanophotonics that can control of optical fields at the nanoscale level. Its remarkable property is to concentrate and enhance the electromagnetic field on the nanometres scale especially in solar cell. In plasmonic field, Nobel metals used as nanoparticle where density of electron gas which oscillates at surface Plasmon frequency at the same time also improves absorption by scattering. So the use of plasmonic in solar cell gives better opportunity to enhance efficiency by absorption as the optical spectrum loss are main part of total loss in solar cell. So we investigate the induction of surface Plasmon theory for enhancement of extinction in terms of absorption and scattering. In this paper, we also studied finite-difference time domain based proposed model and find various plasmonic field component of Eigen value and characterized optical improvement in plasmonic thin film solar cell.
近年来,等离子体在纳米光子学的主要领域引起了人们的极大兴趣,并与纳米级光场控制密切相关。它的显著特性是在纳米尺度上集中和增强电磁场,特别是在太阳能电池中。在等离子体场中,用诺贝尔金属作为纳米粒子,同时以表面等离子体频率振荡的电子气体密度也通过散射提高吸收。由于光谱损耗是太阳能电池总损耗的主要部分,因此等离子体在太阳能电池中的应用为吸收提高效率提供了更好的机会。因此,我们从吸收和散射的角度研究了表面等离子体理论对消光增强的诱导作用。本文还对基于时域有限差分模型进行了研究,发现了等离子体薄膜太阳能电池中各等离子体场分量的本征值,并对其光学性能进行了表征。
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引用次数: 0
Encoding algorithm using bit level encryption and decryption technique 编码算法采用位级加解密技术
Souvik Singha, Mainak Sen
Encryption helps us to store valuable information and send it across insecure networks so that it cannot be read by anyone except the intended recipient. Encryption is a process in which the sender encrypts or scrambles the message in such a way that only the recipient will be able to decrypt the message with the knowledge of the proper key. With the growth of internet, the need for secure data transmission become more essential and important, as security is a major concern in the internet world. So the plain text should be codified by the process of encryption. Different types of data have their own features, thus different techniques should be used to protect confidential data from unauthorized access. We propose in this paper bit level encryption and decryption algorithm based on number of keys which can encrypt the 8 bit binary no to its corresponding 8 bit cipher text and a decryption algorithm which can convert that 8 bit cipher text to its corresponding 8 bit original no. It can also be extended to 16, 32 bit binary number.
加密帮助我们存储有价值的信息,并通过不安全的网络发送,这样除了预期的接收者之外,任何人都无法读取这些信息。加密是这样一个过程:发送方对消息进行加密或加扰,只有接收方知道正确的密钥才能解密消息。随着互联网的发展,对安全数据传输的需求变得更加必要和重要,因为安全是互联网世界的主要关注点。因此,纯文本应该通过加密过程进行编码。不同类型的数据有自己的特点,因此应该使用不同的技术来保护机密数据不受未经授权的访问。本文提出了一种基于密钥数的位级加解密算法,可以将8位二进制no加密为对应的8位密文,并提出了一种将8位密文转换为对应的8位原始no的解密算法。也可以扩展为16、32位二进制数。
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引用次数: 6
Model order reduction of high order LTI system using particle swarm optimisation 基于粒子群优化的高阶LTI系统模型降阶
Seema Das, R. Jha
Any realistic model will have high complexity, In other words it will require many state variables to be adequately described. The resulting complexity, i.e. number of first-order differential equations, is such that a simplification or model reduction will be needed in order to perform a simulation in an amount of time which is acceptable for the application at hand, or for the design of a low order controller which achieves desired objectives. Thus in all these cases reduced-order models are needed. The motivation for appropriate MOR is to obtain an accurate model of smaller order which can be easily simulated and implemented in hard ware with ease saving effort, cost and time. This paper proposes a numerically efficient model order reduction method using evolutionary technique, Particle Swarm Optimisation (PSO). PSO method is based on the minimization of the Integral Squared Error (ISE) between the transient responses of original higher order and the reduced order model pertaining to a unit step input. This ISE is very useful in performance evaluation. The simulation result shows the effectiveness of the proposed scheme to obtain the stable second order reduced stable model from a stable seventh and fifth order original system with minimum error bound.
任何现实的模型都将具有很高的复杂性,换句话说,它将需要许多状态变量来充分描述。由此产生的复杂性,即一阶微分方程的数量,需要简化或模型缩减,以便在当前应用程序可接受的时间内执行模拟,或设计实现预期目标的低阶控制器。因此,在所有这些情况下都需要降阶模型。适当的MOR的动机是获得一个精确的小订单模型,可以很容易地在硬件中模拟和实现,从而节省精力、成本和时间。本文提出了一种利用进化技术粒子群优化(PSO)的数值高效模型降阶方法。粒子群算法基于单位阶跃输入的原高阶模型与降阶模型的瞬态响应之间的积分平方误差(ISE)的最小化。这个ISE在绩效评估中非常有用。仿真结果表明,该方法能够以最小的误差界从稳定的七阶和五阶原始系统得到稳定的二阶降阶稳定模型。
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引用次数: 1
Towards a decision support system by the study of cell malfunctions for breast cancer 通过对乳腺癌细胞功能障碍的研究建立一个决策支持系统
Sampurna Mandal, Supratim Bhattacharya, Jayanta Poray
Breast cancer is one of the leading cause of death for women today and it is the most common cancer in developed countries. The cause and degree of the breast cancer are very much associated with the malfunctions of its tissues and cells. It is very hard and rigorous task for the doctors to observe the clinical records for many affected patients and regulate the therapy manually. Therefore, it is very much necessary to properly process the bulk amount of clinical records (containing cell details) automatically and come with the best possible treatment for the affected patients. In this work we have proposed a decision support system with the help of two data mining techniques; namely, decision tree learning and association rules mining. Clinical data have been studied, pre-processed and analyzed with the help of a data mining tool (e.g., WEKA). Finally, as an outcome we come with the decision support tool for practical purpose.
乳腺癌是当今妇女死亡的主要原因之一,也是发达国家最常见的癌症。乳腺癌的病因和程度与其组织和细胞的功能失常密切相关。对许多患者进行临床记录的观察和人工调节治疗是一项非常艰苦和严格的任务。因此,自动正确处理大量临床记录(包含细胞细节)并为受影响的患者提供最佳治疗是非常必要的。在这项工作中,我们提出了一个基于两种数据挖掘技术的决策支持系统;即决策树学习和关联规则挖掘。临床数据已经在数据挖掘工具(如WEKA)的帮助下进行了研究、预处理和分析。最后,作为一个结果,我们为实际目的提供了决策支持工具。
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引用次数: 0
Thermocouple sensor fault detection using Auto-Associative Kernel Regression and Generalized Likelihood Ratio Test 基于自关联核回归和广义似然比检验的热电偶传感器故障检测
N. Sairam, S. Mandal
In nuclear power plants, sensor health condition monitoring is necessary to ensure the correctness of measurements. Out-of-calibration sensor data can direct to take inappropriate action of system monitoring and controlling application. Continuous sensor status monitoring is desirable to assure smooth running of the plant and reduce maintenance costs associated with unnecessary manual sensor calibrations. In this paper, an online sensor fault detection technique is proposed using Auto-Associative Kernel Regression (AAKR) and Generalized Likelihood Ratio Test. The AAKR method is used to approximate the data and the GLRT is applied as a metric to detect the faulty sensor on the residual space, the deviation of approximated data from the original. This paper claims that the AAKR-GLRT based fault detection method is better than the PCA-Q-statistic. The method is validated by the real data from the Fast Breeder Test Reactor (FBTR).
在核电站中,传感器健康状态监测是保证测量结果正确性的必要手段。传感器数据的偏差会导致系统监控应用采取不适当的措施。为了确保工厂的平稳运行,减少不必要的手动传感器校准带来的维护成本,需要对传感器状态进行连续监测。提出了一种基于自关联核回归(AAKR)和广义似然比检验的传感器故障在线检测技术。使用AAKR方法对数据进行近似,并使用GLRT作为度量来检测残差空间上的故障传感器,即近似数据与原始数据的偏差。本文认为,基于AAKR-GLRT的故障检测方法优于pca - q统计量。该方法通过快中子增殖试验堆(FBTR)的实测数据进行了验证。
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引用次数: 5
Study on modeling & control of three phase quasi Z-source inverter for power conversion 三相准z源逆变器的建模与控制研究
P. Dhara, P. Gayen, R. Garai
This paper presents modeling and control of quasi Z-source inverter (qZSl) for a particular amount of dc to ac power conversion to supply isolated electrical load. Necessary analysis and design of qZSI is included in this paper. This qZSI is capable of supplying three phase, 50 Hz, 400 V, 50 KW power load. In this context voltage boosting (DC: 273V to AC: 400Vrms) and DC to AC power (50 KW) conversion are simultaneously done in one step. Hence suitable pulse width modulation (PWM) control signals are generated to control three-phase qZSI for applying into particular load mentioned above. Thus, this paper emphasizes on power handling capability of qZSI along with its voltage boosting action. This concept is validated by appropriate simulation study using MATLAB-SIMULINK 2014b software and PWM signals are also realized in hardware platform.
本文介绍了准z源逆变器(qZSl)的建模和控制,用于一定数量的直流到交流电源的转换,以提供隔离的电力负载。本文对qZSI进行了必要的分析和设计。该qZSI能够提供三相,50hz, 400v, 50kw的电力负载。在这种情况下,升压(直流:273V到交流:400Vrms)和直流到交流功率(50kw)的转换同时在一个步骤中完成。因此,产生合适的脉宽调制(PWM)控制信号来控制三相qZSI应用于上述特定负载。因此,本文着重研究了qZSI的功率处理能力及其升压作用。利用MATLAB-SIMULINK 2014b软件对这一概念进行了相应的仿真研究,并在硬件平台上实现了PWM信号。
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引用次数: 4
Human health monitoring system based on piezoelectric smart sensor 基于压电智能传感器的人体健康监测系统
B. Mahanty, S. Mondal, U. Sahu, S. Patra, D. Mandal
Detection of pulse in a human body plays an important role for Health Monitoring and treatment of diseases. In this work we have streamlined our efforts towards obtaining a solution for long-term heart rate monitoring system that can be used at home as well as medical establishments. We have made a comparative study here of the microfibers of the materials poly vinylidene fluoride (PVDF) and lead zirconate titanate (PZT) with the help of COMSOL to understand the suitability of these materials in capturing pulse signals. PZT shows higher electric potential of 21.8 V compared to PVDF which shows 11.6 V for a single microfiber. Therefore here we use a PZT disc sensor in conjunction with Arduino UNO and Arduino IDE to detect the pulse signal and count them. The main objective of this paper is to provide a simple and non-invasive device which while eliminating human errors also allows remote monitoring of patients and at the same time reduces the average time required by the doctor to analyze the patient's health condition.
脉搏检测对人体健康监测和疾病治疗具有重要意义。在这项工作中,我们简化了我们的努力,以获得一种长期心率监测系统的解决方案,可以在家庭和医疗机构中使用。在COMSOL软件的帮助下,我们对聚偏氟乙烯(PVDF)和锆钛酸铅(PZT)材料的微纤维进行了对比研究,以了解这些材料在捕获脉冲信号方面的适用性。与PVDF相比,PZT显示出更高的电位21.8 V, PVDF显示单个微光纤的11.6 V。因此,这里我们使用PZT圆盘传感器结合Arduino UNO和Arduino IDE来检测脉冲信号并计数。本文的主要目的是提供一种简单且无创的设备,在消除人为错误的同时,还可以远程监控患者,同时减少医生分析患者健康状况所需的平均时间。
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引用次数: 4
期刊
2016 International Conference on Computer, Electrical & Communication Engineering (ICCECE)
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