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2016 International Conference on Microelectronics, Computing and Communications (MicroCom)最新文献

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Hybrid firefly algorithm based distribution state estimation with regard to renewable energy sources 基于混合萤火虫算法的可再生能源分布状态估计
U. Sur, G. Sarkar
Renewable energy, which is a continuous source of energy, can be classified as the sun, running water, biomass, wind, geothermal sources and ocean currents. Several research works projects about 30% of the total generations will be from Renewable Energy Sources (RES) in future and so it's important to analyze different prospects of RES mainly over distribution networks. In this paper, a new Distribution State Estimation (DSE) with RES has been proposed based on a combination of Genetic Algorithm (GA) and Firefly Algorithm (FA). In case of radial distribution network with different RES, State estimation is generally called mixtribution which is basically an optimization technique. This Hybrid Firefly Algorithm (HFA) can estimate RES and load values using Weighted Least Square (WLS) method with some typical situations like reactive power compensator, tap changing transformer modeling, voltage regulator having nonlinear nature of characteristics. For a better understanding and feasibility of the proposed approach, the algorithm is checked over the IEEE 70 bus test system.
可再生能源是一种持续的能源,可分为太阳、自来水、生物质能、风能、地热资源和洋流。一些研究项目预计,未来可再生能源发电量将占总发电量的30%左右,因此分析可再生能源在配电网上的不同前景非常重要。本文提出了一种基于遗传算法(GA)和萤火虫算法(FA)的分布状态估计(DSE)。对于具有不同RES的径向配电网,状态估计通常称为混合估计,它本质上是一种优化技术。该混合萤火虫算法(HFA)可以针对无功补偿器、分接变换变压器建模、稳压器等具有非线性特性的典型情况,利用加权最小二乘(WLS)方法估计RES和负载值。为了更好地理解所提出的方法和可行性,该算法在IEEE 70总线测试系统上进行了验证。
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引用次数: 7
RFID and pose invariant face verification based automated classroom attendance system 基于RFID和姿态不变人脸验证的自动考勤系统
Srivignessh Pss, M. Bhaskar
A compact and reliable classroom attendance system using RFID and face verification is presented in this paper. The RFID system identifies the student using the RFID card and further identity verification of the student is carried out using face recognition technique. RFID uniquely identifies the student based on the card number, then an individual (Fast Adaptive Neural Network Classifier - FANNC) classifier is used to verify the face of each student exclusively. The system is trained and tested by conducting experiments on FEI face database. Each classifier is trained using face images of each student in seven different head poses and it is tested against six different poses. The performance of the system is tested for frontal face verification, head pose varied face verification and detection of proxy attendance is carried out. It is found that the proposed scheme verifies the identity of the student correctly of about 98% for frontal face and two attempts on poses varied face verification. The proxy attendance detection carried out for frontal face resulted in an efficiency of 73.28% and for different poses resulted in an efficiency of 79.29%.
提出了一种基于RFID和人脸验证的小型、可靠的课堂考勤系统。RFID系统使用RFID卡对学生进行识别,并使用人脸识别技术对学生进行进一步的身份验证。RFID根据卡号唯一识别学生,然后使用单个(快速自适应神经网络分类器- FANNC)分类器专门验证每个学生的面部。在FEI人脸数据库上对该系统进行了训练和测试。每个分类器使用每个学生七种不同头部姿势的面部图像进行训练,并针对六种不同的姿势进行测试。对系统的性能进行了正面人脸验证、头姿变化人脸验证和代理出勤检测。结果表明,该方案对正面人脸和两次姿态变化人脸的验证正确率约为98%。对正面人脸进行代理出勤检测,效率为73.28%,对不同姿态进行代理出勤检测效率为79.29%。
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引用次数: 26
Comparative performance of QPSO and BSA for design of linear array of parallel dipole antennas with mutual coupling QPSO与BSA在互耦平行偶极子天线线阵设计中的性能比较
Hemant Patidar, Ananya Mahanti, Rohit Sharma, G. K. Mahanti
The authors presented two different optimization methods-one is quantum particle swarm optimization (QPSO) and another is backtracking search algorithm (BSA). Combined with inverse fast fourier transform (IFFT), the paper deals with the synthesis of array of linearly spaced and mutually coupled half wavelength very thin vertical and parallel dipoles with fixed value of voltage standing wave ratio (VSWR) and side lobe level. The performances of the two algorithms are compared in terms of different antenna parameters like side lobe level, VSWR as well as statistical parameters such as best fitness value, mean, standard deviation and computation time. There exists mutual coupling among the parallel half-wavelength dipole antennas. Self and mutual impedances are derived from induced EMF method assuming distribution of current on each dipole is sinusoidal. The pattern so generated is broadside in the horizontal plane. There exists a relationship between the IFFT and the array factor for an array of linearly and uniformly spaced isotropic antennas. Array factor is found out by applying inverse fast fourier transform on the element excitations that in turn reduces the computational time. It is assumed that the element pattern of vertical half-wavelength dipole antenna is omni-directional in the horizontal plane. One example is presented to prove the effective use of the approach proposed.
提出了两种不同的优化方法——量子粒子群优化(QPSO)和回溯搜索算法(BSA)。结合快速傅里叶反变换(IFFT),研究了具有固定电压驻波比和旁瓣电平的线性间隔相互耦合半波长极薄垂直和平行偶极子阵列的合成。比较了两种算法在旁瓣电平、驻波比等不同天线参数以及最佳适应度值、均值、标准差和计算时间等统计参数下的性能。平行半波长偶极子天线之间存在相互耦合。假设各偶极子上的电流分布为正弦分布,用感应电动势法推导出自阻抗和互阻抗。这样生成的图案在水平面上是横向的。对于均匀间距线性各向同性天线阵列,IFFT与阵列因子之间存在一定的关系。通过对单元激励进行快速傅里叶反变换来求出阵列因子,从而减少了计算时间。假设垂直半波长偶极子天线的元方向图在水平面上是全向的。最后给出了一个算例,证明了该方法的有效性。
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引用次数: 2
Adaptive gyroscope drift compensation based on temporal noise modelling 基于时间噪声建模的自适应陀螺仪漂移补偿
Priydarshi, Raman Jaiswal, Renju C. Nair, Naveen Krishna Yarlagadda, A. Senapati, Prabhushetty Mulage
Gyroscope is widely used in applications like Indoor navigation, path tracking, motion sensor fusion, Video stabilization etc. This sensor is known for its susceptibility towards bias drift and dynamic errors which compromise the performance and user experience. The static bias error, random white noise and temperature interference makes it difficult to manage the drift in real time applications for hand held devices. This paper categorizes various error sources and their impact on actual gyroscope measurements. Based on the category and experimental observations, inferences are drawn and an Adaptive Bias Correction method proposed to compensate these random and static bias errors. The paper concludes performance and stability of the proposed novel method over various gyroscope chips from different chip manufacturers. Comparison of key performance indicators derived with and without algorithms on various use cases confirms the accuracy of algorithm.
陀螺仪广泛应用于室内导航、路径跟踪、运动传感器融合、视频稳定等领域。这种传感器以其对偏置漂移和动态误差的敏感性而闻名,这会损害性能和用户体验。静态偏置误差、随机白噪声和温度干扰使得在手持设备的实时应用中难以控制漂移。本文对各种误差源进行了分类,并分析了误差源对陀螺仪实际测量的影响。基于分类和实验观察,提出了一种自适应偏差校正方法来补偿这些随机和静态偏差误差。本文总结了该方法在不同芯片制造商的陀螺仪芯片上的性能和稳定性。通过对不同用例下使用和不使用算法得到的关键性能指标的比较,证实了算法的准确性。
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引用次数: 4
Double input DC/DC converter with PV and DC source for standalone applications 双输入DC/DC转换器与光伏和直流电源的独立应用
L. Mitra, U. K. Rout
In this paper the dc-dc converter uses two sources one is PV and other an ideal dc source. This converter can take power from both the sources at a time as well as one at a time. A MPPT has been designed using MATLAB Program. A MPPT has been designed in order to track maximum power from PV cell for different loads. All the simulations are done using MATLAB.
本文的dc-dc变换器采用两种电源,一种是光伏电源,另一种是理想的直流电源。这种转换器可以同时从两个源获取功率,也可以一次从一个源获取功率。利用MATLAB程序设计了一个MPPT。为了跟踪不同负载下光伏电池的最大功率,设计了一个MPPT。所有的仿真都是在MATLAB中完成的。
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引用次数: 2
Multimedia support from cloud computing: A review 云计算对多媒体的支持:综述
Shilpi Harnal, R. Chauhan
In few years, more than 90% of all network traffic will be comprising of multimedia data due to increased usage of mobile devices such as tablets, laptops and mobiles etc. Now the most of the data generated, shared, stored and processed through various sources is multimedia such as data generated by sensor networks, medical records, data from satellite etc. are some examples of such sources. A rich multimedia data requires huge storage and computability capacities. That is not possible because of lower memory, lower computing power and small battery life of mobile devices. This will result into a bad multimedia experience for the mobile users. That's why need of multimedia support from cloud computing has comes into demand. With this support mobile devices can perform heavy multimedia computation and communication even without the need of large storage and computing powers. In this paper, we have taken a review of existing cloud computing environment, its service and deployment models. Along with a review of multimedia cloud computing, its needs and challenges. In last, we have reviewed how an existing general purpose cloud environment can effectively support multimedia computations and communications.
在未来几年内,由于平板电脑、笔记本电脑和手机等移动设备的使用增加,超过90%的网络流量将由多媒体数据组成。现在,通过各种来源产生、共享、存储和处理的大部分数据都是多媒体的,例如传感器网络产生的数据、医疗记录、卫星数据等,这是这些来源的一些例子。丰富的多媒体数据需要巨大的存储能力和可计算能力。这是不可能的,因为移动设备的内存更低,计算能力更低,电池寿命也更短。这将给移动用户带来糟糕的多媒体体验。这就是为什么需要云计算提供多媒体支持的原因。有了这种支持,移动设备可以执行繁重的多媒体计算和通信,甚至不需要大型存储和计算能力。在本文中,我们回顾了现有的云计算环境,它的服务和部署模型。同时综述了多媒体云计算的需求和面临的挑战。最后,我们回顾了现有的通用云环境如何有效地支持多媒体计算和通信。
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引用次数: 8
Mutual coupling reduction between microstrip patch antennas by using a string of H-shaped DGS 利用一串h形DGS减小微带贴片天线间的互耦
J. Acharjee, K. Mandal, S. K. Mandal, P. Sarkar
In this paper a novel structure is proposed to reduce the mutual coupling between two coplanar microstrip antennas which resonates at the same frequency band. A simple string of H-shaped DGS is placed in between two antennas to reduce the mutual coupling. Simulated result shows that the reduction of mutual coupling up to 50dB is achieved without affecting the radiation behavior of the antennas.
本文提出了一种新的结构,以减少在同一频段谐振的两个共面微带天线之间的相互耦合。在两个天线之间放置一串简单的h形DGS以减少相互耦合。仿真结果表明,在不影响天线辐射性能的情况下,可将天线的互耦降低50dB。
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引用次数: 15
An efficient approach to dynamic channel assignment problem using genetic algorithm 利用遗传算法求解动态信道分配问题
J. Dutta, Sheuli Chakraborty, Partha Sarathi Barma, S. Kar
With the rapid enlargement in mobile communication, the bandwidth has become the most challenging resource. The total available bandwidth spectrum is divided in to some channels and that are allocated to different mobile hosts that belongs to some cells at the time of initiation of a call. So channel allocation must be done efficiently. In case of static allocation when number of mobile host increases in a particular cell, it gets overloaded. Where dynamic channel allocation minimizes the problem and increases channel utilization. But the dynamic channel allocation has to follow distributed approaches because centralized allocation is neither scalable nor reliable. In case of distributed approaches the mobile base station takes the responsibility of allocating channels to the mobile stations that correspond to the same cell. Such allocations must be made considering minimized interference between calls, while satisfying the demands for channels. We have analyzed this optimization problem by using genetic algorithm (GA). The proposed method is studied with the data of some benchmark problems, taken from the literature, and the results are obvious.
随着移动通信规模的迅速扩大,带宽已成为最具挑战性的资源。总可用带宽频谱被划分为若干信道,这些信道在发起呼叫时被分配给属于若干小区的不同移动主机。因此,必须有效地分配信道。在静态分配的情况下,当一个特定单元中的移动主机数量增加时,它会过载。其中动态信道分配最小化了问题并增加了信道利用率。但是动态通道分配必须遵循分布式方法,因为集中式分配既不可扩展也不可靠。在分布式方法的情况下,移动基站负责向对应于同一小区的移动站分配信道。这样的分配必须考虑尽量减少呼叫间的干扰,同时满足信道需求。利用遗传算法对该优化问题进行了分析。利用文献中一些基准问题的数据对所提出的方法进行了研究,得到了明显的结果。
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引用次数: 0
Effects of non-ionizing electromagnetic radiation on capsicum annuum seed germination and subsequent sapling growth — A time study 非电离电磁辐射对辣椒种子萌发及幼苗生长影响的时间研究
Ardhendu Kundu, B. Gupta, A. I. Mallick, S. K. Pal
Continuous exposure to non-ionizing electromagnetic radiation is a matter of concern for safety of human health. In this regard, several international and national Radio Frequency (RF) exposure guidelines and Specific Absorption Rate (SAR) limits are prescribed as precautionary measure to minimize the human health risk associated with exposure from non-ionizing RF sources. Apart from its impact on public health, on the other hand, terrestrial plants are being exposed to continuous non-ionizing electromagnetic radiation without any shielding. Consequently plants absorb huge amount of RF energy because of their higher permittivity and loss tangent. In the present investigation, germination and subsequent growth of Capsicum annuum have been studied under exposure to RF radiation following pot-culture technique. Two earthen pots filled in with fertilized soil have been taken and fifty healthy viable Capsicum annuum seeds have been sown in each pot for germination and subsequent growth. One of the pots has been exposed to GSM cell phone non-ionizing RF radiation and the other has been considered as control. Morphological characteristics of both control and RF exposed Capsicum annuum seeds and subsequent saplings have been studied; consequently significant reduction is observed in number of germinated Capsicum annuum saplings in GSM cell phone radiation exposed pot compared to control pot which has been maintained in natural environment.
持续暴露于非电离电磁辐射是一个令人关切的人类健康安全问题。在这方面,规定了若干国际和国家射频接触准则和特定吸收率限值,作为预防措施,以尽量减少与非电离射频源接触有关的人类健康风险。另一方面,除了对公众健康的影响外,陆生植物正在遭受没有任何屏蔽的持续非电离电磁辐射。因此,植物由于其较高的介电常数和正切损耗而吸收了大量的射频能量。在本研究中,研究了盆栽技术下射频辐射对辣椒萌发和随后生长的影响。取了两个装满了肥沃土壤的土盆,在每个盆里播种了50颗健康的活辣椒种子,以便发芽和随后的生长。其中一个罐子暴露在GSM手机非电离射频辐射中,另一个被认为是对照组。研究了对照和射频辐照辣椒种子及其后续幼苗的形态特征;结果表明,在GSM手机辐射暴露的盆栽中,辣椒幼苗的发芽率明显低于在自然环境下保持的对照盆栽。
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引用次数: 1
Compact multiband rectangular antenna for wireless communication 用于无线通信的小型多波段矩形天线
B. Roy, A. Jain, P. Das, S. Chowdhury, A. Bhattacharjee
Compact multiband cross slot rectangular microstrip patch antenna is introduced in this paper. Here one close ended rectangular slot in ground plane and one cross slot in patch are given to excite different resonant frequencies. The correct probe feed location along with the exact slot position gave the promising result. The proposed antenna meets the requirement of impedance bandwidth, return loss and gain of resonant band for IEEE 802.11a and IEEE 802.11b WLANs application that allocate channels in 2.5GHz and between 5.15 to 5.825 GHz.
介绍了一种小型多频带交叉槽矩形微带贴片天线。在接平面上设置一个闭合矩形槽,在贴片上设置一个交叉槽来激发不同的谐振频率。正确的探针进给位置和精确的槽位给出了令人满意的结果。该天线满足IEEE 802.11a和IEEE 802.11b无线局域网在2.5GHz和5.15 ~ 5.825 GHz频段分配信道的应用对阻抗带宽、回波损耗和谐振频带增益的要求。
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引用次数: 2
期刊
2016 International Conference on Microelectronics, Computing and Communications (MicroCom)
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