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2013 International Conference on Control, Computing, Communication and Materials (ICCCCM)最新文献

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Slurry erosive wear study of d-gun sprayed coatings on SAE 431 d-gun喷涂sae431涂层的浆液冲蚀磨损研究
A. S. Yadav, S. Mishra
The main aim of the present work is is to investigate the slurry erosion behavior of Al2O3-40TiO2 and Al2O3-13TiO2 ceramic coatings deposited using d-gun thermal spray process characteristics resulting in quality coating. Slurry erosion testing was performed using a pot-type slurry erosion tester to evaluate slurry erosion resistance of the coatings. Three parameters are considered for slurry erosion wear testing viz. Impingement angle, slurry concentration and type of coating used. Surface morphology was examined using SEM images. The erosion behavior and mechanism of material removal was studied and discussed based on microstructural examination. It was observed that Al2O3-13TiO2 ceramic coatings deposited on SAE 431 exhibits higher slurry erosion resistance under all testing conditions as compared to Al2O3-40TiO2 and uncoated substrate material.
本工作的主要目的是研究利用d枪热喷涂沉积Al2O3-40TiO2和Al2O3-13TiO2陶瓷涂层的浆液侵蚀行为,从而获得高质量的涂层。采用罐式浆液侵蚀试验机进行了浆液侵蚀试验,以评估涂层的抗浆液侵蚀性能。浆液冲蚀磨损试验考虑三个参数:冲击角、浆液浓度和所用涂层类型。用SEM图像检测表面形貌。在金相检验的基础上,对材料的侵蚀行为和去除机理进行了研究和探讨。结果表明,在SAE 431上沉积的Al2O3-13TiO2陶瓷涂层在所有测试条件下都比Al2O3-40TiO2和未涂覆的衬底材料具有更高的抗浆液侵蚀性能。
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引用次数: 1
A conceptual comparison of firefly algorithm, bat algorithm and cuckoo search 萤火虫算法、蝙蝠算法和布谷鸟算法的概念比较
Sankalap Arora, Satvir Singh
There are various mathematical optimization problems that can be effectively solved by metaheuristic algorithms. The advantage of these algorithms is that they perform iterative search processes which efficiently perform exploration and exploitation in the domain space containing local and global optima. In this context, three types of metaheuristic algorithms called firefly algorithm, bat algorithm and cuckoo search algorithm were used to find optimal solutions. Firefly is inspired by behavior of flies, bat algorithm is based on the echolocation behavior of bats while in cuckoo search, a pattern corresponds to a nest and similarly each individual attribute of the pattern corresponds to a cuckoo-egg. A series of computational experiments using each algorithm were conducted. Experimental results were analyzed and it is observed that firefly algorithm seems to perform better than bat algorithm and cuckoo search.
元启发式算法可以有效地解决各种数学优化问题。这些算法的优点是它们执行迭代搜索过程,有效地在包含局部和全局最优的域空间中进行探索和开发。在此背景下,采用萤火虫算法、蝙蝠算法和布谷鸟搜索算法三种元启发式算法来寻找最优解。萤火虫的灵感来自苍蝇的行为,蝙蝠的算法是基于蝙蝠的回声定位行为,而在布谷鸟搜索中,一个模式对应一个巢,同样,模式的每个个体属性对应一个布谷鸟蛋。利用每种算法进行了一系列的计算实验。对实验结果进行了分析,发现萤火虫算法似乎比蝙蝠算法和布谷鸟算法表现得更好。
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引用次数: 71
Proximity aware load balancing using node conditions 使用节点条件的邻近感知负载平衡
Pooja Gandodhar, S. Deshmukh
Conventional load balancing schemes are efficient at increasing the utilization of CPU, memory, and disk I/O resources in a Distributed environment. Most of the existing load-balancing schemes ignore network proximity and heterogeneity of nodes. Those schemes follow the technique of self-owned resource based load balancing. But load balancing involves more challenges due to lack of sources for some of the tasks. Hence it is not always possible the task get all required resources on a single node. Here we have to consider node conditions i. e. the other nodes situated in its context. The task which lack with some of the resources will try to negotiate those resources with these contextual nodes. Then a task can complete and the resources utilized will be released. Doing this we are able to reduce load migrations. This proposed scheme not only works well with heterogeneous nodes but also considers proximity in them. Our result shows more than 20% reduction in communication costs than the previous methods based on self-owned resource distribution of nodes.
在分布式环境中,传统的负载平衡方案可以有效地提高CPU、内存和磁盘I/O资源的利用率。大多数现有的负载均衡方案都忽略了网络的接近性和节点的异构性。这些方案遵循基于自有资源的负载平衡技术。但是,由于缺乏某些任务的资源,负载平衡涉及更多挑战。因此,任务在单个节点上获取所需的所有资源并不总是可能的。这里我们必须考虑节点条件,即位于其上下文中的其他节点。缺少某些资源的任务将尝试与这些上下文节点协商这些资源。然后一个任务可以完成,所使用的资源将被释放。这样我们就可以减少负载迁移。该方案不仅能很好地处理异构节点,而且考虑了异构节点之间的接近性。我们的研究结果表明,与以往基于节点自有资源分配的方法相比,通信成本降低了20%以上。
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引用次数: 0
Design and analysis of FINFET pass transistor based XOR and XNOR circuits at 45 nm technology 基于45纳米技术的XOR和XNOR电路的FINFET通管设计与分析
N. Yadav, S. Khandelwal, S. Akashe
The conventional single-gate MOSFETs faces great challenges in scaling down of devices due to the severe short-channel effects that reason an exponential gain in the leakage current. To minimize the short channel effect Double-gate FinFET can be used in place of conventional MOSFET circuits because of the self-alignment of the two gates. Design of XOR and XNOR circuits is suggested to improve the speed and power of these circuits and is basic building block of many arithmetic circuits. This paper compares and evaluates the performance of various designs of pass transistor based XOR and XNOR circuits. This paper demonstrates comparative performance study of high speed, low power and low voltage on XOR and XNOR digital circuit. The performances of XOR and XNOR circuits are based on CADANCE VIRTUOSO tool at 45 nm by applying voltage supply 0.7 voltages and the temperate is 27°C. Simulation results reveal low power, delay, power, delay product (PDP), average dynamic power consumption, energy delay product (EDP).
由于严重的短通道效应导致漏电流呈指数级增长,传统的单栅mosfet在器件缩小方面面临巨大挑战。为了最大限度地减少短通道效应,双栅极FinFET可以用来代替传统的MOSFET电路,因为两个栅极的自对准。建议设计异或和异或电路,以提高这些电路的速度和功率,是许多算术电路的基本组成部分。本文比较和评价了基于通型晶体管的各种异或与非或电路设计的性能。本文对异或与异或数字电路进行了高速、低功耗、低电压的性能对比研究。XOR和XNOR电路的性能基于CADANCE VIRTUOSO工具,在45 nm处施加0.7电压,温度为27°C。仿真结果揭示了低功耗、延迟、功率、延迟积(PDP)、平均动态功耗、能量延迟积(EDP)。
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引用次数: 15
Maximum power extraction for direct driven variable speed wind turbine system using PMSG and fixed pitch angle 采用PMSG和固定俯仰角直接驱动变速风力发电系统的最大功率提取
D. Sahu
This paper proposes a simple technique to extract maximum power at a particular wind speed of a wind energy conversion system (WECS). This system uses permanent magnet synchronous generator (PMSG), uncontrolled rectifier, DC-DC boost converter and a resistive load. It utilizes the DC current and DC voltage obtained after rectification to calculate DC power and to control the duty cycle of the DC-DC boost converter to obtain maximum power point tracking (MPPT). From the measurement of DC current and voltage, maximum DC power can be tracked and optimum value of power coefficient of wind turbine (Cp) can be reached. The advantage of proposed system is that no prior knowledge of wind speed characteristics as well as wind generator optimal power characteristics is required. This system uses fixed pitch angle.
本文提出了一种在特定风速下提取风能转换系统(WECS)最大功率的简单技术。该系统采用永磁同步发电机(PMSG)、无控整流器、DC-DC升压变换器和阻性负载。它利用整流后得到的直流电流和直流电压来计算直流功率,并控制DC-DC升压变换器的占空比,以获得最大功率点跟踪(MPPT)。通过对直流电流和电压的测量,可以跟踪到最大直流功率,得到风力机功率系数的最优值Cp。该系统的优点是不需要事先知道风速特性和风力发电机的最优功率特性。该系统采用固定俯仰角。
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引用次数: 6
The impact of transformation function on the classification ability of complex valued extreme learning machines 变换函数对复值极值学习机分类能力的影响
Rampal Singh, Nikhitha Kishore
Classification is a rather omnipresent problem in many of the technological areas ranging from image processing to medical applications. With complex-valued neural network classifiers posing better decision making capabilities due to its orthogonal decision boundaries and it's comparatively better computational capability many complex valued neural network (CVNN) classifiers has been presented in literature. In this paper a review on the state of the art on a family of CVNNs known as complex valued extreme learning machines (CELM) is presented. With their better generalization ability and lesser computational efforts for classification problems CELMs provide a better solution for real-valued classification problems. The four CELMs that is used for solving real valued classification problems namely, Circular CELM (CC-ELM), Phase encoded CELM (PE-CELM), Bilinear Branch cut CELM (BB-CELM) and Fast Learning Complex valued Neural Classifier (FLCNC). The evaluations are done based on the datasets available in the UCI repository. Through this study it could proved that the synergy between the ELM and CVNN has brought better results in the classification arena.
分类是一个相当普遍的问题,在许多技术领域,从图像处理到医疗应用。复值神经网络分类器由于其决策边界的正交性和相对较好的计算能力而具有较好的决策能力,目前已有文献提出了许多复值神经网络分类器。本文综述了一类被称为复值极限学习机(CELM)的cvnn的研究现状。celm具有较好的泛化能力和较少的分类问题计算量,为实值分类问题提供了较好的解决方案。用于解决实值分类问题的四种CELM分别是:圆形CELM (CC-ELM)、相位编码CELM (PE-CELM)、双线性分支切CELM (BB-CELM)和快速学习复值神经分类器(FLCNC)。评估是基于UCI存储库中可用的数据集完成的。通过本研究可以证明ELM和CVNN的协同在分类领域带来了更好的效果。
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引用次数: 2
Selective Duty cycle Algorithm for beacon-enabled Low Rate Wireless Personal Area Networks 基于信标的低速率无线个人区域网络的选择性占空比算法
Vaishali Sahu, G. Sharma, V. Krishna Rao K
Today in various fields, Low-Rate Wireless Personal Area Network (LR-WPAN) with IEEE 802.15.4 can be utilized for various applications such as Home Automation, Factory Automation, Search & Rescue, Environmental Control, Health Monitoring, etc. In some of the applications, there is no issue of energy consumption; however, there are so many in which energy consumption is a major issue. In fact, performance of the standard should be optimized according to the traffic condition and application. In this paper, performance of IEEE 802.15.4 or Low-Rate WPAN is analyzed with the variation of Superframe Order (SO) or Duty Cycle. On the basis of performance analysis, a Selective Duty cycle Algorithm (SDA) is proposed which can be employed to optimize the performance of the standard according to the packet rate. Through simulations, it is shown that SDA is performing well as compared to other duty cycles.
如今,在各种领域,IEEE 802.15.4的低速率无线个人区域网络(LR-WPAN)可用于各种应用,如家庭自动化,工厂自动化,搜索和救援,环境控制,健康监测等。在一些应用中,没有能源消耗的问题;然而,在许多国家,能源消耗是一个主要问题。实际上,该标准的性能应根据交通状况和应用进行优化。本文分析了IEEE 802.15.4或低速率WPAN在超帧序(SO)或占空比变化下的性能。在性能分析的基础上,提出了一种可根据分组速率优化标准性能的选择性占空比算法(SDA)。仿真结果表明,与其他占空比相比,SDA具有良好的性能。
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引用次数: 0
Comparative analysis of QoS for WiMAX and 3G networks WiMAX与3G网络的QoS比较分析
Jaya Singh, E. Agrawal
Wireless network is one of the wide areas of interest due to the advanced services they provide. As in the modern era, advanced technologies in wireless network are developing at a rapid rate so it is also necessary to increase the quality & services of them. Recently developed technology like 3G, Wi-Fi, WiMAX, LTE etc are widely used over the world and provides many varieties of services. This paper comparatively analyze the two advanced technology of wireless network: WiMAX and 3G network on the basis of several parameters like energy efficiency, QoS etc to evaluate their performance to find out which networks present the best services and advantages. The metrics used for performance evaluation are Average Jitter, Average Delay, Energy Consumption, Average Queue length, Signal Received with Errors, Total unicast data sent & received, Unicast received Throughput of the WiMAX and 3G network using QualNet 6.1 simulator.
无线网络由于其提供的先进服务而成为广泛关注的领域之一。在当今时代,无线网络的先进技术正在快速发展,因此提高无线网络的质量和服务也很有必要。最近开发的技术,如3G, Wi-Fi, WiMAX, LTE等在世界范围内广泛使用,并提供多种服务。本文通过对WiMAX和3G两种先进的无线网络技术进行比较分析,从能效、QoS等几个参数对其性能进行评价,找出哪一种网络能提供最好的服务和优势。用于性能评估的指标是使用QualNet 6.1模拟器的WiMAX和3G网络的平均抖动,平均延迟,能耗,平均队列长度,带错误的信号接收,发送和接收的总单播数据,单播接收吞吐量。
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引用次数: 0
Analytical modeling and comparison of Triple gate MOSFET with Double gate MOSFET 三栅MOSFET与双栅MOSFET的分析建模与比较
S. P. Pandey, R. Kushwah, Shyam Babu Singh, S. Akashe
In this paper, we bring in the incomparable features of modification in symmetrical Triple-gate (TG) MOSFET. The modified structure of Triple gate (TG) MOSFET reduces short-channel effects (SCEs) in comparison of the Double-gate (DG) MOSFET model. The threshold voltage, the drain-induced barrier lowering (DIBL) and surface potential are calculated. We will also discuss a model for the trans-conductance, drain current and drain conductance. The proposed Triple-gate (TG) structure province increase in the trans-conductance and drain current and reduces the short-channel effects (SCEs), electric field and drain conductance and in comparison of the Double-gate (DG) MOSFET.
在本文中,我们引入了对称三栅(TG) MOSFET的不可比拟的修改特性。与双栅(DG) MOSFET模型相比,改进的三栅(TG) MOSFET结构减少了短沟道效应(SCEs)。计算了阈值电压、漏极势垒降低(DIBL)和表面电位。我们还将讨论跨导、漏极电流和漏极电导的模型。与双栅极(DG) MOSFET相比,所提出的三栅极(TG)结构增加了跨导和漏极电流,减小了短通道效应(SCEs)、电场和漏极电导。
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引用次数: 7
Improving AOMDV protocol for black hole detection in Mobile Ad hoc Network 改进的AOMDV协议在移动自组网中的黑洞探测
J. Rani, Naresh Kumar
Routing attacks have been identified for single path routing in wireless ad hoc networks. The effects of routing attacks on multipath routing have not been addressed so far. In this paper, an approach have been proposed to mitigate the black hole attack using AOMDV (Ad hoc on Demand Multipath Distance Vector) routing protocol. Some improvements have been made in AOMDV protocol. These improvements make the protocol robust against black hole attack along multipath route discovery process. The performance of proposed approach have been investigated to further reduce the overhead as described in this paper.
无线自组织网络中的单路径路由攻击已经被识别出来。路由攻击对多路径路由的影响到目前为止还没有得到解决。本文提出了一种利用AOMDV (Ad hoc on Demand Multipath Distance Vector)路由协议缓解黑洞攻击的方法。对AOMDV协议做了一些改进。这些改进使协议在多径路由发现过程中对黑洞攻击具有鲁棒性。为了进一步降低开销,本文对所提方法的性能进行了研究。
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引用次数: 14
期刊
2013 International Conference on Control, Computing, Communication and Materials (ICCCCM)
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