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2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies最新文献

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Analysis of segmentation scheme for diseased rice leaves 水稻病叶分割方案分析
D. Devi, K. Muthukannan
For any automated image analysis process, the segmentation is an important task because all subsequent tasks in image processing heavily rely on the quality of image segmentation. It determines the eventual success or failure of the analysis. The problem in image segmentation occurs when an image has a varying gray level background. There are several algorithms and methods are available for image segmentation, but there is a need to develop a unique method for it. In this paper, some of the image segmentation algorithms are compared to segment the diseased portion of rice leaves.
对于任何自动化图像分析过程来说,图像分割都是一项重要的任务,因为图像处理中的所有后续任务都严重依赖于图像分割的质量。它决定了分析的最终成功或失败。当图像具有不同的灰度级背景时,就会出现图像分割问题。图像分割有多种算法和方法,但需要开发一种独特的方法。本文比较了几种图像分割算法,对水稻叶片的病变部分进行了分割。
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引用次数: 12
Implementing a partial group based routing for homogeneous fat tree network on chip architecture 在芯片结构上实现同质胖树网络的部分分组路由
Abhijit Biswas, H. J. Mahanta, M. Hussain
As the growing consumer electronic market imposes constraint such as compact product design and strict time to market, the traditional method of chip designing failed miserably to satisfy these constraints. With the evolution of Network-on-Chip, researchers have made an honest effort to resolve such issues but designing a network which encourages reusability of components and also scalable still remains an area where more refinement is necessary. In this paper we present before you a fat tree based network on chip. The entire design of the network with the nodes and switches has been described in details. The proposed architecture has been implemented and analyzed in a C++ based simulator. The analysis results have been presented at the end of the paper.
随着消费电子市场的不断发展,对产品设计的紧凑型和产品上市时间的要求越来越严格,传统的芯片设计方法已经无法满足这些要求。随着片上网络的发展,研究人员已经做出了诚实的努力来解决这些问题,但设计一个鼓励组件可重用性和可扩展的网络仍然是一个需要更多改进的领域。本文提出了一种基于胖树的芯片网络。详细描述了节点和交换机网络的整体设计。所提出的体系结构已在一个基于c++的模拟器上实现并进行了分析。本文最后给出了分析结果。
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引用次数: 7
Moving object detection in dynamic backgrounds for surveillance systems 动态背景下监控系统的运动目标检测
Wasim Hossain, M. Das
Object detection from a moving image sequence is one of the most challenging research area. Detection of moving objects in a video sequence is the fundamental step but a critical task in information extraction for computer vision applications. The main idea in our paper is to detect the moving objects area smoothly. This paper presents a real time approach to determine objects in the dynamic surveillance systems. It is mainly based on frame difference model and background subtraction model; choose one of the approaches according to the surrounding environment and take the advantages of both FDM and BSM. With this model, a scene containing temporal stationary objects, motionless objects, objects having similar chromatic value of background, illumination change effectively in a surveillance application; can detected smoothly the area of the objects. After determining the moving object area, it is eliminates the noise and finally produce the moving objects area. The experimental results show that our proposed approach can detect the moving objects from video sequence robustly and successfully.
从运动图像序列中检测目标是最具挑战性的研究领域之一。视频序列中运动目标的检测是计算机视觉信息提取的基础步骤,也是关键任务。本文的主要思想是平滑地检测运动目标区域。本文提出了一种动态监控系统中实时确定目标的方法。它主要基于帧差模型和背景相减模型;根据周围环境选择一种方法,充分利用FDM和BSM的优点。利用该模型,可以有效地实现包含时间静止物体、不动物体、具有相似背景色值的物体、光照变化的场景监控应用;可以平滑地检测物体的区域。确定运动目标区域后,消除噪声,最终得到运动目标区域。实验结果表明,该方法可以鲁棒地检测出视频序列中的运动目标。
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引用次数: 5
Performance evaluation of online mobile application using Test My App 使用Test My App对在线移动应用程序进行性能评估
V. S. Sundara Rajan, A. Malini, K. Sundarakantham
Mobile application is application software intended to be deployed and used on any portable devices. Online mobile applications are widely used in many critical areas such as online shopping, ticket booking, E-commerce, etc. The quality of these applications depends upon network related factors that may affect the normal working of the application under poor performance. So there is a need to test online mobile application but the existing method does not provide a better performance result based on the network and device factors. In this paper, a testing framework the “Test My APP” is proposed to test online mobile applications. The proposed testing framework measures the response time under various device and network conditions. The obtained results are then processed using the chi-square based performance evaluation method to provide accurate performance measure.
移动应用程序是旨在部署和使用在任何便携式设备上的应用软件。在线移动应用程序广泛应用于许多关键领域,如网上购物、机票预订、电子商务等。这些应用程序的质量取决于与网络相关的因素,这些因素在性能较差的情况下可能会影响应用程序的正常工作。因此,有必要对在线移动应用程序进行测试,但现有的方法并没有提供更好的基于网络和设备因素的性能结果。本文提出了一个测试框架“Test My APP”来测试在线移动应用。提出的测试框架测量在各种设备和网络条件下的响应时间。然后使用基于卡方的性能评价方法对所得结果进行处理,以提供准确的性能度量。
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引用次数: 6
Low power pulse triggered D-flip flops using MTCMOS and Self-controllable voltage level circuit 采用MTCMOS和自控电压电平电路的低功率脉冲触发d型触发器
Liaqat Moideen Parakundil, N. Saraswathi
Reducing power consumption is a crucial task for any circuits. Increased demand for portable devices with reduced power dissipation has put necessary traction to design low power circuits. Both explicit and implicit pulse triggered flip flops are designed. Multiple Threshold CMOS (MTCMOS) technique and Self-controllable voltage level (SVL) circuit are employed to reduce power consumption. All the circuits are designed in 45nm technology for 1 GHz frequency.
降低功耗是任何电路的关键任务。对低功耗便携式设备需求的增加为设计低功耗电路提供了必要的动力。设计了显式和隐式脉冲触发触发器。采用多阈值CMOS (MTCMOS)技术和自可控电压电平(SVL)电路降低功耗。所有电路均采用45纳米技术设计,频率为1 GHz。
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引用次数: 2
Threshold based similarity clustering of medical data 基于阈值的医疗数据相似性聚类
Sweta C. Morajkar, J. Laxminarayana
Due to increase in number of technologies, a large amount of data gets accumulated. The need arises to handle this data for retrieving and analyzing useful information. Clustering of temporal data has been explored using evolutionary clustering. However the time dimension associated with the record has not been considered. Traditional clustering algorithms usually focus on grouping data objects based on similarity function. Temporal data clustering extends traditional clustering mechanisms and provides underpinning solutions for discovering the evolving information over the period of time. This paper proposes a methodology for clustering medical observations of patients based on a new similarity measure. We show how to accelerate the clustering algorithm by avoiding unnecessary distance calculations by applying such similarity measure.
由于技术的增多,积累了大量的数据。需要处理这些数据以检索和分析有用的信息。时间数据的聚类已经使用进化聚类进行了探索。但是,没有考虑与记录相关的时间维度。传统的聚类算法通常侧重于基于相似函数对数据对象进行分组。时态数据聚类扩展了传统的聚类机制,并为发现一段时间内不断变化的信息提供了基础解决方案。本文提出了一种基于新的相似度度量的患者医学观察聚类方法。我们展示了如何通过应用这种相似性度量来避免不必要的距离计算来加速聚类算法。
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引用次数: 2
Compact reconfigurable Ultra Wide band antenna design for wireless communication 紧凑可重构的超宽带天线设计,用于无线通信
A. Jazeel, M. Susila
This paper propose a novel design for multiband reconfigurable Ultra Wideband (UWB) antenna which can be used for spectrum sensing in cognitive wireless applications. The compact reconfigurable UWB antenna (CRUWBA) proposed is having an excellent matched structure. The radiating patch of the CRUWBA consists of seven regular hexagons united with a circular ring. The CRUWBA is operational in nearly the entire UWB spectrum spanning from 3.1 GHz to 10.6 GHz, and achieves a gain up to 5.8 dB. Within the UWB spectrum, the antenna is capable of operating in five different bands. The operational bands are: band 1 [3-4.3GHz, 5-9 GHz], band 2 [3-3.5GHz, 4.9-6.2 GHz, 7.2-8.9 GHz], band 3 [3-3.8 GHz, 6.7-8.6 GHz], band 4 [3.9-6.1 GHz, 7.4-8.9 GHz] and band 5 [3-4.2 GHz, 4.8-5.7GHz, 6.3-8.4 GHz]. The CRUWBA achieves reconfigurability by employing three switches, and hence have eight switching cases. By analyzing the results, the antenna proves to be satisfying the performance criteria. All the simulations were carried out in Ansoft High Frequency structure simulator (HFSS).
提出了一种多波段可重构超宽带(UWB)天线的设计方案,该天线可用于认知无线应用中的频谱感知。提出的紧凑型可重构超宽带天线(CRUWBA)具有良好的匹配结构。CRUWBA的辐射片由七个正六边形和一个圆形环组成。CRUWBA几乎可以在3.1 GHz到10.6 GHz的整个UWB频谱中运行,增益高达5.8 dB。在超宽带频谱内,天线能够在五个不同的频段工作。工作频带为:频带1 [3-4.3GHz, 5-9 GHz],频带2 [3-3.5GHz, 4.9-6.2 GHz, 7.2-8.9 GHz],频带3 [3-3.8 GHz, 6.7-8.6 GHz],频带4 [3.9-6.1 GHz, 7.4-8.9 GHz]和频带5 [3-4.2 GHz, 4.8-5.7GHz, 6.3-8.4 GHz]。CRUWBA通过使用3个交换机实现可重构性,因此有8个交换用例。分析结果表明,该天线满足性能要求。所有仿真均在Ansoft高频结构模拟器(HFSS)中进行。
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引用次数: 4
MOSFET sub-threshold current reduction by varying substrate doping 通过改变衬底掺杂降低MOSFET亚阈值电流
Gaurav Gupta, R. Mehra
This paper presents a technique to reduce the sub-threshold current in MOSFET by changing the doping profile in the substrate region near the channel. Sub-threshold current is also known as drain leakage current. The size of MOSFET can be reduced but at the cost of increase in leakage of current from drain to source in its stand by mode. This leakage current dissipates power even if the device is not in use. To avoid this problem leakage must be reduced so that the advantage of reduced size may be tapped more efficiently. The results have been observed using 180nm, 90nm, 45nm, 32nm MOSFET technology. The simulated results clearly show that there is a considerably large reduction in sub-threshold current with a change in acceptor doping concentration from 2.50e + 17 cm-3 to 5.00e + 18 cm-3 to of the channel region in the substrate.
本文提出了一种通过改变沟道附近衬底区域的掺杂分布来降低MOSFET亚阈值电流的方法。亚阈值电流也称为漏极漏电流。可以减小MOSFET的尺寸,但代价是在其待机模式下从漏极到源极的电流泄漏增加。即使设备不使用,泄漏电流也会耗散电源。为了避免这个问题,必须减少泄漏,以便更有效地利用缩小尺寸的优势。采用180nm、90nm、45nm、32nm的MOSFET技术观察结果。模拟结果清楚地表明,当衬底沟道区的受体掺杂浓度从2.50e + 17 cm-3增加到5.00e + 18 cm-3时,亚阈值电流有相当大的降低。
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引用次数: 2
Design of CMOS based reconfigurable LNA at millimeter wave frequency using active load 基于CMOS的毫米波频率可重构LNA主动负载设计
Bindhiya Vinod, K. Balamurugan, Jayakumar M
Due to increased commercial and scientific applications in millimeter wave (mm wave) band, the development of mm wave transceivers is considered as prominent phase in RFIC design cycle. This paper proposes the design of reconfigurable low noise amplifier (LNA) working at 60 GHz using active load transistor. A single stage source degenerated LNA has been designed to achieve a gain of 8.38 dB and noise figure (NF) of 2.92 dB. The frequency of operation is tuned from 57 to 64 GHz i.e. at millimeter wave. Variation in gain and noise figure are achieved through the design of active load using NMOS transistor. This active load works as reconfiguration network which is subjected to proper bias voltage that yields the highest gain of 8.41 dB and the lower possible gain of 6.9 dB. Similarly the results of NF reaching 2.92 dB as minimum value and on the other end reaching 3.3 dB are observed and presented. That is, reconfigurable performance parameters are gain and NF whose variability is observed to be 17.66 % and 13% respectively. Proper bias voltage is extracted using DC characteristics of load transistor and their results are presented. Design parameter of LNA at millimeter wave frequencies, consideration of noise sources and its equivalent noise voltages, device modeling considering the parasitic effect and choice of LNA configuration have also been discussed.
由于毫米波(mm wave)波段的商业和科学应用的增加,毫米波收发器的开发被认为是RFIC设计周期中的重要阶段。提出了一种基于有源负载晶体管的工作频率为60 GHz的可重构低噪声放大器的设计方法。设计的单级源退化LNA增益为8.38 dB,噪声系数(NF)为2.92 dB。工作频率从57 GHz调谐到64 GHz,即毫米波。利用NMOS晶体管设计有源负载,实现了增益和噪声系数的变化。该主动负载作为重新配置网络工作,该网络受到适当的偏置电压,产生最高增益8.41 dB和较低增益6.9 dB。同样,我们也观察到最小值为2.92 dB,另一端为3.3 dB的结果。即,可重构的性能参数为增益和NF,其可变性分别为17.66%和13%。利用负载晶体管的直流特性提取了适当的偏置电压,并给出了结果。本文还讨论了毫米波频率下LNA的设计参数、噪声源及其等效噪声电压的考虑、考虑寄生效应的器件建模以及LNA结构的选择。
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引用次数: 10
An enhanced method for detecting congestive heart failure - Automatic Classifier 一种改进的充血性心力衰竭检测方法——自动分类器
L. Gladence, T. Ravi, M. Karthi
A number of studies demonstrated the relationship of HRV (Heart Rate Variability) measures. Over the past years, automatic classifier, based on several clinical & instrumental parameters have been proposed to support CHF assessment. Considering only the low level features will not fulfill the classification needs. In order to avoid the gap between low level i.e general causes for CHF & high level features i.e attribute retrieved from long term HRV & make a decision correctly proposed a classifier to individuate severity of CHF. The proposed classifier separates lower risk patients from higher risk ones, using standard long-term heart rate variability (HRV) measures. The method we used to develop the Automatic Classifier is Bayesian belief network Classifier. The Bayesian Belief Network Classifier has been used in several applications especially for medical diagnosis. The Bayesian Belief Network algorithm iteratively splits the dataset, according to a criterion that maximizes the separation of the data which will produce a tree-like decision.
许多研究证明了HRV(心率变异性)测量之间的关系。在过去的几年中,基于几个临床和仪器参数的自动分类器已被提出用于支持CHF评估。只考虑低级特征是不能满足分类需要的。为了避免低级特征(即CHF的一般原因)与高级特征(即从长期HRV中检索到的属性)之间的差距,并正确地做出决策,提出了一种分类器来区分CHF的严重程度。该分类器使用标准的长期心率变异性(HRV)指标将低风险患者与高风险患者区分开来。我们开发自动分类器的方法是贝叶斯信念网络分类器。贝叶斯信念网络分类器在医学诊断方面得到了广泛的应用。贝叶斯信念网络算法迭代分割数据集,根据一个标准,最大限度地分离数据,将产生一个树状决策。
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引用次数: 12
期刊
2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies
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