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2008 First International Conference on Emerging Trends in Engineering and Technology最新文献

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High Performance Computational Grids Fault Tolerance at System Level 系统级的高性能计算网格容错
M. Mujumdar, Meenakshi Bheevgade, L. Malik, R. Patrikar
Many complex scientific, mathematical applications require large time for completion. To deal with this issue, parallelization is popularly used. Distributing an application onto several machines is one of the key aspects of grid-computing. This paper focuses on a check point/restart mechanism used to overcome the problem of job suspension at a failed node in a computational Grid. The ability to checkpoint a running application and restart it later can provide many useful benefits including fault recovery by rolling back an application to a previous checkpoint, advanced resources sharing, better application response time by restarting applications from checkpoints instead of from scratch, and improved system utilization, efficient high performance computing and improved service availability.
许多复杂的科学、数学应用需要大量的时间来完成。为了解决这个问题,并行化被广泛使用。将应用程序分发到几台机器上是网格计算的关键方面之一。本文研究了一种检查点/重启机制,用于解决计算网格中失效节点上的作业挂起问题。检查点正在运行的应用程序并在稍后重新启动它的能力可以提供许多有用的好处,包括通过将应用程序回滚到以前的检查点进行故障恢复、高级资源共享、通过从检查点重新启动应用程序而不是从头开始重新启动应用程序来缩短应用程序响应时间,以及改进的系统利用率、高效的高性能计算和改进的服务可用性。
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引用次数: 2
New Technique for Fault Detection in Quantum Cellular Automata 量子元胞自动机故障检测新技术
Binu K. Mathew, Shajimon K. John, C. Pradeep
Quantum cellular automata (QCA) circuits, the new generation nanotechnology with wide attention in recent years. In this we are proposing a framework based on QCA for finding out the stuck-at fault of a circuit. The existing technologies and methods are not guaranteed to detect the stuck-at faults. This work is motivated by the fact that the stuck-at fault test set of a circuit is not guaranteed to detect all defects that can occur in its QCA implementation.
量子元胞自动机(QCA)电路是近年来受到广泛关注的新一代纳米技术。本文提出了一种基于QCA的电路卡死故障检测框架。现有的技术和方法不能保证检测出卡滞故障。这项工作的动机是电路的卡在故障测试集不能保证检测到在其QCA实现中可能发生的所有缺陷。
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引用次数: 6
Stress Intensity Factors for Cracks Emanating from a Circular Hole in Laminated Composite Infinite Plate Under Different Loading Conditions 不同加载条件下复合材料层合无限板圆孔裂纹的应力强度因子
D. Sharma, V. G. Ukadgaonker
General solutions for determining the stress intensity factors, for cracks emanating from circular hole in laminated composite infinite plate subjected to arbitrary loading, with layers of arbitrary fiber orientations and stacking sequence, are obtained using Muskhelishvilipsilas complex variable method. The stress functions are obtained by evaluating Schwarzpsilas integral for the given boundary conditions. The generalized formulation thus obtained is coded and numerical results are obtained using MATLAB 6.5. The effect of crack orientation, loading pattern and fiber orientation is studied for orthotropic and isotropic plates. For some of the cases half crack plane stress model are prepared in ANSYS and results are compared with present method.
利用Muskhelishvilipsilas复变方法,得到了任意纤维取向和堆叠顺序的复合材料层合无限板在任意载荷作用下圆形孔裂纹应力强度因子的一般解。在给定边界条件下,通过求Schwarzpsilas积分得到应力函数。利用MATLAB 6.5对所得的广义公式进行了编码,并得到了数值结果。研究了正交各向异性和各向同性板的裂纹取向、加载方式和纤维取向的影响。针对某些情况,在ANSYS中建立了半裂纹面应力模型,并与现有方法进行了比较。
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引用次数: 3
Hand Gesture Recognition System Using Standard Fuzzy C-Means Algorithm for Recognizing Hand Gesture with Angle Variations for Unsupervised Users 基于标准模糊c均值算法的无监督手势识别系统
Sachin K. Korde, K. Jondhale
This paper describes a gesture recognition system in which a hand gesture commands are recognized. A fuzzy C-means clustering method is used to classify hand postures as "gestures". The fuzzy recognition system was tested for both user dependent and user independent gestures vocabulary. Results revealed recognition rate (the ratio of user independent gestures to user dependent gestures) recognition accuracy the percent of he user dependent gestures recognized correctly of 100%. And user independent gestures recognized correctly of 54%. No gestures was recognized incorrectly. Performance times to carry out the pushing task showed rapid learning, reaching standard times within 4 to 6 trials by an inexperienced operator.
本文描述了一种识别手势指令的手势识别系统。使用模糊c均值聚类方法将手势分类为“手势”。对模糊识别系统进行了用户依赖型和用户独立型手势词汇的测试。结果表明,识别率(用户独立手势与用户依赖手势的比值)识别正确率为100%。用户自主手势识别率为54%。没有任何手势被错误识别。执行推推任务的性能时间显示出快速学习,由一个没有经验的操作员在4到6次试验中达到标准时间。
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引用次数: 12
Comparative Analysis of Distributed Group Key Establishment Protocols Based on Subgroup Approach 基于子组方法的分布式组密钥建立协议的比较分析
R. C. Gangwar, A. Sarje
Nowadays, Internet has become the common media of communication. Many group communication applications can easily be conducted on the Internet. Some group communication applications pose strict requirement that in case of network partitions or on each join/leave event, a group key establishment protocol should not execute itself afresh. Although many group key establishment protocols have been proposed in the literature, yet nothing has been done to establish their suitability for aforementioned scenarios. In this paper, we present the succinct description of different decentralized group key establishment protocols based on independent subgroup key approach. And analyze them against parameters such as key independence, one-affects-all, local rekey, data transformation.
如今,互联网已经成为常见的交流媒介。许多群组通信应用可以很容易地在互联网上进行。一些组通信应用程序对网络分区或每次加入/离开事件时,组密钥建立协议不应该重新执行本身提出了严格的要求。尽管文献中已经提出了许多组密钥建立协议,但还没有采取任何措施来确定它们对上述场景的适用性。本文简要描述了基于独立子组密钥方法的各种分散组密钥建立协议。并根据键独立性、单影响全、本地重键、数据转换等参数对它们进行分析。
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引用次数: 0
Using Rule Based Expert System to Wrap Procedural Code of Integrated Watershed Model 基于规则的专家系统对综合流域模型程序代码的包装
Manish Godse, R. Sonar, T. Eldho, E. P. Rao
Graphical user interface (GUI) is an integral part of any software system. It provides communication media between software program and human being. It usually consists of commands, menus, icons, images, graphs, tables, texts etc. The proper GUI presentation is influential in human-computer interaction. The present age commonly used GUIs are windows or web, which has improved usability compared to earlier text based UI. The usual way of GUI development is based on use of GUI builders, which needs understanding, and knowledge of using them. IT professionals more commonly use them. For other professional who are developing algorithms in their own domain may have to spend more time on development of GUI rather than spending more on their domain algorithm work. The novel way of using expert systems for GUI development can reduce a GUI development efforts and time for other domain professionals. In this paper a rule-based expert system is presented for use of GUI development of integrated watershed model (IWM).
图形用户界面(GUI)是任何软件系统的一个组成部分。它提供了软件程序与人之间的沟通媒介。它通常由命令、菜单、图标、图像、图形、表格、文本等组成。正确的GUI表示方式对人机交互具有重要影响。目前常用的gui是windows或web,与早期基于文本的UI相比,它们的可用性得到了提高。通常的GUI开发方式是基于GUI构建器的使用,这需要理解和使用它们的知识。IT专业人员更常使用它们。对于其他在自己的领域开发算法的专业人员来说,可能不得不花更多的时间在GUI的开发上,而不是花更多的时间在他们的领域算法工作上。使用专家系统进行GUI开发的新方法可以减少其他领域专业人员GUI开发的工作量和时间。本文提出了一种基于规则的专家系统,用于集成流域模型的GUI开发。
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引用次数: 1
Improved Enhancement Scheme Using a RBFN Detector for Impulse Noise 基于RBFN检测器的脉冲噪声增强改进方案
Subrajeet Mohapatra, Ratnakar Dash, P. K. Sa, B. Majhi
Since noise smoothing and image enhancement are conflicting objectives in most image processing application, so it has to be dealt properly to preserve the quality of the image. The perceptual appearance of an image may be significantly improved by modifying the high frequency components to have better edge and detail information in the image. A simple method has been proposed to improve the pitfalls of the existing unsharp mask technique which removes impulsive noise while preserving the edges and provides better contrast for visual perception. Comparative analysis on standard images at different noise conditions shows that the proposed scheme, in general, outperforms the existing schemes.
在大多数图像处理应用中,噪声平滑和图像增强是相互冲突的,为了保证图像的质量,必须对噪声平滑和图像增强进行适当的处理。通过修改高频分量使其在图像中具有更好的边缘和细节信息,可以显著改善图像的感知外观。提出了一种简单的方法来改善现有的不锐利掩模技术的缺陷,在保留边缘的同时去除脉冲噪声,为视觉感知提供更好的对比度。对不同噪声条件下的标准图像进行对比分析,结果表明,该方案总体上优于现有方案。
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引用次数: 7
Multirate Digital Signal Processing for Software Defined Radio (SDR) Technology 软件无线电(SDR)技术中的多速率数字信号处理
Gagandeep Kaur, V. Raj
In the past, radio systems were designed to communicate using one or two wave forms. As a result, two groups of people with different types of traditional radio were not able to communicate due to incompatibility. The need to communicate with people using different types of equipment can only be solved by using software defined radio (SDR). SDR is a wireless device that works with any communication system, be it a cellular phone, a pager, a WI-FI transceiver an AM or FM radio, a satellite communications etc. In both hardware and software Digital Signal Processing (DSP) techniques are used to design a real time system. For SDR applications involving high complexity, it becomes impossible to stay with single sampling rate and so altering the sampling rate at different stages is required for low cost DSP hardware. Thus variable sampling rates i.e. Multirate Digital Signal Processing is required.
在过去,无线电系统被设计成使用一种或两种波形进行通信。结果,由于不兼容,两组使用不同类型传统无线电的人无法进行通信。需要与使用不同类型设备的人进行通信只能通过使用软件定义无线电(SDR)来解决。SDR是一种无线设备,可以与任何通信系统一起工作,无论是蜂窝电话,寻呼机,WI-FI收发器,AM或FM收音机,卫星通信等。在硬件和软件上都采用了数字信号处理(DSP)技术来设计实时系统。对于涉及高复杂性的SDR应用,不可能保持单一采样率,因此需要低成本DSP硬件在不同阶段改变采样率。因此,可变采样率即多速率数字信号处理是必需的。
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引用次数: 13
Design of a Scalable, Fault Tolerant, Heterogeneous and Secured Distributed Storage Framework 一种可伸缩、容错、异构和安全的分布式存储框架设计
C.L.J. Jerre Louis, C. Aravindan
In this paper, we present the design of a scalable, fault tolerant, heterogeneous and secured distributed storage framework named SCAVENGER which would aggregate the free storage spaces of the personal computers. The datasets are fragmented and stored with enough replication in different systems. Our design includes a SCAVENGER protocol suite to monitor the joining of new system to the framework, data storage, data retrieval, system failures and network failures. We use multiple managers to make our design scalable. A synchronization protocol is designed to synchronize the data among the multiple managers quickly using the Double Tree Algorithm. We have also designed a fault tolerance model based on the parameters like blackout time, overlap time, latency, trust, load and replication. This is a minimization model which will be a fitness function for Genetic Algorithm to make decision upon the fragment size, the location of storage and the number of replications. Security is provided throughout the SCAVENGER framework by using the cryptographic mechanisms.
本文提出了一种可扩展、容错、异构、安全的分布式存储框架SCAVENGER,用于聚合个人计算机的空闲存储空间。数据集是碎片化的,并以足够的复制存储在不同的系统中。我们的设计包括一个SCAVENGER协议套件,用于监控新系统加入框架、数据存储、数据检索、系统故障和网络故障。我们使用多个管理器使我们的设计可扩展。设计了一种同步协议,利用双树算法实现多个管理器之间的数据快速同步。我们还设计了基于停电时间、重叠时间、延迟、信任、负载和复制等参数的容错模型。这是一个最小化模型,它将成为遗传算法决定片段大小、存储位置和复制次数的适应度函数。通过使用加密机制,在整个SCAVENGER框架中提供安全性。
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引用次数: 2
Environmental Monitoring Using Wireless Sensors: A Simulation Approach 使用无线传感器的环境监测:模拟方法
B. Hardas, G. Asutkar, K. Kulat
Environmental monitoring is an area of significant research in the field of wireless sensor networks. It has the potential to reveal fine-grained, dynamic changes in monitored variables of an outdoor landscape. A network of sensor nodes spread across a field has the capacity to provide temporal and spatial data regarding the properties of the environment. For example, sensor networks could provide precise information about crops with respect to the soil quality and water content, enabling better irrigation schedules, pesticide usage and enhancing environment protection. The current paper presents a snapshot of sensor network, which can be deployed to monitor vital properties like temperature, relative humidity & soil moisture and then report them through a routing tree to a base station for further analysis. The minimum delay scheduling algorithm is discussed & compared with V-blast algorithm. It has been observed that the later one gives the precise results to monitor an environment. The importance of monitoring our physical environment has never been higher. Many groups - from agricultural operators to natural resource developers to biological researchers to homeland security - all need to make reliable, sensitive measurements in remote or dispersed locations. Some of the harshest and most demanding applications are- irrigation management ,harvest timing ,bio-remediation and containment, water quality measurement and control . In this paper, the parameter that we have taken is environmental temperature.
环境监测是无线传感器网络领域的一个重要研究领域。它有可能揭示户外景观监测变量的细粒度动态变化。遍布田野的传感器节点网络具有提供有关环境属性的时间和空间数据的能力。例如,传感器网络可以提供有关作物土壤质量和含水量的精确信息,从而实现更好的灌溉计划、农药使用和加强环境保护。目前的论文展示了一个传感器网络的快照,它可以用来监测温度、相对湿度和土壤湿度等重要属性,然后通过路由树将它们报告给基站进行进一步分析。讨论了最小延迟调度算法,并与V-blast算法进行了比较。据观察,后一种方法给出了监测环境的精确结果。监测我们的自然环境的重要性从未像现在这样高。许多团体——从农业经营者到自然资源开发商,从生物研究人员到国土安全——都需要在偏远或分散的地点进行可靠、敏感的测量。一些最苛刻和最苛刻的应用是-灌溉管理,收获时间,生物修复和遏制,水质测量和控制。本文选取的参数为环境温度。
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引用次数: 14
期刊
2008 First International Conference on Emerging Trends in Engineering and Technology
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