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FPGA based approach for signature based antivirus applications 基于FPGA的基于签名的防病毒应用
Pub Date : 2011-02-25 DOI: 10.1145/1980022.1980300
Nitesh B. Guinde, R. Lohani
The detection of malicious files is an important component of any intrusion detection system. Due to increase in network speeds and new worms being discovered frequently, there arises a need to detect worms on the fly without disassembling or running them. Signature-based detection is considered to be an important technique in anti-virus applications because of its accuracy and lack of false positives. by checking the signatures stored in the database. As the database of signatures increase, the time required to perform the pattern matching operation in software increases. FPGAs(Field Programmable Gate Arrays) present us with ideal platforms for these kinds of pattern matching applications since they are characterized by low cost and short application development cycles. They also provide a right compromise between flexibility of re-programming and capability in operating at high speeds. In this paper we present a design where FPGA is used as a co-processor to help out with signature matching. They can also be extended to perform inline matching where the packets can be inspected for protocol analysis.
恶意文件的检测是入侵检测系统的重要组成部分。由于网络速度的提高和新蠕虫的频繁发现,需要在不拆卸或运行蠕虫的情况下动态检测蠕虫。基于签名的检测由于其准确性和低误报性而被认为是反病毒应用中的一项重要技术。通过检查数据库中存储的签名。随着签名库的增加,软件执行模式匹配操作所需的时间也在增加。fpga(现场可编程门阵列)为这些类型的模式匹配应用提供了理想的平台,因为它们具有低成本和短应用开发周期的特点。它们还在重新编程的灵活性和高速运行的能力之间提供了一个正确的折衷。在本文中,我们提出了一种使用FPGA作为协处理器来帮助签名匹配的设计。它们还可以扩展为执行内联匹配,其中可以检查数据包以进行协议分析。
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引用次数: 6
Marker gene selection for sample classification using a new MST based clustering algorithm 基于MST聚类算法的标记基因选择样本分类
Pub Date : 2011-02-25 DOI: 10.1145/1980022.1980357
S. Sarkar
In microarray gene expression data, monitor gene in different tissues & where each experiment with additional response variable such as a cancer type. Although the number of measure genes is in the thousand, it is assume that only law marker components of gene subset determine the type of a tissue. This paper proposes a new clustering method based on Minimal Spanning Tree for finding such groups of genes. By applying the proposed algorithm to gene expression data, meaning full clusters of gene are discovered. Significant genes are the subtend from each cluster & they contain useful information for sample classification. Thus a small pool of subtend genes can be used to build classification with high classification rode. The performance of this method is presented based on the predictive accuracy of K-NN rule, on colon cancer & leukemia data set.
在微阵列基因表达数据中,监测不同组织中的基因,每个实验都有额外的反应变量,如癌症类型。虽然测量基因的数量是千个,但假设只有基因子集的规律标记成分决定组织的类型。本文提出了一种基于最小生成树的聚类方法来寻找这类基因群。将该算法应用于基因表达数据,发现有意义的完整基因簇。重要基因是每个簇的从属基因&它们包含样本分类的有用信息。因此,可以利用少量的同源基因构建具有高分类率的分类。基于K-NN规则在结肠癌和白血病数据集上的预测精度,给出了该方法的性能。
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引用次数: 0
A generic filter driver for file classification in Linux Linux中用于文件分类的通用过滤器驱动程序
Pub Date : 2011-02-25 DOI: 10.1145/1980022.1980344
Pravin Dilp, Ajit Ambeka, P. Chawan
Whenever, user has to deal with lots of files present in the system, managing and storing these files systematically is very important in order to make it easier to access them. Here comes the role of our FS Filter Driver which helps user to classify these files and check the intrusions in these files and store them in separate directories according to their file extensions. It also classifies the files which are downloaded from the Internet. Thus Driver eases the programmer's job of handling a lot of files by classifying them systematically.
每当用户需要处理系统中存在的大量文件时,系统地管理和存储这些文件是非常重要的,以便于用户更容易地访问它们。这里是我们的FS过滤器驱动程序的作用,它帮助用户对这些文件进行分类,检查这些文件中的入侵,并根据文件扩展名将它们存储在单独的目录中。它还对从互联网下载的文件进行分类。因此,Driver通过系统地对文件进行分类,简化了程序员处理大量文件的工作。
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引用次数: 0
R-R interval based paroxysmal atrial fibrillation analysis 基于R-R间期的阵发性心房颤动分析
Pub Date : 2011-02-25 DOI: 10.1145/1980022.1980306
S. Kadge, M. Panse
Detection and classification of Atrial complexes from the ECG is of considerable importance in critical patient care monitoring of dangerous heart conditions. Accurate detection of Paroxysmal Atrial Fibrillation (PAF) using Atrial Premature Complexes(APC) is particularily important in relation to life threatening arrhythmias. PAF is a type of progressive cardiac arrhythmia that poses severe health risks, sometimes leading to ventricular arrhythmia. The electrocardiogram (ECG) data from the PhysioNet Online Database is used to develop a technique to screen, detect, and predict the onset of PAF. By considering a set of feature derived from RR intervals and P wave morphology it is possible to discriminate between PAF patients and healthy individuals. Result demonstrated that feature based on RR intervals is most successful. The RR based algorithm could be incorporated into medical devices with the potential of contributing to new healthcare technology.
心房复合体的检测和分类从心电图是相当重要的危重病人监护监测危险的心脏条件。使用心房早衰复合体(APC)准确检测阵发性心房颤动(PAF)对危及生命的心律失常尤为重要。PAF是一种进行性心律失常,具有严重的健康风险,有时可导致室性心律失常。来自PhysioNet在线数据库的心电图(ECG)数据用于开发一种筛选、检测和预测PAF发病的技术。通过考虑由RR间隔和P波形态学衍生的一组特征,可以区分PAF患者和健康个体。结果表明,基于RR区间的特征是最成功的。基于RR的算法可以整合到医疗设备中,有可能为新的医疗保健技术做出贡献。
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引用次数: 0
An accurate circuit idea for pre-paid electricity for portable devices 为便携式设备预付费供电的精确电路设计
Pub Date : 2011-02-25 DOI: 10.1145/1980022.1980297
K. Salam, J. Sathyan, S. James, S. Sreejith, M. P. Suhair
In this paper, we describe a circuit idea and implementation algorithm of a device useful to common people during travelling. This device provides the power to user by inserting a one rupee coin. It consists of a coin detector, microcontroller and out driver relay. When a coin is inserted, power can be drawn from the plug point for a predefined duration. This devise is useful for charging all portable electronic devices and e-vehicles.
本文介绍了一种适用于普通百姓出行的装置的电路思想和实现算法。该装置通过插入一枚一卢比的硬币为用户提供电力。它由硬币检测器、微控制器和输出驱动继电器组成。当一枚硬币被插入时,电源可以在预定的持续时间内从插头点取出。该装置适用于所有便携式电子设备和电动汽车的充电。
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引用次数: 0
Resource management in cellular communication using particle swarm optimization 基于粒子群优化的蜂窝通信资源管理
Pub Date : 2011-02-25 DOI: 10.1145/1980022.1980105
G. Mundada, B. Chaudhari, P. Lohiya
Power and Bandwidth are scarce resources in cellular communication. The limited radio spectrum is becoming scarcer with an increasing growth in cellular users and the new services offered by the advancement in cellular communication. Optimum utilization of limited bandwidth; in cellular communication is an important research topic, in which the main challenge lies in allocating a channel to the new caller in the system. Channel allocation problem is known to be NP hard. Various channel allocation schemes are available, out of which Dynamic Channel Allocation using Particle Swarm Optimization technique is implemented in this paper. The velocity update function is modified by introducing dynamically varying inertia and its effects are studied. This efficient allocation scheme will help in improving the efficiency of the system, by allocating the channels to the newly arrived call at a faster rate. The simulation is performed on well known bench mark problem. The results of which show that, we obtain the optimum solution at a faster rate and low values of call rejected ratio.
功率和带宽是蜂窝通信中的稀缺资源。随着蜂窝用户的不断增长和蜂窝通信技术的进步所提供的新业务,有限的无线电频谱正变得越来越稀缺。有限带宽的最佳利用;在蜂窝通信中,信道分配是一个重要的研究课题,其主要挑战在于如何为系统中的新呼叫者分配信道。信道分配问题是一个NP困难问题。信道分配方案有很多种,其中本文采用粒子群优化技术实现了动态信道分配。通过引入动态变化惯量对速度更新函数进行了修正,并研究了其影响。这种有效的分配方案将有助于提高系统的效率,以更快的速度将通道分配给新到达的呼叫。在众所周知的基准问题上进行了仿真。结果表明,该方法能以较快的速度和较低的拒绝率得到最优解。
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引用次数: 0
Improvement to libor masek algorithm of template matching method for iris recognition 虹膜识别模板匹配方法中libor mask算法的改进
Pub Date : 2011-02-25 DOI: 10.1145/1980022.1980303
S. B. Kulkarni, R. Hegadi, U. Kulkarni
Iris recognition has become a popular research in recent years due to its reliability and nearly perfect recognition rates. Iris recognition system has three main stages: Image preprocessing, Feature extraction and Template matching. In the preprocessing stage, iris segmentation is critical to the success of subsequent feature extraction and template matching stages. Most recent algorithm on template matching proposed by Libor Masek shows an improvement of 3.6 % over existing algorithm like Hamming Distance. This paper addresses for improvement to Libor Masek algorithm of Template matching method for Iris Recognition. The method evaluates on iris images taken from the CASIA iris image database version 1.0 and version 3. Experimental results show that the proposed approach has more efficient than to Libor Masek in terms of Template matching Time of about 99%, Creation of template is of about 10 % and False Rejection Ratio (FRR) is of about 10 %.
虹膜识别以其可靠性和近乎完美的识别率成为近年来研究的热点。虹膜识别系统主要分为三个阶段:图像预处理、特征提取和模板匹配。在预处理阶段,虹膜分割对后续特征提取和模板匹配阶段的成功与否至关重要。Libor Masek最近提出的模板匹配算法比现有的算法(如Hamming Distance)提高了3.6%。本文对虹膜识别模板匹配方法中的Libor Masek算法进行了改进。该方法对从CASIA虹膜图像数据库版本1.0和版本3中获取的虹膜图像进行评估。实验结果表明,该方法的模板匹配时间约为99%,模板生成率约为10%,误拒率(FRR)约为10%,优于Libor Masek方法。
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引用次数: 7
Ubiquitous information management system 泛在信息管理系统
Pub Date : 2011-02-25 DOI: 10.1145/1980022.1980144
M. Bhelotkar, U. Pawar
The emergence of mobile computing provides the ability to access information at any time and place. Ubiquitous data access is the base of mobile computing and connectivity. Organizing and accessing massive amount of data on wireless communication networks in order to provide fast and low power access to users equipped with wireless devices is a new challenge to the data management and telecommunication communities. This paper provides a brief introduction to mobile database architecture, and enlist important issues related to management of data on move which could be available everywhere. The use of wireless communication makes the data availability the most important problem here especially for location dependent data. It further states the problem associated with Location dependent data in caching, cache invalidation and cache replacement.
移动计算的出现提供了在任何时间和地点访问信息的能力。无处不在的数据访问是移动计算和连接的基础。如何对无线通信网络上的海量数据进行组织和访问,以便为配备无线设备的用户提供快速、低功耗的访问,是数据管理和电信界面临的新挑战。本文简要介绍了移动数据库体系结构,并列举了与移动数据管理相关的重要问题。无线通信的使用使得数据的可用性成为这里最重要的问题,特别是对于位置相关的数据。它进一步说明了缓存中与位置相关的数据、缓存无效和缓存替换相关的问题。
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引用次数: 0
Comparing the performance of TCP and CBR in tree-based and mesh-based ad-hoc multicast routing protocol 比较基于树和基于网格的ad-hoc组播路由协议中TCP和CBR的性能
Pub Date : 2011-02-25 DOI: 10.1145/1980022.1980201
V. V. Mandhare, P. Vikhe, N. S. Nehe
This paper, evaluates the performance of two ad-hoc multicast routing protocols under varying traffic, density and mobility conditions. We observe that a large fraction of the traffic is being carried on the Internet today by TCP. Thus internet traffic has inherently different characteristics than CBR traffic, which is commonly used traffic type for evaluating MANET routing protocols performance. Previous efforts to evaluate performance of TCP and CBR in tree-based multicast routing protocol (MAODV) are done. But these tree based protocols face lot of problem like single path property, vulnerable to high mobility and large group, single point of failure which are removed in mesh-based multicast routing protocol like ODMRP, ADMR etc. It is observe that mesh based protocol are robust enough and performance of CBR is more in mesh based protocol as compare to TCP.
本文对两种ad-hoc组播路由协议在不同流量、密度和可移动性条件下的性能进行了评估。我们观察到,今天有很大一部分流量是通过TCP在互联网上传输的。因此,互联网流量与CBR流量具有固有的不同特征,CBR是评估MANET路由协议性能的常用流量类型。以往对基于树的组播路由协议(MAODV)中TCP和CBR性能的评估工作已经完成。但是这些基于树的路由协议面临着单一路径、易受高移动性和大组、单点故障等问题,而这些问题在基于网格的组播路由协议如ODMRP、ADMR等中得到了克服。结果表明,基于网格的协议具有足够的鲁棒性,并且与TCP相比,基于网格的协议的CBR性能更高。
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引用次数: 0
Receiver based capacity enhancement with cross-layer design approach for IEEE 802.11 ad-hoc networks 基于接收机的IEEE 802.11 ad-hoc网络跨层容量增强设计方法
Pub Date : 2011-02-25 DOI: 10.1145/1980022.1980197
Satish Y. Ket, R. Awale
The performance of IEEE 802.11 with different network densities and protocol configurations is of interest, particularly in distributed coordination function (DCF) mode. A mathematical model for one hop network IEEE 802.11 protocol was introduced by Bianchi [2] to analytically derive the saturated throughput. Our ultimate goal is to enhance the capacity of Ad-hoc network closer to the analytical values of this model. As an attempt, we propose the Receiver Based Capacity Enhancement Algorithm using Cross-Layer Design Approach (RCECLD) by dynamically adapting the data rate. It uses Signal-to-Noise Ratio (SNR) values calculated by Physical layer and exported to Medium Access Control (MAC) layer via the cross-layer interface to estimate the prevailing channel state. In RCECLD the receiver decides the transmission data rate by calculating the SNR value of received RTS (Ready-to-Send), which is in turn an estimate of the prevailing channel state, and piggybacking it through CTS (Clear-to-Send) to the transmitter. Accordingly transmitter transmits the data frame with adopted data rate. The capacity of the Ad-hoc network is enhanced with RCECLD. It is investigated through an extensive set of simulations. The results indicate that the enhancement is very close to analytical values for smaller network size and it is about 2.5 times more than Auto-Rate Fallback (ARF) [8], in spite of fading and mobility effects.
IEEE 802.11在不同网络密度和协议配置下的性能值得关注,特别是在分布式协调功能(DCF)模式下。Bianchi[2]引入了一跳网络IEEE 802.11协议的数学模型来解析推导饱和吞吐量。我们的最终目标是使Ad-hoc网络的容量更接近该模型的分析值。作为一种尝试,我们提出了基于接收机的容量增强算法,采用跨层设计方法(RCECLD),通过动态调整数据速率。它利用物理层计算出的信噪比(SNR)值,通过跨层接口输出到介质访问控制(MAC)层来估计当前信道的状态。在RCECLD中,接收器通过计算接收到的RTS (Ready-to-Send)的信噪比值来决定传输数据速率,这是对当前信道状态的估计,并通过CTS (Clear-to-Send)将其承载给发送器。相应地,发送器以所采用的数据速率发送数据帧。RCECLD增强了Ad-hoc网络的容量。它是通过一套广泛的模拟研究。结果表明,在较小的网络规模下,增强效果非常接近分析值,尽管存在衰落和迁移效应,但增强效果约为自动速率回退(ARF)的2.5倍[8]。
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引用次数: 2
期刊
International Conference & Workshop on Emerging Trends in Technology
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