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Fourth International Conference on Advances in Recent Technologies in Communication and Computing (ARTCom2012)

作者： Pooja Wadhwa M.P.S Bhatia Computer Engineering Department Netaji Subhash Institute Of Technology Azad Hind Fauj Marg Sector 3 Dwarka New Delhi India

ISBN: (纸本)9781634396226

The Online Social Networks have become a very popular Web 2.0 application. The powerful combination of methods and techniques makes social networks analysis special. This paper discusses the challenges and opportunities that emerge from this evolution of social networks, and provides structure to better understand the rapidly evolving field of social networks. The paper reviews the current state-of-the-art in the selected aspects of social networks and presents a set of open research challenges related to online social networks. The challenges suggest that significant further research is required in social networks.

关键词： Social Media Social Network Analysis Community Detection Social Networks Social network analysis Social Media Social Capital

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New OTRA-Based Generalized Impedance Simulator

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International Scholarly Research Notices 2013年第1期2013卷

作者： Ashish Gupta Raj Senani D. R. Bhaskar A. K. Singh Department of Electronics and Communication Engineering I.T.S. Engineering College 46 KP-III Greater Noida Uttar Pradesh 201306 Indiaitsecgn.edu.in Division of Electronics and Communication Engineering Netaji Subhas Institute of Technology Sector-3 Dwarka New Delhi 110078 Indiansit.ac.in Department of Electronics and Communication Engineering Faculty of Engineering and Technology Jamia Millia Islamia New Delhi 110025 Indiajmi.ac.in Department of Electronics and Communication Engineering H.R. Group of Institutions Ghaziabad Uttar Pradesh 201003 Indiahrit.ac.in

Operational transresistance amplifier (OTRA) has attracted considerable attention in the recent literature in several applications such as impedance simulation, universal biquad filter realization, realization of sinusoidal oscillators and multivibrators. However, to the best knowledge of the authors, any OTRA-based generalized impedance simulator circuits have not been reported so far. The purpose of this paper is to present such a circuit.

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Inscribed gasket fractal circular monopole antenna for UWB application

Inscribed gasket fractal circular monopole antenna for UWB a...

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International Conference on Emerging technology Trends in Electronics, Communication and Networking (ET2ECN)

作者： Rowdra Ghatak Anirban Karmakar Balaka Biswas D R Poddar Department of ECE National Institute of Technology Durgapur West Bengal India ECE Department Netaji Subhas Engineering College Kolkata West Bengal India ETCE Department Jadavpur University Kolkata West Bengal India

A novel planar ultra wideband (UWB) antenna using a third iteration Sierpinski gasket fractal shape with circular boundary is presented in this paper. Size reduction of the antenna is done by Sierpinski gasket fractal concept which offers 24% thinning and provides excellent bandwidth better than a equivalent circular monopole which is around 8 GHz (span from 3 to 11 GHz with VSWR

关键词： Ultra wideband antennas Fractals Bandwidth Antenna measurements Antenna radiation patterns

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DGW-canny: An improvised version of Canny edge detector

DGW-canny: An improvised version of Canny edge detector

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19th IEEE International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2011

作者： Gupta, Anand Dalal, Ravi Kumar Gupta, Rahul Wadhwa, Pulkit Department of Information Technology Netaji Subhas Institute of Technology New Delhi India Department of Computer Engineering Netaji Subhas Institute of Technology New Delhi India

ISBN: (纸本)9781457721663

Edge detection is a field which has intrigued programmers since early 1970s. Since then, a good number of edge detection techniques have come up but the technique used by Canny [1] is very widely used. However, it has been observed that the results are not that efficient while dealing with alpha-numeric sections or geometrical figures or fine grain region in an image. To mitigate these limitations, we propose an improvised edge detection technique. The technique uses a Laplacian of Gaussian gradient with a new approach towards the thresholding section. The DGW-Canny framework has been experimented on a data set of images categorized on the basis of vectors proposed by us. The encouraging experimental results show that the DGW-Canny edge detector renders much better results compared to those of Canny. We have also performed experiments by varying parameters like nature and man-made component in an image. It is observed that varying the latter parameter adversely affects the edges of the image. © 2011 IEEE.

关键词： Edge detection

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Comparison of Two Security Protocols for Preventing Packet Dropping and Message Tampering Attacks on AODV-Based Mobile Ad Hoc Networks

Comparison of Two Security Protocols for Preventing Packet D...

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institute of Electrical and Electronics Engineers Globecom Workshops

作者： Isaac Woungang Sanjay Kumar Dhurandher Vincent Koo Issa Traore Department of Computer Science Ryerson University Division of Information Technology Netaji Subhas Institute of Technology University of Delhi Department of Computer and Electrical Engineering University of Victoria

ISBN: (纸本)9781467349420

In Emergency MANETs (eMANETs), the broadcasting nature of the wireless medium, the lack of pre-established trust relationship among nodes, and the frequent topology changes, cause some serious security challenges, making the network vulnerable to malicious attacks such as wormhole attacks. This paper investigates a recently proposed Advanced Encryption Standard (AES)-based routing algorithm (so-called AODV-Wormhole Attack Detection Reaction - here referred to as AODV-WADR-AES) for securing AODV-based eMANETs against wormhole attacks. The proposal consists of substituting the AES part of the scheme by the Triple Data Encryption Standard (TDES), yielding the AODV-WADR-TDES routing algorithm, with the goal to study the performance of the algorithm where mobile devices that are incompatible with AES are part of eMANET nodes. In doing so, markers in the form of hash codes are included in the data packets to help consolidating the data integrity. Simulation results are presented to validate the proposed AODV-WADR-TDEA scheme. It is also shown that the AODV-WADR-AES scheme outperforms the AODV-WADR-TDES scheme in terms of end-to-end delay, packet delivery ratio, and number of packets traversing through the wormhole link.

关键词： EMANETs Malicious nodes AODV Wormhole attack Cryptographic protocol AES Triple DES

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State model for scheduling built-in self-test and scrubbing in FPGA to maximize the system availability in space applications

State model for scheduling built-in self-test and scrubbing ...

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India International Conference on Power Electronics, IICPE 2010

作者： Agarwal, Ankit Bhatia, Gaurav Chakraverty, Shampa Computer Engineering Department Netaji Subhas Institute of Technology New Delhi India

ISBN: (纸本)9781424478835

Reconfigurable Field Programmable Gate Arrays (rFPGAs) are employed extensively in spacecraft electronic systems to implement low-power adaptable systems that provide high density functionality. A challenge that must be tackled during system design is their high susceptibility to radiation induced Single Event Upsets (SEUs). A burst of energized particles may cause extensive damage to circuits. Even if their presence is transient, SEU faults may cause a permanent failure when they afflict the configuration memory - SRAM. There are two ways in which timely detection of faults and timely action to circumvent them can be undertaken - (i) Online error detecting/correcting circuits that demand a high premium in terms of FPGA area for extending error-security and Fault Tolerance, thus increasing cost and redundancy, and (ii) Built-in Self-Test (BIST) that allows efficient and very high-coverage fault detection but the fault testing is performed off-line. In general, Reliability and Availability (R&A) is a crucial quality parameter. In this paper, we present a state model that schedules Self-tests judiciously to optimize availability while ensuring a high degree of reliability. The aim of system design is to determine an optimal value of the mean time to self testing λT so that faults are detected on time and are reconfigured to boost system availability.

关键词： Fault tolerance

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A genetic algorithm based approach for prioritization of test case scenarios in static testing

A genetic algorithm based approach for prioritization of tes...

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2011 2nd International Conference on computer and Communication technology, ICCCT-2011

作者： Sabharwal, Sangeeta Sibal, Ritu Sharma, Chayanika Department of Computer Science and IT Netaji Subhas Institute of Technology Delhi India

ISBN: (纸本)9781457713866

White box testing is a test technique that takes into account program code, code structure and internal design flow. White box testing is primarily of two kinds-static and structural. Whereas static testing requires only the source code of the product, not the binaries or executables, in structural testing tests are actually run by the computer on built products. In this paper, we propose a technique for optimizing static testing efficiency by identifying the critical path clusters using genetic algorithm. The testing efficiency is optimized by applying the genetic algorithm on the test data. The test case scenarios are derived from the source code. The information flow metric is adopted in this work for calculating the information flow complexity associated with each node of the control flow graph generated from the source code. This research paper is an extension of our previous research paper [18]. © 2011 IEEE.

关键词： Software testing

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Optimal Design of Single Fault Tolerant Candidate Set for a Communication Network

Optimal Design of Single Fault Tolerant Candidate Set for a ...

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International Conference on Communication Systems and Network Technologies (CSNT)

作者： A.Q. Ansari Koyel Datta Gupta Maneesha Dabas Department of Electrical Engg Jamia Millia Islamia New Delhi India Dept of Computer Science & Engg. Maharaja Surajmal Inst.of Tech. New Delhi India Dept of Computer Science & Engg. Netaji Subhas Institute of Technology New Delhi India

The cost and reliability of a network are very much affected by its topology. Moreover, the network parameters like path length and link load are also dependent on the topology used for a network. These parameters are vital for any network. Hence constructing a set of topology candidates prior to evaluation is crucial. However, constructing candidate set is a time consuming task and this time is greatly increased as the size of the network grows. Hence, computational time of an algorithm also plays a critical role in selection of the algorithm. In this paper an approach is proposed to construct candidate set for a communication network so that it can survive at least one link failure and the computational time is less than existing algorithms.

关键词： Network topology Topology Fault tolerance Fault tolerant systems Algorithm design and analysis Complexity theory computer science

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A parallel approach to context-based term weighting

A parallel approach to context-based term weighting

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2011 World Congress on Information and Communication Technologies, WICT 2011

作者： Arora, Silky Chakravarty, Shampa Dept. of Information Technology Netaji Subhas Institute of Technology New Delhi India Dept. of Computer Engineering Netaji Subhas Institute of Technology New Delhi India

ISBN: (纸本)9781467301251

Information retrieval and extraction essentially rely on estimating the relevance of words present in a large corpus of documents or text. One of the approaches to measuring relevance is analyzing the importance of words based on their statistical distribution within a document. Quite another approach ensues from their linguistic relevance within a logically perceived context. © 2011 IEEE.

关键词： Cluster computing

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Trust-Enhanced Message Security Protocol for Mobile Ad Hoc Networks

Trust-Enhanced Message Security Protocol for Mobile Ad Hoc N...

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IEEE International Conference on Communications

作者： Isaac Woungang Sanjay Kumar Dhurandher Mohammed S. Obaidat Han-Chieh Chao Chris Liu Department of Computer Science Ryerson University CAITFS Division of Information Technology Netaji Subhas Institute of Technology University of Delhi Department of Computer Sciences Monmouth University Institute of Computer Science & Information Engineering National I-lan University

ISBN: (纸本)9781457720529

Securing the routing of message in mobile ad hoc networks (MANETs) is still a challenging issue. This paper proposes an enhanced trust-based multipath Dynamic Source Routing (DSR) protocol (so-called ETB-MDSR) to securely transmit messages in MANETs. Our method consists in a combination of soft-encryption, novel trust management strategy, and multipath DSR routing. Simulation results are presented to validate our proposal, showing that our ETB-MDSR scheme outperforms a recently proposed Trust-Based Multipath DSR message scheme (TB-MDSR), in terms of route selection time.

关键词： Mobile ad hoc networks Multi-path DSR Trust management model Soft encryption

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