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2011 World Congress on Information and Communication Technologies, WICT 2011

作者： Luthra, Jitin Pal, Saibal K. Department of Manufacturing Processes and Automation Engineering Netaji Subhas Institute of Technology New Delhi India Scientific Analysis Group Defense Research and Development Organization New Delhi India

ISBN: (纸本)9781467301251

The monoalphabetic substitution cipher encrypts a given text by replacing every letter in the text with a different letter according to some predefined scheme. The cryptanalysis of this cipher involves the identification of this scheme using known language statistical data. The firefly algorithm (FA) is a metaheuristic algorithm, inspired by the flashing behavior of fireflies. This paper discusses the integration of the operators of mutation and crossover commonly used in Genetic Algorithms with the Firefly Algorithm for cryptanalysis of the monoalphabetic substitution cipher. © 2011 IEEE.

关键词： Genetic algorithms

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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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International Conference on computer and Communication technology (ICCCT)

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

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].

关键词： Testing Biological cells Genetic algorithms Complexity theory computers Measurement Communications technology

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Implementation of 2D MUSIC Algorithm for Denoising,Representing and Classification of Microarray Data

Implementation of 2D MUSIC Algorithm for Denoising,Represent...

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2011 4th IEEE International Conference on computer Science and Information technology(ICCSIT 2011)

作者： Pragya Goel Roshan Shankar Sonika Bhatnagar Harish Parthasarathy Division of Computer Engineering Netaji Subhas Institute of Technology University of Delhi New Delhi Division of Biotechnology Netaji Subhas Institute of Technology University of Delhi New Delhi Division of Electronics and Communication Engineering Netaji Subhas Institute of Technology University of Delhi New Delhi

ISBN: (纸本)9781612848334

Microarray is a potential tool to explore information inside *** simultaneously monitoring the expression levels of thousands of genes under specified experimental conditions and using clustering and statistical signal processing techniques on these expression levels it is possible to classify biological specimens(***).However,a prime limitation of microarray data used for analytics and extrapolation is the presence of *** present a novel method utilizing the 2D MUSIC Algorithm for denoising,representation and classification of microarray *** 2D MUSIC algorithm is a frequency estimation technique that separates the high dimensional microarray data into a signal and a noise subspace. It is therefore possible to extract the complex frequency components of a signal in presence of *** algorithm was implemented on a publicly available microarray dataset of lung epithelial cells of smokers with and without cancer. Further,a difference frequency estimator function was used to train an eigenvector based classification tool to distinguish between the microarray data from smokers with and without *** application of this 2D MUSIC Algorithm to the input dataset containing variegated distribution of normal and diseased samples,it was possible to distinguish discernibly between cancerous and non-cancerous samples with good *** technique has potential applications for prognosis and treatment of cancer.

关键词： Microarrays,Denoising,2D MUSIC,Data representation,Classification,Eigenvector function

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Backside thinning of GaAs wafer by lapping using DOE approach

Backside thinning of GaAs wafer by lapping using DOE approac...

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India International Conference on Power Electronics, IICPE 2010

作者： Prakash, Siddi Jai Tyagi, Rinki Gupta, Ashish Department of Electronics and Communication Engineering Netaji Subhas Institute of Technology Delhi India Department of Electronics and Communication Engineering G.B. Pant Engineering College Delhi India Department of Electrical and Electronics Engineering Northern India Engineering College Delhi India

ISBN: (纸本)9781424478835

In this paper, a procedure to achieve efficient and high quality backside thinning of GaAs wafer using the lapping machine is demonstrated and the precautions and set of rules to be followed to utilize it productively are given. We selected the 4 main parameters affecting the lapping process i.e. concentration of the slurry (5 μm Al2O3 used here), pressure on the lapping plate, drop rate from the cylinder, rotations per minute of the lapping plate as the major independent variables and statistically designed the experiment in order to get the best lapping rate. The lapping process was carried out using Logitech PM2A lapping and polishing machine. Best lapping rate of 2 μm/ min was observed in the case when rpm was kept low and all other parameters high. Thus this work provides a set of key notes and observations necessary for the lapping of GaAs wafer using the Logitech PM2A machine with the help of the statistical data of the Design of Experiment (DOE) results to achieve the best lapping rate. ©2011 IEEE.

关键词： Design of experiments

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A State Variable Method for the Realization of Universal Current-Mode Biquads

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Circuits and Systems 2011年第4期2卷 286-292页

作者： Raj Senani Kasim Karam Abdalla Data Ram Bhaskar Division of Electronics and Communication Engineering Netaji Subhas Institute of Technology Department of Electronics and Communication Engineering Faculty of Engineering and Technology Jamia Millia Islamia

A state variable method of converting single-resistance-controlled- oscillators (SRCO), into universal current-mode biquad (offering realizations of all the five standard filter functions namely, low pass, band pass, high pass, notch and all pass) has been highlighted. The workability of the exemplary implementation of the derived current-mode universal biquad has been demonstrated by PSPICE simulation results based upon 0.35 μ m technology. It is expected that the proposed method can be applied to other SRCOs to generate other multifunction filter structures.

关键词： Analog Electronics Circuit Theory and Design Current Mode Circuits Universal Biquads Current Conveyors

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SDC: Secure deletion classification

SDC: Secure deletion classification

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International Conference on Recent Trends in Information technology (ICRTIT)

作者： Anand Gupta Manik Singhal Akash Gangil Abhishek Mishra Division of Computer Engineering Netaji Subhas Institute of Technology Delhi University New Delhi India

This paper introduces a novel perspective by classifying the secure deletion methods into four categories based on their methodology. For each of the proposed deletion category its associated algorithm is explained and its merits and demerits are listed down. The deletion algorithm for each category have been simulated and evaluated with respect to security level and time complexity on commonly used file formats. Based on the results derived, the application scenarios suitable for each of the deletion category are presented. This research is likely to help the user make a more informed choice of the deletion method suitable for his need.

关键词： Security Complexity theory Context File systems Classification algorithms Linux Measurement

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Electronically-Controlled Current-mode second order Sinusoidal Oscillators Using MO-OTAs and Grounded Capacitors

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Circuits and Systems 2011年第2期2卷 65-73页

作者： Data Ram Bhaskar Kasim Karam Abdalla Raj Senani Department of Electronics and Communication Engineering Faculty of Engineering and Technology Jamia Millia Islmia Division of Electronics and Communication Engineering Netaji Subhas Institute of Technology

Five new electronically-controllable second order current-mode sinusoidal oscillators using three mul-ti-output operational transconductance amplifiers (MO-OTAs) and two grounded capacitors (GC) have been presented. Simulation results are included to confirm the theoretical analysis based upon CMOS OTAs implementable in 0.5 μm technology.

关键词： Oscillators Analog Electronics Current Mode Circuits Operational Transconductance Amplifiers

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Design optimization using Genetic Algorithm and Cuckoo Search

Design optimization using Genetic Algorithm and Cuckoo Searc...

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2011 IEEE International Conference on Electro/Information technology, EIT 2011

作者： Kumar, Anil Chakarverty, Shampa Product Engineering Services Business Unit Patni Americas Inc India Faculty of Technology Delhi University New Delhi India Division of Computer Engineering Netaji Subhas Institute of Technology Azad Hind Fauz Marg Sector-3 Dwarka New Delhi 110078 India

ISBN: (纸本)9781612844657

Genetic algorithm (GA) is widely used for embedded system design optimization. GA needs repeated evaluation of fitness function, but for complex embedded systems fitness function evaluation is costly as it includes multiple objectives. A recently proposed Cuckoo Search (CS) method does not require repeated evaluation of fitness function and can provide a set of optimal solutions within a reasonable time. This paper compares the application of GA and CS algorithm to the problem of design space exploration and discusses their empirical comparison. © 2011 IEEE.

关键词： Heuristic algorithms

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Performance Analysis of FSO Communication Using Different Coding Schemes

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AIP Conference Proceedings 2011年第1期1391卷 389-391页

作者： Nidhi Gupta Siddi Jai Prakash Hemani Kaushal V. K. Jain Subrat Kar aElectronics and Communication Department Netaji Subhas Institute of Technology Delhi India bDepartment of Electrical Engineering Indian Institute of Technology Delhi India

A major impairment in Free Space Optical (FSO) links is the turbulence induced fading which severely degrades the link performance. To mitigate turbulence induced fading and, therefore, to improve the error rate performance, error control coding schemes can be used. In this paper, we investigate the bit error performance of FSO links with different coding techniques over log normal atmospheric turbulence fading channels. The modulation scheme considered is BPSK. On the basis of computed results using Monte Carlo simulation, a comparative study of uncoded and coded systems is made.

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Real-time geo influence in social networks

Real-time geo influence in social networks

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International Conference on Electronic computer technology

作者： Tushar Rao Sushama Nagpal Department of Computer Science Netaji Subhas Institute of Technology University of Delhi New Delhi India

Exponential burst of real-time information generated through Social Media Networks in recent years, creates a hot ubiquitous platform for research among data scientists. Main area under spotlight in Social Networks Analysis (SNA) is friendship networks, user influence and computation of how deep and how fast the information diffuses. Amidst recent upsurge in Smartphone usage statistics, there is spectacular rise in tagging of feeds and post them with locations due to GPS localizations (Geo-tags and location coordinates of images and news feeds). For the local advertisers and social campaigners, it is vital to carve out phase based user reach models in a particular city/location. In this paper, an algorithm to calculate real-time geo influence of twitter users pertaining to location and time constraints is proposed and necessitate its requirement to meet the vital requisite to find out how fast information is spread by a particular user in a certain city/area and hence providing a platform for ranking them based on their influence in a particular place, and measuring speed of information travel. Subject Descriptors-Data mining and social computing, Social and Behavioural Sciences.

关键词： Twitter Media Business Indexes Real time systems Blogs

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