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Sathyanarayana S.V.,JNNCE | Kumar M.A.,MSRIT | Bhat K.N.H.,NCET
International Journal of Network Security | Year: 2011

In this paper, cyclic elliptic curves of the form y2 + xy = x3 + ax2 + b, a, b ∈ GF(2m) with order M is considered in the design of a Symmetric Key Image Encryption Scheme with Key Sequence derived from random sequence of cyclic elliptic Curve points. P with coordinates (xP; yP) which satisfy the elliptic curve equation is called a point on elliptic curve. The order M is the total number of points (x,y) along with x =∞; y =∞ which satisfy the elliptic curve equation. Least integer N for which NP is equal to point at infinity O is called order of point P. Then P, 2P,. .. (N-1)P are distinct points on elliptic curve. In case of cyclic elliptic Curve there exists a point P having the same order N as elliptic curve order M. A finite field GF(p) (p ̧ N) is considered. Random sequence {ki} of integers is generated using Linear Feedback Shift Register (LFSR) over GF(p) for maximum period. Such sequences are called maximal length sequences and their properties are well established. Every element in sequence {ki} is mapped to kiP which is a point on cyclic elliptic Curve with coordinates say (xi; yi). The sequence {kiP} is a random sequence of elliptic curve points. From the sequence (xi; yi) several binary and non-binary sequences are derived. These sequences find applications in Stream Cipher Systems. Two encryption algorithms - Additive Cipher and Affine Cipher are considered. Results of Image Encryption for a medical image is discussed in this paper. Here, cyclic elliptic Curve over GF(28) is chosen for analysis.

Dhiman M.,MSRIT | Jadhav M.,MSRIT
4th IEEE Sponsored International Conference on Computation of Power, Energy, Information and Communication, ICCPEIC 2015 | Year: 2015

Vehicular ad hoc networks are a subclass of wireless networks in which vehicles on the road act as nodes, exchanging traffic and road safety information. The main distinguishing feature of VANET is that they are highly dynamic and have variable speed and therefore, demands a reliable routing strategy. Our objective is to purpose a routing algorithm that provides the reliable route to the user for the data transmission. This routing protocol helps in detecting the link breakage, minimizes it and thereby improves the throughput. This mechanism is based on the mathematical model of normal (Gaussian) distribution, which is a continuous probability distribution function. This function is used to estimate the link reliability between the vehicular nodes in the road[1]. This route forms the Most Reliable Journey for the data transmission. Moreover, the Link expiration time will be computed based on the velocity and direction of the vehicle, then the route reliability value and route expiration time can be given as an input to fuzzy logic to find most reliable journey from source to destination considering both the velocity parameter and the direction parameter. Fuzzy logic will help in deciding the reliable value and the most reliable path for the vehicle. © 2015 IEEE.

Raghu R.,MSRIT | Shobha K.R.,MSRIT
Communications in Computer and Information Science | Year: 2012

This paper presents the concept of JavaScript Application Framework (JSAF) which is a Platform Independent Model (PIM). This Paper aims at developing an application framework using web developing languages which supports the usage on all platforms making it easy for the developers to use the application framework to develop applications. JSAF is used for creating applications for Mobile Devices which supports a Browser which can render advanced web developing languages such as JavaScript, HTML5 and CSS3. The JSAF provides all the basic User-Interface (UI) widgets required for the Application Development to the Application developer. The JSAF Application is rendered on a Browser which will load JSAF framework prior to the Application. JavaScript Application Framework has the Multitasking feature and Cross Application Communication feature. JavaScript Application Framework is developed at Samsung India Software Operations and proprietary. © 2012 Springer-Verlag.

Ahmed M.R.,Bangalore University | Sujatha B.K.,MSRIT
International Journal of Engineering and Technology | Year: 2015

The sudden realization of need to modify the machines at architectural level to exhibit intelligence has led many investigations in Biological systems. "Humans" being most intelligent living things are the subject matter. Human Brain is one of the complex system which we are still unable to understand and mimic. In our pursuit of emulating human intelligence using complex hardware systems, many interdisciplinary domains have emerged. Neuromorphic engineering is a domain where electronic systems are designed based on Bio-inspired architectures. This paper provides a Brief review of The Journey of Human race towards imitating human intelligence in machines. Various Facts, Theories and Hypotheses in the domain of Neuromorphic Engineering are discussed. This work outlines the various approaches, architectures, devices and methodologies used in Electronic Implementation of Neuromorphic Systems. This paper will act as primer for any researcher willing to implement morphological circuits. Here we have discussed the progress of current trends in implementation of Cognition in Machine. The gap between software simulation and hardware emulation, FPGA and VLSI implementation is debated. To reach to a wider audience the limitations and open research issues pertaining to Hardware implementation of Bio-inspired architectures are discussed.

Srilatha N.,Indian Institute of Science | Madhavi Latha G.,Indian Institute of Science | Puttappa C.G.,MSRIT
Geotextiles and Geomembranes | Year: 2013

This paper studies the effect of frequency of base shaking on the dynamic response of unreinforced and reinforced soil slopes through a series of shaking table tests. Slopes were constructed using clayey sand and geogrids were used for reinforcing the slopes. Two different slope angles 45° and 60° were used in tests and the quantity and location of reinforcement is varied in different tests. Acceleration of shaking is kept constant as 0.3 g in all the tests to maximize the response and the frequency of shaking was 2 Hz, 5 Hz and 7 Hz in different tests. The slope is instrumented with ultrasonic displacement sensors and accelerometers at different elevations. The response of different slopes is compared in terms of the deformation of the slope and acceleration amplifications measured at different elevations. It is observed that the displacements at all elevations increased with increase in frequency for all slopes, whereas the effect of frequency on acceleration amplifications is not significant for reinforced slopes. Results showed that the acceleration and displacement response is not increasing proportionately with the increase in the frequency, suggesting that the role of frequency in the seismic response is very important. Reinforced slopes showed lesser displacements compared to unreinforced slopes at all frequency levels. © 2012 Elsevier Ltd.

Kamali C.,National Aerospace Laboratories, Bangalore | Pashilkar A.A.,National Aerospace Laboratories, Bangalore | Raol J.R.,MSRIT
Aerospace Science and Technology | Year: 2011

This paper presents results of evaluation of Recursive Least Squares (RLS) algorithm for real time applications in flight control and testing. The RLS proposed here is based on the equation error principle and can start with zero values of the unknown parameters. The technique makes use of only forgetting factor and a stabilizing parameter to achieve better convergence characteristics. In the present study, the RLS technique is applied for parameter estimation in the context of (i) reconfigurable/restructurable control, (ii) estimation of aircraft short period and Dutch roll characteristics in the absence of calibrated air data, and (iii) online stability (gain and phase) margin estimation. © 2010 Elsevier Masson SAS.

Sathyabhama A.,MSRIT
Heat and Mass Transfer/Waerme- und Stoffuebertragung | Year: 2012

Nucleate pool boiling heat transfer coefficients were determined experimentally for NH 3-H 2O, NH 3-H 2O-LiNO 3 and NH 3-H 2O-LiBr mixtures. Both the salts were effective in increasing the heat transfer coefficient of NH 3- H 2O mixture. A concentration of 10 mass% of the salts in water, produced the greatest enhancement in heat transfer coefficient at all the range of pressure, heat flux and ammonia concentration studied in this investigation. The experiments indicated that ammonia concentration also has the impact on the augmentation of heat transfer coefficient in NH 3-H 2O binary mixture by the addition of salts. For the solution of ammonia mass fraction 0.30, high concentration of LiBr gives the highest heat transfer coefficient, for ammonia mass fraction of 0.25, high concentration of LiNO 3 gives the maximum heat transfer coefficient, for ammonia mass fraction of 0.15, both the salts are equally effective in increasing the heat transfer coefficient. © Springer-Verlag 2011.

Rajeshwari C.N.,Bangalore University | Srinivasa K.G.,MSRIT
Proceedings - 2015 IEEE International Conference on Cloud Computing in Emerging Markets, CCEM 2015 | Year: 2015

Scheduling tasks in the cloud computing environment, particularly for data intensive applications is of great importance and interest. In this paper, we propose a new workflow model presented in a rigorous graph-Theoretic setting. In this new model, we would like to incorporate possible similarities between requisite files which are needed to complete the given set of tasks. We show that it is NP-Complete to compute the make span in this model even with oracle access to the cost of retrieving a file. © 2015 IEEE.

Rajani H.P.,KLE University | Kulkarni S.Y.,MSRIT
Proceedings of International Conference on Circuits, Communication, Control and Computing, I4C 2014 | Year: 2014

New Multi-mode SRAM cells to suit applications with different power consumption during both active and sleep mode of states with data preservation requirements are discussed in this work. Proposed PSVG and MNSVP SRAM cells are capable of substantial reduction of leakage power resulting due to subthreshold leakage current and gate leakage current with good access timings. © 2014 IEEE.

Punith Kumar H.L.,M.S.R.I.T. | Shrinivasan L.,M.S.R.I.T.
2015 International Conference on Computing for Sustainable Global Development, INDIACom 2015 | Year: 2015

Auto modulation recognition schemes of digitally modulated signal plays a vital role in both military and civil applications like software defined radio, electronic warfare, cognitive radio systems, radio spectrum management, threat analysis and electronic surveillance. In this paper we proposed a new algorithm to distinguish between 6 digital modulation schemes (ASK-2, FSK-2, PSK-2, ASK-4, FSK-4, and PSK-4). Simulation results show that the overall recognition of the new algorithms is of 98.8% when the signal to noise ratio (SNR) = 4dB. The new methodology uses only 3 key parameters to distinguish between digital modulated signals and hence reduces the computational loads and improves the performance. © 2015 IEEE.

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