Narula Institute of Technology

About: Narula Institute of Technology is a based out in . It is known for research contribution in the topics: Quantum dot cellular automaton & Cognitive radio. The organization has 288 authors who have published 490 publications receiving 2258 citations. The organization is also known as: NiT.

Energy efficient modified SPIN protocol with high security in Wireless Sensor Networks using TOSSIM

Abstract: Sensor nodes are very important attribute in Wireless Sensor Networks (WSNs), due to communication over wireless links but it has some constrains i.e. limited transmission range, processing, storage capacity and energy. To get secure communication under these circumstances SPIN protocol incorporated data security for transferring data safely to the destination. To overcome the problem of SPIN protocol such as blind forward and data inaccessible, in this paper, we propose and design modified SPIN routing protocol to save energy and give secure transmission to minimize overhead with data delivery guarantees. Our goal is to find an optimal path and efficient implementation of protocol for data negotiation, set up route and finally transfer data to specific nodes. Our novelty in this paper is more secure data transmission than SPIN. The simulations have been carried out by new operating system TOSSIM to compare data transfer rate with communication security and lifetime of networks.

Ritz variational calculation for two-electron–one-photon transitions in helium

Abstract: Variational calculations for the energy levels of doubly excited $3dnf$ $(^{1,3}D^{\ensuremath{\circ}})$ states $(n=4--12)$ for helium have been performed using the extended Hylleraas basis set. No previous calculations for the energy eigen-values for the $3dnf$ $(^{1,3}D^{\ensuremath{\circ}})$ states for $(n=7--12)$ exist. Prediction of two-electron--one-photon peaks at 12.220, 12.649, 12.859, 12.978, 13.054, 13.110, 13.141, 13.168 and $13.213\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$ corresponding to the transitions $2{p}^{2}$ $(^{3}P^{\mathrm{e}})\ensuremath{\rightarrow}3dnf$ $(^{3}D^{\ensuremath{\circ}})$ $(n=4--12)$, respectively, is reported here. Highly precise energy eigenvalues of doubly excited $2pnd$ states $(^{1,3}D^{\ensuremath{\circ}})$ $(n=3--8)$ for helium are also reported and the upper bound energies are the lowest yet obtained. The effective quantum numbers $({n}^{*})$ of the above mentioned states are calculated using quantum defect theory.

Water hammer protection in water supply system: A new approach with practical implementation

Abstract: An unprotected water pipe mainly suffers frequent damages due to water hammer surges developed inside the pipe lines. This paper studied the effect of water hammer in a water delivery pipe theoretically and developed a novel method to combat the damage. The Public Health Engineering Directorate, Government of West Bengal, India has set up an arsenic area piped water supply scheme in the year 2003 in South 24 Pgs, West Bengal, where about 320Km length of water mains have been laid to supply arsenic free drinking water to the arsenic affected consumers. It was suffering from frequent ruptures of pipe joints and its weaker portions due to water hammer surges. From the result of theoretical studies a novel method has been developed and implemented in this water supply scheme to combat the situation. The project is consisting of a smart electronic pressure transmitter, PLC based SCADA system and valve automation. The method of measurement of surge pressure at the header end of the water mains and the method of bypassing some part of water from water mains back to the water storage are used in this technique. This method absorbs sudden surge developed due to water hammering inside the pipe and thus maintains surge free water supply at a desired pressure. The Zero Failure rates of the water mains are observed after the installation of this technique. One installation per two ground water storage connected with water mains of maximum length 32Km is suggested.

Sequentially combined mean-median filter for high density salt and pepper noise removal

Abstract: Salt and pepper noise removal is extremely challenging task when the noise density is very high in the corrupted image Usually the existing filters are not capable of removing this noise above 70% density This paper proposes a Sequentially Combined Mean-Median Filter (SCMMF) based on combination of arithmetic mean and median technique A binary flag image is generated with the help of identified noisy pixels which are first replaced by a value calculated by plus (+) operation with nearest pixels intensities The remaining noisy pixels are then replaced by neighbourhood mean operations Finally the image quality is enhanced by the median of the corresponding window Border operation is also incorporated to preserve the image size Experimental results show that SCMMF is outstanding from visual qualitative judgments for a number of standard images Moreover, this combined filter outperform over the existing with respect to MSE, PSNR, and SSIM comparison even at 92% noise density level