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Birajdar G.K.,Priyadarshini Institute of Engineering and Technology | Mankar V.H.,Government Polytechnic
International Journal of Wavelets, Multiresolution and Information Processing | Year: 2016

High resolution digital cameras and state-of-the-art image editing software tools has given rise to large amount of manipulated images leaving no traces of being subjected to any manipulation. Passive or blind forgery detection algorithms are used in order to determine its authenticity. In this paper, an algorithm is proposed that blindly detects global rescaling operation using the statistical models computed based on quadrature mirror filter (QMF) decomposition. Fuzzy entropy measure is employed to choose the relevant features and to remove non-important features whereas artificial neural network classifier is used for forgery detection. Experimental results are presented on grayscale and (Formula presented.)-component images of UCID database to prove the validity of the algorithm under different interpolation schemes. Results are provided for the detection of rescaled images with JPEG compression, arbitrary cropping and white Gaussian noise addition. Further, results are shown using USC-SIPI database to prove the robustness of the algorithm against the type of database. © 2016 World Scientific Publishing Company Source

Bhonsle J.,Priyadarshini Institute of Engineering and Technology | Junghare A.,Visvesvaraya National Institute of Technology
Turkish Journal of Electrical Engineering and Computer Sciences | Year: 2016

Synchronized phasor measurement units (PMUs) are replacing conventional measuring meters in modern power networks. The paradigm of grid monitoring has shifted to a wider area. This offers better monitoring, protection, and control of the overall power grid. This paper presents an approach for optimal placing of PMUs in constrained power grids using the binary integer programming technique. The proposed approach deals with four constraints: 1) observability of network, two cases of fully observable and partially observable networks are investigated; 2) conventional measurements, three cases of zero injection bus and injection measurement, conventional power flow measurement, and both injection and power flow measurement are considered; 3) failure of a single PMU or communication line; and 4) rate of failure of PMUs or communication line, two cases of low and high are considered. The proposed approach is tested on an IEEE 14-bus system, a 21-bus 400-kV real power system, and an IEEE 30-bus system. This study will help the power system planner to design an economical, efficient, and reliable monitoring system. © 2016 TÜBİTAK. Source

Gurnule W.B.,Kamla Nehru Mahavidyalaya | Mandavgade S.K.,Priyadarshini Institute of Engineering and Technology
Research Journal of Pharmaceutical, Biological and Chemical Sciences | Year: 2014

The copolymer resin 4-HACF has been synthesized by the condensation of 4-hydroxyacetophenone (4-HA) and catechol (C) with formaldehyde (F) in 1:1:2 molar ratios in presence of 2M hydrochloric acid as catalyst. UV-Visible, IR and proton NMR spectral studies have been carried out to elucidate the structure of the resin. Electrical conductivity measurements have been carried out to ascertain the semiconducting nature of the copolymer resin. The electrical properties of 4-HACF copolymer were measured over a wide range of temperature (313-428K), activation energy of electrical conduction has been evaluated and plot of log α vs 1000/T is found to be linear over a wide range of temperature, which can be ranked it as semiconductor. This remarkable property of this copolymer resin may be used to make a wide range of semiconducting and electronic devices such as transistors, light emitting diodes, solar cells and even lasers which can be manufactured by much simpler way than conventional inorganic semiconductors. Scanning electron microscopy (SEM) was used to determine the surface features of the resin. Source

Dontulwar J.R.,Priyadarshini Institute of Engineering and Technology
Der Pharma Chemica | Year: 2014

A novel ecofriendly polymer synthesized using starch, glycerol, sorbitol and maleic anhydride was found to be biodegradable having BOD to COD Ratio 0.6075(1). After ensuring its biodegradability and HLB Ratio we have decided to use it for the detergent formulation. Few formulations based on dolomite, polymer combination were formulated. These polymer dolomite detergent combination have shown good performance characteristics as for as reduction in surface tension of water, foam volume and percent detergency is concerned. Source

Dontulwar J.R.,Priyadarshini Institute of Engineering and Technology
Der Pharma Chemica | Year: 2013

Various liquid detergents were formulated using ecofriendly polymer of mixed carbohydrate and glycol origin. The samples were showing excellent results in terms of performance like reduction in surface tension of water, foam volume and percent detergency. The samples have shown remarkably good performance at par with conventional samples of petroleum origin. Source

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