College of Engineering, Pune

About: College of Engineering, Pune is a based out in . It is known for research contribution in the topics: Computer science & Sliding mode control. The organization has 4264 authors who have published 3492 publications receiving 19371 citations. The organization is also known as: COEP.

Mobile cloud computing: Security threats

Abstract: Within the previous few years, the globe of mobile computing has grown enormously. Devices like PDAs, handhelds and digital cellular phones that started off as gadgets of luxury became a necessity in today's “always-stay-connected” method. To facilitate quality of such devices whereas not disconnection from the network, Mobile scientific discipline came into existence. this permits the mobile node to use 2 scientific discipline addresses: a tough and quick home address and a care-of address that changes at each new purpose of attachment. but with the advantages of Mobile scientific discipline to boot came the disadvantages, the biggest of them being that of security. throughout this paper, we've got a bent to debate a number of the common security threats that mobile scientific discipline networks square measure exposed to what is more as some planned solutions to agitate such threats. The recent years have witnessed an unbelievable growth among the vary of mobile internet users and they would really like for quality support is indispensable for seamless internet property. Mobile scientific discipline may be a top quality support protocol that supports roaming across multiple Access Points whereas not having to re-establish the highest to end affiliation. throughout this paper, we've got a bent to require the position that despite several challenges that Mobile scientific discipline faces, it would sway be the protocol for supporting quality among the longer term. we've got a bent to support our claim by analyzing the factors which will influence the widespread adoption of Mobile scientific discipline which we tend to go any to dialogue the counter claims in a trial to convert the reader that the advantages of Mobile scientific discipline outweighs its disadvantage.

Design of fractional order controller for undamped control system

Abstract: This paper deals with design of fractional order controller (PIλDμ) for undamped control system, where order of integrator and derivative are fractional. A more robust and optimal controller design can be achieved by using fractional order controller because there are two more parameters compare with classical PID controller. For tuning of fractional order controller, optimization method called nelder mead is used. Simulation result shows that fractional order controller can achieve better result compare with classical PID controller.

Analysis of Arching in Soil-Passive State

Abstract: Arching involves stress transfer from yielding part of a soil to unyielding part of soil. Many authors considered arching action for active earth pressure. In this paper arching action is considered for passive earth pressure in noncohesive backfill. The backfill is assumed to move upward in a form of catenary arch due to arching. The value of θw (the angle of major principal plane) is calculated for soil-wall friction angle and soil friction angle. An expression for passive lateral stress ratio has been derived considering these angles. An illustrative example has been solved to show the effect on earth pressure distribution on retaining wall considering arching for different wall friction angles and soil friction angles. The applicability of proposed formulation is compared with model test results.

Synthesis of bis(indolyl)methanes using molten N-butylpyridinium bromide

Abstract: A simple and rapid protocol has been developed for the synthesis of bis (indolyl)methane compounds in excellent yields using molten N -butyl-pyridinium bromide as a solvent and a working catalyst for the reaction. Synthesis of bis (indolyl)methane compounds were accomplished at moderate experimental conditions of temperature and ambient pressure, also involving an electrophilic substitution reaction of indoles with several aromatic aldehydes. The derivatives were confirmed with mass and other usual spectroscopic techniques. A discussion on plausible mechanism for the reaction is also presented.