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Anbukaruppusamy S.,Shree Venkateshwara Hi Technology Engineering College | Batri K.,PSNA College of Engineering and Technology
Life Science Journal | Year: 2013

Wireless multi-hop adhoc network, a group of mobile devices or nodes form an infrastructure-less wireless network. Packets are relayed over multiple hops from source to destination via wireless links. The attractive characteristics of wireless ad hoc networks are ease of deployment, no wired installation, maintenance cost, and flexibility of mobility. In a number of environments, there is a role for the wireless multi-hop ad hoc networks as an alternative to a wired LAN. Some example include building with large open areas, such as manufacturing plants, stock exchange trading floors, and warehouses; historical buildings with insufficient twisted pair and where drilling holes for new wiring is prohibited; and small offices where installation and maintenance of wired LANs is not economical. In all of these cases, a wireless multi-hop ad hoc network provides an effective and more attractive alternative. In this work we developed an algorithm named Explicit Congestion Control Protocol with Buffer Management (ECCPBM) for Multi-Hop Wireless Networks which controls the congestion in the wireless network and fairly allocates the network resources among the communication flows and also minimizes the delay of packet sending between the source and destination. Source


Venkatajalapathi S.,Shree Venkateshwara Hi Technology Engineering College | Murali K.R.,CSIR - Central Electrochemical Research Institute
Journal of Materials Science: Materials in Electronics | Year: 2014

AgInS2 films were pulse electrodeposited on tin oxide coated glass substrates at different duty cycles for the first time. The films were single phase with orthorhombic structure. Optical absorption measurements indicated a band gap in the range of 1.90-2.02 eV with decrease of duty cycle. Transmission spectra exhibited interference fringes. Using the envelope method, refractive index was calculated. Optical conductivity was evaluated from the absorption coefficient and refractive index data. Optical data was analyzed by the single-effective oscillator model. © 2014 Springer Science+Business Media New York. Source


Thirumoorthy M.,Shree Venkateshwara Hi Technology Engineering College | Murali K.R.,CSIR - Central Electrochemical Research Institute
Journal of Materials Science: Materials in Electronics | Year: 2015

CuAlSe2 films were pulse electrodeposited on tin oxide coated glass substrates at different duty cycles for the first time. X-ray diffraction studies indicated single phase chalcopyrite CuAlSe2. Strain, crystallite size and dislocation density were evaluated from the X-ray diffraction data. The Cu/Al ratio approaches unity at higher duty cycles. Electrical transport properties of the films indicated that the resistivity of the films decreased with increase of duty cycle. Photoelectrochemical cells were fabricated with the films deposited at different duty cycles. Films deposited at 50 % duty cycle indicated high photo output. Capacitance voltage measurements were made and the nature of the plot indicated p-type behaviour. © 2015, Springer Science+Business Media New York. Source


Muthukumar R.,Shree Venkateshwara Hi Technology Engineering College
International Journal of Applied Engineering Research | Year: 2014

Power delivery performance of the distribution systems has to be enhanced with help of recent technologies. System efficiency can be improved by controlling power loss. The popular techniques adapted to control the power loss are Distribution system reconfiguration and optimal capacitor placement. This paper proposes a method to handle reconfiguration and capacitor placement simultaneously for the effective optimization. It utilizes Opposition based Differential Evolution (ODE) algorithm for efficient searching for the optimal solution. In order to consider the constraints along with the objective, heuristic Fuzzy has been integrated with ODE and the proposed technique is termed as FODE. The effectiveness of the proposed approach is demonstrated by employing the feeder switching operation scheme to 83-Bus Taiwan Power Company Distribution System The proposed algorithm reduces the transmission loss and improve the saving of cost while satisfying power flow constraints. © Research India Publications. Source


Muthukumar R.,Shree Venkateshwara Hi Technology Engineering College
Journal of Electrical Engineering and Technology | Year: 2014

Distribution system is a critical link between customer and utility. The control of power loss is the main factor which decides the performance of the distribution system. There are two methods such as (i) distribution system reconfiguration and (ii) inclusion of capacitor banks, used for controlling the real power loss. Considering the improvement in voltage profile with the power loss reduction, later method produces better performance than former method. This paper presents an advanced evolutionary algorithm for capacitor inclusion for loss reduction. The conventional sensitivity analysis is used to find the optimal location for the capacitors. In order to achieve a better approximation for the current candidate solution, Opposition based Differential Evolution (ODE) is introduced. The effectiveness of the proposed technique is validated through 10, 33, 34 and85-bus radial distribution systems. Source

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