Ghosh T.,Gurunanak Institute of Technology |
Mitra S.,Bengal Engineering and Science University
International Conference on Intelligent Systems Design and Applications, ISDA | Year: 2012
The wireless access in vehicular environment system is developed for enhancing the driving safety and comfort of automotive users. However, such system suffers from quality of service degradation for safety applications caused by the channel congestion in scenarios with high vehicle density. The present work is a congestion control mechanism in vehicular ad-hoc network. It supports the communication of safe and unsafe messages among vehicles and infrastructure. Each node maintains a control queue to store the safe messages and a service queue to store the unsafe messages. The control channel is used for the transmission of safe messages and service channel is used for the transmission of unsafe messages. Each node computes its own priority depending upon the number of waiting messages in control queue and service queue. Each node reserves a fraction of control channel and service channel dynamically depending upon the number of waiting messages in its queue. The unsafe messages at a node may also be transmitted using control channel provided the control channel is free and service channel is overloaded which helps to reduce the loss of unsafe message at a node which in turn reduces the congestion level of a node and also improves its quality of service. The available bandwidth is also distributed among the nodes dynamically depending upon their priority. The performance of the proposed scheme is evaluated on the basis of average loss of unsafe message, average delay in safe and unsafe message, storage overhead per node. © 2012 IEEE.
Ghosal S.,Jadavpur University |
Goswami B.,Jadavpur University |
Ghosh R.,Jadavpur University |
Banerjee P.,Gurunanak Institute of Technology
Proceedings - 2nd International Conference on Emerging Applications of Information Technology, EAIT 2011 | Year: 2011
A new method is being proposed in this paper to ascertain the stability of the dental implant after its placement in situ. One of the established methods of doing this is by monitoring the change of resonance frequency of the system with time which is typically referred to as Resonance Frequency Analysis . Traditionally, the resonance frequency is identified from the magnitude of measured voltage using a two piezo arrangement in which one piezo acts as the source for the mechanical vibration transmitted into the system while the second piezo acts as the pick up . In the present work, the resonance frequency has been identified separately by analysing the magnitude as well as the phase plots of the impedance of the (single piezo) transducer attached to the total system. A comparative study has been done of the magnitude and the phase of the impedance of the total system as the resonance frequencies change with time. From this study, it is observed that the phase of the impedance is a more reliable indicator for inferring the stability of the dental implant. © 2011 IEEE.
Biswas S.,Gurunanak Institute of Technology |
Sil J.,Bengal Engineering and Science University
2013 IEEE Recent Advances in Intelligent Computational Systems, RAICS 2013 | Year: 2013
Automatic gender classification has immense applications in many commercial domains. In the paper, spatial and temporal feature based gender classification technique has been proposed. In the first step, texture based features in the spatial domain are extracted by dividing the training images into no. of blocks. Covariance matrix and singular value decomposition method has been applied on each block to extract the features. Discrete Wavelet Transform (DWT) has been introduced in the second step to extract temporal features. The feature vectors of test images are obtained and classified as male or female by Weka tool using 10 fold cross validation technique. The proposed approach provides 98% recognition rate on GTAV database while 91% on FERET database. © 2013 IEEE.
Ashok J.,Gurunanak Institute of Technology |
Rajan E.G.,Pentagram Research Center
European Journal of Scientific Research | Year: 2012
Handwriting has continued to persist as a means of communication and recording information in day-to-day life even with the introduction of new technologies. This paper describes performance comparison of Rajan transform and Radial basis function on offline hand written character recognition. Importance of handwriting in human transactions, machine recognition of handwriting has practical significance, as in reading handwritten notes in a personal Digital Assistant (PDA), in postal addresses on envelopes, in amounts in bank checks, in handwritten fields, in forms etc. Algorithms of preprocessing, character and word recognition, and performance with practical system are indicated. The comparision has been made among Radial Basis Function (RBF) and Rajan Transform and found to be better compared to that of rate in the proposed system lies between 98% to 100%. © EuroJournals Publishing, Inc. 2011.
Sriram C.,Gurunanak Institute of Technology |
Kumar D.R.,VNR Vignana Jyothi Institute of Engineering and Technology |
Raju G.S.,VNR Vignana Jyothi Institute of Engineering and Technology
2014 International Conference on Smart Electric Grid, ISEG 2014 | Year: 2014
The power swing caused by various transient disturbances which exists only for a few seconds will affect the zone 3 distance relay behavior and may result in relay mal-operation. By improving the operation of zone 3 distance relays, it is possible to prevent mal-operations, so that the cascaded line tripping is avoided. This paper proposes a transient stability prediction based on polynomial curve fitting method. The novelty of the proposed method is that it accurately predicts the transient stability based on only few samples of fault data with solving computationally extensive electromechanical dynamics and also determine the optimal tripping time for zone 3 so that the relay will be block the tripping for stable power swings. Performance of the proposed scheme is evaluated on the IEEE 14 bus system and the results are presented in this paper. © 2014 IEEE.