Volume-1 Issue-1

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Volume-1 Issue-1

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Volume-1 Issue-1, November 2012, ISSN:  2319–6378 (Online)
Published By: Blue Eyes Intelligence Engineering & Sciences Publication Pvt. Ltd. 

Page No.



Kotaprolu Nanda Kishore, Vakkalagadda Prasad, Mada Yaswanth Manikanta, T.Ravi, Anup VSAP Josyula

Paper Title:

Optimised Design Of Dual-Band Cellular Repeater At  Different Frequency Bands (GSM 1800/ DCS, 3G)

Abstract: The intended application of our Cellular Repeater is a system of duplex reception, amplification and transmission used to enhance uplink(UL) and downlink(DL) signals in areas of low signal coverage i.e.; for the situations where signal quality between the base station and the receiver is poor and communication fails. This will be helpful for cellular providers to rectify the problems of poor signal service. This Dual band Cellular Repeater consists of Bidirectional amplifier, receiving and transmitting antennas. This paper discusses our assembling process, beginning with component selection and our difficulty in obtaining the required gain according to the user requirement in the process of testing. This cellular repeater can be operated in 2 different operating frequency bands namely, GSM 1800/DCS and 3G. The operation of the repeater can be switched between the two bands depending on the user requirement using a duplexer which provides proper switching among the bands. This model helps a lot in providing efficient signal service in the weaker coverage areas in the specified band of frequency.

 Bi-Directional Amplifier (BDA), Yagi-Uda antenna, Patch panel antenna, power amplifier, GSM 1800/DCS, 3G


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Aswathy.Ravikumar, Saritha.R

Paper Title:

An Improved Statistical Model for Protein Secondary Structure Prognostication

Abstract: Genome sequencing projects continue to provide a flood of new protein sequences. Recently there have been advances in protein structure prognostication which in turn has improved fold recognition algorithms. Predicting the secondary structure of proteins is important in biochemistry because the 3D structure can be determined from the local folds that are found in secondary structures. Moreover, knowing the tertiary structure of proteins can assist in determining their functions. The problem of protein secondary structure prognostication with Hidden Markov Models is addressed here. Sequence family information is integrated via the combination of independent predictions of homologous sequences and a weighting scheme.  Hidden Markov models were built for a representative set of just over 1,000 structures from the Protein Data Bank (PDB). The topology of the HMM was restricted to biologically meaningful building blocks.

 HMM, protein structure, Markov Process


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