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Halder B.,Mallabhum Institute of Technology | Garain U.,Indian Statistical Institute
Proceedings - International Conference on Pattern Recognition | Year: 2010

Answering to a query like when a particular document was printed is quite helpful in practice especially forensic purposes. This study attempts to develop a general framework that makes use of image processing and pattern recognition principles for ink age determination in printed documents. The approach, at first, computationally extracts a set of suitable color features and then analyzes them to properly associate them with ink age. Finally, a neural net is designed and trained to determine ages of unknown samples. The dataset used for the present experiment consists of the cover pages of LIFE magazines published in between 1930's and 70's (five decades). Test results show that a viable framework for involving machines in assisting human experts for determining age of printed documents. © 2010 IEEE. Source


Roy B.,National Institute of Technology Durgapur | Bhattacharya A.,Mallabhum Institute of Technology | Bhattacharjee A.K.,National Institute of Technology Durgapur | Chowdhury S.K.,Jadavpur University
2015 International Conference on Electronic Design, Computer Networks and Automated Verification, EDCAV 2015 | Year: 2015

In this paper a novel wideband spade-shaped monopole antenna with ring geometry is designed for several wideband microwave applications. The antenna is designed in CST Microwave Studio Suite™ environment. Round Slot Geometry is applied in design of the patch structure. The finalized monopole is proposed to be applicable in the microwave frequency band from 4.2 GHz to 12.2 GHz. The antenna exhibits a gain of 3.4 dBi, 3.5 dBi, 3.7 dBi, 3.8 dBi, 4.6 dBi and 1.9 dBi at frequencies 5 GHz, 5.2 GHz, 5.5 GHz and 5.8 GHz, 10 GHz and 12 GHz respectively. The antenna exhibits a wide bandwidth of 8 GHz (4.2 GHz to 12.2 GHz). © 2015 IEEE. Source


Roy B.,National Institute of Technology Durgapur | Bhattacharya A.,Mallabhum Institute of Technology | Bhattacharjee A.K.,National Institute of Technology Durgapur | Chowdhury S.K.,Jadavpur University
9th International Conference on Industrial and Information Systems, ICIIS 2014 | Year: 2015

In this paper an Ultra Wideband Monopole antenna is designed for various WLAN and WiMAX applications. The antenna is designed using CST Microwave Studio Suite™. Iterative patch structures are considered to obtain optimized result. The finalized monopole is proposed to be applicable in the WLAN bands (5.2/5.8 GHz) and WiMAX bands (3.5/5.5 GHz). The antenna exhibits a gain of 2.9 dB, 3.7 dB, 3.8 dB and 4.0 dB at frequencies 3.5 GHz, 5.2 GHz, 5.5 GHz and 5.8 GHz respectively. The antenna exhibits a wide bandwidth of 3.5 GHz to 7 GHz respectively. © 2014 IEEE. Source


Bhattacharya A.,Mallabhum Institute of Technology
Lecture Notes in Electrical Engineering | Year: 2014

This paper introduces an analytical approach to study the behaviour of Defected Patch Structures. More specifically the effect of addition of a U-Shaped slot to a Microstrip Patch. Roger 4003 has been chosen as the substrate material for the proposed antenna which has electrical permittivity of 3.4. In the initial section a probe fed rectangular patch has been simulated, which is followed by the addition of the U-Shaped slot. The dimensions of the Patch as well as that of the Slot have been selectively chosen to generate optimum results. © 2014 Springer. Source


Mondal S.,Mallabhum Institute of Technology | Chakraborty S.,Jadavpur University
Journal of the Institution of Engineers (India), Part PR: Production Engineering Division | Year: 2011

The present competitive environment in global market has forced the manufacturing organizations to reduce costs while improving the quality of products and responsiveness to the customers. Flexible manufacturing systems (FMS) offer opportunities to those organizations to improve their technology, competitiveness and profitability through a highly proficient and focused approach to manufacturing effectiveness. The decision makers often face the problem of selecting the most appropriate FMS for a given manufacturing organization. This paper attempts to solve this FMS selection problem in two steps. The first step is used to identify and shortlist the most efficient alternative flexible manufacturing systems having better performance characteristics using the Charnes, Cooper and Rhodes (CCR) model of data envelopment analysis (DEA). Then, the weighted overall efficiency ranking method of multi-attribute decision-making (MADM) theory is employed to determine the best FMS from the shortlisted ones. The results match well with those obtained by the past researchers. Source

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