rajib kumar - Academia.edu (original) (raw)

Papers by rajib kumar

Third International Conference on Advances In Civil, Structural and Environmental Engineering- ACSEE 2015, 2015

This is a hard hitting compilation of well evidenced and peer reviewed articles on a new take on ... more This is a hard hitting compilation of well evidenced and peer reviewed articles on a new take on industry challenges. One of the papers look at the issue of "Managing Crisis" at workplace. Managing Crisis mandates not just being appreciative of the strategic flavor of human resources management but a fuller understanding of the organization dynamic as well as the more complex and complicated supply chain of the organization and associated risks. The strategic ambitions of the supply chain can then be achieved with the human capital capabilities leading to lesser crises …the proverbial "black swan". Another paper attempts to underscore the importance of cross functional approach in modern business; consequently it makes a modest endeavor to unravel the behavioral dynamics of cross-functional engagement in business particularly from the point of view of new product development efforts through review of relevant literature. Another study aims to examine empirically ...

A noise map facilitates monitoring of environmental noise pollution in urban areas. It can raise ... more A noise map facilitates monitoring of environmental noise pollution in urban areas. It can raise citizen awareness of noise pollution levels, and aid in the development of mitigation strategies to cope with the adverse effects. However, state-of-the-art techniques for rendering noise maps in urban areas are expensive and rarely updated (months or even years), as they rely on population and traffic models rather than on real data. Participatory urban sensing can be leveraged to create an open and inexpensive platform for rendering up-to-date noise maps. In this paper, we present the design, implementation and performance evaluation of an end-to-end participatory urban noise mapping system called Ear-Phone. Ear-Phone, for the first time, leverages Compressive Sensing to address the fundamental problem of recovering the noise map from incomplete and random samples obtained by crowdsourcing data collection. Ear-Phone, implemented on Nokia N95 and HP iPAQ mobile devices, also addresses t...

Noise map can provide useful information to control noise pollution. We propose a people-centric ... more Noise map can provide useful information to control noise pollution. We propose a people-centric noise collection sys-tem called the Ear-Phone. Due to the voluntary participa-tion of people, the number and location of samples cannot be guaranteed. We propose and study two methods, based on compressive sensing, to reconstruct the missing samples.

blue arrow represents the incident X-ray whereas the violet one is the fluorescent X-ray. Differe... more blue arrow represents the incident X-ray whereas the violet one is the fluorescent X-ray. Difference in thickness of the lines stand for different intensity. Thickness Measurement of Nuclear Targets Using X-Ray Fluorescence Technique Arkabrata Gupta, Arna Ghosh, Rajib Kumar, Abhijit Bisoi*, and S. Sarkar Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, INDIA . * email: abijitbisoi@gmail.comemail: ss@physics.iiests.ac.in

Purpose: The objective of this study is preparation and evaluation of saquinavir mesylate oral su... more Purpose: The objective of this study is preparation and evaluation of saquinavir mesylate oral suspension. Method: The suspensions were prepared by 2 3 factorial designed, dispersion method in which solid phase was sieved, wetted and dispersed by glycerol into the 2% solution of xanthrol 150. The suspensions were subjected to dissolution test and from the experimental release curve in the 2h, the maximum release and the time to attain it were obtained. Result: For a given composition of the suspensions, the release curve was obtained by summation of the release from each formulation at the different time intervals. The release values of the formulation F8 was estimated 92.47% that were generally higher than all other formulations. Conclusion: The suspension were successfully prepared and evaluated against various parameters viscosity, particle size analysis and in vitro drug release. All parameters concluded that F8 formulation was suitable formulation.

História da Historiografia: International Journal of Theory and History of Historiography, 2018

Algunos usos de "Estado" en la historiografía del período de la "organización nacional" de Argent... more Algunos usos de "Estado" en la historiografía del período de la "organización nacional" de Argentina (1852-1880) Some uses of State in the historiography of the Argentinean period of national organization (1852-1880

IET Radar, Sonar & Navigation, 2018

This study presents a hybrid technique for polarimetric synthetic aperture radar (PolSAR) data de... more This study presents a hybrid technique for polarimetric synthetic aperture radar (PolSAR) data decomposition. The proposed technique aims to overcome the negative power problem of model-based decomposition methods. To achieve this, matrix rotation theory is used along with hybrid scattering models. The matrix rotation theory is utilised on the basis of underlying dominant scatterer to remove maximal of the cross-polarisation power generated by the coupling between orthogonal states of polarisation. Removing the coupling energy between orthogonal states not only optimised the PolSAR coherency matrix but also transform it more close to reflection symmetry condition. The applicability of the proposed approach is shown through the implementation of hybrid three- and four-component decomposition methods. The proposed hybrid methods are experimentally verified on C-band Radarsat-2 San Francisco and L-band UAVSAR Hayward datasets. For further analysis, different land-cover patches are selected. Moreover, the variations in percentage of negative power pixels are investigated by employing different volume scattering models. Comparative analyses are presented with existing PolSAR decomposition techniques in terms of normalised scattering power means and amount of negative power pixels. All experimental analyses clearly report the superiority of the proposed hybrid approach through improvements over existing PolSAR decomposition techniques along with non-negative scattering powers.

IOSR Journal of Mechanical and Civil Engineering, 2013

Proceedings of the 9th ACM/IEEE International Conference on Information Processing in Sensor Networks - IPSN '10, 2010

Proceedings of the 7th ACM Conference on Embedded Networked Sensor Systems - SenSys '09, 2009