University of Technology & Management of India

Shillong, India

University of Technology & Management of India

Shillong, India
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Acharjee D.,University of Technology & Management of India | Mukherjee A.,Kolkata | Mandal J.K.,Kalyani University | Mukherjee N.,Jadavpur University
Microsystem Technologies | Year: 2015

Mobile phone is becoming a very popular tool due to having various user friendly applications with all flexible options. It is highly popular for its light weight, wearable and comfortable uses. Many extrinsic habitat of human being can be monitored by the help of inbuilt sensors and its application software. This has appealing use for healthcare applications using exploitation of Ambient Intelligence for daily activity monitoring system. Here, a standard dataset of UCI HAR (University of California, Irvine, Human Activity Recognition, http://archive.ics.uci.edu) is used for analysis purpose. Naive Bayes Classifier is used for recognition of runtime activities minimizing dimension of large feature vectors. Threshold based condition box is designed by us and finally these two results are compared with that of another classifier HF-SVM (Hardware Friendly-Support Vector Machine) of previous related work. © 2015 Springer-Verlag Berlin Heidelberg


Banerjee R.,University of Technology & Management of India | Padmanaban E.,CSIR - Central Electrochemical Research Institute | Dana S.K.,CSIR - Central Electrochemical Research Institute
Pramana - Journal of Physics | Year: 2015

A design of coupling is proposed to control partial synchronization in two chaotic oscillators in a driver-response mode. A control of synchrony between one response variables is made possible (a transition from a complete synchronization to antisynchronization via amplitude death and vice versa without loss of synchrony) keeping the other pairs of variables undisturbed in their pre-desired states of coherence. Further, one of the response variables can be controlled so as to follow the dynamics of an external signal (periodic or chaotic) while keeping the coherent status of other variables unchanged. The stability of synchronization is established using the Hurwitz matrix criterion. Numerical example of an ecological foodweb model is presented. The control scheme is demonstrated in an electronic circuit of the Sprott system. © Indian Academy of Sciences.


Hens C.R.,CSIR - Central Electrochemical Research Institute | Banerjee R.,CSIR - Central Electrochemical Research Institute | Banerjee R.,University of Technology & Management of India | Feudel U.,Carl von Ossietzky University | Dana S.K.,CSIR - Central Electrochemical Research Institute
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics | Year: 2014

In this Reply we answer the two major issues raised by the Comment. First, we point out that the idea of constructing extreme multistability in simple dynamical systems is not new and has been demonstrated previously by other authors. Furthermore, we emphasize the importance of the concept of a conserved quantity and its consequences for the dynamics, which applies to all the examples in the Comment. Second, we show that the design of controllers to achieve extreme multistability in coupled systems is as general as described in Phys. Rev. E 85, 035202(R) (2012)PLEEE81539-375510.1103/PhysRevE.85.035202 by providing two examples which do not lead to a master-slave dynamics. © 2014 American Physical Society.


PubMed | Carl von Ossietzky University, CSIR - Central Electrochemical Research Institute and University of Technology & Management of India
Type: Comment | Journal: Physical review. E, Statistical, nonlinear, and soft matter physics | Year: 2014

In this Reply we answer the two major issues raised by the Comment. First, we point out that the idea of constructing extreme multistability in simple dynamical systems is not new and has been demonstrated previously by other authors. Furthermore, we emphasize the importance of the concept of a conserved quantity and its consequences for the dynamics, which applies to all the examples in the Comment. Second, we show that the design of controllers to achieve extreme multistability in coupled systems is as general as described in Phys. Rev. E 85, 035202(R) (2012) by providing two examples which do not lead to a master-slave dynamics.


Pal P.,National Institute of Technology Durgapur | Debroy S.,National Institute of Technology Durgapur | Mandal M.K.,National Institute of Technology Durgapur | Banerjee R.,University of Technology & Management of India
Nonlinear Dynamics | Year: 2015

We present a design of coupling to achieve targeted synchronization in two parameter mismatched chaotic discrete dynamical systems. The coupling design is of open-plus-closed-loop type for which a suitable stability criterion is derived. Numerically the proposed coupling design is illustrated using the 1D logistic map, 2D and 3D Henon maps. Experimental realization of the targeted coherent dynamics is presented using 1D logistic map. © 2014, Springer Science+Business Media Dordrecht.


Bhattacharya D.,University of Technology & Management of India | Talukdar J.,University of Technology & Management of India
International Journal of Applied Engineering Research | Year: 2015

This paper focuses on a cooperative environment in wireless ad hoc networks, there is no infrastructure for Manets. Nodes can be able to communicate with another node and transfer information between them in a peer-peer fashion. An effective way of query/response propagation algorithm to avoid network collusion since there is interference with server. In this Eureka, Information Density concept is introduced here interference with server. Using Eureka, Information Density concept is introduced here. In this process, Gateway is used where all files are stored in it. First file requested by the peer is forwarded to the Gateway. The file transfer takes place in the form of chunks from the Gateway to the peer. The chunk sequence number is informed to all peers by the Gateway at the time of file transfer.During delivery of file, if any chunk is missing, peers forward the request to another peer group which has more Information Density. In this way, Missing chunk is retrieved for the peer based on the Eureka solution. © Research India Publications.


Singla A.,University of Petroleum and Energy Studies | Garg R.,University of Petroleum and Energy Studies | Saxena M.,University of Technology & Management of India
International Journal of Manufacturing, Materials, and Mechanical Engineering | Year: 2016

A 356 alloy reinforced with insitu V2O5 particles by using stir casting technique. The composites were produced by the addition of oxide particles in different weight percentage. The effect of oxide powder addition on microstructure and mechanical properties of produced composites were investigated. The effect of heat treatment on microstructure and mechanical properties were investigated by optical microscope, Microhardness tester and tension test. A significant improvement in hardness and tensile strength was revealed in the produced composite as compared to the base alloy. With the addition of oxide particles, the shape and size of eutectic Si changed which in turn affects the properties. It was observed that 2h solutionizing followed by the artificial aging was sufficient to make the structure homogenize and to produce the hardening precipitates. The improvement in the mechanical properties has been observed due to the age hardening precipitates in addition with refinement of insitu V2O5 particles. © Copyright 2016 IGI Global.


Kurre S.K.,University of Petroleum and Energy Studies | Pandey S.,University of Petroleum and Energy Studies | Garg R.,University of Petroleum and Energy Studies | Saxena M.,University of Technology & Management of India
Biofuels | Year: 2015

Conditioning monitoring is constantly helpful in scheduling maintenance activity and deciding the oil drain period for engines to ascertain the highest performance. Conditioning monitoring assures increased availability, higher design efficiency, and reduced maintenance cost. In the present work, experiments were performed on two identical single-cylinder engines by running them for 144 hours at a constant speed of 1500 rpm. The first engine was fueled with butanol blended fuel and the second with neat diesel fuel. Three samples of engine oil from each engine were collected after 48, 96, and 144 hours respectively. The engine oil (multigrade servo 20W-40) samples were examined to determine the condition of the engine by two methods: wear metal analysis; and physical and chemical tests. The wear metal analysis was monitored by the ICE 3000 series atomic absorption spectrometer. The viscosity was measured using the Anton Paar Rheolab QC rheometer at a constant speed of 1200 rpm and 40 °C temperature and the total acid number was measured by the titration method. The metal wear, total acid number, and viscosity in the butanol-fueled engine were slightly greater than those of the diesel-fueled engine. © 2015 © 2015 Taylor & Francis.


Chakraborty M.,Saha Institute of Nuclear Physics | Zeen Devi H.,University of Technology & Management of India | Ghosal A.,Saha Institute of Nuclear Physics
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2015

We investigate scaling ansatz with texture zeros within the framework of linear seesaw mechanism. In this variant of seesaw mechanism a simplified expression of effective neutrino mass matrix mν containing two Dirac type matrices (mD and mDS) and one Majorana type matrix (mRS) is obtained by virtue of neglecting the global U(1)L symmetry breaking term in the mass term of the Lagrangian. Along with the charged lepton mass matrix, the matrix mRS, too, is chosen in a diagonal basis whereas a scaling relation is incorporated in mD and mDS with different scale factors. Our goal in this work is to achieve a completely phenomenologically acceptable mν generated by combinations of mD and mDS containing least number of independent parameters or maximum number of zeros. At the end of the numerical analysis it is found that number of zeros in any of the constituent Dirac type matrices (mD and mDS) of mν cannot be greater than six in order to meet the phenomenological requirements. The hierarchy obtained here is normal and also the values of the two parameters sum mass (∑mi) and |mνee| are below the present experimental lower limit. © 2014 The Authors.


Bhattacharya D.,University of Technology & Management of India | Kumar T.,University of Technology & Management of India
International Journal of Applied Engineering Research | Year: 2014

This paper proposes a Design of an Embedded Charge Control Unit and analysis of pre-feasibility study for rural telephony Base Transceiver Stations, where the various renewable energy sources are used to power the BTS. Photovoltaic Solar/Wind based Hybrid Power energy connected to a common bus with battery storage and conventional back up sources to supply the Telephone base station. This paper mainly focused on two things. First is the design of charge control unit for the Hybrid energy system and second is the pre-feasibility study for a selected location using HOMER. To enhance the Hybrid power system efficiency several operating modes have been developed. © Research India Publications.

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