Techno India Salt Lake

Kolkata, India

Techno India Salt Lake

Kolkata, India
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Saha S.,Jadavpur University | Rudra S.,Techno India Salt Lake | Dasgupta T.,Jadavpur University | Maitra M.,Jadavpur University
2016 IEEE Uttar Pradesh Section International Conference on Electrical, Computer and Electronics Engineering, UPCON 2016 | Year: 2017

This paper presents the development of a novel adaptive backstepping sliding mode control law for temperature control of an industrial heat exchanger system. Backstepping control law has been utilized during the design of reaching mode of the sliding mode controller to ensure a smoother convergence towards sliding surface. However, in order to mitigate the problems of over-conservative approach of robust design, an adaptive mechanism has also been incorporated to find out the appropriate value of the disturbance bound. The proposed control law is robust against the effects of model uncertainties and can address the issues related to tracking problem of a non-minimum phase nonlinear systems. It has been devised in such a generalized manner that it can be used to address the control problem of any other non-minimum phase nonlinear systems. © 2016 IEEE.


Singh M.,Institute of Engineering & Management | Sardar A.R.,Techno India Salt Lake | Majumder K.,Maulana Abul Kalam Azad University of Technology | Sarkar S.K.,Jadavpur University
IETE Journal of Research | Year: 2017

Unrealistic trusted environment is the basis upon which sensor network's safety measures are built. The existing trust models for wireless sensor networks (WSNs) are not suitable for resource supplies and have high computation overhead. Our model, a lightweight trust mechanism and overhead analysis for clustered WSN (LWTM) has been designed on the dynamic nature of actual trust-building mechanism in order to meet the resource limitations of tiny sensor nodes. Here, a general framework of a realistic trust model for a large-scale clustered WSN is presented with a focus on protecting such system from various malicious attacks. In order to detect the malicious behaviour of nodes, malicious nodes up to 50% of total 500 nodes are intentionally incorporated in the proposed network. A trust metrics has been introduced here to highlight the important tasks of a sensor node. Metrics are divided into separate priority groups for assigning different importance levels. A dynamic trust updating algorithm based on the trust metrics priority of the parameters for rewarding or penalizing the trust values of the nodes is also proposed to assure sudden drop and gradual rise of trust. In addition to this, to avoid misjudgement of aggregated trust calculation, a self-adaptive weighted method is also defined for trust aggregation. On the model, to minimize the computational overhead through extensive simulation, we have shown that our trust model has less communication and storage overhead as compared to other two contemporary trust models such as GTMS and LDTS. The proposed trust model also provides better resilience against vulnerabilities. The feasibility of our trust model has been tested with MATLAB. © 2017 IETE


Naguri K.,Jadavpur University | Sil P.,Techno India Salt Lake | Mukherjee N.,Jadavpur University
2015 17th International Conference on E-Health Networking, Application and Services, HealthCom 2015 | Year: 2015

In this paper, we studied different issues related to storing and retrieval of health data. A data model is discussed for storing health records keeping in mind popular national and international standards of Electronic Health Records. The data model is then mapped to a big data solution, namely Cassandra. The mapping is done on the basis of a predetermined set of queries. Next, each of the queries is executed with varying datasizes and performance of the queries is observed. © 2015 IEEE.


Baidya S.S.,Techno India Salt Lake | Bhattacharyya C.K.,Techno India Salt Lake
Proceedings of the International Conference on Sensing Technology, ICST | Year: 2012

In Wireless Sensor Networks deploying a sensor node ensuring full coverage with connectivity is a real challenge. It is extremely difficult to find an optimal node deployment strategy that can minimize cost, and communicate on overhead and provide a high degree of coverage with network connectivity. In this paper we have made a comparative study to reach an optimum deployment solution using a layered deployment model. We have also presented the trade-offs between optimal coverage and optimal connectivity topology and their mathematical foundations. The simulation results verify the mathematical calculations. © 2012 IEEE.


Maity S.,Techno India Salt Lake | Debnath U.,Bengal Engineering and Science University
Astrophysics and Space Science | Year: 2013

In this work, we have considered different candidates of dark energy such as tachyonic field, DBI-essence, hessence, k-essence and dilaton dark energy in the framework of f-essence cosmology and investigated the consequences for their co-existence. Also we have reconstructed the potential functions and the scalar fields in this scenario. The potential function can be directly obtained in terms of fermionic kinetic term and fermionic Lagrangian density. © 2013 Springer Science+Business Media Dordrecht.


Maity S.,Techno India Salt Lake | Debnath U.,Indian Institute of Science
International Journal of Theoretical Physics | Year: 2016

In this work, we consider a non-flat universe in the framework of fractal cosmology. We have investigated the co-existence of different kinds of dark energy models such as tachyonic field, DBI-essence, hessence, k-essence, dilaton, quintessence with the modified Chaplygin gas (MCG) in fractal universe and obtained the statefinder parameters. The natures of the scalar fields and the concerned potentials have been analyzed by the correspondence scenario in the fractal universe. © 2016, Springer Science+Business Media New York.


Maity S.,Techno India Salt Lake | Debnath U.,Bengal Engineering and Science University
International Journal of Theoretical Physics | Year: 2013

In this work, we have assumed the modified Lagrangian of non-linear electrodynamics for accelerated universe. The energy density and pressure for non-linear electromagnetic theory have been considered in terms of both electric and magnetic fields. The Einstein's filed equations have been considered in FRW universe for Hořava-Lifshitz gravity. Since we are considering the non-linear form of Lagrangian for accelerating universe, so four forms of scale factors like logamediate, intermediate, emergent and power law forms are chosen in our investigation. For every expansion, the natures of electric field and magnetic field have been shown through graphical representation. The electric and magnetic fields increase for logamediate, intermediate and emergent expansion and decrease in power law expansion. © 2013 Springer Science+Business Media New York.


Maity S.,Techno India Salt Lake | Debnath U.,Indian Institute of Science
International Journal of Theoretical Physics | Year: 2016

In this work, we consider a non-flat universe filled with Fermionic field. First, we have considered the holographic dark energy and new agegraphic dark energy in the framework of F-essence cosmology and investigated the consequences for their co-existence. The correspondence of F-essence with the above types of dark energy models have been investigated. The natures of K and Y for these correspondence of F-essence with the above dark energies have been analyzed. © 2015, Springer Science+Business Media New York.


Debnath U.,Bengal Engineering and Science University | Maity S.,Techno India Salt Lake
European Physical Journal Plus | Year: 2014

In this work, we have considered generalized cosmic Chaplygin gas (GCCG) and new variable modified Chaplygin gas (NVMCG) types of dark energies in the framework of F -essence cosmology and investigated the consequences for their co-existence. The correspondence of the F -essence with the above types of Chaplygin gas models has been investigated. The natures of K and Y for this correspondence of the F -essence with all the gases have been analyzed graphically. From the graphical representation, we demand that K always increases with Y due to correspondence, and the EoS parameter w shows that the F -essence model always gives only quintessence type of dark energy and phantom crossing does not happen in our constructed models. © 2014, Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg.


Maity S.,Techno India Salt Lake | Debnath U.,Indian Institute of Science
International Journal of Theoretical Physics | Year: 2015

In this work, we have considered non-flat FRW universe filled with dark matter (with non-zero pressure) and generalized dark energy (GDE) as motivated by the work of Sharif et al. (Mod. Phys. Lett. A 28, 1350180, 2013). Also the dark matter and the dark energy are considered to be interacting. The energy density, pressure and the EoS of the GDE have been calculated for the interacting scenario. For stability analysis of this model, we have also analyzed the sign of square speed of sound. Next we investigate the correspondence between GDE and different other candidates of dark energies such as DBI-essence, tachyonic field, hessenc and electromagnetic field. Also we have reconstructed the potential functions and the scalar fields in this scenario. © 2015, Springer Science+Business Media New York.

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