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1

Secure energy efficient routing protocol for wireless sensor network

Das A. K, Chaki R., Dey K. N.

Foundations of Computing and Decision Sciences

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2016

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Vol. 41, No. 1

3--27

EN

The ease of deployment of economic sensor networks has always been a boon to disaster management applications. However, their vulnerability to a number of security threats makes communication a challenging task. This paper proposes a new routing technique to prevent from both external threats and internal threats like hello flooding, eavesdropping and wormhole attack. In this approach one way hash chain is used to reduce the energy drainage. Level based event driven clustering also helps to save energy. The simulation results show that the proposed scheme extends network lifetime even when the cluster based wireless sensor network is under attack.

2

A mathematical model for blood flow through straight artery of slightly non-circular cross-section

Poria S., Dey K. N., Mazumdar H. P.

International Journal of Applied Mechanics and Engineering

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2009

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Vol. 14, no 1

261-275

EN

In this paper, a model is presented for investigating some hydrodynamic characteristics of blood flow through a large arterial vessel of slightly non-circular cross section. The viscosity of blood is assumed non-uniform due to a distribution of erythrocytes (red cells). The effects of such variation of viscosity on the hydrodynamic flow characteristics, e.g., velocity profiles, volumetric flow rate and shear stress distribution are investigated. These characteristics are then compared with the similar results obtained for the case of blood flow through the corresponding tube of circular cross section.

3

On the peristaltic transport of a micropolar fluid

Dey K. N., Poria S., Mazumdar H. P.

Engineering Transactions

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2005

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Vol. 53, iss. 1

3-14

EN

In this paper, we study some characteristics of the peristaltic motion of an incompressible micropolar fluid through a circular cylindrical tube. Many authors have investigated the peristaltic motion of non-Newtonian or viscoelastic fluid through a channel or tube due to the relevance of peristaltic action in both mechanical and physiological situations. For example, peristaltic mechanism may be involved in vasomotion of small blood vessels. Here the microstructural effects on the pressure rise, average flow and friction force are investigated.