S. K. Basu

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Finding cluster head (CH) is an important issue in WSN. A new optimization algorithm Imperialist Competitive Algorithm (ICA) has been introduced recently, inspired by socio-political process of imperialistic competition. We use ICA for CH selection according to the communication energy (CE) cost. We demonstrate that ICA is an effective method for selection(More)
We present the results of our search to find the performance of the various spectrum based cost functions and the effect of varying its parameter in the design of strong S-Boxes. It is conjectured that good S-Boxes can be obtained, if the search is made with the parameters R &gt; 3.5 and X &lt; 2<sup>n/2</sup> and a more consistent performance can be(More)
This paper discusses a geometric and optical model for realistic realistic of plant leaves. We have used a model for deformable thin shells to represent the naturally curved shape of leaves and its dynamic reponse to impulse, shear and stress. The optical model uses a simple BRDF function , combined with a transparency map for each leaf. We show that we are(More)