Pradip K. Das

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Energy efficiency is a much talked about thing in the domain of geocast routing protocols for Wireless Ad Hoc and Sensor Networks (WASNs). Fermat point based protocols are capable of reducing the energy consumption of a WASN by reducing the total transmission distance in a multi hop-multi sink scenario. Presently, there are quite a handful of them but many(More)
Energy consumption and delay incurred in packet delivery are the two important metrics for measuring the performance of geographic routing protocols for Wireless Adhoc and Sensor Networks (WASN). A protocol capable of ensuring both lesser energy consumption and experiencing lesser delay in packet delivery is thus suitable for networks which are delay(More)
There has been considerable amount of work done in exploring the acoustic correlates of nasalized and non-nasalized vowels in the frequency domain. Nasalized vowels are characterized by the presence of extra pole-zero pairs near the first formant region and across the spectrum. Several other automatically extractable acoustic features have been proposed by(More)
In the early networks, meant for geographically distributed systems, flow control for relieving congestion and prevention of deadlock were achieved by “Isarithmic Control”, “Buffer Storage Control” and other means [1,3]. Deadlock in a concurrent message-passing computer system [2,6] occurs when no message can advance through the interconnection network(More)
Automatic speech recognition by machine is one of the most efficient methods for man-machine communications. Because speech waveform is nonlinear and variant. Speech recognition requires a lot of intelligence and fault tolerance in the pattern recognition algorithms. Accurate vowel recognition forms the backbone of most successful speech recognition(More)
Knowledge Discovery in Databases (KDD) has evolved into an important and active area of research because of theoretical challenges and practical applications associated with the problem of discovering (or extracting) interesting and previously unknown knowledge from very large real-world databases. Rough Set Theory (RST) is a mathematical formalism for(More)
Geocasting is a special variant of multicasting, where a data packet is destined for a particular geographic region. For many applications in wireless ad hoc and sensor networks, geocasting is an important and widely used communication service. Many geocast routing protocols with different approachability have been developed. Amongst them the geometry(More)