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Single spin logic (SSL) is an embryonic field of low dimension (nano scaled) device research that employs spin degree of freedom in quantum dots. The intrinsic merits of Spintronics ushered substantial potential in articulating single spin logic devices only to replace its conventional CMOS counterpart. Eventually spin based research alike is predecessor technologies ventured in two distinctive arenas...
This work presents a finite element study of a perfectly elastic axisymmetric sinusoidal shaped asperity in contact with a rigid flat for different amplitude to wavelength ratios and a wide range of material properties. This includes characterizing the pressure required to cause complete contact between the surfaces. Complete contact is defined as when there is no gap remaining between two contacting...
This paper presents a modified maximum power point tracker (MPPT) for a standalone PV system. In this research a Particle Swarm Optimization (PSO)-based method is re-initialised by a variable step size (VSS) incremental conductance (IncCond) MPPT. The main motivation in this research is to eliminate the output ripple, and also to shorten the tracking time in rapidly changing insolation condition (RCIC)...
A scheme for on line fault detection in a power system is introduced in this paper. The scheme is based on the use of a sliding mode observer where an appropriate set of output measurements is utilized to detect the onset of faults in the transmission network of the power system in real time and on-line. The power system considered in this study comprises a generating unit connected to an infinite...
In this paper we propose an improved hierarchy based mobility management scheme THMIP (Three-level Hierarchical Mobile IP) using fluid flow model to reduce the signaling overhead for a frequently moving mobile node (MN) within its hierarchical domain. In this scheme, the MN sends the binding update to the Home Agent (HA) only for the first time when the Care of address (CoA) gets changed. From the...
The particle filter provides a general solution to the nonlinear filtering problem with arbitrarily accuracy. However, the curse of dimensionality prevents its application in cases where the state dimensionality is high. Further, estimation of stationary parameters is a known challenge in a particle filter framework. We suggest a marginalization approach for the case of unknown noise distribution...
Phase curve of an open loop system is flat in nature if the derivative of phase with respect to frequency is zero. With a flat phase curve, the corresponding closed-loop system exhibits an iso-damped property i.e. maintains constant overshoot with the change of gain and with other parametric variations. In recent past application, fractional order (FO) phase shapers have been proposed by contemporary...
This paper proposes a model for call admission control in the next generation wireless networks. It presents a prioritized call admission procedure using the combination of buffer and guard channel schemes applicable to the heterogeneous networks in general and wireless overlay network (WON) in particular call admission priority is given to the real time calls over the non-real time calls which are...
In this article, we propose a SMC based method for estimating the static parameter of a general state space model. The proposed method is based on maximizing the joint likelihood of the observation and unknown state sequence with respect to both the unknown parameters and the unknown state sequence. This in turn, casts the problem into simultaneous estimations of state and parameter. We show the efficacy...
MAP estimation is a good alternative to MMSE for certain applications involving nonlinear non Gaussian systems. Recently a new particle filter based MAP estimator has been derived. This new method extracts the MAP directly from the output of a running particle filter. In the recent past, a Viterbi algorithm based MAP sequence estimator has been developed. In this paper, we compare these two methods...
We investigate the basics of tensor based hypertext representation and perform experiments this novel hypertext representation model. Most documents have an inherent hierarchical structure that render the desirable use of multidimensional representations such as those offered by tensor objects. We focus on the advantages of Tensor Space Model, in which documents are represented using second-order...
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