In this paper, a new concept on PI design for time delay systems is introduced. The concept is weighted geometrical center of the stabilizing controller parameters region. Calculating of the stabilizing control parameters region is based on plotting the stability boundary locus in the (kp, ki) plane and then computing stabilizing values of the parameters of a PI controller. The weighted geometr...

The performance of carbon nanotube-based transistors is analyzed numerically, employing the non-equilibrium Green’s function formalism. The effect of geometrical parameters on the device performance is investigated. Our results clearly show that device characteristics can be optimized by appropriately selecting geometrical parameters. 2007 Elsevier Ltd. All rights reserved.

Description: Tables of cartesian coordinates optimized at MP2 level and the total energies computed at CCSD(T) level of all species mentioned in the text and influence of basis sets Table S-I. Selected geometrical parameters a for structures 1-10 calculated with different theoretical methods Structure Geometrical parameters b HF MP2 BP86 B3LYP

the one-dimensional model of lippincott and schroeder for hydrogen bond has been re-examined and it has been shown that o-h bond distance depends on repulsive van der waals and attractive electrostatic potentials.it has been shown that constant b in the van der waals repulsion potential is not transferable to all hydrogen bonds. the possibility of obtaining the semi-empircal parameters in the l...

In this paper we look at the problem where we have two mixed sets of data on the same scatter plot. We want to calculate linear regression lines for each of the two sets, but first of all we need to decide which data belong to which set. We propose one possible solution to this problem involving data classification and parameters estimation.

Several investigations performed in the last two decades have unveiled that geometrical parameters of protein backbone show a remarkable variability. Although these studies have provided interesting insights into one of the basic aspects of protein structure, they have been conducted on globular and water-soluble proteins. We report here a detailed analysis of backbone geometrical parameters in...

Structural health monitoring is a prominent alternative to the scheduled maintenance of safety-critical components. The nondispersive nature as well as the through-thickness mode shape of the fundamental shear horizontal guided wave mode (SH 0 ) make it a particularly attractive candidate for ultrasonic guided wave structural health monitoring. However, plane wave excitation of SH 0 at a high l...