In this paper we consider linear, lumped, finite networks composed of interconnections of time-variable and passive resistances, capacitances, inductances ~ gyrators and transformers. We assume an impedance matrix port description of the network is given and solve the problem of synthesizing the impedance, that is, we determine a set of passive elements and a scheme of interconnection which yie...

The solid component of the tectorial membrane (TM) is a porous matrix made up of the radial collagen fibers and the striated sheet matrix. The striated sheet matrix is believed to contribute to shear impedance in both the radial and longitudinal directions, but the molecular mechanisms involved have not been determined. A missense mutation in Tecta, a gene that encodes for the α-tectorin protei...

This paper provides algebraic criteria for the number of inductors and capacitors which must be present in a realisation of a given electrical impedance function. The criteria are expressed in terms of the rank and signature of the associated Hankel, or Sylvester, or Bezoutian matrix, or equivalently in terms of an extended Cauchy index.

In this paper we consider linear, lumped, finite networks composed of interconnections of time-variable and passive resistances, capacitances, inductances, gyrators and transformers. We assume an impedance matrix port description of the network is given and solve the problem of synthesising the impedance, that is, we determine a set of passive elements and a scheme of interconnection which yiel...

different amounts of nanoclay were incorporated into the acrylic resin matrix at 0, 1, 3, and 5 wt.% loadings. the coatings were applied on low carbon steel plates. optical microscopy, sedimentation test, transmission electron microscopy, and x-ray diffraction were employed to investigate the dispersion of nanoclay in matrix. the corrosion resistance of coatings was evaluated by electrochemical...

Sameer Hemmady , Xing Zheng , James Hart , Thomas M. Antonsen Jr. , Edward Ott 1,2,3 and Steven M. Anlage . Department of Physics, University of Maryland, College Park, MD 20742-4111, U.S.A. [Dated: July 10 , 2006]. Abstract: Statistical fluctuations in the eigenvalues of the scattering, impedance and admittance matrices of 2-Port wave-chaotic systems are studied experimentally using a chaotic ...

A big challenge in studying organic rich shale is to predict its kerogen content and maturity from indirect observations. Kerogen maturation changes shale texture; for example, it generates microcracks and fractures in the matrix. Assessment of maturity from indirect measurements can be greatly enhanced by exploiting any existing correlations between physical properties, microstructure, and ker...

Electrochemical impedance spectroscopy and gravimetric methods were carried out to analyze water uptake of thin polyurethane films separately filled with either hydrophobic or hydrophilic nano-silica. Correspondingly the impedance spectra and gravimetric data were interpreted in terms of movement of water within the coating and/or to the coating/metal interface. Although the obtained results fr...

Harmonics have become an important issue in modern power systems. The widespread penetration of non-linear loads to emerging power systems has turned power quality analysis into an important operation issue under both steady state and transient conditions. This paper employs an Extended Harmonic Domain (EHD) based framework for dynamic analysis of long term analysis over voltages during the tra...