In this paper, we revisit the concept of (normalized) closeness centrality a vertex in graph and investigate it some graphs under operations. Specifically, derive formulas that compute vertices shadow graph, complementary prism, edge corona, disjunction graphs.

The Corona Current in air gaps influences the values of the breakdown voltage of the air gaps greatly. This happens because the corona current changes the field distribution in the gap making it less inhomogeneous. Thus the value of the breakdown voltage increases and becomes bigger as the value of the corona current increases. A major result of this phenomenon is the appearance of the Polarity...

The use of electrical corona discharge opens broad possibilities for effective development of electrostatic precipitators (ESPs). The object of the work is the study of the corona discharge in different gases at high temperature / high pressure (HT/HP) conditions. The studies are carried out in a HT/HP ionizer in the pure synthetic air, N2, He and He-synthetic air and He-N2 gas mixtures. Corona...

State-space techniques are used for the computation of the surge response of a transmission line with corona. The transmission line is treated as the series connection of short line sections, and the effect of corona is represented in each section by a nonlinear (voltage dependent) capacitor-conductance branch. Surge response of the transmission line is obtained for various corona models by tak...

one of the locations of renal artery atherosclerosis is at the orifice of the renal artery, therefore thestructure of this orifice was assessed in 6 normal, adult male dogs by light microscopy (lm) andtransmission electron microscopy (tem). for the lm study, processed tissues were embedded in paraffinand sectioned serially into 6-μm thickness. sections were stained with orcein. for the tem stud...

Product graphs have been gainfully used in literature to generate mathematical models of complex networks which inherit properties of real networks. Realizing the duplication phenomena imbibed in the definition of corona product of two graphs, we define corona graphs. Given a small simple connected graph which we call basic graph, corona graphs are defined by taking corona product of the basic ...

A simplified frequency integrated radiative transfer equation is solved to study Compton scatterings in the corona of the disk by using numerical iterating method. We find that the vertical thickness of the corona cannot be used as the typical length to measure the optical depth of the corona. A semi-analytical approach is proposed to calculate the energy dissipations in the corona of the disk....