This paper deals with data processing technology to easily construct a computer model (a CAD model) with high quality surfaces from the shape data of a roughly created physical model. The position vectors and the unit normal vectors of discrete points on the rough physical model are obtained as measured data and are processed with the least square method based on quadratic surface approximation...

n this paper, we consider continuity properties(especially, regularity, also viewed as an approximation property) for $%mathcal{p}_{0}(x)$-valued set multifunctions ($x$ being a linear,topological space), in order to obtain egoroff and lusin type theorems forset multifunctions in the vietoris hypertopology. some mathematicalapplications are established and several physical implications of thema...

An improved analytical model for IGB power transistors has been developed for circuit simulators. Special attention is paid to the physical modeling of the short channel in the DMOS branch and the buffer layer near the anode in IGBT device structures. Good agreement between simulated and measured data has been obtained.

The emergence of WiMAX has attracted significant interests from all the fields of wireless communications including students, researchers, systems engineers and operators. WiMAX has been tipped to bring a revolution in the way we use broadband services today. The WiMAX can also be considered to be the main technology in the implementation of other networks like wireless sensor networks. Develop...

The output resistance (hut) is one of the most important device parameters for analog applications. However, it has been difficult to model hut correctly. In this paper, we present a physical and accurate output resistance model that can be applied to both long-channel and submicrometer MOSFETs. Major short channel effects and hot-carrier effect, such as channel-length modulation (0 [l], drain-...

In this paper, we will first introduce physical verification of Very Large Scale Integration (VLSI) circuits and put the challenges in perspective from a computational electro-magnetics point of view. We argue that any models obtained from electromagnetic (electrostatic) analysis should be as simple as possible for a given accuracy. We will then focus on two aspects of VLSI physical verificatio...

We recently proposed a phase-sensitive x-ray imaging method called multiple-image radiography (MIR), which is an improvement on the diffraction-enhanced imaging technique. MIR simultaneously produces three images, depicting separately the effects of absorption, refraction and ultra-small-angle scattering of x-rays, and all three MIR images are virtually immune to degradation caused by scatterin...

Cracks creation in solids can be accompanied by electromagnetic emission (EME). On the faces of new created crack electric charges constitute electric dipole system and due to crack walls vibration an EME signal is detected with frequency from 1 to 10 MHz corresponding to crack length 0.1 to 1 mm. The second source of EME signal is later activated due to whole sample mechanical vibrations with ...