We consider the inverse scattering problem of determining both the shape and some of the physical properties of the scattering object from a knowledge of the (measured) electric and magnetic fields due to the scattering of an incident time harmonic electromagnetic wave at fixed frequency. We shall discuss the linear sampling method for solving the inverse scattering problem which does not requi...

We study the magnetic coupling between a metal-coated near-field probe and a photonic crystal nanocavity. The resonance of the nanocavity shifts to shorter wavelengths when the ringlike apex of the probe is above an antinode of the magnetic field of the cavity. We show that this can be attributed to a magnetic light-matter interaction and is in fact a manifestation of Lenz's law at optical freq...

aim: injury from needle is one of the main ways of transmitting blood diseases in the medical staff. prevention and reduction of such diseases' side effects have been emphasized by the health ministry. this study aimed to investigate factors influencing the behavior of the elam city medical staff when working with sharps instruments. methods: in a cross-sectional study, using a census method, a...

Brane cosmologies with static, five-dimensional and Z2 symmetric bulks are analysed. A general solution generating mechanism is outlined. The qualatitive cosmological behaviour of all such solutions is determined. Conditions for avoiding naked bulk singularities are also discussed. The restrictions placed on the solutions by the assumption of such a static bulk are investigated. In particular t...

This paper presents an exploration of the design of a memory model to support the management of persistent historical memories recorded by a smart work object. Analysis of a range of potential application categories and scenarios involving a smart work object is used to highlight the requirements and different characteristics of digital memories. The analysis is then used to identify a range of...

We propose a transforming method of MPEG-4 contents in order to present the contents on PDA devices in this paper. The method reconstructs the mp4 file according to transforming a scene tree in MPEG-4 contents when the contents are authored. The method reduces the size of each object in a scene of the content for presenting it efficiently on the small interface of a PDA device, and transforms v...

I Zwicky 1 (I Zw 1) is the prototype narrow line quasar. Its narrow line profiles minimize blending effects and thus allow a significantly more accurate study of individual quasar emission lines. We report here the results of our study of the 1150-3250 Å emission of I Zw 1 using a high S/N (50-120) spectrum obtained with the Faint Object Spectrograph (FOS) of the Hubble Space Telescope (HST). T...

introduction one of the limitations of tissue conditioners (tc) is gradual hardening of the material in a short time period after insertion in the mouth, due to the loss of their viscoelastic properties. the aim of this study was to determine the softness of two different tissue conditioners with and without the monopoly coating. methods and materials in this experimental study, acropars and vi...