In this thesis, I studied the lensed quasar CX2201-3201, which is lensed by an edgeon spiral galaxy. The unusually high tilt of the spiral galaxy provides us with a rare opportunity for mass modeling. In addition, the unusual placement of the two visible images of the system offers an intriguing lensing system for study-the two images straddle the lensing galaxy's visible disk, but are off to o...

This paper is a further development of the approach to weak cosmic censorship proposed by the authors in Ref. [5]. We state and prove a modified version of that work’s main result under significantly relaxed assumptions on the asymptotic structure of space–time. The result, which imposes strong constraints on the occurrence of naked singularities of the strong curvature type, is in particular a...

ARTICLE HISTORY: Received 19 November 2015 Revised 22 December 2015 Accepted 27 December 2015 The Radar Cross Section of a target plays an important role in the detection of targets by radars . This paper presents a new method to predict the bistatic and monostatic RCS of coated electrically large objects. The bodies can be covered by lossy electric and/or magnetic Radar Absorbing Materials (RA...

Object detection plays an important role in successfulness of a wide range of applications that involve images as input data. In this paper we have presented a new approach for background modeling by nonconsecutive frames differencing. Direction and velocity of moving objects have been extracted in order to get an appropriate sequence of frames to perform frame subtraction. Stationary parts of ...

The characteristic-based finite-volume time-domain method is applied to analyze the scattering from conducting objects coated with lossy dielectric materials. Based on the characteristic-based finite-volume scheme, two numerical strategies are developed to model the electromagnetic propagation across different dielectric media. One introduces a connecting boundary to separate the total-field re...

We consider the three dimensional electromagnetic inverse scattering problem of determining information about a target buried in a known inhomogeneous medium from a knowledge of the electric and magnetic fields corresponding to time harmonic electric dipoles as incident fields. The scattering object is assumed to be an anisotropic dielectric that is (possibly) partially coated by a thin layer o...

objective(s): the wide scale use of zinc oxide nanoparticles (zno nps) in the consumer market world makes human beings more prone to the exposure to zno nanoparticles and its adverse effects. therefore, the aim of the present study is to assess renal toxicity potential of zno and polyethylene glycol coated zno nanoparticles in rat.materials and methods: co-precipitation chemical method was used...

We present a method to resolve components within a diffraction-limited object by tracking simultaneously the average axial positions of two different sets of fluorescent molecules within it. The axial positions are then subtracted from each other to determine the separation of the two sets of fluorophores. This method follows the dynamic changes in the separation of the two sets of fluorophores...

The size of endocytic clathrin-coated vesicles (CCVs) is remarkably uniform, suggesting that it is optimized to achieve the appropriate levels of cargo and lipid internalization. The three most abundant proteins in mammalian endocytic CCVs are clathrin and the two cargo-selecting, clathrin adaptors, CALM and AP2. Here we demonstrate that depletion of CALM causes a substantial increase in the ra...