This paper describes the effect of inserting a rectangular shape defected ground structure (DGS) into the ground plane of the conventional rectangular microstrip patch antenna (CRMPA). The performances of the CRMPA are characterized by varying the dimensions of the rectangular slot (RS-DGS) and also by locating the RS-DGS at specific position. Simulation results have verified that the CRMPA inc...

In this paper, we apply generalized sampling to imagebased rendering (IBR) data, more specifically, the lightfield. We show that in theory the lowest sampling rate of lightfield when we use generalized sampling can be as low as half of that when we use rectangular sampling. However, in practice rectangular sampling has several advantages over generalized sampling. We analyze the pros and cons f...

for maintaining of zagros forests role in wild life, water and soil conservation, the suitable solutions and methods for assessing the existing conditions and planning for management of this forests should be given. to detection of suitable sampling method to study tree density in the northern zagros forest, blake forest, in baneeh region, kurdistan province, and west of iran was selected. 40 s...

In this article, we derive the distribution of partially exchangeable binary random variables, generalizing the distribution of exchangeable binary random variables and hence the binomial distribution. The distribution can also be viewed as a mixture of Markov chains. We introduce rectangular complete monotonicity and show that partial exchangebility can be characterized by rectangular complete...

We find a type of normal domain in composite superconductors—a traveling rectangular domain. Using the effective circuit model we study in detail the dynamics of this domain. We derive an analytical solution for the propagation velocity and the length of a traveling rectangular domain. Current–voltage characteristics are calculated for a superconductor with a rectangular domain. © 1998 American...

Recently, Azam, Arshad and Beg [4] introduced the notion of cone rectangular metric spaces by replacing the triangular inequality of a cone metric space by a rectangular inequality. In this paper, we introduce the notion of c-chainable cone rectangular metric space and we establish a fixed point theorem for uniformly locally contractive mappings in such spaces. An example is given to illustrate...

A new characterization of row-monotone matrices is given and is related to the Moore-Penrose generalized inverse. The M-matrix concept is extended to rectangular matrices with full column rank. A structure theorem is provided for all matrices A with full column rank for which the generalized inverse A+ & 0. These results are then used to investigate convergent splittings of rectangular matrices...

Most of the world’s photographs are rectangular in nature. However, for artistic reasons, one might want to convert them into circular or elliptical images. In this paper, we will follow-up on mathematical work previously done on disc-to-square mappings and extend it to handle ellipses and rectangles. We will not alter the eccentricity of the shapes during the mapping. This means that the aspec...