BACKGROUNDS/AIMS Aging of population is leading to more operative treatments on elderly patients in various aspects. Growing numbers of patients are going through operations about cholecystitis in the same sense. We tried to survey them anew about remarkably increasing octogenarian patients and the outcome after operative management for cholecystitis seeking to improve treatment result. METHO...

The patent laws are in the U.S. Constitution dating back from 1790 to 1793 to promote, as articulated by one of the framers, Thomas Jefferson, and protect ‘any new and useful art, machine, manufacture, or composition of matter, or any new or useful improvement thereof ’. Although the U.S. Congress in 1952 replaced the word ‘art’ with the word ‘process’, the Congress, as well as the courts, have...

Life is normally expected to proceed through childhood, youth, adulthood and old age. What happens then if death occurs at some earlier phase of life and not at a far distant time in people’s everyday lives? This will most often be a sudden and unexpected death. How do the nearest family, friends and acquaintances of the deceased cope with this? How and why are new rituals created, how are they...

AbstractIn this study, we extend the properties of Mittag-Leffler function that occurs as solution a fractional differential equation. Also, use to solve order mathematical model epidemiology and offer novel technique for obtaining an approximate logistic

AbstractIn this paper we will study the various method of dispersion compensation in single mode fiber created because of dependence of group index to wavelength known as chromatic dispersion. Various methods of dispersion compensation are Dispersion compensation fiber (DCF) which compensates dispersion at 1310nm and 1550 nm and Fiber Bragg gratings (FBG) which compensate dispersion at waveleng...

AbstractIn the present paper the problem of propagation of Rayleigh waves due to a finite rigid barrier in a shallow ocean has been analyzed. The reflected, transmitted and scattered waves have been obtained by fourier transformation and Wiener-Hopf technique. Numerical computations for the amplitude of the scattered and the reflected waves have been made versus the wave number. It has been don...

AbstractIn Time Interleaved Analog to Digital (TIADC) conversion process, multi-mismatches can be occurred these mismatches highly degrade the system performance. Different mismatches can be frequency mismatches, offset mismatches, timing mismatches and gain mismatches. Due to different Hardware delays and it happens because TIADC ICs are not identical and goes worse when multiple chips are use...

AbstractIn this paper we investigate a class of artificial neural networks with delays subject to periodic impulses. By exploiting Lyapunov functions, we analyze the global exponential stability of an arbitrary solution with initial value being bounded by  . Further, we discuss the existence of anti-periodic solutions by constructing fundamental function sequences based on a solution with init...