We study the dynamics of a lattice of coupled nonidentical Fitz Hugh-Nagumo system subject to independent external noise. It is shown that these stochastic oscillators can lead to global synchronization behavior without an external signal. With the increase of the noise intensity, the system exhibits coherence resonance behavior. Coupling can enhance greatly the noise-induced coherence in the s...

In this paper we give Murnaghan-Nakayama type formulas for computing the irreducible characters of the Iwahori-Hecke algebras of types An−1, Bn, and Dn. Our method is a generalization of a derivation of the Murnaghan-Nakayama formula for the irreducible characters of the symmetric group given by Curtis Greene. Greene’s approach is to sum up the diagonal entries of the matrices of certain cycle ...

Ten women with acute right upper-quadrant abdominal pain but negative results for biliary investigations had a current or past history of pelvic inflammatory disease. A diagnosis of the Curtis-Fitz-Hugh syndrome was made and was confirmed in five patients by laparoscopy. Neisseria gonorrhoeae was not isolated from the cervical and urethral swabbings of seven patients tested. Chlamydia trachomat...

O n April 17, 2009, the Division of Nephrology at the University of Alabama at Birmingham (UAB) hosted a festschrift for a distinguished member, Dr. John J. Curtis. Our goal was to acknowledge Dr. Curtis’s achievements on the occasion of his retirement from the faculty at UAB after 30 yr of service. To anyone even remotely familiar with the study of hypertension and the history of transplant ne...

The Hilbert modular surface XD is the moduli space of Abelian varieties A with real multiplication by a quadratic order of discriminant D > 1. The locus where A is a product of elliptic curves determines a finite union of algebraic curves XD(1) ⊂ XD. In this paper we show the lamination XD(1) extends to an essentially unique foliation FD of XD by complex geodesics. The geometry of FD is related...

A 45-year-old man was admitted for pain in the upper right abdominal quadrant that had been evolving for months. His previous medical history was unremarkable. The physical examination showed a painful and tense abdomen in the right hypochondrium but the rest was pain free. Biological analysis showed an inflammatory syndrome (C-reactive protein 29.54mg/L). Liver enzymology and urine and blood c...

Abstract: This paper presents an accurate numerical method for solving a class of fractional optimal control problems (FOCPs). The fractional derivative in these problems is in the Caputo sense. In this technique, we approximate FOCPs and end up with a finite dimensional problem. The method is based on the combination of the useful properties of Chebyshev polynomials approximation and finite di...

Collection of appropriate qualitative and quantitative data is necessary for proper management and planning. Used the suitable inventory methods is necessary and accuracy of sampling methods dependent the inventory net and number of sample point. Nearest neighbor sampling method is a one of distance methods and calculated by three equations (Byth and Riple, 1980; Cotam and Curtis, 1956 and Cota...