we give further results for perron-frobenius theory on the numericalrange of real matrices and some other results generalized from nonnegative matricesto real matrices. we indicate two techniques for establishing the main theorem ofperron and frobenius on the numerical range. in the rst method, we use acorresponding version of wielandt's lemma. the second technique involves graphtheory.

This paper is devoted to the spatial analyticity of solution BBM equation on real line with an analytic initial data. It shown that radius has a lower bound like $$t^{-\frac{2}{3}}$$ as time t goes infinity, which improvement previous results. The main new ingredient higher order almost conservation law in spaces. proved by introducing equivalent norm smooth symbol and establishing some algebra...

This paper deals with the threshold radius that warrants the use of single restraining rail for transit and railroads. Different railways use different threshold radius from 91m to 365m to provide restraining rail. These threshold figures are probably experience driven choices. The need for restraining rail may be related to a so-called derailment alarm coefficient of 1.2 sustained over 2m leng...

background: mal::::union:::: is the most common complication following distal radius fractures. aim of this study was to evaluate the results of distal radius corrective osteotomy and plate fixation by dorsal approach in the mal::::union::::. methods: in this retrospective study, 14 patients with neglected distal radius mal::::union:::: from 2005 to 2011 were studied. all patients were treated ...

the average distance of a vertex $v$ of a connected graph $g$is the arithmetic mean of the distances from $v$ to allother vertices of $g$. the proximity $pi(g)$ and the remoteness $rho(g)$of $g$ are defined as the minimum and maximum averagedistance of the vertices of $g$. in this paper we investigate the difference between proximity or remoteness and the classical distanceparameters diameter a...

background: mal:::::union::::: is the most common complication following distal radius fractures. aim of this study was to evaluate the results of distal radius corrective osteotomy and plate fixation by dorsal approach in the mal:::::union:::::. methods: in this retrospective study, 14 patients with neglected distal radius mal:::::union::::: from 2005 to 2011 were studied. all patients were tr...

A simple yet accurate equivalent circuit model was developed for the analysis of slow-wave properties (dispersion and interaction impedance characteristics) of a rectangular folded-waveguide slow-wave structure. Present formulation includes the effects of the presence of beam-hole in the circuit, which were ignored in existing approaches. The analysis was benchmarked against measurement as well...

Principal strains were recorded in vivo from the radial and tibial midshafts of three goats as they increased speed and changed gait. These data were compared with strain data measured for the radius and tibia of the dog (Rubin & Lanyon, 1982) and the horse (Biewener, Thomason & Lanyon, 1983b) in order to test the hypothesis that similar peak bone strains (stresses) occur at functionally equiva...