introduction: lipomas of the larynx are very rare benign lesions; macroscopically, they resemble retention cysts, so their diagnosis is usually made after surgery.   case report: a rare case of pediatric paraglottic space lipoma in an 11-year-old boy is explained. the mass was mobile, soft, without fluctuation or pulsation. ct scan revealed a 5.7 cm cervical fat density with regional lymphadeno...

We are concerned with quasilinear symmetrizable partially dissipative hyperbolic systems in the whole space R d ≥ 2 . Following our recent work dedicated to one-dimensional case [11] , we establish existence of global strong solutions and decay estimates critical regularity setting whenever system under consideration satisfies so-called (SK) (for Shizuta-Kawashima) condition. Our results partic...

We derive analytic bounds on the convergence factors associated with block relaxation methods for solving the discrete two-dimensional convection-diiusion equation. The analysis applies to the reduced systems derived when one step of block Gaussian elimination is performed on red-black ordered two-cyclic discretizations. We consider the case where centered nite diierence discretiza-tion is used...

we show that the category of convergence approach spaces is a simultaneously reective and coreective subcategory of the category of latticevalued limit spaces. further we study the preservation of diagonal conditions, which characterize approach spaces. it is shown that the category of preapproach spaces is a simultaneously reective and coreective subcategory of the category of lattice-valued p...

We summarize our experience in solving the three-dimensional carrier continuity equations in our MOS/MES-FET simulator MINIMOS S. First we give a brief overview of the algebraic properties of the coefficient matrices. We show that the matrices are symmetrizable and can be solved by the symmetrized preconditioned CG algorithm. Since the symmetrization matrices are computationally infeasible due ...

urbanisation is still one of the social themes in developing countries. in china, the rapid process of urbanisation and economic growth bring to people not only more opportunities for creating new life and pursuing happiness, but also the challenge to face various and complex social, economical and environmental problems. among them some are outstanding, like the shrinking plowland devoured by ...