An open-loop system of a multidimensional wave equation with variable coefficients, partial boundary Dirichlet control and collocated observation is considered. It is shown that the system is well-posed in the sense of D. Salamon and regular in the sense of G. Weiss. The Riemannian geometry method is used in the proof of regularity and the feedthrough operator is explicitly computed. Mathematic...

The similarity of rotation periods from three interesting classes of neutron stars, the anomalous X-ray pulsars (AXPs), the soft gamma ray repeaters (SGRs) and the dim isolated thermal neutron stars (DTNs) suggests a common mechanism with an asymptotic spindown phase, extending through the propeller and early accretion stages. The DTNs are interpreted as sources in the propeller stage. Their lo...

This work studies the acoustic emission (AE) behavior of textile reinforced cementitious (TRC) composites under flexural loading. The main objective is to link specific AE parameters to the fracture mechanisms that are successively dominating the failure of this laminated material. At relatively low load, fracture is initiated by matrix cracking while, at the moment of peak load and thereafter,...

Two new species of Xestoblatta from northern Brazil are described, Xestoblatta buhrnheimi sp. n. and Xestoblatta rondonensis sp. n., included in the buscki group Gurney (1939), and new characters are added to the description of Xestoblatta mamorensis Lopes & Oliveira, 2006. Xestoblatta roppai Rocha e Albuquerque-Silva & Fraga, 1975, from midwestern Brazil is redescribed, including its genital c...

In the present study seismicity of Southern Marmara Region before and after 1999 İzmit earthquake are analyzed compared. A homogeneous catalogue that have completeness above MC=2.9 covers time period between 1978 2020 is used. Comparison spatial mapping frequency-magnitude distribution revealed b-values demonstrate a general increase indicating stress decrease in region. The shortest computed T...

Correspondence: Mary Beth Lobrano, M.D., EJGH Department of Radiology, 4200 Houma Boulevard, Metairie, Louisiana 70006, USA. Telephone: 504-454-4133; Fax: 504-456-8125; e-mail: [email protected] Received February 6, 2006; accepted for publication June 2, 2006. ©AlphaMed Press 1083-7159/2006/$20.00/0 Abstract In this review, I examine the multifaceted role of radiology in the diagnosis, staging,...

We compare different procedures for combining fixed-order tree-level matrixelement generators with parton showers. We use the case of W-production at the Tevatron and the LHC to compare different implementations of the so-called CKKW and MLM schemes using different matrix-element generators and different parton cascades. We find that although similar results are obtained in all cases, there are...

We present here a study of event generators for the hadronic production of Wγ . We compare a NLO Wγ matrix element generator with the leading order calculation in Pythia . A matching scheme between a next-to-leading order Wγ matrix element generator by Baur et. al. and the Pythia parton shower is presented. The NLO package produces Wγ +0 jet and Wγ +1jet final states in the hard scattering and ...