Boreholes with 10% or more ellipticity are not uncommon. In this paper, we consider the coupling of an incident elastic wave into a borehole of irregular cross-section and investigate the cross-mode coupling phenomenon in sonic well logging in the presence of borehole irregularity. The mode-matching method is used. Different from its original formulation, we employ the Reichel et al. algorithm ...

Abstract Spatial confinement is important in advanced More Moore devices, such as nanowire transistors (NWTs), where the basic charge transport properties must be revised beyond bulk crystal assumptions. This work presents a comprehensive and general overview of electron mobility aggressively-scaled Si NWTs order to demonstrate effect quantum on this topic, establishing its dependence numerous ...

This study reports an experimental investigation on the impact behavior of elliptical concrete-filled steel tubular (CFT) columns subjected to lateral loading. A total five CFT columns, including one circular cross-section and four cross-sections, were tested using a horizontal-impact-testing system. The influences velocity, times, geometry dynamic response analyzed. results have shown that spe...

An alternative to full-scale experiments is computer simulation, which allows studying a variety of states, phenomena, processes, etc. occurring in the environment.
 Conducting computational experiment an integral part design phase new structures and their elements. One important issues choice research model, feasible calculation scheme possibility its simplification.
 This investigat...

A time-domain method to calculate the buffeting response of a rectangular tall building (AR B/D = 1.5 and H/D 6) in along-wind, across-wind torsional degrees freedom using 2D aerodynamic sectional properties is presented here. The were identified first wind tunnel section models. Aerodynamic damping, which critical wind-induced analysis buildings, was calculated aeroelastic derivatives (flutter...

Accurate measurements of particles masses, couplings and widths are possible by measuring production cross sections near threshold. We discuss the prospects for performing such measurements at a high luminosity muon collider.

Results on the cross section measurement of Z boson pair–production at LEP 1,2 are presented. The more general case of neutral–current four–fermion production and the particular case of ZZ events enriched in b quarks are also discussed. All the results agree with the Standard Model predictions.