The first pandemic of the coronavirus family was caused by severe acute respiratory syndrome coronavirus 2 (SARSCoV-2) in late 2019. As a result of the pandemic critical condition, specialized orthopedic services were obviouslyaffected. To respond properly, we initiated a series of strategic measures, aiming at the safety of staff, minimizing theexposure, and prevention of pos...

The gist of modal epistemology is expressed in the idea that you fail to know if you do believe truly but it is seriously possible for you to believe falsely. According to subjunctivism, this idea is captured by certain subjunctive conditionals. One formulation invokes a safety condition—“If S had believed P, then P would have been the case,” while the other invokes a sensitivity condition—“If ...

This paper discusses various aspects of Hermite-Birkhoff interpolation that involve prescibed values of a function and/or its first derivative. An algorithm is given that finds the unique polynomial that satisfies the given conditions if it exists. A mean value type error term is developed which illustrates the ill-conditioning present when trying to find a solution to a problem that is close t...

Depression in prepubertal age group is a relatively rare condition. The presence of life threatening catatonic features call for aggressive treatment. Electro convulsive therapy (ECT) has been described to be effective in these circumstances; however, doubts have been raised about its safety profile. This present case study illustrates the efficacy and safety of ECT in prepubertal catatonia.

For low Mach number flows, there is a strong recent interest in the development and analysis of IMEX (implicit/explicit) schemes, which rely on a splitting of the convective flux into stiff and nonstiff parts. A key ingredient of the analysis is the so-called Asymptotic Preserving (AP) property, which guarantees uniform consistency and stability as the Mach number goes to zero. While many autho...

We investigate the sensitive dependence of asymptotic attractors on both initial conditions and parameters in spatio-temporal chaotic dynamical systems. Our models of spatio-temporal systems are globally coupled two-dimensional maps and locally coupled ordinary differential equations. It is found that extreme sensitive dependence occurs commonly in both phase space and parameter space of these ...

Preliminary work on the development of measures appropriate for the safety domain is reported. Measures are expressed in the style of the Practical Software and Systems Measurement (PSM) approach, a programme sponsored by the US DoD. Proposed measures are integrated with the PSM measurement framework. Reported work has been informed by discussions within the PSM community and by concurrent work...