A new type of mechanical aortic valve prosthesisTornado-compatible valve (TCV) is worked out basing on the principle of hydrodynamic compatibility with the swirling Tornado-like blood flow present in the heart cavities and main arteries. The design and profile of the TCV were calculated basing on the exact solution of the non stationary hydrodynamic equations for the class of self organizing To...

Hardware accelerators o‚er developers the ability to improve the performance and energy eciency of their applications. However, a key barrier that is preventing their widespread adoption are the shortcomings of existing tools for heterogeneous programming — they are not designed to handle the complexity of deploying an application into an environment where the availability and type of hardware...

In previous work the authors demonstrated an empirical relation, in the form of an index, between U.S. monthly tornado activity andmonthly averaged environmental parameters.Here a detailed comparison ismade between the index and reported tornado activity. The index is a function of two environmental parameters taken from the North American Regional Reanalysis: convective precipitation (cPrcp) a...

BACKGROUND Relatively few studies have examined prevalence and predictors of posttraumatic stress disorder (PTSD) or major depressive episode (MDE) in disaster-affected adolescents. Fewer still have administered diagnostic measures or studied samples exposed to tornadoes, a common type of disaster. Further, methodologic problems limit the generalizability of previous findings. This study addres...

Five misocyclones occurring along a narrow cold frontal rainband (NCFR) were detected by single, X-band Doppler radar at Yokosuka, Japan on April 20, 2006. Each of the misocyclones, which formed in succession in the core and gap regions of the meandering NCFR over a period of 30 minutes, had a short lifetime. Three of the five misocyclones generated near the surface and reached altitudes of up ...

Some climatological data on the seasonal, diurnal, and geographical distribut>iorl of tornadoes in Georgia are presented, and the tornado "season" is defined as occurring from February through April. Twelve different storms producing t,ornadoes during one or more 12-hour forecast periods are studied for synoptic similarities. A mean tornado sounding and a 700-mb. composite chart, taken from dat...

S ince the early 1970s, Doppler radar has been used as the primary tool in advancing our knowledge of the kinematics and dynamics of severe convective storms. In particular, a pair of fixed-site, S-band Doppler radars in central Oklahoma was used by the National Severe Storms Laboratory (NSSL) in Norman for a number of years. Based on singleand dualDoppler data collected by the serendipitous ne...

In this paper we present a novel method to generate 3D animation of tornados from video clips taken from a single camera. Our source of input data is a variety of tornado video clips of widely-varying fidelity available on the world wide web. By extracting the silhouette of the foreground figure and using a model-based approach, the problem is reformulated as a local, optimized search of the sh...

BACKGROUND/OBJECTIVE To qualitatively describe interventions by schools to meet children's needs after the May 2011 Joplin, Missouri tornado. METHODS Qualitative exploratory study conducted six months after the tornado. Key informant interviews with school staff (teachers, psychologists, guidance counselor, nurse, principal), public health official, and physicians. REPORT After the tornado,...