This research has two main components. The first component addresses the evolution of mud flows (i.e. dense gravity currents) on submarine slopes, with the goal of developing the capabilities to predict the velocity, thickness, and run-out distance of mud flows. The second component of the research involves experiments on non-channelized turbidity currents (i.e. dilute density currents) and the...

................................................................................................................................................... ii Preface...................................................................................................................................................... 1 Background ..............................................................................

The purpose of this study was to evaluate the ability of continuous wave Doppler ultrasound recordings to reflect the magnitude and hemodynamic effects of aortic regurgitation. Forty-five patients with angiographically proved aortic regurgitation had Doppler studies performed within 24 hours of cardiac catheterization. High quality spectral recordings of the regurgitant jet were obtained in 31 ...

The use of artificial neural networks has increased in many areas of engineering. In particular, this method has been applied to many geotechnical engineering problems and demonstrated some degree of success. A review of the literature reveals that it has been used successfully in modeling soil behavior, site characterization, earth retaining structures, settlement of structures, slope stabilit...

(b) (c) (e) (d) (f) Figure 3. Results. (a) 128 × 128 Pixel Slope Image. (b) Reconstructed Topography. (c) Surface Plot. (d) 128 × 128 Pixel Slope Image. (e) Reconstructed Topography. (f) Surface Plot. Figure 2. Density Plot of Slope Data: Breaking Wave Case. This slope image is associated with the data shown in Figure 1. The plot measures 500 × 240 pixels, which corresponds to an area of 80 mm ...

soil and land information is vital for land use planning and infrastructure development. maps of soils landscapes are powerful tools to guide sustainable planning and natural resource management. fuzzy set theory has been widely used in soil science for soil classification and mapping, land evaluation, fuzzy soil geostatistics, soil quality indices. in fuzzy logic-based approaches, soil spatial...

Background. Considerable discrepancies between Doppler and catheter gradients caused by localized gradients and pressure recovery have been reported for normal bileaflet aortic valve prostheses. Methods and Results. To examine whether this Doppler-catheter gradient relation is affected by prosthetic valve malfunction, a 19-mm CarboMedics aortic valve was simultaneously studied with continuous-w...

The separation of sexes in plants (dioecy) implies differences in reproductive biology that in many cases favour sexual dimorphism and spatial segregation. Females of the dioecious conifer Austrocedrus chilensis have higher reproductive effort than males. We examined the spatial distribution of male and female Austrocedrus trees along a range of environmental conditions and sex-related growth p...