the volumetric expansion coefficient has an importance in determination of the free convection heat transfer coefficient. the buoyant force in the fluid which is the result of the variation of fluid density with temperature, is proportional to this expansion coefficient, b. this coefficient of b varies with temperature and it is important to understand under what conditions it should be evaluat...

welders may suffer from welding fumes generated during the process if the ventilation systems are improperly applied. the objective of the present work was to study the mitigation of air pollutants at welding stations, using different ventilation scenarios. four air pollutants including iron oxide, respirable dust, ozone, and carbon monoxide were measured during four different ventilation scena...

Volumetric Particle Modeling. (May 2007) Brent Michael Dingle, B.S., Bradley University; M.S., Texas A&M University Chair of Advisory Committee: Dr. John Keyser This dissertation presents a robust method of modeling objects and forces for computer animation. Within this method objects and forces are represented as particles. As in most modeling systems, the movement of objects is driven by phys...

Precomputing volumetric lighting allows realistic mutual shadowing and reflections between objects with little run-time cost: for example, using an irradiance volume the shadows and reflections due to a static scene can be precomputed into a 3D grid and this grid can be used to shade moving objects at run-time. However, a rather low spatial resolution has to be used to keep the memory requireme...

We explain how to concentrate light simultaneously at multiple selected volumetric positions by means of a 4D illumination light field. First, to select target objects, a 4D imaging light field is captured. A light field mask is then computed automatically for this selection to avoid illumination of the remaining areas. With one-photon illumination, simultaneous generation of complex volumetric...

We describe a graphical tool for analysis and visualization of three dimensional medical data. The application is intended to help physicians interpret the geometric structures of volumetric medical data and navigate through it easily. It combines novel approaches for segmenting the data and advanced techniques for visualizing the models which allow fast processing on a standard personal comput...

In this paper, we propose a novel method for the registration of volumetric images of the brain that attempts to maximize the overlap of cortical folds. In order to achieve this, relevant geometrical information is extracted from a surface-based morph and is diffused throughout the volume using the Navier operator of elasticity. The result is a volumetric warp that aligns the folding patterns.

Volume restoration has become a cornerstone in facial rejuvenation. This article focuses on the aesthetic concepts of volume loss and how to restore volume to mimic nature. The concept of evolving facial shape from a circle, to an upright triangle, to a square, to an inverted triangle is covered. Little model of the inverted egg shape is also proposed. The benefit of restoring an outer facial f...

Prevention of infection, as well as bone covering and healing, is paramount in the management of limb injury with associated muscle injury. Volumetric muscle loss (VML) is the traumatic or surgical loss of skeletal muscle with resultant functional impairment. No standardized evaluation protocol exists for the characterization and quantification of VML. Clinical photographs and video recordings,...