Raytracing is a method to produce photo-realistic pictures. For each pixel of an image one ray is shot to nd the object, which determines the color of the pixel. Rays are also used to simulate shadows and reeections. Previously bounding volume hierarchies have been used to speed raytracing. A new method to speed the traversal of a bounding volume hierarchy is presented. Optimisation methods to ...

We propose several simple interpolations of the isotherms for real fluids in the region below the binodal curve, where data concerning the equation of state is absent, especially in the thermodynamically prohibited region. All interpolations satisfy the boundary conditions at the points on the binodal curve. The Maxwell rule is also fulfilled. As an example,we construct several isotherms for re...

abstract background and purpose:     method:     results:     conclusion:     key words:     journal of medical education winter and spring 2007; 11 (1,2): 27-36 ecg interpretation, emergency medicine residents, internal medicine residents our study revealed that the overall scores in ecg interpretation are low and the ecginterpretation skill in im residents was better compared to em residents....

Our objective in this study is to examine the applicability of a numerical method [1, 2] to simulation of motions of microscopic two-phase uid on solid surfaces for evaluating uidic devices and for predicting underground uid ows. The method adopts a conservation-modi ed Allen-Cahn equation of phaseeld model (PFM) [3,4] for advection and formation of interfaces and lattice-Boltzmann method (LBM)...

Word-of-mouth (WOM) is recognized as an effective communication channel among consumers. The Internet provides consumers with richer sales information and more online associates than do brick-and-mortar stores but makes complex the assessment of the shaping of electronic WOM (eWOM) intention and return on eWOM. Thus, we will conduct two experiments to examine the shaping of eWOM intention and r...

This paper approaches the problem of implementing an asynchronous control for a stage of the Sproull Counterrow pipeline processor (CFPP) as an exercise in combining two synthesis techniques recently developed for Petri nets. We rst synthesise a number of Petri net models of the CFPP stage control from its original \\ve-state-ve-event" description due to C. Molnar. Secondly, we implement these ...

This research work presents a new evolutionary optimization algorithm, EVO-RUNGE-KUTTA in theoretical mathematics with applications in scientific computing. We illustrate the application of EVO-RUNGE-KUTTA, a two-phase optimization algorithm, to a problem of pure algebra, the study of the parameterization of an algebraic variety, an open problem in algebra. Results show the design and optimizat...