ZnO as a promising photocatalyst has gained much attention for the removal of organic pollutants from water. However, main drawbacks relatively low photocatalytic activity and high recombination rate photo excited electronhole pairs, restrict its potential applications. Promoting spatial separation charge carriers is paramount signi? cance photocatalysis, because dierence in band positions make...

aggregation operators (aos) have been studied by many schol- ars. as many aos are proposed, there is still lacking approach to classify the categories of ao, and to select the appropriate ao within the ao candidates. in this research, each ao can be regarded as a cognitive style or individual dierence. a cognitive style and aggregation operator (csao) model is pro- posed to analyze the mapping ...

One of the major problems in turbulent combustion is to predict the turbulent burning velocity, which can be increased by the turbulence compared to the laminar burning velocity. This requires the solution to a reacting ow problem, where the turbulence is coupled to the chemical reaction. The diculties lie in the fact that many disparate spatial and temporal scales are present in the convection...

The numerical methods employed in the solution of many scientiic computing problems require the computation of derivatives of a function f : R n ! R m. Both the accuracy and the computationalrequirements of the derivativecomputation are usually of critical importance for the robustness and speed of the numerical solution. ADIFOR (Automatic Diierentiation In FORtran) is a source transformation t...

The potential capabilities and limitations of single ball lenses for coupling laser diode radiation to single-mode optical bers have been analyzed; parameters important to optical ber communications were specically considered. These parameters included coupling eciency, eective numerical apertures , lens radius, lens refractive index, wavelength, magnication in imaging the laser diode on the be...