Flow over a downstream-facing step is predicted using the F.E.M. A two-equation model of turbulence is employed where the transport of turbulence kinetic energy and dissipation rate are depicted using transport-type equations, i.e. the two-equation model of turbulence. The results obtained are compared with other models and experimental results. Generally, the model was found to be under-predic...

application of chemical pesticides has increased significantly worldwide and has raised serious concerns about environmental pollutions. one of the encouraging trends to minimize pesticide risk is production of resistant plants containing toxic proteins against insect pests. considering the importance of purification and characterization of digestive enzymes in the production of resistant plant...

Humans and other animals exchange gravitational potential energy (GPE) and kinetic energy (KE) of the center of mass during level walking. How effective is this energy exchange during downhill and uphill walking? Based on previous reports and our own reasoning, we expected that during downhill walking, the possibility for mechanical energy exchange would be enhanced and during uphill walking, t...

A self-consistent rate equation (RE) approach to submonolayer growth on a one-dimensional surface is presented. This approach explicitly takes into account the existence of gaps between clusters and can successfully predict the coverage dependence of the average densities of monomers N1, and clusters, N . It also implies an unusual dependence for the monomer-monomer capture number 1 as a functi...

We describe herein the setting up of an automatic morphosyntactic and lexico-semantlc analysis system for Spanish. This sy s t em uses l e a r n i n g methods a n a l o g o u s t o t h o s e used f o r F rench ( o f . Andreewski e t a l . : 1973, Dunod, 1974 and 1977 IFIP proceedings). The learning is going on step by step (I.000 words each) a~d a syntactical parsing (specific t o Spanish) a t ...

Multitemporal satellite optical images of the same terrain are very applicable in monitoring and quantifying large scale land cover change over time. These images are confounded in terms of radiometric consistency due to differences in sensor calibration parameters, illumination, geometric condition and variation in atmospheric effects. To analyze these images, it is necessary to omit mentioned...

Anti-interception guidance can enhance a hypersonic glide vehicle (HGV) compard to multiple interceptors. In general, anti-interception for aircraft be divided into procedural guidance, fly-around and active evading guidance. However, these methods cannot applied an HGV’s unknown real-time process due limited intelligence information or on-board computing abilities. this paper, approach based o...