The building-block hypothesis states that the GA works well when short, low-order, highly-fit schemas recombine to form even more highly fit higher-order schemas. The ability to produce fitter and fitter partial solutions by combining building blocks is believed to be a primary source of the GA’s search power, but the GA research community currently lacks precise and quantitative descriptions o...

we define minimal cn-dominating graph $mathbf {mcn}(g)$, commonality minimal cn-dominating graph $mathbf {cmcn}(g)$ and vertex minimal cn-dominating graph $mathbf {m_{v}cn}(g)$, characterizations are given for graph $g$ for which the newly defined graphs are connected. further serval new results are developed relating to these graphs.

In this paper, by modifying Cheng-Yau$'$s technique to complete hypersurfaces in $S^{n+1}(1)$, we prove a rigidity theorem under the hypothesis of the mean curvature and the normalized scalar curvature being linearly related which improve the result of [H. Li, Hypersurfaces with constant scalar curvature in space forms, {em Math. Ann.} {305} (1996), 665--672].  

This paper is concerned with examining the way in which rooted building blocks grow in GP-like systems. We hypothesize that, in addition to the normal notion of co-operative building blocks, there are also competitive building blocks in the population. These competitive building blocks are all of the rooted variety, all share a similar root structure and compete with each other to spread their ...

Industrialization and increasing demand for the consumption of fossil fuels cause that energy becomes a strategic factor. Energy crisis and the emergence of modern architecture led designers to pay more attention to the important task of building's envelope. Building skins play an important role in building thermal behavior and reduce energy consumption. If Double Skin Facades properly designed...