The climate crisis caused by global greenhouse gas emissions has led to many disasters around the world in recent years. Some of these are floods various parts Europe, melting Arctic glaciers, and rising water levels oceans. People living on islands Southeast Asian countries forced migrate due levels. With increase frequency such situations, life earth is at risk. Greenhouse harm not only human...

Traditionally, many ethnic groups had their own versions of arithmetic algorithms. Nowadays, most of these algorithms are studied mostly as pedagogical curiosities, as an interesting way to make arithmetic more exciting to the kids: by applying to their patriotic feelings – if they are studying the algorithms traditionally used by their ethic group – or simply to their sense of curiosity. Somew...

Abstract Evolutionary Algorithms (EAs) based on structured coding have been proposed for aerodynamic optimization of wing design. Fractional factorial design is used to investigate interactions of the design variables to determine the appropriate coding structure for EAs in advance. The present EAs is applied to wing design problems where the wing shape is modeled using the parameter set for th...

Small wind turbines are gaining popularity due to their ability to meet community or domestic needs in isolated areas with relatively easier installation and lower cost than large wind turbines. This study looks at optimizing airfoils for use in small horizontal axis wind turbines. The optimization looks to maximize the lift coefficient (Cl ) while minimizing or fixing the drag coefficient (Cd)...

Abstract Airfoils produce life force for aircraft, which is the reason planes flying in sky. The formation of airfoil depends on its shape, so designs play an important role airplane designs. design also prioritized process aircraft design, speed creating affecting progress entire project. goal airfoil’s not simply to create “good” wings, because it does exist. This means that when airfoils are...

Hoxd13, Tbx2, Tbx3, Sall1 and Sall3 genes are candidates for encoding antero-posterior positional values in the developing chick wing and specifying digit identity. In order to build up a detailed profile of gene expression patterns in cell lineages that give rise to each of the digits over time, we compared 3 dimensional (3D) expression patterns of these genes during wing development and relat...

2 See, e.g., Mitra, S. K., The Upper Atmosphere, ch. III, The Royal Asiatic Society of Bengal, 1948. 3 See, e.g., Mitra, S. K., loc. cit., p. 6. 4 Mathematical Theory of Heat Conduction, Ginn and Co., 1913, p. 40. 6 Warfield, C. N., NACA, Tech. Note, No. 1200, Langley Field, Jan., 1947. 6 The Atmospheres of the Earth & Planets, Univ. of Chicago Press, 1948, p. 142. 7 Pop. Ast., 55, 322 (1947). ...