We discuss the early history of B-splines with an arbitrary knot sequence, and of their recurrence relations. These seem to have first appeared in papers of Popoviciu and Chakalov from the 1930’s. key words B-spline, recurrence, divided difference

To improve the utilization rate of bamboo, glued laminated bamboo hollow column (GLBHC) was examined under eccentric compression to study effects different slenderness ratios, distances, and wall thicknesses on its ultimate bearing capacity. The nonlinear deformation material P-delta effect occur compression, which can affect capacity, so it is very important analyze elastic-plastic buckling co...

from chitinase hydrolyzate of the fungal cell wall by CM-Sephadex C-25 column chromatography, while (GlcNAc)2 and seyeral types of deacety]ated chitooligosaccharides were separated from that of 2S---35% acetylated chitesan. The results indicate that ?VLacetylglucosamine residues in the pelysaccharide chains of the fungal cell waR are most likely condensed into some region, while acetylated resi...

This study aims to investigate the impact of soil-structure interaction (SSI) on seismic behavior reinforced concrete buildings. An advanced numerical model for SSI was developed and verified using ABAQUS software. The response a 12-story building four types soil (rock, dense soil, stiff soft soil) examined Normalized Response Spectra based Moroccan paraseismic regulation RPS 2011. global later...