http://exhibits.temple.edu/s/william-still/page/negro-spirituals
Negro spirituals were created and sung by enslaved Africans. The songs are very beautiful and contain coded messages used by enslaved Africans to convey hidden signals for escaping, hiding and expressing danger as well as discontent with slavery. (1) Oh Lord How Come Me Here Lord, how come me here? Lord, how come me here? Lord, how come me here? I wish I never was born There ain’t no freedom ...
https://sites.temple.edu/xifanwu/publications-of-xifan-wu/
Fujie Tang, Xifan Wu, “Theoretical X-ray Absorption Spectroscopy of Liquid Water Using First-Principles Calculations”, Chapter One in Book of Properties of Water from Numerical and Experimental Perspectives CRC Press, 19 October (2022).
https://cis.temple.edu/~giorgio/cis587/readings/constraints.html
Introduction and Definitions Search can be made easier in cases where the solution insted of corresponding to an optimal path, is only required to satisfy local consistency conditions. We call such problems Constraint Satisfaction (CS) Problems. For example, in a crossword puzzle it is only required that words that cross each other have the same letter in the location where they cross. It ...