We automatically associate hunger with not having enough to eat. We have all seen images of acutely undernourished people in disaster areas, and almost one billion people around the world are undernourished. However, not having enough to eat is only part of the problem of hunger. What experts refer to as ‘hidden hunger’ attracts less attention because it does not produce dramatic images, yet wh...

We study the distribution of palindromic numbers (with respect to a fixed base g ≥ 2) over certain congruence classes, and we derive a nontrivial upper bound for the number of prime palindromes n ≤ x as x → ∞. Our results show that almost all palindromes in a given base are composite. ∗MSC Numbers: 11A63, 11L07, 11N69 †Corresponding author 1

Let G = (V;E) be an unweighted undirected graph on n vertices. A simple argument shows that computing all distances in G with an additive one-sided error of at most 1 is as hard as Boolean matrix multiplication. Building on recent work of Aingworth, Chekuri and Motwani, we describe an ~ O(minfn3=2m1=2; n7=3g) time algorithmAPASP2 for computing all distances in G with an additive one-sided error...

though the worldwide age of nanotechnology dates back to almost half a century, it has become an influential technology in industry. nanotechnology has become a competitive advantage with a rapid growth rate for iran nearly for a decade. above all, the pursuit of competitive advantage in the field of nanotechnology involves the commercialization of academic research. based on the theoretical fo...