In the very next future, applications will have to be highly concurrent to get some speedup from the new trend of chip-multithreading processor architecture. But writing concurrent applications is provably more difficult than developing sequential ones. We define three objectives a concurrent programming model should target to be massively adopted by the developer community. We propose such a m...

The increasing demands in security and reliability of infrastructures call for the optimal design of their embedded complex networks topologies. The following question then arises: what is the optimal layout to fulfill best all the demands? Here we present a general solution for this problem with scale-free networks, like the Internet and airline networks. Precisely, we disclose a way to system...

For a ring R, Hilbert’s Tenth Problem HTP (R) is the set of polynomial equations over R, in several variables, with solutions in R. We view HTP as an operator, mapping each set W of prime numbers to HTP (Z[W−1]), which is naturally viewed as a set of polynomials in Z[X1, X2, . . .]. For W = ∅, it is a famous result of Matiyasevich, Davis, Putnam, and Robinson that the jump ∅′ is Turing-equivale...

INTRODI S INCE 1956, TUBERCULIN SKIN TESTING has k e n done annually in all public and parochial elementary and secondary schools in San Francisco. Since there are 120,185 pupils in 202 schools, from kindergarten through the twelfth grade, it would be impossible to test every student and do an adequate follow-up examination of all positive reactors and their families. Therefore , it was decided...

Tatanan spasial pura dibagi atas beberapa bagian, pembagian tergantung dari besar kecilnya serta kedudukan di masyarakat. Secara garis terdiri eka bhuwana, dwi tri bhuwana dan sapta bhuwana. spasial, konsep biasanya terbagi menjadi mandala atau sanga mandala. Berdasarkan pernyataan tersebut, tersirat bahwa, tatanan diikat oleh ruang yaitu trimandala Namun dengan beragam jenis-jenis yang ada Bal...