structural steel sections are mainly used in beams and columns of building frames. iran national steel industrialgroup is among the oldest and largest producers of beams in iran. it has two beam production lines, namely line630 and line 650. in this study, the mechanical properties of manufactured beams in these production lines werecompared. based on the t-test results, the elongation is signi...

Let $G$ be a weighted digraph, $s$ and $t$ be two vertices of $G$, and $t$ is reachable from $s$. The logical $s$-$t$ min-cut (LSTMC) problem states how $t$ can be made unreachable from $s$ by removal of some edges of $G$ where (a) the sum of weights of the removed edges is minimum and (b) all outgoing edges of any vertex of $G$ cannot be removed together. If we ignore the second constraint, ca...

Learning a hidden hypergraph is a natural generalization of the classical group testing problem that consists in detecting unknown hypergraph Hun = H(V, E) by carrying out edge-detecting tests. In the given paper we focus our attention only on a specific family F(t, s, `) of localized hypergraphs for which the total number of vertices |V | = t, the number of edges |E| 6 s, s ¿ t, and the cardin...

Psychoacoustic tes t s can give valuable information for pedagogical and technical rehabilitation of hearing-impaired subjects. The two tes t s described he re give a contribution to the development of such tests . 1) The intensity-discrimination t e s t showed la rge variations of DI between the subjects and no correlation between DI and hearing los s (more than 85 dB ). m 2) The F1 discrimina...