AYLIFFE, G. A. J., and BARBER, M. (1963): Brit. med. J.. i;, 202. AYLIFFE, G. A. J., and BARBER, M. (1964): in the press. BARBER, M. (1961): J. clin. Path., 14, 385. BARBER, M. (1964): J. gen. Microbiol., 34, 183. BARBER, M., DUTTON, A. A. C., BEARD, M. A., ELMES, P., and WILLIAMS, R. (1960): Brit. med. J., i. 11. BOROWSKI, J., KAMIENSKA, K., and RUTECKA, I. (1964): Brit. med. J., i, 983. CETIN...

This paper deals with the decompositions of a flow into paths. Given a weighted directed acyclic graph and a compatible flow, we look for a decomposition of this flow such that the longest path stemming from this decomposition is the shortest possible. The complexity of this problem and some of its particular cases are first addressed, then a pseudo-polynomial algorithm and a fully polynomial t...

Graph has become a widely used structure to model data. Unfortunately, data are inherently with uncertainty because of the occurrence of noise and incompleteness in data collection. This is why uncertain graphs catch much attention of researchers. However, the uncertain graph models in existing works assume all edges in a graph are independent of each other, which dose not really make sense in ...

The Optimum Communication Spanning Tree (OCST) [2] problem is NP-hard and describes the problem of finding a spanning tree that minimizes the cost defined by edge weights and communication demands, routing all communication over this tree. Given a graph G = (V,E), a distance function d : E → R+ and a requirement function r : V ×V → R+, a spanning tree T ⊆ G is wanted minimizing the cost c(T ) =...

AYLIFFE, G. A. J., and BARBER, M. (1963): Brit. med. J., ii, 202. BARBER, M. (1961): J. clin. Path., 14, 385. BARBER, M. (1962): In "Resistance of Bacteria to the Penicillins" (edited by A. V. S. de Reuck and M. P. Cameron), p. 89. London: J. & A. Churchill. BoRowsKI, J., KAMIENSKA, K., and RUTECKA, I. (1964): Brit. med. J., i, 983. CETIN, E. T., and ANG, 0. (1962): New Istanbul Contr. clin. Sc...

Introduction: Unit risk management is a critical component of gas refining management, as risks that are not well-managed may lead to trip production failures. The present study aimed to provide a structural model for investigating the role and effect of different variables on stopping the gas production process in the gas refinery. Material and Methods: This study was a retrospective cross-se...

The path integral formulation of Quantum Field Theory implies an infinite set of local, Schwinger-Dyson-like relations. Exact renormalization group equations can be cast as a particular instance of these relations. Furthermore, exact scheme independence is turned into a vector field transformation of the kernel of the exact renormalization group equation under field redefinitions. Relations for...

late neoproterozoic-early cambrian schists have been occurred in southwest of zanjan city from the soltanieh belt. the soltanieh belt in northwest of iran is uplifted basement of precambrian-paleozoic in main central iran zone and includes outcrops of precambrian, paleozoic and mesozoic formations. late neoproterozoic-early cambrian schists, the oldest stratigraphy unit in the region, consist o...