In this paper, locally 3-arc-transitive regular covers of complete bipartite graphs are studied, and results are obtained that apply to arbitrary covering transformation groups. In particular, methods are obtained for classifying the locally 3-arctransitive graphs with a prescribed covering transformation group, and these results are applied to classify the locally 3-arc-transitive regular cove...

objective: to compare outcome of patients with burns covering less than 15% of total body surface area(tbsa) undergoing early excision and grafting or delayed skin grafting. method : this was a non-randomized clinical trial including 54 patients with less than 15% tbsa burn referring to ghotboddin hospital of shiraz. they were assigned to two study groups, each group including 27 patients: the ...

The conformal space M was introduced by Dirac in 1936. It is an algebraic manifold with a spin structure and possesses naturally an invariant Lorentz metric. By carefully studying the birational transformations of M, we obtain explicitly the transition functions of the spin bundle over M. Since the transition functions are closely related to the propagation in physics, we get a kind of solution...

AIMS To study bed-sharing and cot-sleeping infants in the natural setting of their own home in order to identify differences in the thermal characteristics of the two sleep situations and their potential hazards. METHODS Forty routine bed-sharing infants and 40 routine cot-sleeping infants aged 5-27 weeks were individually matched between groups for age and season. Overnight video and physiol...

which leave the subspace (3) invariant, commute with all symmetry operations of the group of the covering space. There is no obvious physical interpretation which one could give these integrals of motion. The fact that the topological structure of the world influences in quantum theory the integrals of motion remains remarkable enough to be recorded. 1 Friedmann, A., Z. Physik, 10, 377 (1922); ...