The existence of immune and simple sets in relativizations of the probabilistic polynomial time bounded classes is studied. Some techniques previously used to show similar results for relativizations of P and NP are adapted to the probabilistic classes. Using these results, an exhaustive settling of ail possible strong séparations among these relativized classes is obtained. Résumé. -On étudie ...

These Notes, written from the military medical officer's standpoint, are a few "dropped stitches in the pathological Pattern of typhoid fever." Two points bearing on treatment are worthy of comment: the one is the omission of all Mention of intestinal antiseptics with a view to the prevention of relapses, and the other is the great utility of systematic antipyretic treatment either by drugs or ...

the potential of computers to support learning and teaching m almost all subject areas is now widely accepted. at ail levels of education computers aid teachers to enrich their learning/teaching environment. in the field of language education, especially english as a second/foreign language (esl/efl) computer-assisted learning has acted as an indirect boost to enhance language proficiency. whil...

Acute promyelocytic leukemia (APL) is an uncommon variant of acute myelogenous leukemia (AML) in childhood. This subtype of leukemia is distinguished by balanced reciprocal translocations between chromosomes 15 and 17 resulting in a PML/RARα fusion transcript, which plays a crucial role in their pathogenesis. Epidemiological studies have reported a 5% to 10% incidence of APL between AML in adul...