For a number of years, "process-product" re searchers have studied the relationship between teacher behaviors (process) and student achievement (product) with the hope of determining what teacher behaviors will lead to increases in student achieve ment and attitude. At last, this research has borne fruit. Several reviewers of process-product research have recently concluded that effective teach...

The notion of Asteroidal triples was introduced by Lekkerkerker and Boland [6]. D.G.Corneil and others [2], Ekkehard Kohler [3] further investigated asteroidal triples. Walter generalized the concept of asteroidal triples to asteroidal sets [8]. Further study was carried out by Haiko Muller [4]. In this paper we find asteroidal numbers for Direct product of cycles, Direct product of path and cy...

Dixon’s famous theorem states that the group generated by two random permutations of a finite set is generically either the whole symmetric group or the alternating group. In the context of random generation of finite groups this means that it is hopeless to wish for a uniform distribution – or even a non-trivial one – by drawing random permutations and looking at the generated group. Mealy aut...