a Departamento de Inform atica, Escola Superior de Enxener ıa Inform atica, Universidad de Vigo, Campus Universitario As Lagoas, E-32004 Ourense, Spain b Departamento de Inform atica, Escuela Polit ecnica, Universidad de Extremadura, Avda de la Universidad, s/n, E-10004 C aceres, Spain c Departamento de Zootecnia, Facultad de Veterinaria, Universidad de Extremadura, Avda de la Universidad, s/n,...

Chen, R.-J. and Y.-S. Hou, Non-associative parallel prefix computation, Information Processing Letters 44 (1992) 91-94. Associativity of a binary operation allows many applications that are not possible with a non-associative binary operation. We propose a method to transform a binary expression into an associative one and present two related applications.

Readers of Mary Chubb's Nefertiti Lived Hereand they seem to be legion, judging by the number of enquiries addressed to the Museum's Information Desk-will remember that the "crowning moment" in the life of the excavators at Tell el Amarna during that season of 1931 was the discovery, in the ruins of a house in the northern suburbs, of the small but exquisite head shown on this page. After some ...