Introduction Many widely used file organizations can be logically partitioned into two components; the index (also called directory) component and the data leaves component. The file records are maintained in data leaves where each data leaf (leaf for short) is one logical unit which is stored in contiguous disk pages. The index component is a search structure, usually a tree or a hash table, w...

Your Everyday, Average Academic The data described in this paper come from a unique cross section study collected by the author, using a postal questionnaire, of five Scottish Universities: Aberdeen, Dundee, Glasgow, Heriot-Watt and St. Andrews undertaken in 1995/6. It encompasses detailed information on the personal and working history of 900 academics. The paper aims to provide the reader wit...

Three binaries are now established sources of emission at very high energies (>10 eV). They are composed of a massive star and a compact object. The emission can be due to the interaction of the relativistic wind from a young ms pulsar with the stellar wind of the companion (Maraschi & Treves, 1981), by which rotation-power ends up as non-thermal flux. Variations at VHE energies are explained a...

We examined the effect of distraction rate on blood vessel growth in intramembraneous ossification after vertical distraction osteogenesis in the human mandible. Six patients (aged 60 ± 9 years) with a severely atrophic mandible underwent bone augmentation with distraction osteogenesis. Two distraction rates (0.5 and 1 mm/day) were compared and for each group three patients were analyzed. Vascu...

Congenital syphilis still represents a significant public health problem worldwide, and particularly in developing countries. Despite years of research on different clinical and immunological features, many physiopathological aspects still lacks of knowledge, one of them the role of immune response against Treponema pallidum by infected mothers on the birth outcomes, e.g. birthweight. In this s...

A3 Note that each of the sets {1}, {2}, . . . , {n} has the desired property. Moreover, for each set S with integer average m that does not contain m, S ∪ {m} also has average m, while for each set T of more than one element with integer average m that contains m, T \{m} also has average m. Thus the subsets other than {1}, {2}, . . . , {n} can be grouped in pairs, so Tn −n is even. A4 (partly d...