The micrococcal flora of the skin of 382 children and 378 adults have been investigated using a scheme derived from the work of Baird-Parker (1963). The predominant groups are Staphylococcus type 2 and Micrococcus type 2. Some differences in the carriage at different sites have been found: in general the nose, axillae, groin, and toe webs have a similar flora but this differs a little from othe...

The newly developed Yeh-Stratton (Y-S) Strength Criterion was used to study the failure of composite materials with central holes and normal cracks. To evaluate the interaction parameters for the Y-S failure theory, it is necessary to perform several biaxial loading tests. However, it is indisputable that the inhomogeneous and anisotropic nature of composite materials have made their own contri...

We answer a question of Paterson, showing that all block systems for the group generated by the round functions of a key-alternating block cipher are the translates of a linear subspace. Following up remarks of Paterson and Shamir, we exhibit a connection to truncated differential cryptanalysis. We also give a condition that guarantees that the group generated by the round functions of a key-al...