Quarkonia are meson states whose constituents are a charm or bottom quark and its correspondingantiquark (QQ̄). The study of the production of such bound states in high-energy hadron collisions represents an important test for the Quantum Chromo-Dynamics. Despite the fact that the quarkonium saga has already a 40-year history, the quarkonium production mechanism is still an open issue. There...

underpinned publication” of this book, says Aitken. Most of the illustrations Aitken depicts show the artists’ love of detail: the structure of the veins of the leaf, the relation of the leaf to the stem and the arrangement of the seeds in the pod, and everything to do with the composition of the flower. From the subtitle of the book, you might expect a collection of anecdotes but the book is m...

Jean Piaget was born in Neuchâtel, Switzerland, on August 9, 1896. His father, Arthur Piaget, was a professor of medieval literature with an interest in local history. His mother, Rebecca Jackson, was intelligent and energetic, but Jean found her a bit neurotic -an impression that he said led to his interest in psychology, but away from pathology! The oldest child, he was quite independent and ...

The Game of Life cellular automaton is a classical example of a massively parallel collision-based computing device. The automaton exhibits mobile patterns, gliders, and generators of the mobile patterns, glider guns, in its evolution. We show how to construct basic logical operations, AND, OR, NOT in space-time configurations of the cellular automaton. Also decomposition of complicated Boolean...

iV whom the duties of Statutory Supervision under the Mental ^enciency Acts were being carried on for the London County Council, and this work gave her an intimate knowledge of the needs of mentally handicapped children and the value of Occupation Centres. In 1932 she came to the Central Association for Mental Welfare to fill the post of Case Secretary. Later she became Education Secretary when...