Charles Hartshorne's considerable writings have been influential in contem- 1 porary religious and philosophical thought. Not only is he regarded as the leading living representative of process thought as well as a much respected interpreter of Whitehead, but he has also established himself as an original 2 and creative thinker in his own right. The literature on his philosophy has been rapidly increasing. His thought and influence have also been the subject 3 of a number of conferences and gatherings of scholars. One of Hartshorne's most notable contributions to contemporary philoso- 4 phy...

1. 1 Preliminary Concepts A cam mechanism is a mechanical system consisting of three basic components: a driving element, called the cam; a driven element, termed the follower; and a fixed frame. Sometimes, an intermediate element is introduced between the cam and the follower with the purpose of improving the mechanism performance. This element is called the roller because function is to produce a pure-rolling relative motion be- tween the cam and the follower. The purpose ofa cam mechanism is the transmission of power or information. In applications concerning power transmission, the main...

Genetic engineering has already produced impressive results in biological research. The gene transfer and cloning methods are changing biotechnology into an innovative activity with potentially great impact on health care, on chemical, pharmaceutical and food industries, on the agricultural and the natural environment. It has thus attracted a great deal of attention from the public and regulatory authorities. There is a need to reconcile technological progress with safety assurance and civic acceptance. Technologies are regulated according to the inherent risk evaluated, through criteria...

Recent years have seen increasing evidence that the main epoch of galaxy formation in the universe may be directly accessible to observation. An gular fluctuations in the background relict radiation have been detected by various ground-based instruments as well as by the COBE satellite, and suggest that the epoch of galaxy formation was not so very early. Combined optical and radio studies have found galaxies at redshifts above 2. 0, systems that at least superficially show the characteristics expected of large galaxies seen only shortly after their formation. And absorption lines in the...

Experts from academia and government who are actively engaged in research in the area of risk communication present a compendium of cases that give information and allow the development of strategies to improve the communication of scientific information to the public. The cases span Western, Central and Eastern Europe, covering such areas as nuclear waste, heavy metal contamination, landfill siting, risk perception, global warming, international health for all, and more. The conclusions and recommendations presented here are being used to develop future activities to further explore this...

The original stimulus which started KENNETH SPENCER on a study of the Agro myzid flies was an invitation, which he accepted, to translate from the German the monograph on Leaf Miners by Professor E. M. HERING. From this developed nearly 20 years of collaboration until Professor HERING's death in 1967. Dr. SPENCER has himself described over 600 new species in the family, many of which he collected and reared from known host plants during his extensive travels to all the five main continents. Largely as a result of his work, the number of species known in Britain has increased from 90 in 1945...