The role of energy in the modern world goes beyond mere technology and economics to influence welfare, environment, life quality and, broadly, civilisation. Since the industrial revolution, energy conversion technology has been at the forefront of innovation required to satisfy the needs of mankind. This technology more than others has always been very dependent on the performance of the materials used; especially over the last two decades during which efficiency and environmental concerns have become challenging objectives. In this context the European Commission has developed significant collaborative programmes in Europe within the COST framework, to enhance the state of the art in this technology. The Li ge Conferences pursue the mission to report on the achievements of these programmes in the light of progress made elsewhere. The first four conferences in this series were held in 1978, 1982, 1986 and 1990, and provided the opportunity to present and review the work of the European Materials Collaborative Programmes COST-50 (gas turbines), COST-505 (steam turbines) and COST- 501 (energy conversion from fossil fuels). The proceedings of these conferences were published by Applied Science Publishers (1978) and by D. ReideIlKluwer Publishing Company (1982, 1986 and 1990). While the first two Conferences have dealt essentially with high temperature alloys for gas turbines (COST 50), the third and fourth Conferences held in 1986 and 1990 were concerned with a broader range of topics, including the work of the third round of COST-50 (1972-1983), that of COST-50l, which was initiated in 1981 and COST 505 (1983-1990).

Proceedings of a Conference held in Liege, Belgium, September 24-27, 1990

Born in 1904, Clifford D. Simak sold his first science fiction story in 1930, and was soon publishing widely in the pulp magazines. He also pursued a separate career as a journalist and writer on science and other popular topics. He gained widespread fame in the SF world with the first of his series of "City" stories, published in Astounding Science Fiction in 1944; these were collected together in the book of the same title, which has remained almost continuously in print ever since. Simak was best known for his pastoral and humanitarian themes, as exemplied in his Hugo Award-winning novel, Way Station (1963). In later years he wrote both fantasy and SF stories and novels, winning many additional accolades for his work. He died in 1988. Robert J. Ewald provides the first extended look at Simak's writing, from his earliest pulp stories to the sophistical fiction of his later years. Complete with Chronology, Notes, Primary and Secondary Bibliographies, and detailed Index.

Born in 1904, Clifford D. Simak sold his first science fiction story in 1930, and was soon publishing widely in the pulp magazines. He also pursued a separate career as a journalist and writer on science and other popular topics. He gained widespread fame in the SF world with the first of his series of "City" stories, published in Astounding Science Fiction in 1944; these were collected together in the book of the same title, which has remained almost continuously in print ever since. Simak was best known for his pastoral and humanitarian themes, as exemplied in his Hugo Award-winning novel, Way Station (1963). In later years he wrote both fantasy and SF stories and novels, winning many additional accolades for his work. He died in 1988. Robert J. Ewald provides the first extended look at Simak's writing, from his earliest pulp stories to the sophistical fiction of his later years. Complete with Chronology, Notes, Primary and Secondary Bibliographies, and detailed Index.

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