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General circulation model (GCM) experiments in the late 1970's indicated that the climate is sensitive to variations in evaporation at the land surface. Thus, in the context of climate modeling, it became important to develop techniques which would realistically estimate the evaporation flux on land. Land Surface Evaporation: Measurement and Parameterization discusses strategies for the use of experimental data in developing and testing parame...

During the past thirty years considerable efforts have been made to design the synthesis and the study of molecular semiconductors. Molecular semiconductors - and more generally molecular materials - involve interactions between individual subunits which can be separately synthesized. Organic and metallo-organic derivatives are the basis of most of the molecular materials. A survey of the literature on molecular semiconductors leaves one rathe...

This book presents a methodological approach for the joint design of economic and environmental policies. The starting point is the observation that, in practice, policy makers do not usually have a well-defined objective, but they are typically concerned about a number of economic and environmental indicators that conflict with each other. In view of this, policy making is addressed by combining two separate analytical approaches: multiple cr...

Excerpt from L'Islam Et les Races, Vol. 1Parmi ces problèmes, certains sont d'ordre exclusive ment religieux ou, pour mieux dire, doctrinal à ceux-là, le savant ouvrage du professeur Goldziher, Le Dogme et la Loi de l'islam, récemment traduit par M. Arin, fournira les éléments d'une réponse. Par contre, pour les problèmes si variés, si délicats aussi, de l'ordre politique, où aller chercher des informations précises Quel manuel des questions m...

The NATO Advanced Study Institute on "Electronic Structure and Properties of Polymers" was held at the Facultes Universitaires de Namur (F.U.N.) from August 31 till September 14, 1977. We wish to express our deepest gratitude to the Scientific Affairs Division of NATO, the main sponsor of this Institute, and to the Facultes Universitaires Notre Dame de la Paix and their Board who gave us generous financial help as well as accommodation for the...

Join in the fun as thirteen boys and ten girls from Tolland, Connecticut tell about their five-day school trip to Quebec City, Canada. Based on a real group of fourth graders from Parker Memorial School (Tolland, CT), Our Wacky Trip is sure to keep you laughing from start to finish. Told through the eyes of ten-year-old Caleb Bahler, this book is specifically designed for all children in third, fourth, and fifth grades who need a break from th...

, Jean ANDRE Universite de Paris XI, ORSAY, France. Sperm cells have long been considered as the most highly specialized of all living cells. They surely are, being very diverse, very complex, containing organelles which do not exist in any other cell -such as acrosome or crystallized mitochondria- and being endowed with a very unique behaviour, that is to meet and recognize the ovum, pierce its protective envelopes and inject into its cytopla...