scholarly journals North East Arid Zone Development Programme: Diaspora partnership opportunity in research and development in the Sahel of Nigeria

Author(s):  
Njidda M. Gadzama ◽  
1986 ◽  
Vol 12 (1-2) ◽  
pp. 21-39 ◽  
Author(s):  
Th.M. Boers ◽  
K. Zondervan ◽  
J. Ben-Asher

2021 ◽  
pp. 035
Author(s):  
Jean Pailleux ◽  
Jean Coiffier ◽  
Philippe Courtier ◽  
Emmanuel Legrand

À Météo-France, la décennie 1985-1995 a vu une profonde transformation de la prévision numérique du temps (PNT) qui a d'abord conduit au remplacement des modèles de prévision opérationnels Émeraude et Péridot par Arpège et Aladin. Dans la même période, un vaste programme de recherche et de développement a été lancé conjointement avec le CEPMMT concernant l'initialisation des modèles par des techniques d'assimilation de données dites « variationnelles ». Cette période a été aussi marquée par un virage vers beaucoup plus de coopération entre institutions travaillant sur la PNT dans les différents pays européens. Jean-François Geleyn s'est trouvé en première ligne de cette profonde transformation, toujours impliqué dans les décisions stratégiques, mais aussi souvent impliqué comme expert dans les études et développements touchant plusieurs aspects scientifiques. At Météo-France, the 1985-1995 decade was marked by a complete transformation of Numerical Weather Prediction (NWP) which led first to the replacement of the operational models Émeraude and Péridot by Arpège and Aladin. In the same period, a large research and development programme was initiated jointly with ECMWF on model initialisation through so-called 'variational' assimilation techniques. This period was also marked by an important change towards closer cooperation between the different institutions working on NWP in European countries. Jean-François Geleyn was instrumental in this complete transformation of NWP. He was always involved in the strategic decisions, but also as an expert in the studies and developments on several scientific aspects.


1976 ◽  
Vol 190 (1) ◽  
pp. 653-663 ◽  
Author(s):  
D. Boocock ◽  
M. Newman

Synopsis The history and development of British Railways' Advanced Passenger Train (APT) are discussed. The technical objectives are considered in the context of their value to commercial and operating performance. Among the technical aspects discussed are dynamics of guidance and suspension, aerodynamics, power and transmission, braking, and lightweight body structures. Highlights of the research and development programme are described, with reference to laboratory and track testing of the experimental train (APT-E) and associated experimental vehicles. The paper concludes with a description of the design of the prototype electric train (APT-P), of which three are currently being constructed for operation on the London/Glasgow route.


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