منابع مشابه
Beyond Viewdata
time links to their reservation systems for last room/seat/cabin availability. Bookings can be immediately confirmed and there isn't even any need to pickup the telephone-unless, of course, you need information that isn't there, or the viewda-ta system is working so slowly that booking over the phone is actually quicker. The fact is that viewdata has descended from a previous era: BPC-Before Pe...
متن کاملViewdata and SCITEL Bring Interactive Information Systems Into the House
Many Americans with cable television already enjoy the ability to receive various kinds of information on their home TV screens. But continuously displayed news headlines, weather, and stock market information is primitive in comparison to the on-line information access that many professional people have become accustomed to. That is why the imminent availability of interactive communication be...
متن کاملA Paradigm for Joined Hamiltonian and Dissipative Systems
A paradigm for describing dynamical systems that have both Hamiltonian and dissipative parts is presented. Features of generalized Hamiltonian systems and metric systems are combined to produce what are called metriplectic systems. The phase space for metriplectic systems is equipped with a bracket operator that has an antisymmetric Poisson bracket part and a symmetric dissipative part. Flows a...
متن کاملCompeting E-Purse Systems: A Standard Battle
Electronic purse systems can be an alternative for cash payments as well as PIN payments or credit card payments. For retailers as well as banks, this is attractive for reasons of cost and speed. One common system seems feasible, but in The Netherlands there have been two competing systems for several years. The common banks started with one system, but one of these banks introduced a competing...
متن کاملJoined at the Hip
Cooperation in the cerebellum y crossing knockout mice deficient for two cell adhesion molecules, Sakurai et al. have obtained the first genetic evidence for the molecules' functional overlap, and have explained why earlier tissue culture results were not replicated in single knockout mice (page 1259). Sakurai and colleagues started by engineering mice deficient for NrCAM, which had only mild (...
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ژورنال
عنوان ژورنال: Nature
سال: 1981
ISSN: 0028-0836,1476-4687
DOI: 10.1038/291182b0