68,702 research outputs found
G-load indicator and warning device for aircraft
Device facilitates pilot control of g-load maneuvers and provides immediate indication of g-load constraint violations. It may be used in test flights, in aircraft simulators, or in displays of performance of remotely piloted aircraft
Concerning the Double Scaling Limit in the Vector Model in Four-Dimensions
The 1/N expansion for the O(N) vector model in four dimensions is
reconsidered. It is emphasized that the effective potential for this model
becomes everywhere complex just at the critical point, which signals an
unstable vacuum. Thus a critical O(N) vector model cannot be consistently
defined in the 1/N expansion for four-dimensions, which makes the existence of
a double-scaling limit for this theory doubtful.Comment: 6, BRX-TH-33
Exchanging Goods Using Valuable Money
A group of people wishes to use money to exchange goods efficiently over
several time periods. However, there are disadvantages to using any of the
goods as money, and in addition fiat money issued in the form of notes or coins
will be valueless in the final time period, and hence in all earlier periods.
Also, Walrasian market prices are determined only up to an arbitrary rescaling.
Nevertheless we show that it is possible to devise a system which uses money to
exchange goods and in which money has a determinate positive value. In this
system, tokens are initially supplied to all traders by a central authority and
recovered by a purchase tax. All trades must be made using tokens or promissory
notes for tokens. This mechanism controls the flow rather than the stock of
money: it introduces some trading frictions, some redistribution of wealth, and
some distortion of prices, but these effects can all be made small.Comment: 23 pages, 10 figures, revise
Means for suppressing or attenuating bending motion of elastic bodies Patent
Development of systems for automatically and continually suppressing or attenuating bending motion in elastic bodie
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