Forward rates in the term structure of interest contain predictions of future spot rates plus (possibly) term premia. Realized spot rates contain predicted spot rates plus forecast errors. Under rational expectations forecast errors are not Real Uggs Uk
predictable. By forecasting spot rates using publicly available information, bounds on the variation of forecast errors, and term premia are obtained. For one-month treasury bill rates, one Ugg Stockists Leeds Uk
to two thirds of the variation in the difference between forward rates and realized spot rates is due to variation in term premia.
This paper examines the aerodynamic characteristics of a number of devices capable of use for wind assisted fuel saving purposes. Coefficients of effective maximum forward drive force are obtained for each device based on a suitable reference area and the true wind velocity. Curves are presented for a full range of true wind course angles for each device and a number of conclusions are drawn as to the most compact wind assistance systems.The wind assistance devices studied include the Prolss Rig, High Lift Aerofoils, Rotating Cylinders, Wind Turbines and Kites.