Air pluviation is a method of preparing laboratory models to carry out many geotechnical experiments. In this study, a new air pluviation device has been developed by the researchers. For laboratory modeling, it is important to calibrate the device using air pluviation to produce accurate specimens with desirable conditions and relative densities. A series of laboratory tests were conducted to ...

Using a normalized CES function with factor-augmenting technical progress, we estimate a supply-side system of the US economy from 1953 to 1998. Avoiding potential biases that have occurred in earlier estimations and putting a high emphasis on the consistency of the data set, required by the estimated system, we obtain robust results not only for the aggregate elasticity of substitution but als...

Rainer Hedrich studies phytosensorics and plant electrical signaling at the University of Würzburg.

Schon lange nicht mehr war so viel Zukunft wie heute. Mit Bankencrash, Fukushima und Deepwater Horizon sind unversehens die ökonomischen und technischen Großrisiken, die Katastrophen, Gefahren und Unsicherheiten in die Gegenwart einer Weltordnung zurückgekehrt, deren Protagonisten einst das »Ende der Geschichte« versprachen, womit sich kurzweg die Frage der Zukunft und ihrer Alternativen erledi...

During the last general assembly of our society, held in Miami on February 2010, the election of the new IDS representatives took place. Our president, Peter Soyer, expressed his intention to resign from his role as president and the assembly agreed to give to myself the responsibility to continue his action. Iris Zalaudek was designated to be the new general secretary and Rainer Hofmann-Wellen...