Seven Decades of Botany1

Introduction: Seven Decades of the IS-LMModel

For some twenty-five years after the end of World War II, the IS-LM model dominated macroeconomics. With the advent of the new classical macroeconomics in the early 1970s, that dominance was at first challenged and then broken. Yet the IS-LM model lives on. While no longer central to the graduate training of most macroeconomists or to cutting-edge macroeconomic research, the IS-LM model continu...

Generalizations of the Sampling Theorem: Seven Decades After Nyquist

The sampling theorem is one of the most basic and fascinating topics in engineering sciences. The most wellknown form is Shannon’s uniform-sampling theorem for bandlimited signals. Extensions of this to bandpass signals and multiband signals, and to nonuniform sampling are also well-known. The connection between such extensions and the theory of filter banks in DSP has been well established. Th...

Seven decades of wage changes (IS 932 A1)

Between 1920 and 1990, the current annual average wage of individuals increased twenty-five-fold, while prices rose seven-fold. Thus, on the average, wage-earners increased their purchasing power by more than three and a half times over these 70 years. These gains were not obtained at a uniform rate over the entire period, however. During the first two decades, the changes in real wages were qu...

Organic ion transport during seven decades. The amino acids.

The amino acids are ions of various charge combinations, and one can argue that historically they were the first ions for which the ongoing problem of membrane transport was presented; also that among transported ions these may undergo a highly detailed molecular recognition. Furthermore, the distribution of charge on the amino acid molecule determines by what route or routes it is conducted ac...

The Impact of White Pine (Pinus strobus) on a Mollisol After Seven Decades of Soil Development