JH Ausubel, C Marchetti.
Technological Trajectories and the Human Environment
110–134
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Also appeared in Daedalus 125(3):139-169, Summer 1996.
…percent. Main Sources of Data: for lamps, Encyclopaedia Britannica, 1964; for motors, Hans Thirring, Energy for Man (Bloomington, Ind.: Indiana University Press, 1958). Still, 70-percent efficiency can be eyed as the next target, to…
C Marchetti, PS Meyer, JH Ausubel.
Technological Forecasting and Social Change
53:
1–30
1996
…the initial population No(t) by We also replace a with Dt, the characteristic duration, that is, the time it takes the population N(t) to grow from 10% to 90% of the limit k. Dt is related…
PS Meyer.
Technological Forecasting and Social Change
47:
89–102
1994
…the growth process: N(tm) = k/2. The location parameter b can be replaced by tm by defining b = -tma. It is also convenient to define a parameter Dt as the length of the time interval required for the growth process to…