Is the Green Revolution Vanishing? Empirical Evidence from TFP Analysis for Rice

A serious concern has been raised recently on the long run sustainability of the productivity effects of Green Revolution technologies in the light of decelerating trend in the yield growth of rice since the mid 1980s under irrigated ecosystem. However, the changes in physical yield are not true measures of productivity from efficiency perspective. Total factor productivity (TFP) is a true measure of economic efficiency of any technology impact. The paper addresses the crucial issue of "is green revolution vanishing" empirically by analyzing TFP for rice in India. Results suggest that various modern technologies (such as modern cultivars) adopted by the farmers over the period have continued to make considerable impact on rice productivity growth-as reflected in the increasing trend of TFP growth. However, rate of increase in TFP growth has started to decelerate under the irrigated ecosystem during the late GR period. This implies that 'level' of productivity impact of the successive generations of modern technologies (such as new modern cultivars) has apparently been going down. This is not unusual to experience plateau or deceleration in TFP growth in the progressive areas because TFP level can not be increased at the same rate during the late GR period as it was during the early GR period.Technological change, productivity, rice, India, Crop Production/Industries, Research and Development/Tech Change/Emerging Technologies, O3,

Is the Green Revolution Vanishing? Empirical Evidence from TFP Analysis for Rice

A serious concern has been raised recently on the long run sustainability of the productivity effects of Green Revolution technologies in the light of decelerating trend in the yield growth of rice since the mid 1980s under irrigated ecosystem. However, the changes in physical yield are not true measures of productivity from efficiency perspective. Total factor productivity (TFP) is a true measure of economic efficiency of any technology impact. The paper addresses the crucial issue of "is green revolution vanishing" empirically by analyzing TFP for rice in India. Results suggest that various modern technologies (such as modern cultivars) adopted by the farmers over the period have continued to make considerable impact on rice productivity growth-as reflected in the increasing trend of TFP growth. However, rate of increase in TFP growth has started to decelerate under the irrigated ecosystem during the late GR period. This implies that 'level' of productivity impact of the successive generations of modern technologies (such as new modern cultivars) has apparently been going down. This is not unusual to experience plateau or deceleration in TFP growth in the progressive areas because TFP level can not be increased at the same rate during the late GR period as it was during the early GR period

Diodengepumpte TEM_0_0 Festkoerperlaser hoher Leistung mit Frequenzverdopplung Abschlussbericht

There is a growing industrial need for compact, highly efficient and maintenance free laser sources with high power and a long lifetime. With diode pumped solid state lasers such sources are feasible. The reseach of the scientifical and technical basics for this lasers was the target of this project. The main target of the part project done by ADLAS was to work out the basics for a frequency doubled TEMoo laser with more thant 10 W and an efficiency of better 0.5 percent. The reseach on the needed pumping modules for side- and endpumping lasers is reported intensively. 'Experiments with the different pumpmodules in side- and endpumped lasers with and without frequency doubling were studied intensively. It was shown that endpumped lasers are very much more efficient and scalable with fiber coupled laser diodes. We demonstrated a frequency doubled power of 10.7 W with an overall efficiency of better 2 percent. (orig.)SIGLEAvailable from TIB Hannover: F96B1248+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Effiziente Festkoerperlaser Schlussbericht

SIGLEAvailable from TIB Hannover: FR 5237+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Hochleistungs-Halbleiterlaser als Pumpquellen fuer Nd:YAG-Festkoerperlaser Schlussbericht

SIGLEAvailable from TIB Hannover: FR 5120+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman