This research examines the causal impact of institutional quality on economic development from a novel perspective. At country level, we exploit variation in natural malaria prevalence 1900, just before vector-control methods were developed, to instrument for using two-stage least squares instrumental variables framework. Our is population-weighted average endemicity estimates year 1900 develop...

[1] We compare historical global temperature time series, based on bias-adjusted sea-surface temperatures with independent temperature time series, for the upper 20 meter layer of the ocean based on the latest update of an historical hydrographic profile data set. Despite the two underlying data sets being different in number of data points, instrumentation and applied adjustments, both of the ...

J. Batle, M. Casas, A. Plastino, and A. R. Plastino Departament de Física, Universitat de les Illes Balears and IMEDEA-CSIC, 07122 Palma de Mallorca, Spain Argentina’s National Research Council (CONICET), Casilla de Correo 727, 1900 La Plata, Argentina Department of Physics, National University La Plata, Casilla de Correo 727, 1900 La Plata, Argentina Faculty of Astronomy and Geophysics, Nation...

We present a status report of an ongoing effort to develop robust tunable all-solid-state sources up to 1900 GHz for the Heterodyne Instrument for the Far Infrared (HIFI) on the Herschel Space Observatory. GaAs based multi-chip power amplifier modules at W-band are used to drive cascaded chains of multipliers. We have demonstrated performance from chains comprised of four doublers up to 1600 GH...

This article constructs new life tables for the white population of the United States in each decade between 1790 and 1900. Drawing from several recent studies, it suggests best estimates of life expectancy at age 20 for each decade. These estimates are fitted to new standards derived from the 1900-02 rural and 1900-02 overall DRA life tables using a two-parameter logit model with fixed slope. ...

the present study was conducted in order to determine the effects of feeding frequency (ff) on dairy cow performance fed a total mixed ration (tmr) based on chopped alfalfa hay. eight multiparous early lactation holstein cows were housed in the individual boxes (4 × 3 m) and fed either once a day (1x) at 0700 h or 4 times a day (4x) at 0100, 0700, 1300 and 1900 h with tmr. the experiment was do...