. Difference-in-differences analyses compare changes in patenting by U.S. inventors in chemistry for research fields of German … émigrés to the United States with fields of other German chemists. This test suggests that U.S. invention increased by 31 …

' effects on chemical innovation in the U.S. we compare changes in patenting by U.S. inventors in research fields of émigrés ….S. invention. Inventor-level data indicate that émigrés encouraged innovation by attracting new researchers to their fields, rather …

following: between 1882-1947, in successive waves of immigration, some 543,000 Jews immigrated to Palestine, joining the 24 …A snapshot at figures of immigration (Aliyah) to the Land of Israel (Palestine) and to the State of Israel reveals the … population was about 24 percent, and between 1948-1952, mass immigration of 711,000 supplemented a population of 630 …