|
Gabriel Kron (1901 – 1968) was a Hungarian American electrical engineer who promoted the use of methods of linear algebra, multilinear algebra, and differential geometry in the field. His method of system decomposition and solution called Diakoptics is still influential today. Though he published widely, his methods were slow to be assimilated. At Union College a symposium was organized by Schaffer Library on "Gabriel Kron, the Man and His Work", held October 14, 1969. H.H. Happ edited the contributed papers, which were published by Union College Press as ''Gabriel Kron and Systems Theory''. ==Early life== Gabriel Kron was born in 1901 in Baia Mare in Transylvania, Hungary.〔Alger, P. L. (1969) ''The Life and Times of Gabriel Kron'', Mohawk Publishing〕 In 1919 he graduated from the gymnasium. By that time Transylvania had been ceded to Romania. Kron's older brother Joseph returned home, which he had left when he was ten years old. Joseph wished for a professional degree, but had no schooling after grade five. Gabriel tutored Joseph, who passed various exams, culminating in the high-school exam in 1920. In December of that year the two left home for the United States. The brothers earned their living in New York City with odd jobs such as dish washer, bus boy, or working machines in garment factories.〔 In the fall of 1922 the brothers had saved enough money to enter engineering school at University of Michigan. They continued supporting themselves with casual employment. Gabriel found digging ditches more congenial than dishwashing. He coined the motto: "There are only two occupations compatible with human dignity. One is the study of atomic structure. The other is digging ditches."〔 In 1925 Gabriel graduated and started on a trip around the world. He planned to walk and hitch hike as much as possible. He ran out of money when he reached Los Angeles, where he worked for the United States Electrical Manufacturing Company. He then transferred to the Robbins and Myers Company in Springfield, Ohio. In 1926 he set out again. From California he took passage on an oil tanker bound for Tahiti. In Sydney, Australia he ran out of money. After saving 35 pounds from work at the Electricity Metering Manufacturing Company he set out for Northern Australia. In Fiji he had finished, and buried, ''Treatise on Differential Equations'' by Forsyth. In Sydney he searched for a worthy successor, settling on ''Advanced Vector Analysis with Application to Mathematical Physics'' by the Australian C.E. Weatherburn. During long hikes in Queensland, Kron saw that vector analysis would be a powerful tool in engineering. Sea voyages took him to Saigon via Borneo, Manila, and Hong Kong. Hence overland to Cairo and Alexandria by rail, supplemented by many hours of walking. In the spring of 1928 Kron arrived in Romania and stayed with his family till the fall. After his return Kron was employed as electrical engineer for brief periods with several companies the last of which was Warner Brothers in New York. They closed his department while he was on a continuing highly paid contract.〔 He economized by living with his family in Romania. There he studied the mathematical tools of the general theory of relativity and conceived his method for applying tensor analysis to electrical power engineering. This was described in a paper entitled "Non-Riemannian Dynamics of Rotating Electrical Machinery" printed in Romania and distributed to friends. In 1933 Kron returned to the US where his paper had been well received. He worked at General Electric from 1934 until he retired in 1966. Kron was awarded the Montefiore Prize of the University of Liège, Belgium, for the paper written in Romania.〔"Gabriel Kron, IEEE Transactions on Circuit Theory 15(3):174, September 1968, see IEEE Xplore external link〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gabriel Kron」の詳細全文を読む スポンサード リンク
|