金士宣教授和赵传云教授，是我国铁路高等教育界的两位老前辈，也是我国铁路运输与经济界的两位著名的学者、权威。他们半个多世纪以来，为我国铁路的建设、管理和培养高级运输与经济管理人才，呕心沥血，辛勤耕耘，贡献卓著，桃李满路。两老治学严谨，诲人不倦，学识渊博，德高 Professor Jin Shih-hsuan and Professor Zhao Chuanyun are two old predecessors in China’s railway higher education and two well-known scholars and authorities in China’s rail transport and economic circles. For more than half a century, they have worked hard to make outstanding contributions to the construction, management and training of senior transport and economic management personnel in our country’s railways. Two old scholarship rigorous, indefatigable education, knowledgeable, high German