The School of Applied Science was one of the four schools that formed the Carnegie Technical Schools at their opening in 1905. Much research focused on human factors in industry. In 1922, the School of Applied Science became the College of Engineering. "Practices" in commercial (engineering) and physics were added. During the 1930s, the faculty began adding a few humanities classes into the Engineering curriculum. In 1936, Robert Doherty became president of the Carnegie Institute of Technology. In 1940 he introduced what would be come known as the "Carnegie Plan" to give engineering students a broader understanding of the social issues which surround technological problems. In 1946, the College of Engineering became the College of Engineering and Science. When the Carnegie Institute of Technology merged with the Mellon Institute to become Carnegie Mellon University, the departments in the College of Engineering and Science were split into two separate colleges. In 1970, the sciences (mathematics, physics, chemistry, biology, and computer science) were organized into the Mellon College of Science. The engineering courses became the Carnegie Institute of Technology. In 1910, the name was changed to the School of Applied Industries. During World War I the School discontinued its regular course offerings. When normal courses started up again in 1919, most courses led to a Bachelor of Science degree. The name was also changed to the College of Industries. As their curriculums became more similar, the College of Industries began integrating their students with the College of Engineering. By 1934 the College of Industries was phased out and all of its programs were transferred to the College of Engineering.