MS or MA: Stands for Masters of Science and Masters of Arts, respectively. These are the traditional degrees given by colleges of arts and sciences in the United States. Generally, a master's degree is not sufficient to be licensed as a psychologist, although some states and Canadian provinces do allow it.
Electrical generation was the sector with the highest productivity growth in the U.S. in the early twentieth century. After the turn of the century large central stations with high pressure boilers and efficient steam turbines replaced reciprocating steam engines and by 1960 it took 0.9 lb coal per kw-hr. Counting the improvements in mining and transportation the total improvement was by a factor greater than 10.
Richard E. Caves*. Once upon a time, study of the effects of mergers was clearly the. province of specialists in industrial organization. But then, following. two upheavals, this turf was lost. The first change was the shift (in the. United States; less in other industrial countries) toward diversifying.