41.  In the report, Spall described four mathematical models he had devised for evaluating oboe reeds.

42.  Krakauer said he and Nowak are at work on further mathematical models which will incorporate other variables, such as the relative importance of different words.

43.  Lazear developed a mathematical model to express the relation among class size, behavior, learning and the cost of teachers.

44.  Mathematical models?

45.  Mathematical models suggest that wide-scale treatment in heavily infected countries can reduce transmission of HIV.

46.  Merton said that Mason refined the mathematical models and applied them in research, in the classroom and in practice.

47.  Ms. Athey is a theorist, one of a rare breed who conceptualize about economic behavior using mathematical models.

48.  Most speech-recognition programs are based on a mathematical model that looks for patterns in sounds and words and uses them to predict what will come next.

49.  Now Norwegian scientists have developed the first comprehensive mathematical model of currents and sea levels within the Norwegian maelstrom.

50.  Other researchers use mathematical models to study foraging and other behavior in modern hunter-gatherer societies.