21.   From these data and other findings, astronomers have developed computer models of the velocity patterns apparently produced by galactic black holes.

22.   Going into the project, scientists had developed models of the conditions they believed created tornados.

23.   He developed a model that served many philosophers.

24.   He wants to develop models for new-economy unionism.

25.   Herman developed statistical models to predict how backed up streets could get depending on factors like the location of traffic lights.

26.   I developed mathematical models that predict behavior in certain circumstances -- how the system can process information.

27.   If she can secure grants and sponsorship, McElroy would like to develop the model into an after-school program.

28.   In Africa the group sets up small pilot programs to develop models for broader approaches to combat AIDS.

29.   In Japan, Nissan was spectacularly wrong-footed when it developed expensive models instead of the cheap ones that hard-pressed consumers wanted.

30.   In response, scientists are using what they know about how much nerve cells can be stretched to develop computer models of the brain during impact.