Does a regression function follow a specified shape? Do two regression functions have the same shape? How can regression functions be grouped, based on shape? These questions can occur when ...

Dennis D. Boos, Comparing K Populations with Linear Rank Statistics, Journal of the American Statistical Association, Vol. 81, No. 396 (Dec., 1986), pp. 1018-1025 ...

Linear motors, ball screws, and precision rack-and-pinion gear drives are all good options for engineers designing electromechanical linear-motion systems.