A ball training system for pitchers for effectively improving the pitching abilities of a baseball or softball pitcher. The invention also provides methods of identifying a therapeutic agent for use in treating obesity or memory impairment by administering a compound to the mutant non-human mammal having a disrupted SCA2 gene and screening said mutant non-human mammal for reduced obesity, thereby identifying a therapeutic agent for use in treating obesity. The message is transferred to a plurality of nodes according to a defined data flow. This transmittance distribution filter is applied to an excimer laser annealing method, a phase shift stripe method or an SLS method respectively using a general line beam to thereby reduce the height of protrusions on a polycrystalline surface. Each segment of each iteration may be encoded with error detection information. The support wheels have a rocker configuration whereby weight of the ROF circuit breaker is transferred between different sets of the wheels during movement to thereby facilitate ease of movement.