作者：MEGARGEE, EI; BOGART, P; ANDERSON, BJ
作者：WEISSENBERG, P; GRUENFELD, LW
作者：WORCHEL, P; BYRNE, D; YOUNG, RK
摘要：This investigation was an attempt to evaluate the effectiveness of an electronic obstacle-detecting (O/D) device for the blind. Ss [subjects] were 26 totally blind individuals. Three series of training sessions on the O/D were conducted. Performance was assessed in 1 pretraining session with the customary mode of travel a*d 3 posttraining sessions with the O/D. Ss were also given several psychological tests and 2 interviews. Using the O/D on a standard obstacle course, Ss took longer to walk t...
作者：BRUVOLD, WH; PANGBORN, RM
摘要：Solutions of 1000 and 2000 ppm (mg. per liter) of Na2SO4, NaHCO3, CaSO4, MgSO4, NaCl, CaCl2, and Na2CO3 were rated on an acceptability scale in 3 separate studies. Results showed that the minerals ranked acceptability approximately as listed. Implications of the findings were discussed mainly in regard to detection thresholds for the 8 minerals and consumer-acceptance of naturally mineralized ground waters used for domestic supplies.
