Leon Winslow

Learn More
A pair of surveys asked healthy adults about their everyday visual problems. Participants ranged in age from 18 to 100 and were screened for major visual impairment. Respondents rated the frequency of difficulty they had performing visual tasks such as reading, recognizing objects, picking out a face in a crowd, seeing in dimly lit environments, seeing(More)
A general formula is developed which gives the "best" approximation for any linear functional on the Hardy space H1. Some "best" approximations are given for interpolation , differentiation, and integration and are compared to polynomial approximations. I. Introduction. Several recent papers [3]-[6] have investigated the numerical differentiation and(More)
  • 1