Abstract: This discloses a method of operating a general purpose digital computer to produce securities portfolio valuation schedules for multiple simultaneous users. The computer maintains securities information in system-wide files which are updated, both electronically and manually, on a daily basis. The system permits each user to store information about his portfolios, as well as information about supplemental securities not contained in the system-wide files.

Abstract: A prosthetic wrist joint for anchoring into the radius and the metacarpals includes a radial component, a metacarpal component and an intermediate component. The radial component has a part-cylindrical bearing surface and a stem portion for insertion into the end of the radius bone. The metacarpal component has a ball-like hinge portion and a pair of outwardly protruding prongs for anchoring into the second metacarpal and the third metacarpal. The intermediate component includes a cylindrical bearing surface which cooperatively engages the part-cylindrical bearing surface of the radial component, and a socket-like recess for receiving the ball-like hinge portion of the metacarpal component for movement in the direction of radial-ulnar deviation. The modified ball and socket arrangement between the metacarpal component and the intermediate component permit limited rotational movement about the longitudinal axis of the arm.

Abstract: The invention is an apparatus for determining the quality of optical equipment through measurement of the modulation transfer function of the equipment. The apparatus includes an elongated, opaque sheet member or reticle, uniformly curved about an axis substantially perpendicular to the longitudinal centerline thereof, which has a data pattern comprising at least one bar pattern of discrete spatial frequency positioned longitudinally thereon. Each of the data patterns has optical transmission characteristics that vary periodically along its length according to a predetermined spatial frequency distribution. A rotatable mirror with its axis of rotation coincident with the center of curvature of the reticle is mounted so that it reflects an incident image onto the stationary reticle.