Repository: UIHistories Project: Board of Trustees Minutes - 1968 [PAGE 1066]

EXTRACTED TEXT FROM PAGE:

1014

BOARD OF TRUSTEES

[April 17

hour, after which time, all organisms contained in it are killed. The broth may then be used as such, or it may be filtered through a Seitz or Millipore bacterial filter and the filtrate used. The activity is acid-dependent and at alkaline pH, the broth is not only devoid of any bactericidal effect but actually supports the growth of those organisms it kills in acid. These antibacterial substances are named Mirabilicides. Susceptible organisms a r e : Aerobacter paracolon, Escherichia colt, Proteus mirabilis, Proteus vulgaris, Proteus morganii, Proteus rettgeri, Pseudomonas aeruginosa, Shigella flexneri, Salmonella typhimurium, Sarrina lutea, Staphylococcus aureus, and Streptococcus faecalis. The Committee recommends that the rights of the University in this invention be assigned to the inventor, subject to the rights and regulations of the sponsoring agency. 9. Log ratio system to eliminate the effects of amplitude modulation and signal strength variation on a display — W. C. McClurg, Research Engineer in Electrical Engineering, Urbana, and Edward W . Ernst, Associate Professor of Electrical Engineering, Urbana, inventors; developed under the sponsorship of the Office of Naval Research. This method makes use of the directional pattern (the signal which contains not only the information bearing signal which is contingent upon the radio direction finding, R D F , system but which is also modified by the directional characteristics of the array) and a signal which contains the full information bearing characteristics of the contingent signal but does not have the directional properties of the array imposed upon it. The theory of operation reveals that the ratio of these two signals, that is the ratio of the directional signal divided by the signal which has no directional characteristics, contains no amplitude fluctuations caused by amplitude modulation or signal strength variation but does contain the full modulation or directional information as imposed by the R D F array. This has been accomplished by the use of analog circuitry. The logarithm of the instantaneous voltage is obtained by suitable electronic circuitry, the difference between the logarithmic values for representing each of two signals is obtained and the antilog of this difference signal is produced. The output of the analog unit is the desired signal containing only the directional information and free of amplitude modulation or signal strength variation. All processing is carried out by electronic circuitry. The Committee recommends that the rights of the University in this invention be assigned to the inventors, subject to the rights and regulations of the sponsoring agency. 10. Intrascleral implant (artificial eye) for the dog and cat — Lloyd C. Helper, Associate Professor of Veterinary Clinical Medicine, Urbana, and William Magrane, Consultant in the College of Veterinary Medicine, Urbana, inventors. The artificial eye is made from a silicone rubber sphere cut to allow the attachment of a curved piece of lucite to resemble the cornea. The iris and pupil are painted on the back of the lucite before assembling the eye. All parts are assembled with Dow Corning silicone type A medical adhesive. The same adhesive is used to bond dacron felt covering to the silicone rubber ball. When the artificial eye is placed inside the sclera, connective tissue from the sclera infiltrates the dacron felt forming a solid lasting bond between the artificial eye and the sclera of the patient. The dacron felt covering accounts for the success of this artificial eye. The Committee recommends that the rights of the University in this invention be assigned to the inventors. 11. Real-time visual display of speech parameters — Ian B. Thomas, formerly Research Associate in Electrical Engineering, Urbana, inventor; developed under the sponsorship of the United States Air Force Office of Scientific Research. This invention is a machine which presents a visual display of speech information in real time. The display panel of this machine consists in part of a 12 by 12 array of neon glow lamps. The horizontal axis of this display represents the frequency of the first formant quantized into twelve steps. The second formant frequency is presented on the vertical axis. During periods of speech input the trajectory on the display panel shows the relationship between these two speech parameters. T h e Committee recommends that the rights of the University in this invention be assigned to the inventor, subject to the rights and regulations of the sponsoring agency.

On motion of Mr. Jones, these recommendations were approved.