The preparation and immunogenic properties of an ultraviolet-inactivated poliomyelitis vaccine

Details of the preparation and the immunogenic properties of an ultraviolet-inactivated poliomyelitis vaccine are described. The data presented indicate that the SK murine strain of the virus may be inactivated by controlled irradiation and yet retain sufficient immunizing potency to protect mice against 1,000 to 10,000 M.L.D. of the active virus administered intraperitoneally or intranasally.     

Home again: effects of the Mother-Child Home Program on mother and child

4 successive cohorts of low-income families were randomly assigned either to a home-based intervention program that focused on modeling verbal interaction between mother and child around selected toys and books or to comparison treatments. Large program effects were found on maternal interaction styles in videotaped observations. Small IQ and program-specific effects were found for children in contrast to much larger IQ effects found in earlier research. IQ effects did not appear to have been mediated by changes in maternal behavior. A variation in which toys and books were supplied without home visits was as effective as the full program on IQ but not on maternal behavior. 3 years postprogram , there were no detectable effects in achievement or IQ tests or in first grade teachers' ratings of school adjustment and performance, but IQ and achievement scores were near national norms. Reasons for discrepancies with earlier results are discussed. The results highlight the need for continued experimental evaluation of early intervention programs with safeguards to insure that samples are educationally at risk.     

A role for message TV in education

Conclusion The role of message TV in education will change with advancing technology and improving instructional design. As a stand alone activity, message TV may be too subjective an experience with too short a duration to expect enduring attitude and value changes. More research into the use of the medium as a stand alone activity is required. However, since message TV is a more effective medium for impressing with images than transmitting abstract data, it can play the affective instructional role as the strategic component within a program that uses a variety of activities to facilitate attitude and value cultivation. Message TV is a very powerful tool for persuasion that illustrates, dramatizes, and makes concrete the program’s objectives. Both of these productions operate on budgetary demands typical of educational institutions: resourcefulness, innovation, and dollar s-t-r-e-t-c-h-i-n-g. Our computer graphics are created on an Omega 500 with extra memory and a genlock device. For special effects we use a Chinon CV-T70 VHS Camcorder camera with special digital effects. This equipment belongs to our talented videographics creator, Rex Suba, who teaches high school media production. He gave a showcase presentation at AECT’s 1988 convention entitled “Desk Top Video: Low Cost Choice For Instruction” and demonstrates the innovative educational applications of his affordable equipment.     

Teachers and artificial intelligence. The Logo connection

This article describes a three-phase program for training special education teachers to teach Logo and artificial intelligence. Logo is derived from the LISP computer language and is relatively simple to learn and use, and it is argued that these factors make it an ideal tool for classroom experimentation in basic artificial intelligence concepts. The program trains teachers to develop simple demonstrations of artificial intelligence using Logo. The material that the teachers learn to teach is suitable as an advanced level topic for intermediate- through secondary-level students enrolled in computer competency or similar courses. The material emphasizes problem-solving and thinking skills using a nonverbal expressive medium (Logo), thus it is deemed especially appropriate for hearing-impaired children. It is also sufficiently challenging for academically talented children, whether hearing or deaf. Although the notion of teachers as programmers is controversial, Logo is relatively easy to learn, has direct implications for education, and has been found to be an excellent tool for empowerment-for both teachers and children.