Yukie SUGIURA, Ikuei DONJOU and Ryuji SHINTANI

　By using CAD/CAM System for knitted fabrics, a complicated fabric pattern can be knitted in a short time easily. To knite a complicated pattern fabrics need many dyed yarns which fit that pattern. Usually the CAD/CAM System can't use over six colored yarns.
　In this study, we have examined the technique of applying the textile design due to express a complicated pattern of six colored yarns.
　As a result, we choose five colored yarns that consist of black, white, red, yellow and blue as reference colors, and combine two colored yarns from among these; namely black and white, red and yellow, yellow and blue, and blue and red. Then we have made the panels of knitted samples that are fifteenth gradations between two colors with Minsell values.
　In adition, we can produuce four knitted panels that are called "Four seasons of Kenroku park", which are original picture of photographs, by the present technique.
Keyword: multicolor, knitted fabrics, CAD/CAM

Sukeyasu KANNO, Kozo SAKIKAWA

　Eye-mark can be measured using an eye-camera, however it is impossible to carry out automatic measurement in case of the human head movement. In the research, in order to correct the rapid and large movement of a worker, 9 LED(light emitting diode)s with the wide beam angles to indicate the absolute position were fixed to the observed work board. Then, we developed the system to analyze the worker's attitude and position, and measure the absolute coordinates of the eye-mark automatically by detecting the position of each LED in the image from the small TV camera attached to the usual eye-mark detecting unit.
　The Features of the developed system are as follows.
1) It is possible to analyze the eye-mark in the wide range of works by recognized 9 LEDs.
2) The information necessary for obtaining the eye-mark position can be extracted every 1/30 second by the image processing hardware.
3) The eye-mark can be calculated automatically also in case of the human rotary motion.
Keyword: eye-mark, eye-camera, automatic measurement, light emitting diode, image processing

　The response of a zirconia oxygen gas sensor was studied using an oxygen gauge apparatus. The transitional EMF of oxygen concentration cells with Pt electrodes were measured with air and standard gas at various temperatures. The result showed that the thinner the thickness of a zirconia electrolyte is, the faster the response of a sensor is.
　The diffusion model was proposed in order to estimate the relationship between the thickness and the response time of the sensor. A linear relation was obtained when the effective oxygen diffusion coefficients, which were defined by the model, were plotted with the Arrhenius plot. It was confirmed that the model was useful to estimate the response time.
Keywords: oxygen gas sensor, oxygen gauge apparatus, zirconia electrolyte, Pt electrode

Kazuo TSUKABAYASHI, Naotaka KATO and Sukeyasu KANNO

　Last 1989, ISHIKAWA High Technological Satellite Center in U.S.A. was founded at Northwestern University in Cicago. This year(1990 Fisical year), North Carolina State University was added in it. K.Tsukabayashi, N.Kato and S.Kanno(Researchers in The Industrial Research Institute of Ishikawa) visited both Universities from September to December and investigated the characteristics of Research Park in U.S.A..
　The information obtained are as follows;
1) Northwestern University/Evanston Research Park was composed of University, Basic Industry Research Laboratory, Tenants and Incuvators. Especially, University was the key station of Research Park on account of its subatantial faculty, facilities and computer services.
2) North Carolina Research Triangle Park was the biggest Research Park in the world and Computer network system "CONCERT" (Communication for North Carolina Education, Research and Technology) was efficient for researchers in this park.
Keywords: Research Park, Incuvators, Computer network system