The structures of musical scores and sentences are similar to each other. In both cases the individual symbols, such as musical tones, rests, letters and so on, make up groups, namely phrases and words. Musical scores consist of phrases and sentences consist of words. The purpose of this paper is to clarify the human visual information capacity for musical tones and to compare it with that for letters. The eye movements of the participants were measured by the eye movement measuring system, Talk Eye. By analysing the fixation points, the visual information capacities were obtained. It was found that at a single glance about 1 musical tone was recognized when a series of musical tones in random order was shown. The capacity for a musical score was about 3 symbols. For a series of random characters about 2 symbols and for sentences more than 8 symbols were recognized. In terms of information value, about 6.5 bits of visual information were percieved from a series of random musical tones. From a musical score, about 19 bits of information were perceived. On the other hand, when a series of random characters was shown, about 11 bits of information were perceived, and when sentences were shown, about 62 bits were perceived.

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Recently activities around coastal areas have extended to ocean development and various life styles of humanity. People playing on seaside have been exposed to a lot of ultraviolet radiation. The effect of ultraviolet radiation in coastal zones is higher than that in terrestrial zones due to the reflection from the sea surface and sand. And ultraviolet radiation induces human erythema, melanization and photokerato-conjunctiva which harms cornea or conjunctiva. This report shows measurements of ultraviolet reflectance on the sand in order to investigate the relationship between reflectance and sand components. From the measurement results the ultraviolet reflectance on sand is about 5-31%, and can be classified by sand's lightness. As sand's lightness becomes higher, the ultraviolet reflectance increases.

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An experimental task was used to examine the factors below as a means of evaluating the transference of learning that is seen when workers are trained continuously over a fixed period (6 days) to perform the same task by application of a method wherein the differences of individual periods in the process of achieving learning can be understood quantitatively, and the worker's learning status can be evaluated by the degrees of achievement Q.
(1) Numerical analysis was performed for the transference of the degree of learning of each subject by applying a tendency equation and work achievement Q.
(2) Each of the parameters of the tendency equation decreases with the increase in learning (days worked).
(3) A model was proposed by which the transferense of learning was evaluated by the work achievement Q obtained from the rate of variability δ and tendency index b.
(4) When the transference of learning is evaluated by the work achievement Q, the value of Q will increase with the increase in the degree of learning.

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This paper reports a three-dimensional measurement method of a subject by use of an epipolar line and curves taken on the subject according to the principle of photogrammetry. The paper first described development of an analytical theory, follwed by experiments carried out according to the theory. For the experiments, a plaster statue was photographed by a VTR camera, and from its digital images, a three-dimensional measurement of the statue was made. As the result of the experiments, it was found that the use of this analytical theory would be effective.

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Fatigue in the industrial work is considered to be more able to estimate by inspecting the three sides synthetically—physiological functions expressed by standard score, operation capacities, and subjective symptoms.
In this experiment, the rest pause is inspected and a relative measure to estimate the fatigue is calculated by the VDT work (visual search task). There are totally 5 combinations between the continuous working time (50 minutes) and the rest pause (5, 10, 15, 20, 25 minutes). As the result, in the case that the rest pause is 15 minutes, it is considered to be most effective. And besides, the relative measure calculated is considered to be more effective to inspect fatigue grade in timephase transition and each combinations than synthetic estimation of fatigue.

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The purpose of this research is to find out the difference of the pilot's scanning behavior among flight maneuvers, and relationship between scanning behavior and subjective rating score of flight maneuvers. Eight fighter pilots' scanning data using the flight simulator with CGI visual system, were recorded by the NAC eye mark recorder model five. The simulator flights were formed of eleven maneuvers that were take-off, climb, level-off, straight and level flights, change air speed, loop, minimun time turns, join up for a leader aircraft, formation flights in trail position, TACAN approach and landing.
The results were as follows: (1) The mean dwell times during maneuvers were the same as the shortest dwell times of pilots. (2) The mean dwell times on instruments were the same on each maneuver. (3) The flights with most of visual information getting from the instrument and slower velocity of eye movements, had a tendency that to reduce subjective tension which compared simulator flights with actual aircraft flights, simulator flights fatigue and difficulty. (4) The flights with shorter dwell times on outside field of view and longer on instrument had a tendency to lower score of subjective tension.

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In order to evaluate the relation between the texture of food and its preference, the preference of liquid, gel and solid materials with salty or sweet taste was examined among university students. Experiment 1: Most prefered concentrations of NaCl and sucrose liquid were 0.59% and 3.96%, respectively. To these liquids, 2.5% gelatine was added, and liquid, gel and solid materials were made. For physically equivalent concentration, a significant preference for solid material to liquid and gel material was shown for both salty (NaCl) and sweet (sucrose) taste. Experiment 2: For perceptually equivalent concentration, solid material was prefered to liquid material as well as for physically equivalent concentration. Experiment 3: When monosodium glutamate (MSG), which has been considered to be a taste enhancer, was added to salty and sweet material, the solid material was prefered to the liquid and the gel material for a mixture of NaCl and MSG, but the gel was most prefered for a mixture of sucrose and MSG for physically equivalent concentration. Experiment 4: For perceptually equivalent concentration, the difference of preference between solid and gel for the mixture of NaCl and MSG was not seen. For the mixture of sucrose and MSG the gel was prefered to liquid.
These results suggested that for salty and sweet taste solid material was likely to be prefered to liquid and gel material, but in the condition with MSG the preference of food texture was changed, based on the taste qualities and the concentration.

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Several years ago, a memory resident program for operating timing information for an NEC PC-9800 series personal computer was developed. Using timer interrupt of PC-9800, this system records events with a time stamp, such as a hitting and a releasing of a key, an action of a disk drive, and an update of the text on the display screen. The recording events are raw information of computer hardware, this system can not work on other computers. On the other hand, there are many IBM compatible computers and their softwares. A new system for PC-9800 and IBM compatible computers is developed. By using the new system, ergonomic experiments program utilizing timing information can be realized.

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