A model for group-size-dependent behaviour decisions in insects using an oscillator network.

Aggressive behaviour within pairs of male crickets leads to the establishment of a dominance hierarchy. Defeated males avoid their victorious adversaries for several hours before regaining aggressiveness. However, the defeated male does not regain aggressiveness if repeated fighting occurs.

[Cognition for visual perception of a student apprentice of dental hygiene to the presence of a parent beside the dental chair for dental treatment. The study of cognitive style and personality traits].

With a view to knowing how the dental hygienist looks at and makes cognition of a mother who is kept standing by her child just receiving his dental treatment, cognition from visual perception was examined, by dental hygienist apprentice. Possible difference in scene cognition process according to different cognition style of these subjects was also analyzed from the elements of eye-movement. On the basis of the results of a YG character test performed together, cognition styles and personality traits were examined additionally.

[Cognition for visual perception of a student apprentice of dental hygiene to the presence of a parent beside the dental chair for dental treatment].

With a view to finding out how the dental hygienist looks at and recognizes the changes in facial expression and behavior of a mother who is staying by her child just receiving dental care in the treating room, actions which the mother takes near her child were recorded and subjected to observation by a dental-hygienist apprentice. The eye movements of the apprentice were then recorded and analyzed, using the Visicon-Eye-Camera. The results obtained are as follows: 1.

A new method of measuring red cell deformability and the effects of pentoxifylline.

The effect of pentoxifylline on red cell deformability was studied using a new device of a polycarbonate membrane filter ("Nuclepore') and a differential pressure type transducer. Differential pressure fluctuations due to the passage of red cells through the "Nuclepore' membrane were recorded as a differential pressure curve of red cell filtration. Red cell deformability was measured with a diluted red cell suspension (10 x 10(4)/mm3) in this buffered NaCl solution of normal osmotic pressure, 300m0sm/l as a suspending medium.