Analysis of the silkworm's shape distribution and serial shape changes in the course of spinning
1998
Miura, M. (Shinshu Univ., Ueda, Nagano (Japan). Faculty of Textile Science) | Pan, Z.J. | Aoyama, S. | Morikawa, H. | Mochizuki, S.
After a silkworm's body shape was represented by two variables, the characteristics of their distributions were investigated for different kinds of species. The results showed that they wee significantly different from normal distributions in more than half the cases. Shape difference between silkworms was also investigated by using two shape variables at different spinning stages. As a result, it was found that there were significant differences both between individuals and spinning stages. We than analyzed serial changes of two shape values. A time-series model was used to express the changes of the front part of a silkworm's body shape. The results showed that serial shape changes of a silkworm's body could be represented by an appropriate bivariate autoregressive model
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