Reproductive wastage was investigated over two seasons among sheep grazing non-oestrogenic pastures. The results show that approximately 25 percent of the ewes were not cycling when the rams were joined. Ovulation rates were consistently low, averaging 1.09, and fertilization rates consistently high, averaging 93 percent. Embryonic mortality varied widely between properties and years, but avera...

This paper discusses research results useful for producing a system which converts a two-dimensional computer sketch of a single homogeneous polyhedral object into a boundary representation solid model. An overview of our approach to such a system and its main algorithms is pre-

T h i s paper i s i n t e n d e d t o d raw a t t e n t i o n t o a l i t e r a t u r e i n P h i l o s o p h y t h a t w o u l d b e o f g r e a t use and i n t e r e s t t o r e s e a r c h e r s a t t e m p t i n g t o s i m u l a t e n o n d e d u c t i v e r e a s o n i n g . Two m o d e l s o f such r e a s o n i n g a r e d i s c u s s e d , and t h e k e r n e l r o l e o f t h e c o n ...

A report of mammary development in 6-month-old ewe lambs grazing lucerne on a commercial farm in North Otago provided an opportunity to investigate the possibility to use this as a tool to detect oestrogenic lucerne pastures. Of the 36 ewe lambs grazing lucerne at this farm, protruding mammary glands were visible in 19. In contrast, none of the 22 ewe lambs grazing grass had protruding mammary ...

Many of the bottlenecks relative to computational uid dynamics occur because the input geometric model is not directly suitable for analysis. There is a need for mathematical criteria for admissible models and algorithms to determine when those criteria have been met. These results are often presented in more theoretical scientiic forums rather than within engineering venues. This interdiscipli...

The relation between thermodynamic phase transitions in classical systems and topology changes in their configuration space is discussed for a one-dimensional, analytically tractable solid-on-solid model. The topology of a certain family of submanifolds of configuration space is investigated, corroborating the hypothesis that, in general, a change of the topology within this family is a necessa...

Lamb production was measured over an 18 month period from 30 Javanese thintail (JTT) and 30 Border Leicester x Merino (BLM) ewes run continually with rams of several breeds. The study was carried out in West Java, Indonesia. One hundred and forty-eight lambs were born to JTT and BLM ewes respectively, the difference being associated with both a larger number of lambings and a higher incidence o...