James R. Neil

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We compare the behavior of a GA with and without crossover. A simple GA with crossover can have two stable fixed points (bistability) on the single-peak landscapes for string lengths at least 8. There are catastrophic transitions from one to two and back to one stable fixed point as the mutation rate increases. Crossover also causes the fixed-point(More)
The frequency of late sequelae in 454 patients sterilised by laparoscopy and diathermy or by abdominal tubal ligation was compared with that in 154 controls whose husbands had had a vasectomy. Results showed an increase in menstrual loss and pain with menstruation in the sterilised groups, especially if this had been done by diathermy and division under(More)
Endoscopy has enhanced the science and practice of obstetrics and gynaecology immeasurably over the last decade. There is an established place for most of these procedures, especially in the case of laparoscopy. The hazard of laparoscopy should be able to be further reduced. In the case of laparoscopic sterilization, probably the most conservative method(More)
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