SUMMARY. This paper presents a number of measures of genealogical relationships, based on recent researches in social anthropology dealing with kinship. The relations existing between different measures are explained. In particular, a new method of estimating genetic linkage is suggested. The...

The traditional problem often called “electricity development” is to improve and expand services from an established monopolistic electricity supplier. The lack of an effective dominant utility, however, is a defining condition for the 1.4 billion people without access for electricity, the...