منابع مشابه
Land Tenure
Farming in sub-Saharan Africa outside South Africa typically takes place on small plots cultivated by individuals. The land tenure system is often described as 'communal', meaning that land is owned by a kin-based or political group and that individuals obtain the right to cultivate through their membership in that group. If a generalization is possible about the process through which people ob...
متن کاملReplacing CASSANDRA
We criticize our CASSANDRA architecture as innexible and incapable of supporting communications in any realistic sense. We argue for our position and propose a new agent structure.
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ژورنال
عنوان ژورنال: Nature
سال: 1988
ISSN: 0028-0836,1476-4687
DOI: 10.1038/331476a0