منابع مشابه
The Re-Invention of Sociology of Community
In today’s society the term ‘Community’ is frequently used. Politicians, religious leaders, policy makers and the media are repeatedly utilizing the concept to describe a particular scenario. Traditionally, sociologists have been fascinated with community, within a theoretical and geographical context. At the centre of the community is the debate of how external agencies work with the local com...
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Zero-knowledge proofs are proofs that are both convincing and yet yield nothing beyond the validity of the assertion being proven. Since their introduction about twenty years ago, zero-knowledge proofs have attracted a lot of attention and have, in turn, contributed to the development of other areas of cryptography and complexity theory. We survey the main deenitions and results regarding zero-...
متن کاملThe structure of invention
This paper explores the process by which radically novel technologies – ones such as radar, the turbojet, or the polymerase chain reaction – come into being. It shows that this process – “invention” – has a certain logical structure common to all cases. Invention is a process of linking some purpose or need with an effect that can be exploited to satisfy it. It may begin with a purpose or need ...
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ژورنال
عنوان ژورنال: Ethnobotany Research and Applications
سال: 2005
ISSN: 1547-3465
DOI: 10.17348/era.3.0.109-112