This study aimed to economic evaluation of ostrich production in Sistan region by the use fuzzy conception in five platforms including (1 bird, 30 birds, 50 birds, 100 birds and 200 birds). The result showed that amount of benefit cost for 30, 50, 100 and 200 was 0.20, 0.26, 0.30, 0.31 and present value was 105, 549, 1460, 2927 million rials. According to the results obtained from present value...

What is it like doing science in India? Let me make the operating rules clear before I answer. Every question about India has two ‘correct’ answers which say exactly opposite things. Furthermore, each of the one billion Indians will disagree with one another and with what any outsider has to say about India. Being a scientist in India is wonderful. Really. Every good grant proposal gets funded....

One hundred years ago this Sunday, on November th, , Bertrand Russell delivered the Inaugural Address to the Aristotelian Society’s thirty-fourth session – it was Russell’s second year as President. His lecture was entitled ‘On the Notion of Cause’, and as the Proceedings here note, a discussion followed in which a number of members took part. Outside the Aristotelian Society, the discussion co...