Two Vows of Expediency

On taking vows in two priesthoods, scientific and christian.

I come as a practicing scientist and teacher and like most teachers I collect exam questions. Two of my favorites are as follows. 1. You have been provided with a razor blade, a piece of gauze, and a bottle of alcohol. Remove your appendix. Do not suture until your work has been inspected. You have fifteen minutes. 2. Define the Universe and give three examples. The question I pose to you tonig...

Absolute Expediency and Imitative Behaviour

This paper analyses a model of learning by imitation, where besides the decision maker, there is a population of individuals facing the same decision problem. We analyse a property called Absolute Expediency, which requires that the decision maker’s expected payo¤ increases from one round to the next for every decision problem and every state of the population. We give a simple characterisation...

synthesis of platinum nanostructures in two phase system

چکیده پلاتین، فلزی نجیب، پایدار و گران قیمت با خاصیت کاتالیزوری زیاد است که کاربرد های صنعتی فراوانی دارد. کمپلکس های پلاتین(ii) به عنوان دارو های ضد سرطان شناخته شدند و در شیمی درمانی بیماران سرطانی کاربرد دارند. خاصیت کاتالیزوری و عملکرد گزینشی پلاتین مستقیماً به اندازه و- شکل ماده ی پلاتینی بستگی دارد. بعضی از نانو ذرات فلزی در سطح مشترک مایع- مایع سنتز شده اند، اما نانو ساختار های پلاتین ب...

The STAR automaton: expediency and optimality properties

We present the STack ARchitecture (STAR) automaton. It is a fixed structure, multiaction, reward-penalty learning automaton, characterized by a star-shaped state transition diagram. Each branch of the star contains D states associated with a particular action. The branches are connected to a central "neutral" state. The most general version of STAR involves probabilistic state transitions in re...

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