منابع مشابه
Have tRNA, will travel.
T he processing of tRNA is deceptively complicated from the standpoint of both biochemistry and spatial organization. Every generation in yeast, 3–6 million tRNAs are processed (1), 10 times the number of rRNAs and 60–100 times the number of mRNAs (2). Processing of tRNAs requires 60 polypeptides to catalyze removal of the 5 leader sequence, trimming of the 3 trailer sequence, splicing of the i...
متن کاملHave virus, will travel.
prevent introductions from region to region. Meanwhile, the international community has failed to prevent a stream of species from flowing around the world, with the exception of a 1951 agreement to prevent introductions of plant pests. President Clinton's executive order creates a federal interagency Invasive Species Council whose members include the secretaries of state, treasury, defense, th...
متن کاملWhy Robots Will Have Emotions
Emotions involve complex processes produced by i n te rac t i ons between motives/ b e l i e f s / percepts , e t c . E.g. real or imagined f u l f i l m e n t or v i o l a t i o n of a mot ive/ or t r i g g e r i n g of a 'mot ive-genera tor ' / can d i s tu rb processes produced by other mot ives. To understand emotions/ t he re fo re / we need to understand motives and the types of processes...
متن کاملCan a Robot Have Free Will?
Using insights from cybernetics and an information-based understanding of biological systems, a precise, scientifically inspired, definition of free-will is offered and the essential requirements for an agent to possess it in principle are set out. These are: (a) there must be a self to self-determine; (b) there must be a non-zero probability of more than one option being enacted; (c) there mus...
متن کاملLibet Do We Have Free Will ?
I have taken an experimental approach to this question. Freely voluntary acts are preceded by a specific electrical change in the brain (the ‘readiness potential’, RP) that begins 550 ms before the act. Human subjects became aware of intention to act 350–400 ms after RP starts, but 200 ms. before the motor act. The volitional process is therefore initiated unconsciously. But the conscious funct...
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ژورنال
عنوان ژورنال: BMJ
سال: 1986
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.293.6562.1641