Read e-book online A Cybernetic View of Biological Growth: The Maia Hypothesis PDF

By Tony Stebbing

ISBN-10: 0511933819

ISBN-13: 9780511933813

ISBN-10: 0521199638

ISBN-13: 9780521199636

Maia is the tale of an idea, and its improvement right into a operating speculation, that gives a cybernetic interpretation of the way development is managed. progress on the lowest point is managed by way of regulating the speed of progress. entry to the output of keep an eye on mechanisms is equipped by way of perturbing the starting to be organism, after which filtering out the results to development price. The output of the expansion keep watch over mechanism is then available for interpretation and modeling. Perturbation experiments were used to supply interpretations of hormesis, the neutralization of inhibitory load and bought tolerance to poisonous inhibition, and catch-up development. The account starts off with an advent to cybernetics overlaying the legislation of development and inhabitants raise in animals and guy and describes this new method of entry the keep an eye on of development techniques. This ebook is appropriate for postgraduate scholars of organic cybernetics and researchers of organic development, endocrinology, inhabitants ecology and toxicology.

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We know now 19 20 Growth unlimited: blooms, swarms and plagues that they are photosynthetic and live in the photic zone, and then as they die fall slowly into the abyss. 1b). Oceanographers, guided by satellite images, follow and sample the blooms as they are carried by the North Atlantic Drift. South of Greenland, the current spins off parts of the bloom, hundreds of kilometres across, like a spiral galaxy wheeling slowly in space. 4 million square kilometres of the world’s oceans. Few examples in nature offer such a wide range of scales between the smallness of the organism on the one hand, and the enormity of their collective mass on the other.

It was introduced with American oysters to the east coast oyster beds, and has now reached densities that compete with oysters for planktonic food and smother them with the mass of their shells. This chain-forming limpet has the fitting name of Crepidula fornicata because the males, which are smaller, wander over the chain of individual shells, fertilising all the females, which are larger. The species has spread widely and multiplied rapidly, with high densities of 450 per square metre that are unknown in its native American habitats.

Here then’, Darwin wrote, ‘I had at last got a theory by which to work’. His theory was first written as a brief abstract in 1842, and then at greater length two years later. In 1856 his friend, the geologist Charles Lyell (1797–1875), advised Darwin to write up his ideas more fully. But in 1858, as had been feared, his ‘plans were overthrown’ on receipt of an essay by the young Alfred Russel Wallace, then on an expedition in the Moluccas. Wallace had his revelation when suffering from a severe attack of malaria, lying wrapped in blankets during a cold fit, even though the ambient temperature was 31°C.

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A Cybernetic View of Biological Growth: The Maia Hypothesis by Tony Stebbing

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