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The Handicap Principle
23,49 € *
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The Handicap Principle ab 23.49 EURO A Missing Piece of Darwin's Puzzle

Anbieter: ebook.de
Stand: 02.06.2020
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The Handicap Principle
16,99 € *
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The Handicap Principle ab 16.99 EURO A Missing Piece of Darwin's Puzzle

Anbieter: ebook.de
Stand: 02.06.2020
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Alan Grafen
39,00 € *
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Alan Grafen is a Scottish ethologist and evolutionary biologist. He currently teaches and undertakes research at St John's College, Oxford. Along with regular contributions to scientific journals, Grafen is known publicly for his work as co-editor (with Mark Ridley) of the 2006 festschrift Richard Dawkins: How a Scientist Changed the Way We Think, honouring the achievements of his colleague and former academic advisor. He has worked extensively in the field of Biological game theory, and, in 1990, devised a model showing that Zahavi's well-known Handicap principle could theoretically exist in natural populations.

Anbieter: Dodax
Stand: 02.06.2020
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Reading Between the Packets
59,00 € *
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Revision with unchanged content. Wireless multihop networks exhibit a number of distinctive and interesting properties, making them a unique environment. This environment is very challenging for existing network protocols, in particular for the Internet protocol stack. For this reason the peculiarities of wireless multihop environ ments have most often been treated as a major handicap. Here, we look at them from a different angle: they can, in fact, often provide the basis for novel and unconventional solutions. Many challenges in wireless multihop net working can be tackled by making use of the network's specific properties. In this spirit, we propose solutions that communicate and co-ordinate actions implicitly, i.e., without dedicated information exchange. This design principle is applied to a number of research challenges in wireless multihop networks. The discussed approaches include mechanisms for unicast and multicast congestion control, end-to-end reliable transport, co-ordinated network coding, and offline time synchronization. This book addresses readers interes ted in computer networking and protocol design, in particular researchers and developers working on wireless multihop networks.

Anbieter: Dodax
Stand: 02.06.2020
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Handicap principle
39,00 € *
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The handicap principle is a hypothesis originally proposed in 1975 by biologist Amotz Zahavi to explain how evolution may lead to "honest" or reliable signaling between animals who have an obvious motivation to bluff or deceive each other. The handicap principle suggests that reliable signals must be costly to the signaler, costing the signaler something that could not be afforded by an individual with less of a particular trait. For example, in the case of sexual selection, the theory suggests that animals of greater biological fitness signal this status through handicapping behaviour or morphology that effectively lowers this quality. The central idea is that sexually selected traits function like conspicuous consumption, signalling the ability to afford to squander a resource simply by squandering it. Receivers know that the signal indicates quality because inferior quality signallers cannot afford to produce such wastefully extravagant signals.

Anbieter: Dodax
Stand: 02.06.2020
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The Handicap Principle
26,90 CHF *
zzgl. 3,50 CHF Versand

Ever since Darwin, animal behaviour has intrigued and perplexed human observers. The elaborate mating rituals, lavish decorative displays, complex songs, calls, dances and many other forms of animal signalling raise fascinating questions. To what degree can animals communicate within their own species and even between species? What evolutionary purpose do such communications serve? Perhaps most importantly, what can animal signalling tell us about our own non-verbal forms of communication? In The Handicap Principle, Amotz and Ashivag Zahavi offer a unifying theory that brilliantly explains many previously baffling aspects of animal signalling and holds up a mirror in which ordinary human behaviours take on surprising new significance. The wide-ranging implications of the Zahavis' new theory make it arguably the most important advance in animal behaviour in decades. Based on 20 years of painstaking observation, the Handicap Principle illuminates an astonishing variety of signalling behaviours in animals ranging from ants and ameba to peacocks amd gazelles. Essentially, the theory asserts that for animal signals to be effective they must be reliable, and to be reliable they must impose a cost, or handicap, on the signaller. When a gazelle sights a wolf, for instance, and jumps high into the air several times before fleeing, it is signalling, in a reliable way, that it is in tip-top condition, easily able to outrun the wolf. (A human parallel occurs in children's games of tag, where faster children will often taunt their pursuer before running). By momentarily handicapping itself—expending precious time and energy in this display—the gazelle underscores the truthfulness of its signal. Such signalling, the authors suggest, serves the interests of both predator and prey, sparing each the exhaustion of a pointless chase. Similarly, the enormous cost a peacock incurs by carrying its elaborate and weighty tail-feathers, which interfere with food gathering, reliably communicates its value as a mate able to provide for its offspring. Perhaps the book's most important application of the Handicap Principle is to the evolutionary enigma of animal altruism. The authors convincingly demonstrate that when an animal acts altruistically, it handicaps itself—assumes a risk or endures a sacrifice—not primarily to benefit its kin or social group but to increase its own prestige within the group and thus signal its status as a partner or rival. Finally, the Zahavis' show how many forms of non-verbal communication among humans can also be explained by the Handicap Principle. Indeed, the authors suggest that non-verbal signals—tones of voice, facial expressions, body postures—are quite often more reliable indicators of our intentions than is language. Elegantly written, exhaustively researched, and consistently enlivened by equal measures of insight and example, The Handicap Principle illuminates virtually every kind of animal communication. It not only allows us to hear what animals are saying to each other—and to understand why they are saying it—but also to see the enormously important role non-verbal behaviour plays in human communication.

Anbieter: Orell Fuessli CH
Stand: 02.06.2020
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The Answers Lie Within Us
54,90 CHF *
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This book suggests that religion, in its usual sense, can be replaced by something better, that the human spirit or subjectivity can be the subject of scientific study and that lack of purpose or design in the universe is not a handicap but a positive opportunity for intelligent beings to make of the universe and its contents what they reasonably can. The book breaks new ground in suggesting a radical alternative to religion. It offers a scientific and humanist alternative to religion which appeals to people's critical faculties rather than emotions or intuitions. It also challenges current views of causation and the principle of sufficient reason by stressing the subjectivity of our reasoning powers and clarifying these in relation to an independent external reality. It develops and elaborates a notion of the 'noosphere' within a theoretical system, this enables the notion to assume a scientific importance which it currently lacks because it is treated as an isolated, eccentric and rather mystical idea.

Anbieter: Orell Fuessli CH
Stand: 02.06.2020
Zum Angebot
The Answers Lie Within Us
56,90 CHF *
ggf. zzgl. Versand

This book suggests that religion, in its usual sense, can be replaced by something better, that the human spirit or subjectivity can be the subject of scientific study and that lack of purpose or design in the universe is not a handicap but a positive opportunity for intelligent beings to make of the universe and its contents what they reasonably can. The book breaks new ground in suggesting a radical alternative to religion. It offers a scientific and humanist alternative to religion which appeals to people's critical faculties rather than emotions or intuitions. It also challenges current views of causation and the principle of sufficient reason by stressing the subjectivity of our reasoning powers and clarifying these in relation to an independent external reality. It develops and elaborates a notion of the 'noosphere' within a theoretical system, this enables the notion to assume a scientific importance which it currently lacks because it is treated as an isolated, eccentric and rather mystical idea.

Anbieter: Orell Fuessli CH
Stand: 02.06.2020
Zum Angebot
The Handicap Principle
19,90 CHF *
ggf. zzgl. Versand

Ever since Darwin, animal behavior has intrigued and perplexed human observers. The elaborate mating rituals, lavish decorative displays, complex songs, calls, dances and many other forms of animal signaling raise fascinating questions. To what degree can animals communicate within their own species and even between species? What evolutionary purpose do such communications serve? Perhaps most importantly, what can animal signaling tell us about our own non-verbal forms of communication? In The Handicap Principle, Amotz and Ashivag Zahavi offer a unifying theory that brilliantly explains many previously baffling aspects of animal signaling and holds up a mirror in which ordinary human behaviors take on surprising new significance. The wide-ranging implications of the Zahavis' new theory make it arguably the most important advance in animal behavior in decades. Based on 20 years of painstaking observation, the Handicap Principle illuminates an astonishing variety of signaling behaviors in animals ranging from ants and ameba to peacocks and gazelles. Essentially, the theory asserts that for animal signals to be effective they must be reliable, and to be reliable they must impose a cost, or handicap, on the signaler. When a gazelle sights a wolf, for instance, and jumps high into the air several times before fleeing, it is signaling, in a reliable way, that it is in tip-top condition, easily able to outrun the wolf. (A human parallel occurs in children's games of tag, where faster children will often taunt their pursuer before running). By momentarily handicapping itself--expending precious time and energy in this display--the gazelle underscores the truthfulness of its signal. Such signaling, the authors suggest, serves the interests of both predator and prey, sparing each the exhaustion of a pointless chase. Similarly, the enormous cost a peacock incurs by carrying its elaborate and weighty tail-feathers, which interfere with food gathering, reliably communicates its value as a mate able to provide for its offspring. Perhaps the book's most important application of the Handicap Principle is to the evolutionary enigma of animal altruism. The authors convincingly demonstrate that when an animal acts altruistically, it handicaps itself--assumes a risk or endures a sacrifice--not primarily to benefit its kin or social group but to increase its own prestige within the group and thus signal its status as a partner or rival. Finally, the Zahavis' show how many forms of non-verbal communication among humans can also be explained by the Handicap Principle. Indeed, the authors suggest that non-verbal signals--tones of voice, facial expressions, body postures--are quite often more reliable indicators of our intentions than is language. Elegantly written, exhaustively researched, and consistently enlivened by equal measures of insight and example, The Handicap Principle illuminates virtually every kind of animal communication. It not only allows us to hear what animals are saying to each other--and to understand why they are saying it--but also to see the enormously important role non-verbal behavior plays in human communication.

Anbieter: Orell Fuessli CH
Stand: 02.06.2020
Zum Angebot