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An EPC Forecasting Method for Stock Index Based on Integrating Empirical Mode Decomposition, SVM and Cuckoo Search Algorithm
- Computer Science
- 2014
The empirical study shows the proposed approach by means of synchronously predict the prediction error which used to correct the preliminary predicted values has better prediction precision than other five competing approaches.
References
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Costs to host defences are demonstrated such that once the parasite goes extinct on a particular host species, defence mechanisms are selectively disadvantageous.
Strategic Variation in Mobbing as a Front Line of Defense against Brood Parasitism
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Egg mimicry by cuckoos Cuculus canorus in relation to discrimination by hosts
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It is shown by experiment that host discrimination against badly matching eggs is a selective force in gens maintenance and that cuckoos lay a better mimetic egg where the host species is apparently more discriminating.
Reed warblers discriminate cuckoos from sparrowhawks with graded alarm signals that attract mates and neighbours
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This book discusses the co-evolution of host defences and Common Cuckoo trickery, as well as one hundred species of brood parasitic birds and some puzzles.
Cuckoo–hawk mimicry? An experimental test
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The first evidence that some small birds respond to common cuckoos Cuculus canorus as if they were sparrowhawks Accipiter nisus is provided, and tits showed similarly strong alarm to barred and unbarred hawks, and little alarms to barred doves, suggesting that naive small birds can mistake cuckoo for hawks.
The Adaptive Significance of Avian Mobbing V. An Experimental Test of the ‘Move On’ Hypothesis
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This paper presents the first experimental study of the effects of mobbing on predators. Two captive little owls Athene noctua and a tawny owl Strix aluco, having stabilized activity patterns and…
Cost of mobbing call to breeding pied flycatcher, Ficedula hypoleuca
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The results of the present study indicate that repeated conspicuous mobbing calls may carry a significant cost for birds during the breeding season.
The Cuckoo
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I DO not know if the hibernating of swallows and other summer visitors is still a debated question or not, but the following account of a cuckoo may be of interest to some of your readers.
Responses of breeding Reed Warblers Acrocephalus scirpaceus to mounts of Sparrowhawk Accipiter nisus, Cuckoo Cuculus canorus and Jay Garrulus glandarius
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Mounts of a Cuckoo Cuculus canorus, a Sparrowhawk Accipiter nisus and a Jay Garrulus glandarius were presented at nests of Reed Warbler Acrocephalus scirpaceus at all breeding stages to demonstrate that Reed Warblers can tell Cuckoos from Sparrowhawks, as can many non-host species.