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A bat detector is a device used to detect the presence of bats by converting their echolocation ultrasound signals, as they are emitted by the bats, to audible frequencies, usually about 120 Hz to 15 kHz.
Ultrasound causes flying lacewings to fold their wings and drop, an effective maneuver for evading capture by bats. [22] Some tettigoniids use a similar strategy, [23] although other species respond much like crickets. [24] Several other insects have sensitive ultrasonic hearing that probably is used in bat evasion, but direct evidence is not ...
A detailed introduction of metaheuristic algorithms including the bat algorithm is given by Yang [4] where a demo program in MATLAB/GNU Octave is available, while a comprehensive review is carried out by Parpinelli and Lopes. [5] A further improvement is the development of an evolving bat algorithm (EBA) with better efficiency. [6]
The term echolocation was coined by 1944 by the American zoologist Donald Griffin, who, with Robert Galambos, first demonstrated the phenomenon in bats. [1] [2] As Griffin described in his book, [3] the 18th century Italian scientist Lazzaro Spallanzani had, by means of a series of elaborate experiments, concluded that when bats fly at night, they rely on some sense besides vision, but he did ...
Over a nine-night experiment the bats attacked non-clicking control moths and clicking Bertholdia trigona – moths that were selected for their extraordinary clicking abilities. Bats had substantial difficulty catching the clicking moths compared to silent controls, and ate the B. trigona moths when they had the opportunity, thus refuting the ...
Electronic pest control is the name given to any of several types of electrically powered devices designed to repel or eliminate pests, usually rodents or insects. Since these devices are not regulated under the Federal Insecticide, Fungicide, and Rodenticide Act in the United States, the EPA does not require the same kind of efficacy testing that it does for chemical pesticides.
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