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Both the logistic map and the sine map are one-dimensional maps that map the interval [0, 1] to [0, 1] and satisfy the following property, called unimodal . = =. The map is differentiable and there exists a unique critical point c in [0, 1] such that ′ =. In general, if a one-dimensional map with one parameter and one variable is unimodal and ...
In 1946, the first live demonstration of tonotopic organization in auditory cortex occurred at Johns Hopkins Hospital. [5] More recently, advances in technology have allowed researchers to map the tonotopic organization in healthy human subjects using electroencephalographic (EEG) and magnetoencephalographic (MEG) data.
The top two maps are for December to February, the bottom two are for June to August. [ 1 ] El Niño–Southern Oscillation ( ENSO ) is a global climate phenomenon that emerges from variations in winds and sea surface temperatures over the tropical Pacific Ocean .
Constructing new housing decreases the cost of rent and the price of homes in both the immediate neighborhood and in the city as a whole. In real estate economics, "supply skepticism" leads many Americans to misunderstand the effect of increasing the supply of housing on housing costs. The misconception is unique to the housing market. [214] [215]
Hertz's directional spark transmitter (center), a half-wave dipole antenna made of two 13 cm brass rods with spark gap at center (closeup left) powered by a Ruhmkorff coil, on focal line of a 1.2 m x 2 m cylindrical sheet metal parabolic reflector. [23] It radiated a beam of 66 cm waves with frequency of about 450 MHz.
A chirp is a signal in which the frequency increases (up-chirp) or decreases (down-chirp) with time. In some sources, the term chirp is used interchangeably with sweep signal . [ 1 ] It is commonly applied to sonar , radar , and laser systems, and to other applications, such as in spread-spectrum communications (see chirp spread spectrum ).
Line of sight (LoS) propagation from an antenna. Line-of-sight propagation is a characteristic of electromagnetic radiation or acoustic wave propagation which means waves can only travel in a direct visual path from the source to the receiver without obstacles. [1]
[38]: 92–93 These maps also feature locations where different types of timber can be gathered, while two of the maps state the distances in mileage to the timber sites. [38]: 93 In light of this, these maps are perhaps the oldest economic maps in the world since they predate Strabo's economic maps. [38]: 93