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The hexaxial reference system is a diagram that is used to determine the heart's electrical axis in the frontal plane. The hexaxial reference system, better known as the Cabrera system, is a convention to present the extremity leads of the 12 lead electrocardiogram, [1] that provides an illustrative logical sequence that helps interpretation of the ECG, especially to determine the heart's ...
The TWI has been used to study spatial scale effects on hydrological processes. The topographic wetness index (TWI) was developed by Beven and Kirkby [3] within the runoff model TOPMODEL. Although the topographic wetness index is not a unitless number, it is sufficiently approximate that its interpretation doesn't rely on its physical units.
English: The twelve leads of a twelve-lead electrocardiogram are shown here with the contiguous leads shown in the same color: Pink — aVR; Orange — septal leads (V1, V2) Yellow — inferior leads (II, III, aVF) Green — lateral leads (I, aVL, V5, V6) Blue — anterior leads (V3, V4)
Multi-vari charts were first described by Leonard Seder in 1950, [1] [2] though they were developed independently by multiple sources. They were inspired by the stock market candlestick charts or open-high-low-close charts. [3] As originally conceived, the multi-vari chart resembles a Shewhart individuals control chart with the following ...
Wellens' syndrome is an electrocardiographic manifestation of critical proximal left anterior descending (LAD) coronary artery stenosis in people with unstable angina. ...
Tolerable weekly intake (TWI) estimates the amount per unit body weight of a potentially harmful substance or contaminant in food or water that can be ingested over a lifetime without risk of adverse health effects. [1] [2] TWI is generally preceded by "provisional" to indicate insufficient data exists, increasing uncertainty. [3]
A fan chart is made of a group of dispersion fan diagrams, which may be positioned according to two categorising dimensions. A dispersion fan diagram is a circular diagram which reports the same information about a dispersion as a box plot : namely median , quartiles , and two extreme values.
The "chart" actually consists of a pair of charts: one, the individuals chart, displays the individual measured values; the other, the moving range chart, displays the difference from one point to the next.