Changes between Version 5 and Version 6 of doc/tec/biomet/uv_basic_model

Timestamp:

Nov 22, 2018 4:02:16 PM (6 years ago)

Author:

Schrempf

Comment:

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doc/tec/biomet/uv_basic_model

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 Figure 1.1: Schematic diagram of the quantities radiance (a) and (b) and irradiance (c). In (a) the receiving area dA is oriented normal to the source, while in (b) the angle between the normal of the area and the incident beam is 45°. The diagram (c) visualizes the irradiance, where radiation of any origin is received by the area element dA.\\\\
  
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+{{{#!td style="vertical-align:top; text-align:left"
 == Radiation Input for Exposure Model ==
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-{{{#!td style="vertical-align:center; text-align:left"
 To calculate the biologically-weighted UV exposure the spectral radiance L is weighted with a biological action spectrum. In this model, the action spectra for erythema, defined by the CIE (1998),and the action spectra for the vitamin D3 synthesis is used.
 
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+{{{#!td style="vertical-align:top; text-align:left"
 == Human Geometry ==
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 For the calculation of the exposure, the human geometry is taken into account. This is done by using projection areas of all uncovered surface areas of the human. For the calculation of the projection areas a, 3D voxel (volumetric pixel) model, segmented from data of a whole-body computed tomography scan of a patient, is used. The person was 38 years old, 176 cm of height and had a weight of 68.9 kg, thus approximately representing an average male adult (Valentin, 2002). 
 In Figure 2.2, a two-dimensional projection of the voxel model is shown for three different viewpoints. Additionally, the projection areas of a human with no clothing, summer clothing and winter clothing are visualized as function of the azimuth and zenith angle in form of polar plots.\\\\