Calibration of 253. 7nm Irradiance

Simplifying irradiance independent color calibration

An important component of camera calibration is to derive a mapping of a camera’s output RGB to a deviceindependent color space such as the CIE XYZ or sRGB. Commonly, the calibration process is performed by photographing a color chart in a scene under controlled lighting and finding a linear transformation M that maps the chart’s colors from linear camera RGB to XYZ. When the XYZ values corresp...

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Tradeoffs centrally mediate the expression of human adaptations. We propose that tradeoffs also influence the prevalence and forms of human maladaptation manifest in disease. By this logic, increased risk for one set of diseases commonly engenders decreased risk for another, diametric, set of diseases. We describe evidence for such diametric sets of diseases from epidemiological, genetic and mo...

The calibration of scanning monochromators for the measurement of absolute irradiance.

Certain approximations commonly used in the absolute calibration of a scanning monochromator are examined in terms of the response of the instrument to a monochromatic input. The absolute irradiance due to any spectral feature in the neighborhood of lambda(0) is commonly computed from the expression W = AB(lambda(0))/H(lambda(0)) where A is the area of the spectral feature as recorded by the mo...

248-253 Forum

Family Planning Perspectives of having once measured a very different part of the family-building cycle. Meanwhile, the shift in political and policy interest away from the end toward the beginning of the cycle means that the NSFG is measuring a much more complicated social reality. For an earlier generation of women (and men), these surveys did indeed measure what they were supposed to, namely...

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