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- Vector-valued entire functions of bounded index satisfying a differential equation
- Bounded index; Cn-valued functions; entire functions; linear differential equations.
- The concept of complex valued entire functions of bounded index is extended to Cn-valued entire functions by replacing the absolute value in the definition of an entire function of bounded index by the maximum of the absolute values of the...
- Journal of Research of NIST and Predecessor Publications
- Vault Test 1920
- Photographs; History; Metrology; 1920s
- In 1920 NIST built, then promptly destroyed, a series of reinforced concrete vaults for the Federal Reserve Board. The goal was to determine the thickness of concrete and type of reinforcement that would most economically produce the best...
- Historic Images
- VASIR: An Open-Source Research Platform for Advanced Iris Recognition Technologies
- benchmark; biometrics; feature extraction; image quality; iris recognition; open-source; research platform; segmentation; VASIR.
- The performance of iris recognition systems is frequently affected by input image quality, which in turn is vulnerable to less-than-optimal conditions due to illuminations, environments, and subject characteristics (e.g., distance, movement,...
- Journal of Research of NIST and Predecessor Publications
- Various photo-electrical investigations
- Journal of Research of NIST and Predecessor Publications
- Various modifications of thermopiles having a continuous absorbing surface
- Journal of Research of NIST and Predecessor Publications
- $Variations in refractive index of CO2-free dry air and a statistical correlation with solar...$
- Variations in refractive index of CO2-free dry air and a statistical correlation with solar activity
- Journal of Research of NIST and Predecessor Publications
- Variations caused in heating curves of glass by heat treatment
- Journal of Research of NIST and Predecessor Publications
- Variational solution for the admittance of a long cylindrical antenna
- Journal of Research of NIST and Predecessor Publications
- Variation of resolving power and t ype of test pattern
- lens, emulsion, resolving power, camera, test pattern
- The plane of best average definition is located for a number of lenses of a type used in airplane mapping cameras. Three different types of test pattern are used for each lens. These patterns are the long-line, short-line, and annulus. Results of...
- Journal of Research of NIST and Predecessor Publications
- Variation of photographic sensitivity with different light sources
- Journal of Research of NIST and Predecessor Publications
- Variation of peak temperature with heating rate in differential thermal analysis
- Journal of Research of NIST and Predecessor Publications
- Variation of glass temperature with pressure in polypropylene
- By measurement of the specific volume of polypropylene as a function of temperature at various pressures, the variation of glass temperature with pressure, dTg/dP, was determined. Within experimental error the magnitude of this quantity is the same...
- Journal of Research of NIST and Predecessor Publications
- Variation of absorptance-curve shape with changes in pigment concentration
- Absorption; adaptation; Beer's law; chromatic adaptation; color vision; concentration; cones; curve shape; high luminance; metameric matches; pigment; photopigment; vision
- A complete quantitative analysis is presented of changes in the shape of the spectral absorptance curve of any Beer's-law pigment solution (or other Bouguer's-Iaw material) as concentration of the pigment, or thickness of the solution layer, is...
- Journal of Research of NIST and Predecessor Publications
- Variation in results of sieving with standard cement sieves.
- Journal of Research of NIST and Predecessor Publications
- Variation in distortion with magnification
- Journal of Research of NIST and Predecessor Publications
- Variation in direction of propagation of long electromagnetic waves
- Journal of Research of NIST and Predecessor Publications
- Variances of plane parameters fitted to range data
- LADAR; nonlinear least squares; variances of fitted parameters
- Formulas for variances of plane parameters fitted with Nonlinear Least Squares to point clouds acquired by 3D imaging systems (e.g., LADAR) are derived. Two different error objective functions used in minimization are discussed: the orthogonal and...
- Journal of Research of NIST and Predecessor Publications
- Variances of Cylinder Parameters Fitted to Range Data
- Nonlinear Least Square fitting; 3D imaging systems; cylinder fitting; orthogonal error function; directional error function
- Industrial pipelines are frequently scanned with 3D imaging systems (e.g., LADAR) and cylinders are fitted to the collected data. Then, the fitted as-built model is compared with the as-designed model. Meaningful comparison between the two models...
- Journal of Research of NIST and Predecessor Publications
- Variances in theMeasurement of Ceramic Powder Properties
- ceramic powder; characterization; composition; density; particle size; round robin; specific surface area; variances
- Variances in the measurement of properties used to characterize ceramic powders are discussed in the context of the International Energy Agency's study, Annex II, Subtask 2, which includes chemical and physical measurements for five powders: two...
- Journal of Research of NIST and Predecessor Publications
- Variance of measuring instruments and its relation to accuracy and sensitivity
- Journal of Research of NIST and Predecessor Publications

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