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- A Framework for Reproducible Latent Fingerprint Enhancements
- dodge and burn; fractional diffusion equation; latent fingerprints; progressive Lévy stable smoothing; reproducible image enhancement.
- Photoshop processing of latent fingerprints is the preferred methodology among law enforcement forensic experts, but that appproach is not fully reproducible and may lead to questionable enhancements. Alternative, independent, fully reproducible...
- Journal of Research of NIST and Predecessor Publications
- A friction meter for determining the coefficient of kinetic friction of fabrics
- Journal of Research of NIST and Predecessor Publications
- A fundamental basis for measurements of length
- Journal of Research of NIST and Predecessor Publications
- A galvanic cell with a low emf-temperature coefficient
- Double salt; cell with low temperature coefficient; galvanic cells; standard cells
- This paper presents data on a modified cadmium sulfate saturated standard cell of the Vosburgh type in which a tertiary amalgam containing 11.2 percent bismuth and 8.4 percent cadmium is used as anode and the double salt, CdSO4 Na2SO4 2H2O is...
- Journal of Research of NIST and Predecessor Publications
- A Game-Theoretic Model of Inspection-Resource Allocation
- inspection; mathematical model; regulation; theory of games.
- This paper presents a generalization of a game-theoretic model, first described in an earlier paper, of the relationship between an inspectee who may decide to "cheat" or not, and an inspector whose task it is to minimize the expected gain that the...
- Journal of Research of NIST and Predecessor Publications
- A gamma polarimeter for neutron polarization measurement in a liquid deuterium target for parity violation in polarized neutron capture on deuterium
- deuterium; gamma polarimeter; neutron polarization; weak meson coupling constants
- A measurement of the parity-violating gamma asymmetry in n-D capture would yield information on N-N parity violation independent of the n-p system. Since cold neutrons will depolarize in a liquid deuterium target in which the scattering cross...
- Journal of Research of NIST and Predecessor Publications
- A gamma-ray ionization chamber for use with a direct current amplifier
- Journal of Research of NIST and Predecessor Publications
- A gas analysis pipette for difficult absorptions
- Journal of Research of NIST and Predecessor Publications
- A gas pressure scale based on primary standard piston gauges
- gas pressure scale; piston gauge; primary standard piston gauge; pressure measurement; secondary standard piston gauge
- Technology (NIST) has redefined its gas pressure scale, up to 17 MPa, based on two primary standard piston gauges. The primary standard piston gauges are 35.8 mm in diameter and operate from 20 kPa to 1 MPa. Ten secondary standard piston gauges,...
- Journal of Research of NIST and Predecessor Publications
- A general formula for the computation of colorimetric purity
- Journal of Research of NIST and Predecessor Publications
- A general waveguide circuit theory
- characteristic impedance; circuit theory; microwave measurement; network analyzer; pseudowaves; reciprocity; reference impedance; transmission line; traveling waves; wave-guide
- This work generalizes and extends the classical circuit theory of electromagnetic waveguides. Unlike the conventional theory, the present formulation applies to all waveguides composed of linear, isotropic material, even those involving lossy...
- Journal of Research of NIST and Predecessor Publications
- A generalization of a result of Newman on multipliers of difference sets
- Abelian; multipliers; block designs; difference sets
- A theorem of M. Newman states that if v, k, λ, are the parameters for a difference set D, and k-λ=P or 2p (p a prime) then p is a multiplier of D. This theorem is generalized to the case of an abelian difference set and several consequences are...
- Journal of Research of NIST and Predecessor Publications
- A generalized matrix version of Rennie's inequality
- Generalized inverse; inequality; matrix
- The matrix version of Rennie's inequality and the finite-dimensional version of Kantorovich's inequality are obtained by considering a positive definite matrix and its inverse. Generalizations of these inequalities are obtained in which the inverse...
- Journal of Research of NIST and Predecessor Publications
- A glass electrode potentiometer system for the determination of the pH values of weakly buffered solutions such as natural and treated waters
- Journal of Research of NIST and Predecessor Publications
- A glossmeter for smoothness comparisons of machine-finished surfaces
- Journal of Research of NIST and Predecessor Publications
- A graph coloring algorithm for large scheduling problems
- Algorithm; chromatic number; color function; graph; graph coloring; heuristic; interchange; random test graphs; scheduling; time complexity.
- A new graph coloring algorithm is presented and compared to a wide variety of known algorithms. The algorithm is shown to exhibit O(n2) time behavior for most sparse graphs and thus is found to be particularly well suited for use with large-scale...
- Journal of Research of NIST and Predecessor Publications
- A gravimetric method for the determination of ruthenium
- Journal of Research of NIST and Predecessor Publications
- A group of attendees observing a computer demonstration
- Photographs; History; Metrology; Computer security
- A group of attendees observing a computer demonstration. The man in a suit who is seated man holds a publication. A direct response to the Computer Security Act of 1987 could be seen in a joint NIST-National Security Agency project report...
- Historic Images
- A guide to the use of the modified reflectometer technique of VSWR measurement
- modified reflectometer technique, adjustment, VSWR measurement
- The theory of the modified reflectometer technique of measuring VSWR at microwave frequencies is discussed briefly, the operational procedure is outlined, and selected results are given of an unpublished error analysis. Much of the theory and...
- Journal of Research of NIST and Predecessor Publications
- A Head-Space Method for Measuring Activity Coefficients, Partition Coefficients, and Solubilities of Hydrocarbons in Saline Solutions
- activity coefficient; aqueous solubility; head-space; partition coefficient.
- An apparatus is described which measures the equilibrium distribution of a hydrocarbon between a gas and aqueous phase. Soluble hydrocarbons are extracted from an aqueous salt solution by very small bubbles of hydrogen generated electrolytically...
- Journal of Research of NIST and Predecessor Publications

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