MAGNETO‐TELLURIC SOUNDING THREE‐LAYER INTERPRETATION CURVES

Geophysics ◽  
1961 ◽  
Vol 26 (4) ◽  
pp. 465-473 ◽  
Author(s):  
S. H. Yungul
Keyword(s):  
Computer Program ◽  
Digital Computer ◽  
Apparent Resistivity ◽  
Infinite Medium ◽  
The Third ◽  
Total Range

To interpret the magneto‐telluric sounding data in terms of layering in the subsurface, one needs a catalog of “standard” curves. The purpose of this paper is to present such a catalog for the three‐layer cases. The calculations were done by incorporating the formulas given by Cagniard (1953) into a digital computer program. The catalog consists of 117 apparent‐resistivity‐vs‐period curves representing ten resistivity combinations. In each case the third, semi‐infinite medium represents the “basement” with infinite resistivity. In addition, a set of two‐layer curves for the total range of resistivity combinations is also given. The procedure in using the curves is briefly explained.

On the Burmester Points of a Plane

1961 ◽  
Vol 28 (1) ◽  
pp. 41-49 ◽  
Author(s):  
Ferdinand Freudenstein ◽  
George N. Sandor
Keyword(s):  
Computer Program ◽  
Digital Computer ◽  
Analytical Form ◽  
Parametric Form ◽  
Kinematic Synthesis ◽  
Geometric Properties ◽  
The Third ◽  
Special Cases ◽  
Uniform Manner

The paper is divided into three parts concerned with the Burmester points associated with five distinct positions of a plane. In the first part, “Theory,” an equation is derived for the location of the Burmester points; algebraic and geometric properties of these points are deduced and special cases considered. An automatic digital-computer program is described in the second part, “Computation,” using a parametric form of the equation for the Burmester points. In the third part, “Application,” the analytical form of Burmester theory is applied to the solution of a variety of problems in plane kinematic synthesis in one uniform manner.

Comparative assessment of informational content of the equations of F.P. Hadlock and the computer program of V.N. Demidov in determination of term of gestation and fetal weight in the III trimester of gestation

2017 ◽  
Author(s):  
E.A. Derkach , O.I. Guseva
Keyword(s):  
Computer Program ◽  
High Precision ◽  
Gestational Age ◽  
Computer Programs ◽  
Comparative Assessment ◽  
Fetal Weight ◽  
Informational Content ◽  
Third Trimester ◽  
The Third

Objectives: to compare the accuracy of equations F.P. Hadlock and computer programs by V.N. Demidov in determining gestational age and fetal weight in the third trimester of gestation. Materials: 328 patients in terms 36–42 weeks of gestation are examined. Ultrasonography was performed in 0–5 days prior to childbirth. Results: it is established that the average mistake in determination of term of pregnancy when using the equation of F.P. Hadlock made 12,5 days, the computer program of V.N. Demidov – 4,4 days (distinction 2,8 times). The mistake within 4 days, when using the equation of F.P. Hadlock has met on average in 23,1 % of observations, the computer program of V.N. Demidov — 65,9 % (difference in 2,9 times). The mistake more than 10 days, took place respectively in 51,7 and 8,2 % (distinction by 6,3 times). At a comparative assessment of size of a mistake in determination of fetal mass it is established that when using the equation of F.P. Hadlock it has averaged 281,0 g, at application of the computer program of V.N. Demidov — 182,5 g (distinction of 54 %). The small mistake in the mass of a fetus which isn't exceeding 200 g at application of the equation of F.P. Hadlock has met in 48,1 % of cases and the computer program of V.N. Demidov — 64,0 % (distinction of 33,1 %). The mistake exceeding 500 g has been stated in 18 % (F.P. Hadlock) and 4,3 % (V.N. Demidov) respectively (distinction 4,2 times). Conclusions: the computer program of V.N. Demidov has high precision in determination of term of a gestation and mass of a fetus in the III pregnancy.

A Digital Computer Program for Processing Turbine-Generator Acceptance Test Data

1962 ◽  
Vol 84 (3) ◽  
pp. 295-304 ◽  
Author(s):  
G. A. Maneatis ◽  
W. H. Barr
Keyword(s):  
Thermodynamic Properties ◽  
Computer Program ◽  
Steam Turbine ◽  
Test Data ◽  
Digital Computer ◽  
Heat Rate ◽  
Acceptance Test ◽  
Turbine Generator

This paper describes a digital computer program which processes rapidly all of the data taken during a steam turbine-generator acceptance test. Specifically, it determines all thermodynamic properties of steam and water, computes corrected test heat rate, and finally develops a contract heat rate for purposes of comparison with manufacturer’s guarantees. The application of this program on two 330-megawatt units is discussed. The thinking leading to certain key decisions involving the ultimate approach taken is presented for the benefit of those contemplating a similar effort.

scholarly journals THE COMPARISON OF TREE QUALITIES

1965 ◽  
Vol 41 (2) ◽  
pp. 215-221
Author(s):  
P. L. Northcott
Keyword(s):  
Computer Program ◽  
Linear Combination ◽  
Digital Computer ◽  
Weighted Average ◽  
Statistical Procedure ◽  
Weighted Sum ◽  
Average Quality ◽  
The Individual

The need to compare individuals is discussed briefly. It is suggested that the composite quality of an individual is best defined as the weighted sum of a number of measurable characteristics of the individual. A statistical procedure for comparison of weighted average quality is derived from application of the principle of the linear combination of variables. A digital computer program is available.

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