A geometrical analysis of the unfolding model: General solutions

Psychometrika ◽  
1973 ◽  
Vol 38 (3) ◽  
pp. 305-336 ◽  
Author(s):  
John Davidson
Keyword(s):  
Geometrical Analysis ◽  
General Solutions ◽  
Unfolding Model

A geometrical analysis of the unfolding model: Nondegenerate solutions

Psychometrika ◽  
1972 ◽  
Vol 37 (2) ◽  
pp. 193-216 ◽  
Author(s):  
J. A. Davidson
Keyword(s):  
Geometrical Analysis ◽  
Unfolding Model

General solutions to nurses' travel in linear and circular nursing units

1974 ◽  
Author(s):  
Stanley Lippert
Keyword(s):  
General Solutions

A geometrical analysis of limit layers and interfaces of lattices

1992 ◽  
Vol 2 (6) ◽  
pp. 871-886 ◽  
Author(s):  
Michel Duneau
Keyword(s):  
Geometrical Analysis

GEOMETRICAL ANALYSIS OF FIELD - ION IMAGES

1986 ◽  
Vol 47 (C2) ◽  
pp. C2-437-C2-442 ◽  
Author(s):  
M. N. CHANDRASEKHARAIAH
Keyword(s):  
Geometrical Analysis

GENERAL SOLUTIONS OF CONVECTIVE FLOWS OF MHD CASSON FLUID WITH SLIP AND RADIATIVE HEAT TRANSFER AT THE BOUNDARY

2017 ◽  
Vol 9 (1) ◽  
pp. 1-11 ◽  
Author(s):  
M.A. Imran ◽  
Nehad Ali Shah ◽  
K. Rafique ◽  
Ayesha Sohail ◽  
Sana Ejaz
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Casson Fluid ◽  
General Solutions ◽  
Convective Flows

3-D geometrical analysis tool for meteoroids/debris impact risk assessment

1991 ◽  
Author(s):  
J. BORDE ◽  
G. DROLSHAGEN
Keyword(s):  
Risk Assessment ◽  
Analysis Tool ◽  
Geometrical Analysis ◽  
Impact Risk ◽  
Debris Impact

scholarly journals Interpreting Locked Photographic Data: The Case of Apollo 17 Photo GPN-2000-00113

Designs ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 8
Author(s):  
Pyrrhon Amathes ◽  
Paul Christodoulides
Keyword(s):  
Experimental Data ◽  
Computer Simulations ◽  
The Moon ◽  
Geometrical Analysis ◽  
Apparent Position ◽  
Apollo Program ◽  
The Earth ◽  
Novel Approach ◽  
The World ◽  
The Moment

Photography can be used for pleasure and art but can also be used in many disciplines of science, because it captures the details of the moment and can serve as a proving tool due to the information it preserves. During the period of the Apollo program (1969 to 1972), the National Aeronautics and Space Administration (NASA) successfully landed humans on the Moon and showed hundreds of photos to the world presenting the travel and landings. This paper uses computer simulations and geometry to examine the authenticity of one such photo, namely Apollo 17 photo GPN-2000-00113. In addition, a novel approach is employed by creating an experimental scene to illustrate details and provide measurements. The crucial factors on which the geometrical analysis relies are locked in the photograph and are: (a) the apparent position of the Earth relative to the illustrated flag and (b) the point to which the shadow of the astronaut taking the photo reaches, in relation to the flagpole. The analysis and experimental data show geometrical and time mismatches, proving that the photo is a composite.

scholarly journals Some general solutions for linear Bragg–Hawthorne equation

2021 ◽  
Vol 33 (7) ◽  
pp. 077113
Author(s):  
Ting Yi
Keyword(s):  
General Solutions

Cylindrically Anisotropic Tubes Containing a Line Dislocation

2006 ◽  
Author(s):  
Chung-Hao Wang
Keyword(s):  
State Space ◽  
Dislocation Line ◽  
Longitudinal Axis ◽  
The State ◽  
Fourier Series Expansion ◽  
General Solutions ◽  
Mixed Dislocation ◽  
Line Dislocation ◽  
Space Formulation ◽  
Cylindrically Anisotropic

An analytical solution of the problem of a cylindrically anisotropic tube which contains a line dislocation is presented in this study. The state space formulation in conjunction with the eigenstrain theory is proved to be a feasible and systematic methodology to analyze a tube with the existence of dislocations. The state space formulation which expediently groups the displacements and the cylindrical surface traction can construct a governing differential matrix equation. By using Fourier series expansion and the well developed theory of matrix algebra, the asymmetrical solutions are not only explicit but also compact in form. The dislocation considered in this study is a kind of mixed dislocation which is the combination of edge dislocations and a screw dislocation and the dislocation line is parallel to the longitudinal axis of the tube. The degeneracy of the eigen relation and the technique to determine the inverse of a singular matrix are thoroughly discussed, so that the general solutions can be applied to the case of isotropic tubes, which is one of the novel features of this research. The results of isotropic problems, which are belong to the general solutions, are compared with the well-established expressions in the literature. The satisfied correspondences of these comparisons indicate the validness of this study. A cylindrically orthotropic tube is also investigated as an example and the numerical results for the displacements and tangential stress on the outer surface are displayed. The effects on surface stresses due to the existence of a dislocation appear to have a characteristic of localized phenomenon.

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