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

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 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

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.

Nonparametric Unidimensional Unfolding for Multicategory Data

1992 ◽  
Vol 4 ◽  
pp. 41-74 ◽  
Author(s):  
Wijbrandt H. van Schuur
Keyword(s):  
Republican Party ◽  
Rating Data ◽  
Presidential Candidates ◽  
Unfolding Model ◽  
Scaling Model ◽  
Dichotomous Data ◽  
Party Activists ◽  
Preference Ratings

This article describes a nonparametric unidimensional unfolding model for dichotomous data (van Schuur 1984) and shows how it can be extended to multicategory data such as Likert-type rating data. This extension is analogous to Molenaar's (1982) application of Mokken's (1970) nonparametric unidimensional cumulative scaling model. The model is illustrated with an analysis of five-point preference ratings given in 1980 to five political presidential candidates by Democratic and Republican party activists in Missouri.

Precision of novel radiological methods in relation to resurfacing humeral head implants: assessment by radiostereometric analysis, DXA, and geometrical analysis

2012 ◽  
Vol 132 (11) ◽  
pp. 1521-1530 ◽  
Author(s):  
Maiken Stilling ◽  
Inger Mechlenburg ◽  
Anders Amstrup ◽  
Kjeld Soballe ◽  
Thomas Klebe
Keyword(s):  
Humeral Head ◽  
Radiostereometric Analysis ◽  
Geometrical Analysis ◽  
Radiological Methods

Direct laser writing and geometrical analysis of scaffolds with designed pore architecture for three-dimensional cell culturing

2012 ◽  
Vol 22 (11) ◽  
pp. 115016 ◽  
Author(s):  
Elli Käpylä ◽  
Dogu Baran Aydogan ◽  
Sanni Virjula ◽  
Sari Vanhatupa ◽  
Susanna Miettinen ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Direct Laser Writing ◽  
Geometrical Analysis ◽  
Laser Writing ◽  
Cell Culturing ◽  
Pore Architecture ◽  
Direct Laser ◽  
Dimensional Cell
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