Combining Shape Analyses by Intersecting Abstractions

2005 ◽  
pp. 33-48 ◽  
Author(s):  
Gilad Arnold ◽  
Roman Manevich ◽  
Mooly Sagiv ◽  
Ran Shaham
Keyword(s):  
Shape Analyses

scholarly journals Statistical shape analyses of patients with scaphocephaly after surgical remodeling

2019 ◽  
Author(s):  
Gokhan Ocakoglu ◽  
Mevlut Ozgur Taskapilioglu ◽  
Seckin Kaya ◽  
Zeynep Yazici
Keyword(s):  
Statistical Shape ◽  
Shape Analyses

AXES1.9: new tools for estimation of crystallite size and shape by Williamson–Hall analysis

1999 ◽  
Vol 32 (2) ◽  
pp. 345-350 ◽  
Author(s):  
Hugo Mändar ◽  
Jürgen Felsche ◽  
Valdek Mikli ◽  
Toivo Vajakas
Keyword(s):  
Crystallite Size ◽  
Lattice Strain ◽  
Linear Interpolation ◽  
Shape Functions ◽  
Diffraction Vector ◽  
X Ray ◽  
Peak Fitting ◽  
Hall Plot ◽  
The World ◽  
Shape Analyses

Dialogues for the estimation of crystallite size, shape and lattice strain are designed and included in an X-ray powder diffraction (XRPD) program, namedAXES. They implement peak fitting and Voigt analysis followed by a Williamson–Hall plot (WHP). Eight different peak-shape functions can be used for individual peak fitting. Volume-weighted crystallite size and effective lattice deformation are calculated from linear interpolation of the WHP. Actual dimensions (diameters of spheres, diameters and heights of cylinders) are calculated, assuming spherical or cylindrical shapes of the crystallites. Results of size–shape analyses can be visualized in the form of a WHP and as an arrow diagram (HPGL format), which shows distribution of observed apparent and true sizes of crystallites with a diffraction vector. The program has been written in Borland Pascal 7.0 for MS-DOS. The executable code is availableviathe World Wide Web.

scholarly journals Do island populations differ in size and shape compared to mainland counterparts?

2019 ◽  
Vol 101 (2) ◽  
pp. 373-385 ◽  
Author(s):  
Sergio Ticul Álvarez-Castañeda ◽  
Laura A Nájera-Cortazar
Keyword(s):  
Geometric Morphometric ◽  
Island Populations ◽  
Terrestrial Vertebrates ◽  
Skull Shape ◽  
Skull Size ◽  
Morphometric Analyses ◽  
Interpopulation Variation ◽  
Pocket Mouse ◽  
Shape Analyses ◽  
Insular Populations

Abstract Adaptation and evolution of terrestrial vertebrates inhabiting islands have been the topic of many studies, particularly those seeking to identify trends or patterns in body size in mammals, albeit not necessarily in shape, in relation to mainland populations. The spiny pocket mouse, Chaetodipus spinatus, is distributed in the Baja California peninsula and its surrounding islands. Insular populations became isolated ~12,000 due to changes in sea level; these populations’ matrilinear (mitochondrial) DNA shows minor interpopulation variation. We tested the hypothesis that adaptation and evolution in these island populations involve variation in both skull size and skull shape (using geometric morphometrics) relative to mainland populations, rather than only in size as previously assumed. A total of 363 specimens from 15 insular and peninsular populations were used in analysis of the skull length and geometric morphometric analyses. Our findings revealed significant differences related to skull size among population. The skull shape analyses showed two significantly different morphotypes: one for all island specimens and one for all mainland samples. Our analyses support the hypothesis that insular populations may not only vary in size relative to mainland populations, but may also show variations in shape, regardless of differing conditions across islands.

Statistical shape analyses of trigonocephaly patients

2019 ◽  
Vol 36 (2) ◽  
pp. 379-384
Author(s):  
M. Özgür Taşkapılıoğlu ◽  
Gökhan Ocakoğlu ◽  
Seçkin Kaya ◽  
Duygu Baykal ◽  
Zeynep Yazıcı
Keyword(s):  
Statistical Shape ◽  
Shape Analyses
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