scholarly journals Optimizing fabrication of electrodeposited 3D surface features

1998 ◽  
Author(s):  
C., LLNL Steffani
Keyword(s):  
Surface Features ◽  
3D Surface

Fabrication of Line & Space Structure and Wiring on 3D Surface Features with Imprinting Process

2018 ◽  
Vol 88 (1) ◽  
pp. 157-160
Author(s):  
Shogo Ota ◽  
Takashi Kurose ◽  
Hiroshi Ito
Keyword(s):  
Space Structure ◽  
Surface Features ◽  
3D Surface ◽  
Line Space

scholarly journals Automatic Segmentation of Pulmonary Fissures in Computed Tomography Images Using 3D Surface Features

2013 ◽  
Vol 27 (1) ◽  
pp. 58-67 ◽  
Author(s):  
Mali Yu ◽  
Hong Liu ◽  
Jianping Gong ◽  
Renchao Jin ◽  
Ping Han ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Automatic Segmentation ◽  
Surface Features ◽  
Computed Tomography Images ◽  
3D Surface

scholarly journals Quantified ensemble 3D surface features modeled as a window on centric diatom valve morphogenesis

2018 ◽  
Author(s):  
Janice L. Pappas
Keyword(s):  
Morphological Changes ◽  
Morphological Characters ◽  
Surface Generation ◽  
Centric Diatom ◽  
Surface Features ◽  
3D Surface ◽  
Algorithmic Techniques ◽  
Face Structure ◽  
Valve Formation ◽  
Diatom Valve

AbstractMorphological surface features are a record of genetic and developmental processes as well as environmental influences. The 3D geometric “terrain” of the surface consists of slopes via tangents, peaks and valleys via normals, smoothness of the transition between peaks and valleys, and point connections as flatness or curvature among all features. Such geometric quantities can be used to indicate morphological changes in valve formation over time. Quantified 3D surface features as geometric pattern ensembles may be representative of structural snapshots of the morphogenetic process.For diatoms, valve formation and pattern morphogenesis has been modeled using Turing-like and other algorithmic techniques to mimic the way in which diatoms exhibit the highly diverse patterns on their valve surfaces. How the created surface features are related to one another is not necessarily determined via such methods. With the diatom valve face structure of layered areolae, cribra, and other morphological characters, valve formation exhibits different combined geometries unfolding as 3D structural ensembles in particular spatial arrangements. Quantifying ensemble 3D surface geometries is attainable via models devised using parametric 3D equations and extracting surface features via partial derivatives for slopes, peaks and valleys, smoothness, and flatness as feature connectedness. Differences in ensemble 3D surface features may be used to assess structural differences among selected diatom genera as indicators of different valve formation sequences in surface generation and morphogenesis.

The Geosciences Applied to Lunar Exploration

1962 ◽  
Vol 14 ◽  
pp. 169-257 ◽  
Author(s):  
J. Green
Keyword(s):  
Lunar Surface ◽  
Probable Mechanism ◽  
Point Of View ◽  
Lunar Exploration ◽  
Geological Model ◽  
Apply Geophysics ◽  
Surface Features ◽  
The Impact

The term geo-sciences has been used here to include the disciplines geology, geophysics and geochemistry. However, in order to apply geophysics and geochemistry effectively one must begin with a geological model. Therefore, the science of geology should be used as the basis for lunar exploration. From an astronomical point of view, a lunar terrain heavily impacted with meteors appears the more reasonable; although from a geological standpoint, volcanism seems the more probable mechanism. A surface liberally marked with volcanic features has been advocated by such geologists as Bülow, Dana, Suess, von Wolff, Shaler, Spurr, and Kuno. In this paper, both the impact and volcanic hypotheses are considered in the application of the geo-sciences to manned lunar exploration. However, more emphasis is placed on the volcanic, or more correctly the defluidization, hypothesis to account for lunar surface features.

The Roles of Beacons and Surface Features on the Use of Local and Global Geometric Cues for Reorientation

2012 ◽  
Author(s):  
Kent D. Bodily ◽  
Zachary A. Kilday ◽  
Caroline K. Eastman ◽  
Katherine A. Gaskin ◽  
April Graves ◽  
...  
Keyword(s):  
Surface Features ◽  
Geometric Cues
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