Development of a two-dimensional parametric model of radar scattering

2002 ◽  
Author(s):  
A. van der Merwe ◽  
M.J. Gerry ◽  
L.C. Potter ◽  
I.J. Gupta
Keyword(s):  
Parametric Model ◽  
Two Dimensional ◽  
Radar Scattering

A GTD-based parametric model for radar scattering

1995 ◽  
Vol 43 (10) ◽  
pp. 1058-1067 ◽  
Author(s):  
L.C. Potter ◽  
Da-Ming Chiang ◽  
R. Carriere ◽  
M.J. Gerry
Keyword(s):  
Parametric Model ◽  
Radar Scattering

scholarly journals A parametric model for barred equilibrium beach profiles: Two-dimensional implementation

2016 ◽  
Vol 117 ◽  
pp. 166-175 ◽  
Author(s):  
Robert A. Holman ◽  
David M. Lalejini ◽  
Todd Holland
Keyword(s):  
Parametric Model ◽  
Two Dimensional

scholarly journals Automatic Clustering of Flow Cytometry Data with Density-Based Merging

2009 ◽  
Vol 2009 ◽  
pp. 1-7 ◽  
Author(s):  
Guenther Walther ◽  
Noah Zimmerman ◽  
Wayne Moore ◽  
David Parks ◽  
Stephen Meehan ◽  
...  
Keyword(s):  
Flow Cytometry ◽  
Parametric Model ◽  
Two Dimensional ◽  
Laboratory Setting ◽  
Flow Cytometry Data ◽  
Current Limit ◽  
Automatic Clustering ◽  
Automated Tools ◽  
A Current ◽  
Number Of Cells

The ability of flow cytometry to allow fast single cell interrogation of a large number of cells has made this technology ubiquitous and indispensable in the clinical and laboratory setting. A current limit to the potential of this technology is the lack of automated tools for analyzing the resulting data. We describe methodology and software to automatically identify cell populations in flow cytometry data. Our approach advances the paradigm of manually gating sequential two-dimensional projections of the data to a procedure that automatically produces gates based on statistical theory. Our approach is nonparametric and can reproduce nonconvex subpopulations that are known to occur in flow cytometry samples, but which cannot be produced with current parametric model-based approaches. We illustrate the methodology with a sample of mouse spleen and peritoneal cavity cells.

Designing a new three-dimensional periodic cellular auxetic material

2017 ◽  
Vol 31 (16-19) ◽  
pp. 1744088
Author(s):  
Yiyi Zhou ◽  
Lianmen Chen
Keyword(s):  
Poisson’S Ratio ◽  
Three Dimensional ◽  
Parametric Model ◽  
Early Research ◽  
Poisson's Ratio ◽  
Negative Poisson’S Ratio ◽  
Two Dimensional ◽  
Auxetic Materials ◽  
Negative Poisson's Ratio ◽  
Fundamental Mechanism

Auxetics are materials showing a negative Poisson’s ratio. Early research found several categories of auxetic materials in the chemical field. Later research identified the fundamental mechanism generating this behavior is rotation; a variety of two-dimensional auxetic material have been generated accordingly. Nevertheless, the successful example of three-dimensional auxetic material is still rare. This paper introduces a new design of three-dimensional periodic cellular auxetic material based on geometrical and mechanical methodology. The projections of the optimized periodic modules in two horizontal directions are geometrically same with auxetic hexahedral poem, so that the optimized periodic material can perform auxetic in both two horizontal directions under vertical compression. Parametric model is simulated to prove the design.

Spectrophotometric measurements of objective-prism spectra

1966 ◽  
Vol 24 ◽  
pp. 118-119
Author(s):  
Th. Schmidt-Kaler
Keyword(s):  
Progress Report ◽  
Two Dimensional ◽  
Objective Prism ◽  
Made In

I should like to give you a very condensed progress report on some spectrophotometric measurements of objective-prism spectra made in collaboration with H. Leicher at Bonn. The procedure used is almost completely automatic. The measurements are made with the help of a semi-automatic fully digitized registering microphotometer constructed by Hög-Hamburg. The reductions are carried out with the aid of a number of interconnected programmes written for the computer IBM 7090, beginning with the output of the photometer in the form of punched cards and ending with the printing-out of the final two-dimensional classifications.

Introductory paper

1966 ◽  
Vol 24 ◽  
pp. 3-5
Author(s):  
W. W. Morgan
Keyword(s):  
Line Intensity ◽  
Classification Scheme ◽  
Two Dimensional ◽  
Spectral Classification ◽  
Dimensional Array ◽  
Rr Lyrae ◽  
Metallic Line ◽  
Introductory Paper ◽  
Parameter Varying ◽  
Definition Of

1. The definition of “normal” stars in spectral classification changes with time; at the time of the publication of theYerkes Spectral Atlasthe term “normal” was applied to stars whose spectra could be fitted smoothly into a two-dimensional array. Thus, at that time, weak-lined spectra (RR Lyrae and HD 140283) would have been considered peculiar. At the present time we would tend to classify such spectra as “normal”—in a more complicated classification scheme which would have a parameter varying with metallic-line intensity within a specific spectral subdivision.

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