منابع مشابه
Displacement Map Using Spectral Operators
Displacement map is a modeling technique that creates shape by mapping the height field of the complicated shape feature on the surface of the target shape, which is preferable in describing sophisticated feature details. This paper investigates the techniques for fast creation of the displacement map based on the rich research achievements of shape analysis and digital signal processing. The p...
متن کاملThe spectral minimum for random displacement models
Consider a one-dimensional Schrr odinger operator with potential V given as follows: Fix a single site potential f which is supported in an interval of length less than 1. Construct V by placing a translate of f into each unit interval n; n + 1] for integer n, where otherwise the positions of each translate are arbitrary. Which connguration of single sites minimizes the spectral minimum of the ...
متن کاملQUADRATIC STARK CONSTANTS OF NEUTRAL COPPER SPECTRAL LINES IN THE COULOMB APPROXIMATION
Quadratic Stark constants of neutral copper spectral lines for all s,p, and d levels are calculated using the Coulomb approximation. These results are compared with existing data and, generally, good agreement is observed
متن کاملAnalyzing Spectral Lines of Nearby Extreme Galaxies
Chemical Abundances and Electron densities were calculated for two galaxies IC 1809 and UGC 02172 categorized as extreme star-forming systems from high H-alpha equivalent of -82 and -125, respectively. Line ratios [NII] λ6583/[OII] λ3727 were used to determine the metallicity for IC 1809 yielding a measurement of Z = 1.3 ± 0.1υ , where ionization did not display a significant effect. However, f...
متن کاملSelective excitation of homogeneous spectral lines.
It is possible, by selective excitation of homogeneously broadened lines, to produce response signals, which are orders of magnitude narrower than the original lines. The new type of echo, which allows detecting such signals, and the formalism, useful for understanding the phenomenon, as well as the experimental examples from NMR spectroscopy are presented. Long-lived partial NMR echo in solids...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1920
ISSN: 0028-0836,1476-4687
DOI: 10.1038/104565f0