Results 221 to 230 of about 120,037 (261)
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Automatic identification of spectral lines
2023Tesis (Master of Science in Engineering)--Pontificia Universidad Católica de Chile, 2016 ; La astronomía enfrenta nuevos desafíos en cuanto a cómo analizar big data, y por lo tanto, como buscar o predecir eventos/patrones de interés. Nuevas observaciones en regiones de longitudes de onda previamente inexploradas están disponibles gracias a instrumentos
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Journal of Applied Physics, 2022
The process of associating spectral peaks in emission radiation data with particular charge states of specific elements is a common task in the field of plasma diagnostics in both laboratory and astrophysical settings. Existing techniques for this purpose are often highly manual or can rely heavily on theoretical models and assumptions of plasma ...
M. Tobin, M. Nations
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The process of associating spectral peaks in emission radiation data with particular charge states of specific elements is a common task in the field of plasma diagnostics in both laboratory and astrophysical settings. Existing techniques for this purpose are often highly manual or can rely heavily on theoretical models and assumptions of plasma ...
M. Tobin, M. Nations
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Spectral Line Identification and Modelling (SLIM) in the MAdrid Data CUBe Analysis (MADCUBA) package
Astronomy and Astrophysics, 2019Sérgio Martin Ruiz +2 more
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Identification of spectral lines of elements using artificial neural networks
Microchemical Journal, 2009Artificial neural networks (ANNs) are relatively new computational tools that have found extensive utilization in solving many complex real-world problems. This paper describes how an ANN can be used to identify the spectral lines of elements. The spectral lines of Cadmium (Cd), Calcium (Ca), Iron (Fe), Lithium (Li), Mercury (Hg), Potassium (K) and ...
M. Saritha, V.P.N. Nampoori
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Spectral line identification of Comet Halley in March–April 1986
Chinese Astronomy and Astrophysics, 1990Abstract In March–April 1986 when Comet Halley was between 1 and 1.5 AU fron the Sun, we used the 1-metre telescope of Yunnan Observatory and obtained 7 long-slit spectra at a dispersion of 165 A/mm and with a resolution better than 7 A. The results of line identification on 6 of the plates between 3000–5100 A are given here.
Wu Guang-jie +3 more
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Spectral Line Identification Studies of Some Stars with Helium Anomalies
Canadian Journal of Physics, 1975Spectral line identification studies have been carried out at 12 Å/mm for four peculiar helium stars in the Orion Belt Region and two standard stars. HD 36 526, HD 37 140, HD 37 321, and HD 37 479 (σ Orionis E) are compared with the sharp lined MK standards, ν Ononis (B3 V) and γ Lyrae (B9 III).
Bruce Campbell, R. F. Garrison
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Improving identification of weak spectral lines in the presence of a strong continuum
Astrophysics and Space Science, 2016Observing faint spectral signals from light sources in the presence of an overwhelming background is a common goal in many aspects of physics and astronomy. By using an optimized selected part of a Fourier interferogram, we demonstrate that observability of such faint signals can be much improved.
Eyal Schwartz +2 more
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Journal of Neuro-Oncology, 2001
To elucidate the reasons why mRNA expression of the LGI1 candidate tumor-suppressor gene was severely reduced in the glioma-derived cell line H4, as demonstrated in a previous study, we performed a cytogenetic analysis of this cell line using conventional methods and fluorescence in situ hybridization (FISH) techniques [spectral karyotyping (SKY ...
D, Krex +5 more
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To elucidate the reasons why mRNA expression of the LGI1 candidate tumor-suppressor gene was severely reduced in the glioma-derived cell line H4, as demonstrated in a previous study, we performed a cytogenetic analysis of this cell line using conventional methods and fluorescence in situ hybridization (FISH) techniques [spectral karyotyping (SKY ...
D, Krex +5 more
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A multiple choice greedy algorithm for resolution improvement of spectral lines identification
2012 10th International Symposium on Electronics and Telecommunications, 2012The paper analyses the possibility to improve the resolution of spectral lines identification based on zero-padding Discrete Fourier Transform (DFT), by using a sparse vector estimation technique. A variant of the Orthogonal Matching Pursuit (OMP) algorithm called ‘Multiple Choice OMP (MCOMP)’ is proposed. This algorithm considers the difficulty arisen
Anisia Florescu, Silviu Ciochina
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