✦ LIBER ✦

AXIS: Automated XRF Interpretation of Spectra

✍ Scribed by P. H. Abbott; M. J. Adams

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 544 KB
Volume: 26
Category: Article
ISSN: 0049-8246
DOI: 10.1002/(sici)1097-4539(199705)26:3<125::aid-xrs222>3.0.co;2-g

No coin nor oath required. For personal study only.

✦ Synopsis

Modern x-ray Ñuorescence instruments are highly sophisticated analytical tools. However, the interpretation software available with such instruments generally provides for little more than a computerized look-up table with reliance on operator experience to provide plausible identiÐcation of spectral features. The system described (AXIS) overcomes some frequently encountered problems by appropriate application of heuristic interpretation (expert system), fuzzy logic and pattern recognition. Spectral noise and instrumental inaccuracies are handled by generation and propagation of uncertainty using fuzzy logic algorithms, and fuzzy c-means pattern recognition furnishes the system with the ability to develop background knowledge from previously recorded similar spectra. The analytical results are presented graphically in the form of a hierarchical data tree, and the software can form the basis of a fully automated XRF interpretation system.

📜 SIMILAR VOLUMES

Automated analysis of stellar spectra

✍ C. Allende Prieto 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 500 KB

Scoring accuracy of four automated MMPI

Scoring accuracy of four automated MMPI interpretation report agencies

✍ Harry M. Grayson; Thomas E. Backer 📂 Article 📅 1972 🏛 John Wiley and Sons 🌐 English ⚖ 460 KB 👁 2 views

Automated Processing of Two-Dimensional

Automated Processing of Two-Dimensional Correlation Spectra

✍ Helmut Sengstschmid; Heinz Sterk; Ray Freeman 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 274 KB

An automated scheme is described which locates the centers of cross peaks in two-dimensional correlation spectra, even under conditions of severe overlap. Double-quantum-filtered correlation (DQ-COSY) spectra have been investigated, but the method is also applicable to TOCSY and NOESY spectra. The s

X-ray spectra of XMM-Newton AXIS serendi

X-ray spectra of XMM-Newton AXIS serendipitous sources

✍ S. Mateos; X. Barcons; F.J. Carrera; M.T. Ceballos; the XMM-Newton Survey Scienc 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 324 KB 👁 2 views

## Abstract We have carried out a broad‐band spectral analysis of X‐ray sources detected serendipitously with the EPIC‐pn instrument onboard XMM‐Newton in AXIS fields. Our total catalogue contains 1837 X‐ray sources detected in the energy band 0.5‐4.5 keV down to a flux of ∼ 3 × 10^–15^erg cm^–2^s^

Differential fragmentation patterns of p

Differential fragmentation patterns of pectin oligogalacturonides observed by nanoelectrospray quadrupole ion-trap mass spectrometry using automated spectra interpretation

✍ Kudzai E. Mutenda; Rune Matthiesen; Peter Roepstorff 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 211 KB

## Abstract Oligogalacturonides of different degrees of polymerization (DP) and methyl esterification (DE) were structurally analyzed by nanoESI quadrupole ion‐trap mass spectrometry. The fragmentation patterns of the oligogalacturonides were compared using the program ‘Virtual Expert Mass Spectrom

Interpretation of infrared spectra by ar

Interpretation of infrared spectra by artificial neural networks

✍ M. Meyer; T. Weigelt 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 499 KB

A Pascal program for the sunulatlon of artlficlal neural networks, was mplemented on a PC For mterpretatlon of Infrared (IR) spectra by means of a neural network, a back propagation model with one hidden layer and a s-id transfer fun&on has been proved to be the best of several network types The ful