Die Wavelet-Analyse als chemometrisches Werkzeug

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abb_verz.pdf21.07.1999 00:00:0041,3 KB
index.html12.04.2007 12:05:297,2 KB
inhalt.htm21.07.1999 00:00:0012,3 KB
lit_verz.pdf21.07.1999 00:00:00135,3 KB
tab_verz.pdf21.07.1999 00:00:0033,5 KB
w_anhng.pdf21.07.1999 00:00:00247 KB
w_index.pdf21.07.1999 00:00:0052,7 KB
w_inhalt.pdf21.07.1999 00:00:0056,7 KB
w_titel.pdf21.07.1999 00:00:0069,5 KB
wav_1.pdf21.07.1999 00:00:0049 KB
wav_2.pdf21.07.1999 00:00:001,16 MB
wav_3.pdf21.07.1999 00:00:003,49 MB
wav_4.pdf21.07.1999 00:00:0064,2 KB
In most cases chemometric methods (PCA, PCR, PLS) are used for data modelling when NIR-spectrometry is applied for analytical purposes. This work is about the application of the wavelet-transform as a tool in chemometrics for analysing NIR-spectra. Beside aspects of data pretreatment, like smoothing of NIR-spectra, and data compression the focus was set on NIR-analysis using wavelet-transformed NIR-spectra. A new method for building multivariate calibration models based on wavelet-coefficients selected by a genetic algorithm is introduced. In addition the results obtained by calibrating wavelet-coefficients using PCR and PLS are descriped. Furthermore the identification of post consumer plastic waste by wavelet-transformed NIR-spectra and an artificial neural network is demonstrated. Two new special types of wavelets which allow analysing finitely extended signals (like spectra) without introducing artifacts near the boundaries were applied
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Dokumententyp:
Wissenschaftliche Abschlussarbeiten » Dissertation
Fakultät / Institut:
Fakultät für Chemie
Dewey Dezimal-Klassifikation:
500 Naturwissenschaften und Mathematik » 540 Chemie
Stichwörter:
wavelet-Transform, NIR-spectrometry, wavelets, articicial neurol network, genetic algorithm, chemometrics, multivariate calibration
Beitragende:
Prof. Dr. Molt, Karl [Betreuer(in), Doktorvater]
Prof. Dr. Golloch, Alfred [Gutachter(in), Rezensent(in)]
Sprache:
Deutsch
Kollektion / Status:
Dissertationen / Dokument veröffentlicht
Datum der Promotion:
21.07.1999
Dokument erstellt am:
21.07.1999
Dateien geändert am:
12.04.2007
Medientyp:
Text