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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Nonstationary feature extraction techniques for automatic classification of impact acoustic signals

Bekiroglu, Yasemi January 2008 (has links)
Condition monitoring of wooden railway sleepers applications are generallycarried out by visual inspection and if necessary some impact acoustic examination iscarried out intuitively by skilled personnel. In this work, a pattern recognition solutionhas been proposed to automate the process for the achievement of robust results. Thestudy presents a comparison of several pattern recognition techniques together withvarious nonstationary feature extraction techniques for classification of impactacoustic emissions. Pattern classifiers such as multilayer perceptron, learning cectorquantization and gaussian mixture models, are combined with nonstationary featureextraction techniques such as Short Time Fourier Transform, Continuous WaveletTransform, Discrete Wavelet Transform and Wigner-Ville Distribution. Due to thepresence of several different feature extraction and classification technqies, datafusion has been investigated. Data fusion in the current case has mainly beeninvestigated on two levels, feature level and classifier level respectively. Fusion at thefeature level demonstrated best results with an overall accuracy of 82% whencompared to the human operator.
2

Das Bagdad-bahn-problem 1890-1903 ...

Sitki, Bekir, January 1935 (has links)
Inaug.-diss.--Freiburg i. Pr. / Lebenslauf. "Literaturverzeichnis": p. 4-8.
3

The diplomatic history of the Bagdad railroad ...

Wolf, John B. January 1900 (has links)
Thesis (Ph. D.)--University of Minnesota, 1933. / Vita. Published also as University of Missouri studies, vol. XI, no. 2. eContent provider-neutral record in process. Description based on print version record. "A selected bibliography": p. 103-107.
4

The English negotiations in the Bagdad Railroad, 1912-1914 /

Martin, Margaret L. January 1939 (has links)
Thesis (M.A.)--Ohio State University, 1939. / Includes bibliographical references (leaf 91). Available online via OhioLINK's ETD Center.
5

Das Bagdad-bahn-problem 1890-1903 ...

Sitki, Bekir, January 1935 (has links)
Inaug.-diss.--Freiburg i. Pr. / Lebenslauf. "Literaturverzeichnis": p. 4-8.
6

Die wirtschaftliche bedeutung der Bagdadbahn ...

Müller, Edgar, January 1919 (has links)
Inaug.-diss.--Zürich. / Curriculum vitae. "Verzeichnis der benützten literatur": p. [120]-122.
7

The British attitude toward the Bagdad Railway 1902-1910 /

Davies, Robert O. January 1937 (has links)
Thesis (M.A.)--Ohio State University, 1937. / Includes bibliographical references (leaves [79]-81). Available online via OhioLINK's ETD Center.
8

A promotional strategy for the MTR /

Suen, Fun-sing, Winston. January 1985 (has links)
Thesis (M.B.A.)--University of Hong Kong, 1985.
9

Optimal Operation of the Swedish Railway Electrical system : An Application of Optimal power Flow

Olofsson, Magnus January 1996 (has links)
<p>QC 20160524</p>
10

A promotional strategy for the MTR

孫奮生, Suen, Fun-sing, Winston. January 1985 (has links)
published_or_final_version / Business Administration / Master / Master of Business Administration

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