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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.
21

Investigation of an Alternative AC Magnetic Tracking System

Taylor, John January 2007 (has links)
A general overview of the hardware and software implementation requirements of an AC magnetic tracking system is presented. The overview includes an analysis of the Polhemus Fastrak, the development of mathematical models and algorithms used for magnetic tracking and the design of test jigs used to verify the results. An original non-iterative tracking algorithm that allows sensor position and orientation to be calculated in rotation matrix form is developed and verified. Future methods of calibration are proposed with results supporting the design methods. It is concluded that the algorithm presented is effective, but that further developments in hardware and software are needed in order for the system to attain the tracking resolution and accuracy specifications of other leading tracking systems.
22

Modelling the magnetic properties of natural and environmental materials

Lees, Joan Anne January 1994 (has links)
Magnetic properties have been used to characterize natural and environmental materials. An evaluation of magnetic properties, for the modelling of sources of materials and minerals, has been completed. A methodological framework has been developed for the application of magnetic techniques to studies involving the quantification of sources of materials and minerals in any environment. the framework includes the idntification of sources using magnetic reconnaissance and multi-variate statistical classification techniques. magnetic measurements used are susceptibility (both field and laboratory), remanence and magnetization measurements. the linear additivity of magnetic measurements, and classification and linear modelling techniques, ahve been tested using datea for artificial laboratory mixtures and hypothetical mixing experimentrs. The limitations of using magnetic properties with these statistical and mathematical techniques are defined. the famework allows for hte testing of suitabililty of manetic modelling techniques in any sourceing study.
23

Relations between length, elasticity, and magnetization of iron and nickel wires

Gallaudet, Edson Fessenden, January 1896 (has links)
Thesis (Ph. D.)--Johns Hopkins University. / Biographical sketch. Bibliography: p. 29.
24

The effect of pressure upon magnetic permeability ...

Frisbie, Fannie Cornelia. January 1904 (has links)
Thesis (Ph. D.)--University of Chicago. / "Reprinted from the Physical review, vol. XVIII, no. 6, June, 1904."
25

Physical properties of some magnetic systems /

Gu, Ruoyu. January 2000 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2000. / Includes bibliographical references (leaves 116-126).
26

Magnetic anomalies over Antarctica and the surrounding oceans measured by MAGSAT

Ritzwoller, Michael Herman. January 1982 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1982. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 144-146).
27

Der temperatur-koëffizient des magnetismus einiger salzlösungen der eisengruppe mit besonderer berücksichtigung des eisenchlorids ...

Mosler, Hugo Bruno Hans, January 1901 (has links)
Inaug.-diss.--Leipzig. / Vita.
28

The effect of pressure upon magnetic permeability ...

Frisbie, Fannie Cornelia. January 1904 (has links)
Thesis (Ph. D.)--University of Chicago. / "Reprinted from the Physical review, vol. XVIII, no. 6, June, 1904."
29

Bidrag till kännedomen om magnetostriktionsfenomenet ...

Kruckenberg, Ivan. January 1907 (has links)
Akademisk afhandling--Upsala. / "Litteraturförteckning": p. [48]-49.
30

Ueber den im eisen durch schnell oscillirende stromfelder inducirten magnetismus ...

Varley, William Mansergh, January 1901 (has links)
Inaug.-dis.--Strassburg. / Vita.

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