Copyright Information: All rights reserved unless otherwise indicated. Contact the author or original publisher for any necessary permissions. eScholarship is not the copyright owner for deposited works. Learn more at iii The dissertation of Zachary T. Berndsen is approved, and it is acceptable in quality and form for publication on microfilm: 2015 iv DEDICATION I dedicate this work to my famil...

An article by Dr. Vannevar Bush (1) which appeared in 1945 can be considered as the beginning of the literature on mechanised information retrieval. In this article Dr. Bush described an imaginary machine, the "Memex", in which a research worker would store his personal library (principally on microfilm) together with other reports, papers, and records, and from which he would be able to select...

Copyright reserved. Subject to the exceptions provided for by law, no part of this publication may be reproduced and/or published in print, by photocopying, on microfilm or in any other way without the written consent of the copyrightholder(s); the same applies to whole or partial adaptions. The publisher retains the sole right to collect from third parties fees payable in respect of copying an...

Photooxygenation of 1,5-dihydroxynaphthalene to Juglone was studied in a falling film microreactor. Moderate conversion rates of up to 31% were achieved after just 160 s of exposure to visible light. In contrast, batch reactions gave much lower conversions of up to 14% after a prolonged time period of 10 min. The difference in performance is explained by the superior light penetration in the mi...

by Kenning Arlitsch and John Herbert Kenning Arlitsch and John Herbert are both at the J. Willard Marriott Library, University of Utah. Mr. Arlitsch (kenning.arlitsch© library.utah.edu 295 S. 1500 East, Room 463, Salt Lake City, UT84112) is Head of Information Technology, and Mr. Herbert (John. [email protected] 295 S. 1500 East, Room 418, Salt Lake City, UT 84112) is Program Director Ut...

This paper describes the generation of instability waves downstream of a leading edge by an imposed upstream disturbance. Two cases are considered. The first is concerned with mean flows of the Blasius type wherein the instabilities are represented by Tollmien-Schlichting waves. It is shown that the latter are generated fairly far downstream of the edge and are the result of a wave length reduc...

Candidate models of the forces which oppose the sinking of slabs are all constrained to produce results consistent with the following observation: relative geoid highs, which one assumes are due to slabs, characteristically occur over subduction zones. Certain models which are otherwise plausible, such as those based on a Newtonian half-space mantle, yield geoid lows instead of highs. This stud...

The frame problem arises in considering the logical structure of a robot's beliefs. It has been known for some years, but only recently has much progress been made. The problem is described and discussed. Various suggested methods for its solution are outlined, and described in a uniform notation. Finally, brief consideration is given to the problem of adjusting a belief system in the face of e...