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  • A low cost AC motor drive for battery powered applications

    Creator:
    Wiley, Brian
    Abstract:
    Environmental concerns have renewed the interest in electric vehicles. To gain widespread use, electric vehicles will also have to offer good performance and be reasonably priced. AC drive systems using modern semiconductors can provide efficient operation at the required power levels, but their cost at present is still too high....
    Resource Type:
    Masters Thesis
    Full Text:
    -suffering wife, Shirley. TABLE OF CONTENTS INTRODUCTION 1 SYSTEM OVERVIEW 4 CONTROL ALGORITHMS 6

  • Synthetic studies of nonadrides

    Creator:
    Drapela, Nicholas Ernest
    Abstract:
    An asymmetric approach to the synthesis of byssochlamic acid (1) is described. Regioisomeric enzymatic differentiation is described in the selective hydrolysis of dimethyl ester 30 by porcine liver esterase. Chiral dimethyl ester 42 was prepared by desymmetrization of cyclopentene 34 using porcine liver esterase. A key intramolecular [2+2]cycloaddition-cycloreversion photometathesis of...
    Resource Type:
    Dissertation
    Full Text:
    provide the diacid 31. ./ ./ 4. + 26 CO2H C H 2 N2 hv CO2H Et20 (91%) 28 LION THF-H20 (72%) 31

  • Evaluation and use of a soil mineralizable nitrogen test to determine the fertilizer nitrogen needs of winter wheat grown in western Oregon

    Creator:
    Baloch, Dost M.
    Abstract:
    The assessment of optimum nitrogen (N) fertilizer need for winter wheat (Triticum aestivum L.) is important for economic and environmental sustainability. A comprehensive understanding of fertilizer N requirement depends on estimation of the quantity of N needed by the crop versus that supplied by soil. The objectives of this study...
    Resource Type:
    Dissertation
    Full Text:
    OF CONTENTS (Continued) Page Results and Discussion 61 CHAPTER 4. EVALUATION OF NITROGEN

  • Regression testing experiments

    Creator:
    Sayre, Kent
    Abstract:
    Software maintenance is an expensive part of the software lifecycle: estimates put its cost at up to two-thirds of the entire cost of software. Regression testing, which tests software after it has been modified to help assess and increase its reliability, is responsible for a large part of this cost....
    Resource Type:
    Masters Thesis
    Full Text:
    Chapter 4: Empirical Study 2: Investigation of Program Spectra 29 4.1 Introduction 29 4.2 Program

  • An assessment of attitudes of mental health counselors toward persons with acquired immunodeficiency syndrome

    Creator:
    Christenson, Terri Jo
    Abstract:
    This study investigated the attitudes of mental health counselors toward persons with Acquired Immunodeficiency Syndrome (AIDS). Three hundred and fifty-eight members of the American Mental Health Counselors Association were mailed a survey packet including an Attitude Towards AIDS Victims scale and an additional two questions assessing comfort with clients with...
    Resource Type:
    Dissertation
    Full Text:
    within the Previous 12 Months to Persons Diagnosed with HIV/AIDS 66 4. Male Subjects Who Reported