Presently in ground vehicle industries, conducting durability tests is an essential step to predict the life of full vehicle, subsystem and component designs. The procedure of durability testing includes measuring the data in the test track, generating the accelerated loading profiles and implementing it by using the base excited shaker table. The problem associated with the implementation is the output loading profiles measured from the shaker table deviates from the desired input loading profiles. The engineering problem associated with the implementation is due to the unknown dynamics of the test structure, such as, nonlinear stiffness and damping. A new approach for the nonlinear system identification of continuous lightly damped system from the experimental data is presented. The new approach is based on the theory of force reconstruction, base excitation and nonlinear system identification. The methodology is verified by using the simulation example and is demonstrated by using the cantilever beam as an example. An experimental setup is designed, fabricated and installed in order to demonstrate the proposed methodology. The experimental setup is similar to that of industrial settings but with lower power range. Several experimental case studies are carried out to demonstrate the proposed methodology. The results from the experiments are the identification of viscous damping coefficient dependent upon the displacement amplitudes and the cubic stiffness nonlinearity.

The accelerated durability test is an important part for design and manufacturing ground vehicles. It consists of test designed to quantify the life characteristics of a ground vehicle component under normal use conditions by testing the unit at higher stress levels to accelerate the occurrence of failures. The challenge of conducting accelerated durability tests is to create the driven profile. In general, the mission profiles of the accelerated durability test can be generated via the acceleration data of the events experienced by the vehicle during the field test. Accurately separating the time series signal that correlate the load events becomes essential to efficiently generate the mission profiles for the accelerated test analysis. The representative Power Spectrum Density (PSD) profile can be generated based on the mission profiles. Then, the driven profile for the sub-scaled accelerated durability test, i.e., the acceleration data can be generated based on the PSD data.

This research investigated the effects of different doses of lithium on rats' behavior in an attempt to understand lithium's therapeutic mechanism of action in major affective disorders. / Although high doses (1.50 mEq/kg LiCl) decreased rats' open field activity, low doses (0.15 mEq/kg LiCl) increased activity, which is a new finding. A study of the effects of these two doses on reaction to environmental complexity and novelty suggested that, irrespective of dose, lithium increases readiness to engage in inspective exploration of a novel environment and promotes longer inspective exploration of a known complex environment. This was interpreted as increased selective attention to stimuli providing relevant information about the environment. The prediction derived from these findings, that both doses would decrease distractability, was supported in an experiment on tone-induced suppression of licking. / A two factor (activity, selective attention) model of lithium's action was proposed and its relevance to lithium's clinical efficacy in major affective disorders was discussed.

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Thesis (Ph. D.)--University of Hawaii at Manoa, 1982. / Bibliography: leaves 129-153. / Microfiche. / vii, 153 leaves, bound 29 cm

Includes author's previously published articles. / Bibliography: leaves 215-229. / xvii, 229 leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Psychology, 1998?

iv, 297 leaves : diags., photos ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Chemical Engineering, 1977

Thesis (Ph. D.)--University of Wisconsin--Madison, 1980. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 151-160).

"Submitted in partial fulfillment of the requirements for the degree of Master of Business Administration from the Naval Postgraduate School, June 2010." / Advisor(s): Rendon, Rene G. ; Yoder, E. Cory. "June 2010." "MBA Professional report"--Cover. Description based on title screen as viewed on July 14, 2010. Author(s) subject terms: Contingency Contracting, Proficiency Assessment Test, SMCT, 51C, Soldier's Manual of Common Tasks, Contracting, individual assessment, Training Includes bibliographical references (p. 73-76). Also available in print.

Thesis (M.S.) in Mechanical Engineering--University of Maine, 2004. / Includes vita. Includes bibliographical references (leaves 60-61).