No description available.

Thesis (Ph. D.)--University of California, Santa Cruz, 1996. / Typescript. Includes bibliographical references (leaves 82-91).

Thesis (M.Sc.)--York University, 2004. Graduate Programme in Kinesiology and Health Science. / Typescript. Includes bibliographical references (leaves 91-99). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url%5Fver=Z39.88-2004&res%5Fdat=xri:pqdiss &rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR11862

TITLE: THE SOUND OF MUSIC: THE INFLUENCE OF EVOKED EMOTION ON RECOGNITION MEMORY FOR MUSICAL EXCERPTS ACROSS THE LIFESPAN Socioemotional Selectivity Theory (Carstensen, 1999) posits that as people age, they selectively focus on positive aspects of emotional stimuli as opposed to negative as a way of regulating emotions. Thus, older adults remember positive information better than negative. This hypothesis has been tested extensively with visual stimuli, but rarely with auditory stimuli. Findings from this study provide support in the auditory domain. In this study, 135 younger, middle-aged, and older adults heard consonant (pleasant) and dissonant (unpleasant) musical excerpts. Participants were randomly assigned to either a Study Only condition, in which they heard excerpts and studied them for later recognition, a Rate Only condition, in which they rated the excerpts and were tested later in a surprise recognition test, or a Rate and Study condition, in which they rated and studied the excerpts for later recognition. Results indicated that younger, middle-aged and older adults remembered consonant (pleasant) musical excerpts better than dissonant (unpleasant) musical excerpts overall and provide support for the hypotheses of the Socioemotional Selectivity Theory.

No description available.

published_or_final_version / abstract / Psychology / Doctoral / Doctor of Philosophy

The purpose of the present study was to determine if persons who had made a recent decision would be selective in seeking information related to their decisions. Also under consideration were the explanation for any selectivity exhibited, and the explanation for any variance in the degree of selectivity manifested.

No description available.

Thesis advisor: Mary F. Roberts / There is substantial interest in exploring antibiotic alternatives with a new mode of action due to the increasing rates of bacterial resistance against current antibiotics. Antimicrobial peptides (AMPs) may take up the battle against bacteria in the future because as a result of their membrane-lysis mechanism, it is more difficult for bacteria to develop resistance against AMPs. Although AMPs could preferentially bind to and disrupt negatively charged bacterial membranes through electrostatic and hydrophobic interactions, there is still a great need to further increase the potency and selective toxicity towards bacteria for clinical applications. Herein, we present two strategies to improve the selectivity: light activation and environment-responsive moiety incorporation. Along the way, we also explored the effect of structure stabilization on AMPs action. A well-characterized antimicrobial peptide magainin 2 (mag2) was used as a prototype. Chemical manipulations of mag2 sequence were achieved by incorporation of unnatural amino acids. The selectivity was then tested on liposomes as a membrane model, as well as on bacterial cells and human red blood cells (hRBCs). Different extents of selectivity enhancement were observed from the modified peptides, and within the attempts to illustrate these results, we have gained useful information revealing the membrane-lysis mechanism, which may help us to rationally design and engineer AMPs as therapeutic drugs in the future. / Thesis (MS) — Boston College, 2011. / Submitted to: Boston College. Graduate School of Arts and Sciences. / Discipline: Chemistry.

Thesis (Ph. D.)--University of Hong Kong, 2006. / Title proper from title frame. Also available in printed format.