Science

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  • (2000) Zhang, Guangqing; Cheng, Chun-Chung; Du, X; Zhao, Yong
    Journal Article
    Bi1.7Pb0.3Sr2Ca2Cu3O10+y was used as an example of Cuprates for our study. The subtle thermal transitions and the jumps of the parameters appear in the sample at about 300 and 700oC, respectively. The unit cell of the sample is composed of two structural blocks: perovskite and rock salt. The size of every block along c direction is about a nanometer. What should be made clear is whether the two thermal and structural changes take place in the whole cell or from different blocks. The bond lengths in the unit cell are analyzed carefully before and after two thermal and structural changes based on the results of X-ray diffraction. Careful analysis of the bond length in the samples demonstrates that the two jumps of the parameters are correlated with the two blocks. After the jump at about 300oC, the bond lengths in the rock salt block change more significant than in the perovskite block. After the jump at about 700oC, the bond lengths in the perovskite block change more significant than in the rock salt block. The change of the bond lengths clearly shows that the different thermal transitions and the jumps of the parameters take place in different blocks.

  • (2006) Schubert, Emery; Wolfe, Joseph
    Journal Article
    Two models that predict perceived timbrai brightness in terms of the centroid of the frequency spectrum were investigated. One model simply uses the centroid of the frequency spectrum, the other divides this same value by the fundamental frequency: the latter scales the centroid of the frequency spectrum with the fundamental frequency. Different single tone and pitch combinations, presented sequentially, were compared. Participants were not asked to ignore pitch differences and intervals of greater than an octave were compared. The results indicate that brightness is much better correlated with frequency spectrum centroid (r = 0.513, p less than or equal 0.01) than with the ratio of the centroid of the frequency spectrum to the fundamental frequency (r = 0.030. p = 0.441).

  • (2003) Wolfe, Joseph; Schubert, Emery; Butchatsky, Kristen; Solar, Stela
    Conference Paper
    live performance

  • (2008) Jones, Sarah; Laffan, Shawn
    Journal Article
    To reconstruct an indigenous language known solely from historical wordlists, the linguist needs to decide which source wordlists are most relevant, i.e. which sources are most likely to be attestations of the language to be reconstructed. There is little published research on methods appropriate to this task, and yet there is increasing attention to indigenous language reconstruction in support of language revival and revitalisation in education and community contexts. This paper describes a replicable and relatively objective method for comparing lexical similarity within a set of historical sources. The method described draws on the use of measures of lexical similarity in linguistics and the use of measures of endemism in biogeography. The method is illustrated via an analysis of historical sources for Aboriginal languages from the greater Sydney region, New South Wales, Australia.

  • (2008) Cranney, Jacquelyn; Jones, Gwyn; Morris, Suzanne; Starfield, Sue; Martire, Kristy; Newell, Benjamin; Wong, Kwan
    Conference Paper

  • (2010) Brener, Loren; Von Hippel, William; Kippax, Susan; Preacher, Kristopher
    Journal Article
    In 2005, 60 health care workers were recruited through services that attract injecting drug users (IDUs) and asked to complete attitude measures regarding IDU clients. Mediation analyses indicated that conservative health care workers displayed more negative attitudes toward their IDU clients because they believe that injecting drug use is within the control of the IDU. Negative attitudes toward IDU clients, in turn, were associated with worry about IDU clients' behavior in the clinic and with beliefs that IDU clients should disclose their hepatitis C status to their health care worker. Perceptions of controllability of drug use were also associated with the belief that IDU clients' ailments were caused by their IDU status. The study's limitations are noted.

  • (2008) Gerressu, M; Elam, Gillian; Shain, R; Dimmitt Champion, J; Brook, G; Elford, J; Bonell, C; French, R; Stephenson, Jodie; Imrie, John
    Report

  • (2006) Turner, J. M.; Rider, A. T.; Copas, A. J.; Edwards, S. G.; Dodds, Julie; Imrie, John; Stephenson, Jodie
    Journal Article

  • (2005) Mercer, C. H.; Hart, G; Imrie, John; Stephenson, Jodie
    Journal Article

  • (2003) Davis, M; Mercer, C. H.; Black, S; Copas, A. J.; Hart, G; Davidson, O. R.; Williams, I. G.; Stephenson, Jodie; Imrie, John
    Journal Article