1,927 research outputs found
Halpin, J L, QX18645
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/389898Surname: HALPIN. Given Name(s) or Initials: J L. Military Service Number or Last Known Location: QX18645. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 37320.214539
Item: [2016.0049.22191] "Halpin, J L, QX18645
Earliest Paleoproterozoic high-grade metamorphism and orogenesis in the Gawler Craton, South Australia: the southern cousin in the Rae family?
No full textAbstract not availableJacqueline A. Halpin, Anthony J. Rei
Halpin, Anthony A. (Death, 1902-01-06)
No full textAddress: 200 Calhoun St.Age at death: 2101/Pg 3/1902/WM S/City/Dr. A. Juettner/J. J. Sullivan/St. Jos. NewOriginal record filed in drawer labeled 'HALPIN-HANNO'
Halpin, Annie (Death, 1895-12-11)
No full textAddress: 815 Depot St.Age at death: 40Pg 120/1895/198/F W M/Cinti, Ohio/Dr. J. A. Haerr, Coroner/J. J. Sullivan & Co./St. Joseph NewOriginal record filed in drawer labeled 'HALPIN-HANNO'
Halpin, John (Death, 1901-12-23)
No full textAddress: 1559 W. 6th St.Age at death: 58 yrs.Pg 127/1901/459/MW M/Ireland/Engineer/Dr. A. M. Brown/John J. Radel/St. Joseph's NewOriginal record filed in drawer labeled 'HALPIN-HANNO'
The influence of the preparation method of NiOx photocathodes on the efficiency of p-type dye-sensitised solar cells
No full textImproving the efficiency of p-type dye-sensitized solar cells (DSCs) is an important part of the development of high performance tandem DSCs. The optimization of the conversion efficiency of p-DSCs could make a considerable contribution in the improvement of solar cells at a molecular level. Nickel oxide is the most widely used material in p-DSCs, due to its ease of preparation, chemical and structural stability, and electrical properties. However, improvement of the quality and conductivity of NiO based photocathodes needs to be achieved to bring further improvements to the solar cell efficiency. The subject of this review is to consider the effect of the preparation of NiO surfaces on their efficiency as photocathodes. (C) 2015 Elsevier B.V. All rights reserved
Prediction of the inertial effects due to bone conduction in a 2D box model of the cochlea
No full textEmergence of consensus and shared vocabularies in collaborative tagging systems
No full textThis article uses data from the social bookmarking site del.icio.us to empirically examine the dynamics of collaborative tagging systems and to study how coherent categorization schemes emerge from unsupervised tagging by individual users. First, we study the formation of stable distributions in tagging systems, seen as an implicit form of “consensus” reached by the users of the system around the tags that best describe a resource. We show that final tag frequencies for most resources converge to power law distributions and we propose an empirical method to examine the dynamics of the convergence process, based on the Kullback-Leibler divergence measure. The convergence analysis is performed for both the most utilized tags at the top of tag distributions and the so-called long tail. Second, we study the information structures that emerge from collaborative tagging, namely tag correlation (or folksonomy) graphs. We show how community-based network techniques can be used to extract simple tag vocabularies from the tag correlation graphs by partitioning them into subsets of related tags. Furthermore, we also show, for a specialized domain, that shared vocabularies produced by collaborative tagging are richer than the vocabularies which can be extracted from large-scale query logs provided by a major search engine. Although the empirical analysis presented in this article is based on a set of tagging data obtained from del.icio.us, the methods developed are general, and the conclusions should be applicable across other websites that employ tagging
Prediction of inertial effects due to bone conduction in a 2D box model of the cochlea
No full textA 2D box model of the cochlea has been used to predict the basilar membrane, BM, velocity and the fluid flow caused by two components of bone conduction: due to inertia of the middle ear and due to inertia of the cochlear fluids. A finite difference approach has been used with asymmetric fluid chambers, that enables an investigation of the effect of varying window stiffness, due to otosclerosis for example. The BM is represented as a series of locally reacting single degree of freedom systems, with graded stiffness along the cochlea to represent the distribution of natural frequencies and with a damping representative of the passive cochlea. The velocity distributions along the passive BM are similar for harmonic excitation via the middle ear inertia or via the fluid inertia, but the variation of the BM velocity magnitude with excitation frequency is different in the two cases. Excitation via the middle ear is suppressed if the oval window is assumed to be blocked, but the excitation via the cochlear fluids is still possible. By assuming a combined excitation due to both middle ear and fluid excitation, the difference between the overall response can be calculated with a flexible and a blocked oval window, which gives a reasonable prediction of Carhart’s notch
A comparison of homogenization, Hashin-Shtrikman bounds and the Halpin-Tsai equations
No full textsummary:In this paper we study a unidirectional and elastic fiber composite. We use the homogenization method to obtain numerical results of the plane strain bulk modulus and the transverse shear modulus. The results are compared with the Hashin-Shtrikman bounds and are found to be close to the lower bounds in both cases. This indicates that the lower bounds might be used as a first approximation of the plane strain bulk modulus and the transverse shear modulus. We also point out the connection with the Hashin-Shtrikman bounds and the Halpin-Tsai equations. Optimal bounds on the fitting parameters in the Halpin-Tsai equations have been formulated
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