4,058 research outputs found
Nanodiamond in tellurite glass Part I: origin of loss in nanodiamond-doped glass
No full textAbstract not availableHeike Ebendorff-Heidepriem, Yinlan Ruan, Hong Ji, Andrew D. Greentree, Brant C. Gibson, and Tanya M. Monr
Diamond in fibre magnetometry: understanding the effects of step-index fibre design on dipole coupling
No full textpaper C7H_4Hybrid diamond-fibre systems are interesting as robust platforms for magnetometry. Here we model the coupling between diamond fluorescent emitters and guided fibre modes for three core-cladding ratios, and varying core diameter to inform our experimental investigations.Shuo Li, Dongbi Bai, Andrew D. Greentree, Scott Foster, Heike Ebendorff-Heidepriem, Shahraam Afshar and Brant C. Gibso
Nanodiamond in tellurite glass Part II: practical nanodiamond-doped fibers
No full textAbstract not availableYinlan Ruan, Hong Ji, Brett C. Johnson, Takeshi Ohshima, Andrew D. Greentree, Brant C. Gibson, Tanya M. Monro, and Heike Ebendorff-Heideprie
Optical fibre coated with diamond nanocrystals: novel sensing architecture
No full textTheoretical model of power radiated by a nanodiamond crystal located at the surface of a fiber shows narrow peaks that are extremely sensitive to the refractive-index of the surrounding environment suggesting an architecture for efficient refractive-index sensing.Shahraam Afshar V., Matthew R. Henderson, Andrew D. Greentree, and Tanya M. Monrohttp://www.iqec-cleopr2011.com/http://www.opticsinfobase.org/abstract.cfm?URI=CLEOPR-2011-C54
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Efficient coupling of emission of embedded single photon sources within optical fibres
No full textWe investigate the coupling of single photon emission from diamond colour centres embedded within the fibre core into the fibre’s guided modes. By approximating diamond colour centre emission as a dipole, we investigate the capture power for different core sizes and for various locations and orientations of the emitting dipole. We then use finite-difference time domain methods to check predictions of this calculation.Matthew R. Henderson, Shahraam Afshar V., Andrew D. Greentree, Heike Ebendorff-Heidepriem and Tanya M. Monrohttp://www.plevin.com.au/acoftacols2009/Program.pd
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Andrew D. White Professors-At-Large lectures.
No full textRecorded in Ithaca, NY by Cornell University., Sponsored by: Andrew D. White Professors-At-Large Program., Speaker(s): Well-known author., Reading, March 27, 1985.43 minutesWelty reads her short story, The Wide Net.1_1b7n8g9v1_hknzm40
EVALUATION OF WILLOW OAK ACORN PRODUCTION AND THE EFFECTS OF MIDSTORY CONTROL AND FLOODING ON UNDERPLANTED WILLOW OAK SEEDLINGS IN TWO ARKANSAS GREENTREE RESERVOIRS
No full textBottomland hardwood stands managed as greentree reservoirs (GTRs) provide critical habitat for numerous wildlife species. The oak component in GTRs is of critical importance to wildlife managers since oaks produce high energy foods during the winter. However, GTR management warrants concern since it has been linked to increased mortality and insufficient regeneration of desirable species. This project evaluates willow oak acorn production and the effects of flooding and midstory control on the survival and growth of planted willow oak seedlings. Winter flooding reduced survival of seedlings inundated in early October but did not reduce survival of seedlings inundated in mid-November. Midstory control did not produce desired light levels for the future survival of underplanted seedlings. Acorn production was good for both years. Trees with DBH between 55 and 65 cm produced the majority of sound acorns. Acorn production was likely adequate to support foraging waterfowl and natural regeneration
Optical fibre with embedded diamond nanocrystals: Towards a high collection efficiency, waveguided single photon source
No full textA model for the capture of diamond colour centre emission by a step-index fibre, including effects due to the fibre core-cladding interface, is presented. We investigate the parameter space for optimal single photon capture.M. R. Henderson, S. Afshar V., A. D. Greentree and T. M. Monrohttp://www.opticsinfobase.org/abstract.cfm?URI=QELS-2011-QThE
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