662,804 research outputs found
Quench characteristics of a Cu-Stabilized 2G HTS conductor
No full textThe prospect of medium/high field superconducting magnets using 2G HTS tapes is approaching to reality with continued enhancement in the performance of these conductors. Direct measurements of 1d adiabatic quench initiation and propagation of a Cu-stabilized 2G conductor have been carried out with spatial-temporal recording of temperature and voltage following the deposition of various local heat pulses to the conductor at different temperatures between 40K and 64K carrying different transport currents. It was found that the stabilizer-free 2G tape maintains the unique characteristics previously measured in non-stabilized tape of increasing MPZ with transport current and higher quench energy at lower temperatures. The minimum quench energy, minimum propagation zone (MPZ) length are determined as a function of temperature and transport current. The change in MPZ size is investigated with measured temperature dependent E-J characteristics. The results add more detail to help understand the unique characteristics of increasing MPZ with transport current and lower temperatures
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
Opening of the School of Art Gallery, Australian National University, Canberra, 2007 [picture] /
No full textTitle devised by cataloguer based on information from inscription.; Part of the collection: Breathing the rarefied air of Canberra, 2007.; Inscriptions: "I did a lot of socializing at the School of Art Gallery. It was only five minutes away from my apartment and most people I know came here at sometime or another. I learnt to come early as the students would eat and drink everything in sight in the first 20 minutes"--In ink upper right on image; "Opening of the School of Art Gallery. ANU. From the series, 'Breathing the rarefied air of Canberra, William Yang, 2007. 1/20--In ink on sheet below photograph.; Condition: Left edge roughly cut.; Photographer's stamp lower right.; Also available in electronic version via the Internet at: http://nla.gov.au/nla.pic-vn4399585; Purchased from Helen Maxwell Gallery, 2008.Opening of the School of Art Gallery, AN
Distributed human computation framework for linked data co-reference resolution
No full textDistributed Human Computation (DHC) is a technique used to solve computational problems by incorporating the collaborative effort of a large number of humans. It is also a solution to AI-complete problems such as natural language processing. The Semantic Web with its root in AI is envisioned to be a decentralised world-wide information space for sharing machine-readable data with minimal integration costs. There are many research problems in the Semantic Web that are considered as AI-complete problems. An example is co-reference resolution, which involves determining whether different URIs refer to the same entity. This is considered to be a significant hurdle to overcome in the realisation of large-scale Semantic Web applications. In this paper, we propose a framework for building a DHC system on top of the Linked Data Cloud to solve various computational problems. To demonstrate the concept, we are focusing on handling the co-reference resolution in the Semantic Web when integrating distributed datasets. The traditional way to solve this problem is to design machine-learning algorithms. However, they are often computationally expensive, error-prone and do not scale. We designed a DHC system named iamResearcher, which solves the scientific publication author identity co-reference problem when integrating distributed bibliographic datasets. In our system, we aggregated 6 million bibliographic data from various publication repositories. Users can sign up to the system to audit and align their own publications, thus solving the co-reference problem in a distributed manner. The aggregated results are published to the Linked Data Cloud
Portraits of Nicholas Ng and Dan McMillan, Turner, Canberra, 2007 [picture] /
No full textTitle devised by cataloguer based on information from inscription.; Part of the collection: Breathing the rarefied air of Canberra, 2007.; Inscriptions: "Nick played erhu, chinese violin in my performance piece, 'China' which I worked on as part of my Coombs Fellowship at ANU. He and Dan were my main contacts when I first arrived. They were a gorgeous couple, popular, and in great demand even through they were frequently late"--In ink upper right on image; "Nicholas Ng and Dan McMillan, Turner. From the series, 'Breathing the rarefied air of Canberra' William Yang, 2007. 1/20"--In ink on sheet below photograph.; Photographer's stamp lower right.; Condition: Right edge roughly cut.; Also available in electronic version via the Internet at: http://nla.gov.au/nla.pic-vn4401373; Purchased from Helen Maxwell Gallery, 2008.Nicholas Ng and Dan McMilla
Interior view of Liversidge Court apartment, Australian National University accomodation, Canberra, 2007 [picture] /
No full textTitle devised by cataloguer based on information from inscription.; Part of the collection: Breathing the rarefied air of Canberra, 2007.; Inscriptions: "My apartment in the Liversidge complex was fine. I'd brought my rice cooker and I went out and bought a cushion and a decent sharp knife"--In ink upper right on image; Liversidge Court apartment. From the series, 'Breathing the rarefied air of Canberra, William Yang, 2007. 1/20--In ink on sheet below photograph.; Photographer's stamp lower left.; Also available in electronic version via the Internet at: http://nla.gov.au/nla.pic-vn4398811; Purchased from Helen Maxwell Gallery, 2008.Liversidge Court apartmen
Stanner Building and CRIO cottage, Australian National University, Canberra, 2007 [picture] /
No full textTitle devised by cataloguer based on information from inscription.; Part of the collection: Breathing the rarefied air of Canberra, 2007.; Inscriptions: "Stanner Building, ANU. From the series, 'Breathing the rarefied air of Canberra, I had an office in this building but spent most of my time making scans at CRIO cottage, on the right. William Yang, 2007. 1/20--In ink on sheet below photograph.; Photographer's stamp lower left.; Also available in electronic version via the Internet at: http://nla.gov.au/nla.pic-vn4398847; Purchased from Helen Maxwell Gallery, 2008.Stanner Buildin
Hail remaining after a storm, seen outside of kitchen window at Liversidge Court apartment, Australian National University accomodation, Canberra, 2007 [picture] /
No full textTitle devised by cataloguer based on information from inscription.; Part of the collection: Breathing the rarefied air of Canberra, 2007.; Inscriptions: "That morning Adele emailed me: The storm hit just as friends and I were leaving a restaurant. When it was safe to venture out we had to walk through six inches of hail to get to the car. Our shoes were full of hailstones and our feet were freezing. All this was exacerbated by our attempts to rescue as many birds as we could. They had been thrown from the trees and trapped in the ice on the ground. A galah died even though I had been trying to warm it underneath my clothes. It's feet were frozen stiff and it couldn't move. I saved a magpie though. After 15 minutes inside my jacket it had come alive and we released it 10 minutes out of Civic where there was no ice. Best Adele, Wednesday 28 Feb."--In ink centre on image; "Hail. #3. From my kitchen window. ANU. From the series, 'Breathing the rarefied air of Canberra. William Yang, 2007. 1/20--In ink on sheet below photograph.; Condition: Right edge roughly cut.; Photographer's stamp middle right.; Also available in electronic version via the Internet at: http://nla.gov.au/nla.pic-vn4399529; Purchased from Helen Maxwell Gallery, 2008.Hail, #
Receiver Multiuser Diversity Aided Multi-Stage MMSE Multiuser Detection for DS-CDMA and SDMA Systems Employing I-Q Modulation
No full textThe so-called receiver multiuser diversity aided multistage minimum mean-square error multiuser detector (RMD/MS-MMSE MUD), which was proposed previously by the author, is investigated in the context of the direct-sequence code-division multiple-access (DS- CDMA) and space-division multiple-access (SDMA) systems that employ in- and quadrature-phase (I-Q) modulation schemes. A detection scheme is studied, which is operated in real domain in the principles of successive interference cancellation (SIC). The concept of noise recognition factor (NRF) is proposed for explaining the efficiency of SIC-type detectors and also for motivating to design other high-efficiency detectors. The achievable bit error rate (BER) performance of the RMD/MS-MMSE MUD is investigated for DS-CDMA and SDMA systems of either full-load or overload, when communicating over Rayleigh fading channels for the SDMA and over either additive white Gaussian noise (AWGN) or Rayleigh fading channels for the DS-CDMA. The studies and performance results show that the RMD/MS-MMSE MUD is a highly promising MUD. It has low implementation complexity and good error performance. Furthermore, it is a high-flexibility detector suitable for various communication systems operated in different communication environments
Undergraduates, Heather Kerr and Helen Braund socialising at the School of Arts, Australian National University, Canberra, 2007 [picture] /
No full textTitle devised by cataloguer based on information from inscription.; Part of the collection: Breathing the rarefied air of Canberra, 2007.; Inscriptions: "Undergrads #4. School of Arts. From the series, 'Breathing the rarefied air of Canberra'. Martyn Jolly from the School of Art assigned Heather Kerr and Helen Braund to help me as part of their training. They were smart, they could find their way around the computer. I was always asking, 'How did you do that?' William Yang, 2007. 1/20"--In ink on sheet below photograph.; Condition: Upper and left edges roughly cut.; Photographer's stamp lower right.; Also available in electronic version via the Internet at: http://nla.gov.au/nla.pic-vn4399499; Purchased from Helen Maxwell Gallery, 2008.Undergrads #
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