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Multivariate analysis of flow cytometry dataCollins, Gary Stephen January 2000 (has links)
No description available.
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Optimization of recombinant Escherichia coli and Cephalosporium acremonium fed batch fermentations, with the use of oxygen enrichment and near infrared spectroscopyMacaloney, Graeme January 1994 (has links)
No description available.
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Density functional theory study of oxidized epitaxial grapheneZhou, Si 27 August 2014 (has links)
Graphene oxide (GO) is a material of both fundamental and applied interest. Elucidating this complex material is crucial to both control its physical chemical properties and enable its applications in technology. Graphene oxide films synthesized from epitaxial graphene on silicon carbide constitute a particular -- simplified -- form of GO, suitable for fundamental physical chemistry studies of oxidized sp2 carbon materials. In this thesis work, I used density functional theory calculations and I developed a lattice-model Monte Carlo scheme to elucidate puzzling experimental observations and to gain molecular insight into the chemical composition, thermochemical and structural properties of this type of ultrathin GO films on silicon carbide substrates.
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Low-density Parity-check Codes for Wireless Relay NetworksZhou, Xinsheng January 2013 (has links)
In wireless networks, it has always been a challenge to satisfy high traffic throughput demands, due to limited spectrum resources. In past decades, various techniques, including cooperative communications, have been developed to achieve higher communication rates.
This thesis addresses the challenges imposed by cooperative wireless networks, in particular focusing on practical code constructions and designs for wireless relay networks. The thesis is divided into the following four topics: 1) constructing and designing low-density parity-check (LDPC) codes for half-duplex three-phase two-way relay channels, 2) extending LDPC code constructions to half-duplex three-way relay channels, 3) proposing maximum-rate relay selection algorithms and LDPC code constructions for the broadcast problem in wireless relay networks, and 4) proposing an iterative hard interference cancellation decoder for LDPC codes in 2-user multiple-access channels.
Under the first topic, we construct codes for half-duplex three-phase two-way relay channels where two terminal nodes exchange information with the help of a relay node. Constructing codes for such channels is challenging, especially when messages are encoded into multiple streams and a destination node receives signals from multiple nodes. We first prove an achievable rate region by random coding. Next, a systematic LDPC code is constructed at the relay node where relay bits are generated from two source codewords. At the terminal nodes, messages are decoded from signals of the source node and the relay node. To analyze the performance of the codes, discretized density evolution is derived. Based on the discretized density evolution, degree distributions are optimized by iterative linear programming in three steps. The optimized codes obtained are 26% longer than the theoretic ones.
For the second topic, we extend LDPC code constructions from half-duplex three-phase two-way relay channels to half-duplex three-way relay channels. An achievable rate region of half-duplex three-way relay channels is first proved. Next, LDPC codes for each sub-region of the achievable rate region are constructed, where relay bits can be generated only from a received codeword or from both the source codeword and received codewords.
Under the third topic, we study relay selection and code constructions for the broadcast problem in wireless relay networks. We start with the system model, followed by a theorem stating that a node can decode a message by jointly decoding multiple blocks of received signals. Next, the maximum rate is given when a message is decoded hop-by-hop or decoded by a set of nodes in a transmission phase. Furthermore, optimal relay selection algorithms are proposed for the two relay schemes. Finally, LDPC codes are constructed for the broadcast problem in wireless relay networks.
For the fourth topic, an iterative hard interference cancellation decoder for LDPC codes in 2-user multiple-access channels is proposed. The decoder is based on log-likelihood ratios (LLRs). Interference is estimated, quantized and subtracted from channel outputs. To analyze the codes, density evolution is derived. We show that the required signal-to-noise ratio (SNR) for the proposed low-complexity decoder is 0.2 dB higher than that for an existing sub-optimal belief propagation decoder at code rate 1/3.
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A general approach to the study of L1 asymptotic unbiasedness of kernel density estimators in RdStinner, Mark 26 August 2013 (has links)
A technique for establishing L1 asymptotic unbiasedness of a kernel density
estimator in Rd that does not depend on the form of the kernel function will be
demonstrated. We will introduce the concept of a region sequence of a sequence
of kernel functions and show how this can be used to give necessary and sufficient
conditions for L1 asymptotic unbiasedness. These results are then applied to kernel
density estimators whose form is given and a number of known and novel results
are obtained.
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Evaluation of quantitative ultrasound in the diagnosis of osteopenia and osteoporosisFrost, Michelle Lorraine January 2000 (has links)
No description available.
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Dynamical studies of the sun in the Extreme Ultraviolet (EUV)O'Shea, Eoghan Francis January 1997 (has links)
No description available.
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Characterization of ionic liquidsDe La Osa, Maria Jose Torres January 2001 (has links)
No description available.
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Precipitation of charged particles into the midlatitude upper atmosphereChamberlain, Malcolm Trevor January 1977 (has links)
viii, 145 leaves : ill. ; 30 cm / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Mawson Institute, 1978
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The effects of wetting and drying on soil physical properties / by Wani Hadi UtomoUtomo, Wani Hadi January 1980 (has links)
Typescript (photocopy) / xx, 251 leaves, [6] leaves of plates : ill. (part col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Soil Science, 1982
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