Adams, ED, Haley, RP & Ni, W 1996, 'Comment on “Nuclear Magnetic Ordering of3He Clusters in Solid4He”', Physical Review Letters, vol. 77, no. 26, pp. 5308-5308.
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Andrews, P, Town, RM, Hedley, MJ & Loganathan, P 1996, 'Measurement of plant-available cadmium in New Zealand soils', AUSTRALIAN JOURNAL OF SOIL RESEARCH, vol. 34, no. 3, pp. 441-452.
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Several methods of measuring plant-available cadmium (Cd) were compared using soils that had accumulated Cd under normal New Zealand agricultural practices (low total Cd concentrations, and phosphatic fertiliser as the dominant Cd source). The study encompassed 9 New Zealand soils with different Cd input histories. Cadmium was extracted from these soils by demineralised water, 0.05 M Na2EDTA, l M NH4OAC (pH 7), 0.01 M CaCl2, and 0.05 M CaCl2 and quantified by differential pulse anodic stripping voltammetry (DP-ASV) and graphite furnace atomic absorption spectrophotometry (AAS). The DP-ASV measures the free Cd ion and that associated with labile complexes, but not large organic Cd complexes. Extractable Cd levels were compared with those which are plant-available, as determined by pot studies (lettuce). The 0.01 M CaCl2-extractable Cd measured by AAS and 0.05 M CaCl2-extractable Cd measured by DP-ASV gave the best estimate of plant availability of Cd.
Bawab, S, Kinzel, GL & Waldron, KJ 1996, 'Rectified Synthesis of Six-Bar Mechanisms With Well-Defined Transmission Angles for Four-Position Motion Generation', Journal of Mechanical Design, vol. 118, no. 3, pp. 377-383.
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This paper describes a rectified synthesis method where a rigid body of a six-bar linkage with well-defined transmission angles is guided to pass through four precision positions. The procedure includes the elimination of circuit, branch, and order defects. This is achieved by decomposing the six-bar mechanism into groups of vector pairs called dyads and groups of three vectors called triads. The algebraic method of synthesis can be applied to rectify those chains. Although these defects can be eliminated, it has been a challenging task in the past. The procedure has been implemented for a Watt I crank-driven six-bar linkage in the interactive synthesis package RECSYN.
Boyce, RR, Morton, JW, Houwing, AFP, Mundt, C & Bone, DJ 1996, 'Computational fluid dynamics validation using multiple interferometric views of a hypersonic flowfield', Journal of Spacecraft and Rockets, vol. 33, no. 3, pp. 319-325.
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Brown, K 1996, 'Imprinting mutation in the Beckwith-Wiedemann syndrome leads to biallelic IGF2 expression through an H19-independent pathway', Human Molecular Genetics, vol. 5, no. 12, pp. 2027-2032.
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The Beckwith-Wiedemann syndrome (BWS) is genetically linked to chromosome 11p15.5, and a variety of observations suggest that deregulation of imprinted genes in this region is causally involved in the pathogenesis of the disease. It has been shown that in some patients without cytogenetic abnormalities the otherwise repressed maternal copy of the insulin-like growth factor 2 (IGF2) gene is expressed, leading to biallelic expression of IGF2. In some of these cases, this is accompanied by repression and DNA methylation of the maternal (otherwise active) copy of the neighbouring H19 gene. Hence, it is attractive to think that mutations may interfere with some aspect of H19 imprinting, thus leading to an inactive maternal allele, and indirectly to activation of the maternal IGF2 allele as reported in mice with an H19 gene deletion. However, no mutations have been identified so far in these patients. The only known mutations associated with BWS are maternally transmitted translocations, which are clustered in two locations centromeric to IGF2. The first cluster is 200-400 kb from IGF2 and the second is several megabases away. Hence, genes located far from the translocation breakpoints are potentially deregulated by them. Here we provide the first evidence of alteration of imprinting in a translocation family, with biallelic expression of IGF2 and altered DNA replication patterns in the IGF2 region. Interestingly, H19 imprinting was normal, suggesting an H19-independent pathway to biallelic IGF2 transcription, DNA methylation in IGF2 remained monoallelic, suggesting that the mutation in this family had uncoupled allele-specific methylation from expression.
Burnett, IS & Gambino, PMB 1996, 'Pitch detection based on prototype waveforms', Proceedings of the International Symposium on Signal Processing and its Applications, ISSPA, vol. 1, pp. 73-76.
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This paper describes a pitch detection algorithm which builds on the `Composite Autocorrelation' method. By explicitly considering `prototype' waveforms within the constituent autocorrelation computations, and detecting the pitch at frequent (5 ms) intervals, the algorithm produces a robust and continuous pitch track. This leads to a reduced-delay algorithm that overcomes many of the difficulties encountered when using autocorrelation-based techniques in Prototype Waveform (PW) / Waveform Interpolation (WI) coders. In particular, the technique is able to rapidly track the onsets of voiced and unvoiced speech sections. The algorithm is also able to maintain track for both high and low pitch speakers with promising results at this reduced delay.
Burnett, IS & Parry, JJ 1996, 'On the effects of accent and language on low rate speech coders', Proceeding of Fourth International Conference on Spoken Language Processing. ICSLP '96, vol. 1, pp. 291-294.
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Carey, DG, Nguyen, TV, Campbell, LV, Chisholm, DJ & Kelly, P 1996, 'Genetic influences on central abdominal fat: a twin study.', Int J Obes Relat Metab Disord, vol. 20, no. 8, pp. 722-726.
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INTRODUCTION: Recent studies of regional fat distribution have focused on the clinical importance of central abdominal obesity. Central adiposity is strongly related to insulin resistance, non-insulin dependent diabetes mellitus (NIDDM), dyslipidaemia and cardiovascular disease. While significant genetic influences on body mass index (BMI), total body and subcutaneous fat have been demonstrated, the inheritance of central abdominal obesity, has not been studied. OBJECTIVE: To assess genetic effects on regional fat distribution and associated metabolic parameters. DESIGN AND SUBJECTS: We directly measured total body, central abdominal (C-abd) and non-abdominal fat using dual energy X-ray absorptiometry in 50 monozygotic (MZ) and 36 dizygotic (DZ) female twins, of age (mean +/- SD), 44 +/- 12 and 47 +/- 14 y; BMI 24 +/- 5 and 24 +/- 3 kg/m2; C-abd fat 33 +/- 9 and 32 +/- 9%, respectively. Total variance in all parameters was independent of zygosity and genetic analyses of regional adiposity were performed before and after adjusting for age and percentage total body fat. RESULTS: A genetic influence was observed on the population variance in total fat, C-abd fat (C-abd fat rMZ = 0.66 vs rDZ = 0.20, p = 0.03) and non abdominal fat. After adjusting C-abd fat for age and total body fat there was a independent genetic influence on C-abd fat accounting for approximately 70% of the population variance (rMZ = 0.61 vs rDZ = 0.40, p = 0.001). CONCLUSION: The majority of inter-subject variance in central abdominal fat in non-obese individuals is due to genetic factors. The inheritance of abdominal obesity, with its associated metabolic consequences, may contribute to the familial aggregation of insulin resistance, diabetes and cardiovascular disease.
Chang, J, Tsai, LJ & Vigneswaran, S 1996, 'Experimental investigation of the effect of particle size distribution of suspended particles on microfiltration', Water Science and Technology, vol. 34, no. 9, pp. 133-140.
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Suspended particle size is one of the main factors which affect the performance of the microfiltration. Experimental results with bi and trimodal suspensions of latex particles clearly showed that the permeate flux and the quality were significantly affected by the particle size and its distribution, especially when the particle size was smaller than the pore size of the membrane.
Chang, JS, Tsai, LJ & Vigneswaran, S 1996, 'Experimental investigation of the effect of particle size distribution of suspended particles on microfiltration', Water Science and Technology, vol. 34, no. 9, pp. 133-140.
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Suspended particle size is one of the main factors which affect the performance of the microfiltration. Experimental results with bi and trimodal suspensions of latex particles clearly showed that the permeate flux and the quality were significantly affected by the particle size and its distribution, especially when the particle size was smaller than the pore size of the membrane.
Dubeau, F & Shannon, AG 1996, 'A Fibonacci model of infectious disease', FIBONACCI QUARTERLY, vol. 34, no. 3, pp. 257-270.
Eigenbrod, KD, Knutsson, S & Sheng, D 1996, 'Pore-Water Pressures in Freezing and Thawing Fine-Grained Soils', Journal of Cold Regions Engineering, vol. 10, no. 2, pp. 77-92.
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Esselle, KP 1996, 'A low-profile rectangular dielectric-resonator antenna', IEEE Transactions on Antennas and Propagation, vol. 44, no. 9, pp. 1296-1297.
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Esselle, KP 1996, 'Circularly polarised higher-order rectangular dielectric-resonator antenna', Electronics Letters, vol. 32, no. 3, pp. 150-150.
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Finn, GD, Lister, R, Szabo, T, Simonetta, D, Mulder, H & Young, R 1996, 'Neural networks applied to a large biological database to analyse dairy breeding patterns', Neural Computing & Applications, vol. 4, no. 4, pp. 237-253.
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The paper recounts the investigation of a dairy sire prediction capability based on Cascade Correlation neural networks to study influences relating the performance of offspring to their parents. The context of the problem is the artificial insemination breeding program for the Australian dairy industry. The networks are used to screen observed information in the database to relate it to best combinations of dam and sire. The voluminous data is quite noisy and is subject to genetic and environmental influences. The intention is to extract linear and nonlinear relationships from among the input variables without specifying their form. A number of scenarios are employed which recast the data into different forms. In particular, it was discovered that the problem could be restructured and the data supplemented with transformed data to produce succinct input patterns of manageable dimensionality, which allowed for a substantially improved predictive capability. It was then found that reasonable daughter predictions could be obtained of about 10%, as measured by her milk production. Results are compared with those obtained using two alternate neural network methods. Crude statistical methods are employed to evaluate the performance of the neural networks.
Funaki, K, Miyanaga, Y & Tochinai, K 1996, 'A time-varying ARMAX speech analysis method based on the glottal source model', The Journal of the Acoustical Society of America, vol. 100, no. 4_Supplement, pp. 2602-2602.
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Human speech production is usually modeled by an AR process with an impulse or white Gauss process input, such as in LPC analysis. But it is well known that a vocal tract feature provides an antiformant in addition to a formant frequency, and a voiced source of human speech contains a glottal source as well as noise characteristics. In order to represent speech production efficiently, a time-varying ARMAX (ARMA with eXogeneous input) model with a glottal source model is introduced. This model provides two MA processes, one for the white Gauss input and the other for the exogeneous input, which is generated by the glottal source model. A new speech analysis method is proposed that is based on the speech production model to extract speech characteristics accurately. In the proposed method, the Rosenberg–Klatt (RK) model [Klatt et al., J. Acoust. Soc. Am. 87, 820–857 (1990)] is adopted to generate a glottal wave. The glottal source and ARMAX parameters are estimated pitch synchronously and simultaneously, so as to optimize error criterion jointly by using an adaptive MIS method [Miyanaga et al., IEEE Trans. Acoust. Speech Signal Process. ASSP-34, 423–433] in ARMAX identification. Experiments have already been conducted using synthetic speech, which is generated by an ARMAX process with the RK model glottal source and a white Gauss input. The experimental result shows that the proposed method makes it possible to estimate accurate vocal tract and voice source characteristics (such as open quotient) from the speech signal.
Gambino, PMB & Burnett, IS 1996, 'Low delay pitch detection using dynamic-programming/Viterbi techniques', Proceedings of the International Symposium on Signal Processing and its Applications, ISSPA, vol. 1, pp. 77-80.
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An algorithm for the detection of the Fundamental Pitch Period (F 0) at low delay, utilizing Dynamic Programming (DP) Techniques and those of the Viterbi Algorithm (VA) is presented. The algorithm results in a low delay, accurate pitch detector which is vital for low rate speech coders, such as those utilizing Prototype Waveform Interpolation (PWI) techniques. Current methods, based on autocorrelation incur a significant look-ahead delay and are therefore considered unsuitable for use in such speech coders. The algorithm described uses improved, non-linear Pitch Detection, with a substantial extension of a Viterbi-type tracking algorithm to maintain a smooth pitch track.
Glover, BM, Ishizuka, Y, Jeyakumar, V & Tuan, HD 1996, 'Complete Characterizations of Global Optimality for Problems Involving the Pointwise Minimum of Sublinear Functions', SIAM Journal on Optimization, vol. 6, no. 2, pp. 362-372.
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Necessary and sufficient global optimality conditions are presented for certain nonconvex minimization problems subject to inequality constraints that are expressed as the pointwise minimum of sublinear (MSL) functions. A generalized Farkas lemma for ine
Guan, L 1996, 'Adaptive scaled mean square error filtering by neural networks', Journal of Electronic Imaging, vol. 5, no. 4, pp. 460-460.
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Gurung, SR, Stewart, RB, Loganathan, P & Gregg, PEH 1996, 'Aluminium-organic matter-fluoride interactions during soil development in oxidised mine waste', SOIL TECHNOLOGY, vol. 9, no. 4, pp. 273-279.
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A three year field trial assessing the suitability of mine waste rock as a surrogate subsoil with different depths of topsoil showed that pasture yield was significantly lower in the unmodified waste rock (UWR) treatments compared to waste rock modified with lime and potassic superphosphate (MWR) during the first two years but there was no difference in yield in the third year between the waste rock treatments. The reduced yield in UWR during the first two years was considered to be due to phytotoxic levels of aluminium (Al) in the UWR soil solution. Soil samples from the waste rock interface (A) and waste rock at depth ≤ 300 mm (B) collected at the end of the three year trial were analysed for different forms of soil Al, total soluble fluoride (F), dissolved organic carbon (DOC) and soil pH to determine whether organic matter and F leachate from the topsoil reduced Al toxicity at the waste rock interface (A) during soil development over 3 years. Results showed that after 3 years, 0.02 M CaCl2 extractable Al (Al(Ca)) and 1 M KCl extractable exchangeable + soluble Al (Al(K)) were effectively reduced in the MWR interface (A) by lime and fertiliser applications but they remained at very high phytotoxic levels (Al(Ca) = 17-21 μg g-1, Al(K)=261-339 μg g-1) in the UWR interface (A) irrespective of topsoil depth treatment. The corresponding organic bound Al (Al(OM)) ranged from 200 to 214 μg g-1 and DOC was in the range 169-203 μg g-1 in both UWR and MWR interfaces (A). These values were a significant two-fold higher than the values at depth ≤300 mm (B) which were considered to be the original levels of Al(OM) and DOC in UWR. The increase in Al(OM) and DOC by the third year is probably due to progressive leaching of organic ligands produced from the decomposition of organic matter in the topsoil subject to an annual rainfall of 2500 mm. This evidence for the reduction in Al toxicity by organic matter is further supported by significant dry root density (DRD) in the UWR ...
Hawryszkiewycz, IT 1996, 'Chapter 12 A CSCW design tool based on generic objects', Human Factors in Information Technology, vol. 12, no. C, pp. 177-194.
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Heiber, M, Marchese, A, Nguyen, T, Heng, HHQ, George, SR & O'Dowd, BF 1996, 'A Novel Human Gene Encoding a G-Protein-Coupled Receptor (GPR15) Is Located on Chromosome 3', Genomics, vol. 32, no. 3, pp. 462-465.
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We used sequence similarities among G-protein-coupled receptor genes to discover a novel receptor gene. Using primers based on conserved regions of the opioid-related receptors, we isolated a PCR product that was used to locate the full-length coding region of a novel human receptor gene, which we have named GPR15. A comparison of the amino acid sequence of the receptor encoded by GPR15 with other receptors revealed that it shared sequence identity with the angiotensin II AT1 and AT2 receptors, the interleukin 8b receptor, and the orphan receptors GPR1 and AGTL1. GPR15 was mapped to human chromosome 3q11.2-q13.1.
Hoffman, DM, Crampton, L, Sernia, C, Nguyen, TV & Ho, KK 1996, 'Short-term growth hormone (GH) treatment of GH-deficient adults increases body sodium and extracellular water, but not blood pressure.', J Clin Endocrinol Metab, vol. 81, no. 3, pp. 1123-1128.
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Initiation of GH treatment in adults is frequently complicated by the development of symptomatic fluid retention. To investigate the mechanism and extent of fluid retention that occurs with dosages of GH used in the treatment of GH-deficient adults, we conducted a double blind study in which seven GH-deficient patients (aged 24-74 yr) each received in random order daily sc injections of placebo, a physiological dose of GH (0.04 U/kg, low dose), and a supraphysiological dose of GH (0.08 U/kg, high dose) for 7 days, separated by 21-day washout periods. On the seventh day, measurements were made of serum insulin-like growth factor I, body weight, exchangeable sodium, plasma volume, angiotensinogen, PRA, aldosterone, atrial natriuretic peptide (ANP), and mean 24-h ambulatory heart rate and blood pressure. GH significantly increased mean insulin-like growth factor I levels from 105 +/- 11 to 304 +/- 45 micrograms/L during low dose treatment (P = 0.006) and 400 +/- 76 micrograms/L during high dose treatment (P = 0.004). High dose GH caused a 1.2 +/- 0.3 kg increase in body weight (P = 0.01) and a 193 +/- 65 mmol increase in exchangeable sodium (P = 0.008). Low dose GH had a lesser effect, with no significant increase in body weight, but an increase in exchangeable sodium of 113 +/- 37 mmol (P = 0.02). Plasma volume was not significantly affected by GH treatment. Mean supine angiotensinogen levels were significantly higher during both GH treatments compared to placebo (low dose, P = 0.017; high dose, P = 0.028) as were mean supine PRA levels (low dose, P = 0.0002; high dose, P = 0.0025). Supine angiotensin II, aldosterone, and ANP levels were not significantly affected by GH treatment. There was no significant change from placebo in any of the sodium-regulating hormones in the erect posture. The mean 24-h heart rate was significantly higher during low dose (82 +/- 2 beats/min; P = 0.0001) and high dose (88 +/- 3 beats/min; P = 0.0001) GH treatment than during ...
Howes, LG, Nguyen, T & Jackson, B 1996, 'SAFETY AND EFFICACY OF QUINAPRIL IN HYPERTENSIVE GERIATRIC PATIENTS', Journal of the American Geriatrics Society, vol. 44, no. 9, pp. 1135-1135.
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Imai, H, Miyanaga, Y & Tochinai, K 1996, 'Nonlinear spectrum estimation using a new neural network with a level estimator', The Journal of the Acoustical Society of America, vol. 100, no. 4_Supplement, pp. 2575-2575.
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This paper proposes a new nonlinear signal processing by using a three-layered network which is trained with self-organized clustering and supervised learning. The network consists of three layers, i.e., a self-organized layer, an evaluation layer, and an output layer. Since the evaluation layer is designed as a simple perceptron network and the output layer is designed as the fixed weight linear nodes, the training complexity is the same as the self-organized clustering and a simple perceptron network. In other words, quite high speed training can be realized. Generally speaking, since the data range usually used in signal processing is arbitrarily large, the network output should also cover this range. However, it may be difficult for only one node in the network to output these data. Instead of this technique, if this dynamic range is covered by using several nodes, the complexity of each node is reduced and the associated range is also quite limited. This results in a higher performance of this network than the conventional ones. As one of the objectives, this paper introduces the spectrum envelope estimation of speech waveforms. It is shown that accurate spectrum envelopes can be obtained.
Indraratna, B 1996, 'Utilization of lime, slag and fly ash for improvement of a colluvial soil in New South Wales, Australia', Geotechnical & Geological Engineering, vol. 14, no. 3, pp. 169-191.
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In Australia, colluvial soils form large terrains which are often subjected to considerable erosion and mass movement. This study presents a laboratory evaluation of the improvement effected by hydrated lime, milled blast furnace slag and fly ash on a fine grained (erosive) colluvial soil in New South Wales, Australia. Geotechnical tests were conducted to determine the compaction and consolidation characteristics and the compressive and shear strength properties of the blended and natural soil specimens. The effect of these additives on the Atterberg limits and pH levels is also investigated. As large amounts of fly ash and steel slag are produced in New South Wales, it is economically attractive to utilize these industrial by-products for ground improvement rather than employing conventional methods such as lime treatment. This study demonstrates that for the colluvial soil tested, milled slag is the most effective in terms of improving the internal friction angle of the treated soil, while lime is the most suitable for achieving the optimum compressive strength. Non-pozzolanic fly ash is found to be inappropriate as a soil improving agent. The cost of ground treatment using the various additives is also estimated and compared. © 1996 Chapman & Hall.
Indraratna, B & Lasek, G 1996, 'Laboratory evaluation of the load-deflection behaviour of clay beams reinforced with galvanised wire netting', Geotextiles and Geomembranes, vol. 14, no. 10, pp. 555-573.
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In Australia the utilisation of clay in the construction of landfill liners has recently come under criticism either due to the difficulty in reproducing the laboratory results on site, or because of the potential for cracking of the compacted liner after construction. Realising that clay is weak in tension and given the possibility of certain areas of the liner being subjected to flexure, a testing program was undertaken to determine the effects of placement (compaction), moisture content and internal reinforcement on the potential failure of clay liners. In particular, this paper discusses the load carrying capacity and deformation sustained by compacted clay beams in flexure, and the improvement gained through the introduction of an economical reinforcement in the form of galvanised steel wire netting. Results obtained by flexural bending tests are discussed in detail, and the extent of improvement provided by galvanised wire netting is evaluated. © 1997 Elsevier Science Ltd. All rights reserved.
INDRARATNA, B, DILEMA, ELG & VAFAI, F 1996, 'AN EXPERIMENTAL STUDY OF THE FILTRATION OF A LATERITIC CLAY SLURRY BY SAND FILTERS.', Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, vol. 119, no. 2, pp. 75-83.
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In many parts of the world, residual soils are used for the construction of impervious dam cores. This paper discusses the experimental details and design aspects of sand filters in the retention of a range of particle sizes in a clay slurry. Lateritic residual soil has a propensity to crack at relatively small tensile strains, if compacted either at low moisture content or at energy levels greater than the standard Proctor method. From laboratory results, a distinct demarcation between effective and noneffective filters was identified in considering the filter permeability and a specific particle size of the base soil (clay floes) retained by the filter. The equivalent of specific grain size <5g5, determined by hydrometer analysis was considered as the reference base particle, and the cation concentration of the base soil slurry was taken to represent the typical reservoir water chemistry of several dams in Thailand. The permeability of the filter was examined as a function of the sand grain sizes and the resulting empirical relationships are given in the paper. The performance of granular filters, including clogging behaviour, has'been studied according to~the particle sizes and uniformity coefficients of the filter media. The applicability of the proposed empirical relationships in practice is discussed in contrast to the conventional filter criteria.
Ishizuka, Y & Tuan, HD 1996, 'Directionally differentiable multiobjective optimization involving discrete inclusions', Journal of Optimization Theory and Applications, vol. 88, no. 3, pp. 585-616.
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Islam, R, Miyanaga, Y & Tochinai, K 1996, 'Parallelization of self-organized clustering system', Neural Network World, vol. 6, no. 6, pp. 921-936.
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A self-organized clustering system is extensively used for neural networks for the analysis and classification of speech and image information data. The speed of this process is improved by applying a new parallel algorithm essential for a real system and the recognition rates achieved by this new system is almost same as that of a sequential system using the conventional clustering system. However, the use of a multiple number of processors reduces the total processing time by a fraction.
Jacobs, M & Leydekkers, P 1996, 'Specification of synchronization in multimedia conferencing services using the TINA lifecycle model.', Distributed Syst. Eng., vol. 3, no. 3, pp. 185-196.
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Multimedia conferencing services have specific performance requirements with respect to the exchange of continuous media. One of these requirements is the synchronization within and between related streams. This article identifies synchronization requirements and solutions relevant for conferencing services that operate in an open distributed environment as defined in TINA-C. Based on the TINA service lifecycle, synchronization requirements and policies are described from different stakeholder perspectives. Synchronization is then specified in detail using the TINA information, computational and engineering languages. Finally, a description of the implementation of synchronization for a multimedia conferencing service is provided using a DPE platform. The synchronization object is proposed as an additional component available for the DPE that needs to deal with real-time audio-visual streams.
Johnson, AG, Nguyen, TV & Day, RO 1996, 'Evaluation of the Takeda TM-2420 in the elderly.', J Hum Hypertens, vol. 10, no. 1, pp. 61-61.
Jones, G, White, C, Nguyen, T, Sambrook, PN, Kelly, PJ & Eisman, JA 1996, 'Prevalent vertebral deformities: Relationship to bone mineral density and spinal osteophytosis in elderly men and women', Osteoporosis International, vol. 6, no. 3, pp. 233-239.
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Keen, RW, Nguyen, T, Sobnack, R, Perry, LA, Thompson, PW & Spector, TD 1996, 'Can biochemical markers predict bone loss at the hip and spine?: A 4-year prospective study of 141 early postmenopausal women', Osteoporosis International, vol. 6, no. 5, pp. 399-406.
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Kolakowski, LF, Jung, BP, Nguyen, T, Johnson, MP, Lynch, KR, Cheng, R, Heng, HHQ, George, SR & O'Dowd, BF 1996, 'Characterization of a human gene related to genes encoding somatostatin receptors', FEBS Letters, vol. 398, no. 2-3, pp. 253-258.
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We report the identification of a gene, named SLC‐11, encoding a novel G protein‐coupled receptor (GPCR). A customized search procedure of a database of expressed sequence tags (dbEST) retrieved a human cDNA sequence that partially encoded a GPCR. A genomic DNA fragment identical to the cDNA was obtained and used to screen a library to isolate the full‐length coding region of the gene. This gene was intronless in its open reading frame, and encoded a receptor of 402 amino acids, and shared −40% amino acid identity in the transmembrane (TM) regions to the five known human somatostatin receptors. Northern blot analysis revealed that SLC‐1 is expressed in human brain regions, including the forebrain and hypothalamus. Expression in the rat was highest in brain, followed by heart, kidney, and ovary. Expression of SLC‐1 in COS‐7 cells failed to show specific binding to radiolabelled Tyr1‐somatostatin‐14, naloxone, bremazocine, 1,3‐di(2‐tolyl)‐guanidine (DTG), or haloperidol. A repeat polymorphism of the form (CA)n was discovered in the 5′‐untranslated region (UTR) of the gene and SLC‐1 was mapped to chromosome 22, q13.3.
Kondo, M, Miyanaga, Y & Tochinai, K 1996, 'Dynamic network for identification of character locations using self‐organized clustering', Electronics and Communications in Japan (Part III: Fundamental Electronic Science), vol. 79, no. 7, pp. 11-21.
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AbstractThis paper proposes a new network that evaluates the locations of targets, i.e., target characters, and recognizes them in an image mixed with other objects, i.e., noncharacters. This network consists of a self‐organized clustering layer, a simple perceptron layer, and a controller. The purpose of the self‐organized clustering is to evaluate the stochastic characteristics of an input data set; the self‐organization is executed by calculating the distance between stochastic characteristics in this layer and the stochastic characteristics of an input vector. The simple perceptron layer determines the location of a target character and simultaneously recognizes its character by linearly dividing all outputs given from the self‐organized clustering layer. In the proposed system, the location identification and its recognition of a target character can be adaptively performed by using two small different compensative networks. The location identification and its recognition of real target characters, which are obtained in printed boards, are also shown in this paper.
Kovoor, P, Eipper, VE, Dewsnap, BI, McKinley, S, Nguyen, HT, Uther, JB & Ross, DL 1996, 'The effect of differing frequencies on lesion size during radiofrequency ablation', CIRCULATION, vol. 94, no. 8, pp. 3953-3953.
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NA
Lam, S, Shen, Y, Nguyen, T, Messier, TL, Brann, M, Comings, D, George, SR & O'Dowd, BF 1996, 'A Serotonin Receptor Gene (5HT1A) Variant Found in a Tourette's Syndrome Patient', Biochemical and Biophysical Research Communications, vol. 219, no. 3, pp. 853-858.
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Serotonergic pathway disturbances have been implicated in neuropsychiatric disorders such as Tourette's syndrome (TS), substance abuse, and depression. In order to search for the presence of an association between these neuropsychiatric disorders and particular serotonin receptors isolated from these patients, we have started to analyze the structure of these receptor genes. We now report that a missense nucleotide change in the 5HT1A receptor gene produces a variant form of the 5HT1A receptor (Arg219 to Leu) identified in DNA extracted from a TS patient. Also, in several DNA samples examined, both in controls and in the patients, we found a second missense nucleotide change which resulted in an amino acid change (Asn417 to Lys) located in the carboxyl tail of the receptor. Several other polymorphic changes have been reported previously in the human 5HT1A receptor and we have also confirmed these findings in our samples.
Lee, S, Vigneswaran, S & Bajracharya, K 1996, 'Phosphorus transport in saturated slag columns: Experiments and mathematical models', Water Science and Technology, vol. 34, no. 1-2, pp. 153-160.
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Excessive phosphorus (P as orthophosphate) is one of the major pollutants in natural water that are responsible for algal blooms and eutrophication. P removal by slag is an attractive solution if the P sorption capacity of slag is significant. To design an efficient land treatment facility, basic information on the behaviour of P in the media-water environment is required. In this study, detailed column experiments were conducted to study the P transport under dynamic condition, and mathematical models were developed to describe this process. The column experiments conducted with dust and cake waste products (slag) from a steel industry as adsorbing media indicated that they had higher sorption capacity of P than that of a sandy loam soil from North Sydney, Australia. P transport in the dust and cake columns exhibited characteristic S-shaped or curvilinear breakthrough curves. The simulated results from a dynamic physical non-equilibrium sorption model (DPNSM) and Freundlich isotherm constants satisfactorily matched the corresponding experimental breakthrough data. The mobility of P is restricted by the adsorbents and it is proportional to the sorption capacity of them.
Li, J & Yu, Y 1996, 'Studies on the approximation capability of the second-order neural network', Kongzhi Lilun Yu Yingyong/Control Theory and Applications, vol. 13, no. 4.
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The approximation capability of the second-order neural network is investigated in this paper and the following results have been obtained: 1)It has been proved that the second-order neural network can approximate any continuous function with any degree of accuracy; 2) the BP algorithm for second-order neural network and the simulated results are given in this paper. The simulated experiments show that when the number of hidden neurons in the second-order neural network is equal to the first-order one's, the error of the second-order neural network decreases faster than the first-order one's; when the accuracies of both of the second-order and first-order neural networks are equal, the number of hidden neurons in the second-order is far smaller than the first-order one's.
Li, JY & Chow, TWS 1996, 'Functional Approximation of Higher-Order Neural Networks', Journal of Intelligent Systems, vol. 6, no. 3-4, pp. 239-260.
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Li, Y, Miyanaga, Y & Tochinai, K 1996, 'Memorizing and regenerating spatiotemporal patterns with a structured recurrent neural network', Electronics and Communications in Japan (Part III: Fundamental Electronic Science), vol. 79, no. 8, pp. 65-73.
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AbstractA local connected recurrent neural network with the ability to memorize and regenerate some nonlinear complex dynamics is proposed in this paper and a new learning algorithm for this network is also developed. the network, constructed of adaptive oscillating modules, is easily applied to the realization of nonlinear dynamics. the module consists of two simple neuron nodes with recurrent connections. the new learning algorithm can independently train each module with suitable speed for given input data. the network size is also adaptively determined during the learning process. This network also has a suitable structure of a parallel VLSI system. Finally, some simulation results are given to verify the effectiveness on the proposed network structure and the learning algorithm.
Lippman, A & Kermode, R 1996, 'Media Banks: Entertainment and the Internet', IBM Systems Journal, vol. 35, no. 3.4, pp. 272-291.
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Liu, ZM, Mohan, AS & Aubrey, TA 1996, 'Em scattering using nonuniform mesh fdtd, pml and mur's abc', Electromagnetics, vol. 16, no. 4, pp. 341-358.
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In this paper, techniques are presented to extend FDTD, PML and Mur's second order ABC to the non-uniform mesh case for scattering problems from a consideration of improving the efficiency of computer codes to run on parallel computers. An alternative method to obtain the space derivatives in non-uniform mesh FDTD and non-uniform mesh PML ABC is presented which provides a second order accuracy. Mur's second order ABC has also been extended to the non-uniform mesh case with a First order accuracy which is an improvement over an existing method. A method of extending the pure scattered-field formulation to the PML medium is described. The electric fields inside a single layer dielectric sphere as well as a three layer dielectric sphere illuminated by a sinusoidal uniform plane wave have been computed which compare well with the results from an exact formulation. © 1996 Taylor & Francis.
Liu, ZM, Mohan, AS & Aubrey, TA 1996, 'EM Scattering Using Nonuniform Mesh FDTD, PML and Mur's ABC', Electromagnetics, vol. 16, no. 4, pp. 341-358.
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In this paper, techniques are presented to extend FDTD, PML and Murs second order ABC to the non-uniform mesh case for scattering problems from a consideration of improving the efficiency of computer codes to run on parallel computers. An alternative met
Loganathan, P, Hedley, MJ, Gregg, PEH & Currie, LD 1996, 'Effect of phosphate fertiliser type on the accumulation and plant availability of cadmium in grassland soils', NUTRIENT CYCLING IN AGROECOSYSTEMS, vol. 46, no. 3, pp. 169-178.
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Cadmium (Cd), a potentially toxic heavy metal for humans and animals, accumulates in the liver and kidneys of older animals grazing New Zealand and Australian pastoral soils. Phosphorus (P) fertiliser is the major input of Cd into these farming systems. A study was conducted to evaluate the effects, over 10 years, of annual application (30 kg P ha-1 yr-1) of four forms of P fertilisers having different solubilities and Cd contents [41, 32, 10 and 5 μg Cd g-1 for North Carolina phosphate rock (NCPR), single superphosphate (SSP), diammonium phosphate (DAP) made from low Cd phosphate rocks and Jordan phosphate rock (JPR) respectively] on soil and herbage Cd concentrations. Ten years of fertiliser application caused a marked increase in surface soil Cd concentrations. Total soil Cd was significantly higher in SSP and NCPR treatments compared to control (no P fertiliser), JPR and DAP treatments in the 0-30 and 30-75 mm soil depths. Plant-available Cd (0.01 M CaCl2 extractable Cd) was higher in SSP treatments than in control and other fertiliser treatments. Chemical analysis of herbage samples showed that there was no significant difference in Cd concentration in pasture grasses between treatments in the second year of the trial but in the eighth and tenth year, plots fertilised with SSP and NCPR had significantly higher Cd in pasture grasses in most of the seasonal cuts compared to control, JPR and DAP. Cadmium recovery by both grasses and clover was less than 5% of Cd applied in fertiliser. Clover Cd concentration and yield were much lower than those for grass and therefore its contribution to pasture Cd uptake was very low (< 7%). A strong seasonal effect on grass Cd concentration, which is inversely related to pasture growth rate, was observed in all three sampling years - Cd concentration was highest during autumn and lowest in spring. Total Cd contents of the fertilisers and their rate of dissolution rather than soil pH [pH (H2O) at 30-75 mm depth of 5.39, 5.20, ...
Lui, AK & Bone, D 1996, 'Graphical raster based data editors', AUSTRALIAN COMPUTER SCIENCE COMMUNICATIONS, vol. 18, pp. 592-601.
Manoharan, V, Loganathan, P, Parfitt, RL & Tillman, RW 1996, 'Changes in soil solution composition and aluminium speciation under legume-based pastures in response to long-term phosphate fertiliser applications', AUSTRALIAN JOURNAL OF SOIL RESEARCH, vol. 34, no. 6, pp. 985-998.
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This study describes some of the effects of 8 years of annual application of 6 types of phosphatic fertilisers on the chemical composition and aluminium (Al) speciation in soil solution extracted from a soil under pasture. Soil samples at 2 depths, 0-30 and 30-75 mm, were collected at the end of 8 years. Soil solutions were extracted by centrifuging at 12 000 RCF and analysed for Al, Na, K, Ca, Mg, F, NO3, Cl, and SO4, as well as pH and ionic strength. Soil and soil solution pH were significantly increased at both depths by application of North Carolina phosphate rock (NCPR) compared with the control. In contrast, diammonium phosphate (DAP) significantly decreased the soil and solution pH. Single superphosphate (SSP) did not have any significant effect on soil or solution pH compared with the untreated control. The surface soil (0-30 mm) solution pH was on average 0.6 of a unit higher than the subsurface soil (30-75 mm) solution pH. Total monomeric Al concentration [Al], measured by the pyrocatecol violet (PCV; 4 min) method, ranged from 1.5 to 4.8 μM in the surface soil and 2.5 to 12.2 μM in the subsurface soil. The DAP and higher rates of SSP application resulted in a large increase in total and inorganic monomeric [Al] in the soil solution extracted from the subsurface soil. Total soluble [F] ranged from 2.7 to 23.5 μM and 3.2 to 25.6 μM in the surface and subsurface soils, respectively, and was significantly increased by the application of NCPR and by higher rates of SSP. The predominant forms of inorganic monomeric Al present in the soil solution were estimated to be the non-phytotoxic Al-F complexes, AIF2+, and AIF2/+. There was a marked decrease in toxic Al species (Al3+, Al(OH)2+, Al(OH)2/+) in soil solution following NCPR and SSP application. This was due primarily to complexation of Al with F derived from these fertilisers forming non-toxic Al-F complexes. The results suggest that the long-term application of reactive phosphate rock such as NCPR may con...
Manoharan, V, Loganathan, P, Tillman, RW & Parfitt, RL 1996, 'Assessing aluminum phytotoxicity in long-term phosphate fertilized pasture soils', COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, vol. 27, no. 5-8, pp. 1731-1748.
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Miyanaga, Y & Tochinai, K 1996, 'High‐speed and high‐accuracy learning using a self‐organization network and a supervised network', Electronics and Communications in Japan (Part III: Fundamental Electronic Science), vol. 79, no. 7, pp. 41-50.
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AbstractThis paper introduces a feedforward network with a new learning algorithm into which both a self‐organized mechanism and a supervised training mechanism are implemented. In particular, from some experiments, it is seen that this network can realize sophisticated signal processing and analysis data with high‐speed training ability. the network is divided into two layers, that is, a self‐organized layer and a supervised layer. However, in the self‐organized layer, the training data of the network also are used for realizing high precision. In addition, the supervised layer also is trained in order to realize quite high accuracy for data recognition. In other words, the training data are used for both layers. Accordingly, the total precision of the network is improved greatly. In addition, the high‐speed organization and the parallel processing which are embedded in the original self‐organization also are realized in the new network.In this paper, some comparisons in which conventional neural networks, i.e., multilayer perceptron and self‐organization models, are used also are shown. In particular, as a new application of speech ARMA modelling, a new spectrum envelope estimation is explained by using this network.
Nakagaki, A, Shibata, K, Miyanaga, Y & Tochinai, K 1996, 'Adaptive spectrum estimation considering the time variation in analysis intervals', Electronics and Communications in Japan (Part III: Fundamental Electronic Science), vol. 79, no. 12, pp. 38-47.
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AbstractIn spectrum estimation of nonstationnary signals, the modeling of time‐varying characteristics and the parameter estimation of the model are important. Several adaptive estimation methods such as the recursive least‐squares (RLS) method are often used for parameter estimation of time‐varying models. However, the RLS method becomes less efficient for rapidly time‐varying models because this method assumes short‐time stationarity. This paper proposes an adaptive estimation method of time‐varying parameters modeled as linear combinations of a set of basis functions. In this method, linear or exponential time functions. In this method, linear or exponential time functions are employed as basis functions. This algorithm is relaized by the RLS algorithm with a rectangular window and a procedure that shifts basis functions. In some experiments, the performance of the proposed method is compared with that of the conventional method with short‐time stationarity assumed.
Ngo, HH & Vigneswaran, S 1996, 'Application of downflow floating medium flocculator/prefilter (DFF) - coarse sand filter (CSF) in nutrient removal', Water Science and Technology, vol. 33, no. 8, pp. 63-70.
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In this study, the applicability and the advantages of the downflow floating medium filter (DFF) in wastewater treatment were examined. The experimental results indicated that the DFF with in-line flocculation addition is a good pretreatment unit to reduce phosphorus load (up to 80-89% removal). The DFF also resulted in uniform filterable-flocs of 32-42 µm throughout the filter run. Thus it can also successfully be used as a flocculator. The backwashing of floating medium was achieved with a small quantity of water and at low backwash velocity. The introduction of floating medium filter bed on top of a coarse sand filter unit (CSF) increased the filter run time and removal efficiency (more than 87 and 94% of NH3-N and T-P removal respectively), particularly at a low filtration rate (5 m3/m2.h).
Ngo, HH & Vigneswaran, S 1996, 'Application of downflow floating medium flocculator/prefilter (DFF) - Coarse sand filter (CSF) in nutrient removal', WATER SCIENCE AND TECHNOLOGY, vol. 33, no. 8, pp. 63-70.
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In this study, the applicability and the advantages of the downflow floating medium filter (DFF) in wastewater treatment were examined. The experimental results indicated that the DFF with in-line fiocculation addition is a good pretreatment unit to reduce phosphorus load (up to 80â89% removal). The DFF also resulted in uniform filterable-floes of 32â42 (am throughout the filter run. Thus it can also successfully be used as a flocculator. The backwashing of floating medium was achieved with a small quantity of water and at low backwash velocity. The introduction of floating medium filter bed on top of a coarse sand filter unit (CSF) increased the filter run time and removal efficiency (more than 87 and 94% of NH3-N and T-P removal respectively), particularly at a low filtration rate (5 m3/m2.h).
Ngo, HH, Vigneswaran, S & Jegatheesan, V 1996, 'Mathematical modelling of downflow floating medium filter (DFF) with in-line flocculation arrangement', WATER SCIENCE AND TECHNOLOGY, vol. 34, no. 3-4, pp. 355-362.
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A laboratory-scale set-up consisting of rapid mixing device and floating medium filter was used to study the use of a downflow floating medium filter (DFF) with an in-line flocculation arrangement as a static flocculator and a prefilter. The semi-empirical mathematical model formulated incorporates flocculation within the filter, particle/floc attachment onto the filter and the detachment of flocs from the medium. The mathematical model for filtration takes into account the expansion of the filter bed. The removal efficiency of DFF and headloss development were successfully simulated for different conditions of filtration velocity, filter depth and influent suspended solids (SS). The values of attachment coefficient ap and headloss coefficient were found to be independent of filtration velocity, filter depth and influent SS concentration.
Ngugyen, TV, Eisman, JA, Kelly, PJ & Sambroak, PN 1996, 'Risk Factors for Osteoporotic Fractures in Elderly Men', American Journal of Epidemiology, vol. 144, no. 3, pp. 255-263.
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Nguyen, HT, Luzio, SD, Dolben, J, West, J, Beck, L, Coates, PA & Owens, DR 1996, 'Dominant risk factors for retinopathy at clinical diagnosis in patients with type II diabetes mellitus', Journal of Diabetes and its Complications, vol. 10, no. 4, pp. 211-219.
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A study of 270 newly presenting, previously untreated, type II diabetic patents revealed that 38 patients (14%) had already developed diabetic retinopathy (DR). Among this group, 26 patients had lesions of background diabetic retinopathy and 12 patients
Nguyen, TV, Morrison, NA, Sambrook, PN, Kelly, PJ & Eisman, JA 1996, 'Vitamin D receptor gene and osteoporosis.', J Clin Endocrinol Metab, vol. 81, no. 4, pp. 1674-1675.
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O'Dowd, BF, Nguyen, T, Lynch, KR, Kolakowski, LF, Thompson, M, Cheng, R, Marchese, A, Ng, G, Heng, HHQ & George, SR 1996, 'A novel gene codes for a putative G protein‐coupled receptor with an abundant expression in brain', FEBS Letters, vol. 394, no. 3, pp. 325-329.
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Following the cloning of the dopamine receptors we continued a search of the human genome for related genes. We searched an EST data base and discovered cDNA fragments encoding novel G protein‐coupled receptor genes. The available GenBank sequence of one of these EST fragments showed that it encoded a receptor with closest similarity to the D2 dopamine and adrenergic receptors. This cDNA was used to isolate the gene (GPR19), and the encoded receptor also demonstrated similarity with the neuropeptide Y receptor. The gene was mapped to chromosome 12, in region p13.2–12.3. Northern blot analysis revealed expression of GPR19 in peripheral regions, and brain regions significantly overlapping with the D2 receptor gene expression. A sequence of the rat orthologue of GPR19 was obtained and in situ hybridization analysis demonstrated a very abundant expression in rat brain.
ONO, E, HOSOE, S, TUAN, HD & HAYASHI, Y 1996, 'NonlinearH∞Control of Active Suspension', Vehicle System Dynamics, vol. 25, no. sup1, pp. 489-501.
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Oppermann, I & Vucetic, BS 1996, 'Capacity of a coded direct sequence spread spectrum system over fading satellite channels using an adaptive LMS-MMSE receiver', IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol. E79-A, no. 12, pp. 2043-2049.
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This paper examines the performance of a direct sequence, spread spectrum (DSSS) multiple access (MA) system used over two typical, frequency-selective, fading satellite channels. In an attempt to increase the system efficiency, an adaptive receiver described by Rapajic and Vucetic [1] has been implemented. This system has been combined with soft-decision convolutional coding in order to improve the system performance under the fading conditions relative to the uncoded system and to allow as many simultaneous users as possible. Various code rates have been examined and the results are given. This paper specifically focuses on DSSS-MA systems with low spreading ratios. The satellite channels used in this paper were produced by models developed as a result of experimental measurements of fading satellite channels for rural and urban environments.
Perry, SW & Guan, L 1996, 'A Partitioned Modified Hopfield Neural Network Algorithm for Real-Time Image Restoration', Real-Time Imaging, vol. 2, no. 4, pp. 215-224.
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Pham, DH & Burnett, IS 1996, 'Quantisation techniques for Prototype Waveforms', ISSPA 96 - FOURTH INTERNATIONAL SYMPOSIUM ON SIGNAL PROCESSING AND ITS APPLICATIONS, PROCEEDINGS, VOLS 1 AND 2, vol. 1, pp. 53-56.
Pocock, NA, Noakes, KA, Howard, GM, Nguyen, TV, Kelly, PJ, Sambrook, PN, Eisman, JA & Freund, J 1996, 'Screening for osteoporosis: what is the role of heel ultrasound?', Medical Journal of Australia, vol. 164, no. 6, pp. 367-370.
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Pocock, NA, Noakes, KA, Howard, GM, Nguyen, TV, Kelly, PJ, Sambrook, PN, Eisman, JA & Freund, J 1996, 'Screening for osteoporosis: What is the role of heel ultrasound?', Maturitas, vol. 25, no. 1, pp. 82-82.
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Sawamura, S, Kanda, H, Miyanaga, Y & Tochinai, K 1996, 'Maximum likelihood estimation of multiple sources using a local optimization method', Electronics and Communications in Japan (Part III: Fundamental Electronic Science), vol. 79, no. 11, pp. 14-24.
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AbstractAn effective method for solving a nonlinear optimizing problem is proposed here. This method is based on the maximum likelihood estimation of multiple sources by passive sensor array. The method employs the local optimization using the gradient of nonlinear function. Also described is how to determine the effective initial values leading to the global minimum but not to the local minimum. The proposed method in this paper easily obtained the optimized estimate of the maximum likelihood in multiple sources. This estimation usually requires great processing time using conventional methods because of a heavy computing load. Some simulations show that the proposed method has the properties of both better accuracy and lower computing time than a conventional method.
Shimizu, J, Miyanaga, Y & Tochinai, K 1996, 'A cascade lattice IIR adaptive filter for total least squares problem', IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol. E79-A, no. 8, pp. 1151-1156.
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In many actual applications of the adaptive filtering, input signals as well as output signals often contain observation noises. Hence, it is necessary to develop an adaptive filtering algorithm to such an errors-in-variables (El V) model. One solution for identifying the EIV model is a total least squares (TLS) algorithm based on a singular value decomposition of an off-line processing. However, it has not been considered to identify the EIV IIR system using an adaptive TLS algorithm of which stability has been guaranteed during adaptation process. Hence we propose a normalized lattice IIR adaptive filtering algorithm for the TLS parameter estimation. We also show the effectiveness of the proposed algorithm under noisy circumstances through simulations.
Shimizu, J, Miyanaga, Y & Tochinai, K 1996, 'A cascade lattice IIR adaptive filter for total least squares problem', IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, vol. E79A, no. 8, pp. 1151-1156.
Shimizu, J, Miyanaga, Y & Tochinai, K 1996, 'Signal enhancement using a robust adaptive total least squares algorithm.', Journal of the Acoustical Society of Japan (E), vol. 17, no. 6, pp. 285-293.
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An adaptive enhancement algorithm of signal disturbed by the impulse noise and the white Gaussian noise is proposed in this paper. If the strong dependence between signal enhancement and needed-parameter estimation exists in an algorithm, it is difficult to reduce a large bias occurring in the first estimation. To weaken their relationship, it is considered to introduce a total least squares (TLS) algorithm which estimates model parameters directly from disturbed signals. However, the TLS estimation accuracy is dramatically deteriorated by the impulse noise, even if the TLS estimation accuracy is held to the non-Gaussian noise in some degree. Hence, we ensure the robustness of the algorithm by replacing a high amplitude signal with an estimated value based on a likelihood ratio test. Using these signals, we develop an algorithm based on the TLS and the EM algorithm for enhancing the disturbed signal. We also show the effectiveness of the proposed algorithm through computer simulations.
Shimizu, J, Miyanaga, Y & Tochinai, K 1996, 'Tracking capability and floating‐point error analysis in multirate complex recursive weighted least squares algorithm', Electronics and Communications in Japan (Part III: Fundamental Electronic Science), vol. 79, no. 3, pp. 11-22.
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AbstractThis paper presents an analysis of a multirate complex recursive weighted least squares (MC‐RLS) algorithm based on an analytic signal. Conventional adaptive filters for multiple sinusoid extraction have been based on lattice filter structures or gradient methods because of their low computational cost and/or low sensitivity to quantization errors. On the other hand, the RLS algorithm is easy to introduce assuming time‐variant quantities in the algorithm when sinusoid frequencies have the time‐varying property. However, the relationship between the tracking capability and the quantization error of the least‐squares (LS) algorithm in the transversal structure has not been reported. In addition, an improvement algorithm for these errors have not been reported. In this paper, we shall describe a new RLS algorithm in a transversal filter structure with a superior transient property, reduced sensitivity to quantization errors, and low computational cost. First, an analytic signal‐based autoregressive model is introduced and the MC‐RLS algorithm is shown. Then, using an excess mean‐square error of the MC‐RLS algorithm, the tracking capability shown to be unaffected by the analytic transform and the decimation. In addition, the floatingpoint error and the computational cost of the MC‐RLS algorithm are analyzed. It is shown that both floatingpoint error and computational cost are smaller than those of conventional RLS algorithms that use real signals.
Smith, CL & Voinov, A 1996, 'Resource management: Can it sustain pacific northwest fishery and forest systems?', Ecosystem Health, vol. 2, no. 2, pp. 156-158.
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The relative effectiveness of resource management regimes is widely discussed. Sustainability and ecosystem health are two dimensions upon which the effect of management is judged. Evaluating resource management requires long time spans. We look at the impact of management on fish and forest resources by taking a life cycle approach to the exploitation of natural capital. Russian ethnographer Gumilev (1990) describes the process of how human systems go through a set of phases that parallel the birth, growth, maturity, and death stages of the life cycle. The process of adaptive renewal proposed by Holling (1992), too, has life cycle characteristics. The primary variables used to represent the phases of the renewal cycle are the amount of capital that is accumulated and the connectedness in the system. We apply the renewal cycle to a fishery and forestry example in the U.S. Pacific Northwest to see how management regimes alter the capital stock of these systems. In these two examples, 90% of the natural capital is lost or projected to be lost over a century and a half of exploitation. The management regime in both cases evolves toward greater inflexibility. Based on these two examples, resource management does not seem to lead to sustainability or ecosystem health. © 1996 Blackwell Science, Inc.
Sreenivasan, SV, Waldron, KJ & Mukherjee, S 1996, 'Globally Optimal Force Allocation in Active Mechanisms With Four Frictional Contacts', Journal of Mechanical Design, vol. 118, no. 3, pp. 353-359.
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Mechanisms interacting with their environments that possess complete contact force controllability such as multifingered hands and walking vehicles are considered in this article. In these systems, the redundancy in actuation can be used to optimize the force distribution characteristics. The resulting optimization problems can be highly nonlinear. Here, the redundancy in actuation is characterized using geometric reasoning which leads to simplifications in the formulation of the optimization problems. Next, advanced polynomial continuation techniques are adapted to solve for the global optimum of an important nonlinear optimization problem for the case of four frictional contacts. The algorithms developed here are not suited for real-time implementation. However, these algorithms can be used in off-line force planning, and they can be used to develop look-up tables for certain applications. The outputs of these algorithms can also be used as a baseline to evaluate the effectiveness of sub-optimal schemes.
Stewart, MG 1996, 'Optimization of serviceability load combinations for structural steel beam design', Structural Safety, vol. 18, no. 2-3, pp. 225-238.
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In Australia, typical design load combinations for serviceability are ψsQ and G + ψsQ (D and D + L in the US) where G and Q are design dead and live loads, respectively, and ψs is a short-term live load factor. Code calibration is conducted herein for Australian and US serviceability load combinations, for structural steel beams in flexure. The effects that office, retail, domestic and car parking loads and tributary areas have on serviceability reliability is described. It was found that serviceability reliabilities for different floor uses vary considerably for Australian and US serviceability load combinations; whereas the differences between serviceability reliabilities for one year and duration of a single tenancy reference periods were not great. Short-term live load factors for most floor uses were adjusted (sometimes significantly) to ensure that serviceability reliabilities exceed the minimum target level of 1.65. Consequently, the present paper provides suggested values for short-term live load factors that may be used in Australian and possibly in US codes. Copyright © 1996 Elsevier Science Ltd.
Stewart, MG 1996, 'Serviceability Reliability Analysis of Reinforced Concrete Structures', Journal of Structural Engineering, vol. 122, no. 7, pp. 794-803.
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A probabilistic model is developed to estimate immediate, creep, and shrinkage deflections. Monte Carlo simulation is used to estimate deflections and probabilities of serviceability failure (lifetime and for each 8 yr tenancy) for reinforced concrete beams sized according to the span-to-depth ratio serviceability requirements of Australian, British, and American Concrete Structures Codes. Serviceability failure is denned to occur when a deflection exceeds an allowable deflection limit as a result of flexure. It was found that the span-to-depth ratio serviceability requirements of these codes produce significantly different serviceability reliabilities. This is probably a consequence of the fact that the serviceability specifications of these codes have not been subjected to code calibration. A code-calibration exercise considering load factors, loading combinations, and/or allowable deflection limits may minimize these variations in serviceability reliabilities.
Tuan, HD 1996, 'On solution sets of nonconvex Darboux problems and applications to optimal control with endpoint constraints', The Journal of the Australian Mathematical Society. Series B. Applied Mathematics, vol. 37, no. 3, pp. 354-391.
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AbstractWe prove a continuous version of a relaxation theorem for the nonconvex Darboux problem xlt ε F(t, τ, x, xt, xτ). This result allows us to use Warga's open mapping theorem for deriving necessary conditions in the form of a maximum principle for optimization problems with endpoint constraints. Neither constraint qualification nor regularity assumption is supposed.
Tuan, HD & Hosoe, S 1996, 'Comments on consistency of quadratic forms', IEEE Transactions on Automatic Control, vol. 41, no. 8, pp. 1215-1216.
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Tuan, HD & Hosoe, S 1996, 'On linearization technique in robust nonlinear ∞ control', Systems & Control Letters, vol. 27, no. 1, pp. 21-27.
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Vigneswaran, S, Boonthanon, S & Prasanthi, H 1996, 'Filter backwash water recycling using crossflow microfiltration', Desalination, vol. 106, no. 1-3, pp. 31-38.
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Experiments were carried out using crossflow microfiltration (CFMF) for treating filter backwash water from a water treatment plant, It was found that CFMF with backflush is technically feasible and highly efficient. The condition of the backflush freque
Vigneswaran, S, Prasanthi, H & Dharmappa, HB 1996, 'Implications of particle size to transient stage of deep bed filtration', Korean Journal of Chemical Engineering, vol. 13, no. 6, pp. 565-572.
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This study was aimed at investigating the effect of particle size, mostly in the submicron range, on break-through stage of filtration. Latex beads, with diameters ranging from 0.46- to 2.967-μm were filtered through filter grains of diameters 0.1-, 0.175- and 0.45-mm. Experimental conditions were chosen so as to obtain breakthrough curves. The experimental results showed that the initial efficiency follows the pattern reported by previous experimental and theoretical studies, i.e., lower efficiency for 0.825-μm particles which fall in the range of critical size. However, the particle removal during the transient stage increased with an increase in particle size for the range of sizes studied. This pattern is qualitatively confirmed by the theoretical predictions of Vigneswaran and Chang (1986) model. This study also provides experimental verification of the effect of the ratio of particle size and grain size at different stages of filtration.
Vinh, H, Wain, J, Vo, TN, Cao, NN, Mai, TC, Bethell, D, Nguyen, TT, Tu, SD, Nguyen, MD & White, NJ 1996, 'Two or three days of ofloxacin treatment for uncomplicated multidrug-resistant typhoid fever in children', Antimicrobial Agents and Chemotherapy, vol. 40, no. 4, pp. 958-961.
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An open randomized comparison of 2 days (Ofx2) versus 3 days (Ofx3) of oral ofloxacin treatment (15 mg/kg/day) was conducted with Vietnamese children between 1 and 15 years of age with suspected typhoid fever. Of 108 children enrolled, 100 were blood culture positive for Salmonella typhi, and 86% of the isolates were multidrug resistant. There were no significant adverse effects. The therapeutic responses were similar in both groups, with mean (+/- standard deviation) fever clearances of 107 +/- 60 h in the Ofx3 group and 100 +/- 64 h in the Ofx2 group (P > 0.2). There were six 'clinical' failures in the Ofx2 group and two clinical failures in the Ofx3 group (P > 0.2), in which fever and symptoms persisted for more than 1 week after the start of treatment, but only one of these was culture positive (Ofx3). There was one suspected relapse, and one carrier was identified. Short courses of ofloxacin are simple, inexpensive, safe, and effective for the treatment of uncomplicated multidrug-resistant typhoid fever.
Waldron, KJ & Sreenivasan, SV 1996, 'A Study of the Solvability of the Position Problem for Multi-Circuit Mechanisms by Way of Example of the Double Butterfly Linkage', Journal of Mechanical Design, vol. 118, no. 3, pp. 390-395.
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It is frequently forgotten that the common methods of position analysis of planar linkages, which are based on dyadic decomposition, are not general. This is true regardless of whether a graphical or analytical approach is used. It is demonstrated in this paper that relatively simple linkages can give rise to problems that cannot be addressed by dyadic decomposition methods, and that solution of these problems can be far more complex.
Xu, G, Wang, N & Wang, J 1996, 'Determination of particle size distribution and mass concentration from the forward light flux scattered within two solid angles', Zhongguo Jiguang/Chinese Journal of Lasers, vol. 23, no. 5, pp. 432-436.
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Based on Fraunhofer diffraction theory a method was proposed to determine the size distribution as well as the absolute mass concentration of solid particles from the forward light flux scattering within two solid angles. The results of theoretical analysis and numerical simulation were given and the feasibility of this method and the prospect of its application were also indicated.
Ying, M 1996, 'Initial and terminal semantics for glued theories in institutions', Ruan Jian Xue Bao/Journal of Software, vol. 7, no. 6, pp. 360-363.
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In this paper, the correspondence among initial (terminal) semantics of glued theories and factor theories in institutions is clarified under certain intuitive conditions.
Ying, MS 1996, 'An open logic system admitting modification of inference rules', CHINESE SCIENCE BULLETIN, vol. 41, no. 13, pp. 1069-1071.
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Ying, MS 1996, 'When is the ideal completion of abstract basis algebraic', THEORETICAL COMPUTER SCIENCE, vol. 159, no. 2, pp. 355-356.
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The concepts of abstract basis and its ideal completion play an important role in domain theory because the category of bases (and approximable relations) is equivalent to the category of continuous domains (and continuous mappings) (cf. [1, Theorem 2.2.
Zhou, JL, Fileman, TW, Evans, S, Donkin, P, Mantoura, RFC & Rowland, SJ 1996, 'Seasonal distribution of dissolved pesticides and polynuclear aromatic hydrocarbons in the Humber Estuary and Humber coastal zone', Marine Pollution Bulletin, vol. 32, no. 8-9, pp. 599-608.
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Adil, MA, Sharma, D & Parkin, J 1970, 'Electricity sector decision making and performance: A case study in Pakistan', WATER & ENERGY 2001 - NEEDS, DEVELOPMENT, UTILISATION, International Research and Development Conference on Water and Energy 2001, A A BALKEMA, NEW DELHI, INDIA, pp. 389-394.
Alkussayer, HM, Zheng, FC, Guo, YJ & Barton, SK 1970, 'Time diversity decorrelator (TDD); a near-far resistant detector for asynchronous CDMA system', IEEE Vehicular Technology Conference, pp. 564-568.
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In this paper a near-far resistance detector for asynchronous Code-Division Multiple-Access (CDMA) systems operating in Additive White Gaussian Noise (AWGN) channels is presented. The multi-user interference caused by K users transmitting simultaneously, each with a specific signature sequence, is completely removed at the receiver. The complexity of this detector grows only linearly with the number of users, as compared to the optimum multi-user detector which requires exponential complexity in the number of users. A modified algorithm based on time diversity is described. It performs detection on a bit-by-bit basis and overcomes the complexity of using a sequence detector. The performance of this detector is shown to be superior to that of the conventional receiver.
Ball, JE & Luk, KC 1970, 'Determination of the rainfall distribution over a catchment using hydroinformatic tools', HYDROINFORMATICS '96, VOLS 1 AND 2, 2nd International Conference on Hydroinformatics (Hydroinformatics 96), A A BALKEMA, ZURICH, SWITZERLAND, pp. 369-376.
Baweja, D, Roper, H & Sirivivatnanon, V 1970, 'Corrosion of steel in marine concrete: Long-term half-cell potential and resistivity data', American Concrete Institute, ACI Special Publication, pp. 89-110.
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This paper presents some results from a major research project carried out on corrosion of steel reinforcement in concrete. The performance of a range of Portland and blended cement concretes containing fly ash and blast furnace slag exposed to simulated marine conditions was evaluated over a period of six years. A large amount of data relating to corrosion of embedded steel in concrete was obtained in this project. Long-term half cell potential data on reinforcement within concrete slabs and resistivity data on the same concrete specimens has been considered in detail in this paper. Rates of corrosion of steel in concrete were also measured using potentiodynarnic anodic polarization procedures. Trends observed in the data were different for the portland and blended cement concretes investigated. It was found that concrete resistivity may influence the measured half cell potential of steel in concrete. This factor needs to be taken into account for half cell potential data interpretations.
Bone, D, Veldkamp, P & Horowitz, FG 1970, 'Wavelet Based Image Coding with Interscale Linear Prediction', Picture Coding Symposium, pp. 209-213.
Braun, RM, Horwitz, R & Kaplan, D 1970, 'Reform of the South African telecommunications sector - some ramifications thereof', IEEE AFRICON Conference, 1996 IEEE AFRICON / 4th AFRICON Conference in Africa - Electrical Energy Technology, Communication Systems, Human Resources, I E E E, STELLENBOSCH, SOUTH AFRICA, pp. 68-72.
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This paper describes the background to the present regulatory framework of the South African telecommunications sector. The paper considers the present infrastructure, its ownership and its capabilities. The paper then goes on to discuss the process followed in the creation of a new regulatory framework. It discusses the details of what is proposed, and the ramifications. The effect of technological advancement is put into the context of a new de-regulated market.
Brookes, W & Indulska, J 1970, 'Teaching internet literacy to a large and diverse audience', Proceedings of the second Australasian conference on Computer science education - ACSE '97, the second Australasian conference, ACM Press, pp. 7-15.
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© 1997 ACM. Very large and diverse audiences pose a variety of problems for lecturers and students alike [l]. This paper presents an approach used in the School of Information Technology at The University of Queensland to teach an Internet literacy course to a diverse student audience. The course provides an introduction to computer networks and teaches students from various university faculties how to effectively use a variety of Internet services. The subject integrates efforts on teaching Internet literacy at the university in order to minimise teaching effort and to maximise quality of teaching. The paper discusses the variety of means deployed in order to provide a flexible, self-directed learning environment for the course. This led to: The inclusion of QUIKF'ro!, a specially developed Computer Based Training package on Internet services and resources; providing easy access to learning materials from campus or from home; and using innovative assessment methods which aim at improving the process and quality of assessment. Assessment was carried out online and used anonymous assessment, peer assessment and criterion-referenced marking.
Burnett, IS & Parry, JJ 1970, 'On the effects of accent and language on low rate speech coders', International Conference on Spoken Language Processing, ICSLP, Proceedings, pp. 291-294.
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Telecommunications networks are exposed to a plethora of accents and languages. Fundamental to current and future systems are low rate speech coders. This paper examines the problems associated with speech coding of different languages and accents. Our investigations show that most low-rate (8 kb/s and below) speech coders show bias towards non-accented English. When the coders are used for heavily accented English or other languages, significant performance degradation is noted. This paper examines the reasons for such variations and some approaches for improving coder performance.
Carrie, J, Esselle, K, Roscoe, DJ, Ittipiboon, A, Sebak, A & Shafai, L 1970, 'A K-band circularly polarized cavity backed dielectric resonator', IEEE Antennas and Propagation Society International Symposium. 1996 Digest, IEEE Antennas and Propagation Society International Symposium. 1996 Digest, IEEE, pp. 734-737.
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Recent, research in circularly polarized dielectric resonator antennas (DRAs) has shown that a wide axial ratio bandwidth can be achieved from a single point fed DRA. It is the purpose of this paper to investigate the performance of the dielectric cross within a cavity structure. The optimization of the geometry and the effects on overall operation are discussed.
Center, J, Nguyen, T, Sambrook, P, Kelly, P & Eisman, J 1970, 'Hormonal factors in male osteoporosis.', JOURNAL OF BONE AND MINERAL RESEARCH, BLACKWELL SCIENCE INC, pp. S573-S573.
Cucchiara, R & Piccardi, M 1970, 'DARPA benchmark image processing on SIMD parallel machines', Proceedings of 1996 IEEE Second International Conference on Algorithms and Architectures for Parallel Processing, ICA/sup 3/PP '96, 1996 IEEE Second International Conference on Algorithms and Architectures for Parallel Processing, ICA/sup 3/PP '96, IEEE, SINGAPORE, SINGAPORE, pp. 171-178.
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Cucchiara, R & Piccardi, M 1970, 'Detection of luminosity profiles of elongated shapes', Proceedings of 3rd IEEE International Conference on Image Processing, 3rd IEEE International Conference on Image Processing, IEEE, LAUSANNE, SWITZERLAND, pp. 635-638.
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Cuthbert, J & Braun, RM 1970, 'Multi-h modulation indexes selection using the PBIL algorithm', Proceedings of IEEE. AFRICON '96, IEEE. AFRICON '96, IEEE, STELLENBOSCH, SOUTH AFRICA, pp. 1109-1114.
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Epaarachchi, D, Stewart, MG & Rosowsky, DV 1970, 'System risk for multi-storey reinforced concrete building construction', Probabilistic Mechanics and Structural and Geotechnical Reliability, Proceedings of the Specialty Conference, pp. 230-233.
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The paper develops a preliminary probabilistic model to estimate the probability of structural collapse during the construction of typical multi-storey reinforced concrete buildings. Results suggest that low concrete compressive strength is more detrimental to system risk than shortening the construction cycle by a few days.
Esselle, KP 1970, 'Circularly polarised low-profile rectangular dielectric-resonator antenna: FD-TD and experimental results', IEEE Antennas and Propagation Society International Symposium. 1996 Digest, IEEE Antennas and Propagation Society International Symposium. 1996 Digest, IEEE, BALTIMORE, MD, pp. 577-580.
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Esselle, KP 1970, 'Dielectric resonator antenna analysis and design using the FD-TD method', Annual Review of Progress in Applied Computational Electromagnetics, pp. 826-831.
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A technique, based on the Finite-Difference Time-Domain (FD-TD) method, is used for the analysis and design of aperture-coupled dielectric-resonator (DR) antennas. Computed far-field patterns are presented for a linearly polarised antenna, a circularly polarised antenna and a linearly polarised array. They compare well with measured patterns.
Fuente, MP, Guo, YJ & Barton, SK 1970, 'New scheme for direct sequence spread spectrum radio LANs', IEEE International Symposium on Spread Spectrum Techniques & Applications, pp. 1320-1324.
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A new direct sequence spread spectrum scheme for ISM band Radio Local Area Networks using BPSK modulation and matched filter receivers is presented. It employs an optimized 22-chip sequence whose two 11-chip segments are alternately used as spreading sequences for adjacent symbols. Owing to the low cross-correlation between the two 11-chip segments, the inter-symbol interference caused by long delays in multipath channels is significantly reduced. In the paper, a receiver structure using the optimized sequence and time diversity is described and simulation results are given. Compared with the schemes using the short 11-chip Barker code and long M-sequences, the new scheme offers superior system performance.
Hadgraft, R & Wigan, M 1970, 'Evaluating hypertext', 1996 IEEE International Conference on Multi Media Engineering Education. Conference Proceedings, 1996 IEEE International Conference on Multi Media Engineering Education. Conference Proceedings, IEEE, UNIV MELBOURNE, MELBOURNE, AUSTRALIA, pp. 403-408.
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Hadgraft, R & Wigan, M 1970, 'Insights from modelling user behaviour in a hypertext', 1996 IEEE International Conference on Multi Media Engineering Education. Conference Proceedings, 1996 IEEE International Conference on Multi Media Engineering Education. Conference Proceedings, IEEE, UNIV MELBOURNE, MELBOURNE, AUSTRALIA, pp. 419-424.
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Haley, RP, Ni, W & Adams, ED 1970, 'Melting curve of3He droplets in phase-separated3He-4He mixtures', Czechoslovak Journal of Physics, 21st International Conference on Low Temperature Physics (LT 21), Springer Science and Business Media LLC, CZECH REPUBLIC, PRAGUE, pp. 477-478.
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Harris, M, Kelly, PJ, Walsh, BR, Nguyen, TV, Howard, GM & Eisman, JA 1970, 'Relationship between bone thickness, true bone density, and ultrasonic velocity.', JOURNAL OF BONE AND MINERAL RESEARCH, BLACKWELL SCIENCE INC, pp. S623-S623.
Hayes, JG, Nguyen, TV, Kelly, PJ, Qi, JC, Morrison, NA, Pocock, NA, Sambrook, PN & Eisman, JA 1970, 'Heritability of hip geometry and association with the vitamin D receptor (VDR) gene alleles.', JOURNAL OF BONE AND MINERAL RESEARCH, BLACKWELL SCIENCE INC, pp. S488-S488.
Hoang, DB & James, MR 1970, 'AMI: A model of intelligence', Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Springer Berlin Heidelberg, pp. 181-192.
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© Springer-Verlag Berlin Heidelberg 1996. It is reasonable to say that so far neural networks have performed very well on many specific tasks of reasonable size, but their performance is far from satisfactory when applied to realistic but complex tasks such speech recognition and language processing. Yet the brain can perform these tasks efficiently and effortlessly (seemingly) using its optimized mechanisms. It is believed crucial to discover these mechanisms. In this paper, a neural network model of the isocortex as basic building block of intelligent systems is consolidated. The model incorporates mechanisms extracted from cortical circuit as suggested from the study of neuroanatomy. The learning rule compatible with what is known about synaptic adaptation in the neocortex is introduced. Simulations results, which verify the mathematical proof of the model stability and robustness, are presented.
Horita, E, Nishikawa, K & Miyanaga, Y 1970, 'A fast recursive least-squares with a weighting factor based an a 2-D NSHP AR model and its application to spectral estimation', 1996 IEEE Digital Signal Processing Workshop Proceedings, 1996 IEEE Digital Signal Processing Workshop Proceedings, IEEE, LOEN, NORWAY, pp. 339-342.
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Horowitz, FG, Bone, D & Veldkamp, P 1970, 'Karhunen-loeve based iterated function system encodings', International Picture Coding Symposium, pp. 409-413.
Horowitz, FG, Hornby, P, Bone, D & Craig, M 1970, 'Fast multidimensional interpolations', 26TH PROCEEDINGS OF THE APPLICATIONS OF COMPUTERS AND OPERATIONS RESEARCH IN THE MINERAL INDUSTRY, 26th International Symposium on the Application of Computers and Operations Research in the Mineral Industry (APCOM), SOC MIN ENGINEERS AIME, PENN STATE UNIV, UNIVERSITY PK, PA, pp. 53-56.
Howard, GM, Nguyen, TV, Harris, M, Kelly, PJ & Eisman, JA 1970, 'Heritability of calcaneal and digital ultrasound and bone mineral density in twins.', JOURNAL OF BONE AND MINERAL RESEARCH, BLACKWELL SCIENCE INC, pp. S617-S617.
Jordaan, GD, Du Plooy, CE & Braun, RM 1970, 'Clock recovery scheme for 7PRS signals', IEEE AFRICON Conference, pp. 397-401.
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Baseband PRS signals do not contain any spectral components at the symbol rate or submultiples thereof. For this reason difficulty is frequently experienced in synchronizing a PRS receiver with the data transmitter. This is a description of a novel synchronization scheme developed for such signals - using digital signal processing (DSP) techniques. A channel filter with a response derived from the raised cosine (RC) frequency response is used. This is followed by a limited amount of processing, resulting in a substantial signal at the required frequency.
Keshavarzy, A & Ball, JE 1970, 'Characteristics of turbulent shear stress applied to bed particles in an open channel flow', STOCHASTIC HYDRAULICS '96, 7th IAHR International Symposium on Stochastic Hydraulics, A A BALKEMA, MACKAY, AUSTRALIA, pp. 451-458.
Khor, EH, Rosowsky, DV & Stewart, MG 1970, 'Effect of concrete workmanship on strength reliability of R/C beams', Probabilistic Mechanics and Structural and Geotechnical Reliability, Proceedings of the Specialty Conference, pp. 238-241.
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A human reliability analysis (HRA) is performed which incorporates microtask models for human error during construction of a reinforced concrete beam. An existing model is extended to include a performance model for concrete workmanship. Consideration is given to the effect of human performance (error) on concrete mix quality, pouring activities, and curing. The model is calibrated using data collected from surveys of practicing engineers. The effect of human error in workmanship on the lifetime (strength) reliability of flexural beams is investigated.
Marjanovic, O & Cecez-Kecmanovic, D 1970, 'Collaborative distance learning', 1996 IEEE International Conference on Multi Media Engineering Education. Conference Proceedings, 1996 IEEE International Conference on Multi Media Engineering Education. Conference Proceedings, IEEE, UNIV MELBOURNE, MELBOURNE, AUSTRALIA, pp. 59-64.
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Miyanaga, Y, Motoyoshi, K & Tochinai, K 1970, 'Recognition of three dimensional objects using a directional coupled neural network', 1996 IEEE Digital Signal Processing Workshop Proceedings, 1996 IEEE Digital Signal Processing Workshop Proceedings, IEEE, LOEN, NORWAY, pp. 259-262.
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Nel, EJ & Braun, RM 1970, 'Development of a directional coupler to be used on the two-wire sections of dial-up telephone lines', IEEE AFRICON Conference, 1996 IEEE AFRICON / 4th AFRICON Conference in Africa - Electrical Energy Technology, Communication Systems, Human Resources, I E E E, STELLENBOSCH, SOUTH AFRICA, pp. 570-575.
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This project aims to develop a directional coupler for use on dial-up telephone lines. The need for such a coupler originated with the acceptance of the CCITT's (International Telegraph and Telephone Consultative Committee) V.32 bis recommendation regarding the operation of high-speed modems. This standard allows modems to communicate on the telephone network both simultaneously as well as within the same frequency band. The modems involved use a mechanism called echo cancellation to overcome this problem (with echo cancellation the modem subtracts that which it transmits from the signal on the line to get the signal it wishes to receive). However, a third party surveying the (two-wire sections of the) line is unable to interpret the signals on the line as there appears to be only one garbled signal. This paper develops the theoretical basis necessary for a directional coupler that will separate this garbled signal into its constituent signals and thus enable interpretation of such signals by a third party.
Ngo, HH, Vigneswaran, S & BenAim, R 1970, 'Effect of floc size on the applicability of direct filtration in water and tertiary wastewater treatment', 7TH WORLD FILTRATION CONGRESS, PROCEEDINGS, VOLS I AND II, 7th World Filtration Congress, HUNGARIAN CHEMICAL SOC, BUDAPEST, HUNGARY, pp. 157-161.
Nguyen, TV, Sambrook, PN, Center, JR & Eisman, JA 1970, 'Predictors of fractures in the forearm and proximal humerus.', JOURNAL OF BONE AND MINERAL RESEARCH, BLACKWELL SCIENCE INC, pp. M736-M736.
Ono, E, Hosoe, S, Tuan, HD & Doi, S 1970, 'Robust stabilization of vehicle dynamics by active front wheel steering control', Proceedings of the IEEE Conference on Decision and Control, 35th IEEE Conference on Decision and Control, I E E E, KOBE, JAPAN, pp. 1777-1782.
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A control strategy of the active front wheel steering system is presented to protect the vehicle from spin and to realize improved cornering performance. Vehicle spin behavior is analyzed using bifurcation theory. The saturation characteristics of rear tires are modeled by a linear function with uncertainty terms of a special structure. The vehicle unstability is caused by a saddle-node bifurcation and depends heavily on the rear tire side force saturation.
Oppermann, I & Vucetic, BS 1970, 'Coded direct sequence spread spectrum systems over satellite channels using an adaptive receiver', Proceedings of ISSSTA'95 International Symposium on Spread Spectrum Techniques and Applications, ISSSTA'95 International Symposium on Spread Spectrum Techniques and Applications, IEEE, MAINZ, GERMANY, pp. 940-944.
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Oppermann, I, Vucetic, BS & Talvitie, J 1970, 'Capacity of a low mobility spread spectrum system over a wireless local loop', Proceedings of GLOBECOM'96. 1996 IEEE Global Telecommunications Conference, GLOBECOM'96. 1996 IEEE Global Telecommunications Conference, IEEE, QUEEN ELIZABETH II CONFERENCE CTR, WESTMINSTER, LONDON, ENGLAND, pp. 1761-1765.
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Peng, M, Guo, YJ & Barton, SK 1970, 'One-shot linear decorrelating detector for asynchronous CDMA', Conference Record / IEEE Global Telecommunications Conference, pp. 1301-1305.
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A one-shot linear decorrelating detector(LDD) for the detection of asynchronous CDMA is presented. By treating every user as two independent users and using maximal ratio combining, a bit-by-bit detection is obtained. By applying a phase estimation algorithm on the output of the one-shot LDD, it is shown that the proposed detector can be used for the detection of asynchronous CDMA without the knowledge of carrier phase of any user. Simulation results show that the performance of the proposed detector approaches that of the optimum detector for single user transmission.
Perry, S & Guan, L 1970, 'Image Restoration using a Neural Network with an Adaptive Constraint Factor', 1996 Computational Engineering in Systems Applications Conference, Lille, France, pp. 854-859.
Perry, S & Guan, L 1970, 'Segmentation and Visualisation of 3D Underwater Ultrasonic Images', 1996 Australian Pattern Recognition Society Workshop, Sydney, NSW, Australia, pp. 69-74.
Purchase, H, Hussey, A, Brookes, W & Leadbetter, D 1970, 'Fostering interest in information technology', Proceedings of the second Australasian conference on Computer science education - ACSE '97, the second Australasian conference, ACM Press, pp. 126-134.
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© 1997 ACM. Fostering an interest in Information Technology (IT) in school students is important both for the IT industry and for universities: We therefore enthusiastically welcomed the opportunity to hold an Information Technology vacation school for year 12 students in April 1996. Initiated and sponsored by the Australian Computer Society and Rotary International, the school enabled 60 secondary students who were in the process of making decisions about tertiary study to spend three days participating in a variety of computer-related activities at The University of Queensland Department of Computer Science, and experiencing life as a university student. The students developed skills in programming in Smalltalk, and using information systems and Internet resources. In addition, they visited other departments on campus and companies in the city to see a variety of uses of IT. We hoped to give the students the opportunity to make an informed decision about their future careers. A follow-up survey in early 1997 revealed that 80% of the students felt that attendance at the school helped them with their post-school career decisions. This paper describes our experiences with running the school: The program, components, feedback, and future plans. It was a very rewarding and worthwhile experience: We hope that this paper will encourage other universities to attempt similar programs.
Rauch, F, Radermacher, A & Schonau, E 1970, 'Prediction of bone density from vitamin D receptor alleles', PAEDIATRIC OSTEOLOGY, 1st International Workshop on Paediatric Osteology, ELSEVIER SCIENCE PUBL B V, COLOGNE, GERMANY, pp. 59-65.
Sirivivatnanon, V, Marsh, P & Nelson, P 1970, 'Field performance of portland cement and fly ash concrete subjected to flowing seawater', American Concrete Institute, ACI Special Publication, pp. 463-479.
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The concrete lining the outfall canal of Munmorah Power Station, built by the Electricity Commission of New South Wales (now operating as Pacific Power) in the mid-1960s, has been subjected to flowing sea water for 30 years. Two type of concretes, a portland-cement concrete and a fly-ash concrete, were used for the construction of the canal. This presented an ideal opportunity for a comparison to be made of the performance of the two binders in concretes which were subjected to the same aggressive environment. Limited information was available on the concretes from trial mixture records. A recent field investigation revealed similar chloride ingress into the two concretes in the tidal zone. This was so despite the fact that the fly-ash concrete had a lower binder content than the portland-cement concrete. As such, a lower strength grade and hence a fly-ash concrete with higher water permeability can perform as well as a portland-cement concrete. In the dry area above the high tide mark, the carbonation depth of the fly-ash concrete was greater than the portland-cement concrete. No corrosion was found in any reinforcing steel as there were sufficient cover in both concretes to prevent the chloride ions or carbonation front reaching the steel. The effectiveness of a number of investigative techniques was evaluated during the investigation. It was found that the apparent chloride diffusion coefficients, determined from short-term immersion, the water permeability coefficients, and copper to copper sulfate half-cell potential measurements were poor indicators of the real long-term performance.
Talvitie, J, Hovinen, V, Hamalainen, M & Oppermann, I 1970, 'Wideband channel measurement and characterisation for wireless local loops', Proceedings of PIMRC '96 - 7th International Symposium on Personal, Indoor, and Mobile Communications, PIMRC '96 - 7th International Symposium on Personal, Indoor, and Mobile Communications, IEEE, TAIPEI, TAIWAN, pp. 5-9.
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van de Groenendaal, JG & Braun, RM 1970, 'Novel low cost direct sequence spread spectrum synchroniser', Canadian Conference on Electrical and Computer Engineering, 1996 Canadian Conference on Electrical and Computer Engineering - Glimpse into the 21st-Century, I E E E, UNIV CALGARY, CALGARY, CANADA, pp. 36-39.
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This paper presents a novel spread spectrum synchroniser that may be simpler and more cost effective than other synchronisation system. Acquisition and tracking is achieved using one network, and the decision as to whether the system is in lock only occurs once the two sequences are aligned. No intermediate decision is required on the state of synchronisation. This feature of the synchroniser makes it cost effective and easy to implement. Although the synchroniser is not suitable for low signal-to-noise applications, it does highlight that it is possible to simplify the overall synchronisation process, while still having the benefits of spread spectrum.
Wan, E & Bone, DJ 1970, 'A neural network approach to covariation model fitting and the interpolation of sparse earth-science data', The Australian Conference on Neural Networks.
Wang, JG, Mohan, AS & Aubrey, TA 1970, 'Angles-of-arrival of multipath signals in indoor environments', IEEE Vehicular Technology Conference, IEEE 46th Vehicular Technology Conference - Mobile Technology for the Human Race (VTC 96), I E E E, ATLANTA, GA, pp. 155-159.
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In this work, an attempt is made to estimate the (AOA) Angles-of-Arrival) of multipath signal propagation in both azimuth and elevation inside a classroom and a convention hall using partially smoothed MUSIC (Multiple Signal Classification) algorithm. The MDL (Minimum Descriptive Length) criterion is used to decide the number of significant multipath components. The algorithms used in obtaining AOA from measured data are validated by computer simulations. Measurement results indicate that for the same transmitter power, a small room has more significant multipath reflections than a big room and such multipath reflections decrease as the distance between the transmitter and a receiver increases.
Wang, NN & Xu, GD 1970, 'Optical on-line measurements of particulate mass concentration and particle size pollutant emission', Proceedings of the International Conference on Energy and Environment, ICEE, pp. 777-781.
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In this paper, an optical measuring technique which can be used in in-situ measurements and gives the full particle size information as well as the absolute mass concentration of pollutant emissions is presented, according to the light scattering theory. Based on the Fraunhofer diffraction theory, the information about the particle size can be obtained by measuring the forward light flux at two small solid angles, and the mass concentration from the extinction measurement. Theoretical calculations and computer simulation are made to verify the validity and applicability of the presented method. Results show that it can be used to monitor and supervise the pollutant emissions in different industrial processes.
Wong, EPK, Guan, L & Perry, SW 1970, '<title>Neural network implementation of the SMSE filter for imaging processing</title>', SPIE Proceedings, Electronic Imaging: Science & Technology, SPIE, SAN JOSE, CA, pp. 77-85.
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Woodward, G, Oppermann, I & Vucetic, BS 1970, 'Adaptive techniques for increased satellite cellular mobile system capacity', Proceedings of Vehicular Technology Conference - VTC, Vehicular Technology Conference - VTC, IEEE, ATLANTA, GA, pp. 1235-1239.
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Ying, MS & BouchonMeunier, B 1970, 'Quantifiers, modifiers and qualifiers in fuzzy logic', SOFT COMPUTING IN INTELLIGENT SYSTEMS AND INFORMATION PROCESSING, IEEE, Kenting, Taiwan, pp. 490-495.
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In this paper, we propose a formalization of fuzzy logic and obtain some interesting results on fuzzy quantifiers, modifiers and qualifiers in this setting.
Zowghi, D, Ghose, AK & Peppas, P 1970, 'A framework for reasoning about requirements evolution', Proceedings of the 4th Pacific Rim International Conference on Artificial Intelligence (PRICAI’96), Pacific Rim International Conference on Artificial Intelligence, Springer Berlin Heidelberg, Cairns, Australia, pp. 157-168.
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