Physical Sciences and Mathematics Commons^™

Katina On Right Path To Test Tracking Technology, Courtney Trenwith, K. Michael

Professor Katina Michael

No abstract provided.

Returns To Selecting Value Stocks In Australia – The Aby Filters, Bruce Vanstone, Tobias Hahn, Gavin Finnie

Bruce Vanstone

The development of the Financial Crisis throughout 2008 and into 2009 has caused many fund managers to question their Growth based investment models. Interest appears to be again rekindled in the traditional Value based models, where investment decisions are based on sound company fundamentals rather than abstract future growth expectations. This paper reviews a specific set of value based filters for selecting undervalued stocks which appeared in a series of papers published soon after the 2000 Dot-Com debacle. This paper documents the performance of these filters in the Australian stockmarket.

With Words That Last, Sean Nicholls, Leesha Mckenny, M.G. Michael, K. Michael

Professor Katina Michael

No abstract provided.

A Graph Theoretic Summation Of The Cubes Of The First N Integers, Joe Demaio, Andy Lightcap

Joe DeMaio

Counting Pattern-Avoiding Permutations, Lara Pudwell

Lara K. Pudwell

No abstract provided.

An Introduction To Enumeration Schemes, Lara Pudwell

Lara K. Pudwell

No abstract provided.

Returns To Selecting Value Stocks In Australia – The Aby Filters, Bruce Vanstone, Tobias Hahn, Gavin Finnie

Tobias Hahn

The development of the Financial Crisis throughout 2008 and into 2009 has caused many fund managers to question their Growth based investment models. Interest appears to be again rekindled in the traditional Value based models, where investment decisions are based on sound company fundamentals rather than abstract futuregrowth expectations. This paper reviews a specific set of value based filters for selecting undervalued stocks which appeared in a series of papers published soon after the 2000 Dot-Com debacle. This paper documents the performance of these filters in the Australian stockmarket.

Simplify, Cancel, And Other Math Lingo With Multiple Meanings, Lisa Yocco

Lisa S. Yocco

No abstract provided.

Logically Rectangular Finite Volume Methods With Adaptive Refinement On The Sphere, Marsha Berger, Donna Calhoun, Christiane Helzel, Randall Leveque

Donna Calhoun

The logically rectangular finite volume grids for two-dimensional partial differential equations on a sphere and for three-dimensional problems in a spherical shell introduced recently have nearly uniform cell size, avoiding severe Courant number restrictions. We present recent results with adaptive mesh refinement using the GEOCLAW software and demonstrate well-balanced methods that exactly maintain equilibrium solutions, such as shallow water equations for an ocean at rest over arbitrary bathymetry.

Conversion Of Vegetable And Algae Oils To Hydrocarbons Over Supported Metal Catalysts, T. Morgan, D. Grubb, E. Santillian-Jimenez, Samuel Morton, M. Crocker

Samuel A Morton

No abstract provided.

A Techno-Economic Analysis Of Carbon Dioxide Bio- Mitigation Using Microalgae, Samuel Morton

Samuel A Morton

No abstract provided.

Green Buildings: An Asset Manager's Dream Or Nightmare?, Linda Too

Linda Too

The mounting evidence on climate change has thrust the sustainability issue to the forefront of many political agendas. Current research has provided many business cases for sustainable design and construction. While commercial green buildings have been the mainstay, the green phenomenon has also spread to educational facilities. This paper provides a case study of the new Mirvac School of Sustainable Development Building at Bond University, Gold Coast, Australia. With its extensive green features, it is applying to be the first six-star rated green educational building in Australia. To this end, the management of green buildings will be a challenge for …

M.G. Michael And K. Michael (2009). "Uberveillance: Definition" In Ed. S. Butler, Fifth Edition Of The Macquarie Dictionary (Australia's National Dictionary, Sydney University), P. 1094, Susan Butler, M.G. Michael, K. Michael

Professor Katina Michael

No abstract provided.

Counting Pattern-Avoiding Permutations, Lara Pudwell

Lara K. Pudwell

No abstract provided.

Non-Smooth Solutions To Least Squares Problems, Jodi Mead

Jodi Mead

In an attempt to overcome the ill-posedness or illconditioning of inverse problems, regularization methods are implemented by introducing assumptions on the solution. Common regularization methods include total variation, L-curve, Generalized Cross Validation (GCV), and the discrepancy principle. It is generally accepted that all of these approaches except total variation unnecessarily smooth solutions, mainly because the regularization operator is in an L2 norm. Alternatively, statistical approaches to ill-posed problems typically involve specifying a priori information about the parameters in the form of Bayesian inference. These approaches can be more accurate than typical regularization methods because the regularization term is weighted with …

Problem #3468, Stan Wagon, Peter Saltzman, Joseph Devincentis

Stan Wagon, Retired

No abstract provided.

Open & Mobile Equipment, Timothy J. Rowley

Timothy J Rowley

This was a "Lightning Presentation" about making cutting edge technology available to university students.

Student Staff: A Village Philosophy, Lisa Caughron

Lisa Caughron

No abstract provided.

Neutrons And Hadronic Parity Violation, Br Holstein

Barry R Holstein

The history and phenomenology of hadronic parity violation are reviewed, and the important role of the neutron in unlocking the physics of this subject is outlined.

On The Issue Of Decoupled Decoding Of Codes Derived From Quaternion Orthogonal Designs, Tadeusz Wysocki, Beata Wysocki, Sarah Spence Adams

Sarah Spence Adams

Quaternion orthogonal designs (QODs) have been previously introduced as a basis for orthogonal space-time polarization block codes (OSTPBCs). This note will serve to correct statements concerning the optimality of a decoupled maximum-likelihood (ML) decoding algorithm. It will be shown that when compared to coupled decoding, the decoupled decoding is only optimal in certain cases. This raises several open problems concerning the decoding of OSTPBCs.

Partnerships For Community Building And Governance In Master Planned Communities: A Study Of Varsity Lakes At Gold Coast, Bhishna Bajracharya, George Earl, Shahed Khan

Bhishna Bajracharya

The development and management of master planned communities (MPCs) involve achieving the twin goals of building a sense of community and creating a distinctive place identity. The roles of private, public and community sectors in realising these goals of MPCs have been evolving over time with the increasing role of developers in provision of services with the local government playing a regulatory/facilitative role and community calling for greater engagement and local control. The major objective of the paper is to critically examine the nature and outcomes of collaboration between developers, local/state governments and existing/emerging community groups in the development of …

Identification Of Cancer-Associated Gene Pathways From Analysis Of Expression Data, Shuangge Ma

Shuangge Ma

No abstract provided.

A Framework For Technology Transfer, Arcot Desai Narasimhalu

Arcot Desai NARASIMHALU

Technology transfer is often perceived to be transfer of intellectual property (IP). Very few realize that there are other means of transferring technology. Most common means of technology transfer is the transfer of the IP alone. While this is interesting in itself, it is not the best means of transferring technology in all cases. IP such as patents, trademark and copyrighted material can easily be transferred in this manner. However, that is the lowest level of technology transfer possible. The next level of technology transfer is the ability to handover technology from the originating team to the recipient team. This …

Iron-Sulfide And Trace Element Behaviour In Sediments Of Coombabah Lake, Moreton Bay (Australia), Edward Burton, Leigh Sullivan, Richard Bush, Bernard Powell

Associate Professor Edward D Burton

No abstract provided.

Sludge-Derived Cu And Zn In A Humic-Gley Soil: Effect Of Dissolved Metal-Organic Matter Complexes On Sorption And Partitioning, Edward Burton, Darryl Hawker, M Redding

Associate Professor Edward D Burton

A sequential extraction scheme was combined with sorption isotherm analysis in order to investigate sorption of sewage sludge-derived Cu and Zn to the A-horizon of a humic-gley soil as a whole, and to the operationally defined exchangeable (1 M MgCl₂), carbonate (1 M NaOAc), Fe/Mn oxide (0.04 M NH₂OH.HCl), and organic (0.02 M HNO₃+30% H₂O₂) soil fractions. Sorption parameters were compared for a sample of sludge leachate (with 97.4% of Cu and 63.2% of Zn present as dissolved metal-organic matter complexes, as calculated by geochemical modelling involving MINTEQA2 and verified …

Factors Controlling The Geochemical Partitioning Of Trace Metals In Estuarine Sediments, Edward Burton, Ian Phillips, Darryl Hawker

Associate Professor Edward D Burton

The geochemical partitioning of trace metals in sediments is of great importance in risk assessment and remedial investigation. Selected factors that may control the partitioning behavior of Cu, Pb and Zn in non-sulfidic, estuarine sediments were examined with the use of combined sorption curve—sequential extraction analysis. This approach, which has not been previously used to examine estuarine sediments, allowed determination of sorption parameters for Cu, Pb and Zn partitioning to individual geochemical fractions. Partitioning behavior in sulfidic sediments was also determined by sequentially extracting Cu, Pb, and Zn from synthetic sulfide minerals and from natural sediment and pure quartz sand …

Sorption And Desorption Behaviour Of Tributyltin With Natural Sediments, Edward Burton, Ian Phillips, Darryl Hawker

Associate Professor Edward D Burton

Tributyltin (TBT) sorption to four natural sediment samples in artificial seawater was examined under a range of modified pH and salinity conditions. Three of the sediment samples were relatively pristine with regard to TBT contamination, but the fourth was a TBT-contaminated sediment from a commercial marina. Sorption of TBT was described well by linear sorption isotherms, with distribution coefficients ranging from 6.1 to 5210 L/kg depending on the pH and salinity. The sediment organic C content and particle size distribution were important determinants of sorption behavior. The presence of resident TBT in the contaminated marina sediment caused a substantial reduction …

Tributyltin Partitioning In Sediments: Effect Of Aging, Edward Burton, Ian Phillips, Darryl Hawker

Associate Professor Edward D Burton

The effect of aging on the solid/pore-water partitioning and desorption behaviour of tributyltin (TBT) in sediments was examined. Three sediment samples with contrasting physical and chemical properties were spiked with 10 mg/kg TBT and aged under sterile conditions for periods of time ranging from 1 to 84 days. Aging had a negligible effect on partitioning and desorption behaviour in a sandy sample with very low organic carbon content (0.2% w/w). In contrast, for samples with larger amounts of organic carbon (2.6% and 4.8% w/w), aging caused substantial increases in TBT sorption. For these samples, apparent distribution coefficients (KD,app) obtained from …

Fractionation And Extractability Of Sulfur, Iron And Trace Elements In Sulfidic Sediments, Edward Burton, Richard Bush, Leigh Sullivan

Associate Professor Edward D Burton

This study describes iron and sulfur fractionation, and the related extractability of selected trace elements (As, Cd, Cr, Cu, Ni, Pb and Zn) in estuarine sediments. The sediments were sulfidic, with moderately high concentrations of pore-water sulfide (200–600 μmol l−1) and acid-volatile sulfide (AVS; 9.9–129 μmol g−1). Pyrite-S concentrations increased with depth, with 63–251 μmol g−1 at site W1 and 312–669 μmol g−1 at site W2. The degree of sulfidisation was generally high (>80%), indicating that Fe may be limiting pyrite accumulation. The ratios of AVS to pyrite-S increased with sediment depth, as expected for the pyritisation of solid-phase …

Acid-Volatile Sulfide Oxidation In Coastal Floodplain Drains: Iron-Sulfur Cycling And Effects On Water Quality, Edward Burton, Richard Bush, Leigh Sullivan

Associate Professor Edward D Burton

The effect of acid-volatile sulfide (AVS) oxidation on Fe-S cycling and water quality in coastal flood plain drains from acid-sulfate soil landscapes was examined using natural sediments and synthetic iron monosulfide. Oxidation of AVS occurred rapidly (half-time ≤ 1 h) and produced elemental sulfur (S80(s)) and iron oxyhydroxide (FeOOH(s)). The initial rapid AVS oxidation process occurred without significant acidification or changes to the aqueous-phase composition. Severe acidification (pH < 4) occurred only once S80(s) began to oxidize to SO4 (within 2-3 days of the initial AVS oxidation). Our results demonstrate, for the first time with natural sediments, a significant pH-buffered (near-neutral) …