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2001

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Skin Color Detection For Face Localization In Human-Machine Communications, Douglas Chai, Son Lam Phung, Abdesselam Bouzerdoum Jan 2001

Skin Color Detection For Face Localization In Human-Machine Communications, Douglas Chai, Son Lam Phung, Abdesselam Bouzerdoum

Research outputs pre 2011

This paper presents the proposed user interface design for computers whereby users can navigate in a 3D graphics scene and change camera viewpoint via head movement. This human-machine communication relies very much on the performance of its face localization module, which must determine head pose and track head movement. We have employed the skin color detection approach to face localization. The approach is studied and presented. The experimental results show that our chosen methodology is very effective. Furthermore, we demonstrate that skin color detection approach can cope with the variations of skin color and lighting conditions

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What Moves Stock Markets? Evidence That Uk Stock Prices Deviate From Fundamentals, David E. Allen, Wenling Yang Jan 2001

What Moves Stock Markets? Evidence That Uk Stock Prices Deviate From Fundamentals, David E. Allen, Wenling Yang

Research outputs pre 2011

This article examines the deviation of the UK market index from market fundamentals implied by the simple dividend discount model and identifies other components that also affect price movements. The components are classified as permanent, temporary, excess stock returns and nonfundamental innovations in terms of a multivariate moving average model (Lee (1998)). We find that time varying discounted rates play an active role in explaining price deviations.

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A Compact Multi-Chip-Module Implementation Of A Multi-Precision Neural Network Classifier, Amine Bermak, Dominique Martinez Jan 2001

A Compact Multi-Chip-Module Implementation Of A Multi-Precision Neural Network Classifier, Amine Bermak, Dominique Martinez

Research outputs pre 2011

This paper describes a novel MCM digital implementation of a reconfigurable multi-precision neural network classifier. The design is based on a scalable systolic architecture with a user defined topology and arithmetic precision of the neural network. Indeed, the MCM integrates 64/32/16 neurons with a corresponding accuracy of 4/8/16-bits. A prototype has been designed and successfully tested in CMOS 0.7 μm technology

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Heckman's Methodology For Correcting Selectivity Bias : An Application To Road Crash Costs, Margaret Giles Jan 2001

Heckman's Methodology For Correcting Selectivity Bias : An Application To Road Crash Costs, Margaret Giles

Research outputs pre 2011

Aggregate road crash costs are traditionally determined using average costs applied to incidence figures found in Police-notified crash data. Such data only comprise a non-random sample of the true population of road crashes, the bias being due to the existence of crashes that are not notified to the Police. The traditional approach is to label the Police-notified sample as 'non-random' thereby casting a cloud over data analyses using this sample. Heckman however viewed similar problems as 'omitted variables' problems in that the exclusion of some observations in a systematic manner (so-called selectivity bias) has inadvertently introduced the need for an …

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B-Nodes: A New Scalable High Level Abstraction Model, Stanislaw P. Maj, Craig William Caulfield Jan 2001

B-Nodes: A New Scalable High Level Abstraction Model, Stanislaw P. Maj, Craig William Caulfield

Research outputs pre 2011

This paper proposes a new modeling technique called B-Nodes. B-Nodes represent a new, high-level abstraction that allows technical detail to be controlled using top-down recursive decomposition. This abstraction. is independent of architectural detail and can therefore accommodate rapid changes in technology. The use of recursive decomposition allows B-Nodes to be used not only for entire e-commerce system but also sub-modules within this system. The use of fundamental units allows the performance of heterogeneous technologies to be compared and other units to be derived. Results to date indicate no comparable model exists. Should further work validate this technique the authors recommend …

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Learning With Cyberfriends: The Development Of Professional Reflection-On-Action Skills Through Online Partnerships, Catherine Mcloughlin, Joseph Luca Jan 2001

Learning With Cyberfriends: The Development Of Professional Reflection-On-Action Skills Through Online Partnerships, Catherine Mcloughlin, Joseph Luca

Research outputs pre 2011

One the crises facing the professions is the scepticism surrounding the nature of professional knowledge and whether individuals can cope with the increased complexity of society and the changing demands of the workplace. Tertiary institutions have now strengthened their links with industry and have produced lists of attributes and communication skills they aim to cultivate in graduates. In order to develop these skills students need to be able to reflect on their learning experiences, integrate them with prior knowledge, self-evaluate and develop their own decision-making and planning processes. Online technologies can be used to support the process skills underpinning reflection-onaction …

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Quality In Online Delivery: What Does It Mean For Assessment In E-Learning Environments?, Catherine E Mcloughlin, Joseph Luca Jan 2001

Quality In Online Delivery: What Does It Mean For Assessment In E-Learning Environments?, Catherine E Mcloughlin, Joseph Luca

Research outputs pre 2011

While a great deal has been written on the advantages and benefits of online teaching, and research continues to proliferate, many practitioners are seeking guidelines that can be applied to the design of assessment in online environments. The last decade has seen the convergence of traditional distance education with on-campus modes of delivery and work-based training signalling new models of flexible delivery. In addition, demand driven education accentuates the learner’s role and needs while the teacher has become a manager, mediator and motivator of student learning. Issues raised by national and international bodies and quality assurance agencies now seem to …

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Skewness Is The Name Of The Game, Y. H. Cheung Jan 2001

Skewness Is The Name Of The Game, Y. H. Cheung

Research outputs pre 2011

Theoretical models of risk taking attempt to explain why risk-averse individuals participate in unfair gambles. This paper evaluates the two explanations as to why rational individuals would accept gambles with negative expected returns. It is found that it is skewness, not the mean or the variance of the prize distribution that attracts risk-averse gamblers. However, evidence shows that there seems to be an optimal trade-off between operators’ sales revenues and skewness of the pay-off; a point that designer of gambling games needs to heed to.

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Inference Of Regular Languages Using Model Simplicity, Philip Hingston Jan 2001

Inference Of Regular Languages Using Model Simplicity, Philip Hingston

Research outputs pre 2011

We describe an approach that is related to a number of existing algorithms for the inference of a regular language from a set of positive (and optionally also negative) examples. Variations on this approach provide a family of algorithms that attempt to minimise the complexity of a description of the example data in terms of a finite state automaton model. Experiments using a standard set of small problems show that this approach produces satisfactory results when positive examples only are given, and can be helpful when only a limited number of negative examples is available. The results also suggest that …

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M-Garch Hedge Ratios And Hedging Effectiveness In Australian Futures Markets [Working Paper], Wenling Yang Jan 2001

M-Garch Hedge Ratios And Hedging Effectiveness In Australian Futures Markets [Working Paper], Wenling Yang

Research outputs pre 2011

This study estimates optimal hedge ratios using various econometric models. Applying daily AOIs and SPI futures on the Australian market, optimal hedge ratios are calculated from the OLS regression model, the bivariate vector autoregressive model (BVAR), the error-correction model (ECM) and the multivariate diagonal Vec GARCH Model. The hedging effectiveness is measured in terms of ex-post and ex-ante risk-return tradeoff at various forecasting horizons. It is generally found that the GARCH time varying hedge ratios provide the greatest portfolio risk reduction, particularly for longer hedging horizons, but they do not generate the highest portfolio return.

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Application Of Shunting Inhibitory Artificial Neural Networks To Medical Diagnosis, Ganesh Arulampalam, Abdesselam Bouzerdoum Jan 2001

Application Of Shunting Inhibitory Artificial Neural Networks To Medical Diagnosis, Ganesh Arulampalam, Abdesselam Bouzerdoum

Research outputs pre 2011

Shunting inhibitory artificial neural networks (SIANNs) are biologically inspired networks in which the neurons interact among each other via a nonlinear mechanism called shunting inhibition. Since they are high-order networks, SIANNs are capable of producing complex, nonlinear decision boundaries. In this article, feedforward SIANNs are applied to several medical diagnosis problems and the results are compared with those obtained using multilayer perceptrons (MLPs). First, the structure of feedforward SIANNs is presented. Then, these networks are applied to some standard medical classification problems, namely the Pima Indians diabetes and Wisconsin breast cancer classification problems. The SIANN performance compares favourably with that …

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Are Bank Deposits And Bank-Affiliated Managed Funds Close Substitutes?, David E. Allen, Jerry T. Parwada Jan 2001

Are Bank Deposits And Bank-Affiliated Managed Funds Close Substitutes?, David E. Allen, Jerry T. Parwada

Research outputs pre 2011

This study tests the hypothesis that bank liabilities and managed funds are close substitutes. Some literature associates the alleged decline in banking business with the disintermediation of banks’ traditional deposit-taking business in favour of investment management. A comparative assessment of managed fund and bank deposit qualitative attributes fails to support substitutability. Using data on Australian bank-affiliated funds and a nine-year record of bank liability balances, this study finds that, empirically, managed funds do not displace bank liabilities. Prudential capital adequacy requirements dissuade banks from using in-house managed investments as indirect conduits for raising funds in the same manner as deposit …

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Investigating Processes Of Social Knowledge Construction In Online Environments, Catherine Mcloughlin, Joseph Luca Jan 2001

Investigating Processes Of Social Knowledge Construction In Online Environments, Catherine Mcloughlin, Joseph Luca

Research outputs pre 2011

On-line forums provide opportunity and potential for collaborative work, dialogue and study that can increase the flexibility of learning while motivating participants. By enabling teacher-learner and learner-learner interaction online systems can support the essential elements of a learning conversation by providing scope for discussion, dialogue and interaction. It is argued that this medium presents a socio-cognitive educational domain, unique in its potential for dialogue, participation and collaboration and a departure from face-to-face didactic paradigms of learning. Often, the types of verbal interactions and the means by which new knowledge is created on-line are not well understood. The paper provides frameworks …

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Classification Of Bandlimited Fsk4 And Fsk8 Signals, Visalakshi Ramakonar, Daryoush Habibi, Abdesselam Bouzerdoum Jan 2001

Classification Of Bandlimited Fsk4 And Fsk8 Signals, Visalakshi Ramakonar, Daryoush Habibi, Abdesselam Bouzerdoum

Research outputs pre 2011

This paper compares two types of classifiers applied to bandlimited FSK4 and FSK8 signals. The first classifier employs the decision-theoretic approach and the second classifier is a neural network structure. Key features are extracted using a zero crossing sampler. A novel decision tree is proposed and optimum threshold values are found for the decision theoretic approach. For the neural network, the optimum structure is found to be the smallest structure to give 100% overall success rate. The performance of the both classifiers has been evaluated by simulating bandlimited FSK4 and FSK8 signals corrupted by Gaussian noise. It is shown that …

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Qualitative Research Interviews: Identifying Problems In Technique, Gary Partington Jan 2001

Qualitative Research Interviews: Identifying Problems In Technique, Gary Partington

Research outputs pre 2011

Interviews that are conducted for qualitative research rely for their quality on the nature of the interactions with the interviewees. In this article, some of the factors that contribute to quality interactions are discussed in relation to a research project based on interviews conducted by a team of researchers. Issues covered include the importance of empathy and rapport, listening and questioning, restatement, clarification and persistence. Researchers should be aware of the powerful influence of these factors on the responses of interviewees. They should take steps to ensure quality data is obtained by using appropriate interview techniques and suitable interviewers.

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Novel Image Enhancement Technique Using Shunting Inhibitory Cellular Neural Networks, Tarik Hammadou, Abdesselam Bouzerdoum Jan 2001

Novel Image Enhancement Technique Using Shunting Inhibitory Cellular Neural Networks, Tarik Hammadou, Abdesselam Bouzerdoum

Research outputs pre 2011

This paper describes a method for improving image quality in a color CMOS image sensor. The technique simultaneously acts to compress the dynamic range, reorganize the signal to improve visibility, suppress noise, identify local features, achieve color constancy, and lightness rendition. An efficient hardware architecture and a rigorous analysis of the different modules are presented to achieve high quality CMOS digital cameras

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An E-Learning Solution To Creating Work-Related Skills And Competencies For The Knowledge-Based Economy, Catherine Mcloughlin, Joseph Luca Jan 2001

An E-Learning Solution To Creating Work-Related Skills And Competencies For The Knowledge-Based Economy, Catherine Mcloughlin, Joseph Luca

Research outputs pre 2011

This case study presents a description of Web-based tertiary unit of study developed in collaboration with employer, industry and university stakeholders with a view to fostering skills in interactive multimedia and project management. The course utilised a range of learning approaches, including peer teaching and integrated assessment in which participants provided feedback to colleagues. The paper also discusses how electronic communications and Apple-based technologies can be used effectively to create environments for professional learning. The intention is to describe the design of the learning environment, the curriculum approach adopted, the types of learning activities and assessment tasks that were designed …

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Wetland Vegetation Monitoring, 2000/2001 (Salinity Action Plan), B. Franke, R. Gurner, R. Froend Jan 2001

Wetland Vegetation Monitoring, 2000/2001 (Salinity Action Plan), B. Franke, R. Gurner, R. Froend

Research outputs pre 2011

This report represents the vegetation component of a project designed to provide ongoing monitoring of wetland salinity and biological resources in wetlands of the agricultural zone of south-west Western Australia. Maintenance of wetland biological diversity in the agricultural zone is one of the major objectives of the Salinity Action Plan. Due to their low position in the landscape, wetlands are the habitat most affected by salinisation.

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Learning Objects: Supporting Flexible Delivery Of Flexible Learning, Ron Oliver Jan 2001

Learning Objects: Supporting Flexible Delivery Of Flexible Learning, Ron Oliver

Research outputs pre 2011

There are now many educational organizations and institutions that have decided on flexible delivery and online learning as strategies that they are keen to pursue. While many educators value online delivery of programs for the flexibility and opportunities offered, the environment offers far more than these outcomes alone. Online delivery supports and encourages very powerful learning environments and has the prospect to transform education if approached in the correct fashion. Across the world, conventional approaches to the design and development of online learning environments in higher education frequently result in many lost opportunities for both teachers and learners. These losses …

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Home Range Analyses Of Shorebirds Wintering Along The Gulf Of Mexico, Florida, Usa, Christine Gabbard, Gary Sprandel, David Cobb Jan 2001

Home Range Analyses Of Shorebirds Wintering Along The Gulf Of Mexico, Florida, Usa, Christine Gabbard, Gary Sprandel, David Cobb

Wader Study Group Bulletin

No abstract provided.

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Summer Report: June-July 2000, Bill Pranty Jan 2001

Summer Report: June-July 2000, Bill Pranty

Florida Field Naturalist

No abstract provided.

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Winter Report: December 2000-February 2001, Bill Pranty Jan 2001

Winter Report: December 2000-February 2001, Bill Pranty

Florida Field Naturalist

No abstract provided.

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Breeding Status Of The Black Tern In California, W. David Shuford, Joan M. Humphrey, Nadav Nur Jan 2001

Breeding Status Of The Black Tern In California, W. David Shuford, Joan M. Humphrey, Nadav Nur

Western Birds

No abstract provided.

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A Dynamic Programming-Based Approach To Microarray Image Comparison And Registration, Sunil Bosco Rodrigues Jan 2001

A Dynamic Programming-Based Approach To Microarray Image Comparison And Registration, Sunil Bosco Rodrigues

Masters Theses

"Microarray technology is increasingly used as a means of high throughput analysis of human, non-human and plant genomes. Manual methods of array production have inherent imperfections and variations of the quality of output data derived from these arrays. A dynamic programming-based approach is presented to validate the quality of such data prior to insertion into evolving databases in order to assign reliably, genetic aberrations to bio-medical functions. Dynamic programming is used for comparing normal and tumor microarray image pairs and a cost function is developed which gives a value representing the difference between the images. Quality of the image pairs …

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Recent Bird Records From The Grand Canyon Region, 1974-2000, Charles T. Larue, Lara L. Dickson, Nikolle L. Brown, John R. Spence, Lawrence E. Stevens Jan 2001

Recent Bird Records From The Grand Canyon Region, 1974-2000, Charles T. Larue, Lara L. Dickson, Nikolle L. Brown, John R. Spence, Lawrence E. Stevens

Western Birds

No abstract provided.

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Historical Changes In The Abundance And Distribution Of The American Avocet At The Northern Limit Of Its Winter Range, Mark A. Colwell, Tamar Danufsky, Ryan L. Mathis, Stanley W. Harris Jan 2001

Historical Changes In The Abundance And Distribution Of The American Avocet At The Northern Limit Of Its Winter Range, Mark A. Colwell, Tamar Danufsky, Ryan L. Mathis, Stanley W. Harris

Western Birds

No abstract provided.

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Speleo Spiel, No. 323, December 2000-January 2001, Peter Verwey Jan 2001

Speleo Spiel, No. 323, December 2000-January 2001, Peter Verwey

Speleo Spiel

Contents: Editorial -- Club Matters -- Articles/Trip Reports and.. -- STC Warehouse Sales

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Water Quality Study Of The Barton Springs Segment Of The Edwards Aquifer, Southern Travis And Northern Hays Counties, Texas Bseacd Report Of Investigations 2001-0801, Barton Springs/Edwards Aquifer Conservation District Jan 2001

Water Quality Study Of The Barton Springs Segment Of The Edwards Aquifer, Southern Travis And Northern Hays Counties, Texas Bseacd Report Of Investigations 2001-0801, Barton Springs/Edwards Aquifer Conservation District

KIP Data Sets and Technical Reports

PREFACE This report is a reprint of a portion of a report titled: "Water Quality and Flow Loss Study of the Barton Springs Segment of the Edwards Aquifer, Southern Travis and Northern Hays Counties" completed in August 2001. The original report addressed three main topics including: water levels, flow loss, and water quality. This report is a reproduction of the information pertaining to the water quality portion only. Text, tables, and figures pertaining to the water quality investigation are generally the same as in the original 2001 report. Changes to the original report include the addition of an abstract, reformatting …

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Breeding Productivity And Survival Of The Endangered Hawai'i Creeper In A Wet Forest Refuge On Mauna Kea, Hawaii, Bethany L. Woodworth, Jay T. Nelson, Erik J. Tweed, Steven G. Fancy, Michael P. Moore, Emily B. Cohen, Mark S. Collins Jan 2001

Breeding Productivity And Survival Of The Endangered Hawai'i Creeper In A Wet Forest Refuge On Mauna Kea, Hawaii, Bethany L. Woodworth, Jay T. Nelson, Erik J. Tweed, Steven G. Fancy, Michael P. Moore, Emily B. Cohen, Mark S. Collins

Studies in Avian Biology

No abstract provided.

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Phylogenetic Placement Of The Po'ouli, Melamprosops Phaeosoma, Based On Mitochondrial Dna Sequence And Osteological Characters, Robert C. Fleischer, Cheryl L. Tarr, Helen F. James, Beth Slikas, Carl E. Mcintosh Jan 2001

Phylogenetic Placement Of The Po'ouli, Melamprosops Phaeosoma, Based On Mitochondrial Dna Sequence And Osteological Characters, Robert C. Fleischer, Cheryl L. Tarr, Helen F. James, Beth Slikas, Carl E. Mcintosh

Studies in Avian Biology

No abstract provided.

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