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Articles 2341 - 2370 of 4868

Full-Text Articles in Physical Sciences and Mathematics

Preclinical Evaluation Of Novel All-In-One Formulations Of 5-Fluorouracil And Folinic Acid With Reduced Toxicity Profiles - Supplementary Data, Tamantha K. Stutchbury, Kara L. Vine, Julie M. Locke, Jeremy S. Chrisp, J. B. Bremner, P Clingan, Marie Ranson Jan 2010

Preclinical Evaluation Of Novel All-In-One Formulations Of 5-Fluorouracil And Folinic Acid With Reduced Toxicity Profiles - Supplementary Data, Tamantha K. Stutchbury, Kara L. Vine, Julie M. Locke, Jeremy S. Chrisp, J. B. Bremner, P Clingan, Marie Ranson

Faculty of Science - Papers (Archive)

Objectives: 5-Fluorouracil (5-FU) in combination with its synergistic biomodulator folinic acid maintains a pivotal position in cancer chemotherapy. However, clinical limitations persist with the administration of these drugs in combination including phlebitis and catheter blockages, which are associated with reduced efficacy and/or quality of life for patients. We have previously reported novel all-in-one, pH neutral, parenteral 5-FU and folinic acid formulations (termed Fluorodex) incorporating beta-cyclodextrins. Fluorodex maintains potency while overcoming the accepted incompatibility of 5-FU and folinic acid.
Methods: We performed toxicological, pharmacokinetic and biodistribution, and efficacy evaluations of Fluorodex compared to 5-FU:folinic acid using several administration routes …

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Elastic Scattering Studies Of Aligned Dmpc Multilayers On Different Hydrations, Marcus Trapp, Fanni Juranyi, Moeava Tehei, Lambert Van Eijck, Bruno Demé, Thomas Gutberlet, Judith Peters Jan 2010

Elastic Scattering Studies Of Aligned Dmpc Multilayers On Different Hydrations, Marcus Trapp, Fanni Juranyi, Moeava Tehei, Lambert Van Eijck, Bruno Demé, Thomas Gutberlet, Judith Peters

Faculty of Science - Papers (Archive)

Biological membranes, consisting mainly of phospholipids and proteins, are organized in a bilayered structure which exhibits dynamical behaviour within time regimes ranging from 10-12 s with the motion of alkyl chain defects and 1 s corresponding to collective excitations of the bilayer [1]. With the prominent role hydration plays on the structural phase behaviour of phospholipids membranes, it is essential for a better description of membranes to understand also the influence of hydration on the dynamics of membrane systems. In the present study we have performed neutron scattering investigations on highly oriented DMPC-d54 multilayers at two different relative humidity (rh) …

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Essential Biological Processes Of An Emerging Pathogen: Dna Replication, Transcription, And Cell Division In Acinetobacter Spp., Andrew Robinson, Anthony J. Brzoska, Kylie M. Turner, Ryan Withers, Elizabeth J. Harry, Peter J. Lewis, Nicholas E. Dixon Jan 2010

Essential Biological Processes Of An Emerging Pathogen: Dna Replication, Transcription, And Cell Division In Acinetobacter Spp., Andrew Robinson, Anthony J. Brzoska, Kylie M. Turner, Ryan Withers, Elizabeth J. Harry, Peter J. Lewis, Nicholas E. Dixon

Faculty of Science - Papers (Archive)

Species of the bacterial genus Acinetobacter are becoming increasingly important as a source of hospital-acquired infections (31, 185, 204). Acinetobacter spp. are ubiquitous nonmotile gammaproteobacteria, typified by metabolic versatility and a capacity for natural transformation (172, 204). The species of most clinical relevance is A. baumannii; however, pathogenic strains of A. lwoffi and A. baylyi have also been described (38, 185, 215).

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Activity And Dynamics Of An Enzyme, Pig Liver Esterase, In Near-Anhydrous Conditions, Murielle Lopez, Vandana Kurkal-Siebert, Rachel V. Dunn, Moeava Tehei, John L. Finney, Jeremy C. Smith, Roy M. Daniel Jan 2010

Activity And Dynamics Of An Enzyme, Pig Liver Esterase, In Near-Anhydrous Conditions, Murielle Lopez, Vandana Kurkal-Siebert, Rachel V. Dunn, Moeava Tehei, John L. Finney, Jeremy C. Smith, Roy M. Daniel

Faculty of Science - Papers (Archive)

Water is widely assumed to be essential for life, although the exact molecular basis of this requirement is unclear. Water facilitates protein motions, and although enzyme activity has been demonstrated at low hydrations in organic solvents, such nonaqueous solvents may allow the necessary motions for catalysis. To examine enzyme function in the absence of solvation and bypass diffusional constraints we have tested the ability of an enzyme, pig liver esterase, to catalyze alcoholysis as an anhydrous powder, in a reaction system of defined water content and where the substrates and products are gaseous. At hydrations of 3 (52) molecules of …

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Trace Gas Emissions From Savanna Fires In Northern Australia, Clare Paton-Walsh, Nicholas M. Deutscher, David Griffith, B. W. Forgan, Stephen Wilson, Nicholas Jones, D. Edwards Jan 2010

Trace Gas Emissions From Savanna Fires In Northern Australia, Clare Paton-Walsh, Nicholas M. Deutscher, David Griffith, B. W. Forgan, Stephen Wilson, Nicholas Jones, D. Edwards

Faculty of Science - Papers (Archive)

We present analyses of near‐infrared ground‐based Fourier transform infrared solar absorption spectra recorded from a site in Darwin, Northern Territory, Australia (12.4°S, 130.9°E) from August 2005 to June 2008. Total column amounts of carbon monoxide derived from these spectra show a very clear annual cycle, with evidence of transported pollution from Indonesian fires in 2006. Aerosol optical depth measurements from the same site show a similar annual cycle but without exceptional values in 2006, suggesting significant loss of aerosol loading in the transported and aged smoke. In addition, we report the first ever measurements by remote sensing solar Fourier transform …

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The Quaternary Organization And Dynamics Of The Molecular Chaperone Hsp26 Are Thermally Regulated, J. L. Benesch, Andrew Aquilina, Andrew Baldwin, Agata Rekas, Florian Stengel, Robyn Lindner, Eman Basha, G. Devlin, J. Horwitz, Elizabeth Vierling, John Carver, C. V. Robinson Jan 2010

The Quaternary Organization And Dynamics Of The Molecular Chaperone Hsp26 Are Thermally Regulated, J. L. Benesch, Andrew Aquilina, Andrew Baldwin, Agata Rekas, Florian Stengel, Robyn Lindner, Eman Basha, G. Devlin, J. Horwitz, Elizabeth Vierling, John Carver, C. V. Robinson

Faculty of Science - Papers (Archive)

The function of ScHSP26 is thermally controlled: the heat shock that causes the destabilization of target proteins leads to its activation as a molecular chaperone. We investigate the structural and dynamical properties of ScHSP26 oligomers through a combination of multiangle light scattering, fluorescence spectroscopy, NMR spectroscopy, and mass spectrometry. We show that ScHSP26 exists as a heterogeneous oligomeric ensemble at room temperature. At heat-shock temperatures, two shifts in equilibria are observed: toward dissociation and to larger oligomers. We examine the quaternary dynamics of these oligomers by investigating the rate of exchange of subunits between them and find that this not …

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Measures Of Taxonomic Distinctness Do Not Reliably Assess Anthropogenic Impacts On Intertidal Mollusc Communities, Trudy Costa, Timothy O'Hara, Michael Keough Jan 2010

Measures Of Taxonomic Distinctness Do Not Reliably Assess Anthropogenic Impacts On Intertidal Mollusc Communities, Trudy Costa, Timothy O'Hara, Michael Keough

Faculty of Science - Papers (Archive)

Indices of taxonomic distinctness measure the taxonomic breadth of a community and may be more sensitive to human impacts than conventional diversity indices. They have the advantage of being, in theory, insensitive to sampling effort and can be calculated using presence/absence data. The average taxonomic distinctness index and variation in taxonomic distinctness index were used to assess the effects of putative human impacts on molluscan community composition at 63 rocky intertidal platforms on the coast of Victoria, Australia. The use of 2 sampling techniques, viz. timed searches and quadrats, was compared. Sites exposed to sewage discharge maintained high taxonomic distinctness, …

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Side By Side Measurements Of Co2 By Ground-Based Fourier Transform Spectrometry (Fts), Janina Messerschmidt, Ronald Macatangay, Justus Notholt, Christof Petri, Thorsten Warneke, Christine Weinzierl Jan 2010

Side By Side Measurements Of Co2 By Ground-Based Fourier Transform Spectrometry (Fts), Janina Messerschmidt, Ronald Macatangay, Justus Notholt, Christof Petri, Thorsten Warneke, Christine Weinzierl

Faculty of Science - Papers (Archive)

High resolution solar absorption Fourier transform spectrometry (FTS) is the most precise ground-based remote sensing technique to measure the total column of atmospheric carbon dioxide. For carbon cycle studies as well as for the calibration and validation of spaceborne sensors the instrumental comparability of FTS systems is of critical importance. Retrievals from colocated measurements by two identically constructed FTS systems have been compared for the first time. Under clear sky conditions a precision for the retrieved xCO2 better than ∼0.1% is demonstrated and the instruments agree within ∼0.07%. An important factor in achieving such good comparability of the xCO2 is …

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Distribution Of Thermogenic Activity In Floral Tissues Of Nelumbo Nucifera, Nicole M. Grant, Rebecca E. Miller, Jennifer Watling, Sharon A. Robinson Jan 2010

Distribution Of Thermogenic Activity In Floral Tissues Of Nelumbo Nucifera, Nicole M. Grant, Rebecca E. Miller, Jennifer Watling, Sharon A. Robinson

Faculty of Science - Papers (Archive)

Thermogenesis in Nelumbo nucifera (Gaertn.) has been known to scientists for many years; however, the extent of heating by different floral parts remains unclear. We present evidence that the receptacle, stamens and petals produce heat independently, and that the source of heating in these tissues is most likely the alternative oxidase (AOX). The temperatures of the receptacle, petals and stamens were significantly higher than non-thermogenic leaf tissue. After removal from the pedicel, the receptacle retained the most heat (8.1 ± 1.9°C above non-thermogenic tissue temperature) and the petals the least (2.8 ± 4.2°C), with the stamens intermediate. High AOX protein …

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Suitability Of Membrane Bioreactor For Treatment Of Recalcitrant Textile Dye Wastewater Utilising White-Rot Fungi, Faisal I. Hai, Kazuo Yamamoto Jan 2010

Suitability Of Membrane Bioreactor For Treatment Of Recalcitrant Textile Dye Wastewater Utilising White-Rot Fungi, Faisal I. Hai, Kazuo Yamamoto

Faculty of Science - Papers (Archive)

The performance of a laboratory scale membrane bioreactor (MBR) — utilizing a mixed microbial community dominated by fungi— for treatment of textile dye wastewater was investigated. A synthetic wastewater containing dye, starch (main contributor to total organic carbon, TOC) and other nutrients was used. Preliminary batch tests confirmed the superior decoloration capacity of pure fungus culture (Coriolus versicolor, NBRC 9791) as compared to that of conventional activated sludge. Simultaneous biosorption and biodegradation was evident in case of the fungus, while mainly biosorption was responsible for decoloration by activated sludge. On the other hand, activated sludge demonstrated comparatively faster TOC removal. …

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Naturalism, Nature And Questions Of Style In Jinsha River Rock Art, Northwest Yunnan, China, Paul S. C. Tacon, Li Gang, Yang Decong, Sally K. May, Liu Hong, Maxime Aubert, Ji Xueping, Darren Curnoe, Andy I. R. Herries Jan 2010

Naturalism, Nature And Questions Of Style In Jinsha River Rock Art, Northwest Yunnan, China, Paul S. C. Tacon, Li Gang, Yang Decong, Sally K. May, Liu Hong, Maxime Aubert, Ji Xueping, Darren Curnoe, Andy I. R. Herries

Faculty of Science - Papers (Archive)

The naturalistic rock art of Yunnan Province is poorly known outside of China despite two decades of investigation by local researchers. The authors report on the first major international study of this art, its place in antiquity and its resemblance to some of the rock art of Europe, southern Africa and elsewhere. While not arguing a direct connection between China, Europe and other widely separated places, this article suggests that rock-art studies about the nature of style, culture contact and the transmission of iconography across space and time need to take better account of the results of neuroscience research, similar …

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Scale Dependence Of Lithological Control On Topography: Bedrock Channel Geometry And Catchment Morphometry In Western Scotland, John D. Jansen, Alexandru T. Codilean, Paul Bishop, Trevor B. Hoey Jan 2010

Scale Dependence Of Lithological Control On Topography: Bedrock Channel Geometry And Catchment Morphometry In Western Scotland, John D. Jansen, Alexandru T. Codilean, Paul Bishop, Trevor B. Hoey

Faculty of Science - Papers (Archive)

We propose that a scale-dependent topographic signature of erodibility arises due to fiuvial and glacial erosion acting on different parts of the landscape at different times. For 14 catchments in western Scotland, we define three levels of substrate erodibility in order of decreasing resistance: quartzite rocks, nonquartzite rocks, and zones of fault-related fracture. Then, using digital topographic and planimetric data coupled with field measurements, we identify regression-based scaling relationships between substrate erodibility and morphometric parameters at two spatial scales. Catchment-scale morphometry shows a weak to variable relationship with substrate metrics overall. Erodibility can be inferred from catchment steepness indices (i.e., …

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Feeding Biology Of Two Functionally Different Foregut-Fermenting Mammals, The Marsupial Red Kangaroo And The Ruminant Sheep: How Physiological Ecology Can Inform Land Management, Adam Munn, T J. Dawson, S R. Mcleod Jan 2010

Feeding Biology Of Two Functionally Different Foregut-Fermenting Mammals, The Marsupial Red Kangaroo And The Ruminant Sheep: How Physiological Ecology Can Inform Land Management, Adam Munn, T J. Dawson, S R. Mcleod

Faculty of Science - Papers (Archive)

Fermentative digestion in an expanded foregut region has evolved independently among Australia's marsupial kangaroos as well as among placental ruminants. However, notable differences occur in the form and function of the kangaroo and ruminant forestomachs, the main site of fermentation; kangaroos possess a tubiform forestomach, reminiscent of the horse colon, whereas ruminants possess a large vat-like structure. How these differences in gut form might influence kangaroo and sheep ecologies is uncertain. We compared diet choice, apparent digestibility (dry matter), food intake and grazing behaviour of Australia's largest kangaroo, the red kangaroo Macropus rufus and the ruminant sheep Ovis aries. Digestive …

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Charge Transport In Dye-Sensitized Solar Cells Based On Flame-Made Tio2 Nanoparticles, George Tsekouras, Masanori Miyashita, Yung Kent Kho, Wey Yang Teoh, Attila J. Mozer, Rose Amal, Shogo Mori, Gordon G. Wallace Jan 2010

Charge Transport In Dye-Sensitized Solar Cells Based On Flame-Made Tio2 Nanoparticles, George Tsekouras, Masanori Miyashita, Yung Kent Kho, Wey Yang Teoh, Attila J. Mozer, Rose Amal, Shogo Mori, Gordon G. Wallace

Faculty of Science - Papers (Archive)

The fundamental understanding on charge-transport properties of flame-synthesized TiO2 in dye-sensitized solar cells (DSSCs) is established in this work. By employing a one-step flame spray pyrolysis (FSP), predominantly anatase TiO2 nanoparticles with average nanoparticle sizes between 11 and 36 nm were achieved by varying the rate of combustion enthalpy (through varying liquid precursor feed flow rates) and using either an “openflame” or “enclosed-flame” configuration. Electron diffusion coefficient (D), electron lifetime (τ ), open circuit voltage (Voc ), and capacitance (C) measurements carried out on FSP TiO2 -based DSSCs demonstrated that interband charge trap density decreased with increase in particle size. …

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Microbial Communities Of Subtidal Shallow Sandy Sediments Change With Depth And Wave Disturbance, But Nutrient Exchanges Remain Similar, Hugh I. Forehead, Peter A. Thompson Jan 2010

Microbial Communities Of Subtidal Shallow Sandy Sediments Change With Depth And Wave Disturbance, But Nutrient Exchanges Remain Similar, Hugh I. Forehead, Peter A. Thompson

SMART Infrastructure Facility - Papers

Along 3 replicate transects, sediments were sampled from a subtidal sandbank in Cockburn Sound, Western Australia, at 4 depths: 1.5, 4 and 8 m and at 14 m on the flat at the base of the bank. Pulse amplitude modulated (PAM) fluorescence, fluxes of oxygen and inorganic nutrients, N2 fixation and denitrification were measured and sediments analysed for granulometry, pigments, fatty acids, neutral lipids, organic C and total N. There were 2 functional depth zones: 1.5 ~ <4, and ≥4 m. At 1.5 m, chl a concentration was 42.3 mg m–2 (1.83 SE, n = 12), sediments were net heterotrophic, and there were effluxes of inorganic …

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Simreef And Reefgame: Gaming For Integrated Reef Research And Management, Deborah Cleland, Anne Dray, Pascal Perez, Rollan Geronimo Jan 2010

Simreef And Reefgame: Gaming For Integrated Reef Research And Management, Deborah Cleland, Anne Dray, Pascal Perez, Rollan Geronimo

SMART Infrastructure Facility - Papers

As threats to coastal and ocean systems grow in scale and complexity, the calls for new approaches to research and management grow in volume. The Modeling and Decision Support Working Group (MDSWG) of the CRTR Program has developed two participatory gaming tools that address the need for integrative approaches to coral reef management. SimReef is a regional model and role-play game aimed at policy makers and industry representatives. It simulates coastal development trajectories and trade-offs between environmental, social and economic concerns. ReefGame is a local-level model and board game that helps local people and reef managers explore interactions between livelihoods, …

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Some Economics Of Mining Taxation, Henry Ergas, Mark Harrison, Jonathon Pincus Jan 2010

Some Economics Of Mining Taxation, Henry Ergas, Mark Harrison, Jonathon Pincus

SMART Infrastructure Facility - Papers

We argue five main propositions. Firstly, the choice between royalties and profit-based taxation involves an efficiency trade-off, between diminished incentives to produce output on one hand, and diminished incentives to minimize costs on the other (as in Laffont and Tirole 1993). So the Brown tax is indeed a tax, and one that reduces the incentive to mine. Next, the ex post Resource Super Profits Tax (RSPT) falls on quasi-rents as well as on rents, and therefore involves some expropriation. Third, there may be a case in favour of a retrospective RSPT or the like, but it has yet to be …

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New Policies Create A New Politics: Issues Of Institutional Design In Climate Change Policy, Henry Ergas Jan 2010

New Policies Create A New Politics: Issues Of Institutional Design In Climate Change Policy, Henry Ergas

SMART Infrastructure Facility - Papers

Institutional design focuses on the task of providing accountability and effective monitoring of decision-making by bodies vested with the coercive powers of the state in a context where information is inherently limited, costly to acquire and asymmetrically distributed. This paper focuses on issues of institutional design in the context of climate change policy. It examines proposals advanced in the June 2008 Draft and Final Reports of the Garnaut Climate Change Review (‘Garnaut Reports’), and in the Government’s July 2008 Green Paper and December 2008 White Paper on the Carbon Pollution Reduction Scheme (‘Green and White Papers’) with respect to how …

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Net Neutrality Regulation: The Economic Evidence , Jerry Brito, Martin E. Cave, Robert W. Crandall, Larry F. Darby, Everett Ehrlich, Jeffrey A. Eisenach, Jerry Ellig, Henry Ergas, David J. Farber, Gerald R. Faulhaber, Robert W. Hahn, Alfred E. Kahn, Wayne A. Leighton, Robert E. Litan, Glen O. Robinson, Hal J. Singer, Vernon L. Smith, William E. Taylor Iii, Timothy J. Tardiff, Leonard Waverman, Dennis Weisman Jan 2010

Net Neutrality Regulation: The Economic Evidence , Jerry Brito, Martin E. Cave, Robert W. Crandall, Larry F. Darby, Everett Ehrlich, Jeffrey A. Eisenach, Jerry Ellig, Henry Ergas, David J. Farber, Gerald R. Faulhaber, Robert W. Hahn, Alfred E. Kahn, Wayne A. Leighton, Robert E. Litan, Glen O. Robinson, Hal J. Singer, Vernon L. Smith, William E. Taylor Iii, Timothy J. Tardiff, Leonard Waverman, Dennis Weisman

SMART Infrastructure Facility - Papers

In the authors' shared opinion, the economic evidence does not support the regulations proposed in the Commission’s Notice of Proposed Rulemaking Regarding Preserving the Open Internet and Broadband Industry Practices (the “NPRM”). To the contrary, the economic evidence provides no support for the existence of market failure sufficient to warrant ex ante regulation of the type proposed by the Commission, and strongly suggests that the regulations, if adopted, would reduce consumer welfare in both the short and long run. To the extent the types of conduct addressed in the NPRM may, in isolated circumstances, have the potential to harm competition …

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Intelligent Negotiation Behaviour Model For An Open Railway Access Market, S K. Wong, T K. Ho Jan 2010

Intelligent Negotiation Behaviour Model For An Open Railway Access Market, S K. Wong, T K. Ho

SMART Infrastructure Facility - Papers

In an open railway access market, the provisions of railway infrastructures and train services are separated and independent. Negotiations between the track owner and train service providers are thus required for the allocation of the track capacity and the formulation of the services timetables, in which each party, i.e. a stakeholder, exhibits intelligence from the previous negotiation experience to obtain the favourable terms and conditions for the track access. In order to analyse the realistic interacting behaviour among the stakeholders in the open railway access market schedule negotiations, intelligent learning capability should be included in the behaviour modelling. This paper …

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A Fiber Bragg Grating Sensor System For Train Axle Counting, Chu-Liang Wei, Chun-Cheung Lai, Shun-Yee Liu, W.H. Chung, T. K. Ho, Hwa-Yaw Tam, S. L. Ho, A. Mccusker, J. Kam, K. Y. Lee Jan 2010

A Fiber Bragg Grating Sensor System For Train Axle Counting, Chu-Liang Wei, Chun-Cheung Lai, Shun-Yee Liu, W.H. Chung, T. K. Ho, Hwa-Yaw Tam, S. L. Ho, A. Mccusker, J. Kam, K. Y. Lee

SMART Infrastructure Facility - Papers

Railway signaling facilitates two main functions, namely, train detection and train control, in order to maintain safe separations among the trains. Track circuits are the most commonly used train detection means with the simple open/close circuit principles; and subsequent adoption of axle counters further allows the detection of trains under adverse track conditions. However, with electrification and power electronics traction drive systems, aggravated by the electromagnetic interference in the vicinity of the signaling system, railway engineers often find unstable or even faulty operations of track circuits and axle counting systems, which inevitably jeopardizes the safe operation of trains. A new …

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Co-Engineering Participatory Water Management Processes: Theory And Insights From Australian And Bulgarian Interventions, Katherine Daniell, Ian White, Nils Ferrand, Irina Ribarova, Peter Coad, Jean-Emmanuel Rougier, Matthew Hare, Natalie Jones, Albena Popova, Dominique Rollin, Pascal Perez, Stewart Burn Jan 2010

Co-Engineering Participatory Water Management Processes: Theory And Insights From Australian And Bulgarian Interventions, Katherine Daniell, Ian White, Nils Ferrand, Irina Ribarova, Peter Coad, Jean-Emmanuel Rougier, Matthew Hare, Natalie Jones, Albena Popova, Dominique Rollin, Pascal Perez, Stewart Burn

SMART Infrastructure Facility - Papers

Broad-scale, multi-governance level, participatory water management processes intended to aid collective decision making and learning are rarely initiated, designed, implemented, and managed by one person. These processes mostly emerge from some form of collective planning and organization activities because of the stakes, time, and budgets involved in their implementation. Despite the potential importance of these collective processes for managing complex water-related social–ecological systems, little research focusing on the project teams that design and organize participatory water management processes has ever been undertaken. We have begun to fill this gap by introducing and outlining the concept of a co-engineering process and …

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A Novel Control Strategy For A Variable-Speed Wind Turbine With A Permanent-Magnet Synchronous Generator, Md. Enamul Haque, Michael Negnevitsky, Kashem M. Muttaqi Jan 2010

A Novel Control Strategy For A Variable-Speed Wind Turbine With A Permanent-Magnet Synchronous Generator, Md. Enamul Haque, Michael Negnevitsky, Kashem M. Muttaqi

Faculty of Informatics - Papers (Archive)

This paper presents a novel control strategy for the operation of a direct-drive permanent-magnet synchronous-generator-based stand-alone variable-speed wind turbine. The control strategy for the generator-side converter with maximum power extraction is presented. The stand-alone control is featured with output voltage and frequency controller that is capable of handling variable load. The potential excess of power is dissipated in the dump-load resistor with the chopper control, and the dc-link voltage is maintained. Dynamic representation of dc bus and small-signal analysis are presented. Simulation results show that the controllers can extract maximum power and regulate the voltage and frequency under varying wind …

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Ontology Modeling Of Ubl Process Diagrams Using Owl, Suman Roy, Kiran Prakash Sawant, Aditya K. Ghose Jan 2010

Ontology Modeling Of Ubl Process Diagrams Using Owl, Suman Roy, Kiran Prakash Sawant, Aditya K. Ghose

Faculty of Informatics - Papers (Archive)

We present a logical framework for modeling Universal Business Language (UBL) processes. The proposed framework provides a representation of the dynamic world being modeled on the user supplied axioms about preconditions and the initial state of the world, and produces a workflow specification at a higher level of abstraction. We use the Frieghtbilling process of the UBL as a case study for our experiment. Further we extract ontology from the associated UBL document that can ensure efficient information retrieval, discovery and auditing. We use the popular semantic web formalism, Web Ontology Language (OWL) for ontology construction purposes. These domain ontologies …

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Efficient Svm Training With Reduced Weighted Samples, Son Lam Phung, Giang Hoang Nguyen, Abdesselam Bouzerdoum Jan 2010

Efficient Svm Training With Reduced Weighted Samples, Son Lam Phung, Giang Hoang Nguyen, Abdesselam Bouzerdoum

Faculty of Informatics - Papers (Archive)

This paper presents an efficient training approach for support vector machines that will improve their ability to learn from a large or imbalanced data set. Given an original training set, the proposed approach applies unsupervised learning to extract a smaller set of salient training exemplars, which are represented by weighted cluster centers and the target outputs. In subsequent supervised learning, the objective function is modified by introducing a weight for each new training sample and the corresponding penalty term. In this paper, we investigate two methods of defining the weight based on cluster vectors. The proposed SVM training is implemented …

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Fpga-Based Signal Processing In An Optical Feedback Self-Mixing Interferometry System, Zongzhen Li, Yanguang Yu, Jiangtao Xi, Huiying Ye Jan 2010

Fpga-Based Signal Processing In An Optical Feedback Self-Mixing Interferometry System, Zongzhen Li, Yanguang Yu, Jiangtao Xi, Huiying Ye

Faculty of Informatics - Papers (Archive)

Optical feedback Self-mixing Interferometry (OFSMI) can achieve a high-resolution displacement sensing and measurement by using advanced digital signal processing. However, most existing signal processing algorithms used for OFSMI signals are implemented on a PC by Matlab or other programming languages. In this case, the whole structure of OFSMI sensing system is incompact and the measurement is in low speed. The design trends in sensing systems are towarding to small size, high integration and fast real time processing. These trends require us to improve the existing OFSMI design. It is a good solution to apply Field-programmable gate arrays (FPGAs) technique onto …

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Cryptanalysis On Two Certificateless Signature Schemes, Futai Zhang, Sujuan Li, Songqin Miao, Yi Mu, Willy Susilo, Xinyi Huang Jan 2010

Cryptanalysis On Two Certificateless Signature Schemes, Futai Zhang, Sujuan Li, Songqin Miao, Yi Mu, Willy Susilo, Xinyi Huang

Faculty of Informatics - Papers (Archive)

Certificateless cryptography [1] is a new paradigm that not only removes the inherent key escrow problem of identity based public cryptography [2] (ID-PKC for short), but also eliminates the cumbersome certificate management in traditional PKI. In CL-PKC, the actual private key of a user is comprised of two secrets: a secret value and a partial private key. The user generates a secret value by himself, while the partial private key is generated by a third party called Key Generating Center (KGC), who makes use of a system wide master key and the user’s identity information. In this way, the key …

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A Survey And Tutorial Of Rfid Anti-Collision Protocols, Dheeraj K. Klair, Kwan-Wu Chin, Raad Raad Jan 2010

A Survey And Tutorial Of Rfid Anti-Collision Protocols, Dheeraj K. Klair, Kwan-Wu Chin, Raad Raad

Faculty of Informatics - Papers (Archive)

RFID technologies have revolutionized the asset tracking industry, with applications ranging from automated checkout to monitoring the medication intakes of elderlies. In all these applications, fast, and in some cases energy efficient, tag reading is desirable, especially with increasing tag numbers. In practice, tag reading protocols face many problems. A key one being tag collision, which occurs when multiple tags reply simultaneously to a reader. As a result, an RFID reader experiences low tag reading performance, and wastes valuable energy. Therefore, it is important that RFID application developers are aware of current tag reading protocols. To this end, this paper …

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Application Of Microsimulation To The Modelling Of Epidemics And Terrorist Attacks, Ian Piper, Daniel Keep, Tony Green, Ivy Zhang Jan 2010

Application Of Microsimulation To The Modelling Of Epidemics And Terrorist Attacks, Ian Piper, Daniel Keep, Tony Green, Ivy Zhang

Faculty of Informatics - Papers (Archive)

In this paper, a novel approach to behavioural modelling is presented with reference to biological infection spread in communities. Its potential application to various terrorist-related scenarios is discussed in relation to attack point simulation and interdiction simulation.

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A Family Of Asymmetric Ellis-Type Theorems, Peter Nickolas, Susan Andima, Ralph Kopperman, S Popvassilev Jan 2010

A Family Of Asymmetric Ellis-Type Theorems, Peter Nickolas, Susan Andima, Ralph Kopperman, S Popvassilev

Faculty of Informatics - Papers (Archive)

Bouziad in 1996 generalized theorems of Montgomery (1936) and Ellis (1957), to prove that every Cech complete space with a separately continuous group operation must be a topological group. We generalize these results in a new direction, by dropping the requirement that the spaces be T2 or even T1. Our theorems then become applicable to groups with asymmetric topologies, such as the group of real numbers with the upper topology, whose open sets are the open upper rays. We first show a generic Ellis-type theorem for groups with a Hausdor k-bitopological structure whose symmetrization belongs to a class of k-spaces …

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