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Articles 1231 - 1260 of 4868
Full-Text Articles in Physical Sciences and Mathematics
Intrinsically Stretchable Supercapacitors Composed Of Polypyrrole Electrodes And Highly Stretchable Gel Electrolyte, Chen Zhao, Caiyun Wang, Zhilian Yue, Kewei Shu, Gordon G. Wallace
Intrinsically Stretchable Supercapacitors Composed Of Polypyrrole Electrodes And Highly Stretchable Gel Electrolyte, Chen Zhao, Caiyun Wang, Zhilian Yue, Kewei Shu, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
There has been an emerging interest in stretchable power sources compatible with flexible/wearable electronics. Such power sources must be able to withstand large mechanical strains and still maintain function. Here we report a highly stretchable H3PO4-poly(vinyl alcohol) (PVA) polymer electrolyte obtained by optimizing the polymer molecular weight and its weight ratio to H3PO4 in terms of conductivity and mechanical properties. The electrolyte demonstrates a high conductivity of 3.4 x 10-3 S cm-1, and a high fracture strain at 410% elongation. It is mechanically robust with a tensile strength of 2 MPa and a Young's modulus of 1 MPa, and displays …
Architecture Designed Zno Hollow Microspheres With Wide-Range Visible-Light Photoresponses, Ziqi Sun, Ting Liao, Jae-Geun Kim, Kesong Liu, Lei Jiang, Jung Ho Kim, S X. Dou
Architecture Designed Zno Hollow Microspheres With Wide-Range Visible-Light Photoresponses, Ziqi Sun, Ting Liao, Jae-Geun Kim, Kesong Liu, Lei Jiang, Jung Ho Kim, S X. Dou
Australian Institute for Innovative Materials - Papers
It is a challenge to increase the visible-light photoresponses of wide-gap metal oxides. In this study, we proposed a new strategy to enhance the visible-light photoresponses of wide-gap semiconductors by deliberately designing a multi-scale nanostructure with controlled architecture. Hollow ZnO microspheres with constituent units in the shape of one-dimensional (1D) nanowire networks, 2D nanosheet stacks, and 3D mesoporous nanoball blocks are synthesized via an approach of two-step assembly, where the oligomers or the constituent nanostructures with specially designed structures are first formed, and then further assembled into complex morphologies. Through deliberate designing of constituent architectures allowing multiple visible-light scattering, reflections, …
Microwave Characterization Of Carbon Nanotube Yarns For Uwb Medical Wireless Body Area Networks, Syed Muzahir Abbas, Oya Sevimli, Michael C. Heimlich, Karu P. Esselle, B Kimiaghalam, Javad Foroughi, Farzad Safaei
Microwave Characterization Of Carbon Nanotube Yarns For Uwb Medical Wireless Body Area Networks, Syed Muzahir Abbas, Oya Sevimli, Michael C. Heimlich, Karu P. Esselle, B Kimiaghalam, Javad Foroughi, Farzad Safaei
Australian Institute for Innovative Materials - Papers
Carbon nanotube (CNT) yarns are novel CNT-based materials that extend the advantages of CNT from the nanoscale to macroscale applications. In this study, we have modeled CNT yarns as potential data transmission lines. Test structures have been designed to measure electrical properties of CNT yarns, which are attached to these test structures using gold paste. DC testing and microwave S-parameter measurements have been conducted for characterization. The observed frequency independent resistive behavior of the CNT yarn is a very promising indicator that this material, with its added values of mechanical resilience and thermal conductivity, could be invaluable for a range …
Reaction Method Control Of Impurity Scattering In C-Doped Mgb2: Proving The Role Of Defects Besides C Substitution Level, S K. Chen, K Y. Tan, A S. Halim, X Xu, K S. B De Silva, W K. Yeoh, S X. Dou, A Kursumovic, J L. Macmanus-Driscoll
Reaction Method Control Of Impurity Scattering In C-Doped Mgb2: Proving The Role Of Defects Besides C Substitution Level, S K. Chen, K Y. Tan, A S. Halim, X Xu, K S. B De Silva, W K. Yeoh, S X. Dou, A Kursumovic, J L. Macmanus-Driscoll
Australian Institute for Innovative Materials - Papers
In this study, Si and C were incorporated into polycrystalline MgB2 via in situ reaction of Mg and B with either SiC or with separate Si and C (Si+C). The electrical transport and magnetic properties of the two series of samples were compared. The corrected resistivity at 40K, pA(40K), is higher for the SiC reacted samples regardless of carbon (C) substitution level, indicating larger intragrain scattering because of the simultaneous reaction between Mg and SiC and carbon substitution during the formation of MgB2. In addition, because of the cleaner reaction route for the SiC reacted samples, the calculated active area …
Pdni Hollow Nanoparticles For Improved Electrocatalytic Oxygen Reduction In Alkaline Environments, Meng Wang, Weimin Zhang, Jiazhao Wang, David Wexler, Simon D. Poynton, Robert C.T Slade, Hua-Kun Liu, Bjorn Winther-Jensen, Robert Kerr, Dongqi Shi, Jun Chen
Pdni Hollow Nanoparticles For Improved Electrocatalytic Oxygen Reduction In Alkaline Environments, Meng Wang, Weimin Zhang, Jiazhao Wang, David Wexler, Simon D. Poynton, Robert C.T Slade, Hua-Kun Liu, Bjorn Winther-Jensen, Robert Kerr, Dongqi Shi, Jun Chen
Australian Institute for Innovative Materials - Papers
Palladium-Nickel (Pd-Ni) hollow nanoparticles were synthesized via a modified galvanic replacement method using Ni nanoparticles as sacrificial templates in an aqueous medium. X-ray diffraction and transmission electron microscopy show that the as-synthesized nanoparticles are alloyed nanostructures and have hollow interiors with an average particle size of 30 nm and shell thickness of 5 nm. Compared with the commercially available Pt/C or Pd/C catalysts, the synthesized PdNi/C has superior electrocatalytic performance towards the oxygen reduction reaction, which makes it a promising electrocatalyst for alkaline anion exchange membrane fuel cells and alkali-based air-batteries. The electrocatalyst is finally examined in an H2/O2 alkaline …
Porous Titania Nanosheet/Nanoparticle Hybrids As Photoanodes For Dye-Sensitized Solar Cells, Yang Bai, Zheng Xing, Hua Yu, Zhen Li, Rose Amal, Lianzhou Wang
Porous Titania Nanosheet/Nanoparticle Hybrids As Photoanodes For Dye-Sensitized Solar Cells, Yang Bai, Zheng Xing, Hua Yu, Zhen Li, Rose Amal, Lianzhou Wang
Australian Institute for Innovative Materials - Papers
Porous titania nanohybrids (NHs) were successfully prepared by hybridizing the exfoliated titania nanosheets with anatase TiO2 nanoparticles. Various characterizations revealed that the titania NHs as photoanodes play a trifunctional role (light harvesting, dye adsorption, and electron transfer) in improving the efficiency (η) of the dye-sensitized solar cells. The optimized photoanode consisting layered NHs demonstrated a high overall conversion efficiency of 10.1%, remarkably enhanced by 29.5% compared to that (7.8%) obtained from the benchmark P25 nanoparticles under the same testing conditions.
Critical Behaviour Of Ho2fe17-Xmnx-Magnetisation And Mössbauer Spectroscopy, Jianli Wang, S J. Campbell, S J. Kennedy, S X. Dou
Critical Behaviour Of Ho2fe17-Xmnx-Magnetisation And Mössbauer Spectroscopy, Jianli Wang, S J. Campbell, S J. Kennedy, S X. Dou
Australian Institute for Innovative Materials - Papers
The magnetic properties of Ho2Fe17 − xMnx compounds (x = 0–2) of ferromagnetic ordering temperatures up to TC ~344 K have been investigated by DC magnetization and Mössbauer effect measurements. The nature of the magnetic phase transitions and the critical behaviour around TC has been investigated by analysis of the magnetisation data and the critical exponents β, γ and δ determined. The critical exponents are found to be similar to the theoretical values of the mean-field model for which β = 0.5 and γ = 1.0, indicating the existence of a long-range ferromagnetic interactions. The isothermal entropy changes ΔS around …
Thz Photomixer With A 40-Nm-Wide Nanoelectrode Gap On Low-Temperature Grown Gaas, G Seniutinas, G Gervinskas, E Constable, A Krotkus, G Molis, G Valusis, Roger A. Lewis, S Juodkazis
Thz Photomixer With A 40-Nm-Wide Nanoelectrode Gap On Low-Temperature Grown Gaas, G Seniutinas, G Gervinskas, E Constable, A Krotkus, G Molis, G Valusis, Roger A. Lewis, S Juodkazis
Australian Institute for Innovative Materials - Papers
A terahertz (THz or T-rays) photomixer consisting of a meander type antenna with integrated nanoelectrodes on a low temperature grown GaAs (LT-GaAs) is demonstrated. The antenna was designed for molecular fingerprinting and sensing applications within a spectral range of 0.3-0.4 THz. A combination of electron beam lithography (EBL) and focused ion beam (FIB) milling was used to fabricate the T-ray emitter. Antenna and nanoelectrodes were fabricated by standard EBL and lift-off steps. Then a 40-nm-wide gap in an active photomixer area separating the nanoelectrodes was milled by a FIB. The integrated nano-contacts with nano-gaps enhance the illuminated light and THz …
Multifunctional Conducting Polymer Fibres For Drug Delivery Applications, Dorna Esrafilzadeh, Simon E. Moulton, Joselito M. Razal, Elise M. Stewart, Gordon G. Wallace
Multifunctional Conducting Polymer Fibres For Drug Delivery Applications, Dorna Esrafilzadeh, Simon E. Moulton, Joselito M. Razal, Elise M. Stewart, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
Advances in the fabrication of neuroprosthetic electrodes have attracted considerable interest from biomedical researchers. These electrodes are incorporated into a neuroprosthetic device capable of, electrically stimulating and recording of neuron activity. Critical to the successful application of these electrodes is their biocompatibility, stable conductivity, lower impedance and flexibility whilst maintaining appropriate mechanical properties [1] .
Hybrid Agent Based Simulation With Adaptive Learning Of Travel Mode Choices For University Commuters (Wip), Nagesh Shukla, Albert Munoz, Jun Ma, Nam Huynh
Hybrid Agent Based Simulation With Adaptive Learning Of Travel Mode Choices For University Commuters (Wip), Nagesh Shukla, Albert Munoz, Jun Ma, Nam Huynh
SMART Infrastructure Facility - Papers
This paper presents a methodology for developing a hybrid agent-based micro-simulation model to capture the impacts of commuter travel mode choices on a University campus transport network. The proposed methodology involves: (i) developing realistic population of commuter agents (students and staff); (ii) assigning activity lists and travel mode choices to agents using machine learning method; and, (iii) traffic micro-simulation of the study area transport network. This furthers the understanding of current transport modal distributions, factors affecting the travel mode choice decisions, and, network performance through a number of hypothetical travel scenarios.
Next Generation Mdm-The New 360 View, Joe Minervini, Craig Napier
Next Generation Mdm-The New 360 View, Joe Minervini, Craig Napier
SMART Infrastructure Facility - Papers
If your priority is to establish best in class customer-centricity principles in your business, then please join us for a review of how relationship centric MDM is the newest and most effective way to take command of your customer data and deliver business value faster. In this session you will hear how Pitney Bowes Software is assisting the University of Wollongong in expanding their vision of using Information Management to improve research outcomes, commercial partnerships and student learning experiences. This session will examine the: • Utilisation of Master Data principles and Relationship Analysis in understanding and exploring the current state …
N-Nitrosamine Rejection By Reverse Osmosis Membranes: A Full-Scale Study, Takahiro Fujioka, Stuart J. Khan, James A. Mcdonald, Annalie Roux, Yvan Poussade, Jorg E. Drewes, Long D. Nghiem
N-Nitrosamine Rejection By Reverse Osmosis Membranes: A Full-Scale Study, Takahiro Fujioka, Stuart J. Khan, James A. Mcdonald, Annalie Roux, Yvan Poussade, Jorg E. Drewes, Long D. Nghiem
SMART Infrastructure Facility - Papers
This study aims to provide longitudinal and spatial insights to the rejection of N-nitrosamines by reverse osmosis (RO) membranes during sampling campaigns at three full-scale water recycling plants. Samples were collected at all individual filtration stages as well as at a cool and a warm weather period to elucidate the impact of recovery and feed temperature on the rejection of N-nitrosamines. N-nitrosodimethylamine (NDMA) was detected in all RO feed samples varying between 7 and 32 ng/L. Concentrations of most other N-nitrosamines in the feed solutions were determined to be lower than their detection limits (3e5 ng/L) but higher concentrations were …
Improved Decision Making To Underpin The Achievement Of Strategic Goals At The University Of Wollongong, Craig Napier
Improved Decision Making To Underpin The Achievement Of Strategic Goals At The University Of Wollongong, Craig Napier
SMART Infrastructure Facility - Papers
The Higher Education sector is an increasingly competitive environment. As such, it is prudent for institutions to seek advantages across all areas that will lead to improved research outcomes, commercial partnerships and student learning experience. The Performance Indicators Unit commenced in 1999 and has evolved to cover seven key perspectives of integration of Information Management across the University, working to avoid the operational silos that can occur within Universities. This session will explore: Utilising network relationship analysis to develop an understanding of the University of Wollongong's collaborations and facilitate improvement The importance of visualisation to translate data into meaningful information …
Modelling And Data Frameworks For Understanding Infrastructure Systems Throuh A Systems-Of-Systems Lens, Matthew J. Berryman, Rohan Wickramasuriya, Vu Lam Cao, Pascal Perez
Modelling And Data Frameworks For Understanding Infrastructure Systems Throuh A Systems-Of-Systems Lens, Matthew J. Berryman, Rohan Wickramasuriya, Vu Lam Cao, Pascal Perez
SMART Infrastructure Facility - Papers
Modelling and analysis of large systems of infrastructure systems carries with it a number of challenges, in particular around the volume of data and the requisite complexity (and thus computing resources required) of models. In this paper we present an integrated land use–transportation model of a region in Sydney, and detail how we integrated an agent-based model of location and transport choice with a traffic micro-simulator. We also discuss both some novel architectures for scalability of modelling as well as for fusion and relevant visualisation of large data sets. We have a particular focus on geospatial infrastructure data visualisation.
A Semi-Deterministic Approach For Modelling Of Urban Travel Demand, Nam N. Huynh, Nagesh Shukla, Albert Munoz Aneiros, Vu Lam Cao, Pascal Perez
A Semi-Deterministic Approach For Modelling Of Urban Travel Demand, Nam N. Huynh, Nagesh Shukla, Albert Munoz Aneiros, Vu Lam Cao, Pascal Perez
SMART Infrastructure Facility - Papers
This paper presents a methodology to construct travel related activity schedules for individuals in a synthetic population. The resulting list of activity schedules are designed as an input into a micro-simulator for urban transport dynamics analysis. The methodology involves two main steps. The first step generates a synthetic population based on census data sourced from the Australian Bureau of Statistics (ABS). The second step assigns individuals in the synthetic population activity schedules using Household Travel Survey (HTS) data related to the geographical area of interest (in this case, the Sydney Greater Metropolitan area). Each individual is assigned an ordered set …
Scene-Adaptive Configuration Of Two Cameras Using The Correspondence Field Function, F Safaei, Payam Mokhtarian, H Shidanshidi, W Li, Mohammad-Reza Namazi-Rad, A Mousavinia
Scene-Adaptive Configuration Of Two Cameras Using The Correspondence Field Function, F Safaei, Payam Mokhtarian, H Shidanshidi, W Li, Mohammad-Reza Namazi-Rad, A Mousavinia
SMART Infrastructure Facility - Papers
In a free viewpoint video system, the scene is captured by a number of cameras and it would be desirable to optimize the configuration of cameras, such as their location or orientation, to improve the rendering quality. This paper introduces a mathematical representation of the multi-camera geometry, called the correspondence field (CF), which can be used to quantify the suitability of a camera configuration for a given arrangement of objects in the scene. The correspondence field describes the spatial topology of the intersecting rays of cameras, arranged as a number of layers or surfaces in the field of view of …
Ten Trenches: A Scienceart Collaboration, Timothy J. Cohen, Martin Cohen, Stephanie Kermode, Michael G. Leggett
Ten Trenches: A Scienceart Collaboration, Timothy J. Cohen, Martin Cohen, Stephanie Kermode, Michael G. Leggett
Faculty of Science - Papers (Archive)
Collaborative and cross-disciplinary research by a group of artists and scientists in an Australian rural setting generates data and ideas that form the basis of a wider understanding of the ramifications of global warming and cooling within the local, regional and national community. The work is viewed as an initial educational platform that will allow the public to see and understand the complexities of climate-based research.
Punctuality Improvement In Australian Rail Freight Network By Transit Time Management, Hadi Ghaderi, Mohammad-Reza Namazi-Rad, Payam Mokhtarian, Jingang Fei, Stephen Cahoon, Tin Kin Ho
Punctuality Improvement In Australian Rail Freight Network By Transit Time Management, Hadi Ghaderi, Mohammad-Reza Namazi-Rad, Payam Mokhtarian, Jingang Fei, Stephen Cahoon, Tin Kin Ho
SMART Infrastructure Facility - Papers
With rapid development in product globalization and just-in-time production over the last two decades, area-specific reliable, responsive and customer-oriented rail freight services are in demand and are of increasing interest. Having a proper understanding of underlying factors in the evaluation of the quality of rail freight services is a key challenge in the short-term and long-term regional and metropolitan freight mobility planning, particularly within the context of a competitive rail freight market as in Australia. Among the fundamental attributes of rail freight services, transit time and reliability/punctuality are of utmost importance, which also tend to be inevitably correlated. This paper …
Polypyrrole As Cathode Materials For Zn-Polymer Battery With Various Biocompatible Aqueous Electrolytes, Sha Li, Irin Sultana, Zaiping Guo, Caiyun Wang, G G. Wallace, Hua-Kun Liu
Polypyrrole As Cathode Materials For Zn-Polymer Battery With Various Biocompatible Aqueous Electrolytes, Sha Li, Irin Sultana, Zaiping Guo, Caiyun Wang, G G. Wallace, Hua-Kun Liu
Australian Institute for Innovative Materials - Papers
Polypyrrole films doped with p-toluenesulfonic anions on stainless steel mesh substrates were prepared by the electropolymerization method. A Zn/aqueous solution/polymer battery system was thus established with the polymer film as the cathode and three different biocompatible aqueous electrolytes. The mechanism of the anode reaction can be explained as the dissolution of Zn. It was found, however, that the discharge performance, including the discharge plateaus and capacities, were significantly affected by the polymer reactions. To elucidate the reaction mechanisms of the conductive polymer, its electrochemical properties were systematically studied by several techniques, including cyclic voltammetry, electrochemical impedance spectroscopy, and monitoring mass …
Colour Tunable Electrochromic Devices Based On Pprodot-(Hx)2 And Pprodot-(Ethx)2 Polymers, Bo Weng, Syed Ashraf, Peter C. Innis, Gordon G. Wallace
Colour Tunable Electrochromic Devices Based On Pprodot-(Hx)2 And Pprodot-(Ethx)2 Polymers, Bo Weng, Syed Ashraf, Peter C. Innis, Gordon G. Wallace
Australian Institute for Innovative Materials - Papers
The most commonly used method to tune the colour transition states of an ECD is to modify the chemical structure of the electrochromic polymers to achieve the desired transparent to dark state switching colours. However, this approach can present significant synthetic challenges that typically result in a compromise in device performance parameters such as contrast range or stability as well as solvent processability. In this study we have investigated tuning the dark-state colour of an ECD (at +0.8 V) by solution mixing poly(3,3-dihexyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine) (PProDOT-(Hx)2), which has an excellent contrast performance but with an esthetically undesirable purple colour transition, with poly(3,3-bis(2-ethylhexyl)-3,4-dihydro-2H-thieno …
Removal Of Na+ From Ionic Liquids By Zeolite For High Quality Electrolyte Manufacture, Won-Je Cho, Yongseong Seo, Soon Jae Jung, Won-Gil Lee, Byung Chul Kim, Grant A. Mathieson, Kook Hyun Yu
Removal Of Na+ From Ionic Liquids By Zeolite For High Quality Electrolyte Manufacture, Won-Je Cho, Yongseong Seo, Soon Jae Jung, Won-Gil Lee, Byung Chul Kim, Grant A. Mathieson, Kook Hyun Yu
Australian Institute for Innovative Materials - Papers
This study develops a novel method to remove the free cations created during the synthesis of ionic liquid. The cations are removed from the ionic liquid by size-selective adsorption onto chemically surface-modified Zeolite. The porous crystal nano-structure of Zeolite has several electron-rich Al sites to attract cations. While large cations of an ionic liquid cannot access the Zeolite nano-structure, small cations like Na+ have ready access and are adsorbed. This study confirms that: Na+ can be removed from ionic liquid effectively using Zeolite; and, in contrast to the conventional and extensively applied ion exchange resin method or solvent extraction methods, …
Induced Pluripotent Stem Cells As Tools For Disease Modelling And Drug Discovery In Alzheimer's Disease, Lezanne Ooi, Kuldip Sidhu, Anne Poljak, Greg Sutherland, Michael D. O'Connor, Perminder Sachdev, Gerald Munch
Induced Pluripotent Stem Cells As Tools For Disease Modelling And Drug Discovery In Alzheimer's Disease, Lezanne Ooi, Kuldip Sidhu, Anne Poljak, Greg Sutherland, Michael D. O'Connor, Perminder Sachdev, Gerald Munch
Faculty of Science - Papers (Archive)
Alzheimer’s disease (AD) is a progressive neurodegenerative brain disorder that leads to a progressive decline in a person’s memory and ability to communicate and carry out daily activities. The brain pathology in AD is characterized by extensive neuronal loss, particularly of cholinergic neurons, intracellular neurofibrillary tangles composed of the tau protein (NFTs) and extracellular deposition of plaques composed of β-amyloid (Aβ), a cleavage product of the amyloid precursor protein (APP). These two insoluble protein aggregates are accompanied by a chronic inflammatory response and extensive oxidative damage. Whereas dys-regulation of APP expression or processing appears to be important for the familial, …
A Reagentless Thermal Post-Synthetic Rearrangement Of An Allyloxy-Tagged Metal-Organic Framework, Andrew D. Burrows, Sally O. Hunter, Mary F. Mahon, Christopher Richardson
A Reagentless Thermal Post-Synthetic Rearrangement Of An Allyloxy-Tagged Metal-Organic Framework, Andrew D. Burrows, Sally O. Hunter, Mary F. Mahon, Christopher Richardson
Faculty of Science - Papers (Archive)
Direct heating of a metal-organic framework provides a simple, controllable way of effecting a covalent post-synthetic modification. Herein we report that an allyloxy-tagged zinc metal-organic framework undergoes a thermally-promoted aromatic Claisen rearrangement through which the framework connectivity and porosity are maintained.
Data-Driven Modeling And Analysis Of Household Travel Mode Choice, Nagesh Shukla, Jun Ma, Rohan Wickramasuriya Denagamage, Nam N. Huynh
Data-Driven Modeling And Analysis Of Household Travel Mode Choice, Nagesh Shukla, Jun Ma, Rohan Wickramasuriya Denagamage, Nam N. Huynh
SMART Infrastructure Facility - Papers
One of the important problems studied in the area of travel behavior analysis is travel mode choice which is one of the four crucial steps in transportation demand estimation for urban planning. State of the art models in travel demand modelling can be classified as trip based; tour based; and activity based. In trip based approach, each individual trips is modelled as independent and isolated trips i.e. no connections between different trips. In tour based approach, trips that start and end from the same location (home, work, etc) and trips within a tour are dependent on each other. In past …
An Original Synthetic Population Tool Applied To Belgian Case: Virtualbelgium, Eric Cornelis, Laurie Hollaert, Johan Barthelemy, Philippe L. Toint
An Original Synthetic Population Tool Applied To Belgian Case: Virtualbelgium, Eric Cornelis, Laurie Hollaert, Johan Barthelemy, Philippe L. Toint
SMART Infrastructure Facility - Papers
A new tool for building synthetic populations, alleviating the drawbacks of classical methods, is presented. It creates both individuals and households at a quite disaggregated spatial level and simulates the temporal evolution of the built synthetic population.VirtualBelgium, this new tool, is applied on the Belgian case and is coupled with multi-agents models for simulating mobility behaviours.
Reliability-Based Modeling Of Park-And-Ride Service On Linear Travel Corridor, David Wang, Bo Du
Reliability-Based Modeling Of Park-And-Ride Service On Linear Travel Corridor, David Wang, Bo Du
SMART Infrastructure Facility - Papers
The modeling of multimodal choice in a railway-highway system with single park-and-ride service on a linear travel corridor is studied. Commuters choose either auto or railway to travel directly from home to city center or drive to the park-and-ride facility and transfer to railway transit service. Both the traffic congestion on the highway and the crowding on rail transit are considered. The highway capacity is assumed to be stochastic to take into account travel time reliability for use of the auto mode. Commuters are assumed to be distributed uniformly along the corridor. A linear complementarity system to model commuters' mode …
A Critique Of The Productivity Commissions Cost Benefit, Mark D. Harrison
A Critique Of The Productivity Commissions Cost Benefit, Mark D. Harrison
SMART Infrastructure Facility - Papers
In its 2011 NDIS report, the Productivity Commission rationalises its policy recommendation by means of a cost-benefit analysis, claiming that ‘the benefits of the [National Disability Insurance] scheme would significantly outweigh the costs’. But methodology the PC adopts departs from conventional cost-benefit analysis in ways that understates costs, presumes the benefits, muddies policy comparisons, and jumbles equity and efficiency issues. These problems are traceable to the Commission’s use of a ‘distributional weights approach’ to equity benefits. The ‘basic needs approach’ is an alternative way of dealing with equity considerations that better captures the underlying preferences of citizens and the rationale …
Adapting Geospatial Business Intelligence For Regional Infrastructure Planning, Rohan C. Wickramasuriya Denagamage, Pascal Perez, Jun Ma, Matthew J. Berryman
Adapting Geospatial Business Intelligence For Regional Infrastructure Planning, Rohan C. Wickramasuriya Denagamage, Pascal Perez, Jun Ma, Matthew J. Berryman
SMART Infrastructure Facility - Papers
Business Intelligence (BI) has traditionally been used in organizations as a strategic tool to maximize profit. When coupled with Geographic Information Systems, however, BI can be transformed into a cutting edge decision support system for planning local and regional areas, as we demonstrate in this paper. Local and regional governments often face a major challenge in terms of developing a holistic view upon disjointedly operated utility services in their jurisdictions due to data silos. This limitation has become a serious impediment to infrastructure planning and regional adaptation to changes. Geo-BI provides tools to manage data coming from multiple and disparate …
Why Johnny Can't Regulate: The Case Of Natural Monopoly, Henry Ergas
Why Johnny Can't Regulate: The Case Of Natural Monopoly, Henry Ergas
SMART Infrastructure Facility - Papers
This paper examines the difficulties inherent in regulation as a solution to market failure and, especially, to natural monopoly. It highlights the way regulation itself introduces new risks into the supply of natural monopoly services, including the risk of regulatory opportunism, and argues that delegating regulatory functions to ‘independent’ regulators does not in itself solve those risks.
A Novel Approach To Data Deduplication Over The Engineering-Oriented Cloud Systems, Zhe Sun, Jun Shen, Jianming Young
A Novel Approach To Data Deduplication Over The Engineering-Oriented Cloud Systems, Zhe Sun, Jun Shen, Jianming Young
Faculty of Informatics - Papers (Archive)
This paper presents a duplication-less storage system over the engineering-oriented cloud computing platforms. Our deduplication storage system, which manages data and duplication over the cloud system, consists of two major components, a front-end deduplication application and a mass storage system as back-end. Hadoop distributed file system (HDFS) is a common distribution file system on the cloud, which is used with Hadoop database (HBase). We use HDFS to build up a mass storage system and employ HBase to build up a fast indexing system. With a deduplication application, a scalable and parallel deduplicated cloud storage system can be effectively built up. …