Smart Superconducting Grid,
2014
University of Oslo
Smart Superconducting Grid, Pavlo Mikheenko, Tom H. Johansen
Faculty of Engineering and Information Sciences - Papers: Part A
Smart superconducting grid is a global network for CO2 emissions-free renewable energy economy. The grid combines delivery of liquid hydrogen and electrical energy via superconducting pipelines. The paper reviews the development of the grid concept and the efforts in material science and engineering advancing its practical implementation. Original results are presented outlining an activity that targets the challenge of joining sections of pipelines, as well as manufacture of superconducting pipes. The focus is put on testing the quality of superconducting MgB2 joints and coatings using the magnetic flux visualization technique of magneto-optical imaging.
Rejection Of Small Solutes By Reverse Osmosis Membranes For Water Reuse Applications: A Pilot-Scale Study,
2014
University of Wollongong
Rejection Of Small Solutes By Reverse Osmosis Membranes For Water Reuse Applications: A Pilot-Scale Study, Takahiro Fujioka, Kha L. Tu, Stuart J. Khan, James A. Mcdonald, Annalie Roux, Yvan Poussade, Jörg E. Drewes, Long D. Nghiem
Faculty of Engineering and Information Sciences - Papers: Part A
N-nitrosamines and boron are small solutes of particular concern during water recycling applications. Here, we evaluated the rejection of seven N-nitrosamines and boron under a range of operating conditions and feed solution characteristics. The evaluationwas conducted using a pilot-scale reverse osmosis (RO) system to appropriately simulate hydrodynamic conditions of full-scale RO installations. The rejection of seven N-nitrosamines by the pilot RO system varied significantly in the range from 31 to 94%, and rejection increased in the increasing order of their molecular weight. Rejection values obtained from this pilot-scale study were lower than those previously reported in laboratory-scale studies. These discrepancieswere …
Molecular Dynamics Simulation On Σ5 Grain Boundaries Of Copper Bicrystal Under Tensile And Shear Deformation,
2014
University of Wollongong
Molecular Dynamics Simulation On Σ5 Grain Boundaries Of Copper Bicrystal Under Tensile And Shear Deformation, Liang Zhang, Cheng Lu, A Kiet Tieu
Faculty of Engineering and Information Sciences - Papers: Part A
Molecular Dynamics simulation are employed to investigate the structures and mechanical behavior of both symmetric and asymmetric Σ5[0 0 1] tilt grain boundaries (GBs) of copper bicrystal under uniaxial tension and shear deformation. Simulation results indicate that the Σ5 asymmetric GBs can facet into their corresponding symmetric GB structures. The maximum tensile stress of symmetric GBs is higher than the asymmetric ones at both 10 K and 300 K, which suggests the symmetric GBs may have a more stable boundary structures. All the Σ5 GBs investigate in this study can migrate under the shear deformation with different velocity. The migration …
System Implementation Of Self-Mixing Interferometry Technique-Based Measurement On Young's Modulus,
2014
University of Wollongong
System Implementation Of Self-Mixing Interferometry Technique-Based Measurement On Young's Modulus, Ke Lin, Yanguang Yu, Zhenghao Liu, Jiangtao Xi, Huijun Li, Cuiling Liu
Faculty of Engineering and Information Sciences - Papers: Part A
Young's modulus (denoted by E) is an intrinsic and valuable quantity for appropriate estimation of material performance. E can be obtained from the resonant frequency from the vibration of the tested material sample excited by the external forces. In this paper, we present a system design for determining the parameter by using an optical feedback self-mixing interferometry (OFSMI) system. An OFSMI system consists of a laser diode (LD), a micro-lens and an external target. The material sample to be tested is used as the external target. The vibration of the sample causes the variation of the length of the external …
Decoding Student Satisfaction: How To Manage And Improve The Laboratory Experience,
2014
University of Wollongong
Decoding Student Satisfaction: How To Manage And Improve The Laboratory Experience, Sasha Nikolic, Christian H. Ritz, Peter J. Vial, Montserrat Ros, David Stirling
Faculty of Engineering and Information Sciences - Papers: Part A
The laboratory plays an important role in teaching engineering skills. An Electrical Engineering department at an Australian University implemented a reform to monitor and improve student satisfaction with the teaching laboratories. A Laboratory Manager was employed to oversee the quality of 27 courses containing instructional laboratories. Student satisfaction surveys were carried out on all relevant laboratories every year, and the data were used for continuous improvement. This paper will investigate the reforms that were implemented and outline a number of the improvements made. It also examines the program's overall impact on: 1) overall satisfaction; 2) laboratory notes; 3) learning experiences; …
Training Laboratory: Using Online Resources To Enhance The Laboratory Learning Experience,
2014
University of Wollongong
Training Laboratory: Using Online Resources To Enhance The Laboratory Learning Experience, Sasha Nikolic
Faculty of Engineering and Information Sciences - Papers: Part A
2014 IEEE. Technology has enabled students to search and utilize information from a diverse range of sources. One mechanism that students turn to for additional resources is the internet. This paper explores student interaction with an internet resource, called the Training Laboratory. This resource has multiple uses, including: 1) the training of laboratory teaching assistants; 2) providing students an opportunity to develop pre-requisite laboratory skills; 3) reduce the workload of developing resources when designing laboratory notes; 4) reduce the duplication of learning fundamental laboratory skills in multiple subjects; 5) provide a means to share resources to satellite campuses; and, 6) …
Affine-Invariant Scene Categorization,
2014
University of Wollongong
Affine-Invariant Scene Categorization, Xue Wei, Son Lam Phung, Abdesselam Bouzerdoum
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents a scene categorization method that is invariant to affine transformations. We propose a new moment-based normalization algorithm to generate an output image that is independent of the position, rotation, shear, and scale of the input image. In the proposed approach, an affine transform matrix is determined subject to the normalized image satisfying a set of moment constraints. After image normalization, a dense set of local features is extracted using scattering transform, and the global features are then formed via a sparse coding method. We evaluate the proposed method and other state-of-the-art algorithms on a benchmark dataset. The …
Combinatorial Approach Using Wavelet Analysis And Artificial Neural Network For Short-Term Load Forecasting,
2014
University of Wollongong
Combinatorial Approach Using Wavelet Analysis And Artificial Neural Network For Short-Term Load Forecasting, Dao Hoang Vu, Kashem M. Muttaqi, Ashish P. Agalgaonkar
Faculty of Engineering and Information Sciences - Papers: Part A
Short term load forecasting is critically important in modern electricity networks since it helps provide supportive information for reliable power system operation in competitive electricity market environment. In this paper, the wavelet analysis based neural network model is employed to forecast the electricity demand in short-term period. The wavelet analysis helps to decompose the electricity demand data into different frequency bands. The Fourier transform is then employed to reveal the significant lags of these decomposed components. These lags are then used as inputs of neural network model to forecast the future values of each decomposed component. Finally, the forecasted components …
Packet Loss Protection For Interactive Speech Object Rendering: A Multiple Description Approach,
2014
University of Wollongong
Packet Loss Protection For Interactive Speech Object Rendering: A Multiple Description Approach, Xiguang Zheng, Christian H. Ritz
Faculty of Engineering and Information Sciences - Papers: Part A
2014 IEEE. This paper investigates the application of novel packet loss protection schemes to compress mixtures of speech sources for interactive real-time audio services such as spatial teleconferencing. Hybrid Forward Error Correction (FEC) and Multiple Description Coding (MDC) packet loss protection techniques are applied to the outputs of a psychoacoustic-based Analysis-By-Synthesis (PABS) coder designed for such applications. The protection approaches split the coder outputs into two descriptions that are separately protected using the hybrid FEC-MDC techniques. Perceptual Evaluation of Speech Quality (PESQ) measurements compare the performance of different protection schemes for a range of typical packet loss conditions. Results indicate …
Assessing The Influence Of Climatic Variables On Electricity Demand,
2014
University of Wollongong
Assessing The Influence Of Climatic Variables On Electricity Demand, Dao Hoang Vu, Kashem M. Muttaqi, Ashish P. Agalgaonkar
Faculty of Engineering and Information Sciences - Papers: Part A
The electricity demand is significantly dependent on the weather information. Such weather information is comprised of different climatic variables such as temperature, humidity, wind speed, evaporation, rain fall and solar exposure which constantly change. Therefore, analysing the impacts of these variables on demand is necessary for predicting the future change in demand. In this paper, the cooling and heating degree days are utilised to capture the relationship between the per capita demand to temperature, which is one of the key climatic variables. In addition, Pearson correlation analysis has been employed to investigate the interdependency between different climatic variables and electricity …
Multi-Objective Ant Colony System For Data-Intensive Service Provision,
2014
University of Wollongong
Multi-Objective Ant Colony System For Data-Intensive Service Provision, Lijuan Wang, Jun Shen, Junzhou Luo
Faculty of Engineering and Information Sciences - Papers: Part A
Data-intensive services have become one of the most challenging applications in cloud computing. The classical service composition problem will face new challenges as the services and correspondent data grow. A typical environment is the large scale scientific project AMS, which we are processing huge amount of data streams. In this paper, we will resolve service composition problem by considering the multi-objective data-intensive features. We propose to apply ant colony optimization algorithms and implemented them with simulated workflows in different scenarios. To evaluate the proposed algorithm, we compared it with a multi-objective genetic algorithm with respect to five performance metrics
Managing Maintenance Resources For Efficient Asset Utilization,
2014
University of Wollongong
Managing Maintenance Resources For Efficient Asset Utilization, Winda Nur Cahyo, Khaled O. El-Akruti, Richard Dwight, Tieling Zhang
Faculty of Engineering and Information Sciences - Papers: Part A
Asset productivity is concerned with how an asset is efficiently and effectively deployed and utilized. It is related to maintenance resource management. The purpose of this paper is to discuss development of policies for managing integrated maintenance resources. These resources include human resource and supporting material required to perform maintenance activities for a complex maintenance system. Here, human resource management encompasses policy for recruitment, training, and outsourcing. Meanwhile, supporting material management includes policy for parts purchasing and inventory. Good asset productivity can be achieved by attaining a better performance of the asset using the same amount of maintenance resources or …
A Tool To Investigate The Status Of Engineering Asset Management In Organizations,
2014
University of Wollongong
A Tool To Investigate The Status Of Engineering Asset Management In Organizations, Khaled O. El-Akruti, Tieling Zhang, Richard Dwight
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents a framework which addresses a series of activities defined in Engineering Asset Management (EAM). This framework is proposed to serve as a guideline of organizations when investigating if the status of the EAM system that they have in place is adequate to achieve the intended objectives. It also serves as a guide for researchers in EAM. The framework ensures a holistic approach to EAM in place that it explores the required asset management activities, relationships and mechanisms for achieving the organizational goals. In order to demonstrate the framework, a ‘retroductive’ approach in the context of case study …
Temporal And Parametric Study Of Traveller Preference Heterogeneity Using Random Parameter Logit Model,
2014
University of Wollongong
Temporal And Parametric Study Of Traveller Preference Heterogeneity Using Random Parameter Logit Model, Ahm Mehbub Anwar, A Kiet Tieu, Peter Gibson, Matthew J. Berryman, Khin Than Win, Andrew Mccusker, Pascal Perez
Faculty of Engineering and Information Sciences - Papers: Part A
No abstract provided.
Eeg-Based Brain-Computer Interface For Automating Home Appliances,
2014
Tafila Tecnical University
Eeg-Based Brain-Computer Interface For Automating Home Appliances, Abdel Ilah N. Alshbatat, Peter J. Vial, Prashan Premaratne, Le Chung Tran
Faculty of Engineering and Information Sciences - Papers: Part A
An EEG-based brain-computer system for automating home appliances is proposed in this study. Brain-computer interface (BCI) system provides direct pathway between human brain and external computing resources or external devices. The system translates thought into action without using muscles through a number of electrodes attached to the user's scalp. The BCI technology can be used by disabled people to improve their independence and maximize their capabilities at home. In this paper, a novel BCI system was developed to control home appliances from a dedicated Graphical User Interface (GUI). The system is structured with six units: EMOTIV EPOC headset, personal computer, …
Influence Of Polarization And A Source Model For Dose Calculation In Mrt,
2014
The Institute of Cancer Research, Uk
Influence Of Polarization And A Source Model For Dose Calculation In Mrt, Stefan Bartzsch, Michael Lerch, Marco Petasecca, Elke Brauer-Krisch, Uwe Oelfke
Faculty of Engineering and Information Sciences - Papers: Part A
Purpose: Microbeam Radiation Therapy (MRT), an alternative preclinical treatment strategy using spatially modulated synchrotron radiation on a micrometer scale, has the great potential to cure malignant tumors (e.g., brain tumors) while having low side effects on normal tissue. Dose measurement and calculation in MRT is challenging because of the spatial accuracy required and the arising high dose differences. Dose calculation with Monte Carlo simulations is time consuming and their accuracy is still a matter of debate. In particular, the influence of photon polarization has been discussed in the literature. Moreover, it is controversial whether a complete knowledge of phase space …
Mitigation Of Landslide Impacts, Strategies And Challenges For The 21st Century,
2014
University of Wollongong
Mitigation Of Landslide Impacts, Strategies And Challenges For The 21st Century, Robin Chowdhury, Phil Flentje
Faculty of Engineering and Information Sciences - Papers: Part A
Reliable methods for mitigation of landslide impacts must be based on the latest developments in knowledge and advanced methods of analysis and synthesis. An interdisciplinary approach is essential for effective solutions to landslide problems. Prevention or mitigation of landslide disasters requires understanding the factors which often lead to catastrophic landsliding and the simulation of conditions under which such failures may occur. The analysis of rainfall-triggered landsliding in saturated soils requires a proper understanding of how the factor of safety decreases with increase in pore water pressure. On the other hand, for landsliding in unsaturated soils it is necessary to understand …
Time Spent On Daytime Direct Care Activities By Personal Carers In Two Australian Residential Aged Care Facilities: A Time-Motion Study,
2014
University of Wollongong
Time Spent On Daytime Direct Care Activities By Personal Carers In Two Australian Residential Aged Care Facilities: A Time-Motion Study, Siyu Qian, Ping Yu, David M. Hailey, Zhenyu Zhang, Pam Davy, Mark I. Nelson
Faculty of Engineering and Information Sciences - Papers: Part A
Objective. To examine the time, frequency and duration of each direct care activity conducted by personal carers in Australian residential aged care homes. Methods. A time-motion study was conducted to observe 46 personal carers at two high-care houses in two facilities (14 days at Site 1 and 16 days at Site 2). Twenty-three direct care activities were classified into eight categories for analysis. Results. Overall, a personal carer spent approximately 45% of their time on direct care, corresponding to 3.5 h in an 8-h daytime shift. The two sites had similar ratios of personal carers to residents, and each resident …
Building A Railway For The 21st Century: Bringing High Speed Rail A Step Closer,
2014
SAMROM Pty Ltd
Building A Railway For The 21st Century: Bringing High Speed Rail A Step Closer, Max Michell, Scott Martin, Philip G. Laird
Faculty of Engineering and Information Sciences - Papers: Part A
High Speed Rail (HSR) operating at maximum speeds of above 250km/h with electric passenger trains are now operational in at least 11 countries. As the feasibility of building an Australian East Coast HSR network between Melbourne, Sydney and Brisbane is once again being examined, governments at Federal, State and Local levels need to develop complementary transport infrastructure and services to ensure the long-term financial and operational success of HSR. The lengthy time frame currently envisaged for completing the first stage of an Australian East Coast HSR network by 2035 provides a 20-year window for improving and upgrading urban and regional …
Changes Of Pan Evaporation And Its Influence Factors In China,
2014
Nanjing University of Information Science and Technology
Changes Of Pan Evaporation And Its Influence Factors In China, Yan Guixia, Li Denghua, Kuang Yahong
Faculty of Engineering and Information Sciences - Papers: Part A
Evaporation is an important component both in surface energy balance and terrestrial water cycle, and it is also a key factor determining weather and climate conditions. It plays a significant role in the studies of water and energy balance within a certain area and estimations of water resources. In this study, based on pan evaporation data and their variation trends from 499 stations in China, the correlations between evaporation and various influence factors, including the amount of precipitation, temperature, wind speed, sunshine duration and relative humidity, were studied in depth by means of correlation analysis and set pair analysis methods. …
