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Full-Text Articles in Science and Technology Studies

A Novel Membrane Distillation-Thermophilic Bioreactor System: Biological Stability And Trace Organic Compound Removal, Kaushalya Wijekoon, Faisal Hai, Jinguo Kang, William Price, Wenshan Guo, Hao Ngo, Tzahi Cath, Long Nghiem Sep 2015

A Novel Membrane Distillation-Thermophilic Bioreactor System: Biological Stability And Trace Organic Compound Removal, Kaushalya Wijekoon, Faisal Hai, Jinguo Kang, William Price, Wenshan Guo, Hao Ngo, Tzahi Cath, Long Nghiem

Faisal I Hai

The removal of trace organic compounds (TrOCs) by a novel membrane distillation-thermophilic bioreactor (MDBR) system was examined. Salinity build-up and the thermophilic conditions to some extent adversely impacted the performance of the bioreactor, particularly the removal of total nitrogen and recalcitrant TrOCs. While most TrOCs were well removed by the thermophilic bioreactor, compounds containing electron withdrawing functional groups in their molecular structure were recalcitrant to biological treatment and their removal efficiency by the thermophilic bioreactor was low (0-53%). However, the overall performance of the novel MDBR system with respect to the removal of total organic carbon, total nitrogen, and TrOCs ...


Novel Modulation And Control Strategy For Five-Level Anpc Converter With Unbalanced Dc Voltage Applied To A Single-Phase Grid Connected Pv System, Hamid R. Teymour, Danny Sutanto, Kashem M. Muttaqi, Phil Ciufo Apr 2015

Novel Modulation And Control Strategy For Five-Level Anpc Converter With Unbalanced Dc Voltage Applied To A Single-Phase Grid Connected Pv System, Hamid R. Teymour, Danny Sutanto, Kashem M. Muttaqi, Phil Ciufo

Dr Philip Ciufo

This paper proposes a new control strategy and a novel modulation technique for a grid-connected photo-voltaic (PV) system using a single-phase five-level flying capacitor (FC) based active-neutral-point-clamped (ANPC) converter. The proposed modulator can control the FC voltage to follow the requested reference value and simultaneously generate the required ac output voltage regardless of the values of the dc capacitor voltages of the converter. By implementing this method, smaller values of dc-link and flying capacitors can be used even in applications that could experience ripple or transient in the capacitors voltage. In the grid-connected single-phase five-level ANPC, where the capacitors can ...


Point Of Common Coupling (Pcc) Voltage Control Of A Grid-Connected Solar Photovoltaic (Pv) System, Brian K. Perera, Philip Ciufo, Sarath Perera Apr 2015

Point Of Common Coupling (Pcc) Voltage Control Of A Grid-Connected Solar Photovoltaic (Pv) System, Brian K. Perera, Philip Ciufo, Sarath Perera

Dr Philip Ciufo

In future low voltage grids, with multiple inverter interfaced sources connected, voltage regulation may become a necessary task. The potential exists for inverter interfaced sources to be deployed to regulate the voltage at the point of common coupling (PCC) of each inverter interfaced sources. The PCC voltage regulation is attainable with inverter interfaced sources by dynamically controlling the amount of reactive power injected to the power distribution grid by individual systems. In the current research, a closed-loop controller is proposed to regulate the PCC voltage of a solar photovoltaic (PV) system that is connected to a single-phase power distribution feeder ...


X-Tream: A Novel Dosimetry System For Synchrotron Microbeam Radiation Therapy, M Petasecca, A Cullen, I Fuduli, A Espinoza, C Porumb, C Stanton, A H. Aldosari, E Brauer-Krisch, H Requardt, A Bravin, V Perevertaylo, Anatoly B. Rosenfeld, M L. F Lerch Jan 2015

X-Tream: A Novel Dosimetry System For Synchrotron Microbeam Radiation Therapy, M Petasecca, A Cullen, I Fuduli, A Espinoza, C Porumb, C Stanton, A H. Aldosari, E Brauer-Krisch, H Requardt, A Bravin, V Perevertaylo, Anatoly B. Rosenfeld, M L. F Lerch

Anthony A Espinoza Mr

Microbeam Radiation Therapy (MRT) is a radiation treatment technique under development for inoperable brain tumors. MRT is based on the use of a synchrotron generated X-ray beam with an extremely high dose rate ( ~ 20 kGy/sec), striated into an array of X-ray micro-blades. In order to advance to clinical trials, a real-time dosimeter with excellent spatial resolution must be developed for absolute dosimetry. The design of a real-time dosimeter for such a radiation scenario represents a significant challenge due to the high photon flux and vertically striated radiation field, leading to very steep lateral dose gradients. This article analyses the ...


The Effect Of Geometry And Material Properties On The Performance Of A Small Hydraulic Mckibben Muscle System, Danial Sangian, Sina Naficy, Geoffrey M. Spinks, Bertrand Tondu Jan 2015

The Effect Of Geometry And Material Properties On The Performance Of A Small Hydraulic Mckibben Muscle System, Danial Sangian, Sina Naficy, Geoffrey M. Spinks, Bertrand Tondu

Faculty of Engineering and Information Sciences - Papers: Part A

Fluidic McKibben artificial muscles are one of the most popular biomimetic actuators, showing similar static and dynamic performance to skeletal muscles. In particular, their pneumatic version offers high-generated force, high speed and high strain in comparison to other actuators. This paper investigates the development of a small-size, fully enclosed, hydraulic McKibben muscle powered by a low voltage pump. Hydraulic McKibben muscles with an outside diameter of 6 mm and a length ranging from 35 mm to 80 mm were investigated. These muscles are able to generate forces up to 26 N, strains up to 23%, power to mass of 30 ...


Three Dimensional Dose Verification Of Vmat Plans Using The Octavius 4d Dosimetric System, Sankar Arumugam, Aitang Xing, Tony Young, David Thwaites, Lois C. Holloway Jan 2015

Three Dimensional Dose Verification Of Vmat Plans Using The Octavius 4d Dosimetric System, Sankar Arumugam, Aitang Xing, Tony Young, David Thwaites, Lois C. Holloway

Faculty of Engineering and Information Sciences - Papers: Part A

The Octavius 4D dosimetric system generates a 3D dose matrix based on a measured planar dose and user supplied Percentage Depth Dose (PDD) data. The accuracy of 3D dose matrices reconstructed by the Octavius 4D dosimetric system was systematically studied for an open static field, an open arc field and clinical VMAT plans. The Octavius reconstructed 3D dose matrices were compared with the Treatment Planning System (TPS) calculated 3D dose matrices using 3D gamma (gamma) analysis with 2%/2mm and 3%/3mm tolerance criteria. The larger detector size in the 2D detector array of the Octavius system resulted in failed ...


Stability Enhancement Of Magnetic Levitation Ball System With Two Controlled Electomagnets, Hai Huang, Haiping Du, Weihua Li Jan 2015

Stability Enhancement Of Magnetic Levitation Ball System With Two Controlled Electomagnets, Hai Huang, Haiping Du, Weihua Li

Faculty of Engineering and Information Sciences - Papers: Part A

Magnetic levitation ball system is a highly nonlinear and unstable system. If the system is linearised at the equilibrium point, the achievable balance range of the magnetically levitated ball is very short with one electromagnet. This paper presents an improved magnetic levitation ball system, that contains two electromagnets, where one electromagnet is set above the magnetic ball for pulling, and another one is set under the magnetic ball for pushing. In addition, this paper applies a 2-DOF (degree-of-freedom) PID (proportional-integral-derivative) controller instead of 1-DOF PID for the control of the two electromagnets so that they can work corporately to make ...


Tactile Sensing System Using Electro-Tactile Feedback, Daniel Pamungkas, Koren Ward Jan 2015

Tactile Sensing System Using Electro-Tactile Feedback, Daniel Pamungkas, Koren Ward

Faculty of Engineering and Information Sciences - Papers: Part A

2015 IEEE. Tactile or touch sensing can enable an object's surface texture and other properties to be perceived which can facilitate grasping and manipulating various objects. Prosthetic hand users and operators of tele-operated robot arms also need to perceive these tactile properties by some means to effectively manipulate objects and performed skilled work. This paper introduces a tactile sensing and feedback system that is based on detecting surface vibrations in an artificial finger, when contact or friction with a surface is made, and appropriately stimulating nerves in the user's skin with electro-tactile feedback. This feedback system has benefits ...


Development And Optimization Of An Innovative Hvac System With Integrated Pvt And Pcm Thermal Storage For A Net-Zero Energy Retrofitted House, Massimo Fiorentini, Paul Cooper, Zhenjun Ma Jan 2015

Development And Optimization Of An Innovative Hvac System With Integrated Pvt And Pcm Thermal Storage For A Net-Zero Energy Retrofitted House, Massimo Fiorentini, Paul Cooper, Zhenjun Ma

Faculty of Engineering and Information Sciences - Papers: Part A

This paper describes a novel solar-assisted HVAC system developed for the Team UOW 'Illawarra Flame' Solar Decathlon house, the winner of the Solar Decathlon China 2013 competition. This HVAC system consists of an air-based photovoltaic-thermal (PVT) collector and a phase change material (PCM) thermal storage unit integrated with a reverse cycle heat pump, in a ducted system. The system was designed for operation during both winter and summer using daytime solar radiation and night-time sky radiative cooling, respectively. The PVT collector heats or cools fresh air from ambient and thereby provides heating or cooling either directly to the indoor space ...


Evaluation Of A Partial Ring Design For The Insert Spect/Mri System, Kell Erlandsson, Debora Slavado, Alexandre B. Bousse, Brian F. Hutton Jan 2015

Evaluation Of A Partial Ring Design For The Insert Spect/Mri System, Kell Erlandsson, Debora Slavado, Alexandre B. Bousse, Brian F. Hutton

Faculty of Engineering and Information Sciences - Papers: Part A

The aim of the INSERT project is to develop a SPECT insert for a commercial MRI system, for performing simultaneous SPECT/MRI brain studies in humans. We have previously investigated various design options for the detector system, based on a complete ring of detectors. We are now considering a partial ring, due to space limitations. We have investigated the degradation in image quality with a partial ring as compared to a full ring, and the possibility of addressing the limitations by utilising MRI data during reconstruction. Noise-free data were generated by forward-projecting a cylindrical phantom with spherical inserts for a ...


Mlaas: A Cloud System For Mobile Micro Learning In Mooc, Geng Sun, Tingru Cui, Shiping Chen, Wanwu Guo, Jun Shen Jan 2015

Mlaas: A Cloud System For Mobile Micro Learning In Mooc, Geng Sun, Tingru Cui, Shiping Chen, Wanwu Guo, Jun Shen

Faculty of Engineering and Information Sciences - Papers: Part A

No abstract provided.


A Decentralized Multiagent-Based Voltage Control For Catastrophic Disturbances In A Power System, Sk. Razibul Islam, Kashem M. Muttaqi, Danny Sutanto Jan 2015

A Decentralized Multiagent-Based Voltage Control For Catastrophic Disturbances In A Power System, Sk. Razibul Islam, Kashem M. Muttaqi, Danny Sutanto

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper, a multiagent-based voltage and reactive power control in the case of a multiple contingency is presented. Incorporating the agent-based autonomous feature to the intelligence of the remote terminal units, the present power system control structure can be used to help in preventing system voltage collapse during catastrophic disturbances. The control algorithm is based on a decentralized architecture of intelligent agents and the determination of a local zone that can carry out quick countermeasures in a decentralized manner as a multiagent system (MAS) during an emergency situation. An adaptive determination of the local zones undergoing voltage collapse has ...


Experimental Investigation Of An Innovative Hvac System With Integrated Pvt And Pcm Thermal Storage For A Net-Zero Energy Retrofitted House, Massimo Fiorentini, Paul Cooper, Zhenjun Ma, Josh Wall Jan 2015

Experimental Investigation Of An Innovative Hvac System With Integrated Pvt And Pcm Thermal Storage For A Net-Zero Energy Retrofitted House, Massimo Fiorentini, Paul Cooper, Zhenjun Ma, Josh Wall

Faculty of Engineering and Information Sciences - Papers: Part A

This paper presents the experimental investigation of a novel solar assisted HVAC system developed for the Team UOW Solar Decathlon house, the overall winner of the Solar Decathlon China 2013 competition. This novel HVAC system consists of an air based photovoltaic-thermal (PVT) system and a phase change material (PCM) thermal storage unit integrated with a ducted system with a reverse-cycle heat pump. The system has been designed for operation during both winter and summer, using daytime solar radiation and night sky radiative cooling to increase the energy efficiency of the air-conditioning system. The PVT system can exchange heat with the ...


Electro-Tactile Feedback System For A Prosthetic Hand, Daniel Pamungkas, Koren Ward Jan 2015

Electro-Tactile Feedback System For A Prosthetic Hand, Daniel Pamungkas, Koren Ward

Faculty of Engineering and Information Sciences - Papers: Part A

Without the sense of touch, amputees with prosthetic hands can have difficulty holding and manipulating objects, especially when a task requires some degree of skill and tactile feedback to perform. To equip prosthetic hand users with touch sensing and tactile feedback, researchers have been experimenting with various types of force and/or tactile sensors together with various methods for delivering the tactile information to the brain. Although some success has been achieved recently with force sensors and implanted electrodes, these systems are expensive, surgically invasive and can represent an infection risk where cables emerge through the skin. Also, non-invasive tactile ...


A New Approach To Reduce The Expected Energy Not Supplied In A Power Plant Located In A Non-Expandable Transmission System, Hadi Lomei, Danny Sutanto, Kashem M. Muttaqi, Mohsen Assili Jan 2015

A New Approach To Reduce The Expected Energy Not Supplied In A Power Plant Located In A Non-Expandable Transmission System, Hadi Lomei, Danny Sutanto, Kashem M. Muttaqi, Mohsen Assili

Faculty of Engineering and Information Sciences - Papers: Part A

The main objective of most of power plants is to inject power as much as possible into the grid from the power plants. However, the transmission system may restrain the output capability of the power plant, especially, if the power plant is located in an area of non-expandable transmission system. In this situation, any disturbance in the nearby transmission system may force the plant to generate lower than its rated value, which disables it from selling the remaining available generated power to the costumers and also increases the cost of energy not supplied. In this paper, an efficient method is ...


A New Approach To Reduce The Non-Linear Characteristics Of A Stressed Power System By Using The Normal Form Technique In The Control Design Of The Excitation System, Hadi Lomei, Danny Sutanto, Kashem M. Muttaqi, Mohsen Assili Jan 2015

A New Approach To Reduce The Non-Linear Characteristics Of A Stressed Power System By Using The Normal Form Technique In The Control Design Of The Excitation System, Hadi Lomei, Danny Sutanto, Kashem M. Muttaqi, Mohsen Assili

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper, a new approach is presented to reduce the nonlinear characteristics of a stressed power system by reducing its second-order modal interaction through retuning some parameters of the generator excitation system. In order to determine the second-order modal interaction of the system, a new index on nonlinearity is developed using normal form theory. Using the proposed index of nonlinearity, a sensitivity function is formed to indicate the most effective excitation system parameters in the nonlinear behavior of the system. These dominant parameters are tuned to reduce the second-order modal interaction of the system and to reduce the index ...


Enhanced Frequency Response Strategy For Pmsg Based Wind Energy Conversion System Using Ultracapacitor In Remote Area Power Supply Systems, Yingjie Tan, Kashem M. Muttaqi Jan 2015

Enhanced Frequency Response Strategy For Pmsg Based Wind Energy Conversion System Using Ultracapacitor In Remote Area Power Supply Systems, Yingjie Tan, Kashem M. Muttaqi

Faculty of Engineering and Information Sciences - Papers: Part A

The high penetration level of wind energy, and non-responsive nature of power electronic interfaced wind energy conversion system (WECS) during frequency variations may create significant stress on conventional generators in a wind-diesel hybrid remote area power supply (RAPS) system. Hence, it is a necessity for WECS to provide frequency support. However, conventional frequency control strategies being used for WECS may impose a severe stress to wind turbines. In this paper, an enhanced frequency response strategy is proposed for the permanent magnet synchronous generator (PMSG) based WECS to regulate RAPS system frequency jointly with its integrated ultracapacitors. The proposed frequency response ...


Analysis On The Transient Of A Self-Mixing Interferometry Sensing System, Yuanlong Fan, Bin Liu, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong Jan 2015

Analysis On The Transient Of A Self-Mixing Interferometry Sensing System, Yuanlong Fan, Bin Liu, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong

Faculty of Engineering and Information Sciences - Papers: Part A

The transient of a self-mixing interferometry (SMI) sensing system is investigated in this paper by solving the well known Lang and Kobayashi (LK) equations. Specifically, the influence of two important system parameters, i.e., the feedback level factor and the linewidth enhancement factor, on the transient is discussed, showing that the decay time and the oscillation period of the transient respectively increases and decreases with the increase of the feedback level factor, and both increase with the increase of linewidth enhancement factor. The results presented in this paper are useful for designing a stable SMI system.


A New Protection Scheme For The Dc Traction System Supply, Mehrdad Tarafdar Hagh, Behnam Nouri, Mahmoud Nouri, Hadi Lomei, Kashem M. Muttaqi Jan 2015

A New Protection Scheme For The Dc Traction System Supply, Mehrdad Tarafdar Hagh, Behnam Nouri, Mahmoud Nouri, Hadi Lomei, Kashem M. Muttaqi

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper a new protection scheme for DC traction supply system is introduced, which is known as 'overload protection method'. In this scheme, with the knowledge of the number of traveling trains between two traction substations and the value of current which is drawn from each substation, the occurrence of short circuit fault is detected. The aforementioned data can be extracted and transmitted from railway traffic control system. Recently DDL ('Détection Défaut Lign in French', which means 'Line Fault detection') protection method is used in supply line protection. In this paper, the electrical system of railway system is simulated ...


I-125 Ropes Eye Plaque Dosimetry: Validation Of A Commercial 3d Ophthalmic Brachytherapy Treatment Planning System And Independent Dose Calculation Software With Gafchromic Ebt3 Films, Joel Poder, Stephanie Corde Apr 2014

I-125 Ropes Eye Plaque Dosimetry: Validation Of A Commercial 3d Ophthalmic Brachytherapy Treatment Planning System And Independent Dose Calculation Software With Gafchromic Ebt3 Films, Joel Poder, Stephanie Corde

Stéphanie Corde

Purpose: The purpose of this study was to measure the dose distributions for different Radiation Oncology Physics and Engineering Services, Australia (ROPES) type eye plaques loaded with I-125 (model 6711) seeds using GafChromic R EBT3 films, in order to verify the dose distributions in the Plaque SimulatorTM (PS) ophthalmic 3D treatment planning system. The brachytherapy module of RADCALC R was used to independently check the dose distributions calculated by PS. Correction factors were derived from the measured data to be used in PS to account for the effect of the stainless steel ROPES plaque backing on the 3D dose distribution ...


Towards Formalizing A Reputation System For Cheating Detection In Peer-To-Peer-Based Massively Multiplayer Online Games, Willy Susilo, Yang-Wai Chow, Rungrat Wiangsripanawan Mar 2014

Towards Formalizing A Reputation System For Cheating Detection In Peer-To-Peer-Based Massively Multiplayer Online Games, Willy Susilo, Yang-Wai Chow, Rungrat Wiangsripanawan

Professor Willy Susilo

The rapidly growing popularity of Massively Multiplayer Online Games (MMOGs) has given rise to an increase in the number of players world wide. MMOGs enable many players interact together through a shared sense of presence created by the game. The Peer-to-Peer (P2P) network topology overcomes communication bottleneck problems associated with centralized client/server sys- tems. Thus, P2P-based MMOGs are seen as the way of the future, and many dierent P2P-based MMOG architectures have been proposed to date. However, many architectures are proposed in an ad hoc manner and enhancing the security of such systems is an elusive research problem. In ...


Ropes Eye Plaque Dosimetry: Commissioning And Verification Of An Ophthalmic Brachytherapy Treatment Planning System, J Poder, N Annabell, M Geso, M Alqathami, S Corde Feb 2014

Ropes Eye Plaque Dosimetry: Commissioning And Verification Of An Ophthalmic Brachytherapy Treatment Planning System, J Poder, N Annabell, M Geso, M Alqathami, S Corde

Stéphanie Corde

In this study, the Plaque SimulatorTM eye plaque brachytherapy planning system was commissioned for ROPES eye plaques and Amersham Health model 6711 Iodine 125 seeds, using TG43-UI data. The brachytherapy module of the RADCALC® independent checking program was configured to allow verification of the accuracy of the dose calculated by Plaque SimulatorTM. Central axis depth dose distributions were compared and observed to agree to within 2% for all ROPES plaque models and depths of interest. Experimental measurements were performed with a customized PRESAGEm 3-D type dosimeter to validate the calculated depth dose distributions. Preliminary results have shown the effect of ...


Integrated Dehumidification And Downdraft Evaporative Cooling System For A Hot-Humid Climate, Sriraj Gokarakonda, Georgios Kokogiannakis Jan 2014

Integrated Dehumidification And Downdraft Evaporative Cooling System For A Hot-Humid Climate, Sriraj Gokarakonda, Georgios Kokogiannakis

Faculty of Engineering and Information Sciences - Papers: Part A

Unlike in hot-dry climates, in hot-humid climates evaporative cooling techniques are not readily suitable for space cooling. In order to effectively use evaporative cooling in hot-humid climates, dehumidification of ambient air is necessary before it passes over an evaporative medium for cooling. The present study explores the combined process of dehumidification and evaporation and its effect on thermal comfort in a typical small residential building located in a hot humid climate. A novel system has been investigated with the combination of an Earth Tube Ventilation (ETV) (for pre-cooling of air), a rotary wheel desiccant dehumidifier (for dehumidification) along with a ...


Panoptes: Calibration Of A Dosimetry System For Eye Brachytherapy, Michael Weaver, Marco Petasecca, Dean Cutajar, Michael L. F Lerch, Gianluigi De Geronimo, Donald Pinelli, Ashley Cullen, Dale A. Prokopovich, Vladimir Perevertaylo, Anatoly B. Rosenfeld Jan 2014

Panoptes: Calibration Of A Dosimetry System For Eye Brachytherapy, Michael Weaver, Marco Petasecca, Dean Cutajar, Michael L. F Lerch, Gianluigi De Geronimo, Donald Pinelli, Ashley Cullen, Dale A. Prokopovich, Vladimir Perevertaylo, Anatoly B. Rosenfeld

Faculty of Engineering and Information Sciences - Papers: Part A

Intraocular cancer is a serious threat to the lives of those that suffer from it. Dosimetry for eye brachytherapy presents a significant challenge due to the inherently steep dose gradients that are needed to treat such small tumours in close proximity to sensitive normal structures. This issue is addressed by providing much needed quality assurance to eye brachytherapy, a novel volumetric dosimetry system, called Panoptes was developed. This study focuses on the preliminary characterisation and calibration of the system. Using ion beam facilities, the custom, pixelated silicon detector of Panoptes was shown to have good charge collection uniformity and a ...


A Variable Stiffness And Damping Suspension System For Trains, Shuaishuai Sun, Huaxia Deng, Weihua Li Jan 2014

A Variable Stiffness And Damping Suspension System For Trains, Shuaishuai Sun, Huaxia Deng, Weihua Li

Faculty of Engineering and Information Sciences - Papers: Part A

As the vibration of high speed train becomes fierce when the train runs at high speed, it is crucial to develop a novel suspension system to negotiate train’s vibration. This paper presents a novel suspension based on Magnetorheological fluid (MRF) damper and MRF based smart air spring. The MRF damper is used to generate variable damping while the smart air spring is used to generate field-dependent stiffness. In this paper, the two kind smart devices, MRF dampers and smart air spring, are developed firstly. Then the dynamic performances of these two devices are tested by MTS. Based on the ...


Multi-Phase Ant Colony System For Multi-Party Data-Intensive Service Provision, Lijuan Wang, Jun Shen Jan 2014

Multi-Phase Ant Colony System For Multi-Party Data-Intensive Service Provision, Lijuan Wang, Jun Shen

Faculty of Engineering and Information Sciences - Papers: Part A

The rapid proliferation of enormous sources of digital data has led to greater dependence on data-intensive services. Each service may actually request or create a large amount of data sets. To compose these services will be more challenging. Issues such as autonomy, scalability, adaptability, and robustness, become difficult to resolve. In order to automate the process of reaching an agreement among service composers, service providers, and data providers, an ant-inspired negotiation mechanism is considered in this paper. We exploit a group of agents automatically negotiating to establish agreeable service contracts. Twostage negotiation procedures are used in our data-intensive service provision ...


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 Jan 2014

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 ...


Water Reclamation From Shale Gas Drilling Flow-Back Fluid Using A Novel Forward Osmosis-Vacuum Membrane Distillation Hybrid System, Xue-Mei Li, Baolong Zhao, Zhongwei Wang, Ming Xie, Jianfeng Song, Long Nghiem, Tao He, Chi Yang, Chunxia Li, Ghang Chen Jan 2014

Water Reclamation From Shale Gas Drilling Flow-Back Fluid Using A Novel Forward Osmosis-Vacuum Membrane Distillation Hybrid System, Xue-Mei Li, Baolong Zhao, Zhongwei Wang, Ming Xie, Jianfeng Song, Long Nghiem, Tao He, Chi Yang, Chunxia Li, Ghang Chen

Faculty of Engineering and Information Sciences - Papers: Part A

This study examined the performance of a novel hybrid system of forward osmosis (FO) combined with vacuum membrane distillation (VMD) for reclaiming water from shale gas drilling flow-back fluid (SGDF). In the hybrid FO-VMD system, water permeated through the FO membrane into a draw solution reservoir, and the VMD process was used for draw solute recovery and clean water production. Using a SGDF sample obtained from a drilling site in China, the hybrid system could achieve almost 90% water recovery. Quality of the reclaimed water was comparable to that of bottled water. In the hybrid FO-VMD system, FO functions as ...


Emerging Of Academic Information Search System With Ontology-Based Approach, Norasykin Mohd Zaid, Sim Kim Lau Jan 2014

Emerging Of Academic Information Search System With Ontology-Based Approach, Norasykin Mohd Zaid, Sim Kim Lau

Faculty of Engineering and Information Sciences - Papers: Part A

This paper describes the comparison of ontology development tools for development of academic information search system that assists inexperienced research students at a local university in Malaysia to search for academic resources in the local language context (Bahasa Malaysia). The cohort of inexperienced research students faces two main problems when using current system comprises of keyword search. Firstly the language barrier-limiting students' capabilities to conduct keyword search in foreign language (such as English). Secondly limited research experience in querying often results in obtaining irrelevant search results. The proposed semantic search system aims to apply ontology-based search to overcome the above ...


Multi-Objective Ant Colony System For Data-Intensive Service Provision, Lijuan Wang, Jun Shen, Junzhou Luo Jan 2014

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