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Articles 1 - 30 of 170
Full-Text Articles in Engineering
Practical Reliability Approach To Urban Slope Stability, R. Chowdhury, P. Flentje
Practical Reliability Approach To Urban Slope Stability, R. Chowdhury, P. Flentje
Faculty of Engineering - Papers (Archive)
Assessing urban slope stability requires consideration of significant uncertainties including those associated with shear strength and pore water pressure. For site-specific studies, there is considerable merit in adopting a reliability approach within a probabilistic framework based on widely accepted geotechnical models. Regional slope stability studies are facilitated by using a GIS-based approach. Considerable effort is required to prepare regional data sets including topography and geology and to develop a landslide inventory. Reference is made to a comprehensive knowledge-based approach for assessing failure susceptibility and hazard within an urban region in Australia. Each hazard zone is associated with an estimated likelihood …
Bulk And Surface Field-Induced Optical Rectification From (11n) Zincblende Crystals In A Quasireflection Geometry, Krunal Radhanpura, Stuart Hargreaves, Roger A. Lewis
Bulk And Surface Field-Induced Optical Rectification From (11n) Zincblende Crystals In A Quasireflection Geometry, Krunal Radhanpura, Stuart Hargreaves, Roger A. Lewis
Faculty of Engineering - Papers (Archive)
IIn a previous article, we presented a generalized expression for second-order bulk and third-order surface-field–induced optical rectification for zincblende 4̅ 3m crystal faces with arbitrary Miller indices (hkl) along with experimental data for (11N)A and (11N)B GaAs in transmission geometry. We now expand the results to quasireflection geometry, with angles of incidence and detection of 45°. While this geometry introduces a p-polarized signal component due to mechanisms other than optical rectification, such as photocarrier acceleration by the surface depletion field, the azimuthal angle dependence of the optical rectification component yields further insight into the crystallographic orientation and surface …
Bioaugmented Membrane Bioreactor (Mbr) With A Gac-Packed Zone For High Rate Textile Wastewater Treatment, Faisal Ibney Hai, Kazuo Yamamoto, Fumiyuki Nakajima, Kensuke Fukushi
Bioaugmented Membrane Bioreactor (Mbr) With A Gac-Packed Zone For High Rate Textile Wastewater Treatment, Faisal Ibney Hai, Kazuo Yamamoto, Fumiyuki Nakajima, Kensuke Fukushi
Faculty of Engineering - Papers (Archive)
The long-term performance of a bioaugmented membrane bioreactor (MBR) containing a GAC3 packed anaerobic zone for treatment of textile wastewater containing structurally different azo dyes was observed. A unique feeding strategy, consistent with the mode of evolution of separate waste streams in textile plants, was adopted to make the best use of the GAC-zone for dye removal. Dye was introduced through the GAC-zone while the rest of the colorless media was simultaneously fed through the aerobic zone. Preliminary experiments confirmed the importance of coupling the GAC amended anaerobic zone to the aerobic MBR and also evidenced the efficacy of the …
Sorption Of Pesticide Endosulfan By Electrodialysis Membranes, Laura Banasiak, Bart Van Der Bruggen, Andrea Schafer
Sorption Of Pesticide Endosulfan By Electrodialysis Membranes, Laura Banasiak, Bart Van Der Bruggen, Andrea Schafer
Faculty of Engineering - Papers (Archive)
Endosulfan (ES) is a micropollutant found in reverse osmosis concentrates from water reuse applications. Electrodialysis (ED) can remove and recover charged solutes from such concentrates. While polar compounds cannot normally be removed, their fate in ED is important as they can contribute to membrane fouling/poisoning and be released during cleaning. High adsorption of ES to ED membranes was observed. Consequently, the influence of solution pH and presence of humic acid (HA) on sorption mechanisms of ES to ion-exchange membranes during batch sorption isotherm and ED experiments were investigated systematically. ES-membrane partition coefficients (log KAEM/CEM) quantified through sorption isotherm experiments suggested …
A Numerical Study To Evaluate Dynamic Responses Of Voided Concrete Railway Sleepers To Impact Loading, Sakdirat Kaewunruen, Alexander Remennikov, Akira Aikawa
A Numerical Study To Evaluate Dynamic Responses Of Voided Concrete Railway Sleepers To Impact Loading, Sakdirat Kaewunruen, Alexander Remennikov, Akira Aikawa
Faculty of Engineering - Papers (Archive)
The prestressed concrete railway sleepers (or railroad ties), which are installed in railway track systems as the crosstie beam support, are designed to carry and transfer the wheel loads from the rails to the ground. It is well known that railway tracks are subject to impact loading conditions, which are attributable to the train operations with either wheel or rail abnormalities such as flat wheels, dipped rails, etc. These loads are of very high magnitude but short duration. In many cases, it has been reported from the fields that concrete sleepers are lacking of support due to mud pumping or …
Comprehensive Model Of Oxygen Steelmaking Part 3: Decarburization In Impact Zone, Neslihan Dogan, Geoffrey A. Brooks, Akbar Rhamdhani
Comprehensive Model Of Oxygen Steelmaking Part 3: Decarburization In Impact Zone, Neslihan Dogan, Geoffrey A. Brooks, Akbar Rhamdhani
Faculty of Engineering - Papers (Archive)
The development of a global model for oxygen steelmaking and its validation against industrial data has been reported in Part 1 of this paper. Part 2 of this paper explained the model development of decarburization reaction of emulsified droplets and discussed the effects of bloating behaviour of metal droplets on the overall kinetics of the process. Part 3 of this paper focussed on the development of one sub-model on the decarburization reaction in the impact zone and critically evaluates the important process variables affecting the decarburization kinetics. Decarburization rates in the impact zone were calculated using the semi-empirical relationships developed …
Anicap: An Animated 3d Captcha Scheme Based On Motion Parallax, Yang-Wai Chow, Willy Susilo
Anicap: An Animated 3d Captcha Scheme Based On Motion Parallax, Yang-Wai Chow, Willy Susilo
Faculty of Engineering - Papers (Archive)
CAPTCHAs are essentially challenge-response tests that are used to distinguish whether a user is a human or a computer. To date, numerous CAPTCHA schemes have been proposed and deployed on various websites to secure online services from abuse by automated programs. However, many of these CAPTCHAs have been found to suffer from design flaws that can be exploited to break the CAPTCHA. Hence, the development of a good CAPTCHA scheme that is both secure and human usable is an important research problem. This paper addresses this problem by presenting AniCAP, a new animated 3D CAPTCHA scheme that is designed to …
Subgap Optical Conductivity In Semihydrogenated Graphene, Yee Sin Ang, Chao Zhang
Subgap Optical Conductivity In Semihydrogenated Graphene, Yee Sin Ang, Chao Zhang
Faculty of Engineering - Papers (Archive)
We report that for graphene with a finite band gap (such as semihydrogenated graphene or graphene with spin-orbit coupling), there exists a strong nonlinear optical response for energies lower than the band gap where the linear response is forbidden. At low temperatures, the nonlinear current in graphene with a gap is much stronger than that in gapless graphene. Our result suggests that semihydrogenated graphene can have a unique potential as a two-color nonlinear material in the terahertz frequency region. The relative intensity of the two colors can be tuned with the electric field.
Stacked-And-Drawn Metamaterials With Magnetic Resonances In The Terahertz Range, Alessandro Tuniz, Richard Lwin, Alex Argyros, Simon Fleming, Elise Pogson, Evan Constable, R. A. Lewis, Boris Kuhlmey
Stacked-And-Drawn Metamaterials With Magnetic Resonances In The Terahertz Range, Alessandro Tuniz, Richard Lwin, Alex Argyros, Simon Fleming, Elise Pogson, Evan Constable, R. A. Lewis, Boris Kuhlmey
Faculty of Engineering - Papers (Archive)
We present a novel method for producing drawn metamaterials containing slotted metallic cylinder resonators, possessing strong magnetic resonances in the terahertz range. The resulting structures are either spooled to produce a 2-dimensional metamaterial monolayer, or stacked to produce three-dimensional multi-layered metamaterials. We experimentally investigate the effects of the resonator size and number of metamaterial layers on transmittance, observing magnetic resonances between 0.1 and 0.4 THz, in good agreement with simulations. Such fibers promise future applications in mass-produced stacked or woven metamaterials
The Role Of Brookite In Mechanical Activation Of Anatase-To-Rutile Transformation Of Nanocrystalline Tio2: An Xrd And Raman Spectroscopy Investigation, Masih Rezaee, Seyyed Khoie, Hua-Kun Liu
The Role Of Brookite In Mechanical Activation Of Anatase-To-Rutile Transformation Of Nanocrystalline Tio2: An Xrd And Raman Spectroscopy Investigation, Masih Rezaee, Seyyed Khoie, Hua-Kun Liu
Faculty of Engineering - Papers (Archive)
The mechanism of phase transformation in nanocrystalline TiO2 powders at ambient temperature during high energy ball milling and the role of brookite phase in anatase-to-rutile phase transformation were investigated by the use of Rietveld analysis of X-ray diffraction patterns and Raman spectroscopy methods. The milling process was performed on a fully anatase phase nanocrystalline TiO2 powder via a high energy planetary ball mill with different ball-to-powder weight ratios followed by annealing of the as-milled samples. Some transformation from anatase-to-brookite was observed in all as-milled powders by high resolution transmission electron microscopy. It was proposed that brookite occurs at …
Comparison Of Go, Go/Mwcnts Composite And Mwcnts As Potential Electrode Materials For Supercapacitors, Seyed Hamed Aboutalebi, Maryam Salari, Konstantin Konstantinov, David Wexler, Hua-Kun Liu, S. X. Dou
Comparison Of Go, Go/Mwcnts Composite And Mwcnts As Potential Electrode Materials For Supercapacitors, Seyed Hamed Aboutalebi, Maryam Salari, Konstantin Konstantinov, David Wexler, Hua-Kun Liu, S. X. Dou
Faculty of Engineering - Papers (Archive)
We report the synthesis of graphene oxide/multi-walled carbon nanotube (MWCNT) composites employing an alternative and novel approach for possible application as supercapacitor materials in energy storage devices. Integrating these nanostructures resulted in a strong synergistic effect between the two materials consequently leading to a robust and superior hybrid material with higher capacitance compared to either graphene oxide or MWCNTs. Specific capacitances of 251, 85 and 60 F g−1 were obtained for graphene oxide-multi-walled carbon nanotubes, MWCNTs and graphene oxide, respectively, in a potential range from −0.1 to 0.5 V. Most importantly, a 120% increase in capacitance was observed with …
Dynamics And Morphology Of Dendritic Flux Avalanches In Superconducting Films, J. Vestgarden, D. V. Shantsev, Y. Galperin, T H. Johansen
Dynamics And Morphology Of Dendritic Flux Avalanches In Superconducting Films, J. Vestgarden, D. V. Shantsev, Y. Galperin, T H. Johansen
Faculty of Engineering - Papers (Archive)
We develop a fast numerical procedure for the analysis of nonlinear and nonlocal electrodynamics of type-II superconducting films in transverse magnetic fields coupled with heat diffusion. Using this procedure, we explore the stability of such films with respect to dendritic flux avalanches. The calculated flux patterns are very close to experimental magneto-optical images of MgB2 and other superconductors, where the avalanche sizes and their morphology change dramatically with temperature. Moreover, we find the values of a threshold magnetic field, which agrees with both experiments and linear stability analysis. The simulations predict the temperature rise during an avalanche, where for …
Influence Of Temperature On Coal Sorption Characteristics And The Theory Of Coal Surface Free Energy, Lei Zhang, Najdat I. Aziz, Ting Ren, Zhongwei Wang
Influence Of Temperature On Coal Sorption Characteristics And The Theory Of Coal Surface Free Energy, Lei Zhang, Najdat I. Aziz, Ting Ren, Zhongwei Wang
Faculty of Engineering - Papers (Archive)
An experimental study was undertaken to examine the sorption and desorption characteristics of coal at temperatures of 35 °C, 45 °C and 55 °C. The study focused on the effect of changes in temperature and coal particle sizes on gas sorption and desorption characteristics. The coal size used ranged from fragmented coals, 16 mm, 8 mm, 2.4 mm, powdered coal of 150 μm and 54 mm core samples. The samples were tested in pressure vessels, known as “bombs”, charged with CO2 gas at different pressure levels up to a maximum of 4000 kPa. It was found that temperature has a …
Influence Of Temperature On The Gas Content Of Coal And Sorption Modelling, Lei Zhang, Najdat I. Aziz, Ting Ren, Zhongwei Wang
Influence Of Temperature On The Gas Content Of Coal And Sorption Modelling, Lei Zhang, Najdat I. Aziz, Ting Ren, Zhongwei Wang
Faculty of Engineering - Papers (Archive)
n experimental study was undertaken to examine the sorption and desorption characteristics of coal at temperatures of 35 °C, 45 °C and 55 °C. The study focused on the effect of changes in temperature and coal particle sizes on gas sorption and desorption characteristics. The coal size used ranged from fragmented coals, 16 mm, 8 mm, 2.4 mm, powdered coal of 150 μm and 54 mm core samples. The samples were tested in pressure vessels, known as bombs, and charged with CO2 gas at different pressure levels up to a maximum of 4000 kPa. It was found that temperature was …
Determining The Ultimate Strength Of 'Tough Skin', A Glass Fibre Reinforced Polymer Liner, Jan Anton Nemcik, Ian Porter, Ernest Y. Baafi, Jeffery Navin
Determining The Ultimate Strength Of 'Tough Skin', A Glass Fibre Reinforced Polymer Liner, Jan Anton Nemcik, Ian Porter, Ernest Y. Baafi, Jeffery Navin
Faculty of Engineering - Papers (Archive)
Fully encapsulated roof bolts have been proven to confine the roof and rib strata actively, while steel mesh only provides passive support and protection from falling rocks as they dislodge from the roof. To provide better stability of the mine roadway skin, replacement of the steel mesh with a spray on polymer liner is being investigated. Among the many benefits that may be realised by the application of quick setting spray on polymer liners as skin support are an increase in development rates and improved safety for working personnel. Extensive testing of a range of available polymer formulations is currently …
Preliminary Evaluations On Laser - Tandem Gmaw, Ruham P. Reis, John Norrish, Dominic Cuiuri
Preliminary Evaluations On Laser - Tandem Gmaw, Ruham P. Reis, John Norrish, Dominic Cuiuri
Faculty of Engineering - Papers (Archive)
Recently there has been considerable research and development activity in the use of lasers for welding operations, turning this process into an important tool for a variety of applications. Although it is possible to use lasers as a unique source of heat to promote union of materials, the combination of the beam provided by a laser system with an arc welding process has been studied widely and applied in the so-called hybrid welding systems. Generally, the final result of such a combination is an increase in the weld penetration depth, width and welding travel speed. Despite these advantages, there are …
Vortex-Induced Motion Of Nonlinear Compliant Low Aspect Ratio Cylindrical Systems, Brad Stappenbelt
Vortex-Induced Motion Of Nonlinear Compliant Low Aspect Ratio Cylindrical Systems, Brad Stappenbelt
Faculty of Engineering - Papers (Archive)
Mooring systems employed for floating structures commonly result in non-linear load-excursion characteristics. The non-linear stiffness and the subsequent amplitude-dependent natural frequency influence the vortex-induced motion of the structure. The application of linear stiffness vortex-induced motion modelling and experimental data has been shown to produce significant uncertainties regarding the onset and vortex-induced response prediction of catenary moored cylindrical structures (Bjarke et al. 2003; Dijk et al. 2003). In the present study, the two-degree of freedom vortex-induced motion of non-linearly compliant elastically mounted rigid cylinders was experimentally investigated. Specifically, third-order polynomial hard-spring stiffness, typical of catenary moorings was considered. The linear and …
Efficient Utilisation Of Coal By Integrating Various Industries, Guangqing Zhang
Efficient Utilisation Of Coal By Integrating Various Industries, Guangqing Zhang
Faculty of Engineering - Papers (Archive)
Natural gas, petroleum and coal are hydrocarbons with significantly different molecular weights and hydrogen to carbon ratios. Among the three conventional fossil fuels, coal is the most abundant and the cheapest, while petroleum is a most desirable fuel resource because it is easily processed into valuable petroleum products, especially gasoline and diesel. How to utilise coal resources, especially as a replacement of petroleum, is an important topic.
Let's Talk Terahertz!, R A. Lewis
Let's Talk Terahertz!, R A. Lewis
Faculty of Engineering - Papers (Archive)
Letter to the editor of the American Journal of Physics.
Multifunctionality From Coexistence Of Large Magnetoresistance And Magnetocaloric Effect In La0.7ca0.3mno3, J. C. Debnath, R. Zeng, J. H. Kim, S. X. Dou
Multifunctionality From Coexistence Of Large Magnetoresistance And Magnetocaloric Effect In La0.7ca0.3mno3, J. C. Debnath, R. Zeng, J. H. Kim, S. X. Dou
Faculty of Engineering - Papers (Archive)
We report the existence of multifunctionality involving large magnetoresistance (MR) and magnetocaloric effect (MCE) near room temperature in La0.7Ca0.3MnO3. A peak in the temperature dependence of the magnetoresistance and a change in the magnetic entropy (ΔSM) are observed at 251 K, with a maximum magnetoresistance MR (defined as ρ(0)∕ρ(H)−1) of about 206% and a maximum ΔSM of approximately 7.54 J∕kgK, at a field of 5 T, where the Curie temperature (TC) and metal‐insulator transition coexist at 251 K. The magnetic entropy change is measured on the basis of resistive …
Effect Of Ti And N Concentrations On Microstructure And Mechanical Properties Of Microalloyed High Strength Line Pipe Steel Welds, Leigh Fletcher, Zhixiong Zhu, Marimuthu Murugananth, Lei Zheng, Mingzhuo Bai, Huijun Li, F Barbaro
Effect Of Ti And N Concentrations On Microstructure And Mechanical Properties Of Microalloyed High Strength Line Pipe Steel Welds, Leigh Fletcher, Zhixiong Zhu, Marimuthu Murugananth, Lei Zheng, Mingzhuo Bai, Huijun Li, F Barbaro
Faculty of Engineering - Papers (Archive)
A selection of nine heats of line pipe steel from the same project with different Ti and N content were used to evaluate the effects of Ti/N ratio on weld zone microstructure, hardness and prior austenite grain size (PAGS) in the coarse grained heat-affected zone (CGHAZ). It was shown that the microstructure of the base metal (BM) mainly consisted of fine grained polygonal ferrite with fine islands of pearlite. The weld metal (WM) microstructure was predominantly acicular ferrite with a small volume fraction of pro-eutectoid ferrite. The CGHAZ consisted of bainitic ferrite and islands of martensite-austenite. The inside region of …
Organic Solar Cells: Evaluation Of The Stability Of P3ht Using Time-Delayed Degradation, Chung-How Poh, Chung-Kiak Poh, Glenn Bryant, Warwick Belcher, Paul Dastoor
Organic Solar Cells: Evaluation Of The Stability Of P3ht Using Time-Delayed Degradation, Chung-How Poh, Chung-Kiak Poh, Glenn Bryant, Warwick Belcher, Paul Dastoor
Faculty of Engineering - Papers (Archive)
Despite the fact that the performance of organic solar cells is generally susceptible to degradation by moisture exposure, there has been suggestion that the photoactive layer (P3HT) is surprisingly resilient. This work attempts to confirm the stability of P3HT as an organic solar cell material by deliberately introducing water into the photoactive layer. A dramatic step drop in device performance during cell characterization is observed approximately one day after the device has been fabricated. The time-delayed step drop in output efficiency strongly suggests that moisture has little effect on the P3HT conducting polymer.
Modelling Net Zero Energy Options For A Sustainable Buildings Research Centre, Paul Cooper, Xiong Liu, Prabuono Buyung Kosasih, Rui Yan
Modelling Net Zero Energy Options For A Sustainable Buildings Research Centre, Paul Cooper, Xiong Liu, Prabuono Buyung Kosasih, Rui Yan
Faculty of Engineering - Papers (Archive)
This paper describes the preliminary design and energy analysis of a university research building in NSW, Australia. This case study highlights some of the challenges confronting those wishing to design cost-effective net zero energy buildings in the Australian higher education sector and beyond. The Sustainable Buildings Research Centre (SBRC) is presently under development at the University of Wollongong and will be a unique building in the local region and an exemplar in respect of demonstration of a range of technical and operational means of reducing greenhouse emissions and other ecological impacts. This paper provides details on the constraints and opportunities …
Study On Solidification During Twin-Roll Casting Of Magnesium Alloy, Yucheng Zhang, X Cheng, D Wei, Xiaolin Wang, Z Jiang
Study On Solidification During Twin-Roll Casting Of Magnesium Alloy, Yucheng Zhang, X Cheng, D Wei, Xiaolin Wang, Z Jiang
Faculty of Engineering - Papers (Archive)
The process of vertical twin-roll casting including pouring, solidifying, roiling and cooling can be accomplished In a very short time. Some Important process parameters In roll casting that are difficult to be obtained experimentally may be acquired by employing numerical simulation. In this paper, a numerical simulation has been conducted based on a 20 finite element model of vertical twin-roil ab1p casting coupling temperature, flow, and thermal stress. The Influences of key process parameters Including submerged nozzle depth and nozzle spray angle have been studied. The distribution of thermal stress was obtained and Its effect on the cracks In the …
Analytic And Finite Element Solutions For Temperature Profiles In Welding Using Varied Heat Source Models, Djarot Darmadi, John Norrish, Anh Kiet Tieu
Analytic And Finite Element Solutions For Temperature Profiles In Welding Using Varied Heat Source Models, Djarot Darmadi, John Norrish, Anh Kiet Tieu
Faculty of Engineering - Papers (Archive)
Solutions for the temperature profile around a moving heat source are obtained using both analytic and finite element (FEM) methods. Analytic and FEM solutions are applied to study the temperature profile in welding. A moving heat source is represented using both point heat source and uniform distributed disc heat source models. Analytic solutions are obtained by solving the partial differential equation for energy conservation in a solid, and FEM results are provided by simulating welding using the ANSYS software. Comparison is made for quasi steady state conditions. The results provided by the analytic solutions are in good agreement with results …
Landslide Susceptibility And Landslide Hazard Zoning In Wollongong, Phillip Flentje, David Stirling, Daniel Palamara, Robin Chowdhury
Landslide Susceptibility And Landslide Hazard Zoning In Wollongong, Phillip Flentje, David Stirling, Daniel Palamara, Robin Chowdhury
Faculty of Engineering - Papers (Archive)
This paper describes 'knowledge-based' data-mining techniques, developed for the assessment of landslide susceptibility and hazard with particular reference to its application in the Wollongong area. Large scale maps of geology and a comprehensive Landslide Inventory with regional coverage have been prepared. GIS-based derivatives of the digital elevation model including slope, geomorphology, curvature, flow accumulation and wetness index have been developed. Model performance has been assessed as part of a refined methodology for validation, including field inspections. Susceptibility zones outside known landslide areas have been classified as (a) high (b) moderate, (c) low and (d) very low susceptibility. Results show the …
Simulation Of Water And Contaminant Transport Through Vadose Zone - Redistribution System, Thidarat Bunsri, Muttucumaru Sivakumar, Dharmappa Hagare
Simulation Of Water And Contaminant Transport Through Vadose Zone - Redistribution System, Thidarat Bunsri, Muttucumaru Sivakumar, Dharmappa Hagare
Faculty of Engineering - Papers (Archive)
Movement of water in vadose zone, mainly focusing on infiltration and percolation that involves percolation of water under gravity from soil surface and redistribution which is the capillary rise of water movement upwards, is presented. In the global hydrologic cycle, 76% of the precipitating water enters the soil via percolation-infiltration, which leads to the downward movement of water (L’vovich 1974). The water used by natural processes, can move downwards due to infiltration and lift from groundwater table during natural redistribution process. The forecasting of water movement in unsaturated infiltration redistribution system is linked between soil hydraulic properties and hydrologic condition …
Background Dose For Systemic Targeted Alpha Therapy, Chen-Yu Huang, Susanna Guatelli, Bradley Oborn, Barry J. Allen
Background Dose For Systemic Targeted Alpha Therapy, Chen-Yu Huang, Susanna Guatelli, Bradley Oborn, Barry J. Allen
Faculty of Engineering - Papers (Archive)
The phase 1 clinical trial of systemic Targeted Alpha Therapy for metastatic melanoma has shown that solid tumours can be regressed by alpha radiation. However, patient blood vessels and lymphocytes inevitably received a background radiation from non-targeted alpha decays in the blood circulation. To determine the toxicity of alpha particle to normal tissue capillaries and peripheral blood lymphocytes, capillary and lymphocyte models were established with Geant4 Monte Carlo microdosimetry technique. The specific energy deposited in a capillary endothelial cell nucleus or lymphocyte nucleus per radioactive decay and the cell survival rates were calculated for the source constrained in the vessel. …
Novel Spp Water Management Strategy And Its Applications, Shu-Qing Yang, Bo-Qiang Qin, Pengzhi Lin
Novel Spp Water Management Strategy And Its Applications, Shu-Qing Yang, Bo-Qiang Qin, Pengzhi Lin
Faculty of Engineering - Papers (Archive)
Clean freshwater is the most precious resource in the world and the development of water resources has had a very long history, as early as humans changed from being hunters and food collectors to modern civilization. At very early stage, people had to rely on creeks, rivers and lakes for their water demand that was relatively small, and today humans have accumulated the knowledge and techniques for water storage, building artificial lakes or reservoirs to meet their huge water demand due to industrialization and urbanization. The Wworld’s earliest large dam was the Sadd-el-kafara Dam built in Egypt between 2950 and …
Service Change Analyzer: An Enabling Tool For Change Management In Service-Based Business Processes, Yi Wang, Jian Yang, Weiliang Zhao
Service Change Analyzer: An Enabling Tool For Change Management In Service-Based Business Processes, Yi Wang, Jian Yang, Weiliang Zhao
Faculty of Engineering - Papers (Archive)
In this paper, we propose the Service Change Analyzer (SCA) as an enabling tool for analyzing change impact in services and associated business processes. The SCA is built up based on our change management approach focusing on the analysis of dependencies between services and their supporting business processes. Our change management approach includes a service-oriented business process model, a change taxonomy, change impact patterns, and the algorithms for calculating the impact scopes of a specific change. The SCA provides developers a standard practice to change the complicated tasks of change management into a series of simple and standard procedures. The …