Open Access. Powered by Scholars. Published by Universities.®

Social and Behavioral Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

University of Wollongong

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 3331 - 3360 of 14367

Full-Text Articles in Social and Behavioral Sciences

Interaction Prediction Between Groundwater And Quarry Extension Using Discrete Choice Models And Artificial Neural Networks, Johan Barthelemy, Timoteo Carletti, Louise Collier, Vincent Hallet, Marie Moriame, Annick Sartenear Jan 2016

Interaction Prediction Between Groundwater And Quarry Extension Using Discrete Choice Models And Artificial Neural Networks, Johan Barthelemy, Timoteo Carletti, Louise Collier, Vincent Hallet, Marie Moriame, Annick Sartenear

Faculty of Engineering and Information Sciences - Papers: Part A

Groundwater and rock are intensively exploited in the world. When a quarry is deepened the water table of the exploited geological formation might be reached. A dewatering system is therefore installed so that the quarry activities can continue, possibly impacting the nearby water catchments. In order to recommend an adequate feasibility study before deepening a quarry, we propose two interaction indices between extractive activity and groundwater resources based on hazard and vulnerability parameters used in the assessment of natural hazards. The levels of each index (low, medium, high, very high) correspond to the potential impact of the quarry on the …

Go to article

An Implementation Of Discrete Electron Transport Models For Gold In The Geant4 Simulation Toolkit, D Sakata, Sebastien Incerti, M Bordage, N Lampe, Susumu Okada, Dimitris Emfietzoglou, Ioanna Kyriakou, K Murakami, Takashi Sasaki, H Tran, Susanna Guatelli, V Ivantchenko Jan 2016

An Implementation Of Discrete Electron Transport Models For Gold In The Geant4 Simulation Toolkit, D Sakata, Sebastien Incerti, M Bordage, N Lampe, Susumu Okada, Dimitris Emfietzoglou, Ioanna Kyriakou, K Murakami, Takashi Sasaki, H Tran, Susanna Guatelli, V Ivantchenko

Faculty of Engineering and Information Sciences - Papers: Part A

Gold nanoparticle (GNP) boosted radiation therapy can enhance the biological effectiveness of radiation treatments by increasing the quantity of direct and indirect radiation-induced cellular damage. As the physical effects of GNP boosted radiotherapy occur across energy scales that descend down to 10 eV, Monte Carlo simulations require discrete physics models down to these very low energies in order to avoid underestimating the absorbed dose and secondary particle generation. Discrete physics models for electron transportation down to 10 eV have been implemented within the Geant4-DNA low energy extension of Geant4. Such models allow the investigation of GNP effects at the nanoscale. …

Go to article

Ansto Tour And Site Visit, Klaus-Dieter Liss Jan 2016

Ansto Tour And Site Visit, Klaus-Dieter Liss

Faculty of Engineering and Information Sciences - Papers: Part A

On 9 September 2016, Materials Australia New South Wales members gathered at the Australian Nuclear Science and Technology Organisation (ANSTO) for a tour of some of the country's most advanced, scientific infrastructure. After almost two years, this is the second time we were escorted around ANSTO's Lucas Heights site.

Go to article

A New Micro Scale Fe Model Of Crystalline Materials In Micro Forming Process, Liang Luo, Haibo Xie, Dongbin Wei, Xiaogang Wang, Cunlong Zhou, Zhengyi Jiang Jan 2016

A New Micro Scale Fe Model Of Crystalline Materials In Micro Forming Process, Liang Luo, Haibo Xie, Dongbin Wei, Xiaogang Wang, Cunlong Zhou, Zhengyi Jiang

Faculty of Engineering and Information Sciences - Papers: Part A

Micro forming of metals has drawn global attention due to the increasing requirement of micro metal products. However, the size effects become significant in micro forming processes and affect the application of finite element (FE) simulation of micro forming processes. Dividing samples into small areas according to their microstructures and assigning individual properties to each small area are a possible access to micro forming simulation considering material size effects. In this study, a new model that includes both grains and their boundaries was developed based on the observed microstructures of samples. The divided subareas in the model have exact shapes …

Go to article

Microscale Mechanical Behaviour Of Ultra-Fine-Grained Materials Processed By High-Pressure Torsion, Klaus-Dieter Liss Jan 2016

Microscale Mechanical Behaviour Of Ultra-Fine-Grained Materials Processed By High-Pressure Torsion, Klaus-Dieter Liss

Faculty of Engineering and Information Sciences - Papers: Part A

A special networking seminar was given by Associate Professor Megumi Kawasaki from Hanyang University, South Korea. The seminar covered microscale mechanical behaviour of ultrafine- grained materials processed by high-pressure torsion, and was co-organised by the School of Mechanical, Materials and Mechatronic Engineering (MMME), University of Wollongong and Materials Australia NSW. The event was hosted on 20 September 2016 at a sponsored networking tea by MMME.

Go to article

Finite Element Method Analysis Of Surface Roughness Transfer In Micro Flexible Rolling, Feijun Qu, Haibo Xie, Zhengyi Jiang Jan 2016

Finite Element Method Analysis Of Surface Roughness Transfer In Micro Flexible Rolling, Feijun Qu, Haibo Xie, Zhengyi Jiang

Faculty of Engineering and Information Sciences - Papers: Part A

Micro flexible rolling aims to fabricate submillimeter thick strips with varying thickness profile, where the surface quality of products is mainly determined by initial workpiece surface roughness and subsequent surface asperity flattening process, which is affected by process parameters during rolling. This paper shows a 3D finite element model for flexible rolling of a 250 μm thick workpiece with reduction of 20 to 50%, and rolling phase with thinner thickness indicates a better ability to decrease the surface roughness. Four types of initial workpiece surface roughness are studied in the simulation, and the influences of process parameters, such as friction …

Go to article

A Conceptual Model For The Application Of Business Analytics In The Horizontal Strategic Alliance, John Janosko, Tingru Cui, S K. Lau Jan 2016

A Conceptual Model For The Application Of Business Analytics In The Horizontal Strategic Alliance, John Janosko, Tingru Cui, S K. Lau

Faculty of Engineering and Information Sciences - Papers: Part A

The formation of strategic alliances amongst organisations has grown in recent years as globalisation has opened new markets for firms to pursue. It is of ever-increasing importance that organisations have a thorough understanding of the performance of their alliance to achieve competitive advantage. However, much research on strategic alliance has focused on examining the organisations within the alliance rather than focusing on the alliance itself. Using the new discipline of business analytics, this paper proposes a hierarchical model blending the functional roles of business analytics with data standardisation and context mediation frameworks to allow business analytics to be applied to …

Go to article

Iterated Random Oracle: A Universal Approach For Finding Loss In Security Reduction, Fuchun Guo, Willy Susilo, Yi Mu, Rongmao Chen, Jianchang Lai, Guomin Yang Jan 2016

Iterated Random Oracle: A Universal Approach For Finding Loss In Security Reduction, Fuchun Guo, Willy Susilo, Yi Mu, Rongmao Chen, Jianchang Lai, Guomin Yang

Faculty of Engineering and Information Sciences - Papers: Part A

No abstract provided.

Go to article

Multivariate Spatial Covariance Models: A Conditional Approach, Noel A. Cressie, Andrew Zammit-Mangion Jan 2016

Multivariate Spatial Covariance Models: A Conditional Approach, Noel A. Cressie, Andrew Zammit-Mangion

Faculty of Engineering and Information Sciences - Papers: Part A

Multivariate geostatistics is based on modelling all covariances between all possible combinations of two or more variables at any sets of locations in a continuously indexed domain. Multivariate spatial covariance models need to be built with care, since any covariance matrix that is derived from such a model must be nonnegative-definite. In this article, we develop a conditional approach for spatial-model construction whose validity conditions are easy to check. We start with bivariate spatial covariance models and go on to demonstrate the approach's connection to multivariate models defined by networks of spatial variables. In some circumstances, such as modelling respiratory …

Go to article

Small Area Estimation For Semicontinuous Data, Hukum Chandra, Raymond L. Chambers Jan 2016

Small Area Estimation For Semicontinuous Data, Hukum Chandra, Raymond L. Chambers

Faculty of Engineering and Information Sciences - Papers: Part A

Survey data often contain measurements for variables that are semicontinuous in nature, i.e. they either take a single fixed value (we assume this is zero) or they have a continuous, often skewed, distribution on the positive real line. Standard methods for small area estimation (SAE) based on the use of linearmixed models can be inefficient for such variables. We discuss SAE techniques for semicontinuous variables under a two part random effects model that allows for the presence of excess zeros as well as the skewed nature of the nonzero values of the response variable. In particular, we first model the …

Go to article

Comparing Nonparametric Tests Of Equality Of Means For Randomized Block Designs, Donald J. Best, J. C. W Rayner, Olivier Thas, Jan De Neve, David Allingham Jan 2016

Comparing Nonparametric Tests Of Equality Of Means For Randomized Block Designs, Donald J. Best, J. C. W Rayner, Olivier Thas, Jan De Neve, David Allingham

Faculty of Engineering and Information Sciences - Papers: Part A

A number of nonparametric tests are compared empirically for a randomized block layout. We assess tests appropriate for when the data are not consistent with normality or when outliers invalidate traditional ANOVA tests. The objective is to assess, within this setting, tests that use ranks within blocks, the rank transform procedure that ranks the complete sample and continuous analogues of the Cochran-Mantel-Haenszel tests. The usual linear model is assumed, and our primary foci are tests of equality of means and component tests that assess linear and quadratic trends in the means. These tests include the traditional Page and Friedman tests. …

Go to article

Fractal Dual Substitution Tilings, Natalie P. Frank, Samuel B. Webster, Michael F. Whittaker Jan 2016

Fractal Dual Substitution Tilings, Natalie P. Frank, Samuel B. Webster, Michael F. Whittaker

Faculty of Engineering and Information Sciences - Papers: Part A

Starting with a substitution tiling, we demonstrate a method for constructing infinitely many new substitution tilings. Each of these new tilings is derived from a graph iterated function system and the tiles have fractal boundary. We show that each of the new tilings is mutually locally derivable to the original tiling. Thus, at the tiling space level, the new substitution rules are expressing geometric and combinatorial, rather than topological, features of the original. Our method is easy to apply to particular substitution tilings, permits experimentation, and can be used to construct border-forcing substitution rules. For a large class of examples …

Go to article

Students' Perceived Understanding And Competency In Probability Concepts In An E-Learning Environment: An Australian Experience, M Zamalia, Anne L. Porter Jan 2016

Students' Perceived Understanding And Competency In Probability Concepts In An E-Learning Environment: An Australian Experience, M Zamalia, Anne L. Porter

Faculty of Engineering and Information Sciences - Papers: Part A

Student understanding and competency in probability have been investigated from different perspectives. Competency is often measured in the form of tests. The purpose of this study was to investigate whether perceived understanding and competency can be calibrated and assessed together using Rasch measurement tools. The study comprised 44 students who enrolled in the STAT131 Understanding Uncertainty and Variation course at University of Wollongong, Australia. Their voluntary participation in the study was through the e-learning Moodle platform where tests and assessment were administered online. Data were analysed using the Rasch measurement models. The study revealed majority of the students had little …

Go to article

Patient Specific Quality Control For Stereotactic Ablative Body Radiotherapy (Sabr): It Takes More Than One Phantom, Tomas Kron, E Ungureanu, R Antony, Nicholas G. Hardcastle, Natalie Clements, J Ukath, C Fox, P Lonski, Derrick M. Wanigaratne, Annette Haworth Jan 2016

Patient Specific Quality Control For Stereotactic Ablative Body Radiotherapy (Sabr): It Takes More Than One Phantom, Tomas Kron, E Ungureanu, R Antony, Nicholas G. Hardcastle, Natalie Clements, J Ukath, C Fox, P Lonski, Derrick M. Wanigaratne, Annette Haworth

Faculty of Engineering and Information Sciences - Papers: Part A

Stereotactic Ablative Body Radiotherapy (SABR) is an extension of the concepts of Stereotactic Radiosurgery from intracranial procedures to extracranial targets. This brings with it new technological challenges for set-up of a SABR program and continuing quality assurance. Compared with intracranial procedures SABR requires consideration of motion and inhomogeneities and has to deal with a much larger variety of targets ranging from lung to liver, kidney and bone. To meet many of the challenges virtually all advances in modern radiotherapy, such as Intensity Modulated and Image Guided Radiation Therapy (IMRT and IGRT) are used. Considering the few fractions and high doses …

Go to article

Atlas-Based Segmentation Technique Incorporating Inter-Observer Delineation Uncertainty For Whole Breast, Lauren Bell, Jason Dowling, Elise M. Pogson, Peter E. Metcalfe, Lois C. Holloway Jan 2016

Atlas-Based Segmentation Technique Incorporating Inter-Observer Delineation Uncertainty For Whole Breast, Lauren Bell, Jason Dowling, Elise M. Pogson, Peter E. Metcalfe, Lois C. Holloway

Faculty of Engineering and Information Sciences - Papers: Part A

Accurate, efficient auto-segmentation methods are essential for the clinical efficacy of adaptive radiotherapy delivered with highly conformal techniques. Current atlas based auto-segmentation techniques are adequate in this respect, however fail to account for inter-observer variation. An atlas-based segmentation method that incorporates inter-observer variation is proposed. This method is validated for a whole breast radiotherapy cohort containing 28 CT datasets with CTVs delineated by eight observers. To optimise atlas accuracy, the cohort was divided into categories by mean body mass index and laterality, with atlas' generated for each in a leave-one-out approach. Observer CTVs were merged and thresholded to generate an …

Go to article

Retained Austenite: Transformation-Induced Plasticity, Elena V. Pereloma, Azdiar A. Gazder, Ilana B. Timokhina Jan 2016

Retained Austenite: Transformation-Induced Plasticity, Elena V. Pereloma, Azdiar A. Gazder, Ilana B. Timokhina

Faculty of Engineering and Information Sciences - Papers: Part A

The deformation-induced phase transformation of metastable austenite to martensite is accompanied by macroscopic plastic strain and results in significant work hardening and the delayed onset of necking. Steels that exhibit such transformation-induced plasticity (TRIP) effect possess high strength-ductility ratios and improved toughness. Since the stability of the retained austenite (RA) phase is the rate controlling mechanism for the TRIP effect, the factors affecting the chemical and mechanical stability of RA in CMnSi TRIP steels are discussed. It was suggested that chemical stability plays a more important role at low strains, whereas other factors become responsible for RA behavior at higher …

Go to article

Impact Resistance Of Ultra-High Strength Concrete Beams With Frp Reinforcement, Alex M. Remennikov, Matthew Goldston, M Neaz Sheikh Jan 2016

Impact Resistance Of Ultra-High Strength Concrete Beams With Frp Reinforcement, Alex M. Remennikov, Matthew Goldston, M Neaz Sheikh

Faculty of Engineering and Information Sciences - Papers: Part A

Composite materials, including Fibre Reinforced Polymer (FRP) bars, have been used for decades in the structural and civil engineering sectors over traditional steel reinforcement. The main reasons for this are that FRP composites possess a number of advantages. They are non-corrosive, non-conductive, and lightweight and possess high longitudinal tensile strength. This paper presents the results of an experimental investigation into the effects of the use of glass FRP (GFRP) bars as internal reinforcement on the behaviour of concrete beams with high strength concrete (HSC) and ultra-high strength concrete (UHSC). Both static and dynamic (impact) behaviours of the beam have been …

Go to article

Automatic Program Generation For Welding Robots From Cad, Nathan P. Larkin, Andrew Short, Zengxi Stephen Pan, Stephen Van Duin Jan 2016

Automatic Program Generation For Welding Robots From Cad, Nathan P. Larkin, Andrew Short, Zengxi Stephen Pan, Stephen Van Duin

Faculty of Engineering and Information Sciences - Papers: Part A

Industrial robotic automation is a key tool for manufacturing companies to achieve flexibility and low production costs. However, the cost associated with re-programming limits the economic viability for low production volumes. Automated Offline Programming is an approach that uses software algorithms to generate robot programs with little or no human effort. This contrasts with typical programming methods that require considerable human effort from highly skilled operators. This paper presents an Automated Offline Programming solution developed for a steel fabrication company and details the motion planning algorithms. It also describes a novel technique to decompose the welding path motion planning problem …

Go to article

Recent Progress On Sampling Based Dynamic Motion Planning Algorithms, Andrew Short, Zengxi Stephen Pan, Nathan P. Larkin, Stephen Van Duin Jan 2016

Recent Progress On Sampling Based Dynamic Motion Planning Algorithms, Andrew Short, Zengxi Stephen Pan, Nathan P. Larkin, Stephen Van Duin

Faculty of Engineering and Information Sciences - Papers: Part A

This paper reviews recent developments extending sampling based motion planning algorithms to operate in dynamic environments. Sampling based planners provide an effective approach for solving high degree of freedom robot motion planning problems. The two most common algorithms are the Probabilistic Roadmap Method and Rapidly Exploring Random Trees. These standard techniques are well established, however they assume a fully known environment and generate paths ahead of time. For realistic applications a robot may be required to update its path in real-time as information is gained or obstacles change position. Variants of these standard algorithms designed for dynamic environments are categorically …

Go to article

Team Uow Solar Decathlon House: Refurbishment Demonstration, Zhenjun Ma, Rui Yan, Massimo Fiorentini, Paul Cooper Jan 2016

Team Uow Solar Decathlon House: Refurbishment Demonstration, Zhenjun Ma, Rui Yan, Massimo Fiorentini, Paul Cooper

Faculty of Engineering and Information Sciences - Papers: Part A

This paper describes a practical demonstration of how to refurbish a typical Australian timber framed fibro house to become a net-zero energy, Solar Decathlon (SD) home. The Team UOW Illawarra Flame House was entered in the SD China 2013 competition and was eventually the overall winner of the competition. The house refurbishment method was illustrated initially through architectural changes to the design of the nominal original house in order to improve functionality, daylighting and natural ventilation. Energy simulations for the original house and the house with the architectural refurbishment were then carried out to determine the thermal envelope retrofit targets …

Go to article

Characterisation And Resource Development Of Steel Plant By-Product Streams, Raymond Longbottom, Brian J. Monaghan, Guangqing Zhang, Sheng Chew, David J. Pinson Jan 2016

Characterisation And Resource Development Of Steel Plant By-Product Streams, Raymond Longbottom, Brian J. Monaghan, Guangqing Zhang, Sheng Chew, David J. Pinson

Faculty of Engineering and Information Sciences - Papers: Part A

The recycling of steel plant by-products is a critical issue that needs thorough assessment and development for the sustainability of the integrated steel plant, from both environmental and economical perspectives. Research is being undertaken in the Steel Research Hub that aims to realise the value of by-products to the Australian steel industry and minimise the amount of by-product going to long term stockpile. As the first step, dust from basic oxygen steelmaking (BOS), a major steel plant by-product stream, is being characterised so that its potential use on plant or elsewhere can be assessed and evaluated. BOS dust contains components …

Go to article

On The Classical Solvability Of Near Field Reflector Problems, Jiakun Liu, Neil Trudinger Jan 2016

On The Classical Solvability Of Near Field Reflector Problems, Jiakun Liu, Neil Trudinger

Faculty of Engineering and Information Sciences - Papers: Part A

In this paper we prove the existence of classical solutions to near field reflector problems, both for a point light source and for a parrallel light source, with planar recievers. These problems involve monge-Ampere type equations, subject to nonlinear oblique boundary conditions. Our approach builds on earlier work in the optimal transportation case by Trudinger and Wang and makes use of a recent extension of degree theory to oblique boundary conditioins by Li, Liu and Nguyen.

Go to article

Laccase-Syringaldehyde-Mediated Degradation Of Trace Organic Contaminants In An Enzymatic Membrane Reactor: Removal Efficiency And Effluent Toxicity, Luong N. Nguyen, Jason P. Van De Merwe, Faisal I. Hai, Frederic D.L Leusch, Jinguo Kang, William E. Price, Felicity Roddick, Saleh F. Magram, Long D. Nghiem Jan 2016

Laccase-Syringaldehyde-Mediated Degradation Of Trace Organic Contaminants In An Enzymatic Membrane Reactor: Removal Efficiency And Effluent Toxicity, Luong N. Nguyen, Jason P. Van De Merwe, Faisal I. Hai, Frederic D.L Leusch, Jinguo Kang, William E. Price, Felicity Roddick, Saleh F. Magram, Long D. Nghiem

Faculty of Engineering and Information Sciences - Papers: Part A

Redox-mediators such as syringaldehyde (SA) can improve laccase-catalyzed degradation of trace organic contaminants (TrOCs) but may increase effluent toxicity. The degradation performance of 14 phenolic and 17 non-phenolic TrOCs by a continuous flow enzymatic membrane reactor (EMR) at different TrOC and SA loadings was assessed. A specific emphasis was placed on the investigation of the toxicity of the enzyme (laccase), SA, TrOCs and the treated effluent. Batch tests demonstrated significant individual and interactive toxicity of the laccase and SA preparations. Reduced removal of resistant TrOCs by the EMR was observed for dosages over 50. μg/L. SA addition at a concentration …

Go to article

Lubrication Characterisation Analysis Of Stainless Steel Foil During Micro Rolling, Haibo Xie, Kenichi Manabe, Tsuyoshi Furushima, Kazuo Tada, Zhengyi Jiang Jan 2016

Lubrication Characterisation Analysis Of Stainless Steel Foil During Micro Rolling, Haibo Xie, Kenichi Manabe, Tsuyoshi Furushima, Kazuo Tada, Zhengyi Jiang

Faculty of Engineering and Information Sciences - Papers: Part A

Physical parameters, such as microscopic and roughness, play important roles in microforming process due to an increasing ratio of surface to volume of the deformed material. The study on lubrication characterisation in microforming is getting more attractive to researchers because traditional models are not reliable in this scaled down process. In this study, the micro rolling deformation characterisation has been investigated on SUS 304 stainless steel considering lubricant effect and feature size effect. The foil thickness plays an important role in the tribological features of micro rolling. The evolutions of both oil film thickness and foil surface are analysed accordingly. …

Go to article

Certificate-Based Encryption With Keyword Search Enabling Secure Authorization In Electronic Health Record, Clementine Gritti, Willy Susilo, Thomas Plantard Jan 2016

Certificate-Based Encryption With Keyword Search Enabling Secure Authorization In Electronic Health Record, Clementine Gritti, Willy Susilo, Thomas Plantard

Faculty of Engineering and Information Sciences - Papers: Part B

In an e-Health scenario, we study how the practitioners are authorized when they are requesting access to medical documents containing sensitive information. Consider the following scenario. A clinician wants to access and retrieve a patient's Electronic Health Record (EHR), and this means that the clinician must acquire sufficient access right to access this document. As the EHR is within a collection of many other patients, the clinician would need to specify some requirements (such as a keyword) which match the patient's record, as well as having a valid access right. The complication begins when we do not want the server …

Go to article

Characterisation Of Steelplant By-Products To Realise The Value Of Fe And Zn, Raymond Longbottom, Brian J. Monaghan, Guangqing Zhang, Sheng Chew, David J. Pinson Jan 2016

Characterisation Of Steelplant By-Products To Realise The Value Of Fe And Zn, Raymond Longbottom, Brian J. Monaghan, Guangqing Zhang, Sheng Chew, David J. Pinson

Faculty of Engineering and Information Sciences - Papers: Part B

Recycling of steel plant by-products is a critical area that needs careful assessment and development if the integrated steel plant is to remain environmentally and economically sustainable into the future. A research program is being embarked upon in the Australian Steel Research Hub with aims to realise the value of the by-products to the Australian Steel industry and minimise volumes being stockpiled. As a first step, key by-product streams (such as blast furnace, BOS and sinter dusts) are being evaluated and characterised so that their potential uses in-plant or elsewhere can be assessed/evaluated. These streams contain components including iron and …

Go to article

Membrane Scaling And Prevention Techniques During Seawater Desalination By Air Gap Membrane Distillation, Hung Duong, Mikel C. Duke, Stephen Gray, Paul Cooper, Long D. Nghiem Jan 2016

Membrane Scaling And Prevention Techniques During Seawater Desalination By Air Gap Membrane Distillation, Hung Duong, Mikel C. Duke, Stephen Gray, Paul Cooper, Long D. Nghiem

Faculty of Engineering and Information Sciences - Papers: Part B

Membrane scaling and mitigation techniques during air gap membrane distillation (AGMD) of seawater were investigated. The results showed a strong influence of AGMD operating temperature on not only the process water flux but also membrane scaling and subsequent cleaning efficiency. Elevating feed/coolant temperature from 35/25 to 60/50 °C increased water flux, but also exacerbated membrane scaling of the AGMD process. Membrane scaling was more severe, and occurred at a lower water recovery (68%) when operating at 60/50 °C compared to 35/25 °C (78%) due to increased concentration polarisation effect. Operating temperature also affected the efficiency of the subsequent membrane cleaning. …

Go to article

An Analytical Approximation Formula For European Option Pricing Under A New Stochastic Volatility Model With Regime-Switching, Xinjiang He, Song-Ping Zhu Jan 2016

An Analytical Approximation Formula For European Option Pricing Under A New Stochastic Volatility Model With Regime-Switching, Xinjiang He, Song-Ping Zhu

Faculty of Engineering and Information Sciences - Papers: Part B

In this paper, an analytical approximation formula for pricing European options is obtained under a newly proposed hybrid model with the volatility of volatility in the Heston model following a Markov chain, the adoption of which is motivated by the empirical evidence of the existence of regime-switching in real markets. We first derive the coupled PDE (partial differential equation) system that governs the European option price, which is solved with the perturbation method. It should be noted that the newly derived formula is fast and easy to implement with only normal distribution function involved, and numerical experiments confirm that our …

Go to article

Modeling And Identification Of A Realistic Spiking Neural Network And Musculoskeletal Model Of The Human Arm, And An Application To The Stretch Reflex, Manish Sreenivasa, Ko Ayusawa, Yoshihiko Nakamura Jan 2016

Modeling And Identification Of A Realistic Spiking Neural Network And Musculoskeletal Model Of The Human Arm, And An Application To The Stretch Reflex, Manish Sreenivasa, Ko Ayusawa, Yoshihiko Nakamura

Faculty of Engineering and Information Sciences - Papers: Part B

This study develops a multi-level neuromuscular model consisting of topological pools of spiking motor, sensory and interneurons controlling a bi-muscular model of the human arm. The spiking output of motor neuron pools were used to drive muscle actions and skeletal movement via neuromuscular junctions. Feedback information from muscle spindles were relayed via monosynaptic excitatory and disynaptic inhibitory connections, to simulate spinal afferent pathways. Subject-specific model parameters were identified from human experiments by using inverse dynamics computations and optimization methods. The identified neuromuscular model was used to simulate the biceps stretch reflex and the results were compared to an independent dataset. …

Go to article

Towards Organizing Smart Collaboration And Enhancing Teamwork Performance: A Ga-Supported System Oriented To Mobile Learning Through Cloud-Based Online Course, Geng Sun, Jun Shen Jan 2016

Towards Organizing Smart Collaboration And Enhancing Teamwork Performance: A Ga-Supported System Oriented To Mobile Learning Through Cloud-Based Online Course, Geng Sun, Jun Shen

Faculty of Engineering and Information Sciences - Papers: Part A

At present, people’s learning styles become diverse, for which mobile learning is a significant trend that enables distributed learners to achieve collaborative learning and allows them to be engaged in virtual teams to work together. In this research, we develop a system to cope with the problem in current mobile learning circumstance, where learners in virtual teams generally lack proper communications, guidance and assistances between each other. Following the theory of Kolb team learning experience, we use our system, Teamwork as a Service (TaaS), to work in conjunction with cloud-based learning management systems. This system targets at organizing a series …

Go to article

First Prev Next Last