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Full-Text Articles in Social and Behavioral Sciences
A Decentralized Latency-Aware Task Allocation And Group Formation Approach With Fault Tolerance For Iot Applications, Muhammad Mudassar, Yanlong Zhai, Lejian Liao, Jun Shen
A Decentralized Latency-Aware Task Allocation And Group Formation Approach With Fault Tolerance For Iot Applications, Muhammad Mudassar, Yanlong Zhai, Lejian Liao, Jun Shen
Faculty of Engineering and Information Sciences - Papers: Part B
Development of internet of things (IoT) and smart devices eased life by offering numerous applications targeting to provide real-time low latency services, but they also brought challenges in handling huge data generated from the powerful computations, to get a job done. Decentralized edge computing could help to achieve latency requirements of the applications by executing them closer to the user at edge of network, but most of the current studies actually deployed centralized approaches for cluster computing at edge, which put extra overhead of cluster formation and management. In this article, we propose to group heterogeneous edge nodes on task …
A New Approach To Keep The Privacy Information Of The Signer In A Digital Signature Scheme, Dung Hoang Duong, Willy Susilo, Viet Cuong Trinh
A New Approach To Keep The Privacy Information Of The Signer In A Digital Signature Scheme, Dung Hoang Duong, Willy Susilo, Viet Cuong Trinh
Faculty of Engineering and Information Sciences - Papers: Part B
In modern applications, such as Electronic Voting, e-Health, e-Cash, there is a need that the validity of a signature should be verified by only one responsible person. This is opposite to the traditional digital signature scheme where anybody can verify a signature. There have been several solutions for this problem, the first one is we combine a signature scheme with an encryption scheme; the second one is to use the group signature; and the last one is to use the strong designated verifier signature scheme with the undeniable property. In this paper, we extend the traditional digital signature scheme to …
The Role Of Particle Shape On The Hydraulic Conductivity Of Granular Soils Captured Through Kozeny-Carman Approach, Thanh Trung Nguyen, Buddhima Indraratna
The Role Of Particle Shape On The Hydraulic Conductivity Of Granular Soils Captured Through Kozeny-Carman Approach, Thanh Trung Nguyen, Buddhima Indraratna
Faculty of Engineering and Information Sciences - Papers: Part B
Previous studies indicate that particle shape plays an important role in the hydraulic conductivity (k) of granular materials, often represented through the Kozeny-Carman (KC) concept. Several recent studies have improved the accuracy of the KC approach using the particle size distribution (PSD) to estimate the specific surface area of particles but overly simplifying the effect of particle shape. This current study innovatively adopts the Micro-Computed Tomography (CT) technique to compute particle shape parameters of different granular materials (e.g., glass beads, sand and crushed gravel) and then incorporate these parameters into the KC equation to estimate k more accurately, which is …
Pricing Of Barrier Options On Underlying Assets With Jump-Diffusion Dynamics: A Mellin Transform Approach, Marianito R. Rodrigo
Pricing Of Barrier Options On Underlying Assets With Jump-Diffusion Dynamics: A Mellin Transform Approach, Marianito R. Rodrigo
Faculty of Engineering and Information Sciences - Papers: Part B
A barrier option is an exotic path-dependent option contract where the right to buy or sell is activated or extinguished when the underlying asset reaches a certain barrier price during the lifetime of the contract. In this article we use a Mellin transform approach to derive exact pricing formulas for barrier options with general payoffs and exponential barriers on underlying assets that have jump-diffusion dynamics. With the same approach we also price barrier options on underlying futures contracts.
Robust Extended H∞ Control Strategy Using Linear Matrix Inequality Approach For Islanded Microgrid, Maniza Armin, Mizanur Rahman, Md Mukidur Rahman, Subrata K. Sarker, Sajal Das, Md Rabiul Islam, Abbas Z. Kouzani, M. A Parvez Mahmud
Robust Extended H∞ Control Strategy Using Linear Matrix Inequality Approach For Islanded Microgrid, Maniza Armin, Mizanur Rahman, Md Mukidur Rahman, Subrata K. Sarker, Sajal Das, Md Rabiul Islam, Abbas Z. Kouzani, M. A Parvez Mahmud
Faculty of Engineering and Information Sciences - Papers: Part B
This paper presents the design of an extended parameterisations of H∞ controller for off grid operation of a microgrid. The microgrid consists of distributed generation units, filters and local loads. The filters are used to achieve accurate sinusoidal output voltage. However, loads which are connected to the microgrid are parametrically uncertain. Hence, it undergoes with unknown loads uncertainties. These unknown loads may create unknown loads harmonics, non-linearities which may reduce the voltage and current profile of the microgrid. As a result, the sudden rise and fall of voltage current profile damages the domestic and commercial loads. The proposed controller provides …
On Masking And Releasing Smart Meter Data At Micro-Level: The Multiplicative Noise Approach, John Brackenbury, P. Y. O'Shaughnessy, Yan-Xia Lin
On Masking And Releasing Smart Meter Data At Micro-Level: The Multiplicative Noise Approach, John Brackenbury, P. Y. O'Shaughnessy, Yan-Xia Lin
Faculty of Engineering and Information Sciences - Papers: Part B
Smart meter electricity data presents privacy risks when malicious agents gain insights of private information, including residents’ lifestyle and daily habits. When allowing access to record-level data, we apply the multiplicative noise method to mask individual smart meter data, which simultaneously aims to minimise disclosure of a dwelling’s consumption signal to any third party and to enable accurate estimation of the sum of a cluster of households. Three testing criteria are introduced to measure the performance of multiplicative noise masking approach relevant to the smart meter data. We propose a novel ‘Twin Uniform’ noise distribution and derive relevant theoretical results. …
Can Digital Media Affect The Learning Approach Of Medical Students?, Sonali Prashant Chonker, Hester Lau Chang Qi, Tam C. Ha, Melissa Lim, Mor Jack Ng, Kok Hian Tan
Can Digital Media Affect The Learning Approach Of Medical Students?, Sonali Prashant Chonker, Hester Lau Chang Qi, Tam C. Ha, Melissa Lim, Mor Jack Ng, Kok Hian Tan
Faculty of Social Sciences - Papers (Archive)
Background: Students' learning approaches have revealed that deep learning approach has a positive impact on academic performance. There are suggestions of a waning interest in deep learning to surface learning. Aim: To assess if digital media can reduce the incidence of surface learning approach among medical students Method: A digital video introducing three predominant learning approaches (deep, strategic, surface) was shown to medical students between March 2015 and January 2017. The Approaches and Study Skills Inventory for Students (ASSIST), was administered at the beginning and end of their clinical attachment, to determine if there were any changes to the predominant …
Proposing A Haptic Approach To Facilitating L2 Learners' Pragmatic Competence, Michael S. Burri, Amanda Ann Baker, William Acton
Proposing A Haptic Approach To Facilitating L2 Learners' Pragmatic Competence, Michael S. Burri, Amanda Ann Baker, William Acton
Faculty of Social Sciences - Papers (Archive)
Pragmatic competence plays a critical role in successful communication. Pragmatics in the second language classroom has received substantial interest in TESOL, yet teachers often find the teaching of pragmatics challenging. Instruction generally tends to focus on grammar and vocabulary development, even though pragmatics is closely linked to the sound system (i.e., phonology) of the language. An effective method should combine attention to both pragmatic and phonological competence. We propose an integrated approach, drawing on haptic (movement and touch) pronunciation teaching techniques (Acton, Baker, Burri & Teaman, 2013) to facilitate study and uptake of pragmatics in the classroom. In part by …
Building Conceptual Knowledge Of Fraction Operations Among Pre-Service Teachers: Effect Of A Representation-Based Teaching Approach Within A Teacher Education Program, Elise J. Thurtell, Patricia A. Forrester, Mohan Chinnappan
Building Conceptual Knowledge Of Fraction Operations Among Pre-Service Teachers: Effect Of A Representation-Based Teaching Approach Within A Teacher Education Program, Elise J. Thurtell, Patricia A. Forrester, Mohan Chinnappan
Faculty of Social Sciences - Papers (Archive)
A deep understanding of fraction concepts and operations is necessary if pre-service teachers (PSTs) are to present the concepts in multiple forms to learners. Such an understanding needs to be grounded in rich conceptual knowledge. In the present study, we explore the development of this understanding by supporting a cohort of 103 PSTs, who had previously demonstrated poor conceptual understanding of fraction concepts and operations, with a Representational Reasoning in Teaching and Learning (RRTL) approach aimed at strengthening their conceptual knowledge. A comparison of pre- and post-test results indicated that participants showed a significant improvement in shifting the balance of …
Towards An Assessment Framework Of Reuse: A Knowledge Level Analysis Approach, Ghassan Beydoun, Achim Hoffmann, Rafael Valencia-Garcia, Jun Shen, Asifqumer Gill
Towards An Assessment Framework Of Reuse: A Knowledge Level Analysis Approach, Ghassan Beydoun, Achim Hoffmann, Rafael Valencia-Garcia, Jun Shen, Asifqumer Gill
Faculty of Engineering and Information Sciences - Papers: Part B
The process of assessing the suitability of reuse of a software component is complex. Indeed, software systems are typically developed as an assembly of existing components. The complexity of the assessment process is due to lack of clarity on how to compare the cost of adaptation of an existing component versus the cost of developing it from scratch. Indeed, often pursuit of reuse can lead to excessive rework and adaptation, or developing suites of components that often get neglected. This paper is an important step towards modelling the complex reuse assessment process. To assess the success factors that can underpin …
A Numerical Approach To Design The Kretschmann Configuration Based Refractive Index Graphene-Mos2 Hybrid Layers With Tio2-Sio2 Nano For Formalin Detection, Md. Biplob Hossain, Tamanna Tasnim, Lway Abdulrazak, Md Masud Rana, Md Rabiul Islam
A Numerical Approach To Design The Kretschmann Configuration Based Refractive Index Graphene-Mos2 Hybrid Layers With Tio2-Sio2 Nano For Formalin Detection, Md. Biplob Hossain, Tamanna Tasnim, Lway Abdulrazak, Md Masud Rana, Md Rabiul Islam
Faculty of Engineering and Information Sciences - Papers: Part B
In this paper, a Kretschmann configuration based surface plasmon resonance (SPR) sensor is numerically designed using graphene-MoS2 hybrid structure TiO2-SiO2 nano particles for formalin detection. In this design, the observations of SPR angle versus minimum reflectance and SPR frequency (FSPR) versus maximum transmittance (Tmax) are considered. The chitosan is used as probe legend to perform reaction with the formalin (40% formaldehyde) which acts as target legend. In this paper, both graphene and MoS2 are used as biomolecular acknowledgment element (BAE) and TiO2 as well as SiO2 bilayers is used to improve the sensitivity of the sensor. The numerical results show …
Mixed Convection Of Non-Newtonian Nanofluid In An H-Shaped Cavity With Cooler And Heater Cylinders Filled By A Porous Material: Two Phase Approach, Zhixiong Li, Pouya Barnoon, Davood Toghraie, Reza Balali Dehkordi, Masoud Afrand
Mixed Convection Of Non-Newtonian Nanofluid In An H-Shaped Cavity With Cooler And Heater Cylinders Filled By A Porous Material: Two Phase Approach, Zhixiong Li, Pouya Barnoon, Davood Toghraie, Reza Balali Dehkordi, Masoud Afrand
Faculty of Engineering and Information Sciences - Papers: Part B
In the present problem, two-phase mixed convection of a non-Newtonian nanofluid in a porous H-shaped cavity is studied. Inside the enclosure there are four rotating cylinders, using the Boussinesq approximation, mixed convection is created. Nanofluid includes H2O + 0.5% CMC and copper oxide nanoparticles. The mixture model was used to model physical phenomena. Different aspect ratios were used in order to achieve the best heat transfer rate. The Darcy and Richardson numbers ranges are 10−4 ≤ Da ≤ 10−2 and 1 ≤ Ri ≤ 100 respectively. Also, the aspect ratio and dimensionless angular velocities of cylinders ranges are 1.4 ≤ …
Connecting And Collaborating Across Oceania And Its Diaspora: A Shared Approach To Meaningful Development And Engagement, Jioji Ravulo
Connecting And Collaborating Across Oceania And Its Diaspora: A Shared Approach To Meaningful Development And Engagement, Jioji Ravulo
Faculty of Social Sciences - Papers (Archive)
Through this short, critical piece, I, as someone who comes from an Indigenous Pacific heritage, aim to challenge the way in which mainstream society positions societal problems as siloed, isolated from a structural, collective understanding of societal problems generally evident in Indigenous epistemologies. I suggest that by using an anti-oppressive social work practice approach where power imbalances are examined and understood within a wider context, we, as a Pacific community, are better equipped to create strategies and solutions that are inclusive of those traditionally not included in the conversation for change. We need to promote the importance of creating a …
Lessons From The Aime Approach To The Teaching Relationship: Valuing Biepistemic Practice, Samantha Mcmahon, Valerie Harwood, Gawaian Bodkin-Andrews, Sarah Elizabeth O'Shea, Anthony D. Mcknight, Paul A. Chandler, Amy Priestly
Lessons From The Aime Approach To The Teaching Relationship: Valuing Biepistemic Practice, Samantha Mcmahon, Valerie Harwood, Gawaian Bodkin-Andrews, Sarah Elizabeth O'Shea, Anthony D. Mcknight, Paul A. Chandler, Amy Priestly
Faculty of Social Sciences - Papers (Archive)
The Australian Indigenous Mentoring Experience (AIME) is a national, extra-curricular mentoring programme that is closing the educational gap for young Indigenous Australians. So what is AIME doing that is working so well? This article draws on a large-scale classroom ethnography to describe the pedagogies that facilitate the teacher-student relationships in this programme. We use Shawn Wilson's theorisation of Indigenous ways of knowing in order to 'unpack' how these approaches succeeded in creating the egalitarian and trust-filled relationships reportedly experienced in the AIME programme.
Iei-Emf Provocation Case Studies: A Novel Approach To Testing Sensitive Individuals. Bioelectromagnetics, Adam Verrender, Sarah P. Loughran, Lena Hillert, Gideon Rubin, Rodney J. Croft
Iei-Emf Provocation Case Studies: A Novel Approach To Testing Sensitive Individuals. Bioelectromagnetics, Adam Verrender, Sarah P. Loughran, Lena Hillert, Gideon Rubin, Rodney J. Croft
Faculty of Social Sciences - Papers (Archive)
No abstract provided.
Multi-Objective Search-Based Approach To Estimate Issue Resolution Time, Wisam Al-Zubaidi, Hoa K. Dam, Aditya K. Ghose, Xiaodong Li
Multi-Objective Search-Based Approach To Estimate Issue Resolution Time, Wisam Al-Zubaidi, Hoa K. Dam, Aditya K. Ghose, Xiaodong Li
Faculty of Engineering and Information Sciences - Papers: Part B
Background: Resolving issues is central to modern agile software development where a software is developed and evolved incrementally through series of issue resolutions. An issue could represent a requirement for a new functionality, a report of a software bug or a description of a project task. Aims: Knowing how long an issue will be resolved is thus important to different stakeholders including end-users, bug reporters, bug triagers, developers and managers. This paper aims to propose a multi-objective search-based approach to estimate the time required for resolving an issue. Methods: Using genetic programming (a meta-heuristic optimization method), we iteratively generate candidate …
A Decomposition Approach Via Fourier Sine Transform For Valuing American Knock-Out Options With Rebates, Nhat Tan Le, Duy-Minh Dang, Tran Vu Khanh
A Decomposition Approach Via Fourier Sine Transform For Valuing American Knock-Out Options With Rebates, Nhat Tan Le, Duy-Minh Dang, Tran Vu Khanh
Faculty of Engineering and Information Sciences - Papers: Part A
We present an innovative decomposition approach for computing the price and the hedging parameters of American knock-out options with a time-dependent rebate. Our approach is built upon: (i) the Fourier sine transform applied to the partial differential equation with a finite time-dependent spatial domain that governs the option price, and (ii) the decomposition technique that partitions the price of the option into that of the European counterpart and an early exercise premium. Our analytic representations can generalize a number of existing decomposition formulas for some European-style and American-style options. A complexity analysis of the method, together with numerical results, show …
A Qr Code Watermarking Approach Based On The Dwt-Dct Technique, Yang-Wai Chow, Willy Susilo, Joseph Tonien, Wei Zong
A Qr Code Watermarking Approach Based On The Dwt-Dct Technique, Yang-Wai Chow, Willy Susilo, Joseph Tonien, Wei Zong
Faculty of Engineering and Information Sciences - Papers: Part B
The rapid growth in Internet and communication technology has facilitated an escalation in the exchange of digital multimedia content. This has resulted in an increase in copyright infringement, which has led to a greater demand for more robust copyright protection mechanisms. Digital watermarking is a means of detecting ownership and illegal use of digital products. This paper presents an approach to watermarking images by embedding QR code information in a digital image.
A Consumer-Oriented Decision-Making Approach For Selecting The Cloud Storage Service: From Paprika Perspective, Salim Al Isma'ili, Mengxiang Li, Jun Shen, Qiang He
A Consumer-Oriented Decision-Making Approach For Selecting The Cloud Storage Service: From Paprika Perspective, Salim Al Isma'ili, Mengxiang Li, Jun Shen, Qiang He
Faculty of Engineering and Information Sciences - Papers: Part B
In recent years there is a growth in the number of companies that offers cloud storage solutions. From user’s perspectives, it is becoming a challenging task to choose which cloud storage to use and from whom, based on user’s needs. In this context, no framework can evaluate the decision criteria for selection of cloud storage services. This paper proposes a solution to this problem by identifying the cloud storage criteria and introduces the PAPRIKA approach for measuring the criteria of cloud storage based on client’s preference. This work demonstrated the applicability of the framework (decision model) by testing it with …
From Bim (Building Information Modelling) To Bem (Building Energy Modelling): A Collaborative Approach, Emma Elizabeth Heffernan, Mohammed I. Sohel, Scott F. Beazley, Timothy J. Mccarthy
From Bim (Building Information Modelling) To Bem (Building Energy Modelling): A Collaborative Approach, Emma Elizabeth Heffernan, Mohammed I. Sohel, Scott F. Beazley, Timothy J. Mccarthy
Faculty of Engineering and Information Sciences - Papers: Part B
The use of simulation to predict building energy performance has been shown to have significant benefits in terms of reducing energy consumption and greenhouse gas emissions. However, in terms of implementation, the process can be disjointed and messy, with a lack of integration between architects and engineers. For the process of creating a building energy simulation to be more efficient, a seamless transition from an architectural design to an energy model is required. This paper highlights some of the practical issues manifest in the process of data exchange for energy analysis. It presents a proposed workflow for the exchange of …
Symptom Endorsement In Men Versus Women With A Diagnosis Of Depression: A Differential Item Functioning Approach, Anna Cavanagh, Coralie J. Wilson, Peter Caputi, David J. Kavanagh
Symptom Endorsement In Men Versus Women With A Diagnosis Of Depression: A Differential Item Functioning Approach, Anna Cavanagh, Coralie J. Wilson, Peter Caputi, David J. Kavanagh
Faculty of Social Sciences - Papers (Archive)
Background: There is some evidence that, in contrast to depressed women, depressed men tend to report alternative symptoms that are not listed as standard diagnostic criteria. This may possibly lead to an under- or misdiagnosis of depression in men. Aims: This study aims to clarify whether depressed men and women report different symptoms. Methods: This study used data from the 2007 Australian National Survey of Mental Health and Wellbeing that was collected using the World Health Organization's Composite International Diagnostic Interview. Participants with a diagnosis of a depressive disorder with 12-month symptoms (n = 663) were identified and included in …
Moving Beyond Body Image: A Socio-Critical Approach To Teaching About Health And Body Size, Jan Wright, Deana Leahy
Moving Beyond Body Image: A Socio-Critical Approach To Teaching About Health And Body Size, Jan Wright, Deana Leahy
Faculty of Social Sciences - Papers (Archive)
Concerns about young people's (read, young women's) body dissatisfaction in schools have resulted in the introduction of programs promoting positive body Image in an effort to reduce eating disorders. These programs, informed by psychological or socio-psychological notions of the relations between self and bodies, seem to have considerable credibility in schools and in the academic Iiterature because of their authoritative underpinnings. In this chapter, we want to examine the ways in which such programs engage with discourses around bodies, fat, and size. For example, do they challenge discourses of weight-based oppression, create safe spaces for learning about weight and size, …
Policy Translation For Early Childhood Education And Care: The Growing Up In New Zealand Approach, Amy L. Bird, Polly E. Atatoa Carr, Elaine Reese, Susan Morton
Policy Translation For Early Childhood Education And Care: The Growing Up In New Zealand Approach, Amy L. Bird, Polly E. Atatoa Carr, Elaine Reese, Susan Morton
Faculty of Social Sciences - Papers (Archive)
Longitudinal cohort studies have significant potential to inform policy across a range of child and family areas, including early childhood education and care. Here we describe the relationship between policy-makers and New Zealand’s contemporary pre-birth cohort study. We outline a model for policy interaction that highlights the relationship between Growing Up and policy across study design, implementation and analysis. We then describe key policy-relevant questions in the early childhood education and care area that Growing Up has addressed when children were age 2. We used parent-report data for 6242 children to consider: whether socio-economic factors and ethnicity are related to …
Multivariate Spatial Covariance Models: A Conditional Approach, Noel A. Cressie, Andrew Zammit-Mangion
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 …
A Personal Constructivist Approach For Investigating The Patterns Of Dependency Of Adolescents With Autism Spectrum Disorder: Case Study Of Two Families, Elizabeth Kate Cridland, Peter Caputi, Beverly M. Walker, Sandra C. Jones, Christopher A. Magee
A Personal Constructivist Approach For Investigating The Patterns Of Dependency Of Adolescents With Autism Spectrum Disorder: Case Study Of Two Families, Elizabeth Kate Cridland, Peter Caputi, Beverly M. Walker, Sandra C. Jones, Christopher A. Magee
Faculty of Social Sciences - Papers (Archive)
This research investigated the utility and practicality of dependency grids for capturing and presenting the dependency distribution patterns of three adolescents with autism spectrum disorder. The investigation also involved family members to explore their level of awareness of the adolescents' dependency preferences. The grids were analyzed using a range of measures, including the uncertainty index and partial order scalogram analysis. Findings indicate the adolescents had various ways of dispersing their dependencies among their resources and differed in the types of support most used. Additionally, family members differed in their awareness of the adolescents' preferences. The benefits and drawbacks of the …
Vulnerability Analysis Of Hydrological Infrastructure To Flooding In Coastal Cities - A Graph Theory Approach, Robert Ighodaro Ogie, Tomas Holderness, Sarah Dunn, Etienne Turpin
Vulnerability Analysis Of Hydrological Infrastructure To Flooding In Coastal Cities - A Graph Theory Approach, Robert Ighodaro Ogie, Tomas Holderness, Sarah Dunn, Etienne Turpin
Faculty of Engineering and Information Sciences - Papers: Part A
Hydrological infrastructure such as pumps and floodgates are invaluable assets for mitigating flooding in coastal cities. These infrastructure components are often vulnerable to damage or failure due to the impact of flood waters, thus exacerbating the flood hazards and causing significant loss of life and destruction to property worth billions of dollars. Hence, there is a growing need worldwide to enhance the understanding of flood vulnerability and to develop key metrics for assessing it. This study proposes an approach for measuring the vulnerability of hydrological infrastructure to flood damage in coastal cities. In this approach, a hydrological infrastructure flood vulnerability …
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
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
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 …
A Subspace Projection Approach For Wall Clutter Mitigation In Through-The-Wall Radar Imaging, Fok Hing Chi Tivive, Abdesselam Bouzerdoum, Moeness Amin
A Subspace Projection Approach For Wall Clutter Mitigation In Through-The-Wall Radar Imaging, Fok Hing Chi Tivive, Abdesselam Bouzerdoum, Moeness Amin
Faculty of Engineering and Information Sciences - Papers: Part A
One of the main challenges in through-the-wall radar imaging (TWRI) is the strong exterior wall returns, which tend to obscure indoor stationary targets, rendering target detection and classification difficult, if not impossible. In this paper, an effective wall clutter mitigation approach is proposed for TWRI that does not require knowledge of the background scene nor does it rely on accurate modeling and estimation of wall parameters. The proposed approach is based on the relative strength of the exterior wall returns compared to behind-wall targets. It applies singular value decomposition to the data matrix constructed from the space-frequency measurements to identify …
A New Approach For Classification And Characterization Of Voltage Dips And Swells Using 3d Polarization Ellipse Parameters, Mollah R. Alam, Kashem M. Muttaqi, Abdesselam Bouzerdoum
A New Approach For Classification And Characterization Of Voltage Dips And Swells Using 3d Polarization Ellipse Parameters, Mollah R. Alam, Kashem M. Muttaqi, Abdesselam Bouzerdoum
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents a new method for classification and characterization of voltage dips and swells in electricity networks. The proposed method exploits unique signatures and parameters of three phase voltage signals extracted from the polarization ellipse in three-dimensional (3D) co-ordinates. Five ellipse parameters, which include azimuthal angle, elevation, tilt, semi-minor axis and semi-major axis, are used to classify and characterize voltage dips and swells. Seven types of voltage dips, which include a total of 19 groups of dips incorporating different kinds of balanced (three-phase dips) and unbalanced (single-phase or double-phase) dips, are identified and successfully classified using the 3D polarization …