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Articles 391 - 420 of 2936
Full-Text Articles in Social and Behavioral Sciences
Statistical Efficiency In Distance Sampling, Robert Graham Clark
Statistical Efficiency In Distance Sampling, Robert Graham Clark
Faculty of Engineering and Information Sciences - Papers: Part A
Distance sampling is a technique for estimating the abundance of animals or other objects in a region, allowing for imperfect detection. This paper evaluates the statistical efficiency of the method when its assumptions are met, both theoretically and by simulation. The theoretical component of the paper is a derivation of the asymptotic variance penalty for the distance sampling estimator arising from uncertainty about the unknown detection parameters. This asymptotic penalty factor is tabulated for several detection functions. It is typically at least 2 but can be much higher, particularly for steeply declining detection rates. The asymptotic result relies on a …
Purely Infinite Simple C*-Algebras That Are Principal Groupoid C*-Algebras, Jonathan H. Brown, Lisa Orloff Clark, Adam Sierakowski, Aidan Sims
Purely Infinite Simple C*-Algebras That Are Principal Groupoid C*-Algebras, Jonathan H. Brown, Lisa Orloff Clark, Adam Sierakowski, Aidan Sims
Faculty of Engineering and Information Sciences - Papers: Part A
From a suitable groupoid G, we show how to construct an amenable principal groupoid whose C*-algebra is a Kirchberg algebra which is KK-equivalent to C*(G). Using this construction, we show by example that many UCT Kirchberg algebras can be realised as the C*-algebras of amenable principal groupoids.
Investigation Of Hydrogen Assisted Cracking In Acicular Ferrite Using Site-Specific Micro-Fracture Tests, Walter L. Costin, Oliver Lavigne, Andrei Kotousov, Reza Ghomashchi, Valerie M. Linton
Investigation Of Hydrogen Assisted Cracking In Acicular Ferrite Using Site-Specific Micro-Fracture Tests, Walter L. Costin, Oliver Lavigne, Andrei Kotousov, Reza Ghomashchi, Valerie M. Linton
Faculty of Engineering and Information Sciences - Papers: Part A
Hydrogen assisted cracking (HAC) is a common type of failure mechanism that can affect a wide range of metals and alloys. Experimental studies of HAC are cumbersome due to various intrinsic and extrinsic parameters and factors (associated with stress, hydrogen and the materials microstructure) contributing to the hydrogen crack kinetics. The microstructure of many materials consists of diverse constituents with characteristic features and mechanical properties which only occur in very small material volumes. The only way to differentiate the effect of these individual constituents on the hydrogen crack kinetics is to miniaturise the testing procedures. In this paper we present …
Effective Utilization Of Available Pev Battery Capacity For Mitigation Of Solar Pv Impact And Grid Support With Integrated V2g Functionality, Md Jan E Alam, Kashem M. Muttaqi, Danny Sutanto
Effective Utilization Of Available Pev Battery Capacity For Mitigation Of Solar Pv Impact And Grid Support With Integrated V2g Functionality, Md Jan E Alam, Kashem M. Muttaqi, Danny Sutanto
Faculty of Engineering and Information Sciences - Papers: Part A
Utilizing battery storage devices in plug-in electric vehicles (PEVs) for grid support using vehicle-to-grid (V2G) concept is gaining popularity. With appropriate control strategies, the PEV batteries and associated power electronics can be exploited for solar photovoltaic (PV) impact mitigation and grid support. However, as the PEV batteries have limited capacity and the capacity usage is also constrained by transportation requirements, an intelligent strategy is necessary for an effective utilization of the available capacity for V2G applications. In this paper, a strategy for an effective utilization of PEV battery capacity for solar PV impact mitigation and grid support is proposed. A …
A Laboratory Investigation To Assess The Functioning Of Railway Ballast With And Without Geogrids, Syed Khaja Karimullah Hussaini, Buddhima Indraratna, Jayan S. Vinod
A Laboratory Investigation To Assess The Functioning Of Railway Ballast With And Without Geogrids, Syed Khaja Karimullah Hussaini, Buddhima Indraratna, Jayan S. Vinod
Faculty of Engineering and Information Sciences - Papers: Part A
Understanding the complex load transfer mechanism and the subsequent accumulation of deformation in ballast and subballast layers under repeated wheel loading is essential to design resilient rail tracks. Large-scale cyclic tests have been conducted on railroad ballast instrumented with optical based fibre Bragg grating (FBG) sensors, LVDTs, pressure plates and the settlement pegs to explore the role of geogrid and its interaction with ballast in improving the track performance. Latite basalt and geogrids with different aperture sizes were used for the investigations. The laboratory experimental results indicate that the geogrid inclusions enhance track performance by arresting the lateral spreading of …
Behavior Of Hybrid Steel Fiber Reinforced High Strength Concrete, Emdad K. Z Balanji, M Neaz Sheikh, Muhammad N. S Hadi
Behavior Of Hybrid Steel Fiber Reinforced High Strength Concrete, Emdad K. Z Balanji, M Neaz Sheikh, Muhammad N. S Hadi
Faculty of Engineering and Information Sciences - Papers: Part A
High strength concrete has higher strength but lower ductility. Inclusion of single type of fibers into concrete has been proven to improve the behavior of concrete to a limited extent. However, recently it was found that the behavior of concrete can be improved more with the addition of hybrid fiber i.e., a combination of different types of fiber. This paper presents the results of an experimental investigation on the behavior of Hybrid Steel Fibre Reinforced High Strength Concrete (HSFR-HSC). A total of eight cylinder specimens with 150 mm in diameter and 300 mm in height were cast and tested under …
Online Patient Education For Chronic Disease Management: Consumer Perspectives, Khin Than Win, Naffisah Mohd Hassan, Harri Oinas-Kukkonen, Yasmine Probst
Online Patient Education For Chronic Disease Management: Consumer Perspectives, Khin Than Win, Naffisah Mohd Hassan, Harri Oinas-Kukkonen, Yasmine Probst
Faculty of Engineering and Information Sciences - Papers: Part A
Patient education plays an important role in chronic disease management. The aim of this study is to identify patients’ preferences in regard to the design features of effective online patient education (OPE) and the benefits. A review of the existing literature was conducted in order to identify the benefits of OPE and its essential design features. These design features were empirically tested by conducting survey with patients and caregivers. Reliability analysis, construct validity and regression analysis were performed for data analysis. The results identified patient-tailored information, interactivity, content credibility, clear presentation of content, use of multimedia and interpretability as the …
A Systematic Review Of Modelling Approaches In Economic Evaluations Of Health Interventions For Drug And Alcohol Problems, Van Phuong Hoang, Marian D. Shanahan, Nagesh Shukla, Pascal Perez, Michael Farrell, Alison Ritter
A Systematic Review Of Modelling Approaches In Economic Evaluations Of Health Interventions For Drug And Alcohol Problems, Van Phuong Hoang, Marian D. Shanahan, Nagesh Shukla, Pascal Perez, Michael Farrell, Alison Ritter
Faculty of Engineering and Information Sciences - Papers: Part A
Background: The overarching goal of health policies is to maximize health and societal benefits. Economic evaluations can play a vital role in assessing whether or not such benefits occur. This paper reviews the application of modelling techniques in economic evaluations of drug and alcohol interventions with regard to (i) modelling paradigms themselves; (ii) perspectives of costs and benefits and (iii) time frame. Methods: Papers that use modelling approaches for economic evaluations of drug and alcohol interventions were identified by carrying out searches of major databases. Results: Thirty eight papers met the inclusion criteria. Overall, the cohort Markov models remain the …
Characterisation Of A Cobalt-60 Small-Beam Animal Irradiator Using A Realtime Silicon Pixelated Detector, C Porumb, Jocelyn Davies, Vladimir Perevertaylo, Anatoly B. Rosenfeld, Marco Petasecca
Characterisation Of A Cobalt-60 Small-Beam Animal Irradiator Using A Realtime Silicon Pixelated Detector, C Porumb, Jocelyn Davies, Vladimir Perevertaylo, Anatoly B. Rosenfeld, Marco Petasecca
Faculty of Engineering and Information Sciences - Papers: Part A
The paper presents a study performed by the Centre for Medical Radiation Physics (CMRP) using a high spatial and temporal resolution silicon pixelated detector named MagicPlate- 512. The study focuses on the characterisation of three pencil beams from a low-dose rate, 6 TBq, cobalt-60 source, in terms of percentage depth dose, beam profiles, output factor and shutter timing. Where applicable, the findings were verified against radiochromic EBT3 film and ionization chambers. It was found that the results of the MagicPlate-512 and film agreed within 0.9 mm for penumbra and full-width at half-maximum measurements of the beam profiles, and within 0.75% …
Improving Speech Privacy In Personal Sound Zones, Jacob Donley, Christian H. Ritz, Bastiaan (Willem) Kleijn
Improving Speech Privacy In Personal Sound Zones, Jacob Donley, Christian H. Ritz, Bastiaan (Willem) Kleijn
Faculty of Engineering and Information Sciences - Papers: Part A
This paper proposes two methods for providing speech privacy between spatial zones in anechoic and reverberant environments. The methods are based on masking the content leaked between regions. The masking is optimised to maximise the speech intelligibility contrast (SIC) between the zones. The first method uses a uniform masker signal that is combined with desired multizone loudspeaker signals and requires acoustic contrast between zones. The second method computes a space-time domain masker signal in parallel with the loudspeaker signals so that the combination of the two emphasises the spectral masking in the targeted quiet zone. Simulations show that it is …
Learning Structured Dictionary Based On Inter-Class Similarity And Representative Margins, Yuyao Zhang, Philip O. Ogunbona, Wanqing Li, Gordon G. Wallace
Learning Structured Dictionary Based On Inter-Class Similarity And Representative Margins, Yuyao Zhang, Philip O. Ogunbona, Wanqing Li, Gordon G. Wallace
Faculty of Engineering and Information Sciences - Papers: Part A
We consider the problem of learning a structured and discriminative dictionary based on sparse representation for classification task. The structure comprises class-shared and class-specific partitions which allows the separation of common and class-specific information in the data for classification. The resulting optimization problem was a max margin formulation that exploits the hinge loss function property. Comparative evaluation of the proposed classifier against four recent alternatives in a gender classification task indicates a 3-percenatge point improvement.
3d Face Recognition Using Anthropometric And Curvelet Features Fusion, Dan Song, Jing Luo, Chunyuan Zi, Huixin Tian
3d Face Recognition Using Anthropometric And Curvelet Features Fusion, Dan Song, Jing Luo, Chunyuan Zi, Huixin Tian
Faculty of Engineering and Information Sciences - Papers: Part A
Curvelet transform can describe the signal by multiple scales, and multiple directions. In order to improve the performance of 3D face recognition algorithm, we proposed an Anthropometric and Curvelet features fusion-based algorithm for 3D face recognition (Anthropometric Curvelet Fusion Face Recognition, ACFFR). First, the eyes, nose, and mouth feature regions are extracted by the Anthropometric characteristics and curvature features of the human face. Second, Curvelet energy features of the facial feature regions at different scales and different directions are extracted by Curvelet transform. At last, Euclidean distance is used as the similarity between template and objectives. To verify the performance, …
Af-Embeddability Of 2-Graph Algebras And Quasidiagonality Of K-Graph Algebras, Lisa Orloff Clark, Astrid An Huef, Aidan Sims
Af-Embeddability Of 2-Graph Algebras And Quasidiagonality Of K-Graph Algebras, Lisa Orloff Clark, Astrid An Huef, Aidan Sims
Faculty of Engineering and Information Sciences - Papers: Part A
We characterise quasidiagonality of the C*-algebra of a cofinal k-graph in terms of an algebraic condition involving the coordinate matrices of the graph. This result covers all simple k-graph C*-algebras. In the special case of cofinal 2-graphs we further prove that AF-embeddability, quasidiagonality and stable finiteness of the 2-graph algebra are all equivalent.
Cyclic Lateral Response Of Frp-Confined Circular Concrete-Filled Steel Tubular Columns, Tao Yu, Y M. Hu, Jin Guang Teng
Cyclic Lateral Response Of Frp-Confined Circular Concrete-Filled Steel Tubular Columns, Tao Yu, Y M. Hu, Jin Guang Teng
Faculty of Engineering and Information Sciences - Papers: Part A
Concrete-filled steel tubular (CFT) columns are widely used as columns in many structural systems and a common failure mode of such tubular columns is inelastic outward local buckling near a column end. The use of fibre-reinforced polymer (FRP) jackets/wraps for the suppression of such local buckling has recently been proposed and has been proven to possess excellent potential in both retrofit/strengthening and new construction. This paper presents the results of an experimental study into the behaviour of large-scale FRP-confined CFT (CCFT) columns under combined axial compression and lateral loading. The test parameters included the stiffness of the FRP jacket and …
Recovery Of Absolute Phases For The Fringe Patterns Of Three Selected Wavelengths With Improved Anti-Error Capability, Jiale Long, Jiangtao Xi, Jianmin Zhang, Ming Zhu, Wengqing Cheng, Zhongwei Li, Yusheng Shi
Recovery Of Absolute Phases For The Fringe Patterns Of Three Selected Wavelengths With Improved Anti-Error Capability, Jiale Long, Jiangtao Xi, Jianmin Zhang, Ming Zhu, Wengqing Cheng, Zhongwei Li, Yusheng Shi
Faculty of Engineering and Information Sciences - Papers: Part A
In a recent published work, we proposed a technique to recover the absolute phase maps of fringe patterns with two selected fringe wavelengths. To achieve higher anti-error capability, the proposed method requires employing the fringe patterns with longer wavelengths; however, longer wavelength may lead to the degradation of the signal-to-noise ratio (SNR) in the surface measurement. In this paper, we propose a new approach to unwrap the phase maps from their wrapped versions based on the use of fringes with three different wavelengths which is characterized by improved anti-error capability and SNR. Therefore, while the previous method works on the …
Etching Process Related Changes And Effects On Solid-Core Single-Mode Polymer Optical Fiber Grating, Kishore Bhowmik, Gang-Ding Peng, Yanhua Luo, Eliathamby Ambikairajah, Vedran Lovric, William R. Walsh, Ginu Rajan
Etching Process Related Changes And Effects On Solid-Core Single-Mode Polymer Optical Fiber Grating, Kishore Bhowmik, Gang-Ding Peng, Yanhua Luo, Eliathamby Ambikairajah, Vedran Lovric, William R. Walsh, Ginu Rajan
Faculty of Engineering and Information Sciences - Papers: Part A
Etching process related material and mechanical changes on solid-core single-mode polymer optical fiber (POF) and their influence on the characteristic properties of polymer fiber Bragg gratings (PFBGs) are studied. A poly(methyl methacrylate)-based POF is etched to different diameters, and it is experimentally demonstrated that etching can lead to a change in the Young's modulus of the fiber. It is found that etching process induced material changes of the polymer fiber can enhance the reflectivity and inherent sensitivity of PFBGs. It is demonstrated that gratings based on etched POF exhibit higher reflectivity with a shorter exposure time compared with unetched ones. …
The Polyharmonic Heat Flow Of Closed Plane Curves, Scott Parkins, Glen Wheeler
The Polyharmonic Heat Flow Of Closed Plane Curves, Scott Parkins, Glen Wheeler
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper we consider the polyharmonic heat flow of a closed curve in the plane. Our main result is that closed initial data with initially small normalised oscillation of curvature and isoperimetric defect flows exponentially fast in the C∞C∞-topology to a simple circle. Our results yield a characterisation of the total amount of time during which the flow is not strictly convex, quantifying in a sense the failure of the maximum principle.
Critical Assessment 20: On Carbon Excess In Bainitic Ferrite, Elena V. Pereloma
Critical Assessment 20: On Carbon Excess In Bainitic Ferrite, Elena V. Pereloma
Faculty of Engineering and Information Sciences - Papers: Part A
For several decades, the question of carbon supersaturation in bainitic ferrite has attracted the attention of physical metallurgists. Originally, this was associated with excess carbon due to the displacive nature ofphase transformation and its subsequent trappingatdefects inbainitic ferrite. The development of advanced experimental techniques, such as atom probe tomography and in situ synchrotron and neutron X-ray diffraction, has provided new insights into carbon distribution within bainitic ferrite. Possible explanations for carbon excess in solid solution are discussed, and the pathways for the future advancement of this research question are suggested.
Coupled Grain Boundary Motion In Aluminium: The Effect Of Structural Multiplicity, Kuiyu Cheng, Liang Zhang, Cheng Lu, Anh Kiet Tieu
Coupled Grain Boundary Motion In Aluminium: The Effect Of Structural Multiplicity, Kuiyu Cheng, Liang Zhang, Cheng Lu, Anh Kiet Tieu
Faculty of Engineering and Information Sciences - Papers: Part A
The shear-induced coupled grain boundary motion plays an important role in the deformation of nanocrystalline (NC) materials. It has been known that the atomic structure of the grain boundary (GB) is not necessarily unique for a given set of misorientation and inclination of the boundary plane. However, the effect of the structural multiplicity of the GB on its coupled motion has not been reported. In the present study we investigated the structural multiplicity of the symmetric tilt Σ 5(310) boundary in aluminium and its influence on the GB behaviour at a temperature range of 300 K-600 K using molecular dynamic …
Chemical Nature Of Alkaline Polyphosphate Boundary Film At Heated Rubbing Surfaces, Shanhong Wan, Anh Kiet Tieu, Qiang Zhu, Hongtao Zhu, Shaogang Cui, David R. G Mitchell, Charlie Kong, Bruce Cowie, John A. Denman, Rong Liu
Chemical Nature Of Alkaline Polyphosphate Boundary Film At Heated Rubbing Surfaces, Shanhong Wan, Anh Kiet Tieu, Qiang Zhu, Hongtao Zhu, Shaogang Cui, David R. G Mitchell, Charlie Kong, Bruce Cowie, John A. Denman, Rong Liu
Faculty of Engineering and Information Sciences - Papers: Part A
Alkaline polyphosphate has been demonstrated to be able to reduce significant wear and friction of sliding interfaces under heavy loads (>1 GPa) and elevated temperature (800°C and above) conditions, e.g. hot metal manufacturing. The chemical composition and fine structure of polyphosphate lubricating film is not well understood as well as the role of alkaline elements within the reaction film at hot rubbing surface. This work makes use of the coupling surface analytical techniques on the alkaline polyphosphate tribofilm, XANES, TOF-SIMS and FIB/TEM. The data show the composition in gradient distribution and trilaminar structure of tribofilm: a shorter chain phosphate …
Energy Analysis Of Net Zero Energy Buildings: A Case Study, Joel Anderson, Duane A. Robinson, Zhenjun Ma
Energy Analysis Of Net Zero Energy Buildings: A Case Study, Joel Anderson, Duane A. Robinson, Zhenjun Ma
Faculty of Engineering and Information Sciences - Papers: Part A
The building sector is a significant contributor to global energy usage and environmental emissions. Advanced building design, optimal selection and sizing of building components, and energy efficient operation are among the key ways of significantly reducing overall building energy demand. Achieving reduction in energy demand is a key directive of the net zero energy building concept. Building designs dedicated to meeting net zero energy building requirements are becoming more commonplace as a path towards reducing the overall emissions from the built environment. This work analyses the energy demand of a net zero energy office building and compares it with a …
Arc Erosion Behavior Of La-Doping Titanium-Zirconium-Molybdenum Alloy, Ping Hu, Bo-Liang Hu, Kuai-She Wang, Fan Yang, Rui Song, Zhi-Tao Yu, Qiang Wang, Wei-Cheng Cao, Dong-Xin Liu, Geng An, Lei Guo, Hai Liang Yu
Arc Erosion Behavior Of La-Doping Titanium-Zirconium-Molybdenum Alloy, Ping Hu, Bo-Liang Hu, Kuai-She Wang, Fan Yang, Rui Song, Zhi-Tao Yu, Qiang Wang, Wei-Cheng Cao, Dong-Xin Liu, Geng An, Lei Guo, Hai Liang Yu
Faculty of Engineering and Information Sciences - Papers: Part A
La-doping titanium-zirconium-molybdenum alloys have good arc erosion resistance performances, but there is no research about the changes during the arc erosion. Arc erosion characteristics of La-doping titanium-zirconium-molybdenum alloys after 5000 operations under direct current 20 V, 15 A and resistive load conditions were investigated using a JF04C test system. The results indicated that the probability distribution and change trend of arc energy and arc time during 5000 operations were similar and the relationship between arc time and arc energy followed exponential function. The change of arc energy with test number was consistent to electrical resistance. Oxide particles, crater and cracks …
Thermal Performance Evaluation And Optimal Design Of Buildings With Integrated Air-Based Photovoltaic Thermal Collectors And Phase Change Materials Using The Hooke-Jeeves Pattern Search Method, Wenye Lin, Zhenjun Ma, Paul Cooper
Thermal Performance Evaluation And Optimal Design Of Buildings With Integrated Air-Based Photovoltaic Thermal Collectors And Phase Change Materials Using The Hooke-Jeeves Pattern Search Method, Wenye Lin, Zhenjun Ma, Paul Cooper
Faculty of Engineering and Information Sciences - Papers: Part A
Over the last several decades, many low energy technologies have been developed and deployed to reduce building energy consumption. Among various solutions, solar photovoltaic thermal (PVT) collectors and phase change materials (PCMs) are among the most promising methods receiving increasing attention. This paper presents a thermal performance evaluation and optimal design of buildings integrated with air-based solar PVT collectors and PCMs embedded in the building envelope by using The Hooke-Jeeves pattern search method. The Hooke-Jeeves generalized pattern search is used to search for optimal solutions of the optimization problem. The variables optimized include the PVT air flow rate, additional wall …
Breakaway Oxidation Behaviour Of Ferritic Stainless Steels At 1150 °C In Humid Air, Xiawei Cheng, Zhengyi Jiang, Brian J. Monaghan, Dongbin Wei, Raymond Longbottom, Jingwei Zhao, Jianguo Peng, Ming Luo, Li Ma, Suzhen Luo, Laizhu Jiang
Breakaway Oxidation Behaviour Of Ferritic Stainless Steels At 1150 °C In Humid Air, Xiawei Cheng, Zhengyi Jiang, Brian J. Monaghan, Dongbin Wei, Raymond Longbottom, Jingwei Zhao, Jianguo Peng, Ming Luo, Li Ma, Suzhen Luo, Laizhu Jiang
Faculty of Engineering and Information Sciences - Papers: Part A
The breakaway oxidation behaviour of ferritic stainless steels 430, 443 and 445 has been investigatedat 1150◦C in humid air. The oxidation kinetics exhibited significant differences among the three ferriticstainless steels. A uniform and steady growing oxide scale was developed on the 430 steel with an evensteel/oxide interface. Local breakdown of the initially protective oxide scale occurred and oxide noduleswere developed on the 443 and 445 stainless steels, resulting in irregular and rough steel/oxide inter-faces. The breakaway oxidation behaviour was significantly influenced by the microstructure and thecomposition of the oxide scale. The Mn-Cr spinel oxide formed on top of the Cr2O3scale …
A New Attack On Three Variants Of The Rsa Cryptosystem, Martin W. Bunder, Abderrahmane Nitaj, Willy Susilo, Joseph Tonien
A New Attack On Three Variants Of The Rsa Cryptosystem, Martin W. Bunder, Abderrahmane Nitaj, Willy Susilo, Joseph Tonien
Faculty of Engineering and Information Sciences - Papers: Part A
In 1995, Kuwakado, Koyama and Tsuruoka presented a new RSA-type scheme based on singular cubic curves y2 ≡ x3+bx2 (mod N) where N = pq is an RSA modulus. Then, in 2002, Elkamchouchi, Elshenawy and Shaban introduced an extension of the RSA scheme to the field of Gaussian integers using a modulus N = PQ where P and Q are Gaussian primes such that p = |P| and q = |Q| are ordinary primes. Later, in 2007, Castagnos proposed a scheme over quadratic field quotients with an RSA modulus N = pq. In …
Relations Between Robustness And Rka Security Under Public-Key Encryption, Hui Cui, Yi Mu, Man Ho Au
Relations Between Robustness And Rka Security Under Public-Key Encryption, Hui Cui, Yi Mu, Man Ho Au
Faculty of Engineering and Information Sciences - Papers: Part A
We revisit the notions of robustness introduced by Abdalla, Bellare and Neven (TCC 2010), and related-key attack (RKA) security raised by Bellare, Cash and Miller (ASIACRYPT 2011). In the setting of public-key encryption (PKE), robustness means that it is hard to produce a ciphertext that is valid for two different users, while RKA security means that a PKE scheme is still secure even when an attacker can induce modifications in a decryption key, and subsequently observe the outcome of this PKE scheme under this modified key. In this paper, we explore the relationship between RKA security and various notions of …
An Analytical Solution For Parisian Up-And-In Calls, Nhat Tan Le, Xiaoping Lu, Song-Ping Zhu
An Analytical Solution For Parisian Up-And-In Calls, Nhat Tan Le, Xiaoping Lu, Song-Ping Zhu
Faculty of Engineering and Information Sciences - Papers: Part A
We derive an analytical solution for the value of Parisian up-and-in calls by using the "moving window" technique for pricing European-style Parisian up-and-out calls. Our pricing formula can be applied to both European-style and American-style Parisian up-and-in calls, due to the fact that with an "in" barrier, the option holder cannot do or decide on anything before the option is activated, and once the option is activated it is just a plain vanilla call, which could be of American style or European style.
Genomic Selection In Multi-Environment Crop Trials, Helena Oakey, Brian R. Cullis, Robin Thompson, Jordi Comadran, Claire Halpin, Robbie Waugh
Genomic Selection In Multi-Environment Crop Trials, Helena Oakey, Brian R. Cullis, Robin Thompson, Jordi Comadran, Claire Halpin, Robbie Waugh
Faculty of Engineering and Information Sciences - Papers: Part A
Genomic selection in crop breeding introduces modeling challenges not found in animal studies. These include the need to accommodate replicate plants for each line, consider spatial variation in field trials, address line by environment interactions, and capture nonadditive effects. Here, we propose a flexible single-stage genomic selection approach that resolves these issues. Our linear mixed model incorporates spatial variation through environment-specific terms, and also randomization-based design terms. It considers marker, and marker by environment interactions using ridge regression best linear unbiased prediction to extend genomic selection to multiple environments. Since the approach uses the raw data from line replicates, the …
Predictive Inference For Big, Spatial, Non-Gaussian Data: Modis Cloud Data And Its Change-Of-Support, Aritra Sengupta, Noel A. Cressie, Brian H. Kahn, Richard Frey
Predictive Inference For Big, Spatial, Non-Gaussian Data: Modis Cloud Data And Its Change-Of-Support, Aritra Sengupta, Noel A. Cressie, Brian H. Kahn, Richard Frey
Faculty of Engineering and Information Sciences - Papers: Part A
Remote sensing of the earth with satellites yields datasets that can be massive in size, nonstationary in space, and non-Gaussian in distribution. To overcome computational challenges, we use the reduced-rank spatial random effects (SRE) model in a statistical analysis of cloud-mask data from NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on board NASA's Terra satellite. Parameterisations of cloud processes are the biggest source of uncertainty and sensitivity in different climate models' future projections of Earth's climate. An accurate quantification of the spatial distribution of clouds, as well as a rigorously estimated pixel-scale clear-sky-probability process, is needed to establish reliable estimates …
Axial Load-Axial Deformation Behaviour Of Circular Concrete Columns Reinforced With Gfrp Bars And Helices, Hogr Karim, M Neaz Sheikh, Muhammad N. S Hadi
Axial Load-Axial Deformation Behaviour Of Circular Concrete Columns Reinforced With Gfrp Bars And Helices, Hogr Karim, M Neaz Sheikh, Muhammad N. S Hadi
Faculty of Engineering and Information Sciences - Papers: Part A
Fibre Reinforced Polymer (FRP) bars has attracted a significant amount of research attention in the last three decades to overcome the problems associated with the corrosion of steel reinforcing bars in reinforced concrete members. A limited number of studies, however, have investigated the behaviour of concrete columns reinforced with FRP bars. Also, available design standards either ignore the contribution of or do not recommend the use of GFRP bars in compression members. This study reports the results of experimental investigations of concrete specimens reinforced with GFRP bars and GFRP helices as longitudinal and transverse reinforcement, respectively. A total of five …