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University of Wollongong

2019

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Articles 661 - 671 of 671

Full-Text Articles in Social and Behavioral Sciences

Numerically Pricing Convertible Bonds Under Stochastic Volatility Or Stochastic Interest Rate With An Adi-Based Predictor-Corrector Scheme, Sha Lin, Song-Ping Zhu Jan 2019

Numerically Pricing Convertible Bonds Under Stochastic Volatility Or Stochastic Interest Rate With An Adi-Based Predictor-Corrector Scheme, Sha Lin, Song-Ping Zhu

Faculty of Engineering and Information Sciences - Papers: Part B

2019 Elsevier Ltd In this paper, the pricing problem for the American-style convertible bonds with the Heston stochastic volatility and that with the Cox-Ingersoll-Ross (CIR) stochastic interest rate are both considered. Due to the complexity of both problems, resulting from an additional stochastic factor, it is almost impossible to find any analytical solution. Therefore, a predictor-corrector scheme is chosen as the numerical scheme to solve the partial differential equations (PDEs), with the Douglas-Rachford (D-R) method being utilized as one of the Alternating Direction Implicit (ADI) methods for the correction step to obtain the numerical solution. Finally, the accuracy of our …

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Untwisting Twisted Spectral Triples, Magnus Goffeng, Bram Mesland, Adam C. Rennie Jan 2019

Untwisting Twisted Spectral Triples, Magnus Goffeng, Bram Mesland, Adam C. Rennie

Faculty of Engineering and Information Sciences - Papers: Part B

2019 World Scientific Publishing Company. We examine the index data associated to twisted spectral triples and higher order spectral triples. In particular, we show that a Lipschitz regular twisted spectral triple can always be "logarithmically dampened" through functional calculus, to obtain an ordinary (i.e. untwisted) spectral triple. The same procedure turns higher order spectral triples into spectral triples. We provide examples of highly regular twisted spectral triples with nontrivial index data for which Moscovici's ansatz for a twisted local index formula is identically zero.

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A Lightweight Privacy-Preserving Fair Meeting Location Determination Scheme, Hua Shen, Mingwu Zhang, Hao Wang, Fuchun Guo, Willy Susilo Jan 2019

A Lightweight Privacy-Preserving Fair Meeting Location Determination Scheme, Hua Shen, Mingwu Zhang, Hao Wang, Fuchun Guo, Willy Susilo

Faculty of Engineering and Information Sciences - Papers: Part B

Equipped with mobile devices, people relied on location-based services can expediently and reasonably organize their activities. But location information may disclose people's sensitive information, such as interests, health status. Besides, the limited resources of mobile devices restrict the further development of location-based services. In this paper, aiming at the fair meeting position determination service, we design a lightweight privacy-preserving solution. In our scheme, mobile users only need to submit service requests. A cloud server and a location services provider are responsible for service response, where the cloud server achieves most of the calculation, and the location services provider determines the …

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Facilitating Application-Aware Bandwidth Allocation In The Cloud With One-Step-Ahead Traffic Information, Dian Shen, Junzhou Luo, Fang Dong, Jiahui Jin, Junxue Zhang, Jun Shen Jan 2019

Facilitating Application-Aware Bandwidth Allocation In The Cloud With One-Step-Ahead Traffic Information, Dian Shen, Junzhou Luo, Fang Dong, Jiahui Jin, Junxue Zhang, Jun Shen

Faculty of Engineering and Information Sciences - Papers: Part B

Bandwidth allocation to virtual machines (VMs) has a significant impact on the performance of communication-intensive big data applications hosted in VMs. It is crucial to accurately determine how much bandwidth to be reserved for VMs and when to adjust it. Past approaches typically resort to predicting the long-term network demands of applications for bandwidth allocation. However, lacking of prediction accuracy, these methods lead to the unpredictable application performance. Recently, it is conceded that the network demands of applications can only be accurately derived right before each of their execution phases. Hence, it is challenging to timely allocate the bandwidth to …

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Effect Of Particle Size On Microstructure And Element Diffusion At The Interface Of Tungsten Carbide/High Strength Steel Composites, Hongmei Zhang, Hongnan Li, Ling Yan, Chao Wang, Fangfang Ai, Yan Li, Nan Li, Zhengyi Jiang Jan 2019

Effect Of Particle Size On Microstructure And Element Diffusion At The Interface Of Tungsten Carbide/High Strength Steel Composites, Hongmei Zhang, Hongnan Li, Ling Yan, Chao Wang, Fangfang Ai, Yan Li, Nan Li, Zhengyi Jiang

Faculty of Engineering and Information Sciences - Papers: Part B

The microstructure and micro-hardness of tungsten carbide/high strength steel (WC/HSS) composites with different particle sizes were analyzed by optical microscopy (OM), scanning electron microscopy (SEM), ultra-high temperature laser confocal microscopy (UTLCM) and micro-hardness testing. The composites were prepared by cold pressing and vacuum sintering. The results show that WC density tends to increase as the average grain size of WC decreases and the micro-hardness of WC increases with the decrease of WC particle size. The micro-hardness of WC near the bonding interface is higher than that in other regions. When the particle size of WC powder particles is 200 nm, …

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Formula For Sediment Transport Subject To Vertical Flows, Shu-Qing Yang Jan 2019

Formula For Sediment Transport Subject To Vertical Flows, Shu-Qing Yang

Faculty of Engineering and Information Sciences - Papers: Part B

Sediment transport is a geophysical phenomenon in which sediment particles are driven to move in streamwise and vertical directions by various forces. Almost all existing formulas of sediment transport were derived without considering vertical flows V, resulting in a large discrepancy between measured and predicted transport rates, as has been reported in the literature. This paper investigates the effect of vertical motion on sediment transport. It was found that upward fluid velocity increases particles' mobility, and downward motion increases particles stability. Furthermore, the investigation showed that decelerating flows can promote upward flow and vice versa. New equations were developed to …

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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 Jan 2019

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 ≤ …

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First Dog, Last Dog: New Intertextual Short Fictions About Canis Lupus Familiaris, A. Frances Johnson Jan 2019

First Dog, Last Dog: New Intertextual Short Fictions About Canis Lupus Familiaris, A. Frances Johnson

Animal Studies Journal

The double short story sequence ‘First Dog, Last Dog’ explores interdependencies between domesticated animals and humans. The first story, ‘The Death of the First Dog’, re-reads and quotes from Homer’s The Odyssey and the encounter between Odysseus and his aged hunting dog Argos. Its companion piece, ‘The Carrying’, is set in a speculative future. Exploiting qualities of the Borghesian fable, both tales are interspecies tales of love and loss. This work was read at the 2018 Melbourne Writers Festival ‘Animal Church’ event curated by Dr Laura McKay.

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Life And Death With Horses: Gillian Mears’ Novel Foal’S Bread, Deborah Wardle Jan 2019

Life And Death With Horses: Gillian Mears’ Novel Foal’S Bread, Deborah Wardle

Animal Studies Journal

Gillian Mears’ novel Foal’s Bread (2011) invites an examination of horses in fiction, opening a platform for exploring the horse in Australian literature from a zoocritical perspective. This paper argues that writing horses into stories involves addressing, indeed flouting the ‘sin’ of anthropomorphism. The problems and paradoxes of ascribing subjectivity to fictional equine characters are discussed. The death of the main equine character, Magpie, is framed as a site of disregard, an example of human disconnection from the lives and deaths of animals. Using excerpts from the award-wining novel, Foal’s Bread, as well as examples from other equine literature, the …

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[Review] Lesley A. Sharp, Animal Ethos: The Morality Of Human-Animal Encounters In Experimental Lab Science. University Of California Press, 2018. 312pp, Denise Russell Jan 2019

[Review] Lesley A. Sharp, Animal Ethos: The Morality Of Human-Animal Encounters In Experimental Lab Science. University Of California Press, 2018. 312pp, Denise Russell

Animal Studies Journal

Animal Ethos. What is that? This heading on its own is a puzzle. Taken together with the subheading and reading the book it seems that ‘Animal Ethos’ means the customary way of interacting with animals in lab settings. The sub-heading led me to believe that the book would be not just about the ethos in the sense just described but about what is right and what is wrong in the human-animal encounters in animal experiments. Lesley Sharp coming from the discipline of anthropology shies away from making such judgements with some very rare exceptions, for example, when describing the abhorrent …

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How Shall We Live Together? A Response To Paola Cavalieri, Sue Donaldson Jan 2019

How Shall We Live Together? A Response To Paola Cavalieri, Sue Donaldson

Animal Studies Journal

Paola Cavalieri asks whether the animal rights/liberation (AR/L) movement should be ‘selfsufficient and self-reliant’,2 and develop ‘an autonomous presence both in the political arena and in the electoral process’3 rather than focusing on alliance building with the broader Left. Cavalieri’s hesitation about alliance-building is motivated by worries about diffusion and loss of focus, but also by the thought that ‘humanism leads the worse-off to cling to their humanity to the detriment of animals’. Thus, acting ‘as a full member of the family of social justice struggles’ will lead either to wasting energy on alliances that never materialize, or to watering …

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