Digital Commons Network^™

Leveraging Elasticity To Uncover The Role Of Rabinowitsch Suspension Through A Wavelike Conduit: Consolidated Blood Suspension Application, Sara I. Abdelsalam, A. Z. Zaher

Basic Science Engineering

The present work presents a mathematical investigation of a Rabinowitsch suspension fluid through elastic walls with heat transfer under the effect of electroosmotic forces (EOFs). The governing equations contain empirical stress-strain equations of the Rabinowitsch fluid model and equations of fluid motion along with heat transfer. It is of interest in this work to study the effects of EOFs, which are rigid spherical particles that are suspended in the Rabinowitsch fluid, the Grashof parameter, heat source, and elasticity on the shear stress of the Rabinowitsch fluid model and flow quantities. The solutions are achieved by taking long wavelength approximation with …

Design Out Waste Framework For Achieving Sustainability In Public Housing Projects In Egypt, Ayman Ahmed Ezzat Othman, Laila Elsawaf

Architectural Engineering

Due to the increasing population worldwide, Public housing projects (PHPs) have witnessed a rapid increase during the previous decades. Simultaneously, this generated a substantial amount of waste that represents roughly 40% of the solid waste produced by the construction industry every year. Being one of the significant phases of the construction process, the choices made during the design process play a crucial role towards increasing the solid waste created during the construction phase, which eventually affected the sustainability of the developed projects. This called for considering innovative strategies that reduce construction waste during the design process. This paper aims to …

Software Engineering In Australasia, Sherlock A. Licorish, Christoph Treude, John Grundy, Kelly Blincoe, Stephen Macdonell, Chakkrit Tantithamthavorn, Li Li, Jean-Guy Schneider

Research Collection School Of Computing and Information Systems

Six months ago an important call was made for researchers globally to provide insights into the way Software Engineering is done in their region. Heeding this call, we hereby outline the position Software Engineering in Australasia (New Zealand and Australia). This article first considers the software development methods, practices and tools that are popular in the Australasian software engineering community. We then briefly review the particular strengths of software engineering researchers in Australasia. Finally, we make an open call for collaborators by reflecting on our current position and identifying future opportunities.

Facial Emotion Recognition With Noisy Multi-Task Annotations, S. Zhang, Zhiwu Huang, D.P. Paudel, Gool L. Van

Research Collection School Of Computing and Information Systems

Human emotions can be inferred from facial expressions. However, the annotations of facial expressions are often highly noisy in common emotion coding models, including categorical and dimensional ones. To reduce human labelling effort on multi-task labels, we introduce a new problem of facial emotion recognition with noisy multitask annotations. For this new problem, we suggest a formulation from the point of joint distribution match view, which aims at learning more reliable correlations among raw facial images and multi-task labels, resulting in the reduction of noise influence. In our formulation, we exploit a new method to enable the emotion prediction and …

Proxy-Free Privacy-Preserving Task Matching With Efficient Revocation In Crowdsourcing, Jiangang Shu, Kan Yang, Xiaohua Jia, Ximeng Liu, Cong Wang, Robert H. Deng

Research Collection School Of Computing and Information Systems

Task matching in crowdsourcing has been extensively explored with the increasing popularity of crowdsourcing. However, privacy of tasks and workers is usually ignored in most of exiting solutions. In this paper, we study the problem of privacy-preserving task matching for crowdsourcing with multiple requesters and multiple workers. Instead of utilizing proxy re-encryption, we propose a proxy-free task matching scheme for multi-requester/multi-worker crowdsourcing, which achieves task-worker matching over encrypted data with scalability and non-interaction. We further design two different mechanisms for worker revocation including ServerLocal Revocation (SLR) and Global Revocation (GR), which realize efficient worker revocation with minimal overhead on the …

An Efficient Privacy Preserving Message Authentication Scheme For Internet-Of-Things, Jiannan Wei, Tran Viet Xuan Phuong, Guomin Yang

Research Collection School Of Computing and Information Systems

As an essential element of the next generation Internet, Internet of Things (IoT) has been undergoing an extensive development in recent years. In addition to the enhancement of peoples daily lives, IoT devices also generate/gather a massive amount of data that could be utilized by machine learning and big data analytics for different applications. Due to the machine-to-machine communication nature of IoT, data security and privacy are crucial issues that must be addressed to prevent different cyber attacks (e.g., impersonation and data pollution/poisoning attacks). Nevertheless, due to the constrained computation power and the diversity of IoT devices, it is a …

Discovering Hidden Topical Hubs And Authorities Across Multiple Online Social Networks, Ka Wei, Roy Lee, Tuan-Anh Hoang, Ee-Peng Lim

Research Collection School Of Computing and Information Systems

Finding influential users in online social networks (OSNs) is an important problem with many possible useful applications. Many methods have been proposed to identify influential users in OSNs. PageRank and HITs are two well known examples that determine influential users through link analysis. In recent years, new models that consider both content and social network links have been developed. The Hub and Authority Topic (HAT) model is one that extends HITS to identify topic-specific hubs and authorities by jointly learning hubs, authorities, and topical interests from users’ relationship and textual content. However, many of the previous works are confined to …

Rapid Transition Of A Technical Course From Face-To-Face To Online, Swapna Gottipatti, Venky Shankaraman

Research Collection School Of Computing and Information Systems

Just like most universities around the world, the senior management at Singapore Management University decided to move all courses to a virtual, online, synchronous mode, giving instructors a very short notice period—one week—to make this transition. In this paper, we describe the challenges, practical solutions adopted, and the lessons learnt in rapidly transitioning a face-to-face Master’s degree course in Text Analytics and Applications into a virtual, online, course format that could deliver a quality learning experience.

A Review Of Bast Fibres And Their Composites: Part 4 ~ Organisms And Enzyme Processes, John Summerscales

School of Engineering, Computing and Mathematics

No abstract provided.

A Numerical Investigation Of The Sealing Performance And The Strength Of A Raised Face Metallic Bolted Flange Joint, Muhsin Aljuboury, Md Jahir Rizvi, Stephen Grove, Richard Cullen

School of Engineering, Computing and Mathematics

No abstract provided.

Coastal Dunes As A Sink And Secondary Source Of Marine Plastics: A Study At Perran Beach, Southwest England, Andrew Turner, Sara L. Amos, Tracey Williams

School of Geography, Earth and Environmental Sciences

No abstract provided.

Assessing Focused Wave Impacts On Floating Wave Energy Converters Using Openfoam, Scott Andrew Brown, Edward Jack Ransley, Deborah M. Greaves

School of Engineering, Computing and Mathematics

This study considers focused wave interactions with floating wave energy converters and represents an individual contribution to the CCP-WSI blind test series 2, in which the submitted results are compared against both physical and alternative numerical solutions for varying wave steepness achieved through changes in peak frequency. Reducing the time taken to provide reliable results is critical if computational fluid dynamics (CFD) is to become a routine design tool for offshore renewable energy devices. This can potentially be achieved by simplifying simulation set-up, and hence reduce the required man-hours, through standardised ‘best practice’ procedures. In order to achieve this, it …

A Novel Method Based On Long Short Term Memory Network And Discrete-Time Zeroing Neural Algorithm For Upper-Limb Continuous Estimation Using Semg Signals, Yuanyuan Chai, Keping Liu, Chunxu Li, Zhongbo Sun, Long Jin, Tian Shi

School of Engineering, Computing and Mathematics

In this paper, a novel closed-loop model based on surface electromyography (sEMG) comprised a long short term memory (LSTM) network and discrete-time zeroing neural algorithm called zeroing neural network (ZNN), which is developed to estimate joint angles and angular velocities of human upper limb with joint damping. The dynamic model of human upper limb with joint damping is set up as the initial equation. Then, the LSTM network is proposed as an open-loop model which described the input-output relationship between the sEMG signals and joint motion intention. Besides, a novel closed-loop model is built via ZNN for eliminating the predicted …

Solid Waste Management In Developing Countries: Reusing Of Steel Slag Aggregate In Eco-Friendly Interlocking Concrete Paving Blocks Production, Oluwarotimi Olofinnade, Ayoyinka Morawo, Oluwatomisin Okedairo, Boksun Kim

School of Engineering, Computing and Mathematics

The needs to meet the global demand for the conservation of non-renewable resources has necessitated the efforts of finding alternative materials. This current study investigates the beneficial utilization of the crushed waste furnace steel slag as a replacement for natural sand in concrete interlocking paving block units’ production for pedestrian and non-traffic applications. A total number of 144 paver samples were cast at replacement percentages of 0, 20, 40, 60, 80 and 100 % by weight of sand using a mix proportion ratio of 1:1.5:3 (cement: sand: granite) at a constant water-cement ratio of 0.5, targeting a strength of 20 …

Ergodic Sampling Of The Topological Charge Using The Density Of States, Guido Cossu, David Lancaster, Biagio Lucini, Roberto Pellegrini, Antonio Rago

School of Engineering, Computing and Mathematics

AbstractIn lattice calculations, the approach to the continuum limit is hindered by the severe freezing of the topological charge, which prevents ergodic sampling in configuration space. In order to significantly reduce the autocorrelation time of the topological charge, we develop a density of states approach with a smooth constraint and use it to study SU(3) pure Yang Mills gauge theory near the continuum limit. Our algorithm relies on simulated tempering across a range of couplings, which guarantees the decorrelation of the topological charge and ergodic sampling of topological sectors. Particular emphasis is placed on testing the accuracy, efficiency and scaling …

Prospects On The Nano-Plastic Particles Internalization And Induction Of Cellular Response In Human Keratinocytes, Pm Gopinath, Ks Twayana, P Ravanan, John Thomas, A Mukherjee, Df Jenkins, N Chandrasekaran

School of Engineering, Computing and Mathematics

Abstract Background Today, cosmetic products are very popular with both men and women to improve their appearance and increase their social acceptability. Results In this study, nano-sized (30–300 nm) plastic particles were isolated from the commercial face-scrubs and treated on the human keratinocytes. The observed adherence of polyethylene nano-plastics (PENPs), polystyrene NPs (PSNPs), and face-scrubs isolated nano-plastics (NPs) on the keratin layer reveals a significant attachment of NPs from the cosmetics that are applied on the skin for a short duration. This attachment property could facilitate further adherence of protein molecules on NPs and the protein-corona formation. The protein-corona mimics …

Global Syndromes Induced By Changes In Solutes Of The World’S Large Rivers, Jiang Wu, Nan Xu, Yichu Wang, Wei Zhang, Alistair G.L. Borthwick, Jinren Ni

School of Engineering, Computing and Mathematics

AbstractSolute-induced river syndromes have grown in intensity in recent years. Here we investigate seven such river syndromes (salinization, mineralization, desalinization, acidification, alkalization, hardening, and softening) associated with global trends in major solutes (Ca2+, Mg2+, Na+, K+, SO42−, Cl−, HCO3−) and dissolved silica in the world’s large rivers (basin areas ≥ 1000 km2). A comprehensive dataset from 600 gauge stations in 149 large rivers reveals nine binary patterns of co-varying trends in runoff and solute concentration. Solute-induced river syndromes are associated with remarkable increases in total dissolved solids (68%), chloride (81%), sodium (86%) and sulfate (142%) fluxes from rivers to oceans …

Energy And Throughput Efficient Strategies For Heterogeneous Future Communication Networks, Haitham El-Mohamdy Khaled

Theses: Doctorates and Masters

As a result of the proliferation of wireless-enabled user equipment and data-hungry applications, mobile data traffic has exponentially increased in recent years.This in-crease has not only forced mobile networks to compete on the scarce wireless spectrum but also to intensify their power consumption to serve an ever-increasing number of user devices. The Heterogeneous Network (HetNet) concept, where mixed types of low-power base stations coexist with large macro base stations, has emerged as a potential solution to address power consumption and spectrum scarcity challenges. However, as a consequence of their inflexible, constrained, and hardware-based configurations, HetNets have major limitations in adapting …

Exploring The Experiences Of Australian Science Researchers; Library, Google And Beyond, Ewa Maria Niewiadomska

Theses: Doctorates and Masters

Universities and research institutions in Australia are under pressure to produce high-quality research outputs. To generate the desired level of research, continuous provision of information is required. As a result of developments of digital technologies, the information behaviour of academics, both as consumers and creators of new information and knowledge, has evolved and changed over the decades.

In this study, the primary research question focused on how science academics based at Australian universities experience digital information sources as part of their scholarly activities. To support these research goals, the thesis explores where science academics seek information to support their research …

Down The Rabbit Hole: An Exhibition – And – Alice In Wonderland Engaging With The Reflexive Project Of The Self: An Exegesis, Shana James

Theses: Doctorates and Masters

Alice’s Adventures in Wonderland is a culturally significant text that is widely known across many cultures. In this Victorian story, a little girl follows the talking White Rabbit down a rabbit hole to uncover a fantastical parallel world. Alice in Wonderland has remained in print for over 150 years, highlighting its continued relevance to generations of readers. This exegesis investigates the making of visual artwork that responds to this significant story, exploring the symbology and metaphorical nature of the text and seeing the story as a “reflexive project of the self” (Giddens, 1991, p. 5).

I began this research having …

A Defensive Strategy For Detecting Targeted Adversarial Poisoning Attacks In Machine Learning Trained Malware Detection Models, Adrian Michael Wood

Theses: Doctorates and Masters

Machine learning is a subset of Artificial Intelligence which is utilised in a variety of different fields to increase productivity, reduce overheads, and simplify the work process through training machines to automatically perform a task. Machine learning has been implemented in many different fields such as medical science, information technology, finance, and cyber security. Machine learning algorithms build models which identify patterns within data, which when applied to new data, can map the input to an output with a high degree of accuracy. To build the machine learning model, a dataset comprised of appropriate examples is divided into training and …

Prospects And Challenges For Supply Chain Trade Under The Africa Continental Free Trade Area☆:, Jaime De Melo, Anna Twum

Journal of African Trade

No abstract provided.

The African Continental Free Trade Area: A Historical Moment For Development In Africa:, Vera Songwe, Jamie Alexander Macleod, Stephen Karingi

Journal of African Trade

No abstract provided.

Resilient Control In The Presence Of Man-In-The-Middle Attacks, Paul Griffioen, Raffaele Romagnoli, Bruce H. Krogh, Bruno Sinopoli

Faculty Work Comprehensive List

Cyber-physical systems, which are ubiquitous in modern critical infrastructure, oftentimes rely on sending actuation commands and sensor measurements over a network, subjecting this information to potential man-in-the-middle attacks. These attacks can take the form of denial of service attacks or integrity attacks. Previous approaches at ensuring the resiliency of the overall control system against these types of attacks have leveraged functional redundancy in the system, including resilient estimation and reconfigurable control. However, these approaches are only able to ensure resiliency up to a particular subset of the actuator commands and sensor measurements being compromised. In contrast, we introduce a resiliency …

Reducing Attack Vulnerabilities Through Decentralized Event-Triggered Control, Paul Griffioen, Raffaele Romagnoli, Bruce H. Krogh, Bruno Sinopoli

Faculty Work Comprehensive List

Decentralized control systems are widely used in a number of situations and applications. In order for these systems to function properly and achieve their desired goals, information must be propagated between agents, which requires connecting to a network. To reduce vulnerabilities to attacks that may be carried out through the network, we design an event-triggered mechanism for network connection and communication that minimizes the amount of time agents must be connected to the network, in turn decreasing communication costs. This mechanism is a function of only local information and ensures stability for the overall system in attack-free scenarios. Our approach …

Comparing The Protective Effects Of Resveratrol, Curcumin And Sulforaphane Against Lps/Ifn-Γ-Mediated Inflammation In Doxorubicin-Treated Macrophages, Eman Ramadan, Mohey Elmazar, Haidy A. Saleh

Pharmacy

Doxorubicin (DOX) chemotherapy is associated with the release of inflammatory cytokines from macrophages. This has been suggested to be, in part, due to DOX-mediated leakage of endotoxins from gut microflora, which activate Toll-like receptor 4 (TLR4) signaling in macrophages, causing severe inflammation. However, the direct function of DOX on macrophages is still unknown. In the present study, we tested the hypothesis that DOX alone is incapable of stimulating inflammatory response in macrophages. Then, we compared the anti-inflammatory effects of curcumin (CUR), resveratrol (RES) and sulforaphane (SFN) against lipopolysaccharide/interferon-gamma (LPS/IFN-γ)-mediated inflammation in the absence or presence of DOX. For this purpose, …

The Effect Of Blast Loading On Concrete Blast Walls With Different Materials And Geometries, Mohamed Hazem Awad, Aya Elhozayen

Civil Engineering

Blast loading tests have been developed in air by using ANSYS-AUTODYN program for simulation. The fourteen simulated models mainly conducted in four phases as first phase is discussing four models grouped in Group 1 consists of four concrete blast walls with double layer that subjected to four different masses of TNT (10, 50, 100, 500) kg. The main purpose for this group results to choose the proper TNT mass to use in the next phases of the research to make the comparison between models, involving pressure and damage, more obvious. The most appropriate mass is 100kg TNT to differentiate the …

Shifting Sands: The Reconfiguration Of Neoliberal Youth Penality, P Gray, R Smith

School of Law, Humanities and Social Sciences

This article begins by tracing the emergence of ‘therapeutic surveillance’ as a new formula for neoliberal disciplinary power. It maps and interrogates the reconfiguration of a hybrid array of neoliberal rationalities and technologies for the penal governance of young people who offend. It then engages with the challenges posed by critical realists to the governmentality position by questioning how human agency can contest, subvert and resist the dystopian reach of ‘therapeutic surveillance’ in action. While ‘therapeutic surveillance’ is steeped in a disciplinary logic of individualization and responsibilization, we argue that it also opens the space for a more transformative youth …

Hospital Readmission Among People Experiencing Homelessness In England: A Cohort Study Of 2772 Matched Homeless And Housed Inpatients, Dan Lewer, Dee Menezes, Michelle Cornes, Ruth M. Blackburn, Richard Byng, Michael Clark, Spiros Denaxas, Hannah Evans, James Fuller, Nigel Hewett, Alan Kilmister, Serena April Luchenski, Jill Manthorpe, Martin Mckee, Joanne Neale, Alistair Story, Michela Tinelli, Martin Whiteford, Fatima Wurie, Alexei Yavlinsky, Andrew Hayward, Robert Aldridge

Peninsula Medical School

BackgroundInpatients experiencing homelessness are often discharged to unstable accommodation or the street, which may increase the risk of readmission.MethodsWe conducted a cohort study of 2772 homeless patients discharged after an emergency admission at 78 hospitals across England between November 2013 and November 2016. For each individual, we selected a housed patient who lived in a socioeconomically deprived area, matched on age, sex, hospital, and year of discharge. Counts of emergency readmissions, planned readmissions, and Accident and Emergency (A&E) visits post-discharge were derived from national hospital databases, with a median of 2.8 years of follow-up. We estimated the cumulative incidence of …

Trends Of Open Access Self Archiving In E-Lis Repository With Specific Reference To Turkey, Ipsita Panda, Bulu Maharana

Library Philosophy and Practice (e-journal)

Open Access has already been there for last two decades as a model of scholarly communication. Among its multiple forms, Green Open Access or author self-archiving is increasingly becoming popular because of its barrier free (financial, technical and legal) and independent nature of publishing scholarly content. E-LIS, the discipline specific digital open archive aims to showcase e-prints of research papers in LIS and related fields. The present paper is the result of an effort to find out the contributions to E-LIS from Turkey which is the eighth major contributing nation in European continent (i.e. 417 out of 7556 submissions of …