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Articles 31 - 60 of 148
Full-Text Articles in Physical Sciences and Mathematics
An Ontology Based Context-Aware Architecture For Smart Campus Applications, Nicolas R. Verstaevel, Guillaume Garzone, Thierry Monteil, Nawal Guermouche, Johan Barthelemy, Pascal Perez
An Ontology Based Context-Aware Architecture For Smart Campus Applications, Nicolas R. Verstaevel, Guillaume Garzone, Thierry Monteil, Nawal Guermouche, Johan Barthelemy, Pascal Perez
SMART Infrastructure Facility - Papers
With an estimated number of more than 15 billion, objects, the management of architectures for the Internet of Things is a veritable challenge. The inherent mobility (in terms of devices and users) of the IoT means that the architecture has to be resilient to appearance and disappearance of devices. In this paper, we address the problem of autonomic management of IoT architecture by the means of ontologies. The problem we address is that given a dynamic system which is built upon a multitude of entities abstracted as services and characterized by their inputs and outputs, evolving targets that aim to …
Residual Stresses Induced In T Butt Welds From Submerged Arc Welding Of High Strength Thick Section Steel Members, Glen Sloan, S Pearce, Valerie M. Linton, X Ficquet, E Kingston, I Brown
Residual Stresses Induced In T Butt Welds From Submerged Arc Welding Of High Strength Thick Section Steel Members, Glen Sloan, S Pearce, Valerie M. Linton, X Ficquet, E Kingston, I Brown
SMART Infrastructure Facility - Papers
The overall residual stress profiles of a weld fabricated structures such as a submarine pressure hull fabricated using high strength welds joining quench and tempered steels is complex as they are the net profiles from the build-up or relaxation of the residual stresses induced into the welds and structural members from each step in the fabrication process. University of Adelaide with its research partners has attempted to increase the knowledge of residual stresses in this type of structure by undertaking a comprehensive residual stress measurement program using test pieces representing each stage of the fabrication of a submarine pressure hull …
Supply Chain Downstream Strategic Cost Evaluation Using L-Copras Method In Cross-Border E-Commerce, Lipeng Feng, Jun Ma, Yong Wang, Jie Yang
Supply Chain Downstream Strategic Cost Evaluation Using L-Copras Method In Cross-Border E-Commerce, Lipeng Feng, Jun Ma, Yong Wang, Jie Yang
SMART Infrastructure Facility - Papers
Cross-border E-commerce has grown exponentially in the past decade in global market. To gain global competition in product-convergent markets, China¿s over 200 thousands cross-border E-commerce businesses have focused more on the service and cost control of supply chain downstream. In this study, we analyse three strategic cost control measures, summarise ten evaluation criteria for cost and develop an evaluation method for cost control using an extended COmplex PRoportion ASsessment (COPRAS) method, named L-COPRAS. This method is proposed to deal with uncertain or linguistic expression on strategic cost measures with varied weights to different alternatives. A case study of helping a …
Examining The Effects Of Transport Policy On Modal Shift From Private Car To Public Bus, Ahm Mehbub Anwar, Jie Yang
Examining The Effects Of Transport Policy On Modal Shift From Private Car To Public Bus, Ahm Mehbub Anwar, Jie Yang
SMART Infrastructure Facility - Papers
Private vehicles have become the most common mode of daily travel. This is one effect of the poor accessibility of public transportation. This paper attempts to use a study based on a survey of commuters in order to devise ways of encouraging the use of public transportation. Two different public transport policies were examined: (i) once-an-hour direct bus service from home to university (policy 1), and (ii) park-and-ride facilities (policy 2). Binary logistics models are proposed with the intention of comparing the utility of travel modes between private cars and public buses. These models are also used to identify the …
Using Complex Fuzzy Sets For Strategic Cost Evaluation In Supply Chain Downstream, Jun Ma, Lipeng Feng, Jie Yang
Using Complex Fuzzy Sets For Strategic Cost Evaluation In Supply Chain Downstream, Jun Ma, Lipeng Feng, Jie Yang
SMART Infrastructure Facility - Papers
Cross-border E-commerce has grown exponentially in the past decade. To gain global competitivity in product-convergent markets, China's over 200 thousands cross-border E-commerce businesses have focused more on the service and cost of supply chain downstream. Therefore, selecting appropriate cost control strategy has marked impact on them. In this study, we evaluated three strategic cost control measures according to 10 evaluation criteria by using a complex fuzzy set based model, named C-COPRAS. The C-COPRAS model is an extension of the COmplex PRoportion ASessment (COPRAS) method. This model uses complex fuzzy set to tackle uncertainty and temporal features in given evaluation context. …
Impact Of Next Generation Infrastructure On Australian Cities, Joseph J. Branigan, Fariba Ramezani Khansari
Impact Of Next Generation Infrastructure On Australian Cities, Joseph J. Branigan, Fariba Ramezani Khansari
SMART Infrastructure Facility - Papers
The quality of the physical infrastructure in our major cities is just as critical as human capital development in terms of driving long-run growth in productivity and rising living standards. The provision of high-quality and reliable infrastructure network services (like roads, rail and telecommunications) can have significant social, environmental and economic payoffs. Notwithstanding the obvious intuitive connection between infrastructure investment and economic growth, the link between the two is still debated. One reason is that not all infrastructure investment supports growth over the long-term. Building a road or rail line that is not used for instance lowers productivity and economic …
Smart Is A Matter Of Context, Julien Nigon, Nicolas R. Verstaevel, Jeremy Boes, Frederic Migeon, Marie-Pierre Gleizes
Smart Is A Matter Of Context, Julien Nigon, Nicolas R. Verstaevel, Jeremy Boes, Frederic Migeon, Marie-Pierre Gleizes
SMART Infrastructure Facility - Papers
Smart cities involve, in a large scale, a wide array of interconnected components and agents, giving birth to large and heterogeneous data flows. They are inherently cross-disciplinary, provide interesting challenges, and constitute a very promising field for future urban developments, such as smart grids, eco-feedback, intelligent traffic control, and so on. We advocate that the key to these challenges is the proper modelling and exploitation of context. However, said context is highly dynamic and mainly unpredictable. Improved AI and machine learning techniques are required. Starting from some of the main smart cities features, this paper highlights the key challenges, explains …
Mapping For The Future: Business Intelligence Tool To Map Regional Housing Stock, Murad Safadi, Jun Ma, Rohan Wickramasuriya, Daniel J. Daly, Pascal Perez, Georgios Kokogiannakis
Mapping For The Future: Business Intelligence Tool To Map Regional Housing Stock, Murad Safadi, Jun Ma, Rohan Wickramasuriya, Daniel J. Daly, Pascal Perez, Georgios Kokogiannakis
SMART Infrastructure Facility - Papers
The amount of data available and the lack of data integration represent an increasing challenge to effective planning for government agencies. Integration of data from multiple sources has the potential to enable a user to draw valuable insights, which can be used to enhance service targeting and delivery, and to improve program evaluation. In recognition of the need to improve data integration the University of Wollongong and the NSW Office of Environment and Heritage (OEH) partnered to create an integrated housing stock database for the Illawarra region. The database serves as the backbone for an online and interactive Housing Stock …
Hybrid Method For Building Extraction In Vegetation-Rich Urban Areas From Very High-Resolution Satellite Imagery, Ajith Jayasekare, Rohan Wickramasuriya, Mohammad-Reza Namazi-Rad, Pascal Perez, Gaurav Singh
Hybrid Method For Building Extraction In Vegetation-Rich Urban Areas From Very High-Resolution Satellite Imagery, Ajith Jayasekare, Rohan Wickramasuriya, Mohammad-Reza Namazi-Rad, Pascal Perez, Gaurav Singh
SMART Infrastructure Facility - Papers
A continuous update of building information is necessary in today's urban planning. Digital images acquired by remote sensing platforms at appropriate spatial and temporal resolutions provide an excellent data source to achieve this. In particular, high-resolution satellite images are often used to retrieve objects such as rooftops using feature extraction. However, high-resolution images acquired over built-up areas are associated with noises such as shadows that reduce the accuracy of feature extraction. Feature extraction heavily relies on the reflectance purity of objects, which is difficult to perfect in complex urban landscapes. An attempt was made to increase the reflectance purity of …
Railnet: A Simulation Model For Operational Planning Of Rail Freight, Guillaume Michal, Nam N. Huynh, Nagesh Shukla, Albert Munoz, Johan Barthelemy
Railnet: A Simulation Model For Operational Planning Of Rail Freight, Guillaume Michal, Nam N. Huynh, Nagesh Shukla, Albert Munoz, Johan Barthelemy
SMART Infrastructure Facility - Papers
In many rail networks, infrastructure constraints force the shared usage of lines between passenger and freight movements. Scheduling additional freight movements around existing passenger services and peak traffic based curfews presents significant challenges to commodity industries eager to increase export volumes. This paper addresses the problem of inserting additional freight movements in a constrained railway network. To this end, a railway operations planning model was developed to simulate and insert feasible rail movements in a non-periodic timetable. The simulation modelling platform developed in this paper is called RailNet, which simulates the existing railway network constraints and is capable of adding …
Cyber Security Incidents On Critical Infrastructure And Industrial Networks, Robert Ighodaro Ogie
Cyber Security Incidents On Critical Infrastructure And Industrial Networks, Robert Ighodaro Ogie
SMART Infrastructure Facility - Papers
National critical infrastructure and industrial processes are heavily reliant on automation, monitoring and control technologies, including the widely used Supervisory Control and Data Acquisition (SCADA) systems. The growing interconnection of these systems with corporate networks exposes them to cyber attacks, with several security incidents reported over the last few decades. This study provides a classification scheme for categorising security incidents related to critical infrastructure and industrial control systems. The classification scheme is applied to analyse 242 security incidents on critical infrastructure and industrial control networks, which were reported between 1982 and 2014. The results show interesting patterns, with key points …
Data Mining In Educational Technology Classroom Research: Can It Make A Contribution?, Charoula Angeli, Sarah Katherine Howard, Jun Ma, Jie Yang, Paul A. Kirschner
Data Mining In Educational Technology Classroom Research: Can It Make A Contribution?, Charoula Angeli, Sarah Katherine Howard, Jun Ma, Jie Yang, Paul A. Kirschner
SMART Infrastructure Facility - Papers
The paper addresses and explains some of the key questions about the use of data mining in educational technology classroom research. Two examples of use of data mining techniques, namely, association rules mining and fuzzy representations are presented, from a study conducted in Europe and another in Australia. Both of these studies examine student learning, behaviors, and experiences within computer-supported classroom activities. In the first study, the technique of association rules mining was used to understand better how learners with different cognitive types interacted with a simulation to solve a problem. Association rules mining was found to be a useful …
An Adaptive Agent-Based Approach To Traffic Simulation, Johan Barthelemy, Timoteo Carletti
An Adaptive Agent-Based Approach To Traffic Simulation, Johan Barthelemy, Timoteo Carletti
SMART Infrastructure Facility - Papers
The aim of this work is to present the initial exploration of a behavioural Dynamic Traffic Assignment model, particularly suitable to be used and implemented in agent-based micro-simulations. The proposal relies on the assumption that travellers take routing policies rather than paths, leading us to introduce the possibility for each simulated agent to apply, in real time, a strategy allowing him to possibly re-route his path depending on the perceived local traffic conditions, jam and/or time spent. The re-routing process allows the agents to directly react to any change in the road network. For the sake of simplicity, the agents' …
A Dynamic Behavioural Traffic Assignment Model With Strategic Agents, Johan Barthelemy, Timoteo Carletti
A Dynamic Behavioural Traffic Assignment Model With Strategic Agents, Johan Barthelemy, Timoteo Carletti
SMART Infrastructure Facility - Papers
Foresee traffic conditions and demand is a major issue nowadays that is very often approached using simulation tools. The aim of this work is to propose an innovative strategy to tackle such problem, relying on the presentation and analysis of a behavioural dynamic traffic assignment. The proposal relies on the assumption that travellers take routing policies rather than paths, leading us to introduce the possibility for each simulated agent to apply, in real time, a strategy allowing him to possibly re-route his path depending on the perceived local traffic conditions, jam and/or time already spent in his journey. The re-routing …
Smart Infrastructure: An Emerging Frontier For Multidisciplinary Research, Robert Ighodaro Ogie, Pascal Perez, Virginia Dignum
Smart Infrastructure: An Emerging Frontier For Multidisciplinary Research, Robert Ighodaro Ogie, Pascal Perez, Virginia Dignum
SMART Infrastructure Facility - Papers
The irreversible marriage between digital technology and physical urban infrastructure has given rise to the concept of smart infrastructure. The potential benefits of smart infrastructure are significant; however, their realisation will depend on society's ability to address pressing issues, such as the need to develop a common language to describe terms and processes. This paper aims to lay out the foundations of such a common language. First, the authors review academic literature in order to outline key characteristics of so-called smart infrastructure systems. Importantly, the authors define and differentiate between smart and intelligent infrastructure systems. Then, the authors use an …
Upgrading Rail Connectivity Between Illawarra And Sydney, Joseph J. Branigan, Fariba Ramezani Khansari
Upgrading Rail Connectivity Between Illawarra And Sydney, Joseph J. Branigan, Fariba Ramezani Khansari
SMART Infrastructure Facility - Papers
The Illawarra Business Chamber (Illawarra First) commissioned the SMART Infrastructure Facility UOW (SMART) to investigate options to improve the speed and reliability of passenger and freight rail transport services between the Illawarra and Sydney.
Assessing Infrastructure System Of Systems Integrity, Ricardo Peculis, Farid Shirvani, Pascal Perez
Assessing Infrastructure System Of Systems Integrity, Ricardo Peculis, Farid Shirvani, Pascal Perez
SMART Infrastructure Facility - Papers
Infrastructure refers to the fundamental facilities and systems serving a country, city, or area, including the services and facilities necessary for its economy to function. Infrastructure systems typically consist of interrelated constituent systems forming what is known as system of systems (SoS). Infrastructure systems present numerous challenges throughout their lifecycles. This paper addresses one of these challenges that is presented during operation, when managers need to report 'how well' the system is performing and finding ways to address the consequences of unexpected events that often degrade the intended performance. This state of system 'wellbeing' will be referred as system integrity …
Lifelong Machine Learning With Adaptive Multi-Agent Systems, Nicolas R. Verstaevel, Jeremy Boes, Julien Nigon, Dorian D'Amico, Marie-Pierre Gleizes
Lifelong Machine Learning With Adaptive Multi-Agent Systems, Nicolas R. Verstaevel, Jeremy Boes, Julien Nigon, Dorian D'Amico, Marie-Pierre Gleizes
SMART Infrastructure Facility - Papers
Sensors and actuators are progressively invading our everyday life as well as industrial processes. They form complex and pervasive systems usually called "ambient systems" or "cyber-physical systems". These systems are supposed to efficiently perform various and dynamic tasks in an ever-changing environment. They need to be able to learn and to self-adapt throughout their life, because designers cannot specify a priori all the interactions and situations they will face. These are strong requirements that push the need for lifelong machine learning, where devices can learn models and behaviours during their whole lifetime and are able to transfer them to perform …
Investigating The Accuracy Of Georeferenced Social Media Data For Flood Mapping: The Petajakarta.Org Case Study, Robert Ighodaro Ogie, Hugh I. Forehead
Investigating The Accuracy Of Georeferenced Social Media Data For Flood Mapping: The Petajakarta.Org Case Study, Robert Ighodaro Ogie, Hugh I. Forehead
SMART Infrastructure Facility - Papers
Georeferenced social media data are gaining increased application in creating near real-time flood maps needed to improve situational awareness in data-starved regions. However, there is growing concern that the georeferenced locations of flood-related social media contents do not always correspond to the actual locations of the flooding event. But to what extent is this true? Without this knowledge, it is difficult to ascertain the accuracy of flood maps created using georeferenced social media contents. This study aims to improve understanding of the extent to which georeferenced locations of social media flood reports deviate from the actual locations of floods. The …
Infrastructure System Of Systems Integrity, Ricardo Peculis, Farid Shirvani
Infrastructure System Of Systems Integrity, Ricardo Peculis, Farid Shirvani
SMART Infrastructure Facility - Papers
Infrastructure systems typically consist of technical structures comprising of physical and operational components of interrelated constituent systems forming what is now known as system of systems (SOS). The complexity and uncertainty of unforeseen events that are inherent characteristic of infrastructure systems makes it impossible to predict undesirable emergent behaviours that could push the operation of such systems away from their intended purposes. Infrastructure systems present numerous challenges throughout their lifecycles. This paper addresses one of these challenges that is presented during operation, when managers need to report 'how well' the system is performing and find ways to address the consequences …
Coping With Social Complexity Of Infrastructure Projects, Ricardo Peculis
Coping With Social Complexity Of Infrastructure Projects, Ricardo Peculis
SMART Infrastructure Facility - Papers
Infrastructure projects are complex and technical complexity is dwarfed when compared with the social complexity caused by the interaction of individuals and organisations that participate and influence these projects. During conception and planning, uncertainty and conflicting motivations influence decisions that drive the solution and plans that are carried out during construction, operation and finally disposal of the system. If the need is not accurately conveyed and the solution is not properly defined, estimated and planned, infrastructure projects become subject of costs overrun and schedule delays of serious consequences, including the possibility that they may not satisfy the real need. Understanding …
Social Media Analysis On Evaluating Organizational Performance: A Railway Service Management, Jie Yang, Ahm Mehbub Anwar
Social Media Analysis On Evaluating Organizational Performance: A Railway Service Management, Jie Yang, Ahm Mehbub Anwar
SMART Infrastructure Facility - Papers
The last decade has witnessed the dramatic expansion of online social media at the global level. It is widely believed that the influence of social media is of particular importance for public and private organisations. Unfortunately, there is very limited and anecdotal evidence to show the durable influence of social media on various components and functions within organisations. To this end, this study examines the impact of social media, particularly taking the railway services in New South Wales (NSW), Australia and the Twitter platform as an illustrative example. Topic modelling and sentiment analysis techniques are employed to analyse collected tweets …
A Fuzzy Rough Sets-Based Multi-Agent Analytics Framework For Dynamic Supply Chain Configuration, Nagesh Shukla, Senevi Kiridena
A Fuzzy Rough Sets-Based Multi-Agent Analytics Framework For Dynamic Supply Chain Configuration, Nagesh Shukla, Senevi Kiridena
SMART Infrastructure Facility - Papers
Considering the need for more effective decision support in the context of distributed manufacturing, this paper develops an advanced analytics framework for configuring supply chain networks. The proposed framework utilizes a distributed multi-agent system architecture to deploy fuzzy rough sets-based algorithms for knowledge elicitation and representation. A set of historical sales data, including network node-related information, is used together with the relevant details of product families to predict supply chain configurations capable of fulfilling desired customer orders. Multiple agents such as data retrieval agent, knowledge acquisition agent, knowledge representation agent, configuration predictor agent, evaluator agent and dispatching agent are used …
Simulation-Based Evaluation Of An Integrated Planning And Scheduling Algorithm For Maintenance Projects, Rohit Patil, Nagesh Shukla, Senevi Kiridena
Simulation-Based Evaluation Of An Integrated Planning And Scheduling Algorithm For Maintenance Projects, Rohit Patil, Nagesh Shukla, Senevi Kiridena
SMART Infrastructure Facility - Papers
The field of maintenance project planning and scheduling is attracting increasing attention due to ever growing competition among manufacturing organisations. There is a lack of studies that has tackled all the aspects of maintenance project implementation such as costs, resources, down times, uncertainties, operational constraints, among others. Therefore, an approach which uses a unitary structuring method and discrete event simulation to integrate relevant data about the maintenance projects is proposed. The results of the evaluation, on a case from paper-pulp industry, have shown that the proposed approach is able to overcome most of the issues of maintenance planning and scheduling.
Big Data, Big Theory: Moving Beyond New Empiricism To Generate Powerful Explanations, Sarah Katherine Howard, Karl A. Maton, Ellie Rennie, Jun Ma, Jie Yang, Julian Thomas, Matthew Ciao, Rangan Srikhanta
Big Data, Big Theory: Moving Beyond New Empiricism To Generate Powerful Explanations, Sarah Katherine Howard, Karl A. Maton, Ellie Rennie, Jun Ma, Jie Yang, Julian Thomas, Matthew Ciao, Rangan Srikhanta
SMART Infrastructure Facility - Papers
Abstract presented at the 3rd ISA Forum of Sociology, 10-14 July 2016, Vienna, Austria
A Review Of Supply Network Configuration Literature And Decision Support Tools, Subodha Dharmapriya, Senevi Kiridena, Nagesh Shukla
A Review Of Supply Network Configuration Literature And Decision Support Tools, Subodha Dharmapriya, Senevi Kiridena, Nagesh Shukla
SMART Infrastructure Facility - Papers
Supply chain literature highlights the increasing importance of effective supply network configuration decisions that take in to account such realities as market turbulence and demand volatility, as well as ever expanding global production networks. Supply network configurations decisions that account for these contingencies are expected to meet the evolving needs of customers while delivering better outcomes for all parties involved. This paper presents the findings of a structured review of supply network configuration literature which is synthesized under the two categories, drivers of supply network configuration decisions and the key parameters considered in developing decision support tools. This review also …
Principles And Experimentations Of Self-Organizing Embedded Agents Allowing Learning From Demonstration In Ambient Robotics, Nicolas R. Verstaevel, Christine Regis, Marie-Pierre Gleizes, Fabrice Robert
Principles And Experimentations Of Self-Organizing Embedded Agents Allowing Learning From Demonstration In Ambient Robotics, Nicolas R. Verstaevel, Christine Regis, Marie-Pierre Gleizes, Fabrice Robert
SMART Infrastructure Facility - Papers
Ambient systems are populated by many heterogeneous devices to provide adequate services to their users. The adaptation of an ambient system to the specific needs of its users is a challenging task. Because human-system interaction has to be as natural as possible, we propose an approach based on Learning from Demonstration (LfD). LfD is an interesting approach to generalize what has been observed during the demonstration to similar situations. However, using LfD in ambient systems needs adaptivity of the learning technique. We present ALEX, a multi-agent system able to dynamically learn and reuse contexts from demonstrations performed by a tutor. …
Solving Continuous Network Design Problem With Generalized Geometric Programming Approach, Bo Du, David Wang
Solving Continuous Network Design Problem With Generalized Geometric Programming Approach, Bo Du, David Wang
SMART Infrastructure Facility - Papers
To satisfy growing travel demand and reduce traffic congestion, the continuous network design problem (CNDP) is often proposed to optimize road network performance by the expansion of road capacity. In the determination of the equilibrium travel flow pattern, equilibrium principles such as deterministic user equilibrium (DUE) and stochastic user equilibrium (SUE) may be applied to describe travelers' route choice behavior. Because of the different mathematical formulation structures for the CNDP with DUE and SUE principles, most of the existing solution algorithms have been developed to solve the CNDP for either DUE or SUE. In this study, a more general solution …
A Heuristic Combinatorial Optimisation Approach To Synthesising A Population For Agent-Based Modelling Purposes, Nam N. Huynh, Johan Barthelemy, Pascal Perez
A Heuristic Combinatorial Optimisation Approach To Synthesising A Population For Agent-Based Modelling Purposes, Nam N. Huynh, Johan Barthelemy, Pascal Perez
SMART Infrastructure Facility - Papers
This paper presents an algorithm that follows the sample-free approach to synthesise a population for agent based modelling purposes. This algorithm is among the very few in the literature that do not rely on a sample survey data to construct a synthetic population, and thus enjoy a potentially wider applications where such survey data is not available or inaccessible. Different to existing sample-free algorithms, the population synthesis presented in this paper applies the heuristics to part of the allocation of synthetic individuals into synthetic households. As a result the iterative process allocating individuals into households, which normally is the most …
Individual-Level Simulation Model For Cost Benefit Analysis In Healthcare, Nagesh Shukla, Vu Lam Cao, Van Hoang Phuong, Marian D. Shanahan, Alison Ritter, Pascal Perez
Individual-Level Simulation Model For Cost Benefit Analysis In Healthcare, Nagesh Shukla, Vu Lam Cao, Van Hoang Phuong, Marian D. Shanahan, Alison Ritter, Pascal Perez
SMART Infrastructure Facility - Papers
Illicit drug use creates significant burden at societal, family and personal levels. Every year substantial resources are allocated for treatment and the consequences of illicit drug use in Australia and around the world. Heroin is one of the major forms of illicit drugs. Several independent heroin treatment strategies or interventions exist and state-of-the art research demonstrates their efficacy and relative costeffectiveness. However, assessing total potential gains and burden from providing all treatment interventions or varying the mix of heroin treatments has never been attempted. This paper proposed an individual-level simulation model (ISM) which addresses net social benefit over a lifetime …