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Articles 1051 - 1080 of 2377
Full-Text Articles in Physical Sciences and Mathematics
Nitrogen Flow Pathways Through An Alpine Lake, David Epstein, Wayne Wurtsbaugh
Nitrogen Flow Pathways Through An Alpine Lake, David Epstein, Wayne Wurtsbaugh
David Epstein
No abstract provided.
Nutrient Transport Through Lakes In A Sub-Alpine Watershed In The Sawtooth Mountains Of Idaho, David Epstein
Nutrient Transport Through Lakes In A Sub-Alpine Watershed In The Sawtooth Mountains Of Idaho, David Epstein
David Epstein
No abstract provided.
Nitrogen Transport Through A Sub-Alpine Lake: Bull Trout Lake Whole Ecosystem 15N Tracer Study, David Epstein, Wayne Wurtsbaugh
Nitrogen Transport Through A Sub-Alpine Lake: Bull Trout Lake Whole Ecosystem 15N Tracer Study, David Epstein, Wayne Wurtsbaugh
David Epstein
No abstract provided.
A Coloured Petri Net Based Approach For Flexible Agent Interactions, Quan Bai, Minjie Zhang, Fenghui Ren
A Coloured Petri Net Based Approach For Flexible Agent Interactions, Quan Bai, Minjie Zhang, Fenghui Ren
Dr Fenghui Ren
As one of the most important artificial intelligence techniques, multi-agent systems are widely applied in many fields. In a multi-agent system, agent interactions are established through exchanging messages by following some interaction protocols. However, as the application domains of MASs are getting more and more complex, some limitations of current multi-agent interaction mechanisms are rising up. To cover some limitations of current agent interaction mechanisms, in this paper, we propose a Coloured Petri Net based approach to enable flexible agent interactions in open environments. This approach adopts Coloured Petri Net techniques to model agent interaction protocols, and separates interaction protocols …
Desire-Based Negotiation In Electronic Marketplaces, Minjie Zhang, Fenghui Ren
Desire-Based Negotiation In Electronic Marketplaces, Minjie Zhang, Fenghui Ren
Dr Fenghui Ren
No abstract provided.
A Novel Multi-Image Query Techniques For Automatic Query Concept Capture, Fenghui Ren, Philip Ogunbona, Lei Ye
A Novel Multi-Image Query Techniques For Automatic Query Concept Capture, Fenghui Ren, Philip Ogunbona, Lei Ye
Dr Fenghui Ren
No abstract provided.
A Regression-Based Approach For Improving The Association Rule Mining Through Predicting The Number Of Rules On General Datasets, Dien Tuan Le, Fenghui Ren, Minjie Zhang
A Regression-Based Approach For Improving The Association Rule Mining Through Predicting The Number Of Rules On General Datasets, Dien Tuan Le, Fenghui Ren, Minjie Zhang
Dr Fenghui Ren
Association rule mining is one of the useful techniques in data mining and knowledge discovery that extracts interesting relationships between items in datasets. Generally, the number of association rules in a particular dataset mainly depends on the measures of support and confidence To choose the number of useful rules, normally, the measures of support and confidence need to be tried many times. In some cases, the measures of support and confidence are chosen by experience. Thus, it is a time consuming to find the optimal measure of supportand confidence for the process of association rule mining in large datasets. This …
Partners Selection In Multi-Agent Systems By Using Linear And Non-Linear Approaches, Minjie Zhang, Fenghui Ren
Partners Selection In Multi-Agent Systems By Using Linear And Non-Linear Approaches, Minjie Zhang, Fenghui Ren
Dr Fenghui Ren
No abstract provided.
Using Colored Petri Nets To Predict Future States In Agent-Based Scheduling And Planning Systems, Minjie Zhang, John Fulcher, Quan Bai, Fenghui Ren
Using Colored Petri Nets To Predict Future States In Agent-Based Scheduling And Planning Systems, Minjie Zhang, John Fulcher, Quan Bai, Fenghui Ren
Dr Fenghui Ren
No abstract provided.
Bilateral Single-Issue Negotiation Model Considering Nonlinear Utility And Time Constraint, Fenghui Ren, Minjie Zhang, John Fulcher
Bilateral Single-Issue Negotiation Model Considering Nonlinear Utility And Time Constraint, Fenghui Ren, Minjie Zhang, John Fulcher
Dr Fenghui Ren
Bilateral single-issue negotiation is studied a lot by researchers as a fundamental research issue in agent negotiation. During a negotiation with time constraint, a negotiation decision function is usually predefined by negotiators to express their expectations on negotiation outcomes in different rounds. By combining the negotiation decision function with negotiators' utility functions, offers can be generated accurately and efficiently to satisfy negotiators expectations in each round. However, such a negotiation procedure may not work well when negotiators' utility functions are nonlinear. For example, if negotiators' utility functions are non-monotonic, negotiators may find several offers that come with the same utility; …
An Introduction To Kac-Moody Groups, Jacqueline Ramagge
An Introduction To Kac-Moody Groups, Jacqueline Ramagge
Professor Jacqui Ramagge
No abstract provided.
Groups, Representations And Haagerup´S Inequality For Buildings, Jacqueline Ramagge
Groups, Representations And Haagerup´S Inequality For Buildings, Jacqueline Ramagge
Professor Jacqui Ramagge
No abstract provided.
Factors From Buildings, Jacqueline Ramagge, A Robertson
Factors From Buildings, Jacqueline Ramagge, A Robertson
Professor Jacqui Ramagge
No abstract provided.
Phase Transition On Exel Crossed Products Associated To Dilation Matrices, Marcelo Laca, Iain Raeburn, Jacqui Ramagge
Phase Transition On Exel Crossed Products Associated To Dilation Matrices, Marcelo Laca, Iain Raeburn, Jacqui Ramagge
Professor Jacqui Ramagge
No abstract provided.
Experience With Change Evaluations Suggests The Need For Better Learning Designs: One Possibility For Mathematics, Bothaina Bukhatowa, Anne Porter, Mark Nelson
Experience With Change Evaluations Suggests The Need For Better Learning Designs: One Possibility For Mathematics, Bothaina Bukhatowa, Anne Porter, Mark Nelson
Associate Professor Anne Porter
A Change Evaluation was conducted in the School of Mathematics and Applied Statistics, at the University of Wollongong (UOW) with a view to identifying which resources to improve in order to facilitate better student learning outcomes. One hundred and thirty students took the subject MATH151 during the autumn term of the 2010 academic year with 101 students responding to the evaluation questionnaire. Data collection was used to discover which resources had the greatest potential for improvement or replacement and to examine if the structure of the subject could be improved for better student understanding and learning. The survey was also …
Assessment As A Tool For Learning, Maureen Morris, Anne Porter, David Atherton Griffiths
Assessment As A Tool For Learning, Maureen Morris, Anne Porter, David Atherton Griffiths
Associate Professor Anne Porter
Assessment should provide a catalyst for student learning and for reflective teaching practices. Fundamental to the development of appropriate assessment must be a direct link between what is being taught and what is being learned. Both teacher and student must be able to identify this link. The teacher needs to ensure the relevance and validity of the task in terms of both the instructional process and subject objectives. Student learning results in the construction of new knowledge through a process that assembles personally identified content and skills. Subsequent assessment may be facilitated by classification of learning outcomes. The use of …
Modifiable And Shareable Electronic Maps Of Mathematical Learning Resources For Use In Developing Countries; A Case Study Of Bojonegara Sub District, Indonesia, Maman Fathurrohman, Anne Porter
Modifiable And Shareable Electronic Maps Of Mathematical Learning Resources For Use In Developing Countries; A Case Study Of Bojonegara Sub District, Indonesia, Maman Fathurrohman, Anne Porter
Associate Professor Anne Porter
Teaching and learning of mathematics are integral parts of societies in many countries in the world. The fundamental or core nature of mathematics, its compulsory acquisition, requires a high quality of mathematics learning experiences. Moreover it is highly desirable that the emergence of new technology positively influences learning experiences in mathematics. Since 81.5 % of countries in the world belong to developing countries, it is important that technologybased learning experiences are implemented in these countries. Based on observation in Bojonegara Sub District, Indonesia, a prototype of modifiable and shareable electronic maps and its concept and design would be useful for …
Addressing The Needs Of A Developing Nation: Electronic Maps Of Mathematical Learning Resources Accessible Via The Internet, Maman Fathurrohman, Anne Porter
Addressing The Needs Of A Developing Nation: Electronic Maps Of Mathematical Learning Resources Accessible Via The Internet, Maman Fathurrohman, Anne Porter
Associate Professor Anne Porter
Teaching and learning of mathematics are integral parts of societies throughout the world. The fundamental or core nature of mathematics, its compulsory acquisition, requires high quality mathematics learning experiences. Moreover it is highly desirable that the emergence of new technology positively influences learning experiences in mathematics. Since 81.5 per cent of countries in the world belong to developing countries, it is important that technology-based learning experiences are implemented in these countries. Based on a survey in Bojonegara Sub District, Indonesia, a prototype of modifiable and shareable electronic maps has been developed. This product would be useful for teachers mapping mathematical …
Choosing A Fishery's Governance Structure Using Data Poor Methods, Cathy Dichmont, S Pascoe, Edward Jebreem, R Pears, Kate Brooks, Pascal Perez
Choosing A Fishery's Governance Structure Using Data Poor Methods, Cathy Dichmont, S Pascoe, Edward Jebreem, R Pears, Kate Brooks, Pascal Perez
Professor Pascal Perez
No abstract provided.
One Fish, Two Fish, Red Fish, Blue Fish: The Use Of Simple Agent-Based Models And Role-Play Games To Communicate Key Messages To Community Groups, Deborah Cleland, Rollan Geronimo, A Dray, Pascal Perez, Abigail Trinidad
One Fish, Two Fish, Red Fish, Blue Fish: The Use Of Simple Agent-Based Models And Role-Play Games To Communicate Key Messages To Community Groups, Deborah Cleland, Rollan Geronimo, A Dray, Pascal Perez, Abigail Trinidad
Professor Pascal Perez
The principal anthropogenic factors driving reef degradation have been known for years, if not decades. Overfishing, sedimentation and nutrient loads are just some of the key impacts of human activities in and around reef communities. Therefore, the future of reefs does not rely on generating new knowledge, but rather on implementing and integrating the knowledge we already have. This will require creating effective links between researchers, managers and communities to promote mutual learning, negotiation and collaborative action for reef management. Combining agent-based models and role-play games, through a technique known as Companion Modelling (ComMod), creates a dynamic and interactive setting …
Coupling Biophysical And Socioeconomic Models For Coral Reef Systems In Quintana Roo, Mexican Caribbean, Deborah Cleland, Jess Melbourne-Thomas, Craig Johnson, Pascal Perez, Jeremy Eustache, Elizabeth Fulton
Coupling Biophysical And Socioeconomic Models For Coral Reef Systems In Quintana Roo, Mexican Caribbean, Deborah Cleland, Jess Melbourne-Thomas, Craig Johnson, Pascal Perez, Jeremy Eustache, Elizabeth Fulton
Professor Pascal Perez
No abstract provided.
Providing Social Science Objectives And Indicators To Compare Management Options In The Queensland Trawl Planning Process, Cathy Dichmont, S Pascoe, E Jebreen, R Pears, Kate Brooks, Pascal Perez
Providing Social Science Objectives And Indicators To Compare Management Options In The Queensland Trawl Planning Process, Cathy Dichmont, S Pascoe, E Jebreen, R Pears, Kate Brooks, Pascal Perez
Professor Pascal Perez
No abstract provided.
Simkat: A Virtual Laboratory To Explore The Impact Of Climate Change Scenarios On The Western Australian Wheat-Belt, A Dray, S Asseng, Pascal Perez, S Charles, B Bates
Simkat: A Virtual Laboratory To Explore The Impact Of Climate Change Scenarios On The Western Australian Wheat-Belt, A Dray, S Asseng, Pascal Perez, S Charles, B Bates
Professor Pascal Perez
The northernmost part of the Mesoamerican Barrier Reef (MBR) runs along the eastern Yucatan peninsula (Mexico). Over two decades, sprawling coastal tourism development and over-exploitation of marine resources have considerably reduced fringing reef's ecological functions. SimReef is an interactive model designed to better understand the interactions between regional and local drivers strongly influencing the health of coral reefs. SimReef's development follows a collective design approach and an inductive process whereby dynamics are represented by data-driven relationships. Experts and stakeholders participate to the designing phase in order to help calibrating the model and to support a consensual validation of the results.
Simamph: An Agent-Based Simulation Model For Exploring The Use Of Psychostimulants And Related Harm Amongst Young Australians, Pascal Perez, Anne Dray, David Moore, Paul Dietze, Gabriele Bammer, Rebecca Jenkinson, Christine Siokou, Rachael Green, Susan Hudson, Lisa Maher
Simamph: An Agent-Based Simulation Model For Exploring The Use Of Psychostimulants And Related Harm Amongst Young Australians, Pascal Perez, Anne Dray, David Moore, Paul Dietze, Gabriele Bammer, Rebecca Jenkinson, Christine Siokou, Rachael Green, Susan Hudson, Lisa Maher
Professor Pascal Perez
Background: Computer simulations provide a useful tool for bringing together diverse sources of information in order to increase understanding of the complex aetiology of drug use and related harm, and to inform the development of effective policies. In this paper, we describe SimAmph, an agent-based simulation model for exploring how individual perceptions, peer influences and subcultural settings shape the use of psychostimulants and related harm amongst young Australians. Methods: We present the conceptual architecture underpinning SimAmph, the assumptions we made in building it, the outcomes of sensitivity analysis of key model parameters and the results obtained when we modelled a …
Small Town Water Governance In Developing Countries: The Uncertainty Curse, Magnus Moglia, Pascal Perez, Stewart Burn
Small Town Water Governance In Developing Countries: The Uncertainty Curse, Magnus Moglia, Pascal Perez, Stewart Burn
Professor Pascal Perez
lack of consideration of local circumstances and process requirements, and in particular inadequate involvement of affected stakeholders as well as inadequate cross-sectorial coordination. This is not surprising given poor organizational memory combined with decisions being made under time pressure and strict deadlines combined with little adaptive capacity. Additionally, information about the importance of process requirements and engagement is qualitative and as such is unfortunately often given secondary importance. To address this, we suggest a Risk assessment component as part of the project design phase based on Bayesian Networks (BNs) utilizing expert and local knowledge. This not only improves organizational memory …
Simreef: An Agent-Based Model To Address Coastal Management Issues In The Yucatan Peninsula, Mexico, Pascal Perez, A Dray, Deborah Cleland, Jesus Ernesto Arias-Gonzalez
Simreef: An Agent-Based Model To Address Coastal Management Issues In The Yucatan Peninsula, Mexico, Pascal Perez, A Dray, Deborah Cleland, Jesus Ernesto Arias-Gonzalez
Professor Pascal Perez
The northernmost part of the Mesoamerican Barrier Reef (MBR) runs along the eastern Yucatan peninsula (Mexico). Over two decades, sprawling coastal tourism development and over-exploitation of marine resources have considerably reduced fringing reef’s ecological functions. SimReef is an interactive model designed to better understand the interactions between regional and local drivers strongly influencing the health of coral reefs. SimReef’s development follows a collective design approach and an inductive process whereby dynamics are represented by data-driven relationships. Experts and stakeholders participate to the designing phase in order to help calibrating the model and to support a consensual validation of the results.
Taking Participatory In Participatory Modelling Seriously, Y Maru, K Alexandridis, Pascal Perez
Taking Participatory In Participatory Modelling Seriously, Y Maru, K Alexandridis, Pascal Perez
Professor Pascal Perez
Over the last three decades participatory research processes have informed much international development and conservation work in developing countries. Public participation is also a growing legislative requirement in natural resource and environmental management in developed countries. So far, multiple participatory approaches have been formulated and applied in different contexts, including so-called participatory modelling methods. The latter have developed alongside a growing unease and fundamental critique of the participatory approaches and their theoretical underpinnings. One of the central themes running through the critique is the naivete with which complexities of power relations are assumed to be understood and addressed in participatory …
Participatory Assessment Of Water Developments In An Atoll Town, Magnus Moglia, Pascal Perez
Participatory Assessment Of Water Developments In An Atoll Town, Magnus Moglia, Pascal Perez
Professor Pascal Perez
Water development projects often fail, which represents a poor outcome given the limited progress against the Millennium Development Goals in providing people with adequate water and sanitation services. This may not be surprising given that water management has been identified as being in the complex system domain. According to the Cynefin framework, many traditional approaches are not suitable; but it suggests an approach based on the methods of probe, sense and respond. In line with this general framework, a participatory assessment methodology has been used to explore experiences in the atoll town of Tarawa in the Republic of Kiribati. After …
Are Drug Detection Dogs And Mass-Media Campaigns Likely To Be Effective Policy Responses To Psychostimulant Use And Related Harm? Results From An Agent-Based Simulation Model, David Moore, Lisa Maher, Christine Siokou, Rachael Green, Anne Dray, Rebecca Jenkinson, Susan Hudson, Gabriele Bammer, Pascal Perez, Paul Dietze
Are Drug Detection Dogs And Mass-Media Campaigns Likely To Be Effective Policy Responses To Psychostimulant Use And Related Harm? Results From An Agent-Based Simulation Model, David Moore, Lisa Maher, Christine Siokou, Rachael Green, Anne Dray, Rebecca Jenkinson, Susan Hudson, Gabriele Bammer, Pascal Perez, Paul Dietze
Professor Pascal Perez
Background Agent-based simulation models can be used to explore the impact of policy and practice on drug use and related consequences. In a linked paper (Perez et al., 2011), we described SimAmph, an agent-based simulation model for exploring the use of psychostimulants and related harm amongst young Australians. Methods In this paper, we use the model to simulate the impact of two policy scenarios on engagement in drug use and experience of drug-related harm: (i) the use of passive-alert detection (PAD) dogs by police at public venues and (ii) the introduction of a mass-media drug prevention campaign. Results The findings …
Allocated Harmonic Quantities As The Basis For Source Detection, Timothy Browne, Sarath Perera, Victor Gosbell
Allocated Harmonic Quantities As The Basis For Source Detection, Timothy Browne, Sarath Perera, Victor Gosbell
Associate Professor Sarath Perera
A considerable body of literature examines assessment, from measurements, of whether it is the network or a customer installation which makes the greater contribution to harmonic distortion at a point of common coupling. However, the customer contribution to harmonic distortion at a point of common coupling depends heavily upon the definition chosen for that contribution. For example, expressing contributions as currents instead of voltages or vice versa may lead to large changes in results. Further, it can be shown that the harmonic voltage at the point of common coupling cannot be expressed independently of the network conditions, meaning that the …