network modeling Articles
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Topological clustering as a tool for planning water quality monitoring in water distribution networks
Topological clustering was explored as a tool for water supply utilities in preparation of monitoring and contamination contingency plans. A complex water distribution network model of Copenhagen, Denmark, was simplified by topological clustering into recognizable water movement patterns to: (1) identify steady clusters for a part of the network where an actual contamination has occurred; (2) ...
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A real-life test bed for multi-agent monitoring of road network performance
This paper describes an approach to road network monitoring. The approach has the following main components: a multi-agent hierarchical monitoring system in which the agents are network elements such as crossings, road segments and routes, software engineering techniques to handle legacy sensors and to homogenise their heterogeneous data streams, distributed Kalman filtering to reduce sensor ...
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Multiple sensor fault detection and isolation of an air quality monitoring network using RBF-NLPCA model
This paper presents a data-driven method based on non-linear principal component analysis to detect and isolate multiple sensor faults. The RBF-NLPCA model is obtained by combining a principal curve algorithm and two three-layer radial basis function (RBF) networks. The reconstruction approach for multiple sensors is proposed in the non-linear case and successfully applied for multiple sensor ...
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A congestion sensitive approach to modelling road networks for air quality management
This research establishes an approach to modelling a congested road network for air quality management, which enables the assessment of traffic management solutions that may create only subtle changes in the traffic flow regimes. Road network emissions have been calculated using standard factors taking into account details of vehicle fleet composition, average speeds and road type. Additionally, ...
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Practical use of the ISCST3 model to select monitoring site locations for air pollution control
We present an objective methodology for selection of the minimum number of sampling sites required to register the highest concentration values of air pollutants emitted from a continuous point source. The methodology is based on the analysis of 1-hour concentration values above a threshold value estimated by atmospheric dispersion models. The number and location of the air monitoring stations ...
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Implementation of an automated system for optimal pump control - Case Study
To support their integrated water supply grid, which was designed and developed to improve resilience and security of supply in their region, Wessex Water recognised the need for a sophisticated control system. The Servelec Technologies pump optimisation system OptiMISER was identified as the best tool for this function and has been in use in the Control Room since September 2014. Since then it ...
By Ovarro
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2023 Watershed Monitoring Trends
Amongst political unrest, COVID-19, and the continued threat of climate change, 2023 is shaping up to be yet another unprecedented year. As we look to the horizon, one thing is guaranteed, there will be no shortage of challenges to overcome in the environmental monitoring industry. To gain better insight into the evolving landscape, we combined global data and market research to synthesize ...
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Water Network Boundaries and Data Mining
In the book ‘Thinking in Systems’, Donella Meadows describes the importance of defining a system’s boundary in order to answer key questions. In centralised water systems, defining boundaries can be achieved using the location of flow meters. In broad terms data locations are referred to as: Source –the dam, river or treatment plant Network –pump stations, pipes ...
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Design methodology for background air pollution monitoring site selection in an urban area
We present an air monitoring site selection procedure to determine the minimum number and location of monitoring stations to identify the occurrence of background concentrations greater than a reference value in an urban area. The objective technique reported here is based on the analysis of concentrations estimated using an urban dispersion model for at least one year of hourly information. As ...
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Tackling Water Infrastructure Challenges by Moving Towards Smart Water Networks
It might surprise you to hear, but there is one particular reason I’m grateful for limited travel this year. The move from in-person to virtual events afforded an opportunity to attend the SWAN 10th Annual Conference. This was my first experience participating in the well-known congress and it did not disappoint. I found many presentations that have enriched my work as a researcher in the ...
By SWAN Forum
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