scholarly journals Determining the best strategy to reduce losses in Banias water network, based on the Analytical Hierarchy Process AHP: تحديد الاستراتيجية الأفضل لتخفيف الفواقد في شبكة مياه مدينة بانياس بالاعتماد على طريقة التحليل الهرمي Analytical Hierarchy Process (AHP)

2021 ◽  
Vol 5 (5) ◽  
pp. 91-78
Author(s):  
Jamelah Mouhammad Salman, Abbas Abdulrahman Jamelah Mouhammad Salman, Abbas Abdulrahman
Keyword(s):  
Analytical Hierarchy Process ◽  
Water Distribution ◽  
Water Distribution Network ◽  
Final Decision ◽  
Water Network ◽  
Decision Matrix ◽  
Water Losses ◽  
Expert Choice ◽  
City Water ◽  
Hierarchy Process

The study aims to choose the best strategy for reducing Water losses in Banias City Water Distribution network, that reaches a large percentage about 65%, based on the Analytical Hierarchy Process (AHP). The strategies (alternatives), the main and secondary criteria necessary to reach the construction of the decision matrix and the development of the final strategies for the work of the Establishment in accordance with it, based on the opinions of experts in the Banias Water Establishment, in addition to references and previous studies in the field of research. The necessary questionnaire was prepared and then distributed to a group of experts (30 experts) of engineers and technicians working in Banias Water Establishment, and thus conducting comparison process between the main criteria, the sub- criteria, and the alternatives for the sub- criteria. The Expert Choice Software Which is based on AHP method, is used, and It automatically performs mathematical processes and calculates final relative weights to obtain the final decision matrix. The results showed that the strategy of dividing the network into district metered areas ranked first, with the highest rating of 27.8%, followed by the strategy of control and pressure management with 13.6%, while the strategy of replacing meters came last with 3.5%.

scholarly journals Energy and Cost Savings through Pumping Stations Rehabilitation. Case Study in Bucharest

Proceedings ◽  
2018 ◽  
Vol 2 (11) ◽  
pp. 593
Author(s):  
Sorin Perju ◽  
Alexandru Aldea
Keyword(s):  
Water Distribution ◽  
Energy Savings ◽  
Distribution Network ◽  
Cost Savings ◽  
Water Distribution Network ◽  
Water Network ◽  
Water Losses ◽  
Pumping Stations ◽  
Technical Solutions

This paper presents the results recorded by upgrading and rehabilitating the pumping stations for an urban water network with a primary goal of diminishing the operation and maintenance costs and a secondary goal of reducing the water losses in the water distribution network. The adopted technical solutions within the structural and functional modifications of the pumping stations have led to both the improvement of hydraulic parameters of the pumping stations and also the improvement of registered energy consumption. The undertaken modifications and transformations within the pumping stations led to significant energy savings and at the same time to important water losses reductions within the distribution network.

scholarly journals Pressure Management of Water Distribution Networks Based on Minimum Ground Elevation Difference of DMAs

2020 ◽  
Vol 2 (1) ◽  
pp. 47
Author(s):  
Giovanni Francesco Santonastaso ◽  
Armando Di Nardo ◽  
Michele Di Natale ◽  
Velitchko Tzatchkov
Keyword(s):  
Water Distribution ◽  
Water Distribution Network ◽  
Distribution Networks ◽  
Water Distribution Networks ◽  
Network Partitioning ◽  
Pressure Management ◽  
Water Network ◽  
Water Losses ◽  
Flow Meters ◽  
Elevation Difference

Water network partitioning (WNP) represents an efficient strategy to improve management of water distribution networks, reduce water losses and monitor water quality. It consists in physically dividing of a water distribution network (WDN) into districted metered areas (DMAs) through the placement of flow meters and isolation valves on boundary pipes between DMAs. In this paper, a novel methodology for designing DMAs is proposed that provides districts with quite similar node elevations and minimizes the number of boundary pipes in order to simplify pressure management and reduce the number of devices to place into the network.

scholarly journals Water distribution network sectorisation using graph theory and many-objective optimisation

2015 ◽  
Vol 18 (1) ◽  
pp. 77-95 ◽  
Author(s):  
Saeed Hajebi ◽  
Ehsan Roshani ◽  
Nicolás Cardozo ◽  
Stephen Barrett ◽  
Aidan Clarke ◽  
...  
Keyword(s):  
Graph Partitioning ◽  
Water Distribution ◽  
Negative Impact ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Performance Criteria ◽  
Direct Access ◽  
Final Decision ◽  
Network Simulator ◽  
Water Network

The water distribution network (WDN) sectorisation problem is characterised by structural and hydraulic requirements that make existing graph partitioning techniques inadequate to find a good solution. Specifically, sector isolation and direct access to at least one source for each sector are not addressed. This study proposes a method to address structural requirements of water network sectorisation with minimum negative impact on the hydraulic requirements. This paper first elaborates the sectorisation problem and discusses the requirements of water network sectorisation. Then, it proposes a novel method, called WDN-Partition, which applies a new heuristic structural graph partitioning algorithm, combined with a many-objective optimisation procedure, to find near-optimal arrangements of nodes into sectors. The criteria of optimisation and their priorities can be specified for each case. The outcome of the method is a set of non-dominated sectorisation solutions, ranked lexicographically based on their values for the chosen criteria and their priorities, from which the final decision can be made by the domain experts. WDN-Partition has been implemented and integrated with a hydraulic network simulator. The simulation-based evaluation results demonstrate that WDN-Partition generally achieves its design objectives to partition a water network into isolated sectors with a minimal negative impact on the hydraulic performance criteria of the network.

An Advanced Software to Manage a Smart Water Network with Innovative Metrics and Tools Based on Social Network Theory

10.29007/gvnz ◽  
2018 ◽  
Author(s):  
Armando Di Nardo ◽  
Michele Di Natale ◽  
Anna Di Mauro ◽  
Eva Martínez Díaz ◽  
Jose Antonio Blázquez Garcia ◽  
...  
Keyword(s):  
Social Network ◽  
Network Theory ◽  
Water Distribution ◽  
Distribution Networks ◽  
Social Network Theory ◽  
Geographical Information ◽  
Water Network ◽  
Time Data ◽  
Water Losses ◽  
Operational Conditions

The recent development and applications of social network theory in many fields of engineering (electricity, gas, transport, water, etc.) allows both the understanding of networks and to improve their management. Social network theory coupled to the availability of real time data and big data analysis techniques can change drastically the traditional approaches to manage civil networks. Recently, some authors are working to apply this novel approach, based on social network theory, on the water distribution networks using: a) graph partitioning algorithms to define optimal district meter areas both for water losses identification and for water network protection, b) innovative topological, energy and hydraulic indices to analyze performance; and c) GIS (Geographical Information System) to provide a more effective display of results and to improve network behavior in specific operational conditions. In this paper, a novel release 3.5 of SWANP software, that implements all these features, was tested on a real large water network in Alcalá de Henares, Spain.

scholarly journals Water resilience mapping of Chennai, India using analytical hierarchy process

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
R. Kaaviya ◽  
V. Devadas
Keyword(s):  
Climate Change ◽  
Analytical Hierarchy Process ◽  
Tamil Nadu ◽  
Water Resource Management ◽  
Global Climate ◽  
Decision Matrix ◽  
Analysis Technique ◽  
Study Results ◽  
Chennai City ◽  
Hierarchy Process

Abstract Background The urban water system is the worst hit in global climate change. Water resilience is the system’s ability to retaliate and recover from various water-related disruptions. The present study aims to delineate the water resilience zones in Chennai city, Tamil Nadu, India, by effectively integrating the geographic information system, remote sensing, and analytical hierarchy process (AHP). Methods The methodology incorporated 15 vital factors. A multi-criteria decision analysis technique was adopted to assign a weight to each parameter using the AHP. A pairwise decision matrix was constructed, parameter’s relative importance and the consistency ratio were established. Integration of all maps by weighted overlay analysis technique depicted water resilience intensities of five different classes. Results Very low, low and moderate water resilience areas accounted for more than three-fourth of the study area. Area Under Curve score (80.12%) depicted the accuracy of the developed model. Sensitivity analysis determined the significance of the parameters in the delineation. The logical structural approach can be employed in other parts of India or elsewhere with modifications. Conclusion This study is novel in its approach by holistically analyzing water resilience by integrating disruptions related to flood, drought and the city's water infrastructure system's adequacy and efficiency. Researchers and planners can effectively use the study results to ensure resilience as a new perspective on effective water resource management and climate change mitigation. It becomes a decision aid mechanism identifying where the system is vulnerable to potential water-related risks for employing resilience measures.

scholarly journals Sistem Pendukung Keputusan Promosi Jabatan Struktural Dosen Menggunakan AHP (Analytical Hierarchy Process)

Jurnal Teknik ◽  
2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Rahma Farah Nungrum
Keyword(s):  
Analytical Hierarchy Process ◽  
Analytical Techniques ◽  
University Governance ◽  
Ahp Method ◽  
Structural Position ◽  
Expert Choice ◽  
Decision Attributes ◽  
Data Processing Tool ◽  
Hierarchy Process ◽  
Method Approach

Abstrack Good University Governance is needed by all higher education institutions that want to compete in producing good quality colleges. One of them is STT PLN which has a vision of realization of modern universities, independent and superior in the field of energy and electricity. To achieve good management governance, an objective, accountable and transparen,t assessment is required in recommending a lecturer to occupy a structural position. The process of determining attribute criteria, sub criteria and alternatives using the input of expert respondents in the form of questionnaires are processed by using statistical methods Cochran Q Test to obtain the decision attributes used in the study. While the analytical techniques in determining the priority weight of the alternative that will be done, using Analytical Hierarchy Process (AHP) method approach with data processing tool using Expert Choice software. Keywords : Good University Governance, Lecturers, structural positions, Cochran Q Test, Analytical Hierarchy Process (AHP)

scholarly journals Application of Analytical Hierarchy Process for Structural Health Monitoring and Prioritizing Concrete Bridges in Iran

2021 ◽  
Vol 11 (17) ◽  
pp. 8060
Author(s):  
Saeid Darban ◽  
Hosein Ghasemzadeh Tehrani ◽  
Nader Karballaeezadeh ◽  
Amir Mosavi
Keyword(s):  
Case Studies ◽  
Health Monitoring ◽  
Analytical Hierarchy Process ◽  
Condition Index ◽  
Concrete Bridges ◽  
Successful Implementation ◽  
Structural Health ◽  
Expert Choice ◽  
Hierarchy Process ◽  
Load Impact

This paper proposes a method for monitoring the structural health of concrete bridges in Iran. In this method, the bridge condition index (BCI) of bridges is determined by the analytical hierarchy process (AHP). BCI constitutes eight indices that are scored based on the experts’ views, including structural, hydrology and climate, safety, load impact, geotechnical and seismicity, strategic importance, facilities, and traffic and pavement. Experts’ views were analyzed by Expert Choice software, and the relative importance (weight) of all eight indices were determined using AHP. Moreover, the scores of indices for various conditions were extracted from experts’ standpoints. BCI defines as the sum of weighted scores of indices. Bridge inspectors can examine the bridge, determine the scores of indices, and compute BCI. Higher values of BCI indicate better conditions. Therefore, bridges with lower BCI take priority in maintenance activities. As the case studies, the authors selected five bridges in Iran. Successful implementation of the proposed method for these case studies verified that this method can be applied as an easy-to-use optimization tool in health monitoring and prioritizing programs.

scholarly journals A New Vulnerability Measure for Water Distribution Network

Water ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 1005 ◽  
Author(s):  
Mario Maiolo ◽  
Daniela Pantusa ◽  
Manuela Carini ◽  
Gilda Capano ◽  
Francesco Chiaravalloti ◽  
...  
Keyword(s):  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Structural Elements ◽  
Performance Indices ◽  
Water Network ◽  
Topological Approach ◽  
Vulnerability Measure ◽  
Failure Conditions ◽  
Service Standards

The main objective of a water distribution network is to provide water to users in compliance with quality and service standards under different conditions. The ability to meet the water demand at the nodes, under the required pressures head, depends on many characteristic factors of the water network, such as various infrastructural components. A water distribution network is a complex system consisting of numerous structural elements and dependent by several factors. Resilience, robustness and vulnerability are of great interest, for these systems, in relation to the possible failure conditions which may compromise the network’s ability to fulfill the project conditions. Vulnerability measures how much the network is fragile: a higher value of vulnerability means that the network is prone to fail in achieving the project conditions. In the present work, a new vulnerability measure based on a topological approach is proposed. A first application of the proposed vulnerability measure on two water networks known in the literature is described, and the obtained results are compared with other performance indices showing a significant correlation.

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