| dc.creator |
Kadengea, Maselle Joseph |
|
| dc.creator |
Mkandawile, Mashaka |
|
| dc.creator |
Masanja, Verdiana Grace |
|
| dc.date |
2020-06-11T08:37:21Z |
|
| dc.date |
2020-06-11T08:37:21Z |
|
| dc.date |
2019-11 |
|
| dc.date.accessioned |
2022-10-25T09:15:49Z |
|
| dc.date.available |
2022-10-25T09:15:49Z |
|
| dc.identifier |
https://dspace.nm-aist.ac.tz/handle/20.500.12479/783 |
|
| dc.identifier.uri |
http://hdl.handle.net/123456789/94626 |
|
| dc.description |
This research article published by Modern Education and Computer Science Press, 2019 |
|
| dc.description |
Water loss in water distribution systems (WDS) is a serious problem in Tanzania and the third world countries
at large. A lot of water is lost on its way before reaching the consumers. This causes a shortage of water supply
which leads to loss of revenues of the concerned water authorities. The control or reduction of water loss in the
WDS is closely dependent on the commitment of the decision-makers and on the strategies and budget, they set
for that purpose. This paper presents a combined model of Multi-Criteria Decision Making (MCDM) and
Numerical optimization techniques which may help decision-makers to prioritize and select the best strategies
to be used in the management of water loss in the WDS at Moshi Urban Water Supply and Sanitation Authority
(MUWSA), Tanzania. The Multi-Criteria Decision Making family methods namely the Multi-Attribute Value
Theory (MAVT), Simple Multi-Attribute Rating Technique Exploiting Ranks (SMARTER), and Complex
Proportional Assessment (COPRAS) were used to evaluate and prioritize the strategies, whereas the Integer
Linear Programming (ILP) technique a numerical optimization technique was used to select the best strategies
or alternatives to be employed in water loss management. The results show that the most preferable alternative
is replacement of dilapidated pipes while the least preferable alternative is network zoning. The model selects
thirteen out of sixteen alternatives, which cost 97% (TZS 235.71 million) of the total budgets set by the water
authority to form a portfolio of the best alternatives for water loss management. Furthermore, the model showed
robustness as the selected portfolio of alternatives remained the same even when the weights of the evaluation
criteria changed. |
|
| dc.format |
application/pdf |
|
| dc.language |
en |
|
| dc.publisher |
Modern education and computer science press |
|
| dc.subject |
Multi-Attribute Value Theory |
|
| dc.subject |
Integer Linear Programming |
|
| dc.title |
Multi-Criteria Decision Making and Numerical Optimization Approaches for Optimizing Water Loss Management Strategies in Water Distribution System A case of Urban Water Supply and Sanitation Authorities in Tanzania |
|
| dc.type |
Article |
|