A Multipurpose Optimization Model for Area-Wide Sewerage Systems

1989 ◽  
Vol 21 (8) ◽  
pp. 1015-1026
Author(s):  
A Koizumi ◽  
T Inakazu
Keyword(s):  
Environmental Impact ◽  
User Satisfaction ◽  
Programming Model ◽  
Objective Functions ◽  
Total Cost ◽  
Good Balance ◽  
Sewerage System ◽  
Pumping Stations ◽  
Goal Programming Model

In this paper the goal programming model is given that deals with the optimal scale and location of an area-wide sewerage system, consisting of trunk sewers, treatment plants, and pumping stations. The uncertainty of future wastewater volume is considered, and the regional objectives are evaluated. Hence, the model is composed of several constraints and of three objective functions (goals). The major constraints are the capacity of the treatment plants and the estimated range of wastewater amount in each municipality. The goals are to minimize total cost and environmental impact, while maximizing user satisfaction with the sewerage system. The case study shows that this model can help to decide the location and scale of facilities for sewerage system, giving results that are a good balance of the three goals. Furthermore, the analysis, by varying the settings of the goals or the values of sewerage propagation ratio, shows that the model can simulate changes in the wastewater capacity and its transport routes. Thus our model makes it easier for decisionmakers to plan area-wide sewerage systems.

scholarly journals A new model for logistic and transportation of fashion goods in the presence of stochastic market demands considering restricted retailers capacity

2019 ◽  
Author(s):  
Aidin Delgoshaei ◽  
Hengameh Norozi ◽  
Abolfazl Mirzazadeh ◽  
Maryam Farhadi ◽  
Golnaz Hooshmand Pakdel ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Case Studies ◽  
Programming Model ◽  
Real Data ◽  
Objective Functions ◽  
Mathematical Programming Model ◽  
Multi Objective ◽  
Scheduling Method ◽  
Stochastic Market

In today’s world, using fashion goods is a vital of human. In this research, we focused on developing a scheduling method for distributing and selling fashion goods in a multi-market/multi-retailer supply chain while the product demands in markets are stochastic. For this purpose, a new multi-objective mathematical programming model is developed where maximizing the profit of selling fashion goods and minimizing delivering time and customer’s dissatisfaction are considered as objective functions. In continue due to the complexity of the problem, a number of metaheuristics are compared and a hybrid of Non-dominated Sorting Genetic Algorithm II (NSGAII) and simulated annealing is selected for solving the case studies. Then, in order to find the best values for input parameters of the algorithm, a Taguchi method is applied. In continue, a number of case studies are selected from literature review and solved by the algorithm. The outcomes are analyzed and it is found that using multi-objective models can find more realistic solutions. Then, the model is applied for a case study with real data from industry and outcomes showed that the proposed algorithm can be successfully applied in practice.

Evaluation of methods for reducing the total cost in rural water pumping stations in Iran: a case study

2016 ◽  
Vol 65 (3) ◽  
pp. 277-293 ◽  
Author(s):  
Saeid Mohammadzade Negharchi ◽  
Rouzbeh Shafaghat ◽  
Ahmadreza Najafi ◽  
Delavar Babazade
Keyword(s):  
Total Cost ◽  
Water Pumping ◽  
Pumping Stations ◽  
Rural Water ◽  
Evaluation Of Methods

scholarly journals DETERMINATION OF 120MM / 46A PREVENTIVE CARE INTERVALS FOR MINVET BOATS FOR INCREASING THE RELIABILITY OF THE SYSTEM

JOURNAL ASRO ◽  
2018 ◽  
Vol 9 (2) ◽  
pp. 11
Author(s):  
Sutrisno Sutrisno ◽  
Arief Saepullah ◽  
Setiawan Bernadi ◽  
Djoko Kriswanto
Keyword(s):  
Service Life ◽  
Preventive Care ◽  
Reliability Index ◽  
Objective Functions ◽  
Damage Distribution ◽  
Maintenance Costs ◽  
Total Cost ◽  
Optimal Maintenance

Most warships, especially corvette types, have a service life of more than twenty years. Intuitively it can be concluded that the components and equipment that have been installed are in the period of wear from the bathtub curve. This paper presents an alternative method in determining the optimum component maintenance intervals for weapons system equipment on ships that have entered wear (wear out). Optimum maintenance costs are determined by optimizing the component maintenance interval with objective functions to minimize the total cost of increasing reliability. The reliability of the system is achieved by increasing the reliability index of its constituent components. Weibull ++ is used to obtain parameters that are appropriate for each damage distribution, while Excel Solvers are used to calculating optimal maintenance intervals. In this writing, a case study will be carried out on the components of Bofors cannon laying gear TAK 120MM / 46A

scholarly journals Application of goal programming model for allocating time and cost in project management: A case study from the company of construction SEROR

2015 ◽  
Vol 25 (2) ◽  
pp. 283-289 ◽  
Author(s):  
Abdelkrim Yahia-Berrouiguet ◽  
Khadija Tissourassi
Keyword(s):  
Project Management ◽  
Goal Programming ◽  
Programming Model ◽  
Management Problem ◽  
Goal Programming Model

The objective of this paper is to apply one of the techniques of multipleobjective programming (goal programming) in a project management problem. Mubiru (2010) proposed a goal programming model for allocating time and cost in project management. In order to test this model, a case study was accomplished in the company of construction SEROR, Algeria.

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