scholarly journals Design of Pumping Stations Using a Multicriteria Analysis and the Application of the AHP Method

2021 ◽  
Vol 13 (11) ◽  
pp. 5876
Author(s):  
Diana S. Sánchez-Ferrer ◽  
Christian X. Briceño-León ◽  
Pedro L. Iglesias-Rey ◽  
F. Javier Martínez-Solano ◽  
Vicente S. Fuertes-Miquel
Keyword(s):  
Optimal Solution ◽  
Multicriteria Analysis ◽  
Suitable Model ◽  
Analytic Hierarchy ◽  
Pumping Station ◽  
Traditional Design ◽  
Pumping Stations ◽  
Water Head ◽  
Technical Factors ◽  
Hierarchy Process

The pumping station is a very important hydraulic system in urban water supplies because the pumps raise the water head, ensuring the minimum pressure required in drinking water systems. In the design of a pumping station, one of the most important criteria is the number of pumps. However, in the traditional design, this criterion is defined arbitrarily. The other criteria are defined from the number of pumps and can produce a design that is not optimal. In addition, the traditional design does not consider the importance of the environment in choosing the pumps. The objective of this paper is to define a new design methodology for pumping stations. It has been developed using a multicriteria analysis in which nine criteria are evaluated. The application of the analytic hierarchy process (AHP) allows for finding an optimal solution. These design criteria have been associated in three cluster factors: technical factors; environmental factors; and economic factors. The results obtained allow us not only to validate the methodology but also to offer a solution to the problem of determining the most suitable model and the number of pumps for a pumping station.

scholarly journals Ergonomic approach to workplace (re)design during loads handling

2021 ◽  
Vol 11 (1) ◽  
pp. 7-13
Author(s):  
Lutvo Haznadarević ◽  
Novak Milošević ◽  
Dragana Gardašević ◽  
Nebojša Ćurčić ◽  
Evica Stojiljković
Keyword(s):  
Health And Safety ◽  
Optimal Solution ◽  
Multicriteria Analysis ◽  
Physical Strain ◽  
Analytic Hierarchy ◽  
Minimal Impact ◽  
Single Person ◽  
Manual Handling ◽  
Analytic Hierarchy Process Method ◽  
Hierarchy Process

Manual handling of loads is a set of activities that involve physical strain during work. For this reason, it is necessary to create ergonomically sound workplaces, which will help improve health and safety in the workplace. The paper describes an approach, which includes ergonomic and productivity factors, for choosing the optimal alternative for loads handling using multicriteria analysis. The purpose of this approach is to select the most important criteria to make decisions on how to reorganize the work process, as well as to meet ergonomic performance goals, all with minimal impact on the company's productivity. The objective of this paper is to analyse and select the optimal alternative for manual handling of loads using the Analytic Hierarchy Process method. The results of the research revealed that handling loads is a more optimal solution when performed by a single person, taking into account ergonomics and productivity aspects, compared to working in pairs or using conveying systems as transport AIDS.

Διερεύνηση καινοτόμων προτύπων χρηματοδότησης συγκοινωνιακών έργων

2016 ◽  
Author(s):  
Αναστασία Ρουκούνη
Keyword(s):  
Analytic Hierarchy Process ◽  
Multicriteria Analysis ◽  
Analytic Hierarchy ◽  
Value Capture ◽  
Ex Ante ◽  
Hierarchy Process

Οι συγκοινωνιακές υποδομές αποτελούν ζωτικό τμήμα μιας πόλης, καθώς χαρακτηρίζουν τον αστικό χώρο και καθορίζουν την κινητικότητα. Επηρεάζουν τις ροές διακίνησης ανθρώπων και αγαθών και τις χρήσεις γης και η κατασκευή και συντήρησή τους απαιτεί διάθεση πολύ υψηλών χρηματικών πόρων. Όσο οι δημόσιοι πόροι συρρικνώνονται και γίνονται ολοένα και λιγότερο διαθέσιμοι, δημιουργείται χάσμα μεταξύ των απαιτήσεων του αστικού συστήματος μεταφορών και των υφιστάμενων χρηματοδοτικών μέσων. Καθώς αναζητούνται εναλλακτικές και καινοτόμες λύσεις για αυτή τη χρηματοδοτική πρόκληση, ένα σύνολο επιλογών εμφανίζεται υπό τον όρο – ομπρέλα “Value Capture”. Πρόκειται για μία ομάδα χρηματοδοτικών μηχανισμών οι οποίοι αντλούν έσοδα κατ’ αναλογία με την αύξηση στην αξία γης που σχετίζεται με νέες ή βελτιωμένες υποδομές. Στην περίπτωση των συγκοινωνιακών έργων, η αύξηση αυτή προκαλείται από τη βελτίωση της προσβασιμότητας (accessibility). Η χρηματοδότηση μέσω μηχανισμών Value Capture (Value Capture Finance – VCF) θεωρείται μία πολλά υποσχόμενη πηγή εσόδων και χρησιμοποιείται ή έχει χρησιμοποιηθεί σε μερικά από τα πιο φιλόδοξα συγκοινωνιακά έργα μεγάλης κλίμακας παγκοσμίως. Παρότι οι αποφάσεις που σχετίζονται με τη χρηματοδότηση μέσω Value Capture είναι ένα ζήτημα στο οποίο εμπλέκονται πολλαπλά κριτήρια και διαφορετικές απόψεις/συμφέροντα πολλών φορέων και ατόμων, έως τώρα δεν έχει προσεγγιστεί εμπεριστατωμένα λαμβάνοντας υπόψη όλους αυτούς τους παράγοντες. Αυτό το σημαντικό κενό επιχειρεί να καλύψει η παρούσα Διατριβή. Κεντρικό στόχο της Διατριβής αποτελεί συνεπώς η ανάπτυξη ενός πλαισίου για την ex-ante αξιολόγηση καινοτόμων χρηματοδοτικών προτύπων συγκοινωνιακών έργων και υποδομών, με δύο βασικούς άξονες: την ανάδειξη του ρόλου των εμπλεκόμενων φορέων και του ρόλου των πολιτών. Από την ιδιαίτερα μεγάλη ποικιλία μεθόδων που θα μπορούσαν να χρησιμοποιηθούν, καταλληλότερη κρίθηκε η Multi – Actor Multicriteria Analysis (MAMCA).Το βασικό χαρακτηριστικό της είναι ότι λαμβάνει υπόψη αναλυτικά τους εμπλεκόμενους φορείς σε όλη τη διαδικασία της ανάλυσης και τα κριτήρια της αξιολόγησης διαφοροποιούνται ανά ομάδα. H αποδοχή και στήριξη των πολιτών, εξετάζεται μέσω του σχεδιασμού ερωτηματολογίων δύο τύπων, εκ των οποίων το ένα απευθύνεται σε μετακινούμενους και το άλλο σε επιχειρήσεις, και τη διεξαγωγή έρευνας δηλωμένων προτιμήσεων. Ως μελέτη περίπτωσης εξετάζεται το υπό κατασκευή σύστημα του Μετρό της Θεσσαλονίκης. Η αξιολόγηση των εναλλακτικών σεναρίων γίνεται με συνδυασμό των μεθόδων AHP (Analytic Hierarchy Process) και PROMETHEE – GDSS στο πλαίσιο της MAMCA. Η συνθετότητα της προσέγγισης στην επεξεργασία και ανάλυση των δεδομένων αποτελεί ένα από τα στοιχεία πρωτοτυπίας της Διατριβής. Εκτός από τη MAMCA, χρησιμοποιούνται συνδυαστικά μέθοδοι μοντελοποίησης (Μοντέλο Λογιστικής Παλινδρόμησης) και μη παραμετρικές μέθοδοι πολυδιάστατης ανάλυσης (Παραγοντική Ανάλυση των Αντιστοιχιών και Ανοδική Ιεραρχική Ταξινόμηση). Σημαντικό στοιχείο πρωτοτυπίας αποτελεί επίσης η εφαρμογή του προτεινόμενου μεθοδολογικού πλαισίου στην Ελλάδα, καθώς από τη βιβλιογραφική έρευνα προέκυψε ότι αποτελεί την πρώτη ολοκληρωμένη προσπάθεια εμπεριστατωμένης διερεύνησης της δυνατότητας χρησιμοποίησης καινοτόμων και εναλλακτικών προτύπων χρηματοδότησης που στηρίζονται στη λογική του Value Capture στη χώρα. Η ακολουθούμενη μεθοδολογία αλλά και τα αποτελέσματα της έρευνας της Διατριβής έρχονται να συμβάλλουν στη συμπλήρωση της διεθνούς βιβλιογραφίας και ιδανικά, η παρούσα Διατριβή θα μπορούσε να συνεισφέρει στην καθιέρωση μίας νέας, εναλλακτικής, καινοτόμου, προοπτικής στον τομέα της χρηματοδότησης των αστικών μεταφορών στην Ελλάδα.

The use of an analytic hierarchy process to evaluate the flexibility and adaptability in architecture

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sabine De Paris ◽  
Carlos Nuno Lacerda Lopes ◽  
Alvaro Neuenfeldt Junior
Keyword(s):  
Multicriteria Analysis ◽  
Practical Case ◽  
Cultural Issues ◽  
Analytic Hierarchy ◽  
Content Type ◽  
Scientific Analysis ◽  
Criteria Importance ◽  
Hierarchy Process ◽  
Complex Subject

PurposeInvestigation of housing adaptability is related to understanding factors that influence project transformation. Factors may be associated with the design and project stage as also alternative uses to existing buildings. To structure methodology for criteria analysis of adaptability, the research aims to verify the importance level of factors related to adaptability and flexibility context in architecture.Design/methodology/approachEmploying a multicriteria analysis and a diagnosis performed with architecture professionals, criteria importance identified in a bibliographic survey is contacted.FindingsWith harmonious results, key elements highlighted in the diagnosis are discussed. Adaptability and flexibility are mainly related to balance in the design of spaces and their connections, so the user can have control administrating the organization of their habitat.Originality/valueAs a complex subject, involving legal, social and cultural issues, the multicriteria method supports the scientific analysis of data. The results can be used in a practical case study as assessment of housing adaptability and flexibility, as a useful tool to decision support in architectural project.

Modeling and Simulation of Partnership Network for ?an Intelligent Supply Chain

2011 ◽  
pp. 202-225
Author(s):  
Fouzia Ounnar ◽  
Patrick Pujo ◽  
Selma Limam Mansar
Keyword(s):  
Distributed Simulation ◽  
Evaluation Criteria ◽  
Multicriteria Analysis ◽  
High Level Architecture ◽  
Analytic Hierarchy ◽  
Logistics Networks ◽  
Best Response ◽  
Partnership Network ◽  
High Level ◽  
Hierarchy Process

Contrary to actual logistics networks in which chains are frozen, in the proposed partnership network, a dynamic chain is only built each time an order is requested; nothing is planned ahead of time. An isoarchic control model based on the holonic paradigm is proposed. The control of the partnership network can be seen through a simultaneous analysis of the holon views. The proposed control is based on a multicriteria analysis method by complete aggregation (Analytic Hierarchy Process (AHP)). The assignment of orders is based on the search for the best response to a Call For Proposals submitted by a customer. The solution that appears to be the most efficient in terms of the evaluation criteria will be adopted. For validation purposes, a simulation of the proposed approach was implemented using a distributed simulation environment HLA (High Level Architecture). A set of realistic tests were used to evaluate the proposed approach.

scholarly journals A GIS-Based Multicriteria Analysis in Modeling Optimum Sites for Rainwater Harvesting

Hydrology ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 51 ◽  
Author(s):  
Khamis Sayl ◽  
Ammar Adham ◽  
Coen J. Ritsema
Keyword(s):  
Decision Problem ◽  
Rainwater Harvesting ◽  
Rank Order ◽  
Fuzzy Ahp ◽  
Multicriteria Analysis ◽  
Cost Benefit ◽  
Analytic Hierarchy ◽  
Systematic Methodology ◽  
Hierarchy Process ◽  
Different Levels

In order to select suitable rainwater harvesting sites within the study area, rainwater harvesting criteria needed to be determined, defined, and structured. Several criteria played an important role in selecting the most suitable rainwater harvesting sites. A multicriteria analysis (MCA) approach, which is widely used to classify potential rainwater harvesting sites, was chosen to help select potential sites in the Wadi Horan region of Iraq. An MCA approach offered a systematic methodology focused on mathematics as well as professional expertise to organize and evaluate complex decisions. Unfortunately, there is no method for choosing among them the most appropriate for a given decision problem, as the choice remains a subjective task. This study used a geographic information system (GIS)-based approach with remote sensing to identify the optimal sites for rainwater harvesting. Four indices: evaporation, cost–benefit, sediment, and hydrology were selected in order to compare the potential sites. The analytic hierarchy process (AHP), fuzzy AHP, and rank order method (ROM) were used to assign weight to the study criteria. The results were then compared using a statistical (variance inverse (VI)) method. A sensitivity analysis was done to test the uncertainties and robustness of the results for each method. The results showed that the ROM and VI methods affected the ranking priority and considered all of the criteria that were sensitive to impact in the ranking process at the different levels compared to the methods of AHP and fuzzy AHP.

scholarly journals Applying the Analytical Hierarchy Process (AHP) into the effects assessment of river training works

2017 ◽  
Vol 35 (1) ◽  
pp. 63-72 ◽  
Author(s):  
Justyna Hachoł ◽  
Mateusz Hämmerling ◽  
Elżbieta Bondar-Nowakowska
Keyword(s):  
Decision Making ◽  
Sustainable Development ◽  
Optimal Solution ◽  
River Regulation ◽  
Analytic Hierarchy ◽  
The Sustainable Development ◽  
River Bed ◽  
River Training ◽  
The One ◽  
Hierarchy Process

AbstractThe aim of the following study was to compare a few methods of river regulations and indicate the one which fully meets technical regulative standard and concurrently ensures protection of the watercourse ecosystem. According to the sustainable development rules it is of the most importance in every human activity to compromise between developmental and environmental needs of current and future generations. Therefore, both technical criteria related to flood safety and environmental ones were taken into consideration in the analysis. Field study was conducted in vegetation stage between 2008 and 2014 in small and medium lowland watercourses in Lower Silesia. The research comprised of measurements and descriptions of selected technical and environmental elements of a complex system of the watercourse river bed. Basing on obtained results a multicriterial assessment of the effects of the works was conducted. In order to assess the results an Analytic Hierarchy Process (AHP) was used in the study. It facilitated the creation of linear ranking of river beds and indicate the most optimal solution in terms of sustainable development. Such methods have not been applied in solving problems connected with river regulation. That’s why this study aims also at checking the utility of this method in decision making in both planning and regulation works realization. Results of the study indicate high usefulness of AHP method in the decision-making process.

Structure Optimization Design for the Bed of Gear Hobbing Machine

2013 ◽  
Vol 765-767 ◽  
pp. 176-180
Author(s):  
Rong Chuang Zhang ◽  
Ao Xiang Liu ◽  
Jun Wang ◽  
Wan Shan Wang
Keyword(s):  
Optimization Design ◽  
Optimal Solution ◽  
Element Model ◽  
Weighting Coefficient ◽  
Design Parameters ◽  
Analytic Hierarchy ◽  
Design Variables ◽  
Gear Hobbing ◽  
Vibration Modal ◽  
Hierarchy Process

In the optimization design of the gear hobbing machine bed, the finite element model is build and the static analysis and vibration modal analysis are performed. Then sensitivity analysis is used to gain the main design parameters which influence the bed property most. Furthermore, the multi-objective optimization design of the bed is performed in ANSYS Workbench with these design parameters as the design variables. At last, after all optimum proposals are showed up, Analytic Hierarchy Process is used to determine the weighting coefficient, and the most optimal solution is found out. As a result, the dynamic and static performances of the machine bed are improved under control of the machine bed mass.

scholarly journals An approach for choosing the optimal route and type of transport for freight carriage using Compromise programming

2018 ◽  
Vol 234 ◽  
pp. 06002 ◽  
Author(s):  
Svetla Stoilova
Keyword(s):  
Environmental Protection ◽  
Optimal Solution ◽  
Entropy Method ◽  
Compromise Programming ◽  
Optimal Route ◽  
Analytic Hierarchy ◽  
Expert Assessments ◽  
Hierarchy Process ◽  
Economic Criteria

This study elaborates a methodology for choosing a transport strategy based on the selection of the optimal route and type of transport. The research examines carriage by containers and includes two ways of transportation: by container block trains and by trucks. The methodology consists of three steps. The first step defines the determination of alternatives routes and criteria for assessment. Eight criteria have been studied: environmental protection; economic criteria; additional transportation fare; the duration of transportation; transhipment operations; security; reliability; stability. In the second step three approaches have been used and compared to determine the weights of the criteria: the Shannon entropy method, which is based on information from data, expert assessments by means of the Analytic hierarchy process (AHP) method and the Decision Making Trial and Evaluation Laboratory (DEMATEL) method. The third step determines the optimal solution based on the Compromise programming method. The methodology is approbated for routes from the railway and road network of Bulgaria. The results show that the criteria with the greatest impact are: the economic criteria; the duration of transportation and environmental protection. It was found out that the technologies that include rail transport are the best variant of transportation. The presented methodology could be used for choosing transportation for other destinations in the transport network.

scholarly journals An artificial intelligence approach for optimizing pumping in sewer systems

2011 ◽  
Vol 13 (3) ◽  
pp. 295-306 ◽  
Author(s):  
S. Ostojin ◽  
S. R. Mounce ◽  
J. B. Boxall
Keyword(s):  
Optimal Solution ◽  
Cost Savings ◽  
Real Data ◽  
Base Case ◽  
Energy Costs ◽  
Pumping Station ◽  
Sewer Systems ◽  
Pumping Stations ◽  
Potential Benefits ◽  
The University

This paper presents details of a fuzzy logic system developed for the control of sewer pumping stations for energy costs savings. This is part of an ongoing collaborative project between Anglian Water and the University of Sheffield. The model rules and operation are developed for one representative pumping station in order to enable the identification of potential benefits and inhibitors to Anglian Water. Results are included that demonstrate the potential for energy cost-savings by application to a single pumping station for dry weather flow conditions and through comparison to current on/off switching rules. The fuzzy system is shown to be robust to changes in flow pattern (using both modelled inflow data and real data from a flow survey), but sensitive to changes in price structures. Application of a genetic algorithm (GA) search technique was used to adjust the parameters that define the membership functions in the fuzzy rules, in order to provide automated minimization of the energy costs towards an optimal solution. The GA system is shown to be transferable to another pumping station with different pump sizes, wet well capacity and inflow pattern. The GA solution outperformed the base case in terms of energy costs and switching totals.

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