scholarly journals Analysis of Critical Barriers in Bridge Construction using Fuzzy AHP methodology

2021 ◽  
pp. 415-423
Author(s):  
Hemant K Upadhyay ◽  
Rahul Kumar Raj
Keyword(s):  
Fuzzy Ahp ◽  
Research Work ◽  
Review Of Literature ◽  
Bridge Site ◽  
Successful Completion ◽  
Bridge Construction ◽  
Ahp Method ◽  
The Road ◽  
Hierarchy Process ◽  
Pair Wise Comparison

A Bridge is a structure that spans horizontally the road, body of water or a valley. Bridge Construction may vary depending on the intended functioning of the bridge and nature of the that geographical region. Keeping in view the bridge site and various constraints, type of bridge and method of construction are to be selected carefully for successful completion of bridge construction. However, It has been realized that critical barriers in bridge construction need to be identified and evaluated. The intended purpose of the presented research work is to check the critical barriers in bridge construction. Six critical barriers in bridge construction have been shortlisted by carrying out extensive review of literature and categorized in to three categories: 'Climate factors', 'Engineering factors', 'Public problem factors' using experts’ inputs. Fuzzy Analytical Hierarchy Process (F-AHP) method is chosen to rank of critical barriers in bridge construction. All pair wise comparison matrices are fabricated on the basis of a survey with inputs from thirty civil engineers. The outcomes may be instrumental for the planning creators for designing influential strategies to deal with critical barriers in bridge construction.

scholarly journals Risk Identification and Assessment in PPP Infrastructure Projects using Fuzzy Analytical Hierarchy Process and Life-Cycle Methodology

2012 ◽  
Vol 8 (1) ◽  
pp. 34-48 ◽  
Author(s):  
Jie Li ◽  
Patrick Zou
Keyword(s):  
Life Cycle ◽  
Fuzzy Ahp ◽  
Risk Identification ◽  
Infrastructure Projects ◽  
Fuzzy Analytical Hierarchy Process ◽  
Ahp Method ◽  
The Public ◽  
Project Life Cycle ◽  
Project Life ◽  
Hierarchy Process

To fulfil the increasing demands of the public,Public Private Partnership (PPP) has beenincreasingly used to procure infrastructureprojects, such as motor ways, bridges, tunnelsand railways. However, the risks involved inPPP projects are unique and dynamic due tolarge amount of investment and longconcession period. This paper aims to developa risk identification framework from theperspectives of project life cycle, and anassessment framework for risks associatedwith PPP project using fuzzy analyticalhierarchy process (AHP). First the paperreviews the current literature to identifycommon risks in PPP infrastructure projectsand classification methods used. The risksidentified from the literature were classifiedusing project life cycle perspectives. Followingthat, the paper presents the advantages offuzzy AHP. Furthermore, the paper provides aframework for assessment of risks in PPPprojects followed by an illustrative examplewhere the data was obtained from surveyquestionnaires. The paper concludes that risksassociated in PPP infrastructure projects areunique and therefore it is beneficial to classifythem from project life cycle perspectives, andthe proposed fuzzy AHP method is suitable forthe assessment of these risks.

scholarly journals A Multi-Criteria Decision Support System in the Analysis of Flood Risk and Vulnerability Mapping in Suleja, Niger State, Nigeria

2019 ◽  
Vol 2 ◽  
pp. 1-7 ◽  
Author(s):  
Nura Khaliel Umar ◽  
Halima Sadiya Abdullahi ◽  
Ado Kibon Usman
Keyword(s):  
Flood Risk ◽  
Hazard Map ◽  
Ahp Method ◽  
Rainfall Distribution ◽  
Weighted Overlay ◽  
Causative Factors ◽  
Priority Weights ◽  
Vulnerability Map ◽  
Hierarchy Process ◽  
Pair Wise Comparison

<p><strong>Abstract.</strong> This study aims at assessing flood risk factors and mapping areas vulnerable to flood in Suleja of Niger State, Nigeria, using Geo-spatial techniques. The method follows a multi-parametric approach and integrates some of the flood causative factors as: rainfall distribution, elevation and slope, drainage network and density, landuse/ land-cover and soil type. The Spatial Multi-Criteria Analysis (MCA) was used to rank and display potential locations, while the Analytical Hierarchy Process (AHP) method was employed using pair-wise comparison to compute the priority weights of each factor. The various layers were integrated in weighted overlay tool in ArcGIS to generate the final vulnerability map (high, moderate and low). The normalized criterion weights were obtained for each factor, and the results shows that, rainfall (34) and slope (31) have the highest influence on flood in the study area. The Consistency Ratio (CR) with an acceptable level of 0.05 was obtained which further validated the strength of the judgement. The factor weights from the AHP were incorporated to produce a Geo-hazard map and it showed that areas that are high vulnerable to flood in Suleja constitute about 37%, while moderate and low vulnerable areas constitute about 45% and 18% respectively. Elements at high risk of flood are those found at the extreme northeast, where elevation is very low, southwest where rainfall distribution is high and on low lying areas along the depressions. Therefore using the Geo-hazard map as a guide, local councils and other stakeholders can act to prepare for potential floods.</p>

scholarly journals A NOVEL HESITANT INTUITIONISTIC FUZZY LINGUISTIC AHP METHOD AND ITS APPLICATION TO PRIORITIZATION OF INVESTMENT ALTERNATIVES

2019 ◽  
Vol 11 (1) ◽  
pp. 127-142 ◽  
Author(s):  
Ali Karasan
Keyword(s):  
Fuzzy Sets ◽  
Fuzzy Ahp ◽  
Decision Makers ◽  
Membership Degree ◽  
Intuitionistic Fuzzy Number ◽  
Ahp Method ◽  
Intuitionistic Fuzzy ◽  
The Stability ◽  
Fuzzy Linguistic ◽  
Hierarchy Process

Intuitionistic fuzzy extensions are the most used type of fuzzy extensions in the literature since they better represent decision makers strength of commitment on the considered subject in an effective way including membership and non-membership functions. On the other hand, decision makers may assign more than one intuitionistic fuzzy number in order to capture their hesitancies when they are hesitant in assigning a membership degree and a non-membership degree. Hesitant fuzzy sets, another extension of ordinary fuzzy sets, help decision makers to assign different values on the same element aiming at reflexing decision makers’ hesitation. Utilizing these two types of fuzzy sets capture both uncertainty and ambiguity of the considered problem and helps to eliminate the weaknesses of each fuzzy extension. In this study,hesitant intuitionistic fuzzy linguistic sets (HIFLSs) are used to extend the Analytical Hierarchy Process (AHP). The developed method is applied to investment prioritization problem, based on relevant risk factors. Comparative analyses with intuitionistic fuzzy AHP and hesitant fuzzy AHP methods are realized in order to validate the proposed method. A sensitivity analysis is also conducted for the stability of the results of the hesitant intuitionistic fuzzy linguistic AHP method.

An Application of Fuzzy Analytic Hierarchy Process to Overcapacity Absorbing Methods in Container Shipping

2020 ◽  
Vol 162 (A4) ◽  
Author(s):  
B Kamal ◽  
G Kara ◽  
O Okşaş
Keyword(s):  
Selection Criteria ◽  
Fuzzy Ahp ◽  
Supply And Demand ◽  
Sharp Decrease ◽  
Container Shipping ◽  
Ahp Method ◽  
Analytic Hierarchy ◽  
Slow Steaming ◽  
The Times ◽  
Hierarchy Process

The market in container shipping has been characterised as highly cyclical. In a depressed stage of the cycle, with a sharp decrease in demand, the gap between supply and demand widens significantly leading to a deepening overcapacity in the sector. In order to reduce overcapacity in the container shipping sector specific actions have been undertaken by such shipping operators. This paper describes a study which modelled certain selection criteria applied to overcapacity absorbing methods for containership companies. The relative ranking of each criterion was determined through a fuzzy- AHP method. In order to conduct the method, five main and twenty seven sub-criteria were determined. The results of this approach showed that during the times of a collapsed market the most preferred type of overcapacity absorbing method is to lay-up vessels, followed by adopting slow-steaming and thirdly, scrapping. Newbuilding contract cancellation/postponement and service suspension were found to have the least effect.

AN APPLICATION OF FUZZY ANALYTIC HIERARCHY PROCESS TO OVERCAPACITY ABSORBING METHODS IN CONTAINER SHIPPING

2021 ◽  
Vol 162 (A4) ◽  
Author(s):  
B Kamal ◽  
G Kara ◽  
O Okşaş
Keyword(s):  
Selection Criteria ◽  
Fuzzy Ahp ◽  
Supply And Demand ◽  
Sharp Decrease ◽  
Container Shipping ◽  
Ahp Method ◽  
Analytic Hierarchy ◽  
Slow Steaming ◽  
The Times ◽  
Hierarchy Process

The market in container shipping has been characterised as highly cyclical. In a depressed stage of the cycle, with a sharp decrease in demand, the gap between supply and demand widens significantly leading to a deepening overcapacity in the sector. In order to reduce overcapacity in the container shipping sector specific actions have been undertaken by such shipping operators. This paper describes a study which modelled certain selection criteria applied to overcapacity absorbing methods for containership companies. The relative ranking of each criterion was determined through a fuzzy- AHP method. In order to conduct the method, five main and twenty seven sub-criteria were determined. The results of this approach showed that during the times of a collapsed market the most preferred type of overcapacity absorbing method is to lay-up vessels, followed by adopting slow-steaming and thirdly, scrapping. Newbuilding contract cancellation/postponement and service suspension were found to have the least effect.

scholarly journals System model for physical conditions of road components in Magetan district

2018 ◽  
Vol 195 ◽  
pp. 04005
Author(s):  
Ferro Gadha Gilang Kencana ◽  
Ary Setyawan ◽  
Syafi’i
Keyword(s):  
Condition Index ◽  
Assessment Model ◽  
Outer Side ◽  
Ahp Method ◽  
The Road ◽  
Physical Conditions ◽  
Periodic Maintenance ◽  
Road Performance ◽  
National Road ◽  
Hierarchy Process

Road an important component for a region, as well as for Magetan Regency, its position is located at the end of East Java, making the road infrastructure very useful. For this reason, it is necessary to assess the condition of the pavement and the outer side of the pavement and get results. The assessment model of the national road component condition in Magetan district was developed by adopting a condition index system according to the weight and hierarchy of each road component. The weighting of road components using the Analytical Hierarchy Process (AHP) method through questionnaires resulted in the weight of pavement components 0,80 and for the components outside the pavement of 0.20 with the road shoulder sub component having a weight of 0.37; drainage channel / edge 0.33; edge slopes 0.15; sidewalks of 0.09 and 0.06 and pavement values using the PCI method, where the results of road performance when observed from pavement or out of pavement spawn periodic maintenance.

scholarly journals SOFTWARE SELECTION ON BASE OF FUZZY AHP METHOD

2021 ◽  
Author(s):  
Salimov Vagif Hasan Oglu ◽  
Damirova Javida Rizvan Qizi
Keyword(s):  
Test Problem ◽  
Fuzzy Ahp ◽  
Pairwise Comparison ◽  
Practical Implementation ◽  
Software Selection ◽  
Ahp Method ◽  
Analytic Hierarchy ◽  
Original Algorithm ◽  
Application Problem ◽  
Hierarchy Process

The article is devoted to the problem of multi-criteria decision making. As application problem is used the software selection problem. The analysis of existing methods for solving this problem is given. As a method for solving this problem, the most popular fuzzy AHP method (Analytic Hierarchy Process) is proposed. This method use original algorithm for pairwise comparison of criteria and alternatives. The issues of practical implementation of this method are discussed in details. The results of the solution test problem at all stages are presented.

scholarly journals Prioritization of Students Understanding in Rules of Differentiation using Fuzzy Soft Matrices and Lambda – max Method

2021 ◽  
Vol 17 (2) ◽  
pp. 139-145
Author(s):  
Samsiah Abdul Razak ◽  
Aslina Omar ◽  
Ainon Syazana Ab. Hamid ◽  
Izni Syamsina Saari
Keyword(s):  
Failure Rate ◽  
Undergraduate Students ◽  
Fuzzy Ahp ◽  
Chain Rule ◽  
High Failure Rate ◽  
Analytic Hierarchy ◽  
Fields Of Study ◽  
Level Of Understanding ◽  
Hierarchy Process ◽  
Pair Wise Comparison

Calculus is one of the most important courses especially for undergraduate students in many fields of study. Some researchers have identified the causes of the high failure rate which includes lack of basic foundation of mathematics and basic concept of differentiation. Aside from that, the main problems that can be seen among students are the difficulty in identifying the type of function in differentiation and identifying the suitable method to solve a particular problem. There are three rules included in differentiation which are the Chain Rule, Product Rule and Quotient Rule. This study is conducted to examine the level of understanding of the students on the function and the derivative techniques after applying derivative game applications in this course. This paper is based on Fuzzy Analytic Hierarchy Process (Fuzzy AHP) which use fuzzy number in pair-wise comparison matrix. The prioritization of students’ understanding in differentiation rules will then be measured by Fuzzy AHP using Lambda-max method. The highest among the three rules in differentiation will considered as a result. The findings of this study indicated that the highest score with 0.4700 is the Chain Rule. This study can help lectures to know the level or understanding among three rules in differentiation and lecturer well prepared their teaching materials in the classroom as well as to reduce the failure rate among students in this course

scholarly journals Application of the Fuzzy AHP in Selection of Most Appropriate Construction Method for Tuti - Bahri Bridge

2014 ◽  
Vol 7 (1) ◽  
pp. 20
Author(s):  
Eltayeb Hassan Onsa ◽  
Hashim Mohamed Ahmed
Keyword(s):  
Construction Projects ◽  
Fuzzy Ahp ◽  
Construction Method ◽  
City Center ◽  
Bridge Construction ◽  
Quality Cost ◽  
Bridge Superstructure ◽  
Criteria Weights ◽  
Hierarchy Process ◽  
Selection Of

In presence of many kilometers of waterways and valleys in Khartoum State, bridges had become desperately needed for proper communication and development. There were many types of bridges in Sudan made of concrete and/or steel using various types of suspended, steel truss, arch and cable-stayed bridges which were constructed by different methods. The successes in bridge projects will be reached if the project achieved quality, cost saving and completed in optimum time schedule. Therefore, selecting appropriate bridge construction method is essential for the success of bridge construction projects. The Analytical Hierarchy Process (AHP) method has been widely used for solving multi-criteria decision-making problems. The Authors applied Fuzzy AHP, similar to the process suggested by Nang in 2008, to select the most appropriate construction method to be adopted for the Cable-stayed Tuti-Bahri Bridge Project which the Ministry of Infrastructures and Transportation of Khartoum State intends to construct at Khartoum city-center. The results were successfully applied for selection of the most appropriate bridge superstructure construction method among two methods. The hierarchy of the alternatives is suggested based on opinion of two Sudanese experts through questionnaires to obtain the basic criteria. Weights, from group of evaluations, are analyzed using excel spread sheets developed by the Authors. Applying Nang’s approach revealed logical procedure for selection of construction method that best suits Tuti-Bahri Bridge.

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