scholarly journals A Proposed Framework for Developing FMEA Method Using Pythagorean Fuzzy CODAS

Symmetry ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2236
Author(s):  
Sara Almeraz-Durán ◽  
Luis Asunción Pérez-Domínguez ◽  
David Luviano-Cruz ◽  
Jesús Israel Hernández Hernández ◽  
Roberto Romero López ◽  
...  

The purpose of this research article is to develop a hybridization between the Failure Mode and Effect Analysis (FMEA) method and the Combinative Distance-Based Assessment (CODAS) method under Pythagorean Fuzzy environment. The traditional FMEA procedure is based on the multiplication between the parameters of severity, occurrence, and detectability where everyone has equal relative importance; therefore, different combinations of these parameters can generate the same result creating uncertainty in the analysis. In this mode, the hybridization proposed in this research deal with relative importance of each parameter; in the fact to have a more suitable combination which consider the level of knowledge of the experts in the assessment. Finally, a numerical case was carried out concerning the public transportation service to validate our proposal; the results show that 31 failure modes and potential risks can be evaluated using user perceptions, a dominant with high level of knowledge about the public transportation service and an apprentice or common user, as team of experts and exploiting the subjectivity of the information in a mathematical model. Also, we compare the results with a variation of the proposed model with the multi-criteria method multi-objective optimization method by relationship analysis (MOORA); it was observed that the convergence of the failure modes depends on the nature of the mathematical model even under the same conditions at the start.

2020 ◽  
Vol 12 (21) ◽  
pp. 9066
Author(s):  
Methawadee Chaisomboon ◽  
Sajjakaj Jomnonkwao ◽  
Vatanavongs Ratanavaraha

Due to the rapid increase in population and the change in age structure toward the elderly, the phenomenon of societal ageing is being witnessed in many countries. The elderly travel less than the adult population due to decreasing mobility with an increasing age. In this study, we aimed to analyze the expectations and satisfaction of public transport users in Thailand using traditional importance performance analysis (IPA), gap analysis, and IPA integrated with competitor performance. We aimed to explain the differences in the analysis results produced by the three methods. The data were obtained from surveying 2250 elderly and 450 non-elderly adults. This study presents guidelines for improving the public transport service quality in Thailand to meet user needs. The results of this research showed that each approach provides its own distinctive aspects and theoretical differences, which lead to different interpretations. The results from the three approaches showed that equipment that increases safety for public transportation service users is an important factor for all elderly passengers that must be improved. Public transportation services in different regions should be developed to provide more reliable and regular services.


2021 ◽  
Vol 4 (2) ◽  
pp. 106-114
Author(s):  
Khairunnisak Khairunnisak ◽  
Dina Fajar Sulistiyani ◽  
Zezya Ramadhany

The common of urban city problem is a traffic jam, and it is heavily affect the public transportation service quality. Many cities in tropical countries suffer of heavy traffic jam due to the populaition of motorbike. According to Central Java Province Government, in 2014 the population of motorcycle is 439.418 units with the ownership ratio at 0.75 unit/person. Solo is one of typical middle size city in Central Java, Indonesia. Solo suffers from traffic jam in particular time of the day and it affect the quality of service of batik solo as the mass transportation service in Surakarta. This research would like to help the community get the optimal travel route with the fastest time, especially at the busiest times. The method used is Generate and Test algorithm. This method is a combination of Depth First Search and Backtracking. This research is conducted to get information about the influence of traffic volume, service road level and traffic jam level toward the time needed for Batik Solo Trans to find the optimal route. There is a route that been selected to be the most optimal route by considering the factors that influence it and the algorithm applied


2020 ◽  
Vol 4 (2) ◽  
pp. 121-142
Author(s):  
Ayu Ayda Lestari ◽  
Toto Kushartono ◽  
Arlan Siddha

The title of this research is : "The Effect of Local Government Policy Implementation on the Effectiveness of Changes in the Public Transportation Route Network in Cianjur Regency". The background of this research is the ineffective implementation of local government policy. This research used an explanation survey with a quantitative approach. This research was conducted at the Cianjur Regency Transportation Service Office, Rawabango Terminal, Pasirhayam Terminal, Main Market, Jalan Siliwangi, Jalan Dr. Muwardi. Collecting data in this research is through survey, observation, and documentation. The sampling technique used is probability sampling with simple random sampling. The theory of this research is policy implementation from Mazmanian and Sabartier and for the theory of effectiveness by Siagian. The results of the research showed that there is no affect of the implementation of local government policy on the effectiveness of changes in the network of public transport routes in Cianjur Regency. Marked by the characteristics of the problem can not be identified, then the carrying capacity of regulations and non-regulations that can affect the process of implementation can not be implemented properly.


2011 ◽  
Vol 10 (1) ◽  
pp. 73-84 ◽  
Author(s):  
Stephanie Farmer ◽  
Sean Noonan

AbstractBoth mainstream and progressive commentators heralded President Obama’s economic stimulus program as sounding the death knell of the global neoliberal accumulation regime and inaugurating a form of Neo-Keynesianism. Although some funds have been earmarked for urban infrastructure projects, elite actors have used the shock of the crisis as a pretext to delimit and dismantle the public sector. In this article, we examine the case of Chicago’s public transportation in order to evaluate these countervailing forces. On one hand, federal stimulus money has been used to rehabilitate deteriorating public transit infrastructure. On the other hand, the response of local elites to budget shortfalls caused by the current economic crisis has involved support for a combination of service cuts and intensified attacks on unions to “share the burden”. Our study of neoliberalism in Chicago’s public transit sector illustrates how local elites strategically wield the state as an instrument for accumulation, whether by retrenching the role of the state or mobilizing for a more activist role of the state in seeding accumulation.


2020 ◽  
Vol 4 (2) ◽  
pp. 129-136
Author(s):  
Vertic Eridani Budi Darmawan ◽  
Yuh Wen Chen

Accessibility to tourist destinations is an important component in a tourism system, especially for natural tourist destinations located in suburban areas. Good linkage of travel information and physical connections with local transportation services for intercity travel can facilitate more people to travel and promote national tourism destinations. This research takes the popular national tourism destinations and their public transportation service in Taiwan as a research object due to the unavailability of integrated public transport information service. Free Independent Travelers (FIT) demand is growing. This research aims to integrate intermodal public transportation information to support FIT by proposing a seamless way journey planner. In this scenario, the journey planner requires timetable data as input. The Connection Scan Algorithm is used to find the earliest arrival time routes at their destinations. This journey planner is built in PHP language and can complement the official tourism travel information website by Tourism Bureau, MOTC. Hence, the FIT could get the quickest routes to reach the destinations without compiling the public transportation information provided independently.


2010 ◽  
Vol 22 (9) ◽  
pp. 950-964
Author(s):  
Besar Setyabudi

Typical. of public transportation in Ban ten is dominated m; small-mini bus with capaci.tt; of 12 passengers.The S!JSfem of this public transportation lws already arranged btj local government. The m1lagersusually waiting for this public transportation on the side of the street near their village since thereis ven; rare of bus stop in Prouince Ban ten. One of the 111ost common transportntion challenges todm;in Provision Banten is keeping up witli tlze mpirf 1illngers' populntion growth. This populationgrowth directly affects existing public tmnsportntion capacihJ nnd congestion levels - which directlyaffects the distnbution of haniest since the congestion used to happened and seen in many street notJar from traditional market, school, hospital and some road trmielled. Road safett; has not seen aspriori.ti; for the public transportation in Banten, as it seen from the vehicles' feasibilitt;, driver's behmJiorthat require regular superoi.se and from the passengers view as well since thei; tend to ignore thesafety as long as their need of transportation fulfilled. 77ie operationnl movement of public transportationin Banten cnn be dizrided into three cntegories; lm si!d on time (bu51; time nnd unoccupied),purpose of trmJel (working, school, and shopping), and type of ncti1ihJ (e.g: houselwld business).Public transportation in Pr011ince of Bnnten senes two cities nnd four districts including 1.207dependent villages, and reliant villages and any other kinds of village. 77re result of this stud!; is kindof recommendations for tire regional government in order to improve tire safett; road moreover thequality of public transportation service in Prouince of Ban ten.Key words: public transportntion, uillnges articels


Author(s):  
Zheyong Bian ◽  
Xiang Liu

First-mile and last-mile travel is the bottleneck of using the public transportation service. This paper considers the passenger matching and vehicle routing problem in the first-mile ridesharing service connecting train schedules. Then a mixed integer model is proposed to formulate the problem. Since the problem is NP hard, we develop a simulated annealing (SA) algorithm with four neighborhood structures to solve this problem. Experiments are designed to test the proposed model and algorithm. The experimental results verify the effectiveness of the algorithm and demonstrate that the proposed algorithm can obtain satisfactory solutions within a reasonably short time.


2003 ◽  
Vol 1843 (1) ◽  
pp. 105-112 ◽  
Author(s):  
Jon E. Burkhardt

Improvements to public transportation services are being made, or can be made, to offer better public transportation services for older travelers. Communities in which some of the most forward-looking ideas have been applied were examined. A number of short-term, low-cost improvements have been shown to be beneficial, but new perspectives are also needed. In the long run, multiple types of services, offered at varying prices, are needed to replace the “one size fits all” approach to public transportation with options that riders could choose on their own to fit the specific demands of individual days and trips. Shared-ride, demand-responsive services, dispatched and controlled through advanced technologies, could provide higher levels of service than now available and at higher levels of productivity and cost-effectiveness. Frequent, comfortable, affordable, spontaneous service to a wide variety of origins and destinations over a wide range of service hours is what seniors desire. A serious challenge for the public transportation industry will be finding ways of providing such services while collecting revenues that cover their costs. A key finding of this research is that the transportation service attributes most highly valued by older riders are not markedly different from those valued by other transit riders, so that improvements that would best serve older riders will also attract significant numbers of other riders.


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