ORIGINAL_ARTICLE
Checking and Prioritizing the Rate of Sensetivity of Machines for Pprecautionary Maintenance with Martel & Zaras Method
(The Case: Tolid Atash Factory)
Maintenance process is one of the most necessary processes in every organization, whose main task is maintaining machines in desired conditions or restoring machines from non-optimal (nonoperational)conditions to optimal (operational) conditions. Machines failure would result in loss of machines availability time, and rise of both organization costs and production time. Also, it may cause irreparable damages to company. Therefore improving the performance process and as a result improving the maintenance process has been considered by experts. This paper aims to provide an answer to the question that basedon the selected criteria which machine needs more precautionary maintenance (PM). This research was carried out in order to improve machines lifetime, to increase customer satisfaction and to decreasedelays. In this paper, first the researchers identified the most important PM criteria in the observed factory (within 12 months in 1391(2012- 2013)). Then the MCDM method was used for prioritizing andidentifying the most vital machine in the factory. At the end some solutions for preserving these machines in the highest quality level were proposed.
https://imj.ut.ac.ir/article_50264_9670e8a1684f86d8671286cca442ff5f.pdf
2013-12-22
1
22
10.22059/imj.2013.50264
Indexes of Sensitivity
Martel & Zaras Method
Non-compensatory Method
Precautionary Maintenance (PM)
Seyed Hosein
Ahmadi
hosein.ahmadi@ut.ac.ir
1
MSc. Student, Industrial Management, University of Tehran, Iran
LEAD_AUTHOR
Nima
Mokhtarzadeh
mokhtarzadeh@ut.ac.ir
2
Assistant Prof., Faculty of Industrial Management, Tehran University, Iran
AUTHOR
ORIGINAL_ARTICLE
A System Dynamics Approach for Analyzing the Human Resource Changes in Sedan Tire Industry of Iran
The human resource managers have to make strategic andprospective decisions to respond to the unexpected changes in nationaltire industry. In this regard, system dynamics is one of the most practicaltools for searching causal structures in systems, simulating theirbehaviors against unpredicted variations, and making some reactivepolicies for possible future conditions. We try to predict and sensitivelyanalyze the required human resource capacity of national sedan tireindustry over the horizon of Iran 1404 vision through developing asystem dynamics model. The structures of sedan tire industry aredesigned based on Sterman’s methodology and the recent 10 yearscorresponding data on the effective variables is identified. Collected datadescribed by mathematical equations is then considered as the model’sinput in Vensim. Based on the designed model, the behavior and finalresults of variables are evaluated until the end of time horizon. Numericalresults indicated that the number of human resources employed in sedantire industry at the end of Iran 1404 vision will approximately be equal to15000. By establishing a sensitivity analysis, the effect of the keyvariables, particularly the demand, on sedan tire industry is examined andsuggestions for making macro-planning policies for production andhuman resource in different conditions are provided.
https://imj.ut.ac.ir/article_50266_164b223c85340446cda8feb4d927a50f.pdf
2013-12-22
23
48
10.22059/imj.2013.50266
dynamic analysis
Dynamic Modeling
Human Resource Analysis
Tire Industry
Morteza
Elahi
mortezaelahi.eng@gmail.com
1
M.Sc. Student in Industrial Engineering, Yazd University, Yazd, Iran
AUTHOR
Mohammad mehdi
Lotfi
lotfi@yazd.ac.ir
2
Assistant Prof, Department of Industrial Engineering, Yazd University, Yazd, Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
University Course Timetabling Using Graph-based Hyper Heuristics
University course timetabling is a complex optimizationproblem. There are many components like departments, faculties, rooms,and students making the problem huge and difficult to solve. Eachcomponent enforces a set of normally conflicting constraints on thesolution space. The problem will be solved if courses are scheduled indifferent rooms and within some specific time slots such that a set ofconstraints are satisfied. In this paper, a graph-based hyper-heuristic isproposed to find a solution to the problem. This is a two tiers modelingapproach combining hyper heuristic with graph coloring technique. Theupper tier heuristic is used to select a suitable heuristic to find a feasiblesolution on the lower tier. To find the suitability of the proposedapproach, it has been applied to a real world case. The proposed approachwas able to satisfy all the hard and soft constraints. Based on the researchfindings, it can be concluded that a graph-based hyper heuristic approachis a suitable and computationally efficient method to find a solution touniversity course timetabling problem.
https://imj.ut.ac.ir/article_50268_dbf7a8bab68476edd8852dbf4cacb020.pdf
2013-12-22
49
70
10.22059/imj.2013.50268
Graph Coloring
Hyper heuristics
Local Search
University course timetabling
Khodakaram
Salimifard
salimifard@pgu.ac.ir
1
Assistant Prof. of Management Science, Dep. of Industrial Management, Persian Gulf University of Boushehr, Iran
LEAD_AUTHOR
Gholamreza
Jamali
gjamali@pgu.ac.ir
2
Assistant Prof. of Management Science, Dep. of Industrial Management, Persian Gulf University of Boushehr, Iran
AUTHOR
Salman
Babaeezadeh
sabz.as@gmail.com
3
M.Sc. in Industrial Management, Dep. of Industrial Management, Persian Gulf University of Boushehr, Iran
AUTHOR
ORIGINAL_ARTICLE
Measuring Efficiency Using Fuzzy DEA and Fuzzy Constraints to Control Weights and to Find a Common Set of Weights
In this paper it has been tried to present a model by usingsome changes in the classical DEA models and combining these modelswith fuzzy models to eliminate these weaknesses. Inputs and outputs arerecognized by using MCDM and AHP techniques and experts views. Inthe next step, the gathered data is compounded by fuzzy techniques andentered in the special DEA model after changing to the crisp amounts.Solving DEA model and attaining common set of weights will helpillustrate the efficient and inefficient units. As an illustrative case study,the present research applies the proposed approach to evaluate theefficiencies of 18 regional management units of Fars Power DistributionCompany in the year 1384 (2005). Finally, some areas are also suggestedfor further research to be undertaken in future.
https://imj.ut.ac.ir/article_50270_8ed074236d32fb6daaa2d2492eaae645.pdf
2013-12-22
71
84
10.22059/imj.2013.50270
Data Envelopment Analysis
Efficiency
Fuzzy logic
Fuzzy Data Envelopment Analysis
Power Distribution
Mohammad Reza
Sadeghi Moghaddam
rezasadeghi@ut.ac.ir
1
Assistant Prof. Industrial Management, Tehran University, Iran
AUTHOR
ali hosein
gharib
ali.gharib@hormozgan.ac.ir
2
Lecturer, Industrial Management, Hormozgan University, Ir
LEAD_AUTHOR
ORIGINAL_ARTICLE
Analyzing the Factors Influencing Delay of Projects in Zone 3 of Iranian Gas Transmission Company
Organizations particularly in project structure pay specialattention to the efficient management and make a lot of efforts to achievethis goal by reducing delay in projects. Gas transmission zones are amongthose kinds of organizations whose main activities are considered to be inproject structure. Thus the significance of project management and thepathology of delay that imposes exorbitant costs on organization will bemore noticeable. In the present essay, project pathology and leadingcauses of delay in the projects of zone 3 of Iranian Gas TransmissionCompany have been investigated. In a similar vein, some managers andexperts have been interviewed and a questionnaire has been used to provetheories from T test and to rank the major causes of delay in projects fromFriedman test. Based on finding from this essay, the most effective causeof project delay from the respondents’ point of view is the contractor'sfailure to perform his obligations and the least effective cause tends to bethe external issues. The findings stemming from this essay can be utilizedfor the purpose of project pathology in all the gas transmission zones andsimilar organizations.
https://imj.ut.ac.ir/article_50271_5e03cc6759c90f4861cd5f01d05ba281.pdf
2013-12-22
85
102
10.22059/imj.2013.50271
project
Project management
Project Pathology
Zone 3 of Iranian Gas Transmission Company
Ali
Attafar
attafar@yahoo.com
1
Assistant Prof. Isfahan University, Isfahan, Iran
AUTHOR
Mohammad
Eghbali
eghbali2020@yahoo.com
2
MSc. EMBA. Isfahan University, Isfahan, Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
Explaining the Role of Transferring Technology in Fuzzy QFD for Competitiveness of Product (Case Study: Iran Transfo Rey Corporation)
Nowadays, with increasing competition among companies,producing product or a service that is consistent with customers’requirements is an important problem. In other words, companies shouldidentify customers’ requirements in a suitable manner and shouldimplement them in technical requirements of their products. Also, forfeasibility of technical product requirements, the conflicts between theserequirements must be eliminated in the shortest possible time. Thisresearch introduces a tool for designing transformers on the basis ofcustomers’ requirements in Iran Transfo Rey Corporation. For thispurpose first the researcher used Fuzzy Quality Function Deployment(QFD). In the process of House of Quality (HOQ) the Fuzzy AnalyticalHierarchy Process (FAHP) was used for weighting the customers’requirements and Super Decisions Software was used for calculating thereliability of the questionnaire. In the HOQ output, the importance oftechnical designing was expressed on the basis of customers’requirements. But there was a conflict between these technicalrequirements. Therefore, we used TRIZ tools based on the importance ofthese requirements for elimination the conflicts in the shortest possibletime, and this means transferring technology.
https://imj.ut.ac.ir/article_50273_1ba848316fb689e77f48a94339829ae6.pdf
2013-12-22
103
120
10.22059/imj.2013.50273
FAHP
Fuzzy theory
HOQ
QFD
Transferring Technology
TRIZ
Hassan
Farsijani
h-farsi@sbu.ac.ir
1
Associated Prof. in Industrial Management, University of Shahid Beheshti, Tehran, Iran
AUTHOR
Mohammad Ali
Torabandeh
m.a.torabandeh@gmail.com
2
MSc in Industrial Management, University of Shahid Beheshti, Tehran, Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
A Hybrid PCA-GP Model for Attack Helicopter Selection
This study provides an alternative approach to decisionmaking and its application in selecting the best attack helicopter. In thisway, Principal Component Analysis (PCA) is used to find the weights ofthe criteria after identifying the effective criteria for the evaluation andselection of attack helicopters. These weights, then, applied in theobjective function of Goal Programming (GP) model. Finally, the bestoption was selected through implementing GB model per correspondingparameters for the available options. Several advantages of the model,such as less reliance on user’s perceptions and subjective opinions,greater emphasis on real data, removing multicollinearity among theevaluation criteria, significant reduction of evaluation problemdimensions without much loss of information, flexibility in theapplication of quantitative and qualitative criteria, and ease of applicationshow the proposed approach is more capable in solving the evaluationand selection problem.
https://imj.ut.ac.ir/article_50275_876cac6383b8cb9e19fe38976009143e.pdf
2013-12-22
121
140
10.22059/imj.2013.50275
Goal Programming
Helicopter
Principal component analysis
Weapon System Selection
Rahim
Foukerdi
r.foukerdi@gmail.com
1
Assistant Prof. in Production and Operations Management, University of Qom, Iran
LEAD_AUTHOR
Reza
Alikhani
alikhani64@gmail.com
2
M.Sc. Student in Industrial Management, Science and Research Branch, Islamic Azad University, Tehran, Iran
AUTHOR
Mohsen
Sadeq Amalnik
amalnick@ut.ac.ir
3
Assistant Prof. in Industrial Engineering, University of Tehran, Iran
AUTHOR
ORIGINAL_ARTICLE
Identifying Functions of Parent Organization: A Case Study in Project-Based Organizations of the Construction Industry
The performance of organizational projects has an eminentrole in successfully implementing strategies. This is especially importantin project-based organizations whose business is projects. Parentorganization as one of the groups that determines projects’ success andfailure has various functions regarding its projects. Identifying thesefunctions develops literature on project-based organizations and helps tounderstand them more deeply. Using qualitative approach and a multiplecase study, seven project organizations in construction sector werestudied. The results of within-case analysis revealed seven mainfunctions. Having identified these functions, project-based organizationsshould try to develop necessary capabilities to better perform them andformulate strategies and policies to support them.
https://imj.ut.ac.ir/article_50277_64314b6e93ec6584bb31f774de41d4e8.pdf
2013-12-22
141
154
10.22059/imj.2013.50277
Construction Industry
Organizational Functions
Project-Based Organizations
Project management
Ali
Mohaghar
amohaghar@ut.ac.ir
1
Associate Prof. in Industrial Management, University of Tehran, Iran
AUTHOR
Ahmad
Jafarnejad
jafarnjd@ut.ac.ir
2
Prof. in Industrial Management, University of Tehran, Iran
AUTHOR
Mahmood
Golabchi
golabchi@ut.ac.ir
3
Prof., University of Tehran, Iran
AUTHOR
Younis
Jabarzadeh
yjabarzade@ut.ac.ir.com
4
Ph.D. Student in Operations and Production Management, University of Tehran, Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
Abstracts
https://imj.ut.ac.ir/article_50279_4f70a5faf74fd2baa6b694da14ca006f.pdf
2013-12-22
1
8
10.22059/imj.2013.50279