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Operations Research, Systems Engineering and Industrial Engineering Commons™

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Operational Research

Selected Works

Mohammadsadegh Mobin

Articles 1 - 8 of 8

Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering

An Integrated Gray-Fuzzy Cause And Effect Approach To Determine The Most Significant Categories Of Project Risks, Amin Vafadarnikjoo, Mohammadsadegh Mobin, Christian Salmon, Nikbakhsh Javadian Jun 2015

An Integrated Gray-Fuzzy Cause And Effect Approach To Determine The Most Significant Categories Of Project Risks, Amin Vafadarnikjoo, Mohammadsadegh Mobin, Christian Salmon, Nikbakhsh Javadian

Mohammadsadegh Mobin

Identifying critical risks in projects has become a core step in project risk management process; however, the nature of this step can be complex and unstructured, suggesting a benefit in research towards prioritizing project risks on the basis of a cogent method. This paper presents a Gray Decision Making Trial and Evaluation Laboratory (GDEMATEL) method for prioritizing sources of project risk within a multi-criteria decision making (MCDM) framework. The framework categorizes sources of risk via the Project Management Institutes’ (PMI) Risk Breakdown Structure (RBS). For this study, project expert judgments and preferences are the source of knowledge about project risk. …

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An Integrated Ahp-Gis-Mclp Method To Locate Bank Branches, Sajjad Allahi, Mohammadsadegh Mobin, Amin Vafadarnikjoo, Christian Salmon Jun 2015

An Integrated Ahp-Gis-Mclp Method To Locate Bank Branches, Sajjad Allahi, Mohammadsadegh Mobin, Amin Vafadarnikjoo, Christian Salmon

Mohammadsadegh Mobin

One of the most crucial decision making processes in banking is optimally locating new branches. This issue is highly important especially for private banks due to vibrant competition, limited budgets and high customer expectations. This study’s objective is to provide an integrated model for selecting optimal site location using available data sources and well accepted decision models, specifically Analytic Hierarchy Process (AHP), Geographic Information System (GIS) and Maximal Covering Location Problem (MCLP).As a case study, we applied the proposed method for branch location of a private bank in the city of Rasht, Iran. The process identified the most commonly used …

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Investigating Cavitation Peening Parameters For Fatigue Performance Using Designed Experiment, Mohammadsadegh Mobin, Afshan Roshani, Mahmood Mobin, Ali Rastegari May 2015

Investigating Cavitation Peening Parameters For Fatigue Performance Using Designed Experiment, Mohammadsadegh Mobin, Afshan Roshani, Mahmood Mobin, Ali Rastegari

Mohammadsadegh Mobin

Mechanical surface enhancement techniques such as cavitation peening (CP) have various design parameters which can affect the fatigue performance of the part. In this study, a full factorial design of experiment is applied to investigate the effects of cavitation peening process parameters on the fatigue performance of carburized steel. These parameters include standoff distance, cavitation number, nozzle size, and exposure time. The response variables considered in this experiment include residual stress, surface roughness and austenitic ratio. Results obtained from full factorial design of experiment method were compared with the results from literature which applied Taguchi method. The comparison revealed that …

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Aviation Technical Publication Content Management System Selection Using Integrated Fuzzy-Grey Mcdm Method, Ashley Skeete, Mohammadsadegh Mobin May 2015

Aviation Technical Publication Content Management System Selection Using Integrated Fuzzy-Grey Mcdm Method, Ashley Skeete, Mohammadsadegh Mobin

Mohammadsadegh Mobin

The development of commercial maintenance and overhaul manuals for aerospace engines is requisite for certification by the Federal Aviation Administration (FAA). Robust content management systems are used for authoring, publishing, and maintaining these manuals which must meet general industry standards as well as unique company requirements. Therefore, system selection is complex, requiring review of numerous criteria of both quantitative and qualitative nature and is highly dependent on expert judgment which includes uncertainty. In this paper, a major aerospace company was used as a case study for an integrated Fuzzy-Grey Multi-Criteria Decision Making (MCDM) methodology for the selection of a technical …

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Performance Evaluation Of Tehran-Qom Highway Emergency Medical Service System Using Hypercube Queuing Model, Mohammadsadegh Mobin, Zhaojun Li, Maghsoud Amiri May 2015

Performance Evaluation Of Tehran-Qom Highway Emergency Medical Service System Using Hypercube Queuing Model, Mohammadsadegh Mobin, Zhaojun Li, Maghsoud Amiri

Mohammadsadegh Mobin

This paper studies the ambulance deployment of the Tehran-Qom highway emergency medical service (EMS) system. The response time of EMS to an emergency call can have impact on the users in terms of the life and death, and this performance metric is evaluated using the proposed hypercube queuing model. The model is based on spatially distributed queuing theory and Markovian analysis approximations, and it is one of the most effective approaches for analyzing emergency response systems. In this research, performance measures of the EMS including workloads and mean response times are evaluated using the hypercube model. Modification to the existing …

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Topsis As A Method To Populate Risk Matrix Axes, Christian Salmon, Mohammadsadegh Mobin, Afshan Roshani May 2015

Topsis As A Method To Populate Risk Matrix Axes, Christian Salmon, Mohammadsadegh Mobin, Afshan Roshani

Mohammadsadegh Mobin

This research utilizes TOPSIS (a Multi-Criteria ranking methodology) to populate the axes of a risk matrix when modeling risk exposure onboard commercial fishing vessels with the intent to identify mitigating interventions in low risk settings for possible transfer to high risk settings. The specific hazard of interest is the release of refrigerants into confined spaces onboard commercial fishing vessels. The metrics of risk are: 1) expectation that refrigerants are released onboard vessels, and 2) consequence of releases that have occurred. To model expectation: data were collected on the United States’ commercial fisheries, including location and number of participating vessels. These …

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Multi-Objective X-Bar Control Chart Design By Integrating Nsga-Ii And Data Envelopment Analysis, Mohammadsadegh Mobin, Zhaojun Li, Mahdi Massahi Khoraskani May 2015

Multi-Objective X-Bar Control Chart Design By Integrating Nsga-Ii And Data Envelopment Analysis, Mohammadsadegh Mobin, Zhaojun Li, Mahdi Massahi Khoraskani

Mohammadsadegh Mobin

Control charts are widely used in industry to establish and maintain statistical control of a process for quality improvement. Economic use of a control chart calls for designing the optimal parameters for sample size, sampling frequency, and the control limits for the chart. This paper investigates the X-bar control chart design through a two-stage multi-objective optimization process. The multi-objective formulation reflects the multiple objective needs in designing an X-bar control chart. For example, these objectives may include average run length when in statistical control, the type-I error, and the detection power. The optimization process first searches the Pareto Frontiers using …

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Food Product Target Market Prioritization Using Mcdm Approaches, Mohammadsadegh Mobin, Mohammad Dehghanimohammadabadi, Christian Salmon May 2014

Food Product Target Market Prioritization Using Mcdm Approaches, Mohammadsadegh Mobin, Mohammad Dehghanimohammadabadi, Christian Salmon

Mohammadsadegh Mobin

This paper applies multiple Multi-Criteria Decision Management (MCDM) methods as a mechanism for identifying international markets for a producing nation’s food production. The specific application presented in this paper is for export markets of Iranian Pistachios; however, the model could be applicable across multiple food products and nations. Quantitative and qualitative criteria for market assessment were identified via a literature review. These include: 1) Regulation criterion, 2) Cultural criterion, 3) Transportation distance criterion, 4) Economy criterion, 5) Market potential criterion, 6) Politics criterion, 7) Revealed Comparative Advantage (RCA). Shannon’s Entropy method was applied to weight criteria based upon the context-dependent …

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