Optimization of multi-product dynamic
routing model for vehicles after disaster,
with justifiability of demand shortage
Sohrab
Abdollahzadeh
Industrial Engineering Dept., Faculty, Urmia University of Technology, Urmia, Iran.
author
Tina
Namdari
MA student, Industrial Engineering Dept., Urmia University of Technology, Urmia, Iran.
author
text
article
2020
per
Regarding the five-fold increase in unexpected accidents in the past decade and the increase in its human and financiallosses, the relief supply chain has always been considered by humanitarian organizations as a suitablesolution to reduce the cost of disaster. One of the most important fields in this area is the routing of vehicles, whichhas an important role in improving service to the injured. Undoubtedly, the selection of inappropriate routes forvehicles has a negative effect on timely and suitable relief operations. Several studies have been conducted in thisregard, the models presented by them are often periodic and single-product, and the demand shortage of sheltersis not permitted. In this research, a multi-product relief chain network has been proposed, including three mainareas: vehicle maintenance centers, distribution centers for relief supply chains and shelters. The proposed mathematicalmodel, with a goal to maximizing the supplied demand, by a minimum of vehicle and time, addresses thedynamically routing of vehicles. In the event of excess demand, at the end of the operational periods, the amountof unsupplied demand for each type of product will also be determined in terms of each shelter. In order to validatethe proposed model, information of the 4th district of Tehran province, which is published in the basic papers, isutilized and has been solved by GAMS software. The results of the numerical solution of the model showed thatall relief operations are in order to maximize the supply of demand in the shortest time. Also, the amount of unsupplieddemand for shelters, the amount and type of goods carried, and the route of each vehicle’s movement in eachperiod, are other outcomes of the model
Emergency Management
Malek Ashtar University of Technology in collaboration with the Iranian Association of Safety Sciences
2345-3915
9
v.
2
no.
2020
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https://www.joem.ir/article_46982_db20cb638fb879d494bcde26ecc322c0.pdf
Establishing an emergency relief chain in a
crisis with the approach of multiple transfer
points and facilities location
case study: south-central regions of Tehran
seyedhosein
seyedi
allameh tabataba'i
author
seyedhosein
seyedi
management faculty, allameh tabataba'i
author
msghsod
amiri
.allameh tabatai university
author
mohammad taghi
taghavi fard
.allameh tabatabai university
author
text
article
2020
per
Relief of injuries is one of the most important stages of crisis management that should be planned for it before theincident. Timely and productivity relief will significantly reduce the financial and human losses. Considering thisnecessity, in this paper, proposed a mixed-integer mathematical model of multiple transfer points and facilities locationfor the formation of a relief chain during the earthquake crisis, which facilities includes hospitals, rescue centers,warehouses and shelters. Screening the injuries according to the triage system and providing outpatient health care atthe transfer points, transfer the yellow injuries to the relief centers, dual transfer of the red injuries to the hospital, payingattention to the type of goods needed at any point, and finally, adding budget constraint to set up facilities are the paper’sassumptions that developed the transfer points and facilities location model. To evaluate the model in real term a casestudy was conducted in south-central regions of Tehran. Model was once solved with specified number of facilities, andagain with consideration of budget constraint, in the second condition, better and more practical results were obtained. Asthe budget increases, the number of transfer points increases that indicating the importance of them in reducing the relieftime. Therefore, the establishment of transfer points is an effective strategy in the efficiency of the relief process duringa crisis. Attention to the distribution of hospitals in the city for the construction of new hospitals, the establishment of airrescue infrastructure in hospitals, identification of resistant buildings to change their use in crisis as a backup facility, andtraining the process of relief to citizens, are important solutions in the proper functioning of the relief chain
Emergency Management
Malek Ashtar University of Technology in collaboration with the Iranian Association of Safety Sciences
2345-3915
9
v.
2
no.
2020
19
31
https://www.joem.ir/article_46983_385ef94c35be518cee1b39d614e233fe.pdf
Modeling and solving the problem
of locating bi-objective allocation in
humanitarian logistics with regard to
urban infrastructure
Shirin
Alizade
Department of Industrial Engineering, University College of Ayandegan, Tonekabon
author
Reza
Hassanzadeh
Department of Industrial Engineering, University College of Rouzbahan, Sari, Iran
author
text
article
2020
per
Crises are the inevitable realities of human life; which is an accident that occurs naturally or suddenly orincreasingly by human and to address it, there is a need for urgent and fundamental measures. When thecrisis occurs, pre-determined storage locations will play an important role in relief; therefore, the selection ofsuitable places for warehouses is one of our main goals in this research. In this research, a bi-objective linearprograming model with integer variables is developed. The proposed model attempt to minimize total costalong with maximizing the minimum weight of open shelter areas while deciding on the location of shelter areas,the assigned population points to each open shelter area and controls the utilization of open shelter areas.In order to solve proposed model, some of well-known multi-objective, exact methods include a weightedsum method, LP-metric method, and goal programing approach are employed. Finally, the best open shelterareas with considering the minimum cost is obtained, which these results can be useful for crisis organizations.
Emergency Management
Malek Ashtar University of Technology in collaboration with the Iranian Association of Safety Sciences
2345-3915
9
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2
no.
2020
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https://www.joem.ir/article_46984_40efb87bb84757390ef07052e9fe1906.pdf
Investigating the Factors Affecting the
Level of Team Effectiveness at the Time
of the Crisis
Case study of Red Crescent Cooperative Team in Kerman
Province
mehdi
ebrahiminejad
management
author
mahboobeh
askari
management department
author
sajjad
sivandi
management department
author
text
article
2020
per
Every year, natural disasters around the world cause death, physical damage and many diseases. In recentdecades, disasters and their effects throughout the world have been exponential, with many causes leadingto an increase in incidence and deaths. Has been. Hence, the development and strengthening of nationalfacilities, especially human resources, to reduce the impact of natural disasters is absolutely necessary. Consideringthe importance of the issue, the present study seeks to be effective factors in raising the team’s efficiencyduring the crisis. The present research is applied in terms of purpose and in terms of nature and method,a descriptive correlation type. The statistical population of this research is all the operational teams of the RedCrescent Society of Kerman province. The population of the study consisted of 210 people, using the Cochranformula, the sample size was 135. A researcher-made questionnaire was used to collect information that examinedfour components of organizational culture, professional ethics, leadership and work knowledge aswell as the effectiveness of the team. The reliability of the questionnaire was 0.799 and its validity was confirmedby experts. SPSS and Smart PLS2 software were used to analyze the data. Findings of the researchshowed that the variables of work knowledge, professional ethics and leadership of the team’s effectivenesswere positive, but organizational culture did not affect the team’s effectiveness
Emergency Management
Malek Ashtar University of Technology in collaboration with the Iranian Association of Safety Sciences
2345-3915
9
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2
no.
2020
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https://www.joem.ir/article_46985_fd4a505524603784dc4dfa88b827a06b.pdf
Presenting a Model for the Formation and
Representation of a Knowledge Map of a
Research Unit under Critical Conditions
Skills and expertise recognition approach
mohammad reza
zahedi
Maklek Ashtar University of Technology
author
masoud
darabi
Malek ashtar university of technology
author
mohammad
farasi
Malek Ashtar University of Technology
author
text
article
2020
per
This paper presents a model for designing and representing a knowledge unit of a research unit in critical situationswith a skill recognition and expertise approach. To do this, topics such as definitions of the map of knowledgeand its types, the reason for mapping knowledge and its key principles of drawing, classification of knowledge maps,the advantages and disadvantages of such maps and case studies were studied. Then, by analyzing the strengths andweaknesses of the aforesaid, a six-step model was presented for representing the knowledge map in a research unitthat consists of six steps: 1. identifying the field of knowledge. 2. Identifying supervisors and operational managers.3. Extracting relationships between employees and also, meta-knowledge about people. 4. Extracting informationand knowledge of people. 5. Drawing up knowledge map. 6. Providing mechanism for updating and analyzingstrengths and weaknesses. The validation of the model was carried out in the form of a question from the expertsfamiliar with the basics of knowledge management and crisis management, including 9 sample samples available.
Emergency Management
Malek Ashtar University of Technology in collaboration with the Iranian Association of Safety Sciences
2345-3915
9
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2
no.
2020
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67
https://www.joem.ir/article_46988_7e697073982ae7282e9d12118ee6b4ed.pdf
Identification and ranking of Engineering-
To-Order supply chain risks by using Jackknife
resampling method and interval analysis
Mohammad reza
Edalat Sarvestani
University of Sistan & Baluchestan
author
Mohammad Reza
Shahraki
Faculty member
author
text
article
2020
per
Due to the rapid and extensive changes in the supply chain, organizations need to identify and evaluate the riskaccurately in order to survive in the competitive cycle and to implement effective supply chain management.The supply chain consists of a diverse structure, and while today the variety of products to meet the needs of customershas become vast, custom manufacturing capabilities, which are in fact the same engineering structure as theorder (ETO), are a competitive advantage. A preliminary study of the research shows that few studies have beencarried out on the identification and ranking of Engineering-to-order supply chain risks. There are few informationin the absence of experts or time constraints; some existing models do not provide accurate ranking of Engineeringto-order supply chain risks. In order to solve this problem, in this paper, Jackknife resampling method is used. Inaddition, it is difficult to determine the exact amount of risk in reality. For this purpose, the interval analysis methodfor estimating the risks in terms of the interval has been used according to the concept of the confidence intervaland the opinions of the experts. Therefore, in this paper, using Jackknife resampling method with interval Analysis,the evaluation and ranking of the factors affecting the management of Engineering-to-order supply chain risks hasbeen done. Calculation results of JackKnife resampling method and interval analysis shows that the categories ofrisks which is Dependent to order risks, Environmental’s risks and Operational risks have the most priority amongengineer-to-order supply chain risks.
Emergency Management
Malek Ashtar University of Technology in collaboration with the Iranian Association of Safety Sciences
2345-3915
9
v.
2
no.
2020
69
82
https://www.joem.ir/article_46994_41fc69c59262809d066c7da7629bfd3d.pdf
Analysis of the Interaction between Critical
Success Factors in Emergency Management
with Combining Fuzzy Multiple criteria
Decision-Making Approaches
mahmoud
modiri
Department of Industrial Management, Faculty of Management, South Tehran, Islamic Azad University
author
text
article
2020
per
Inadequate attention to emergency management can cause a great deal of damage. Therefore, the need to improveall emergency management processes to address Catastrophe and disaster through identifying and determinationthe interaction and relationships between critical success factors is It is very necessary. This study, in perspectiveof purpose is applied research and in terms of data collection is descriptive-exploration. Critical success factors incrisis management identifying through library studies and interviews with experts. Factors identified localized byfuzzy Delphi method by the opinion of 15 experts from emergency Management Organization and university professors,and selected in four main categories: “Information and Technology Systems”, “Operational”, “Organizational”,and “Human Resources”. Then, data were collected by paired comparisons questionnaire and field methodand Data were analyzed by combining fuzzy multiple criteria decision-making and coding in Excel software. In thisstudy of fuzzy analytical network process based FUZZY DEMATEL method was used to determine the interaction,weighting and importance of factors. The findings of FUZZY DEMATEL showed that the ‘operational’ main factoris the most influenced of ‘organizational’, ‘information and information systems’ and ‘Human Resources’ factors foremergency management success, and ‘organizational’ factors improved system performance. “Operational” mainfactor and the “response teams” sub-factor are the most important for success in emergency management. Accordingto the results of this study, is expected to managers to improve the performance of emergency management withproper planning and attention to important factors and how their relationships.
Emergency Management
Malek Ashtar University of Technology in collaboration with the Iranian Association of Safety Sciences
2345-3915
9
v.
2
no.
2020
83
98
https://www.joem.ir/article_46996_a0f2f55f4c41b2e9f26a885b7fbe3619.pdf
Analysis attractiveness of the infrastructure
by using game theory method
sareh
roudbari
Consulting Engineer Company passive defense Tarhe_Noandishan
author
Mohammad Ali
Nekooie
سایر/سایر
author
Roohollah
Taherkhani
استادیار
author
text
article
2020
per
The vital infrastructure forms the foundation of any society. And the everyday life of humans depends to agreat extent on the operation of this infrastructure, and more interestingly, the infrastructure itself is dependenton one another for continuing to operate. Consider, for example, the infrastructure of water. How can itcontinue to operate without electricity infrastructure? The purpose of this paper is to analyze the attractivenessof water supply infrastructure, which is based on game theory. The theory of game theory is a mathematical approachthat was first introduced in the field of economics and then entered other disciplines. The water networkis always targeted at all major wars and hostilities as a fundamental basis. Considering the strategies of attackand resilience for the two countries, modeling of scenarios was done using the theory of games. After calculations,it was determined that among all the components of the water supply network of the refinery is of greatimportance. It was also determined that the theory of game theory is an effective method in the analysis of infrastructureand can be achieved with the desired results
Emergency Management
Malek Ashtar University of Technology in collaboration with the Iranian Association of Safety Sciences
2345-3915
9
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2
no.
2020
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111
https://www.joem.ir/article_46998_9f74e543fdecfca3b9aed07b09d5f259.pdf
The role of emergency water reservoirs as new
generation water reservoirs in quantitative and
qualitative distribution of water distribution
networks in critical situations
naser
mehrdadi
.
author
gholamreza
nabi bid hendi
.
author
akbar
emami
PhD Student of Water and Environmental Engineering, University of Tehran, Tehran, Iran
author
text
article
2020
per
Abstract Drinking water in critical times such as an earthquake in a metropolitan area such as Tehran is the most importantparameter to preserve the survival and sustainability of relief operations. Various types of emergency water supplymethods have been discussed during the earthquake, and in particular the role of emergency tanks (always in thedistribution network circuit) to provide quantitative and qualitative water supply for at least the first three days ofcrises and as a new generation water storage depots. The results of hydraulic analysis and modeling on dimensions, operating details and how to connect and deployemergency tanks show that due to the proper flow of water in these tanks they can normally be used as part of thedistribution network. The range of water stored in these tanks that will cover a radius of one thousand meters, usingmanual pumps, gasoline, in emergency situations, using a special smart valve and ... it is distributed outside and forthe benefit of the people who are affected. According to estimates by the Japan International Cooperation Agency (JICA) in the event of an earthquake measuringabout 7 on the Richter scale, access to about four million Tehran citizens will be cut off from drinkingwater for about 82 days. The project, if implemented, is expected to reduce the population to about one million peopleby 30 days and save about $ 400 million in costs and damages after a potential earthquake in Tehran.
Emergency Management
Malek Ashtar University of Technology in collaboration with the Iranian Association of Safety Sciences
2345-3915
9
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2
no.
2020
113
125
https://www.joem.ir/article_47000_ca41d57b6a7629480410b75ba14f8459.pdf
Assessing the vulnerability of urban spaces
to natural hazards with physical resilience
approach
Case study: Zargandeh neighborhood of Tehran
mohammad
taghavi zavareh
Master student of urban plannig in Tarbiat Modares University
author
Hamidreza
Saremi
Tarbiat Modares University
author
Mojtaba
Rafieian
Associate Professor of Urban Planning,Tarbiat Modares University
author
text
article
2020
per
Natural disasters, which are part of the process of human life, are a major challenge for the sustainable developmentof human societies. Consequently, the prevailing view of focusing on merely reducing vulnerabilityhas shifted to increasing resilience to disasters. Resilience is defined as “the amount of destruction and loss that asystem can absorb without going out of equilibrium” and “the ability of a system to self-organize in different conditions”.This research was conducted with the aim of identifying the vulnerability of urban spaces in Zargandehneighborhood of Tehran and adopting strategies for resilience of vulnerable spaces. This research is applied andusing the quantitative research method and descriptive-analytic approach, are extracting the indicators of physicalresilience and measuring them in the scope of the study. in order to finalize the indicators, a questionnaire ofurban science experts, and to prioritize them of Analytical Hierarchy Process (AHP) has been used. The resultsof the evaluation show that the texture and urban spaces of the central and eastern parts of the region are morevulnerable than other areas due to deterioration, Low width streets, access problems and high population density.Finally, it seems that taking measures to reduce the weakness of physical systems in urban spaces, as well as theeducation and making culture in the local community in the face with natural disasters, can be taken to promoteresilience.
Emergency Management
Malek Ashtar University of Technology in collaboration with the Iranian Association of Safety Sciences
2345-3915
9
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2
no.
2020
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137
https://www.joem.ir/article_47004_e8ff6ccd14782074555761afcf03c214.pdf