Akbar Rahimi; Abbas Raad; Akbar Alem Tabriz; Alireza Motameni
Abstract
The production of defense products is indispensable because of the role it plays in deterring and promoting the national security of the country, and, on the other hand, the economic conditions prevailing in the country have made production of defense products at the lowest cost an obligatory requirement. ...
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The production of defense products is indispensable because of the role it plays in deterring and promoting the national security of the country, and, on the other hand, the economic conditions prevailing in the country have made production of defense products at the lowest cost an obligatory requirement. The lean supply chain of defense industries by focusing on waste removal and reducing costs, is an answer for producing lower-cost defense products. The purpose of this research is to identify the most important practices of the defense industries lean supply chain, and then, using exploratory and confirmatory factor analysis, the categorization and verification of the practices based on Structural Equation Modeling (SEM), and then, using the Interpretive Structural Modeling (ISM) model, presents a model that shows the relationships between these practices. The power of driving and dependence of practices are also analyzed using the MICMAC technique. The results of the research show that out of a total of 84 practices introduced in the previous research for the lean supply chain, 94 practices are effective in the lean supply chain of defense industries. It consists of 8 categories and includes: Workshop level management, Quality management, just in time, Repairs and Maintenance management, Human resource management, Suppliers relationships, new products design and Customer relationship. Customer’s relationship as the most basic and most driving practice and supplier relationship is the most dependent practice of the defense industries lean supply chain.
Javad Behnamian; Mohammad Mehdi Bashar
Abstract
Cooperation in supply chain, due to conflicts in goals, is one the most important topics in SCM. With cooperation, players in supply chain echelons have agree with each other to play in supply chain game as a whole. To reach highest profit in the whole supply chain in cooperation condition, using game ...
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Cooperation in supply chain, due to conflicts in goals, is one the most important topics in SCM. With cooperation, players in supply chain echelons have agree with each other to play in supply chain game as a whole. To reach highest profit in the whole supply chain in cooperation condition, using game theory concept and side-contract of partnership in profits and considering marketing cost between manufacture and retailer, a cooperative multi-echelon supply chain is designed. In this paper, for the first time, mathematical modeling in fuzzy environment is presented, taking into account a discount that is approximated to the actual situation where the marketing cost is considered as triangular fuzzy number. The proposed model has been solved using Genetic algorithm (GA), simulated annealing algorithm (SA) and a hybrid algorithm based on GA-SA, for some random examples, and the model has been validated using GAMS software.
Ahmad Ahmadi; Abolfazl Kazai; Mohammad Naghizadeh; Maghsood Amiri
Abstract
Following Chesbrough's statements of open innovation as a spectrum rather than a dichotomy, many studies have been conducted to reflect the dynamics in its implementation in the form of typologies, modes, themes, and mechanisms. These studies, with considering only some aspects of the innovation process, ...
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Following Chesbrough's statements of open innovation as a spectrum rather than a dichotomy, many studies have been conducted to reflect the dynamics in its implementation in the form of typologies, modes, themes, and mechanisms. These studies, with considering only some aspects of the innovation process, have tried to develop a method for classifying and providing a model for adoption of open innovation. After reviewing the literature and interviewing with experts, the components and factors in each implementation step were obtained. Finally, to analyze and plot the interrelationships between the various components of the open innovation model DMATELE technique was used. Consequently, the open innovation model was determined in the study company. This model is the result of a chain of decisions in relation to each component of OI model within the phases of the innovation process. The decision chains include: selecting the “pre-print” domain as content of the model, choosing the direction of “market driven –invitational” for actors, and choosing mechanisms for increasing “absorptive capacity”, “transformative and connective capacity”, and “desorptive capacity.”
Seyed Mohammad Hassan Hosseini
Abstract
Today, the realization of pre-determined programs and timely supply of customer requests and orders is one of the important and strategic goals of organizations and production units. This importance is caused by importance of customer position and also exploitation of resources. In this paper, the integrated ...
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Today, the realization of pre-determined programs and timely supply of customer requests and orders is one of the important and strategic goals of organizations and production units. This importance is caused by importance of customer position and also exploitation of resources. In this paper, the integrated production planning and maintenance problem is studied. Two objective function is considered for this problem. First, minimizing total cost and second, minimizing dissatisfaction of customer that comes from delay in demands. Due to the importance of the customer place in nowadays competitive environment, the last objective function is added to problem to getting closer to the real world. First, problem is definined with variables and parameters then, bi-objective mathematical model is presented. Since, this problem has been proved as NP-hard, an approximation method is also developed based on Non-dominated Sorting Genetic Algorithm II (NSGA-II). Finally, this problem is solved by applying two algorithmand NSGA-II using standard data that is obtained from references. Results show that performance of the proposed method based on NSGA-II both in solution quality and running time is suit.
Zahra Rafiee-Majd; Hamidreza Pasandideh
Abstract
In this paper, a three-echelon supply chain, consisting a number of suppliers, distribution centers (DCs), and retailers (customers) is modeled as an integrated bi-objective inventory- location – routing problem (ILRP) which, perishable products are delivered to the customers through DCs in a limited ...
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In this paper, a three-echelon supply chain, consisting a number of suppliers, distribution centers (DCs), and retailers (customers) is modeled as an integrated bi-objective inventory- location – routing problem (ILRP) which, perishable products are delivered to the customers through DCs in a limited time horizon, consisting of several time periods. The retailers’ demand is stochastic and is applied on the model by the concept of discrete scenario. The transportation fleet is heterogeneous, and distribution centers use a timetable, which will prevent interference of the vehicles operation and allocation of a vehicle to more than one distribution center in each time period. Three methods of calculating the distance to the ideal point are used in to solve and analysis the model. At the end, besides concluding the discussion, recommendations are made for future studies.
Ali Bonyadi Naieni; Sirous Amirghodsi; Ahmad Makui
Abstract
One of the important decisions in the supply chain is the supplier selection affecting different sectors and objectives of a chain significantly. In supplier selection area, product/technology selection, product/technology transfer method selection, and product/technology supplier selection are three ...
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One of the important decisions in the supply chain is the supplier selection affecting different sectors and objectives of a chain significantly. In supplier selection area, product/technology selection, product/technology transfer method selection, and product/technology supplier selection are three debatable factors. Hence, in this paper, criteria influencing these three indicators will be identified and their importance will be ranked by Gray-DEMETEL and Best-Worst Method (BWM). Then, the priority of the options will be determined using Gray Analytical Network Process (GANP), which is one of the strongest decision-making methods. This paper attempts to demonstrate the superiority of the BWM method in determining the importance of criteria while comparing previous methods in this group. The compliance rate obtained for the BWM confirms this claim. In order to investigate the proposed approach, a case was conducted with 5 final suppliers, 3 technologies and 5 technology transfer methods, which ended with the selection of the best supplier with the highest technology and capable of transferring the technology by the optimal transfer method.
Soroush Avakh Darestani; Fatemeh Fazel
Abstract
Training and development are considered as the facilitator of Green Human Resource Management. Green training related to environmental issues and enables all employees to the organization's performance with environmental issues are integrated. The aim of this research was about investigating the relationship ...
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Training and development are considered as the facilitator of Green Human Resource Management. Green training related to environmental issues and enables all employees to the organization's performance with environmental issues are integrated. The aim of this research was about investigating the relationship between green training and green supply chain management and finally its effect on organizational performance. In this context, a developed conceptual model was designed. The statistical population included all experts and managers of the National Iranian Oil Products Distribution Company of Guilan’s region. The innovation of the present research is to measure the impact of green human resources management and supply chain management in integrating these two processes into the organization's performance. The results of the hypothesis with 95% confidence interval using structural equation modeling using LISREL software show that green education has significant impact on organizational performance through mediating role of green supply chain management and green education can be a source of competitive advantage for companies. Green supply chain management also improves the performance of the organization in terms of efficiency, effectiveness, and environmental distinction in achieving a sustainable competitive advantage
Saeed Mousakhani; Saeed Mousakhani; Mohamad Sadegh Sangari
Abstract
Integrated production-distribution planning is one of the main issues in supply chain management that plays an important role in reducing supply chain costs. In addition, choosing optimal location of distribution centers can facilitate achieving this goal. On the other hand, environmental laws and regulations ...
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Integrated production-distribution planning is one of the main issues in supply chain management that plays an important role in reducing supply chain costs. In addition, choosing optimal location of distribution centers can facilitate achieving this goal. On the other hand, environmental laws and regulations established by governments impose constraints to production and distribution activities and make necessary the adoption of green supply chain approach more than ever. In this paper, a novel model is developed for integrated location-production-distribution planning in a three-echelon green supply chain consisting of manufacturing plants, distribution centers, and customers with multiple products and multiple time periods. The objective function includes minimization of the total supply chain costs as wll as CO2 emissions throughout the chain. Also, the customer demand and service level are expressed as fuzzy Z-number in order to obtain the reliability of the values from the experts. The applicability and efficiency of the proposed model is demonstrated through a real case which, considering two indexes of customer service level and green production and distribution. In order to solve the proposed model, GAMS software package is used. Results show satisfactory performance of the proposed model in reducing costs in the green supply chain.
Ehsan Kashi; Mehri Shahriari
Abstract
Relationship management in the supply chain has a significant impact on the operational competitiveness, performance and profitability of the companiesand power is one of the important concepts that is considered in the relationships between members of a supply chain. The purpose of this study was to ...
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Relationship management in the supply chain has a significant impact on the operational competitiveness, performance and profitability of the companiesand power is one of the important concepts that is considered in the relationships between members of a supply chain. The purpose of this study was to investigate the effect of power in supply chain members’ relationships on financial performance of building companies in Semnan. Trust, commitment and strategic performance are also used as mediator variables.This applied research method is descriptive. The research population is the managers of construction companies in Semnan city. For this purpose, 140 questionnaires were collected from this community. The research hypotheses were studied using structural equation modeling. Results show that non-coercive power has a direct and significant impact on trust and commitment in relations between members of the supply chain. If the coercive power has a reciprocal and significant effect on trust. The direct and significant effects of trust on commitment and financial performance and strategic performance have been confirmed. Commitment has a direct and significant effect on strategic performance and financial performance and the direct and significant impact of strategic performance on financial performance has also been confirmed.
Masoud Fazli; Ali Fallah; Amir KHakbaz
Abstract
Nowadays, risk management is a good way to deal with the risks that may occur in a project. In risk response analysis, risks are often assumed to be interdependent. In fact, the risks affect each other in project. Implementing and managing various projects, including construction projects, has a lot ...
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Nowadays, risk management is a good way to deal with the risks that may occur in a project. In risk response analysis, risks are often assumed to be interdependent. In fact, the risks affect each other in project. Implementing and managing various projects, including construction projects, has a lot of ambiguous cases. Such cases, called uncertainty, change the outcome sometimes better, and sometimes worse than anticipated. Complexity, challenge and uncertainty are more common in building projects with different interactions between the pillars inside and outside it. Therefore, in order to realize the quantitative and qualitative goals of these projects, it is necessary to use a framework for identifying risks, monitoring and controlling them in relation to the activities and complexity of their communications .In this article, first we consider a construction project and then, with experts' opinions and a brain storm meeting, we identified the risks involved, then, according to experts, we determined the strategy for each risk. Finally, we have used an optimal model for choosing risk response strategies with respect to the risks’ interdependence. The main finding through the analysis of the project is that the low attention or neglect of the interdependence of risk, reduces the expected utility and increases the implementation
