supply chain management
fateme khanzadi; Reza Radfar; nazanini pilevari salmasi
Abstract
Nowdays, supply chain specialists are looking for the integrated development of the supply chain model in order to increase the competitiveness, effectiveness and reduce the problems in the supply chain. They always seek to identify and develop this process so that they can cover more aspects of the ...
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Nowdays, supply chain specialists are looking for the integrated development of the supply chain model in order to increase the competitiveness, effectiveness and reduce the problems in the supply chain. They always seek to identify and develop this process so that they can cover more aspects of the chain. Adding effectiveness indicators along with LARG indicators and using the basics of the dynamic system to improve the efficiency of the supply chain is one of the innovations of this study. At first, by using research literature and studies, 12 headings of indicators were selected as LARG-E indicators. Then, with the Fuzzy Delphi method, the relationships and importance of each of these components were determined, and more important variables were modeled for further investigation. With using the concepts of dynamic systems, causal loops were drawn. Then, to check the function of the model, dynamic hypotheses were developed with the opinion of experts. In the next step, the flow diagram of the model and also the validation tests of the proposed model were done. Finally, by examining the outputs obtained from the proposed scenarios, it was found that most of variables have better behavior in LARG-E approach.IntroductionIn recent years, with the addition of various competitions in the world markets, many researches have been conducted to use new technologies and researches in order to improve the production process and increase the effectiveness of these competitions as much as possible (Mohghar et al., 2017). All the goals that work in this field increase the competitiveness of the organization. This competition is by reducing costs, being present in the market and satisfying the customer. To increase profits, protect the environment, keep the markets stable and meet the expectations of customers, organizations should be provided using the existing environments in a set of customers (Pisha et al., 2016). Use chain management requires the use of new facilities and improvements to previous findings such as lean, agile, resilience and green to increase speed and competitiveness, selection and decision-making to achieve the organization and maximum effectiveness.Today, supply chain specialists are looking for the integrated development of the supply chain model to increase the effectiveness and efficiency of the supply chain in order to increase competitiveness and reduce supply chain problems. In this case, there is a consensus among experts that there is no comprehensive model. All the mentioned cases make it inevitable to design a comprehensive and effective model for the supply chain. The verifiable issue is the conflicts and the non-alignment of all the indicators of the paradigms with each other. LARG paradigms, without considering the spirit of effectiveness in each supply chain, cannot fully protect it against continuous changes in the competitive market arena. A comprehensive model that pays particular attention to effectiveness while implementing LARG paradigms has not been examined in the literature review and the consensus of experts. Therefore, in this research, we are looking to design a comprehensive model in a LARG-effective manner so that the effect of various LARG-effective indicators on the performance of the supply chain can be investigated. The integration of LARG paradigms has been studied a lot so far, but its development is based on the concepts of innovation effectiveness of this research, and in this way, the dynamic system approach was used.Materials and MethodsTo formulate a LARG supply chain, first the framework, indicators and variables of each LARG paradigm were extracted from the research literature, then in order to develop them with effective concepts, the effective supply chain was studied. In order to implement the fuzzy Delphi approach, based on the effectiveness indicators extracted from the subject literature and LARG supply chain approaches, operational indicators were provided to the experts participating in the research in the form of a questionnaire via email and after initial coordination. After collecting the completed questionnaires, fuzzification operations, fuzzy averaging and then de-fuzzification were performed. The results were brought to the attention of the participants and they were asked to apply their desired changes according to the obtained results. This approach reached the saturation stage in the third round and there was no change in the opinions of the participants and the consensus of the panel experts was the final and trusted output of the Delphi method. Finally, according to these weights, 9 quantitative variables had the highest importance and were used for dynamic modeling. The simulation stage is done with the help of software and Nasim. According to the features of modeling based on system dynamics, this approach was chosen as the main research tool in this study because there are linear relationships between the variables and there are nested feedbacks between the variables of the subsystems, the importance of simultaneously improving the performance in different layers of the producer, supplier and distributor. Which is one of the goals of this research, with this approach, it can be a very suitable tool for decision-making by the senior managers of the organization.Discussion and ResultsOrganizations are trying to improve their competitiveness by adopting Lean, Resilient, Green and Agile strategies; But as it was said, the implementation of these paradigms, which sometimes have conflicting results, requires a new integration and index to align the goals. So far, many researches have been done by merging two or more paradigms, the combination of all 4 paradigms called LARG has greatly helped to improve the performance of supply chains, but in this research, in order to improve the conflicts between paradigms, a new concept of spiritual effectiveness was given to the supply chain. Understanding the dynamics of applying the above four strategies and their effectiveness was done using the dynamic systems approach. In this research, the indicators of the LARG supply chain were defined based on theoretical foundations and interviews with experts; then the effectiveness indicators were placed next to them. These indicators were implemented in the printing and ink industry. In this way, an effective LARG integrated system was defined; then, using a dynamic model, dynamic hypotheses were first defined and state and flow diagrams were drawn. After correctness of the model and validation of the model, two scenarios were examined for 8 important variables. After applying the scenarios, the performance of LARG and effective LARG was compared. By applying each scenario in the designed model, it was possible to check the effect of new indicators on the variables and their behavior.ConclusionsAs a result, if the components of the effective supply chain are properly integrated with the LARG concepts, they integrate the conflict that may exist between the LARG paradigms and play the role of synchronization and improvement as a ruler and standard. The effective management of the LARG supply chain may not be defined as an independent variable, but it is a result of variables and indicators that improved performance in most cases.
modeling and simulation
Mohammad Reza Atefi; Reza Radfar; Ezzatollah Asgharizadeh
Abstract
Purpose – Organization managers tend to use an optimal and precise method to evaluate the performance of their organization by understanding the organization dynamics. The immediate research goal was to propose a dynamic model for the performance evaluation of a LARG supply chain with the balanced ...
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Purpose – Organization managers tend to use an optimal and precise method to evaluate the performance of their organization by understanding the organization dynamics. The immediate research goal was to propose a dynamic model for the performance evaluation of a LARG supply chain with the balanced scorecard (BSC) approach. Design/methodology/approach – In this study, dynamic simulations are carried out for the performance evaluation of a supply chain. At first, a strategy map was designed, and measures are identified for each strategic objective considering the LARG supply chain measures. Afterward, a quantitative dynamic model was designed to identify the mathematical relationships among them. Findings – The proposed model is implemented in a company operating in the automotive industry. Based on the company’s strategic objectives, scenarios were designed and analyzed to evaluate the performance of the LARG supply chain with the balanced scorecard approach. Research limitations/implications – The BSC- based LARG supply chain evaluation has been studied for the auto part manufacturer sector. The different industry may lead to different results as the model designed important in each sector may differ as well as how each model is designed.Originality/value – The dynamic model enables managers to identify the determinants of the supply chain performance and set the scene for the necessary decisions by analyzing the possible scenarios in advance.
supply chain management
Mohammad ali Enayati shiraz; Seyed Abdollah Heydariyeh; Mohammad Ali Afshar kazemi
Abstract
Supply chain management can lead to a sustainable competitive advantage. The present study is in search of paper industry supply chain strategies with respect to supply chain dynamics and lean supply chain using dynamics in order to gain a competitive advantage in Iran Wood and Paper Industries Company ...
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Supply chain management can lead to a sustainable competitive advantage. The present study is in search of paper industry supply chain strategies with respect to supply chain dynamics and lean supply chain using dynamics in order to gain a competitive advantage in Iran Wood and Paper Industries Company (Chooka). For this purpose, first, using organizational data and decision makers' participation, the system dynamics model was designed and after validation, the model was simulated in a ten-year horizon. According to the behavior of target variables and model sensitivity analysis in the simulation horizon, policies in line with lean supply chain strategy and sustainable profitability strategy of Chooka business were designed and applied separately and in combination to the model. And analyzed. According to the findings of the model simulation, productivity promotion policies through the use of lean methods in internal processes, increasing the quality of paper products, increasing innovation in the production and supply of paper products, improving raw material supply management And strategic partnership with suppliers of raw materials, industrial waste management, waste and solid waste management and staff empowerment have been presented as the best combined policies of the supply chain strategy of Iran's wood and paper industries.
modeling and simulation
Navid Nadimi; Abbas Toloei Eshlaghy; Mohammad Ali Afshar kazemi
Abstract
With the tremendous progress in communications in the world, the transformation andbehavior of mobile operators and their digitalization, which in the past were onlyservice providers, as well as the creation of different experiences for customers, isinevitable.The purpose of this study is to create a ...
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With the tremendous progress in communications in the world, the transformation andbehavior of mobile operators and their digitalization, which in the past were onlyservice providers, as well as the creation of different experiences for customers, isinevitable.The purpose of this study is to create a hybrid simulation of systemdynamics and agent based model in order to analyze the revenue of the first operator inthe country to enter the field of digital platform and development of nativeapplications. Using the model proposed, first operators need to enter the digital areaand produce native applications was expressed. Then, the factors that affect the mobileecosystem which, affect the production of applications and the development ofrequired platforms were described. By utilizing hybrid simulation of system dynamicsand agent based modeling, the income of mobile operator in entering and not enteringthe digital arena and producing native applications were examined. The results showthat with the entry of the operator into the field of production of native applicationsand the adoption of digital approach, consumers tended to use more data services, butdue to different tariffs for data and voice, the operator's income up to 2 Next years willnot change much.
Ebrahim Alimohammadi As; Alireza Bafandeh Zendeh; Houshang Taghizadeh
Abstract
The study aims to simulate the strategies of Islamic Azad University (Tabriz branch) during 2019- 2034 period through system dynamics approach. Based on research literature, student trend, physical resources, educational quality, human resources, research and publication and financial operation were ...
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The study aims to simulate the strategies of Islamic Azad University (Tabriz branch) during 2019- 2034 period through system dynamics approach. Based on research literature, student trend, physical resources, educational quality, human resources, research and publication and financial operation were considered as key effective variables in formulating the strategies. By using reliable theories in the field of problem-solving literature and experts' opinion, causal relations between variables have defined in the form of mathematical functions and finally simulated has been done. The scenarios were formulated and analyzed based on three main objectives, namely cost reduction, increase of revenue and educational quality development. Results show that by the implementation of downsizing scenario in Tabriz Azad University, the tuition rate of the university experienced a decrease of five percent. The second scenario show that if research budget experiences a change of 40%, non-fee revenues would grow 19%. The simulation of the third scenario revealed that, 25% increment of new investments in Tabriz Azad University leads to the growth of student attraction rate by 17% in long term. By considering results of three scenarios we could suggest that Tabriz Azad University should follow the two strategies of increasing research budget and making use of new investments.
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Abstract
Land and housing economy have a large proportion of the whole economy and play an important role in the cultural, economic and social community. In all parts of the world, land and houses make a large share of its assets and the proper management of these resources can help country’s economy grow. ...
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Land and housing economy have a large proportion of the whole economy and play an important role in the cultural, economic and social community. In all parts of the world, land and houses make a large share of its assets and the proper management of these resources can help country’s economy grow. The housing sector in Iran has faced many problems. Low purchasing power of costumers, price bubble especially in big cities, intense cycles in supply and demand and less on the market for mortgage or rent, more supply than demand and many unfinished projects are examples of problems in the field. In this paper, after explaining the current problems, causal loop diagram and then stock-flow model is presented. After validation of the model, the proposed policies are presented based on model structure and relationships. Presented policies reduce the severity of future cycles and improve equilibrium between supply and demand sectors and help linear and continuous presence of the buyer.
Tayebeh Abbasnejad; Reza Shafizadeh; Mohammad Ghafournia
Abstract
The companies for their growth and survival in competitive domains must develop new products; however, innovation required for this process is a risky and costly enterprise. Most of the scholars have considered the factors leading to success as static and they have not taken into account their dynamic ...
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The companies for their growth and survival in competitive domains must develop new products; however, innovation required for this process is a risky and costly enterprise. Most of the scholars have considered the factors leading to success as static and they have not taken into account their dynamic nature. Since the relationships among the influential factors which can lead to the success of developing new products have various dynamics and feedbacks, tools for the identification of dynamics in such systems are among the most useful tools which can be used for investigative purposes in this domain. In the present study, which aimed at identifying and analyzing the dynamics of factors affecting the success of new product development, the key variables for the development of new products were identified based on the theoretical backgrounds and the ideas of experts in the industry and then the causal relationships among them were drawn. Subsequently, the mathematical relationships among these variables were determined based on the existing relationships among them in the literature and as a practical step the intended system was simulated in Nooshin Azar Food Company in the time span of 1384 to 1404. For improving the performance of the companies, policies like increased management support, more investment in research and development and improvement of product development planning were suggested and the results which can be derived by applying these scenarios were simulated as well.
Abstract
This paper addresses the issue of horizontal strategy formulation, an essential part of corporate-level strategy, based on sharing resources among businesses. Therefore, in this study, a model was developed to evaluate the opportunities for sharing resources among businesses in order to facilitate strategic ...
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This paper addresses the issue of horizontal strategy formulation, an essential part of corporate-level strategy, based on sharing resources among businesses. Therefore, in this study, a model was developed to evaluate the opportunities for sharing resources among businesses in order to facilitate strategic decision-making at the corporate-level. In line with the mentioned goal for designing a comprehensive model, literature was reviewed extensively and variables extracted from literature review and experience of industry experts were used to determine relationship between them in the form of dynamic approach leading to the creation of a dynamic model to evaluate sharing resources. This model includes affective factors on the process of sharing resources and their interaction that shows the dynamics of these factors over time. Model validity was done in the system dynamic approach via validation tests and computer simulations. Based on the obtained results, the validity of the model was confirmed for making decisions on resource sharing in multi-business firms.
Mahdi Bastan; Elaheh Abbasi; Alimohammad Ahamadvand; Reza Ramazani K
Abstract
Acceptance of new technology and developed products is one of the main interest of innovative organization’s managers. Service organizations create value for their customers through the development of new products and services and can earn profit from this. New products development lead to high ...
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Acceptance of new technology and developed products is one of the main interest of innovative organization’s managers. Service organizations create value for their customers through the development of new products and services and can earn profit from this. New products development lead to high R&D costs, and if the new products and services are not accepted by target customers, the expected profit will not be achieved. The purpose of the present research is to provide a deep insight about effective factors for mobile banks’ acceptance. Mobile-bank is an e-banking channel with the ability to earn income and profit as well as reduce the cost of operation for banks. So, understanding the effective factors as well as the dynamics in the process of acceptance and diffusion it by customers has importance for managers of banks. In this research, after reviewing the related literature about technology acceptance, and identifying the variables affecting the acceptance of mobile banking, a system dynamics model was presented which by representing the causal structure and simulation model, can analyze the dynamics of the acceptance process. The results of implementing the four scenarios were simulated and analyzed. The results show that the improvement of effective factors on the intention to use of customers is more effective than other policies, such as promotion advertising and development of new services and feature in the current mobile bank
Ali Saeedi; Javad Shabzendedar
Volume 8, Issue 21 , June 2011, , Pages 143-165
Abstract
Price bubble is a phenomenon in which the assets prices go up considerably. The research shows that bubbles have Non-Linea characteristic, and common methods of stock valuation such a Discounted cash flow models and relative models, usually are unable to evaluate stock values. Common and Non-Systemic ...
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Price bubble is a phenomenon in which the assets prices go up considerably. The research shows that bubbles have Non-Linea characteristic, and common methods of stock valuation such a Discounted cash flow models and relative models, usually are unable to evaluate stock values. Common and Non-Systemic approach ha linear and cascading perspective for considering phenomenon bi systemic approach has Non-Linear approach. In this research, stock prices bubble in auto industry is considered by systemic thinking and is modeled by system dynamics approach. Two influencing factors are tested in the paper: belief changes speed and block purchasing. Bot factors make the stock more volatile; so, the higher the speed and the larger the amount, the greater the stock volatility. Also, bloc transaction causes sentimental atmosphere among investors and pushes retail investors.
