Ali Atashsooz; Kamran Feizi; Abolfazl Kazazi; Laya Olfat
Abstract
In a complex and volatile environment of the supply chain, any attempt to reduce the risks may increase or decrease other risks; thus, achieving an overall picture of the risks of supply chain and relationships between them are necessary and will lead to more effective and comprehensive strategy to response ...
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In a complex and volatile environment of the supply chain, any attempt to reduce the risks may increase or decrease other risks; thus, achieving an overall picture of the risks of supply chain and relationships between them are necessary and will lead to more effective and comprehensive strategy to response to risks. The purpose of this paper is identifying and extracting the potential risks of supply chain using interpretive structural modeling (ISM) approach. In order to do that, first an in-depth litreture review has done and Delphi method with content validity has used, and then, the ISM model, representing the structure of risks relationship has extract. The results show that the external environment supply chain risks (natural risks, political/social, policy and macroeconomic), at a low levels of the model, have the most impact on other risks and are as a emerging and or increasing factor for industrial environment (market and product competition; market inputs, communications and collaboration) and organizational environment risks (operational, financial, strategic, commitment and organizational culture and employee).
Yalda Yahyazade; Laya Olfat; Maghsod Amiri
Abstract
Appropriate management of supply chain is one of the issues facing economic firms that affect all the organizational activities in order to produce the goods and provide the services. Consequently Supplier selection due to involvement of various qualitative and quantitative criteria such as quality, ...
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Appropriate management of supply chain is one of the issues facing economic firms that affect all the organizational activities in order to produce the goods and provide the services. Consequently Supplier selection due to involvement of various qualitative and quantitative criteria such as quality, price, flexibility and delivery times is very difficult and complex and requires accurate and appropriate tools. On the other hand today's competitive environment due to its variable nature, has added the uncertainty and ambiguity in decision-making. The problem of supplier selection is not an exception as well and it seems suitable to use the robust optimization methods in such circumstances. The mentioned method is used in this research with the goal of supplier selecting and determining the amount order of products considering all restrictions in order to minimize the costs and maximize the utility of purchase in the condition of uncertainty. In this paper, a multi-objective deterministic model is presented to solve the problem, and then the deterministic model is converted to the robust model using the scenario-based robust method and then is solved using the LP metric method so optimal amount of order is obtained from each of suppliers at any period. To determine the weight of each of suppliers, Analytical Hierarchy Process (AHP) is used as well.
Laya Olfat; Mohammad Reza Sadeghi
Volume 8, Issue 21 , June 2011, , Pages 63-83
Abstract
Nowadays, inventory management has a significant importance in supply chain. In supply chain management literature, inventory control and minimizing inventory-related cost are a main challenges confronting the managers. One of the issues attracting the attention of most researchers is determining the ...
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Nowadays, inventory management has a significant importance in supply chain. In supply chain management literature, inventory control and minimizing inventory-related cost are a main challenges confronting the managers. One of the issues attracting the attention of most researchers is determining the level of safety stock in such a way that enables us to reach appropriate fill rate. In this paper, a non-linear model to determine the level of safety stock in different components of supply chain is presented with the aim of minimizing the safety stock-related cost.
Laya Olfat; Farzaneh Khosravani; Reza Jalali
Volume 8, Issue 19 , December 2010, , Pages 147-163
Abstract
Risk is a potential which causes problems in the implementation of project and fulfillment of objectives. Risk is the innate part of all the projects and it is impossible to eliminate it completely though it can be managed effectively in order to reduce its effects on achieving the project’s objectives. ...
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Risk is a potential which causes problems in the implementation of project and fulfillment of objectives. Risk is the innate part of all the projects and it is impossible to eliminate it completely though it can be managed effectively in order to reduce its effects on achieving the project’s objectives. It may occur in the future or not, but its occurrence at least affects one objective including area, time, costs or quality. Therefore identification, analysis and ranking of risk would play a significant role in the fulfillment of project. In this paper, we applied PMBOK Standard for identification of project risk for the construction of flyover junctions in Boushehr Province, and then we used Fuzzy AIIP Technique and Fuzzy TOPSIS Technique for ranking of risk.
Laya Olfat; Seyyed Mahmood Zanjirch
Volume 3, Issue 11 , December 2005, , Pages 37-61
Abstract
Agile manufacturing as the most modern production system has covered significant portion of literature in operations management. But there is a great vague. whether agile manufacturing is the same as prior concepts but in a new form or it's ...
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Agile manufacturing as the most modern production system has covered significant portion of literature in operations management. But there is a great vague. whether agile manufacturing is the same as prior concepts but in a new form or it's a completely new concept accompanied with necessary techniques? Lean production and Agile production are two dominant production systems that were studied through literature survey and their dimensions were defined. Then dimensions similarities and differences among these two approaches were investigated. Finally considering the importance of different dimensions, weighted difference between them is demonstrated. Results show that although there are some common features between these two concepts, their emphasis on different aspects has formed a new approach. The proper attention of agile system to nowadays business requirements and continuous change, has distinguished it from other production systems such as lean production system.
Laya Olfat; Hassan Hashemi
Volume 1, Issue 2 , October 2003, , Pages 55-82
Abstract
The prime objectives of Project Management are to minimize time and cost and to meet required performance. Value Engineering is an organized effort to attain optimum value in a system by providing the necessary functions to improve performance at the lowest cost. Value Engineering can contribute to the ...
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The prime objectives of Project Management are to minimize time and cost and to meet required performance. Value Engineering is an organized effort to attain optimum value in a system by providing the necessary functions to improve performance at the lowest cost. Value Engineering can contribute to the field of project management to achieve its objectives.
This paper explains a model of service project management with the aid of value Engineering.
