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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: SCIENTIA IRANICA
- نوع مقاله: Journal Article
- کلمات کلیدی: Iran,Disaster management,earthquakes,Emergency Response,Response framework,Earthquake loss mitigation
- چکیده:
- چکیده انگلیسی: Earthquake is common natural disaster in Iran, often accompanied by huge damages, losses and casualties. Therefore, focusing on earthquake response management, and improving its effectiveness is an important issue for the national disaster management organization. This paper proposes a framework to improve this process in Iran. The proposed framework attempts to coordinate governmental and non-governmental organizations involved in earthquake response. It also allows governments to systematize the obligations and responsibilities of these organizations, and mitigate the earthquake fatalities and casualties. Moreover, this study discusses the key considerations for implementing the proposed framework, and analyzes it for distinct scales of earthquake.
- انتشار مقاله: 18-02-1397
- نویسندگان: Mehdi Najafi,Sassan Eshghi,Kourosh Eshghi
- مشاهده
- جایگاه : پژوهشی
- مجله: SCIENTIA IRANICA
- نوع مقاله: Journal Article
- کلمات کلیدی: Iran,Disaster management,earthquakes,Emergency Response,Response framework,Earthquake loss mitigation
- چکیده:
- چکیده انگلیسی: Earthquake is common natural disaster in Iran, often accompanied by huge damages, losses and casualties. Therefore, focusing on earthquake response management, and improving its effectiveness is an important issue for the national disaster management organization. This paper proposes a framework to improve this process in Iran. The proposed framework attempts to coordinate governmental and non-governmental organizations involved in earthquake response. It also allows governments to systematize the obligations and responsibilities of these organizations, and mitigate the earthquake fatalities and casualties. Moreover, this study discusses the key considerations for implementing the proposed framework, and analyzes it for distinct scales of earthquake.
- انتشار مقاله: 18-02-1397
- نویسندگان: Mehdi Najafi,Sassan Eshghi,Kourosh Eshghi
- مشاهده
- جایگاه : پژوهشی
- مجله: Journal of Industrial and Systems Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: Fuzzy random variable,network flow programming,Er-expected value,chanceconstrained programming
- چکیده:
- چکیده انگلیسی: In this paper, a fuzzy random minimum cost flow problem is presented. In this problem, cost parameters and decision variables are fuzzy random variables and fuzzy numbers respectively. The object of the problem is to find optimal flows of a capacitated network. Then, two algorithms are developed to solve the problem based on Er-expected value of fuzzy random variables and chance-constrained programming. Furthermore, the results of two algorithms will be compared. An illustrative example is also provided to clarify the concept.
- انتشار مقاله: 23-12-1389
- نویسندگان: Javad Nematian,Kourosh Eshghi
- مشاهده
- جایگاه : پژوهشی
- مجله: Journal of Industrial and Systems Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: Game Theory,Supply Chain Coordination,Seller-Buyer Supply Chain,Supply Chain Contracts
- چکیده:
- چکیده انگلیسی: In this paper, seller-buyer supply chain coordination with general side-payment contracts is introduced to gain the maximum possible chain profit. In our model, the logistics costs for both buyer and seller are considered and the final demand is also supposed to be a decreasing function of the retail price. Since parties aim to maximize their individual profits, the contractual parameters are set in a way that these decisions become aligned with system optimal decisions. Therefore, a side payment contract is suggested in our model to assign the chain surplus profit to the chain members such that they have no intention to leave the coalition. Then, we change the contract into a quantity discount-like contract which makes the contract much easier to be implemented in a real situation. The model will also be extended to include two buyers and a single seller. Finally, by numerical analysis, we show that by using this kind of contract, a significant improvement in the chain members’ profits and the total chain revenue will be achieved.
- انتشار مقاله: 14-12-1388
- نویسندگان: Sina Masihabadi (1985-2011),Kourosh Eshghi
- مشاهده
- جایگاه : پژوهشی
- مجله: Journal of Industrial and Systems Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: Supply Chain Management,Logistics,Inventory,Integrated decision making
- چکیده:
- چکیده انگلیسی: In this research, we investigate a three-stage supply chain with one supplier, several manufacturers and multiple retailers where the supplier provides a common raw material to each manufacturer, who in turn uses a single stage production facility to convert it into final products that are delivered at fixed lot sizes to retailers. An integrated economic procurement, production, and delivery model is developed whose objective is to find the common production cycle length, production sequences of final products at manufacturers and delivery frequencies of final products to retailers minimizing the total costs of considered supply chain. We propose an analytical solution procedure and an efficient heuristic solution method. The proposed heuristic solution algorithm is able to find the optimal solutions for the small and medium problem instances and consequently it is very promising for solving the large-sized instances in a reasonable time.
- انتشار مقاله: 17-01-1387
- نویسندگان: Naser Nikandish,Kourosh Eshghi,S. Ali Torabi
- مشاهده