We consider a capacitated facility location problem (CFLP) which contains a production facility and distribution centers (DCs) supplying retailers' demand. The primary purpose is to locate distribution centres in the network and the objective is the minimization of the sum of fixed facility location, pipeline inventory, safety stock and lost sales. We use Greedy randomized adaptive search procedures (GRASP) to solve the model. The preliminary results indicate that the proposed method of this paper could provide competitive results in reasonable amount time.
Growing Science » Countries » Iran
2101. 
A GRASP model in network design for two-stage supply chain Pages 203-212
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Authors: Hassan Javanshir, Mahdis Haghighi Ghashti
DOI: 10.5267/j.msl.2010.02.003
Keywords: GRASP, Inventory lost, Lead time, Network design, Safety stock
Abstract:
Journal: MSL | Year: 2011 | Volume: 1 | Issue: 2 | Views: 2108 | Reviews: 0
2102.
A robust LINMAP for EFQM self assessment Pages 213-222
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Authors: Sepideh Rasouli, Mohsen Gharakhani, Masoud Babakhani
Keywords: EFQM, Linear Programming, LINMAP, Preference Analysis, Robust Decision Making, Robust Optimization
Abstract:
During the past two decades, there have been tremendous efforts on developing efficient
business excellence models to improve the quality of organizations. A typical business
excellence model proposes several alternatives with different budget and the primary objective
is to use the best ones. In this paper, we present a robust LINMAP method for measuring the
relative importance of various alternatives in an EFQM self assessment. The presented robust
model is capable of handling uncertainty as part of the problem formulation. The proposed
model of this paper is implemented for a case-study of energy sector in Iran with various
alternatives. The orderings of the alternatives are measured using data from multiple experts
through applying the proposed model of this paper.
business excellence models to improve the quality of organizations. A typical business
excellence model proposes several alternatives with different budget and the primary objective
is to use the best ones. In this paper, we present a robust LINMAP method for measuring the
relative importance of various alternatives in an EFQM self assessment. The presented robust
model is capable of handling uncertainty as part of the problem formulation. The proposed
model of this paper is implemented for a case-study of energy sector in Iran with various
alternatives. The orderings of the alternatives are measured using data from multiple experts
through applying the proposed model of this paper.
Journal: MSL | Year: 2011 | Volume: 1 | Issue: 2 | Views: 1662 | Reviews: 0
2103.
An empirical study to determine the critical success factors on customer retention: A case study of Iranian banking sector Pages 223-234
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Authors: Sadollah Ebrahim Nezhad, Neda Jomehri, Hassan Javanshir
DOI: 10.5267/j.msl.2010.02.002
Keywords: Banking industry, Customer loyalty, Customer retention, Customer satisfaction, Customer value
Abstract:
One of the most important strategic issues for any enterprise is to create
and deliver superior value for its customers and provide enough
evidences to convince them not to choose another competitive. In this
study, we study the effects of customer value, customer satisfaction and
customer loyalty on customer retention. The results indicate that all
aspects of the customer value have positive relationships with customer
satisfaction but only emotional value has a positive and direct
relationship with customer loyalty. The study confirms that while none
of customer value aspects has direct and positive relationship with
customer retention, both customer satisfaction and customer loyalty
positively and directly affect customer retention.
and deliver superior value for its customers and provide enough
evidences to convince them not to choose another competitive. In this
study, we study the effects of customer value, customer satisfaction and
customer loyalty on customer retention. The results indicate that all
aspects of the customer value have positive relationships with customer
satisfaction but only emotional value has a positive and direct
relationship with customer loyalty. The study confirms that while none
of customer value aspects has direct and positive relationship with
customer retention, both customer satisfaction and customer loyalty
positively and directly affect customer retention.
Journal: MSL | Year: 2011 | Volume: 1 | Issue: 2 | Views: 2228 | Reviews: 0
2104.
A survey on the effect of global warming in Canada Pages 1-4
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Authors: Maryam Orouji, Mahdi Karimi
Keywords: Global warming, Climate change, Canada, flood, Renewable energies
Abstract:
During the past four decades, there have been tremendous changes on earth due to climate change. Humankind has increasingly used fossil fuels such as coal, oil, etc. and increased the green gas effect on this planet. Nowadays, most scientists believe there must be some actions to prevent global warming to rescue the next generation from the irreversible consequences of climate change. This paper studies the recent studies on the effects of global warming in Canada. The study reviews the recent efforts on the effects of global warming on forests, lakes, etc.
Journal: JFS | Year: 2021 | Volume: 1 | Issue: 1 | Views: 706 | Reviews: 0
2105.
Social media in Canada Pages 1-4
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Authors: Maryam Orouji, Mahdi Karimi
DOI: 10.5267/j.ijdns.2017.1.001
Keywords: Social network, Social media, Canada
Abstract:
During the past few years, there have been tremendous changes on social media through different applications in Canada. Many people choose their products and services solely based on the tips they receive from various social media such as Facebook, Twitter, etc. Social media are ex-periencing an increase popularity, both among the ordinary people who simply use the facilitated interaction, and businessman who observe it as a serious marketing facility. In this paper, we study the trend and usage of social media for different purposes in Canadian society. The survey indicates that Facebook has been the most popular followed by Twitter and LinkedIn. The study also indicates that social media are used for many purposes such as reaching update news, recommending products or services, recruiting employees, etc.
Journal: IJDS | Year: 2017 | Volume: 1 | Issue: 1 | Views: 1910 | Reviews: 0
2106.
Measuring the relative efficiency of project management using data envelopment analysis Pages 1-6
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Authors: Sara Orouji
Keywords: DEA, Project management, Efficiency
Abstract:
Measuring the relative efficiency of similar units has been an open research for years. Data en-velopment analysis (DEA) has been widely used among researchers for efficiency measurement. DEA uses different inputs/outputs to measure the relative efficiency of one unit compared with other similar units. This paper presents a comprehensive review on recent applications of DEA techniques on measuring the relative efficiency of project management units. The study covers the implementation of DEA method for measuring the relative efficiency of enterprise resources planning, research and development and construction projects.
Journal: JPM | Year: 2016 | Volume: 1 | Issue: 1 | Views: 1925 | Reviews: 0
2107.
Impact damage simulation in elastic and viscoelastic media Pages 1-8
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Authors: Seyed Mohammad Navid Ghoreishi, Seyed Majid Pourhosseini Pourhosseini
DOI: 10.5267/j.esm.2013.07.001
Keywords: Elastic material, Viscoelastic material, Impact, Damage, Composite, Finite element analysis
Abstract:
Collide of two objects or impact, is one of the main damage initiation reasons. In this paper, impact and damage behavior of elastic and visco-elastic bodies are investigated numerically using the finite element analyses. The results showed that visco-elastic materials, distribute stresses to the edge of model after the impact with a solid body. Furthermore, the impact of elastic and visco-elastic composite materials are analyzed and the variations of stress, displacement, damage energy and the damage patterns during a time period are compared for the two material models. The reduction in the values of stress, displacement and damage energy of visco-elastic material is also determined relative to the elastic composite material.
Journal: ESM | Year: 2013 | Volume: 1 | Issue: 1 | Views: 2357 | Reviews: 0
2108.
Supply chain network optimization: A review of classification, models, solution techniques and future research Pages 1-24
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Authors: Niki Matinrad, Emad Roghanian, Zarifeh Rasi
DOI: 10.5267/j.uscm.2013.05.003
Keywords: Supply chain, Network, Optimization, Survey
Abstract:
With an ongoing progress in industries and technologies, most firms and businesses highly depend on cooperation and collaborations within a supply chain. In today’s competitive business environment, customer satisfaction plays an important role for the business survival. These matters can be secured by “supply chain”, a chain consists of various companies working together to maintain customers’ satisfaction. If various stages of different chains cooperate with each other, “supply chain network” (SCN) will be the outcome. In order to have a supply chain network or just a supply chain-operation in its best possible way, some optimization techniques are needed. In this paper, we present a close look at previous studies in the field of SCN optimization techniques and classify them based on the relative important characteristics.
Journal: USCM | Year: 2013 | Volume: 1 | Issue: 1 | Views: 7520 | Reviews: 0
2109.
Huff-type competitive facility location model with foresight in a discrete space Pages 1-12
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Authors: Milad Gorji Ashtiani, Ahmad Makui, Reza Ramezanian
DOI: 10.5267/j.msl.2010.01.0010
Keywords: Competitive location, Leader-follower, Discrete space, Huff-type model, Inelastic Demand
Abstract:
Consider a chain as leader that wants to open p new facilities in a linear market, like metro. In this market, there is a competitor, called follower. The leader and the follower have established some facilities in advance. When the leader opens p new facilities, its competitor, follower, reacts the leader’s action and opens r new facilities. The optimal locations for leader and follower are chosen among predefined potential locations. Demand is considered as demand points and is assumed inelastic. Considering huff model, demand points are probabilistically absorbed by all facilities. The leader’s objective is maximization of its market share after opening follower’s new facilities. For solving leader problem, first the follower’s problem is solved for all leader’s potential locations and the best location for leader is obtained and then, a heuristic model is proposed for leader problem when the leader and the follower want to open one new facility. Computational results show that the proposed method is efficient for large scale problems.
Journal: MSL | Year: 2011 | Volume: 1 | Issue: 1 | Views: 4535 | Reviews: 0
2110.
A discrete firefly meta-heuristic with local search for makespan minimization in permutation flow shop scheduling problems Pages 1-10
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Authors: Mohammad Kazem Sayadi, Reza Ramezanian, Nader Ghaffari-Nasab
DOI: 10.5267/j.ijiec.2010.01.001
Keywords: Meta-heuristic, Firefly meta-heuristic, Ant colony, Permutation flow shop, Scheduling, Combinatorial optimization, Mixed integer programming
Abstract:
During the past two decades, there have been increasing interests on permutation flow shop with different types of objective functions such as minimizing the makespan, the weighted mean flow-time etc. The permutation flow shop is formulated as a mixed integer programming and it is classified as NP-Hard problem. Therefore, a direct solution is not available and meta-heuristic approaches need to be used to find the near-optimal solutions. In this paper, we present a new discrete firefly meta-heuristic to minimize the makespan for the permutation flow shop scheduling problem. The results of implementation of the proposed method are compared with other existing ant colony optimization technique. The preliminary results indicate that the new proposed method performs better than the ant colony for some well known benchmark problems.
Journal: IJIEC | Year: 2010 | Volume: 1 | Issue: 1 | Views: 10103 | Reviews: 0