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    Mutual manufacturing service selection and routing problem considering customer clustering in Cloud manufacturing

    , Article Production and Manufacturing Research ; 2018 ; 21693277 (ISSN) Assari, M ; Delaram, J ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2018
    Abstract
    Considering the globalization concept, all companies around the world are able to communicate with each other, share their technologies, and eliminate their production incapability issues. To achieve this goal, Cloud manufacturing system has been proposed. One of the most important issues in Cloud manufacturing is service composition, in which composition of cloud services is determined to meet customer orders. This paper considers a single-product supply network over one period in Cloud manufacturing system with the goal of service composition optimization. The network is designed in a layered structure considering transportation and production services and customers can be classified in... 

    A novel model for optimisation of logistics and manufacturing operation service composition in Cloud manufacturing system focusing on cloud-entropy

    , Article International Journal of Production Research ; Volume 58, Issue 7 , 2020 , Pages 1987-2015 Aghamohammadzadeh, E ; Malek, M ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2020
    Abstract
    In recent years, economic globalisation and manufacturing resource globalisation as two key factors have driven enterprises to transform their business processes to survive in competitive environments. This transformation is challenging as manufacturing enterprises should maintain their support for their customers with high-quality products, lower cost, product customisation capabilities, and quick delivery. Moreover, globalisation has resulted in geographically distributed suppliers across the globe. This challenge will turn into a major research topic when paradigms like Cloud manufacturing are introduced. Cloud manufacturing is a new paradigm which provides ubiquitous, convenient,... 

    Configuration design in scalable reconfigurable manufacturing systems (RMS); a case of single-product flow line (SPFL)

    , Article International Journal of Production Research ; 2017 , Pages 1-23 ; 00207543 (ISSN) Moghaddam, S. K ; Houshmand, M ; Fatahi Valilai, O ; Sharif University of Technology
    2017
    Abstract
    The dynamic nature of today’s manufacturing industry, which is caused by the intense global competition and constant technological advancements, requires systems that are highly adaptive and responsive to demand fluctuations. Reconfigurable manufacturing systems (RMS) enable such responsiveness through their main characteristics. This paper addresses the problem of RMS configuration design, where the demand of a single product varies throughout its production life cycle, and the system configuration must change accordingly to satisfy the required demand with minimum cost. A two-phased method is developed to handle the primary system configuration design and the necessary system... 

    Configuration design in scalable reconfigurable manufacturing systems (RMS); a case of single-product flow line (SPFL)

    , Article International Journal of Production Research ; Volume 56, Issue 11 , 2018 , Pages 3932-3954 ; 00207543 (ISSN) Moghaddam, S. K ; Houshmand, M ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2018
    Abstract
    The dynamic nature of today’s manufacturing industry, which is caused by the intense global competition and constant technological advancements, requires systems that are highly adaptive and responsive to demand fluctuations. Reconfigurable manufacturing systems (RMS) enable such responsiveness through their main characteristics. This paper addresses the problem of RMS configuration design, where the demand of a single product varies throughout its production life cycle, and the system configuration must change accordingly to satisfy the required demand with minimum cost. A two-phased method is developed to handle the primary system configuration design and the necessary system... 

    Topology analysis of manufacturing service supply–demand hyper-network considering QoS properties in the cloud manufacturing system

    , Article Robotics and Computer-Integrated Manufacturing ; Volume 72 , 2021 ; 07365845 (ISSN) Rezapour Niari, M ; Eshgi, K ; Fatahi Valilai, O ; Sharif University of Technology
    Elsevier Ltd  2021
    Abstract
    Cloud Manufacturing (CMfg), a new manufacturing paradigm, enables an opportunity for manufacturing enterprises to respond to a wide variety of demands. The CMfg concept integrates the distributed resources and capacities in a shared economy, transfers them to the virtual manufacturing services with various quality of service (QoS) properties. These services are invoked to collaborate in producing customized demands with specific functional and non-functional properties. The operational perspective of the service-demand matching problem is considered more in the literature; however, it is a challenging problem in the CMfg ecosystem. This paper evaluates the service-demand matching problem... 

    Adaptive capacity management in cloud manufacturing hyper-network platform: Case of COVID-19 equipment production

    , Article International Journal of Management Science and Engineering Management ; Volume 17, Issue 4 , 2022 , Pages 239-258 ; 17509653 (ISSN) Rezapour Niari, M ; Eshghi, K ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2022
    Abstract
    Cloud Manufacturing (CMfg) is a service-oriented manufacturing (SOM) paradigm that provides a dynamic, scalable, and virtualized working ecosystem. The CMfg collaborative structure can be modeled as a hyper-network-based service-demand matching architecture. It is enriched with quality of service (QoS) characteristics to produce customized products in a stable and reliable network. This stability should be considered in the overall manufacturing network mechanism. This paper has provided adaptive strategies utilizing available resources and capacities to enhance the system’s stability and reliability against the unexpected events. The capabilities of the enhanced framework are utilized to... 

    Blockchain-Based architecture for a sustainable supply chain in cloud architecture

    , Article Sustainability (Switzerland) ; Volume 15, Issue 11 , 2023 ; 20711050 (ISSN) Radmanesh, S.-A ; Haji, A ; Fatahi Valilai, O ; Sharif University of Technology
    MDPI  2023
    Abstract
    Blockchain technology, as a well-known technology in financial spaces, has many advantages in non-financial industries and supply chains. Two of the main benefits of blockchain technology are smart contracts and distributed decision-making processes. These features can be especially useful in implementing Industry 4.0. Moreover, this technology can increase productivity in supply chains by enhancing transparency, reducing operational costs, and improving monitoring and supervision throughout the lifecycle of products. In this paper, we introduce a blockchain-based architecture for a supply chain in cloud architecture. This approach leads to the more efficient implementation of Industry 4.0... 

    Using cloud manufacturing to establish an ecosystem network for COVID-19 ventilator production

    , Article International Journal of Computer Integrated Manufacturing ; Volume 36, Issue 6 , 2023 , Pages 842-862 ; 0951192X (ISSN) Rezapour Niari, M ; Eshghi, K ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2023
    Abstract
    Cloud Manufacturing (CMfg) as a service-oriented manufacturing (SOM) paradigm promotes the paradigm of partnership and collaboration among the globally distributed resources. Like technology-based marketplaces, it can identify different suppliers, determine their available services, and assign them to the requested orders based on the service-demand matching mechanism. The dominant capabilities of the SOM as a service can provide a collaborative and flexible manufacturing network configuration. This paper has focused on developing a new CMfg architecture with a concentrating on collaborative concepts to elaborate the modular manufacturing through the virtual process. In this model, different... 

    An autonomous intelligent framework for optimal orientation detection in 3D printing

    , Article International Journal of Computer Integrated Manufacturing ; Volume 36, Issue 6 , 2023 , Pages 908-946 ; 0951192X (ISSN) Rezaei, M. R ; Houshmand, M ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2023
    Abstract
    By intense growth in the field of 3D printing, new opportunities for manufacturing firms and individuals have been created to benefit from the flexibility in production and personalized products. However, the need for human agents for additive process planning and control results in more operating costs and less agility in 3D printing. So, it is necessary to have autonomous mechanisms for fulfilling the additive process planning. This paper has benefited from the recent advancements of artificial intelligence to create a basis for an autonomous system which decides upon the build orientation of the shape, based on the previously encountered occurrences of parts which were similar to its... 

    Applications of axiomatic design theory in design for human safety in manufacturing systems: a literature review

    , Article MATEC Web of Conferences, 13 September 2017 through 15 September 2017 ; Volume 127 , 2017 ; 2261236X (ISSN) Sadeghi, L ; Houshmand, M ; Fatahi Valilai, O ; Slatineanu L ; Sharif University of Technology
    2017
    Abstract
    Design for Human Safety (DfHS) is an approach to integrate knowledge of human safety in the design process. DfHS is multi-disciplinary in its nature, requiring many kinds of information and knowledge. Number of DfHS studies tried to apply Axiomatic Design (AD) to achieve their aims. The purpose of this paper is to review the literature on application of AD in DfHS in manufacturing systems and to propose a roadmap for future DfHS works. This paper examines the number and type of publications dealing with this context. The review covers papers published between 1990 (when AD was introduced first) and 2017. It is based on a range of combinations of the following keywords: "Axiomatic design" and... 

    A utility-based matching mechanism for stable and optimal resource allocation in cloud manufacturing platforms using deferred acceptance algorithm

    , Article Journal of Manufacturing Systems ; Volume 60 , 2021 , Pages 569-584 ; 02786125 (ISSN) Delaram, J ; Houshamand, M ; Ashtiani, F ; Fatahi Valilai, O ; Sharif University of Technology
    Elsevier B.V  2021
    Abstract
    Cloud Manufacturing (CM) as a successful manufacturing business model and a major driver of Industry 4.0 has attracted a lot of attention in recent years. CM idea aims to streamline the on-demand provisioning of manufacturing resources and capabilities as services, providing end-users with flexible and scalable services accessible through global networks. This idea created many opportunities and challenges. One of the critical challenges is resource allocation, which determines who interacts with whom and how in the CM platform. The type of the platform is a determining factor for the selection of the appropriate resource allocation. To analyze the impact of the allocation on the utilities,... 

    Stable allocation of services in public cloud manufacturing platforms: A game theory view

    , Article 30th International Conference on Flexible Automation and Intelligent Manufacturing, FAIM 2021, 7 September 2021 through 10 September 2021 ; Volume 55, Issue C , 2021 , Pages 306-311 ; 23519789 (ISSN) Delaram, J ; Houshamnd, M ; Ashtiani, F ; Fatahi Valilai, O ; Sharif University of Technology
    Elsevier B.V  2021
    Abstract
    With unbounding the manufacturing resources and capabilities from shopfloors and being available as on-demand services for everyone who needs, the service allocation problem becomes critical. Despite of private Cloud Manufacturing platforms in which the service allocation problem is an optimization matching problem, in public Cloud Manufacturing platforms the service allocation problem is a matching game between manufacturing providers and consumers. This is a complex form of games that has two sides, one side is the players that has manufacturing resources and capabilities and the other side is the players who want to receives such services. In this paper, we present a matching game model... 

    Development of public cloud manufacturing markets: a mechanism design approach

    , Article International Journal of Systems Science: Operations and Logistics ; 2022 ; 23302674 (ISSN) Delaram, J ; Houshamand, M ; Ashtiani, F ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2022
    Abstract
    Online manufacturing markets are new emerging types of markets that are spreading in the shade of public Cloud Manufacturing. This paper introduces a public Cloud Manufacturing market and denotes its differences from a private one. Public Cloud Manufacturing enables service-oriented manufacturing models for everyone in society. The prosperity of such market is tied to appropriate matching between providers to consumers. This paper elaborates on a mechanism to prescribe an appropriate allocation between resources and demands in this public market. The mechanism exploits the VIKOR method to develop preference lists for providers and consumers, the method also is augmented by the Intuitionistic... 

    Multi-phase matching mechanism for stable and optimal resource allocation in cloud manufacturing platforms Using IF-VIKOR method and deferred acceptance algorithm

    , Article International Journal of Management Science and Engineering Management ; Volume 17, Issue 2 , 2022 , Pages 103-111 ; 17509653 (ISSN) Delaram, J ; Houshmand, M ; Ashtiani, F ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2022
    Abstract
    Public platforms are one of the most important Cloud Manufacturing modes. Public platforms enable an environment for manufacturers and demanders to freely and directly connect with each other. Exploiting the high potentials of public platforms depends on final matching. This paper has developed a multi-phase matching mechanism for stable and optimal resource allocation in public platform. The proposed mechanism grades the demanders using an intuitionistic fuzzy VIKOR method using three measures of quality, time, and sustainability. Then, the mechanism clusters the demanders based on these three measures; and finally, allocates the clusters using the Deferred Acceptance (DA) algorithm to the... 

    Development of public cloud manufacturing markets: a mechanism design approach

    , Article International Journal of Systems Science: Operations and Logistics ; 2023 , Volume 10, Issue 1 ; 23302674 (ISSN) Delaram, J ; Houshamand, M ; Ashtiani, F ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2023
    Abstract
    Online manufacturing markets are new emerging types of markets that are spreading in the shade of public Cloud Manufacturing. This paper introduces a public Cloud Manufacturing market and denotes its differences from a private one. Public Cloud Manufacturing enables service-oriented manufacturing models for everyone in society. The prosperity of such market is tied to appropriate matching between providers to consumers. This paper elaborates on a mechanism to prescribe an appropriate allocation between resources and demands in this public market. The mechanism exploits the VIKOR method to develop preference lists for providers and consumers, the method also is augmented by the Intuitionistic... 

    A production bounce-back approach in the Cloud manufacturing network: case study of COVID-19 pandemic

    , Article International Journal of Management Science and Engineering Management ; Volume 18, Issue 4 , 2023 , Pages 305-317 ; 17509653 (ISSN) Shahab, E ; Kazemisaboor, A ; Khaleghparast, S ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2023
    Abstract
    Industry 4.0 paradigm has enabled manufacturing systems with reformations for Cloud-based manufacturing business models. This reformation can create resilient structures as an inevitable opportunity for manufacturing supply networks. This is achieved by using service composition capabilities in Cloud manufacturing network which significantly enhances supply network performance when encountering disruptions. Focusing on redundancy as one of the most effective approaches to resiliency, a new model for manufacturing service composition is proposed. The model considers a minimum level of subentropy when responding to the demands at the process level while controlling the entropy overall at... 

    Configuration design of scalable reconfigurable manufacturing systems for part family

    , Article International Journal of Production Research ; 2019 ; 00207543 (ISSN) Moghaddam, S. K ; Houshmand, M ; Saitou, K ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2019
    Abstract
    Intense global competition, dynamic product variations, and rapid technological developments force manufacturing systems to adapt and respond quickly to various changes in the market. Such responsiveness could be achieved through new paradigms such as Reconfigurable manufacturing systems (RMS). In this paper, the problem of configuration design for a scalable reconfigurable RMS that produces different products of a part family is addressed. In order to handle demand fluctuations of products throughout their lifecycles with minimum cost, RMS configurations must change as well. Two different approaches are developed for addressing the system configuration design in different periods. Both... 

    Configuration design of scalable reconfigurable manufacturing systems for part family

    , Article International Journal of Production Research ; 2019 ; 00207543 (ISSN) Moghaddam, S. K ; Houshmand, M ; Saitou, K ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2019
    Abstract
    Intense global competition, dynamic product variations, and rapid technological developments force manufacturing systems to adapt and respond quickly to various changes in the market. Such responsiveness could be achieved through new paradigms such as Reconfigurable manufacturing systems (RMS). In this paper, the problem of configuration design for a scalable reconfigurable RMS that produces different products of a part family is addressed. In order to handle demand fluctuations of products throughout their lifecycles with minimum cost, RMS configurations must change as well. Two different approaches are developed for addressing the system configuration design in different periods. Both... 

    Configuration design of scalable reconfigurable manufacturing systems for part family

    , Article International Journal of Production Research ; Volume 58, Issue 10 , 2020 , Pages 2974-2996 Moghaddam, S. K ; Houshmand, M ; Saitou, K ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2020
    Abstract
    Intense global competition, dynamic product variations, and rapid technological developments force manufacturing systems to adapt and respond quickly to various changes in the market. Such responsiveness could be achieved through new paradigms such as Reconfigurable manufacturing systems (RMS). In this paper, the problem of configuration design for a scalable reconfigurable RMS that produces different products of a part family is addressed. In order to handle demand fluctuations of products throughout their lifecycles with minimum cost, RMS configurations must change as well. Two different approaches are developed for addressing the system configuration design in different periods. Both... 

    A Novel Reliability Model for Information Technology Web services

    , M.Sc. Thesis Sharif University of Technology (Author) ; Fatahi Valilai, Omid (Supervisor)
    Abstract
    The Internet is often used for communication-based applications such as online banking, stock trading, and shopping where service interruption is unacceptable. Thus, analysis of the impact of the failures of hardware, software, and related services’ performance quality of the service provided to users is of importance to designers and managers in these functions. In this study, we developed a strategy to the design of a dynamic combination of file servers with the aim of providing reliability and SLA. At first, we examine the reasons for the violation of service level in file host services and datacenters, and then we introduce the criteria to measure the violation of service level on the...