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    A novel solution for manufacturing interoperability fulfillment using interoperability service providers

    , Article 50th CIRP Conference on Manufacturing Systems, CIRP CMS 2017, 3 May 2017 through 5 May 2017 ; Volume 63 , 2017 , Pages 774-779 ; 22128271 (ISSN) Delaram, J ; Fatahi Valilai, O ; Sharif University of Technology
    Elsevier B.V  2017
    Abstract
    The cloud manufacturing paradigm has been known as one of the best solutions for today's competitive manufacturing environments. This paradigm insists on using a manufacturing service oriented approach for fulfilling the manufacturing enterprise resource management by the access to global availability of manufacturing services. The proposed service oriented approach covers a wide area of manufacturing resource management from infrastructures to platforms and applications. However, due to wide global distributions of manufacturing clouds, the service oriented architectures which are designed in the clouds cannot communicate with each other. This is mainly due to concentration of cloud... 

    An architectural view to computer integrated manufacturing systems based onaxiomatic design theory

    , Article Computers in Industry ; Volume 100 , 2018 , Pages 96-114 ; 01663615 (ISSN) Delaram, J ; Fatahi Valilai, O ; Sharif University of Technology
    Abstract
    The emergence of the globalization paradigm in manufacturing industry has changed the markets’ circumstances, and accordingly manufacturing systems need to be compatibilized with these situations. There are many solutions to assist manufacturing systems for this purpose. Computerized systems and their related solutions were being the most attractive ones for manufacturing systems in recent decade. Developing such systems and exploiting from the advantages of such solutions requires a consistent foundation. Computer Integrated Manufacturing (CIM) emerged as a philosophy to provide such foundation, and to assist the computerized manufacturing solutions. Despite of the high potentials of the... 

    Process-oriented perspective in structure dynamics: A novel way to enhance ERP systems

    , Article 7th International Conference on Industrial Technology and Management, ICITM 2018, 7 March 2018 through 9 March 2018 ; Volume 2018-January , 2018 , Pages 350-354 ; 9781538613290 (ISBN) Khaleghparast, S ; Fatahi Valilai, O ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2018
    Abstract
    Fulfilment of the underlying structure within an indivisible system which leads to a specific pattern of behaviour was previously addressed by prominent approaches. However, there was a considerable lack for proposal of a proper idea that considers the susceptibility of structures to change with time through other adjacent structures. Considering such a point of view necessitates an alternative approach to functional perspective. Thus, a process-oriented architectural decomposition of a simplified organization structure embedded in a supply chain is applied to analyse the structure dynamics. This novel perspective to dynamic multi-structure systems is introduced in this research and the... 

    A novel cloud manufacturing service composition platform enabled by Blockchain technology

    , Article International Journal of Production Research ; Volume 58, Issue 17 , 2020 , Pages 5280-5298 Aghamohammadzadeh, E ; Fatahi Valilai, O ; Sharif University of Technology
    Taylor and Francis Ltd  2020
    Abstract
    In the near future, manufacturing industries will be mostly recognised with characteristics like IoT, and massive data transactions. To fulfil these characteristics, paradigms like Cloud manufacturing, Industry 4.0 and smart factory have passed their preliminary steps to become the primary inspirations. Considering the nature of Cloud manufacturing which consists of a vast number of service providers and Service demanders being introduced to the manufacturing cloud, service composition problem is introduced. However, there is a big challenge for fulfilling the dynamic behaviour of parameters which change rapidly over time in the service composition problem. This paper challenges the... 

    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
    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... 

    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,... 

    Flexible flow line scheduling considering machine eligibility in a digital dental laboratory

    , Article International Journal of Production Research ; Volume 58, Issue 21 , 2020 , Pages 6513-6531 Valizadeh, S ; Fatahi Valilai, O ; Houshmand, M ; Sharif University of Technology
    Taylor and Francis Ltd  2020
    Abstract
    Introduction of digital solutions has made dentistry more efficient and effective in response to patients’ demands. Moreover, digital solution helps participants to manage daily workflow simpler than traditional practices. Scanners, CAD/CAM software, CNC machines and 3D printers are components of digital solutions in current dentistry. Responding to patients as quickly as possible is essential in medical fields and dentistry has similar situations. On the other hand, demands in dentistry are highly customized that it makes managing orders more difficult because each order needs special design and production. Thus, this paper assesses orders in digital dentistry and develops a mathematical... 

    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... 

    Allocation and scheduling of digital dentistry services in a dental cloud manufacturing system

    , Article International Journal of Computer Integrated Manufacturing ; Volume 35, Issue 6 , 2022 , Pages 645-661 ; 0951192X (ISSN) Valizadeh, S ; Fatahi Valilai, O ; Houshmand, M ; Sharif University of Technology
    Taylor and Francis Ltd  2022
    Abstract
    Recent enhancements in computer aided design and manufacturing have made dentistry workflow more effective. Dental products are highly customized and personalized for patients. So, they require manufacturing processes for flexibility and agility and fulfilling requirements like quality, delivery time and cost. Various types of scanners, design software and production devices are used by stakeholders in digital dentistry. Also, other stakeholders such as dentists, dental surgeons and lab technicians work together to respond to patient demands to produce the required products while they are distributed in different geographical locations. This paper introduces a new practical and... 

    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
    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 novel digital dentistry platform based on cloud manufacturing paradigm

    , Article International Journal of Computer Integrated Manufacturing ; Volume 32, Issue 11 , 2019 , Pages 1024-1042 ; 0951192X (ISSN) Valizadeh, S ; Fatahi Valilai, O ; Houshmand, M ; Vasegh, Z ; Sharif University of Technology
    Taylor and Francis Ltd  2019
    Abstract
    Dentistry technology has been developed drastically during past two decades and the application of software and automated digital equipment have been proposed to have the most influence. Digital dental workflow includes four phases: scan, design, production planning and production which in each of the phases, the various software packages and digital devices are required. In addition, workflow in dentistry requires intensive cooperation among dentists, dental laboratories, technicians, imaging and production centres. This paper has developed anovel platform for digital dentistry, which facilitates the interoperability among different digital components and improves digital workflow in... 

    A multi-agent framework for virtual production system considering global manufacturing paradigm

    , Article 15th Iran International Industrial Engineering Conference, IIIEC 2019, 23 January 2019 through 24 January 2019 ; 2019 , Pages 253-259 ; 9781728117751 (ISBN) Rezaei, M. R ; Khalilpour Darzi, M. R ; Fatahi Valilai, O ; Shakhsi Niaei M ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2019
    Abstract
    In this paper a web based production system is proposed. This system consists of a web services agent to manage the receipt the order from the customer, a price agent to predict the price of the product for the customer, a decision agent to build up a virtual enterprise to manufacture and deliver of the product to the customer and make essential decisions of the system and a design and control agent to do the engineering tasks related to the production process of the product. This structure provides the production system with a high level of agility and flexibility. © 2019 IEEE  

    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 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...