• An introduction of small-scale intelligent manufacturing system 

      Huang, Taoying; Solvang, Wei Deng; Yu, Hao (Konferansebidrag; Conference object, 2016)
      Manufacturing companies in Northern Peripheral and Arctic region are predominately small and medium-sized and face considerable challenges like geographical isolation and a lack of benefits offered by industrial clusters. For the ultimate goal of enhancing their competitiveness in a global market, it is imperative for companies to innovate or adopt innovations in order to quickly response to changes ...
    • An Introduction of the Role of Virtual Technologies and Digital Twin in Industry 4.0 

      Azarian, Mohammad; Yu, Hao; Solvang, Wei Deng; Shu, Beibei (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-03)
      It is inevitable that technological improvements have affected human’s life in any aspect to a large extent. Automation, artificial intelligence, robotics, etc., are some advances contributed to the fourth industrial revolution: Industry 4.0. Despite there are still many arguments, Internet of Things (IoT) and Cyber Physical Systems (CPS) have been widely acknowledged as the main fundaments of ...
    • Location-based analysis and optimization of service network performance: A case study 

      Yang, Shuo; Yu, Hao; Solvang, Wei Deng (Peer reviewed; Book; Chapter, 2018-05-07)
      The location problem of service network has been extensively focused by researchers in operational research due to the difficulty in balancing the level of service and efficiency. On the one hand, installing a large number of service facilities within the service network improves availability and responsiveness to customer demands, but it also increases the investment and operating cost. While on ...
    • Measuring the Effectiveness of AI-Enabled Chatbots in Customer Service Using AnyLogic Simulation 

      Sun, Xu; Yu, Hao; Solvang, Wei Deng (Chapter; Bokkapittel, 2023-01-26)
      With the rapid technological advancement and innovation in Industry 4.0/5.0, digitalization has become the mainstream that transforms the paradigm of many industries, businesses, and services. In this regard, AI-enabled chatbots have been increasingly adopted by many companies for providing customer services instead of human agents. On the one hand, the use of AI-enabled chatbots provides opportunities ...
    • A multi-objective location-allocation optimization for sustainable management of municipal solid waste 

      Yu, Hao; Solvang, Wei Deng (Journal article; Peer reviewed; Tidsskriftartikkel, 2017-02-13)
      The location problem of treatment and service facilities in municipal solid waste (MSW) management system is of significant importance due to the socioeconomic and environmental concerns. The consideration of waste treatment costs, environmental impact, greenhouse gas (GHG) emissions, social fairness as well as other relevant aspects should be simultaneously taken into account when a MSW management ...
    • A multi-objective mathematical programming for sustainable reverse logistics network design. Part I: Model formulation 

      Yu, Hao; Solvang, Wei Deng; Solvang, Bjørn (Journal article; Peer reviewed; Tidsskriftartikkel, 2016-02)
      Reverse logistics has received more and more attention during the past decade due to the increasing public awareness of sustainable development. Because of the fluctuation in both quantity and quality of the reverse material flow, design and planning of reverse logistics network is much more complicated comparing with the forward ones. Therefore, it is important to develop decision support tools for ...
    • A multi-objective mathematical programming for sustainable reverse logistics network design. Part II: Model application and analysis 

      Yu, Hao; Solvang, Wei Deng; Solvang, Bjørn (Peer reviewed; Chapter; Bokkapittel, 2016-02)
      Reverse logistics has received more and more attention during the past decade due to the increasing public awareness of sustainable development. Because of the fluctuation in both quantity and quality of the reverse material flow, design and planning of reverse logistics network is much more complicated compared with the forward ones. Therefore, it is important to develop decision support tools for ...
    • A New Two-Stage Stochastic Model for Reverse Logistics Network Design under Government Subsidy and Low-Carbon Emission Requirement 

      Yu, Hao; Solvang, Wei Deng (Konferansebidrag; Conference object, 2018-02-12)
      Nowadays, increasing number of companies incorporates the reverse logistics decisions into their supply chain design in order to cope with the enforced international and national legislation and improve the resource efficiency and public image. This paper investigates a new stochastic optimization model for designing a single-period multiproduct multi-level reverse logistics system under government ...
    • Optimization of long-term performance of municipal solid waste management system: A bi-objective mathematical model 

      Yu, Hao; Solvang, Wei Deng; Li, Shiyun (Peer reviewed; Journal article; Tidsskriftsartikkel, 2015)
      Management of municipal solid waste has becoming an extremely important topic for any urban authorities in recent years due to the rapidly increasing solid waste quantity and potential environmental pollution. In this paper, a bi-objective dynamic linear programming model is developed for decision making and supporting in the long-term operation of municipal solid waste management system. The proposed ...
    • Proactive Learning for Intelligent Maintenance in Industry 4.0 

      Noureddine, Rami; Solvang, Wei Deng; Johannessen, Espen; Yu, Hao (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-03)
      Manufacturing companies require efficient maintenance practices in order to improve business performance, ensure equipment availability and reduce process downtime. With the advent of new technology, manufacturing processes are evolving from the traditional ways into digitalized manufacturing. This transformation enables systems and machines to be connected in complex networks as a collaborative ...
    • A Readiness Model for Facilitating the Implementation of Metal Additive Manufacturing at SMEs 

      Sæterbø, Mathias; Solvang, Wei Deng (Chapter; Bokkapittel, 2023-05-23)
      SMEs constitute the backbone of the global economy possessing a vital role in future economic prosperity. Today, with the increasing competition due to globalization of markets and mass customization, as well as the increasing focus on green shift and sustainability, the need to take advantage of new technological innovations has never been more prominent. Metal Additive Manufacturing (MAM) is one ...
    • Reverse Logistics Network Design for Effective Management of Medical Waste in Epidemic Outbreaks: Insights from the Coronavirus Disease 2019 (COVID-19) Outbreak in Wuhan (China) 

      Yu, Hao; Sun, Xu; Solvang, Wei Deng; Zhao, Xu (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-09)
      The outbreak of an epidemic disease may pose significant treats to human beings and may further lead to a global crisis. In order to control the spread of an epidemic, the effective management of rapidly increased medical waste through establishing a temporary reverse logistics system is of vital importance. However, no research has been conducted with the focus on the design of an epidemic reverse ...
    • SMEs challenges and needs in relation to innovation agendas and strategies 

      Ericson, Åsa; Holmqvist, Johan; Wenngren, Johan; Kaartinen, Heidi; Solvang, Wei Deng (Conference object; Konferansebidrag, 2016-06-21)
      Regional research project are, as is also regional industry, highly need-based. That is, understanding the stakeholders’ (or customers’) real challenges and related needs is important. This study is based on interviews with SMEs in the Northern parts of Finland, Norway and Sweden, but also on available innovation agendas and strategies for each country. The differences among the companies in those ...
    • Solving a Real-World Urban Postal Service Network Redesign Problem 

      Yu, Hao; Sun, Xu; Solvang, Wei Deng; Laporte, Gilbert (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-28)
      Due to recent technological advancements, more diversified customer demand, and increasingly harder competition, traditional postal service systems have experienced significant changes all over the world. In Norway, through a strategic reform called post-in-shop, undertaken in 2013, most postal services are now provided at postal service counters located in retailer stores in order to improve ...
    • Solving the Location Problem of Printers in a University Campus Using p-Median Location Model and AnyLogic Simulation 

      Sun, Xu; Yu, Hao; Solvang, Wei Deng (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-03)
      The location decision on service facilities is of significant importance in determining the accessibility of the service provided. Due to this reason, it has been extensively focused over the past decades by both researchers and practitioners. This paper investigates a novel two-phase hybrid method combining both optimization model and agent-based simulation in order to solve the location problem ...
    • A Stochastic Closed-Loop Supply Chain Network Optimization Problem Considering Flexible Network Capacity 

      Yu, Hao; Solvang, Wei Deng; Sun, Xu (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-03)
      Nowadays, due to the concern of environmental challenges, global warming and climate change, companies across the globe have increasingly focused on the sustainable operations and management of their supply chains. Closed-loop supply chain (CLSC) is a new concept and practice, which combines both traditional forward supply chain and reverse logistics in order to simultaneously maximize the utilization ...
    • A Stochastic Network Design Problem for Hazardous Waste Management 

      Yu, Hao; Sun, Xu; Solvang, Wei Deng; Laporte, Gilbert; Lee, Carman K M (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-05)
      Hazardous waste management is of paramount importance due to the potential threats posed to the environment and local residents. The design of a hazardous waste management system involves several important decisions, i.e., the determination of the locations and sizes of treatment, recycling and disposal facilities, and organizing the transportation of hazardous waste among different facilities. In ...
    • A stochastic programming approach with improved multi-criteria scenario-based solution method for sustainable reverse logistics design of Waste electrical and electronic equipment (WEEE) 

      Yu, Hao; Solvang, Wei Deng (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-12-17)
      Today, the increased public concern for sustainable development and more stringent environmental regulations have become the most important driving forces for value recovery from end-of-life and end-of use products through reverse logistics. Waste electrical and electronic equipment (WEEE) contains both valuable components that need to be recycled and hazardous substances that have to be properly ...
    • System Integration for Smart Reverse Logistics Management 

      Sun, Xu; Yu, Hao; Solvang, Wei Deng (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-16)
      To maximize the value and material recovery from waste products, smart reverse logistics aims at managing the complex flows of physical items, cash, data, and information. The effective management of these flows requires optimal decision making at strategic, tactical, and operational levels. To support the decision making, predictive, prescriptive, and descriptive analytics have been proved to be ...
    • Towards the smart and sustainable transformation of Reverse Logistics 4.0: a conceptualization and research agenda 

      Sun, Xu; Yu, Hao; Solvang, Wei Deng (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-16)
      The recent advancement of digitalization and information and communication technology (ICT) has not only shifted the manufacturing paradigm towards the Fourth Industrial Revolution, namely Industry 4.0, but also provided opportunities for a smart logistics transformation. Despite studies have focused on improving the smartness, connectivity, and autonomy of isolated logistics operations with a primary ...