| 1. |
- Algan, Tezel, et al.
(författare)
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Insights into Blockchain Implementation in Construction : Models for Supply Chain Management
- 2021
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Ingår i: Journal of Management in Engineering. - : American Society of Civil Engineers (ASCE). - 0742-597X .- 1943-5479. ; 37:4
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Tidskriftsartikel (refereegranskat)abstract
- The interest in the implementation of distributed ledger technologies (DLTs) is on the rise in the construction sector. One specific type of DLT that has recently attracted much attention is blockchain. Blockchain has been mostly discussed conceptually for construction to date. This study presents some empirical discussions on supply chain management (SCM) applications of blockchain for construction by collecting feedback for three blockchain-based models: project bank accounts (PBAs) for payments, reverse auction–based tendering for bidding, and asset tokenization for project financing. The feedback was collected from three focus groups and a workshop. The working prototypes for the models were developed on Ethereum. The implementation of blockchain in payment arrangements was found to be simpler than in tendering and project tokenization workflows. However, the blockchain integration of those workflows may have large-scale impacts on the sector in the future. A broad set of general and model-specific benefits/opportunities and requirements/challenges was also identified for blockchain in construction. Some of these include streamlined, transparent transactions and rational trust building, and the need for challenging the sector culture, upscaling the legacy information technology (IT) systems, and compliance with the regulatory structures.
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| 2. |
- Jaskula, Klaudia, et al.
(författare)
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Blockchain-based decentralised Common Data Environment: user requirements and conceptual framework
- 2023
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The ISO19650 standard proposed a common data environment (CDE) as a single source of truth for all project information that facilitates continuous collaboration between stakeholders. In practice, multiple CDEs are used simultaneously, leading to a lack of data integrity, traceability and transparency. Moreover, current centralised cloud-based CDEs are vulnerable to security risks such as data manipulation which magnifies the lack of trust among project stakeholders. Previous studies, proposing blockchain for information management focus on narrow use cases and do not encompass the whole lifecycle of a built asset. This work aims to develop a framework for decentralised information management in relation to all phases of the lifecycle. First, we identify the needs of the users for a CDE using desk research and an empirical approach including semi-structured interviews with industry experts. It is found that the top user requirement is integrating data scattered across multiple CDEs along the built asset's lifecycle in a single source of truth. A CDE should provide an accountable and transparent record of the entire project history integrating data from various tools utilised during the lifecycle. In the final step, we propose a conceptual framework for a blockchain-based CDE where transactions from various tools used along the entire lifecycle of a built asset are recorded on a blockchain linked with Inter-Planetary File Storage (IPFS) to increase the security of the files. Three illustrative use-case scenarios demonstrate the framework's applicability in design, construction, and operation phases. The utilisation of blockchain technology ensures an immutable, independent, and reliable record of all transactions, offering a comprehensive and tamperproof history. This approach not only addresses existing gaps in previous studies but also lays the foundation for establishing trustworthy Product and Material Passports.
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| 3. |
- Jaskula, Klaudia, et al.
(författare)
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Common data environments in construction: state-of-the-art and challenges for practical implementation
- 2024
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Ingår i: Construction Innovation. - : Elsevier BV. - 1477-0857 .- 1471-4175.
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Forskningsöversikt (refereegranskat)abstract
- Purpose Information management workflow in building information modelling (BIM)-based collaboration is based on using a common data environment (CDE). The basic premise of a CDE is exposing all relevant data as a single source of truth and facilitating continuous collaboration between stakeholders. A multitude of tools can be used as a CDE, however, it is not clear how the tools are used or if they fulfil the users’ needs. Therefore, this paper aims to investigate current practices of using CDEs for information management during the whole built asset’s life cycle, through a state-of-the-art literature review and an empirical study. Design/methodology/approach Literature data is collected according to the PRISMA 2020 guideline for reporting systematic reviews. This paper includes 46 documents in the review and conduct a bibliometric and thematic analysis to identify the main challenges of digital information management. To understand the current practice and the views of the stakeholders using CDEs in their work, this paper used an empirical approach including semi-structured interviews with 15 BIM experts. Findings The results indicate that one of the major challenges of CDE adoption is project complexity and using multiple CDEs simultaneously leading to data accountability, transparency and reliability issues. To tackle those challenges, the use of novel technologies in CDE development such as blockchain could be further investigated. Originality/value The research explores the major challenges in the practical implementation of CDEs for information management. To the best of the authors’ knowledge, this is the first study on this topic combining a systematic literature review and fieldwork.
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| 4. |
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| 5. |
- Papadonikolaki, Eleni, et al.
(författare)
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Blockchain innovation ecosystems orchestration in construction
- 2023
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Ingår i: Industrial management & data systems. - : Emerald Group Publishing Limited. - 0263-5577 .- 1758-5783. ; 123:2, s. 672-694
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: Rapid advancements in blockchain technology transform various sectors, attracting the attention of industrialists, practitioners, policymakers and academics, and profoundly affect construction businesses through smart contracts and crypto-economics. This paper explores the blockchain innovation ecosystem in construction.Design/methodology/approach: Through a qualitative study of 23 diverse interviewees, the study explores how open or closed the blockchain innovation ecosystem in construction is and who its emerging orchestrators are.Findings: The data showed that construction aims towards an open innovation blockchain ecosystem, although there are elements of hybridisation and closedness, each system pointing out to different orchestrators.Practical implications: The study has implications for governments and large companies in construction, showing that open innovation initiatives need to be encouraged by policymakers through rules, regulations and government-sponsored demonstrator projects.Social implications: The data showed that there is lack of readiness for business model change to support open innovation blockchain ecosystems in construction.Originality/value: This is the first study applying the open innovation theory in the construction industry and sheds light into the phenomenon of blockchain, suggesting routes for further democratisation of the technology for policymakers and practitioners.
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| 6. |
- Papadonikolaki, Eleni, et al.
(författare)
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Blockchain innovation ecosystems orchestration in construction
- 2023
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Ingår i: Industrial management & data systems. - : Emerald. - 0263-5577 .- 1758-5783. ; 123:2, s. 672-694
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: Rapid advancements in blockchain technology transform various sectors, attracting the attention of industrialists, practitioners, policymakers and academics, and profoundly affect construction businesses through smart contracts and crypto-economics. This paper explores the blockchain innovation ecosystem in construction. Design/methodology/approach: Through a qualitative study of 23 diverse interviewees, the study explores how open or closed the blockchain innovation ecosystem in construction is and who its emerging orchestrators are. Findings: The data showed that construction aims towards an open innovation blockchain ecosystem, although there are elements of hybridisation and closedness, each system pointing out to different orchestrators. Practical implications: The study has implications for governments and large companies in construction, showing that open innovation initiatives need to be encouraged by policymakers through rules, regulations and government-sponsored demonstrator projects. Social implications: The data showed that there is lack of readiness for business model change to support open innovation blockchain ecosystems in construction. Originality/value: This is the first study applying the open innovation theory in the construction industry and sheds light into the phenomenon of blockchain, suggesting routes for further democratisation of the technology for policymakers and practitioners.
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| 7. |
- Tezel, Algan, et al.
(författare)
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Preparing Construction Supply Chains for Blockchain : An Exploratory Analysis
- 2019
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Ingår i: Proceedings of the CIB World Building Congress 'Constructing Smart Cities'. International Council for Research and Innovation in Building and Construction (CIB): Hong Kong, China.
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Konferensbidrag (refereegranskat)abstract
- Blockchain, a peer-to-peer controlled, distributed database structure, has the potential to profoundly affect the current business transactions in the construction industry through smart contracts, cryptocurrencies, and reliable asset tracking. The construction industry has often been criticized for being slow in embracing emerging technologies and not effectively diffusing those technologies through its supply chains. Often, the extensive fragmentation, traditional procurement structures, destructive competition, lack of collaboration and transparency, low-profit margins and human resources are shown as the main culprits for this. As Blockchain makes its presence felt strongly in many other industries like finance and banking, this paper investigates how to prepare construction supply chains for Blockchain technology through an explorative analysis. Empirical data for the study were collected through semi-structured interviews with 17 subject experts. Alongside presenting a SWOT (strengths, weaknesses opportunities, threats) analysis, the paper exhibits the requirements for and steps toward a construction supply structure facilitated by Blockchain.
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| 8. |
- Tezel, Algan, et al.
(författare)
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Preparing construction supply chains for blockchain technology: An investigation of its potential and future directions
- 2020
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Ingår i: Frontiers of Engineering Management. - : Springer. - 2095-7513 .- 2096-0255. ; 7, s. 547-563
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Tidskriftsartikel (refereegranskat)abstract
- Blockchain, a peer-to-peer, controlled, distributed database structure, has the potential to profoundly affect current business transactions in the construction industry through smart contracts, cryptocurrencies, and reliable asset tracking. The construction industry is often criticized for being slow in embracing emerging technologies and not effectively diffusing them through its supply chains. Often, the extensive fragmentation, traditional procurement structures, destructive competition, lack of collaboration and transparency, low-profit margins, and human resources are shown as the main culprits for this. As blockchain technology makes its presence felt strongly in many other industries like finance and banking, this study investigates the preparation of construction supply chains for blockchain technology through an explorative analysis. Empirical data for the study were collected through semi-structured interviews with 17 subject experts. Alongside presenting a strengths, weaknesses, opportunities, and threats analysis (SWOT), the study exhibits the requirements for and steps toward a construction supply structure facilitated by blockchain technology
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