| 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. |
- Kifokeris, Dimosthenis, 1988, et al.
(författare)
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Blockchain and lean construction: an exploration of bidirectional synergies and interactions
- 2023
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Ingår i: Architectural Engineering and Design Management. - 1745-2007 .- 1752-7589.
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Tidskriftsartikel (refereegranskat)abstract
- Blockchain is a form of digital distributed ledger, referring to databases decentralized across numerous users, facilitating peer-to-peer transactions by eliminating or reducing the need for intermediaries to conduct, validate, or authenticate them. It is characterized by transparency, data immutability and traceability, and consensus processes validating cryptographic signatures. The architecture, engineering, construction, and operations (AECO) industry is increasingly interested in blockchain. Lean construction (LC), a value-focused production management concept, has long been challenging conventional project management practices in AECO. Lack of conversation, however, surrounds whether and how blockchain can (or should) impact LC developments – and vice versa. And if that impact exists – is it significant enough to create value for the related stakeholders? This article offers a conceptual synergistic framework of interactions between blockchain and LC, which can facilitate an understanding on whether there is value in their combined use. A systematic literature review and analysis serve as the foundation of this research. The findings show that LC can be facilitated by blockchain through trust building for relational procurement, data recording for some key activities (e.g. offsite construction, Last Planner System), and streamlining some non-value activities (e.g. payments). In return, blockchain can gain relevance for project management practices when it is defined and implemented in a LC framework. Also, LC can help improve blockchain-related workflows and decision making.
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| 3. |
- Kifokeris, Dimosthenis, 1988, et al.
(författare)
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What is the potential value of tokens and token engineering for the architecture, engineering, and construction industry? A positional paper
- 2023
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Ingår i: Proceedings of the European Conference on Computing in Construction.
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Konferensbidrag (refereegranskat)abstract
- What is the value of tokens for blockchain applications in Architecture, Engineering, and Construction (AEC)? How can token engineering be contextualized in AEC? This positional paper instigates the tackling of these largely unexplored questions. Following a literature review and a visiting of token engineering fundamentals, the paper’s position is that tokens can indeed hold potential value for AEC. This value can be direct, utilitarian, security-related, and/or pegged, and reflected in technical and economic terms. For this value to be realized, the token must be systematically embedded in the AEC ecosystem – therefore dependent on sociotechnical parameters in AEC.
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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
-
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. |
- Sadri, Habib, et al.
(författare)
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Integration of Blockchain and Digital Twins in the Smart Built Environment Adopting Disruptive Technologies—A Systematic Review
- 2023
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Ingår i: Sustainability. - : MDPI. - 2071-1050. ; 15:4
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Forskningsöversikt (refereegranskat)abstract
- The integration of blockchain and digital twins (DT) for better building-lifecycle data management has recently received much attention from researchers in the field. In this respect, the adoption of enabling technologies such as artificial intelligence (AI) and machine learning (ML), the Internet of Things (IoT), cloud and edge computing, Big Data analytics, etc., has also been investigated in an abundance of studies. The present review inspects the recent studies to shed light on the foremost among those enabling technologies and their scope, challenges, and integration potential. To this end, 86 scientific papers, recognized and retrieved from the Scopus and Web of Science databases, were reviewed and a thorough bibliometric analysis was performed on them. The obtained results demonstrate the nascency of the research in this field and the necessity of further implementation of practical methods to discover and prove the real potential of these technologies and their fusion. It was also found that the integration of these technologies can be beneficial for addressing the implementation challenges they face individually. In the end, an abstract descriptive model is presented to provide a better understanding of how the technologies can become integrated into a unified system for smartening the built environment.
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| 8. |
- Tezel, Algan, et al.
(författare)
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A conceptual framework for lean construction and blockchain synergy
- 2022
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Ingår i: 30th Annual Conference of the International Group for Lean Construction, IGLC 2022. - : International Group for Lean Construction. ; , s. 576-587
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Konferensbidrag (refereegranskat)abstract
- Blockchain is a distributed ledger technology referring to decentralized databases existing across multiple locations and participants, in which the need for intermediaries to process, validate or authenticate transactions is reduced or eliminated. Such transactions are synchronously held by computer nodes in distributed copies, with cryptographic signatures validated through consensus protocols and transparency achieved through peer-to-peer transactional access among the nodes. Blockchain-based applications can be preferred over centralized databases on the basis of high levels of trust, data security, immutability, transparency, and multi-user consensus protocols. There is growing interest in blockchain in the built environment, with a focus on procurement, the management of supply chain project-life cycle, smart cities, intelligent systems, sustainability, and decentralized organizations. However, there is little discussion on whether and how blockchain will affect the advances in lean construction (LC) and vice versa. This paper therefore proposes a framework that establishes interactions between blockchain and lean construction, which can potentially facilitate the implementation of both. It is based on a synthetic literature review. The results indicate that blockchain can facilitate the implementation of LC (e.g., recording and retrieving of Last Planner data), and vice versa (e.g., value stream mapping guiding the integration of blockchain with processes).
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| 9. |
- 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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| 10. |
- 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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| 11. |
- Kifokeris, Dimosthenis, 1988, et al.
(författare)
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- 2024
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Ingår i: COMPUTING IN CIVIL ENGINEERING 2023-VISUALIZATION, INFORMATION MODELING, AND SIMULATION. - 9780784485231 ; , s. 493-500
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Konferensbidrag (refereegranskat)abstract
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