Relevant bibliographies by topics / Blockchains (Databases)

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Blockchains (Databases)'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 July 2024

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Journal articles on the topic "Blockchains (Databases)"

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Ge, Zerui, Dumitrel Loghin, Beng Chin Ooi, Pingcheng Ruan, and Tianwen Wang. "Hybrid blockchain database systems." Proceedings of the VLDB Endowment 15, no. 5 (January 2022): 1092–104. http://dx.doi.org/10.14778/3510397.3510406.

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With the emergence of hybrid blockchain database systems, we aim to provide an in-depth analysis of the performance and trade-offs among a few representative systems. To achieve this goal, we implement Veritas and BlockchainDB from scratch. For Veritas, we provide two flavors to target the crash fault-tolerant (CFT) and Byzantine fault-tolerant (BFT) application scenarios. Specifically, we implement Veritas with Apache Kafka to target CFT application scenarios, and Veritas with Tendermint to target BFT application scenarios. We compare these three systems with the existing open-source implementation of BigchainDB. BigchainDB uses Tender-mint for consensus and provides two flavors: a default implementation with blockchain pipelining and an optimized version that includes blockchain pipelining and parallel transaction validation. Our experimental analysis confirms that CFT designs, which are typically used by distributed databases, exhibit much higher performance than BFT designs, which are specific to blockchains. On the other hand, our extensive analysis highlights the variety of design choices faced by the developers and sheds some light on the trade-offs that need to be done when designing a hybrid blockchain database system.
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Zheng, Xiaoying, Yongxin Zhu, and Xueming Si. "A Survey on Challenges and Progresses in Blockchain Technologies: A Performance and Security Perspective." Applied Sciences 9, no. 22 (November 6, 2019): 4731. http://dx.doi.org/10.3390/app9224731.

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Blockchain naturally fits multiple industry sectors due its characteristics of decentralization, enhanced security, tamper-proof, improved traceability and transparency. However, there is a significant concern of blockchain’s performance, since blockchain trades off its performance for a completely distributed feature, which enhances its security. In this paper, we investigate the state-of-the-art progress of blockchain, mainly from a performance and security perspective. We extracted 42 primary papers from major scientific databases and 34 online technical articles. The objective is to understand the current research trends, challenges and future directions. We briefly introduce the key technologies of blockchain including distributed ledger, cryptography, consensus, smart contracts and benchmarks. We next summarize the performance and security concerns raised in the investigation. We discuss the architectural choices, performance metrics, database management enhancements, and hybrid blockchains, and try to identify the effort that the state-of-the-art has made to balance between the performance and security. We also make experiments on Ethereum and survey other popular blockchain platforms on the scalability feature of blockchain. We later discuss the potential applications and present the lessons learned. Finally, we attempt to identify the open issues and possible research directions.
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Siddesh G. M., S. R. Mani Sekhar, Vighnesh S., Nikhila Sai, Deepthi Sai, and Sanjana D. "Distributed Database Management With Integration of Blockchain and Long Short-Term Memory." International Journal of Information Retrieval Research 11, no. 3 (July 2021): 18–33. http://dx.doi.org/10.4018/ijirr.2021070102.

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Supply chain management is the broad range of activities required to plan, control, and execute the flow of a product. As a less corruptible and more automated alternative to traditional databases, blockchains are well suited to the complicated record-keeping. However distributed database management system is a centralized software system; the blockchain technology can overcome the problem of synchronization between multiple databases; it also ensures that integrity problems are solved. In the proposed model, Ethereum blockchain is used to solve a few major supply chain problems to manage a distributed database. The model has incorporated techniques to predict the rise and fall of the demand for the medicine in the market by using machine learning algorithms such as linear regression and LSTM; also, the trend predicted by both the models has been compared. The result shows that while using linear regression the predicted trend is not very accurate and cannot trace the actual trend closely whereas BLSTM has performed well in predicting the trends of time series data.
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Jagdish, Mukta, Neetu Anand, Kumar Gaurav, Sameer Bashir, Abdullah Alqahtani, and V. Saravanan. "Multihoming Big Data Network Using Blockchain-Based Query Optimization Scheme." Wireless Communications and Mobile Computing 2022 (August 21, 2022): 1–10. http://dx.doi.org/10.1155/2022/7768169.

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In this paper, we have proposed the intimate environment of multiblockchain optimization algorithm using big data inquiry to mend the effectiveness of association query handling among numerous multihoming blockchains by implementing the big data system. This technique adds semantic evidences to the old-styled multiblockchain prototype and constructs a semantic model of multiblockchain that delivers a foundation for linking queries among the various blockchain multihoming system in big data. On the base of this model, distributed databases have index arrangement, and a linking index arrangement is proposed among the numerous blockchains, with several attributes linked to these blockchains employed to improve the efficacy of linking calculation. Besides, the communication cost is d for data communication. On this foundation, a multichain linking enquiry algorithm based on optimization is anticipated to progress the productivity of multiblockchain connection queries. To conclude, two genuine big data community sets of data are used to conduct experiments on. The associating index arrangement among blockchains is unchanging and is equated with the old-styled direct linking inquiry operation. The multiblockchain linking query method of optimization shortens the probe processing procedure. It acquires the query outcomes directly by retrieving the linking index, sinking the local calculating ability, system overhead, and illuminating query efficacy.
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Al-Rawy, Mahmoud, and Atilla Elci. "Secure i-Voting Scheme with Blockchain Technology and Blind Signature." Journal of Digital Science, no. 1 (December 22, 2019): 3–14. http://dx.doi.org/10.33847/2686-8296.1.1_1.

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In the last four years, blockchain technology affected largely all aspects of our lives. Blockchain started to launch a new technological revolution of storing digital transactions over the Internet, verifying the authenticity, licensing and providing the highest degree of security and encryption. Blockchain usage started with digital currency then its implementation extended to many industries such as voting, health records, copywriters, real estates and so on. However, it is time to upgrade the election scenario from practicing paper-based elections to use modern technologies in order to facilitate our lives. The fact that the blockchain technology has demonstrated almost infinite immutability and high resistance against hacking, lends credit to employ it in securing election data from fraud by saving every single piece of data, record or transaction with unchangeable history. In this paper, we propose and test implement a robust online voting system based on blockchain in order to prevent election forgery and ease the voting process for citizens. The essence of our research lies in abandoning alterable traditional databases and replacing them with two private blockchains that use the peer-to-peer network. Along with the blockchains, we utilized blind signature to maintain vote/voter privacy in order to safeguard voter eligibility validation against manipulation and forgery. Lastly, we discuss a threat model, and suggest solutions overcome it; we also suggest a solution to identity impersonation and vote-selling problems.
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Queiroz, Maciel M., Renato Telles, and Silvia H. Bonilla. "Blockchain and supply chain management integration: a systematic review of the literature." Supply Chain Management: An International Journal 25, no. 2 (August 22, 2019): 241–54. http://dx.doi.org/10.1108/scm-03-2018-0143.

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Purpose This paper aims to identify, analyse and organise the literature about blockchains in supply chain management (SCM) context (blockchain–SCM integration) and proposes an agenda for future research. This study aims to shed light on what the main current blockchain applications in SCM are, what the main disruptions and challenges are in SCM because of blockchain adoption and what the future of blockchains holds in SCM. Design/methodology/approach This study followed the systematic review approach to analyse and synthesise the extant literature on blockchain–SCM integration. The review analysed 27 papers between 2008 and 2018 in peer-reviewed journals. Findings Blockchain–SCM integration is still in its infancy. Scholars and practitioners are not fully aware of the potential of blockchain technology to disrupt traditional business models. However, the electric power industry seems to have a relatively mature understanding of blockchain–SCM integration, demonstrated by the use of smart contracts. Additionally, the disintermediation provided by blockchain applications has the potential to disrupt traditional industries (e.g. health care, transportation and retail). Research limitations/implications The limitations of this study are represented mainly by the scarcity of studies on blockchain–SCM integration in leading journals and databases. Practical implications This study highlights examples of blockchain–SCM integration, emphasising the need to rethink business models to incorporate blockchain technology. Originality/value This study is the first attempt to synthesise existing publications about the blockchain–SCM integration, shedding light on the disruption caused by, and the necessity of, the SCM reconfigurations.
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Popova, O. S. "Use of blockchain technology in veterinary practice." Legal regulation in veterinary medicine, no. 4 (January 8, 2023): 107–9. http://dx.doi.org/10.52419/issn2782-6252.2022.4.107.

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The article discusses the use of blockchains in various areas of veterinary medicine, including veterinary education. So, in the Russian Federation, as early as 2019, a departmental project "Digital Agriculture" was created, which includes three stages: the creation and integration of databases, the introduction of the "Agricultural Solutions" module of the national platform, and the final one - the creation of a system for continuous training of specialists of agricultural enterprises in order to form of them competencies in the field of digital economy.The polythematic abstract-bibliographic base is analyzed. The main attention was paid to such scientometric databases as: Web of Science Core Collection, Medline, PubMed, RSCI, as well as data from the eLIBRARY.ru portal. An assessment of the statistical data and publication activity of the authors regarding the request and use of blockchain technology was made.The aim of the study was to analyze the publication activity of the authors and relevant data search from 2019-2023, regarding the use of blockchain technologies in veterinary medicine.If in 2019, at the request of "blockchain in veterinary medicine", the system issued 7 publications, for 2020 - 15 articles, 2021 - 16 articles, then in 2022. already 25 articles. As of November 2022, in 2023, there are already 4 preprints. All these data indicate that this technology is rapidly gaining momentum in the scientific field, and many scientists and entrepreneurs see great prospects in it.According to the studies conducted in scientometric databases, and their distribution by relevance, showed the relevance of introducing this technology, big database technology, blockchain technologies not only in veterinary practice, but also in veterinary education.
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Wu, Chenyuan, Mohammad Javad Amiri, Haoyun Qin, Bhavana Mehta, Ryan Marcus, and Boon Thau Loo. "Towards Full Stack Adaptivity in Permissioned Blockchains." Proceedings of the VLDB Endowment 17, no. 5 (January 2024): 1073–80. http://dx.doi.org/10.14778/3641204.3641216.

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This paper articulates our vision for a learning-based untrustworthy distributed database. We focus on permissioned blockchain systems as an emerging instance of untrustworthy distributed databases and argue that as novel smart contracts, modern hardware, and new cloud platforms arise, future-proof permissioned blockchain systems need to be designed with full-stack adaptivity in mind. At the application level, a future-proof system must adaptively learn the best-performing transaction processing paradigm and quickly adapt to new hardware and unanticipated workload changes on the fly. Likewise, the Byzantine consensus layer must dynamically adjust itself to the workloads, faulty conditions, and network configuration while maintaining compatibility with the transaction processing paradigm. At the infrastructure level, cloud providers must enable cross-layer adaptation, which identifies performance bottlenecks and possible attacks, and determines at runtime the degree of resource disaggregation that best meets application requirements. Within this vision of the future, our paper outlines several research challenges together with some preliminary approaches.
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Shinde, Rucha, Shruti Patil, Ketan Kotecha, and Kirti Ruikar. "Blockchain for Securing AI Applications and Open Innovations." Journal of Open Innovation: Technology, Market, and Complexity 7, no. 3 (August 14, 2021): 189. http://dx.doi.org/10.3390/joitmc7030189.

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Nowadays, open innovations such as intelligent automation and digitalization are being adopted by every industry with the help of powerful technology such as Artificial Intelligence (AI). This evolution drives systematic running processes, involves less overhead of managerial activities and increased production rate. However, it also gave birth to different kinds of attacks and security issues at the data storage level and process level. The real-life implementation of such AI-enabled intelligent systems is currently plagued by the lack of security and trust levels in system predictions. Blockchain is a prevailing technology that can help to alleviate the security risks of AI applications. These two technologies are complementing each other as Blockchain can mitigate vulnerabilities in AI, and AI can improve the performance of Blockchain. Many studies are currently being conducted on the applicability of Blockchains for securing intelligent applications in various crucial domains such as healthcare, finance, energy, government, and defense. However, this domain lacks a systematic study that can offer an overarching view of research activities currently going on in applying Blockchains for securing AI-based systems and improving their robustness. This paper presents a bibliometric and literature analysis of how Blockchain provides a security blanket to AI-based systems. Two well-known research databases (Scopus and Web of Science) have been examined for this analytical study and review. The research uncovered that idea proposals in conferences and some articles published in journals make a major contribution. However, there is still a lot of research work to be done to implement real and stable Blockchain-based AI systems.
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Lawlor, Bonnie. "Blockchain Technology." Chemistry International 42, no. 3 (July 1, 2020): 8–11. http://dx.doi.org/10.1515/ci-2020-0304.

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AbstractI first heard of blockchain technology at a conference in 2017 when Christopher Wilmer, Assistant Professor at the University of Pittsburgh and Managing Editor of Ledger, [1] gave a presentation on the technology. While he did mention Bitcoin and other cryptocurrencies with which the technology was originally associated, Wilmer’s talk explained how his journal uses blockchain for proof-of-publication. He commented that as a data-storage mechanism, “blockchains are well-suited to be used in scholarly publishing because they are extremely resilient, tamper-proof, practically indestructible databases; there is no single point of failure or cost of operation; and there is an incontrovertible proof-of-publication date, even across countries and institutions whose incentives are not aligned (which is sometimes a point of contention for scientists racing to discover cure/new theorem/etc.)” [2].
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Dissertations / Theses on the topic "Blockchains (Databases)"

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Bergman, Sara. "Permissioned Blockchains and Distributed Databases : A Performance Study." Thesis, Linköpings universitet, Programvara och system, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-152230.

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Blockchain technology is a booming new field in both computer science and economicsand other use cases than cryptocurrencies are on the rise. Permissioned blockchains are oneinstance of the blockchain technique. In a permissioned blockchain the nodes which validatesnew transactions are trusted. Permissioned blockchains and distributed databasesare essentially two different ways for storing data, but how do they compare in terms ofperformance? This thesis compares Hyperledger Fabric to Apache Cassandra in four experimentsto investigate their insert and read latency. The experiments are executed usingDocker on an Azure virtual machine and the studied systems consist of up to 20 logicalnodes. Latency measurements are performed using varying network size and load. Forsmall networks, the insert latency of Cassandra is twice as high as that of Fabric, whereasfor larger networks Fabric has almost twice as high insert latencies as Cassandra. Fabrichas around 40 ms latency for reading data and Cassandra between 150 ms to 250 ms, thusit scales better for reading. The insert latency of different workloads is heavily affected bythe configuration of Fabric and by the Docker overhead for Cassandra. The read latency isnot affected by different workloads for either system.
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Tilton, Peter. "Benchmarking Public and Private Blockchains and Understanding the Development of Private Blockchain Networks." Scholarship @ Claremont, 2018. http://scholarship.claremont.edu/cmc_theses/1963.

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This thesis paper explores the developing technology blockchain by trying to understand the technology from a technical performance standpoint and also understanding the development process of blockchain networks and applications. The first half of this paper analyzes two research papers, "Bitcoing-NG: A Scalable Blockchain Protocol" and "Untangling Blockchain: A Data Processing View of Blockchain Systems," to understand and explain some of the technical differences and shortcomings of blockchain technologies. The second half of this paper then proceeds to develop a private blockchain network on the Ethereum network and deploy a smart contract on that private blockchain network. This process gives insight into the development of blockchain applications and identifies the struggles blockchain developers face.
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Blankenship, Joe. "Forging Blockchains: Spatial Production and Political Economy of Decentralized Cryptocurrency Code/Spaces." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6681.

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Cryptocurrencies and blockchains are increasingly used, implemented and adapted for numerous purposes; people and businesses are integrating these technologies into their practices and strategies, creating new political economies and spaces in and of everyday life. This thesis seeks to develop a foundation of geographic theory for the study of spatial production within and surrounding blockchain technologies focusing on acute studies of Bitcoin as cryptocurrency, Ethereum as digital marketplace, and their conditions of possibility as decentralized autonomous organizations. Utilizing concepts from Henri Lefebvre's Production of Space, this thesis situates blockchain technologies within the wider discussion about the political economy of modes of spatial production, dialectical material methods, code/space, and network society through an examination of human and machine relations within their unique and emergent spaces. Combining phenomenological and dialectical material methods with the methodological practice of discourse analysis and systems theory, this thesis explores an understanding of how systemic mechanisms and actant actions driving blockchain technologies are indications of new evolutions in our conceptions of space and place in everyday life of later informational capitalism.
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Moudoud, Hajar. "Intégration de la Blockchain à l’Internet des Objets." Electronic Thesis or Diss., Troyes, 2022. http://www.theses.fr/2022TROY0006.

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L'Internet des objets (IdO) est en train de transformer l'industrie traditionnelle en une industrie intelligente où les décisions sont prises en fonction des données. L'IdO interconnecte de nombreux objets qui effectuent des tâches complexes. Toutefois, les caractéristiques intrinsèques de l'IdO entraînent plusieurs problèmes, tels que la décentralisation et les problèmes de confidentialité et sécurité. La blockchain est apparue comme une technologie clé pour relever les défis de l'IdO. En raison de ses caractéristiques saillantes telles que la décentralisation, l'immuabilité, et la sécurité, la blockchain a été proposée pour établir la confiance dans plusieurs applications, y compris l'IdO. L'intégration de la blockchain a l'IdO ouvre la porte à de nouvelles possibilités qui améliorent intrinsèquement la fiabilité, la réputation, et la transparence pour toutes les parties concernées, tout en permettant la sécurité. Cependant, les blockchains classiques sont coûteuses en calcul, ont une évolutivité limitée, et nécessitent une bande passante élevée, ce qui les rend inadaptées aux environnements IdO à ressources limitées. L'objectif principal de cette thèse est d'utiliser la blockchain comme un outil clé pour améliorer l'IdO. Pour atteindre notre objectif, nous relevons les défis de la fiabilité des données et de la sécurité de l'IdO en utilisant la blockchain ainsi que de nouvelles technologies émergentes, notamment l'intelligence artificielle
The Internet of Things (IoT) is transforming traditional industry into a smart industry where decisions are made based on data. The IoT interconnects many objects that perform complex tasks. However, the intrinsic characteristics of the IoT lead to several problems, such as decentralization and privacy and security issues. Blockchain has emerged as a key technology to address the challenges of IoT. Due to its salient features such as decentralization, immutability, and security, blockchain has been proposed to establish trust in several applications, including IoT. The integration of blockchain with IoT opens the door to new possibilities that inherently improve trustworthiness, reputation, and transparency for all parties involved, while enabling security. However, conventional blockchains are computationally expensive, have limited scalability, and require high bandwidth, making them unsuitable for resource constrained IoT environments. The main objective of this thesis is to use blockchain as a key tool to improve IoT. To achieve our goal, we address the challenges of data reliability and security in IoT by using blockchain as well as new emerging technologies, including artificial intelligence
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Hedman, Surlien Peter. "Economic advantages of Blockchain technology VS Relational database : An study focusing on economic advantages with Blockchain technology and relational databases." Thesis, Blekinge Tekniska Högskola, Institutionen för industriell ekonomi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-17366.

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Many IT-systems are when created not designed to be flexible and dynamic resulting in old and complex systems hard to maintain. Systems usually build their functionality and capability on the data contained in their databases. The database underlines such system, and when data do not correspond between different and synchronizing systems, it is a troublesome debugging process. This is because systems are complex and the software architecture is not always easy to understand. Due to increasing complexity in systems over time, making systems harder to debug and understand, there is a need for a system that decreases debugging costs. Furthermore, result in better transaction costs. This study proposes a system based on blockchain technology to accomplish this.   An ERP system based on blockchain with encrypted transactions was constructed to determine if the proposed system can contribute in better transaction costs. A case study at multiple IT-companies and comparison to an existing ERP system module validated the system. A successful simulation showed that multiple parts could read and append data to an immutable storage system for one truth of data. By all counts, and with proven results, the constructed blockchain solution based on encrypted transactions for an ERP system can reduce debugging costs.   It is also shown that a centralized database structure where external and internal systems can get one truth of data, decreases transaction costs. However, it is the decision makers in companies that need to be convinced for the constructed system to be implemented. A problem is also when modifications to the object type, then historical transactions cannot be changed in an immutable storage solution. Blockchain is still a new technology, and the knowledge of the technology and the evolution of the system determines if the proposed software architecture will result in better transaction costs.
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Abou, El Houda Zakaria. "Security Enforcement through Software Defined Networks (SDN)." Thesis, Troyes, 2021. http://www.theses.fr/2021TROY0023.

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La conception originale d'Internet n'a pas pris en compte les aspects de sécurité du réseau, l’objectif prioritaire était de faciliter le processus de communication. Par conséquent, de nombreux protocoles de l'infrastructure Internet exposent un ensemble de vulnérabilités. Ces dernières peuvent être exploitées par les attaquants afin de mener un ensemble d’attaques. Les attaques par déni de service distribué (DDoS) représentent une grande menace; DDoS est l'une des attaques les plus dévastatrices causant des dommages collatéraux aux opérateurs de réseau ainsi qu'aux fournisseurs de services Internet. Les réseaux programmables (SDN) ont émergé comme un nouveau paradigme promettant de résoudre les limitations de l’architecture réseau actuelle en découplant le plan de contrôle du plan de données. D'une part, cette séparation permet un meilleur contrôle du réseau et apporte de nouvelles capacités pour mitiger les attaques par DDoS. D'autre part, cette séparation introduit de nouveaux défis en matière de sécurité du plan de contrôle. L’enjeu de cette thèse est double. D'une part, étudier et explorer l’apport du SDN à la sécurité afin de concevoir des solutions efficaces qui vont mitiger plusieurs vecteurs d’attaques. D'autre part, protéger le SDN contre ces attaques. À travers ce travail de recherche, nous contribuons à la mitigation des attaques par déni de service distribué sur deux niveaux (intra et inter-domaine), et nous contribuons au renforcement de la sécurité dans le SDN
The original design of Internet did not take into consideration security aspects of the network; the priority was to facilitate the process of communication. Therefore, many of the protocols that are part of the Internet infrastructure expose a set of vulnerabilities that can be exploited by attackers to carry out a set of attacks. Distributed Denial-of-Service (DDoS) represents a big threat and one of the most devastating and destructive attacks plaguing network operators and Internet service providers (ISPs) in stealthy way. Software defined networks (SDN) is an emerging technology that promises to solve the limitations of the conventional network architecture by decoupling the control plane from the data plane. On one hand, the separation of the control plane from the data plane allows for more control over the network and brings new capabilities to deal with DDoS attacks. On the other hand, this separation introduces new challenges regarding the security of the control plane. This thesis aims to deal with DDoS attacks while protecting the resources of the control plane. In this thesis, we contribute to the mitigation of both intra-domain and inter-domain DDoS attacks, and we contribute to the reinforcement of security aspects in SDN
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Huang, Shun, and Jacob Carlsson. "Blockchain Technology in the Swedish Fund Market : A Study on the Trust Relationships Between Actors in a Blockchain-Based Fund Market." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-195609.

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Blockchain is a new type of shared ledger for distributing and keeping consensus on what constitutes a true state of a system. The implications of the technology, i.e. enabling almost trustless transactions between market participants, is a revolutionary idea, especially to financial markets. The Swedish fund market, being a fragmented and in some cases inefficient system of intermediating actors, is a potential use case for the new technology of blockchain. This report reviews and presents the technology underlying the new blockchain phenomenon, and its potential application to the Swedish fund market with a specific focus on the possible new trust dynamics in such a market. Blockchain could, by removing some of the inter-participant risks, disintermediate the communication between market actors in the Swedish fund market, possibly enabling a cost reduction related to fund unit administration and order handling.
Blockkedje-teknologi är en ny typ av distribuerad databas som med hjälp av kryptologi tillåter ett system av självständiga och icke-tillitande aktörer att gemensamt dela en databas. Implikationerna för teknologin, tillåtandet av näratillitslösa transaktioner mellan marknadsdeltagare, är revolutionära, speciellt finansmarknaderna. Den svenska fondmarknaden, som karaktäriseras av fragmenterade och i vissa fall ineffektiva system, är ett potentiellt appliceringsområde för den nya teknologin. Den här rapporten går över och presenterar den underliggande tecknologin för blockkedjor, och dess potentiella applikation på den svenska fondmarknaden, med ett specifikt fokus på hur appliceringen skulle förändra tillits-förhållandena på marknaden. Det konstateras att blockkedjor skulle b.la. kunna avveckla vissa mellanliggande aktörer på marknaden, och därmed möjliggöra kostnadsbesparingar kopplade till fondadminstration och orderhantering.
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Ковальчук, Б. В. "Можливості технології Blockchain." Thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/66875.

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У сучасному світі проходить масова електронізація та автоматизація більшості сфер народного господарства, інформаційні технології впроваджуються у найрізноманітніші процеси в управлінні, виробництві, економіці та комерції. Оцифрування ключових сфер діяльності людини вимагає надійних технологій захисту, обробки та зберігання інформації, такі можливості надає технологія blockchain.
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Ongkasuwan, Patarawan. "Transaction synchronization and privacy aspect in blockchain decentralized applications." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-272134.

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The ideas and techniques of cryptography and decentralized storage have seen tremendous growth in many industries, as they have been adopted to improve activities in the organization. That called Blockchain technology, it provides an effective transparency solution. Generally, Blockchain has been used for digital currency or cryptocurrency since its inception. One of the best-known Blockchain protocols is Ethereum, which has invented the smart contract to enable Blockchain’s ability to execute a condition, rather than simply acting as storage. Applications that adopt this technology are called ‘Dapps’ or ‘decentralized applications’. However, there are ongoing arguments about synchronization associated with the system. System synchronization is currently extremely important for applications, because the waiting time for a transaction to be verified can cause dissatisfaction in the user experience. Several studies have revealed that privacy leakage occurs, even though the Blockchain provides a degree of security, as a result of the traditional transaction, which requires approval through an intermediate institution. For instance, a bank needs to process transactions via many constitution parties before receiving the final confirmation, which requires the user to wait for a considerable amount of time. This thesis describes the challenge of transaction synchronization between the user and smart contract, as well as the matter of a privacy strategy for the system and compliance. To approach these two challenges, the first task separates different events and evaluates the results compared to an alternative solution. This is done by testing the smart contract to find the best gas price result, which varies over time. In the Ethereum protocol, gas price is one of the best ways to decrease the transaction time to meet user expectations. The gas price is affected by the code structure and the network. In the smart contract, testing is run based on two cases, and solves platform issues such as runners and user experience and reduces costs. It has also been found that collecting the fee before participating in an auction can prevent the problem of runners. The second case aims to prove that freezing the amount of a bid is the best way to increase the user’s experience, and to achieve the better experience of an online auction. The second challenge mainly focuses on the privacy strategy and risk management for the platform, which involves identifying possible solutions for all risk situations, as well as detecting, forecasting and preventing them. Providing strategies, such as securing the smart contract structure, increasing the encryption method in the database, designing a term sheet and agreement, and authorization, help to prevent system vulnerabilities. Therefore, this research aims to improve and investigate an online auction platform by using a Blockchain smart contract to provide evocative user experiences.
Idéer och tekniker för kryptografi och decentraliserad lagring har haft en enorm tillväxt i många branscher, eftersom de har antagits för att förbättra verksamheten i organisationen. Den som kallas Blockchain-tekniken ger den en effektiv transparenslösning. Generellt har Blockchain använts för digital valuta eller cryptocurrency sedan starten. Ett av de mest kända Blockchainprotokollen är Ethereum, som har uppfunnit det smarta kontraktet för att möjliggöra Blockchains förmåga att utföra ett villkor, snarare än att bara fungera som lagring. Applikationer som använder denna teknik kallas 'Dapps' eller 'decentraliserade applikationer'. Det finns emellertid pågående argument om synkronisering associerad med systemet. Systemsynkronisering är för närvarande oerhört viktigt för applikationer, eftersom väntetiden för att en transaktion ska verifieras kan orsaka missnöje i användarupplevelsen. Flera studier har visat att sekretessläckage inträffar, även om Blockchain ger en viss säkerhet, till följd av den traditionella transaktionen, som kräver godkännande genom en mellaninstitution. Till exempel måste en bank bearbeta transaktioner via många konstitutionspartier innan den får den slutliga bekräftelsen, vilket kräver att användaren väntar en betydande tid. Den här avhandlingen beskriver utmaningen med transaktionssynkronisering mellan användaren och smart kontrakt, samt frågan om en sekretessstrategi för systemet och efterlevnad. För att närma sig dessa två utmaningar separerar den första uppgiften olika händelser och utvärderar resultaten jämfört med en alternativ lösning. Detta görs genom att testa det smarta kontraktet för att hitta det bästa gasprisresultatet, som varierar över tiden. I Ethereum-protokollet är gaspriset ett av de bästa sätten att minska transaktionstiden för att möta användarens förväntningar. Gaspriset påverkas av kodstrukturen och nätverket. I det smarta kontraktet körs test baserat på två fall och löser plattformsproblem som löpare och användarupplevelse och minskar kostnaderna. Det har också visat sig att insamlingen av avgiften innan du deltar i en auktion kan förhindra löparproblemet. Det andra fallet syftar till att bevisa att frysning av budbeloppet är det bästa sättet att öka användarens upplevelse och att uppnå en bättre upplevelse av en online auktion. Den andra utmaningen fokuserar huvudsakligen på sekretessstrategin och riskhanteringen för plattformen, som innebär att identifiera möjliga lösningar för alla risksituationer, samt att upptäcka, förutse och förhindra dem. Tillhandahållande av strategier, som att säkra den smarta kontraktsstrukturen, öka krypteringsmetoden i databasen, utforma ett termblad och avtal och godkännande, hjälper till att förhindra systemets sårbarheter. Därför syftar denna forskning till att förbättra och undersöka en online-auktionsplattform genom att använda ett smart avtal med Blockchain för att ge upplevande användarupplevelser.
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Herraiz, Faixó Ferran. "Evolving to Digital and Programmable Value Based Economy: General Prospect and Specific Applications over Sustainability." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/668220.

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In the fields of economics, business and management, how could Digital Transformation (DT) advance value creation and reliably encourage value capture, exchange and distribution? This thesis aim to fill that gap with a novel framework to support policy-makers, countries, cities and businesses address the potential value that can be generated and captured by digitalization combining DT and Internet of Value theoretical perspectives and practical applications of them over concrete issues such as sustainability in cities, as an example. For this, it is proposed to make new contributions related to DT and Internet of Value in two main aspects: to explore DT countries’ mindsets when it relates to their value progress through Digital Ecosystems and to advance with the potential digital value applications through Programmable Economy advantages when it focus on concrete aspect such as sustainability in cities. Both perspectives, although it will be applied on different dimensions and on different purposes, have in common that they are focus on digital and programable value based economy and management and want to explore the best way to maximize and capture the DT potential in terms of value for organizations and society. Thus, first, it will be analysed the importance of knowing clearly the digital ecosystem in which the agents are operating in order to reinforce the value creation by promoting the inclusivity and connectivity of the endpoints involved in it. Secondly, it will be analysed how the digital value can be captured, exchanged and redistributed in a complex issues such as sustainability by deploying concrete digital applications that include human reinforcement aspects to, finally, closing the circle combining both perspectives in a single framework. To achieve these objectives in this thesis, own models are proposed, inspired by other theoretical models already contrasted, and some proven methodologies are used related to Conditional Probability, Forgotten Effects and Fuzzy Sets. As a main conclusion, Digital Transformation has the potential to generate immense value for economy and society. Although currently the capture of the vast majority of it is not guaranteed and its distribution between agents is no clear, new formulas are being explored supported by the Internet of Value. This thesis defends that if agents want to advance value creation and encourage value capture, they should consider to make their own Digital and Programmable Value Based Economy and Management framework through: - Allowing all functional agents work in a Digital Ecosystem embracing new relationships and ways of collaborating pursuing the same purpose. - Deploying Programmable Economy applications advantages, mixing digital's and analogue's world that can be interlinked and programmed by the blockchain allowing monetization and exploring new human and machine alliances. - Adopting strong and inclusive agents’ commitment in order to exploit the advantages that this smart economy system has from a human centric vision, discovering new forms of value, considering that, although tech can be everywhere, value not.
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Books on the topic "Blockchains (Databases)"

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Rijmenam, Mark Van, and Philippa Ryan. Blockchain. Taylor & Francis Group, 2018.

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Kwok, Angela, Weimin Sun, and Xun (Brian) Wu. Security Tokens and Stablecoins Quick Start Guide: Learn How to Build STO and Stablecoin Decentralized Applications. Packt Publishing, Limited, 2019.

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Rijmenam, Mark Van, and Philippa Ryan. Blockchain: Transforming Your Business and Our World. Taylor & Francis Group, 2018.

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Chen, Xiaofeng, Elisa Bertino, Kuan-Ching Li, and Hai Jiang. Essentials of Blockchain Technology. Taylor & Francis Group, 2019.

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Gaur, Nitin, Jerry Cuomo, and Jai Arun. Blockchain for Business. Pearson Education, Limited, 2019.

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Advanced Blockchain Development: Build Highly Secure, Decentralized Applications and Conduct Secure Transactions. Packt Publishing, Limited, 2019.

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Quiniou, Matthieu. Blockchain: The Advent of Disintermediation. Wiley & Sons, Incorporated, John, 2019.

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Wang, Harry, Liang-Jie Zhang, and Shiping Chen. Blockchain – ICBC 2018: First International Conference, Held as Part of the Services Conference Federation, SCF 2018, Seattle, WA, USA, June 25-30, ... Springer, 2018.

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James, Febin John. Ripple Quick Start Guide: Get Started with XRP and Develop Applications on Ripple's Blockchain. Packt Publishing, Limited, 2018.

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Welfare, Antony. Commercializing Blockchain: Strategic Applications in the Real World. Wiley & Sons, Limited, John, 2019.

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Book chapters on the topic "Blockchains (Databases)"

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Ruan, Pingcheng, Tien Tuan Anh Dinh, Dumitrel Loghin, Meihui Zhang, and Gang Chen. "Blockchains and Distributed Databases." In Synthesis Lectures on Data Management, 13–33. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-13979-6_2.

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Agrawal, Divyakant, Amr El Abbadi, Mohammad Javad Amiri, Sujaya Maiyya, and Victor Zakhary. "Blockchains and Databases: Opportunities and Challenges for the Permissioned and the Permissionless." In Advances in Databases and Information Systems, 3–7. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54832-2_1.

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Buzharovski, Spiro. "Database Setup." In Introducing Blockchain with Java, 39–63. Berkeley, CA: Apress, 2022. http://dx.doi.org/10.1007/978-1-4842-7927-4_3.

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Sangui, Smarta, Suman Das, and Swarup Kr Ghosh. "Secured Blockchain-Based Database for Storing Sensitive Information for Access Control IoT Systems." In Blockchain, 209–19. Boca Raton: Chapman and Hall/CRC, 2022. http://dx.doi.org/10.1201/9781003203957-15.

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Lampreia, Suzana, Teresa Morgado, Helena Navas, Valter Vairinhos, Victor Lobo, and João Alves. "Blockchain in a Maintenance Database." In Driving Quality Management and Sustainability in VUCA Environments, 123–33. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-52723-4_10.

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Chitti, Phani, Jordan Murkin, and Ruzanna Chitchyan. "Data Management: Relational vs Blockchain Databases." In Lecture Notes in Business Information Processing, 189–200. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20948-3_17.

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Kramberger, Renata, Tatjana Welzer, and Aida Kamišalić. "A Preliminary Review on Complementary Applications of Databases and Blockchain Technology." In Blockchain and Applications, 161–70. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-86162-9_16.

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Ramasamy, Lakshmana Kumar, and Firoz Khan. "Utilizing Blockchain for a Decentralized Database of Educational Credentials." In Blockchain for Global Education, 19–35. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-52123-2_2.

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Rehmani, Mubashir Husain. "Blockchain Technology and Database Management System." In Blockchain Systems and Communication Networks: From Concepts to Implementation, 15–22. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71788-9_2.

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Zhang, Yan. "Blockchain for Digital Twin." In Digital Twin, 61–69. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-51819-5_5.

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AbstractSecurity and privacy are critical issues in digital twin edge networks. Blockchain, as a tamper-proof distributed database, is a promising solution for protecting data and edge resource sharing in digital twin edge networks. In this chapter, we first introduce the architecture of the blockchain-empowered digital twin edge network, to show the integration angles of the blockchain and digital twin techniques. Then, we show the block generation and consensus process in the developed blockchain-empowered digital twin edge network architecture.
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Conference papers on the topic "Blockchains (Databases)"

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Sá, Rafael Avilar, Leonardo Oliveira Moreira, and Javam de Castro Machado. "A modular approach to Hybrid Blockchain-based and Relational Database Architectures." In Simpósio Brasileiro de Banco de Dados. Sociedade Brasileira de Computação - SBC, 2022. http://dx.doi.org/10.5753/sbbd_estendido.2022.21858.

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In this new cloud-powered web landscape, applications may find it beneficial to focus on both efficient data storage and proper security enforcement. Blockchains provides immutable and irrefutable data, but can be quite slow, while relational databases show great efficiency. MOON is a tool designed to act as a bridge between application and databases to create a hybrid approach to database management. It enables the use of both a Relational Database and a Blockchain-based database. This paper analyzes and proposes improvements to MOON's architecture to increase compatibility, maintainability, and help advance research into the area of convergence between blockchain and traditional databases.
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Ruan, Pingcheng, Tien Tuan Anh Dinh, Dumitrel Loghin, Meihui Zhang, Gang Chen, Qian Lin, and Beng Chin Ooi. "Blockchains vs. Distributed Databases." In SIGMOD/PODS '21: International Conference on Management of Data. New York, NY, USA: ACM, 2021. http://dx.doi.org/10.1145/3448016.3452789.

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Mohan, C. "Blockchains and Databases: A New Era in Distributed Computing." In 2018 IEEE 34th International Conference on Data Engineering (ICDE). IEEE, 2018. http://dx.doi.org/10.1109/icde.2018.00227.

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Sá, Rafael Avilar, Leonardo O. Moreira, and Javam C. Machado. "Improving Interoperability between Relational and Blockchain-based Database Systems: A Middleware approach." In Simpósio Brasileiro de Banco de Dados. Sociedade Brasileira de Computação - SBC, 2023. http://dx.doi.org/10.5753/sbbd.2023.232503.

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Multi-model, federated and polystore architectures allow for querying data from different sources through a unified interface, providing interoperability for databases. However, support for blockchain-based databases remains scarce. MOON is a middleware designed to enable cross-model querying of data in relational and blockchain databases through standard SQL syntax. This paper aims to promote the interoperability of blockchain-based and relational database systems through a new approach, called Inter-MOON. Through experimentation, Inter-MOON was found to offer near-total support for SQL DML query syntax, be up to 10x faster than MOON, and show comparable performance to similar tools.
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El-Hindi, Muhammad, Martin Heyden, Carsten Binnig, Ravi Ramamurthy, Arvind Arasu, and Donald Kossmann. "BlockchainDB - Towards a Shared Database on Blockchains." In SIGMOD/PODS '19: International Conference on Management of Data. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3299869.3320237.

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Kadry, Heba Ahmed. "Carbon Footprint Management Using Blockchain." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/210930-ms.

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Abstract There is a broad consensus that greenhouse gas emissions management requires coordinated efforts and collaboration in all sectors and at all levels of an organization or within the value chain. However, potential conflicts of interest and lack of trust between stakeholders make this collaboration extremely challenging. Blockchain has opened the door for a series of innovative applications that can propose an efficient carbon footprint traceability and management solution. Blockchain is a distributed secure database, called a ledger, among different parties, used to hold and verify tamper-proof records or transactions without the need to trust any participant of this process except the mechanism. In the race to net zero, the need for an advanced information and communication technology has become vital to global climate change management with increased digitalization, decarbonization, security, and decentralization challenges. Blockchain is proposed as an integrated platform for various applications, such as carbon traceability, carbon trading, certification, and value chain management. This work presents an overview of blockchain technology and its working principles. It describes blockchain's novelty and innovation to the industry and climate action. Also, the paper investigates blockchain's potential for carbon footprint traceability and management. It explores the latest use cases and the current challenges. It concludes that enabling innovation for climate action requires digging further into evolving disruptive technologies such as blockchain.
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Adkins, Daniel, Archita Agarwal, Seny Kamara, and Tarik Moataz. "Encrypted Blockchain Databases." In AFT '20: 2nd ACM Conference on Advances in Financial Technologies. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3419614.3423266.

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Yu, John P., Pedro Arredondo, and Jason Cotton. "Blockchain Database Applications in UIC at Kern County." In SPE Western Regional Meeting. SPE, 2022. http://dx.doi.org/10.2118/209244-ms.

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Abstract Kern County has a population of 900,000 and has been ranked as one of the nation's most productive in both agriculture and petroleum generation. The petroleum industry often requires the injection of water, gas, or other fluids to enhance oil recovery. The possibility of underground water contamination can be of concern in this region where petroleum operations occur alongside drinking water extraction processes. Kern County's petroleum production plays a vital economic role on both a local and national level. Similarly, underground aquifers contain uncontaminated water that is a significant source of municipal drinking water and supply to large-scale agriculture operations. Due to this adjacency, both industry and regulatory agencies closely scrutinize operations to ensure human and environmental health. The blockchain is a developing peer-to-peer network technology for securely distributing and storing data. A blockchain network consists of several peers, each capable of creating blocks and validating blocks, each with an identical copy of the current blockchain. These blocks consist of transactions, or any type of data record, that have been submitted to the network for validation. Once enough transactions have been submitted, they are bundled into a block which is hashed with the hash of the previous block to create a unique identifier. The regulatory agencies will not be able to make changes except review and approve the project. The block and identifier are then transmitted to every other peer on the network. If the identifier is found to be valid, meaning that the data stored in the sending peer's blockchain has not been altered, the block is added to the receiving peer's local copy. This allows the blockchain to act as immutable ledger, making it an excellent choice for distributing data while maintaining its integrity. Therefore, we can use this secure blockchain network for the underground injection control (UIC) process. We have successfully built a prototype blockchain database and implement an underground injection control (UIC) project in the database. The East Shallow Oil Zone (ESOZ) Fault Block 7A is used for the field case study. All requested documents in the project #22800007 input as the Well Summary GUI and the Regulatory GUI pages for the project review and approval.
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Khan, Nida, Tabrez Ahmad, and Radu State. "Blockchain-based micropayment systems." In the 23rd International Database Applications & Engineering Symposium. New York, New York, USA: ACM Press, 2019. http://dx.doi.org/10.1145/3331076.3331096.

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Zhu, Yanchao, Zhao Zhang, Cheqing Jin, Aoying Zhou, and Ying Yan. "SEBDB: Semantics Empowered BlockChain DataBase." In 2019 IEEE 35th International Conference on Data Engineering (ICDE). IEEE, 2019. http://dx.doi.org/10.1109/icde.2019.00198.

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Reports on the topic "Blockchains (Databases)"

1

Beoku-Betts, Iman, and Tom Kaye. EdTech Horizon Scan: Blockchain technology in education. EdTech Hub, July 2022. http://dx.doi.org/10.53832/edtechhub.0101.

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EdTech Hub horizon scans are publications designed to provoke thinking on a range of topics related to the design, implementation, oversight, and monitoring and evaluation of educational technology (EdTech) tools, products, services, and related ideas. This EdTech Horizon Scan examines the use of blockchain technology in education. Beginning with an overview of blockchain technology, the scan explains what blockchain technology is and how it works. The next section focusses on how blockchain technology can be used in education. In particular, it looks at the benefits of using blockchain technology for micro-credentialing and ownership of learning credentials, the transfer of credits and smart contracts, storing student credentials, identity verification and intellectual property protection. Section 4 gives a summary of the use of blockchain technology, noting the different challenges that may be associated with adopting blockchain technology into education systems. Section 5, gives real examples of the use of blockchain technology in education and different education institutions. Key words: blockchain; cryptography; data; decentralised database; digitalisation; education; micro-credentialing; smart contracting; student credentials; verification An output of the EdTech Hub, https://edtechhub.org
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