【Author】 Ashraf, Mahmoud Ali, Islam
【影响因子】9.040
【主题类别】
区块链技术-核心技术-智能合约
区块链应用-实体经济-供应链
【Abstract】Disruption risks may arise in a project-based supply chain due to the involvement of various actors, e.g. suppliers and transport service providers, along the chain besides its decentralised structure. This paper addresses monitoring the project completion time estimates at different stages of a project lifetime through tracking package ownership transfer events. We track the ownership transfer events by employing blockchain technology and smart contracts. Blockchain technology offers data security and builds trust along the supply chain. Consequently, a blockchain-enabled tracking system for package ownership transfer enhances real-time monitoring of project completion time estimates. In addition, this paper uses a simulation-based approach to quantify the acquired benefits from a real-time blockchain-enabled traceability system in a project-based supply chain. The proposed approach considers a straightforward supply chain consisting of two parties. Our proposed approach examines multiple disruption scenarios to assess the impact of blockchain technology integration on the project completion time estimates accuracy. The results show, for all scenarios, the superior performance of the blockchain-enabled traceability system compared to the baseline model with limited tracking of ownership transfer events.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain; smart contracts; project management; supply chain management; supply chain disruption; logistics; simulation
【发表时间】
【收录时间】2023-01-13
【文献类型】 实验仿真
【Author】 Afzal, Muhammad Li, Jian Amin, Waqas Huang, Qi Umer, Khalid Ahmad, Syed Adrees Ahmad, Fayyaz Raza, Asif
【影响因子】7.632
【主题类别】
区块链应用-实体经济-能源领域
【Abstract】An efficient, secure and transparent distributed electricity market system can be realized by integrating various technologies like internet of things, energy internet and blockchain. Recently, application of blockchain technology in transactive energy market for electricity trading has become prevalent both in industry and academia. The purpose of this work to explore the potential and contribution of energy blockchain development in distributed power and energy market by reviewing the scientific research based on the concept of blockchain technology applications and optimization in transactive energy market. In this paper, the types of blockchain technology, consensus algorithms, and smart contracts for peer-to-peer energy market are categorized. Moreover, this work provides a perspective on the transformation of traditional market into the next-generation market by blockchain technology. Finally, this work provides an overview of various kinds of objective functions and solution approaches used in the power market to achieve optimal goals. Thus, this work provides a useful reference to the researcher related to blockchain technology in transactive energy market.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Peer-to-peer; Internet of Things; Distributed power market; Blockchain technology; Smart contracts; Consensus; Transactive energy market
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 综述
【Author】 Su, Jung-Bin Kao, Yu-Sheng
【影响因子】6.461
【主题类别】
区块链治理-市场治理-市场分析
【Abstract】This study examines how the COVID-19 pandemic crisis affects the interactions between the stock, oil, gold, currency, and cryptocurrency markets. The impacts of the COVID-19 pandemic crisis on the optimal asset allocation and optimal hedged strategy are also discussed. Empirical results show that the volatility spillover significantly exists in most of the ten paired markets whereas the return spillover and correlation are significant only for the few paired markets. Moreover, the impact of the COVID-19 pandemic on the return spillover is the greatest followed by the correlation whereas the volatility spillover is not affected by the COVID-19 pandemic. Furthermore, the Quantitative easing (QE) implemented after the COVID-19 pandemic crisis increases the risk-adjusted return for each asset and minimum variance portfolio (MVP) and raises the correlation between two assets. In addition, most of the pairs of assets are not suitable to hedge each other except for a few pairs of assets. Regarding these few pairs of assets, the optimal hedge asset with the fewer hedge cost is accompanied by less risk reduction and vice versa. Finally, the investors should choose the euro to construct a portfolio to achieve risk diversification and to hedge gold or WTI to get the risk reduction. The above findings can help investors and fund managers make a useful investment strategy, optimal asset allocation, and effective hedged strategy. For example, the investors can use the volatility of one market to predict the volatility of another market and they can take a long position during the post-COVID-19 period but they should withdraw capital from the market when the QE tapering is executed. JEL classificationC52; C53; G15.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】bivariate GARCH model; COVID-19 pandemic; volatility spillover; asset allocation; hedged strategy; hedge cost; risk reduction
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 实验仿真
【Author】 Vega-Marcos, Raul Colmenar-Santos, Antonio Mur-Perez, Francisco Perez-Molina, Clara Rosales-Asensio, Enrique
【影响因子】4.937
【主题类别】
区块链治理-市场治理-数字货币
【Abstract】The Green Pact signed by the European Union establishes a trend towards renewable energies to combat the greenhouse gas emissions. Among the technologies used to produce this type of energy, wind power generation technology stands out, which, in countries such as Spain, already has significant installed power. The main problems posed by this technology plans are the uncertainty intervals of wind power and its inclusion in the electricity market, due to the complex price system that does not always favor the producers. The main purpose of this research is to promote the installation of more wind power plants. For this, the installation of cryptocurrency mining equipment is proposed, which will be powered by the generation produced by these wind power plants. The article analyzes the production of cryptocurrencies is a growing business. In the research process, the latest cryptocurrency mining equipment is evaluated. It is analyzed which equipment is the most suitable for its installation in the wind power plant and an economic study is made for the construction project of a large wind power plant. Finally, it will be seen that in this way the amortization time of the facilities decreases and also the project is more attractive for the investor since they can decide between injecting energy into the electrical network or mining cryptocurrencies. If a wind power plant invests in cryptocurrency mining in parallel to the production of electrical energy for the grid, it can decide when to enter the electricity market pool or engage in mining. In this way, the idea of building many more wind power plants becomes more attractive. This would lead to a market where this renewable energy would be much more abundant and the price curve would shift to a lower price, as well as a significant reduction in greenhouse emissions. (C) 2022 The Author(s). Published by Elsevier Ltd.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Cryptocurrencies; Mined; Wind power
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 观点阐述
【Author】 Siddiquee, S. M. Shahnewaz Khan, Md. Mosaraf Hossain Al-Ismail, Fahad Saleh Ullah, Aasim Alam, Md. Shafiul Ahmed, Hafiz
【影响因子】4.937
【主题类别】
区块链应用-实体经济-智慧城市领域
【Abstract】The advancement in blockchain applications in the smart sustainable city infrastructure is evaluated in this paper through a comprehensive mapping review. The evaluation is carried out by posing four research questions that address current developments in blockchain technology in the context of smart cities and point out areas where additional study is needed. This study also includes a scoping of blockchain applications in a smart city context to highlight the obstacles to incorporating blockchain technology into smart city infrastructure. Finally, some suggestions for overcoming the problems of incorporating blockchain technology with smart city infrastructure are offered. This research will help researchers and policymakers gain a better understanding of blockchain applications in smart cities. (C) 2022 The Author(s). Published by Elsevier Ltd.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Smart city; Sustainable environment; Blockchain; Mapping study
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 综述
【影响因子】4.937
【主题类别】
区块链应用-实体经济-能源领域
【Abstract】Blockchain technology provides the possibility for the realization of decentralized energy trading. However, the blockchain confronts privacy risks and efficiency issues, which hinder its application in energy trading. In this paper, to solve this problem, we propose an efficient and privacy-preserving decentralized energy trading scheme in a blockchain environment. We propose an account mapping algorithm to solve the privacy attack problem. We propose a new transaction processing method, which can protect private data and improve execution efficiency by two-layer transaction processing. Finally, we verify the effectiveness of the proposed scheme for privacy protection and trading efficiency of decentralized energy transactions through experiments. (C) 2022 The Author(s). Published by Elsevier Ltd.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Decentralized energy trading; Blockchain; Privacy-preserving; Efficient; Account mapping
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 理论模型
【Author】 Alshareef, Nasser Tunio, Muhammad Nawaz
【影响因子】4.232
【主题类别】
区块链治理-市场治理-技术采用
【Abstract】
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】SME's; financing; blockchain; Saudi Arabia; distributed ledger technology (DLT)
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 观点阐述
【Author】 Zhou, Fuli Liu, Yijie
【影响因子】3.889
【主题类别】
区块链应用-实体经济-电商领域
【Abstract】Driven by the internet-based advanced information technologies and logistics channel improvement, the cross-border e-commerce industry keeps an increasing trend in Chinese industrial market. Blockchain, as an empowered technology, contributes to the management innovations for industrial sectors. The blockchain technology, due to its transparency, visibility, and dis-intermediation characteristics, helps to improve operations management of cross-border e-commerce supply chain by innovative industrial applications. However, practical applications of the blockchain technique-enabled cross-border e-commerce sector are still in their infancy and still at the proof-of-concept stage. This paper presents a systematic review on blockchain-enabled cross-border e-commerce supply chain management by employing a bibliometric data-driven analysis. All relevant publications from the Web of Science database from 2013 to 2021 were collected as the research samples. Besides, the VosViewer is adopted to conduct the network and co-word study by visualizing collaborative relationships of sampled literatures. Results show that the blockchain technique has substantial applications in the field of cross-border e-commerce supply chain, whose contributions mainly focus on cross-border e-commerce platform, supply chain operations, and data governance and information management. Academic researchers and industrial managers can promote innovative management practices in cross-border e-commerce supply chain by adopting blockchain. Moreover, we hope this study serves as a future direction for both researchers and engineers on leveraging blockchain to improve the supply chain management performance of the cross-border e-commerce.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】blockchain; cross-border e-commerce; supply chain management; bibliometric analysis
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 综述
【DOI】 10.3390/su142315918
【影响因子】3.847
【主题类别】
区块链治理-技术治理-区块链安全
【Abstract】In the blockchain system, mining pools are popular for miners to work collectively and obtain more revenue. Nowadays, there are consensus attacks that threaten the efficiency and security of mining pools. As a new type of consensus attack, the Fork After Withholding (FAW) attack can cause huge economic losses to mining pools. Currently, there are a few evaluation tools for FAW attacks, but it is still difficult to evaluate the FAW attack protection capability of target mining pools. To address the above problem, this paper proposes a novel evaluation framework for FAW attack protection of the target mining pools in blockchain systems. In this framework, we establish the revenue model for mining pools, including honest consensus revenue, block withholding revenue, successful fork revenue, and consensus cost. We also establish the revenue functions of target mining pools and other mining pools, respectively. In particular, we propose an efficient computing power allocation optimization algorithm (CPAOA) for FAW attacks against multiple target mining pools. We propose a model-solving algorithm based on improved Aquila optimization by improving the selection mechanism in different optimization stages, which can increase the convergence speed of the model solution and help find the optimal solution in computing power allocation. Furthermore, to greatly reduce the possibility of falling into local optimal solutions, we propose a solution update mechanism that combines the idea of scout bees in an artificial bee colony optimization algorithm and the constraint of allocating computing power. The experimental results show that the framework can effectively evaluate the revenue of various mining pools. CPAOA can quickly and accurately allocate the computing power of FAW attacks according to the computing power of the target mining pool. Thus, the proposed evaluation framework can effectively help evaluate the FAW attack protection capability of multiple target mining pools and ensure the security of the blockchain system.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】blockchain; faw attack; evaluation method; revenue model; computing power allocation optimization
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 理论模型
【DOI】 10.3390/s22239125
【影响因子】3.476
【主题类别】
区块链应用-实体经济-能源领域
【Abstract】Nowadays, energy trading policies are revolutionizing the efforts and policies geared toward addressing global carbon emissions and protecting the environment. Smart grids and electric vehicles (EVs) are energy-saving tools for efficient power management. Although EVs can act as both energy consumers and suppliers, the effort required to balance the energy supply and demand in typical centralized trading systems inevitably reduces trading reliability. Another challenge is distributing EVs' energy rationally to achieve better demand response and energy utilization. To manage the market securely and efficiently, we propose V2GNet(AEBiS Project: https://web-ext.u-aizu.ac.jp/misc/benablab/aebis.html), a blockchain-based energy trading system using the vehicle-to-grid (V2G) network. The system combines a blockchain of energy exchanges (BoE) and a blockchain of EVs (BoEV), with the distinct transmission of energy requests and offers. Furthermore, to consider energy management from an economic viewpoint, we address the attack issue by proposing a robust energy trading (RET) algorithm. The proposed system demonstrates high robustness to malicious attacks. Our experimental results show that the RET reduces 30% energy loss when 20% of consumers are attacked. Moreover, malicious exchanges are excluded progressively from the trading market during each trading round. Also, the RET algorithm achieves better energy fulfillment and higher profit compared to state-of-the-art approaches.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Energy trading; electric vehicles; robustness; vehicle-to-grid
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 理论模型
【影响因子】2.690
【主题类别】
区块链技术-协同技术-边缘计算
【Abstract】A microgrid generates a large amount of power data during daily operation, which needs to be safely transferred, stored, and deleted. In this paper, we propose a secure storage and deletion verification scheme that combines blockchain and edge computing for the problems of limited storage capacity of blockchain and unverifiable data deletion. Firstly, edge computing is used to preprocess power data to reduce the amount of data and to improve the quality of data. Secondly, a hybrid encryption method that combines the improved ElGamal algorithm and the AES-256 algorithm is used to encrypt outsourcing data, and a secure storage chain is built based on the K-Raft consensus protocol to ensure the security of data in the transmission process. Finally, after initiating a data deletion request and successfully deleting the data, a deletion proof is generated and stored in the chain built, based on the Streamlet consensus protocol. The experimental results illustrate that the basic computing cost, block generation time, and communication delay of this scheme are the most efficient; the efficiency of the improved ElGamal algorithm is three times that of the traditional algorithm; the transaction throughput of the the double-layer blockchain can reach 13,000 tps at most. This scheme can realize the safe storage of microgrid data, and can also realize the efficient deletion and verification of outsourcing data.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】microgrid; blockchain; secure storage; deletion verification; K-Raft; Streamlet
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 理论模型
【影响因子】2.336
【主题类别】
区块链应用-实体经济-智慧校园
【Abstract】With the application of 5G technology in the field of education, the construction of smart campus has set off a wave of digital transformation. At the same time, the traditional smart campus is also facing the exponential growth of the number of Internet of Things devices, servers, and application terminals, which makes it difficult to achieve flat management. In view of the current difficulties in the construction of smart campus, this paper proposes smart campus architecture based on blockchain technology. Unlike the traditional smart campus architecture, this paper combines the characteristics of decentralization, high confidentiality, and data sharing of block chain with the Internet of Things technology, which greatly reduces the demand for data storage and physical network equipment. The new smart campus architecture plans the application of smart education based on blockchain, and provides a new solution model and research ideas.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 理论模型
【DOI】 10.1155/2022/2434277
【Author】 Iqbal, Jawaid Bibi, Hajira Ul Amin, Noor AlSalman, Hussain Ullah, Syed Sajid Hussain, Saddam Al-Aidroos, Naziha
【影响因子】2.336
【主题类别】
区块链应用-实体经济-无线传感器
【Abstract】Wireless body sensor networks (WBSNs) pose significant security and privacy risks. The Medical Server (MS) will only allow legitimate stakeholders access to confidential patient medical records when successful mutual authentication between all registered users and the MS has been confirmed using preset secret attributes. This paper proposes a novel approach to overcome the security and privacy problems in WBSNs by using CP-ABE and a consortium blockchain for key management and authentication. In this paper, a fixed-size session key is computed by utilizing several attribute base rules and AND/OR logic gate combinations. IEEE 802.15.6 is also used to transmit the encoded patient data from the register and legitimately deployed biosensor nodes on a patient's body to the Base Station nearby (BS). This was done in part by leveraging consortium blockchains to construct partial blocks and then, transmit the encrypted partial blocks to MS via peer-to-peer networks, as well as aggregating critical physiological information. MS is now validating partial blocks with a hash function to ensure their integrity before converting them all into full blocks, which are subsequently mined and put on the blockchain effectively and ideally using a consensus mechanism. When sessions between MS and stakeholders are established, all legitimate consumers can view the secure medical records of a registered patient in a hospital using their predefined access structure.. The resourceconstrained environment of WBSNs can benefit from enhanced data security and privacy by using CP-ABE in conjunction with the organization's consensus to encrypt the patient's critical features or attributes. Automated Validation of Internet Security Protocol and Applications (AVISPA) tool is used to verify the validity and correctness of the proposed authentication mechanism. The proposed scheme reduces transmission, processing and storage costs and energy usage by a significant margin when compared to current state-of-the-art alternatives. It is also worth noting that a multicriteria decision making (MCDM) approach known as Evaluation Based on Distance from Average Solution (EDAS) is employed to provide the ranking and determine which strategy is optimal across all of the domains involved.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 理论模型
【DOI】 10.1155/2022/2419992
【影响因子】2.303
【主题类别】
区块链技术-协同技术-边缘计算
区块链技术-协同技术-机器学习
【Abstract】It is difficult to manage massive amounts of data in an overlying environment with a single server. Therefore, it is necessary to comprehend the security provisions for erratic data in a dynamic environment. The authors are concerned about the security risk of vulnerable data in a Mobile Edge based distributive environment. As a result, edge computing appears to be an excellent perspective in which training can be done in an Edge-based environment. The combination of Edge computing and consensus approach of Blockchain in conjunction with machine learning techniques can further improve data security, mitigate the possibility of exposed data, and it reduces the risk of a data breach. As a result, the concept of federated learning provides a path for training the shared data. A dataset was collected that contained several vulnerable, exposed, recovered, and secured data and data security was precepted under the surveillance of two-factor authentication. This paper discusses the evolution of data and security flaws and their corresponding solutions in smart edge computing devices. The proposed model incorporates data security using consensus approach of Blockchain and machine learning techniques that include several classifiers and optimization techniques. Further, the authors applied the proposed algorithms in an edge computing environment by distributing several batches of data to different clients. As a result, the client privacy was maintained by using Blockchain servers. Furthermore, the authors segregated the client data into batches that were trained using the federated learning technique. The results obtained in this paper demonstrate the implementation of a Blockchain-based training model in an edge-based computing environment.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain technology; Edge computing; Federated learning systems; Machine learning techniques; Voting classifier
【发表时间】
【收录时间】2023-01-13
【文献类型】 理论模型
【影响因子】2.070
【主题类别】
区块链技术-协同技术-物联网
区块链应用-实体经济-供应链
【Abstract】This paper provide an overview of the benefits that the integration of IoT and Blockchain can produce on the Humanitarian Aid Supply Chain (HASC). Consdering the large number of partner involved in HASC, traditional centralized information systems become very vulnerable. In the same sense, the lack of mutual knowledge obstruct the needed cooperation. The joint use of IoT and Blockchain can overcome these problems. Main benefit as well as barriers to this implementation is analyzed, considering the diferent phases of the HASC.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Covid19; Blockchain; Supply Chain Management; Internet of Things; Humanitarian Supply Chain
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 理论模型
【DOI】 10.6036/10067
【影响因子】2.070
【主题类别】
区块链应用-实体经济-版权领域
【Abstract】
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】
【发表时间】2022
【收录时间】2023-01-13
【文献类型】 理论模型
【DOI】 10.6036/10294
【Author】 Preethi, S. Priyadharsini, C.
CCF-C
【影响因子】1.859
【主题类别】
区块链技术-核心技术-加密算法
区块链应用-实体经济-医疗领域
【Abstract】Healthcare management, it involves various processes such as managing finance, logistics, inventory, staff, and patients. Nowadays, a healthcare system also faces many challenges regarding trust, privacy, security, traceability, immutability, and so forth. Here, the traditional data collection and processing of Electronic Health Records is a centralized technique that faces several risks that may cause system failure and affect the system's reliability. This article aims to develop secured data management in the healthcare sector using blockchain technology and deep learning. Here, the data is collected in the patient node and encrypting the data by Hybrid Elliptic Curve-Rivest-Shamir-Adleman Cryptography (H-EC-RSAC). The institution nodes handle the data for analysis, in which the concept of an improved deep neural network (DNN) is utilized. In addition, the blockchain sector stores the index and address of health data. The modification is done in both H-EC-RSAC and improved DNN by a hybrid meta-heuristic algorithm called adaptive mixture ratio-based Spider Monkey-Cat Swarm Optimization (AM-SMCSO) for enhancing encryption and authentication performance. Throughout the analysis, the accuracy of the AM-SMCSO-H-EC-RSAC + DNN attains 93.8%. The precision of the designed method achieves 93.2%. The developed approach proves its ability to offer maximum security to healthcare data.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Adaptive mixture ratio-based spider monkey-cat swarm optimization; blockchain technology; cloud service provider; deep learning; healthcare sector; hybrid elliptic curve-Rivest-Shamir-Adleman cryptography; improved deep neural network; secure data management
【发表时间】
【收录时间】2023-01-13
【文献类型】 理论模型
【作者】 张天祥;李雷孝;刘东江;高昊昱;
【作者单位】内蒙古工业大学数据科学与应用学院;海南大学网络空间安全学院(密码学院);
【文献来源】计算机工程与应用
【复合影响因子】2.348
【综合影响因子】1.606
【主题类别】
区块链应用-实体经济-车联网领域
【摘要】近几年区块链成为解决车联网中安全问题的热门选择，产生了大量基于区块链的车联网解决方案。然而区块链部分节点由于激励不足不愿参与区块验证或共享意愿较低，导致车联网仍存在隐私泄露和信任缺失等安全问题。首先介绍了基于区块链的车联网解决方案的研究现状以及激励机制在物联网和车联网领域最主要的三种应用场景，其次从奖励类型角度划分了区块链激励机制在车联网领域的应用，并对每种激励在节点参与水平、提高效率、降低能耗、隐私安全和节点信任五方面做了全面对比，最后从区块链激励层面讨论了现阶段车联网面临的挑战以及未来研究方向，为未来加强基于区块链的车联网提供更多激励与安全层面的支持。
【关键词】区块链;;车联网;;激励机制;;隐私安全
【文献类型】 综述
【发表时间】2023-01-13
【作者】 杨定中;
【作者单位】中南民族大学实验教学与工程训练中心;中南民族大学创新创业学院;
【文献来源】实验技术与管理
【复合影响因子】
【综合影响因子】
【主题类别】
区块链技术-协同技术-物联网
区块链应用-实体经济-实验室安全
【摘要】安全追溯是保证实验室安全质量和支撑实验室安全工作的信息化手段之一，该文利用物联网对象标识技术、数据智能采集技术和区块链数据存储技术，构建支持指针式追朔模式与阶段式追朔模式的实验室安全可视化追朔体系。该追溯系统从技术层面保证追溯信息的宽度、深度和精度，实现实验室安全运行状态全流程实时动态监控与闭环管理，提升验室安全闭环管控的过程感知、风险识别、安全预警、安全追溯、应急处理和责任追查的能力，使得实验室安全事件正向可追朔、逆向可朔源、事前可防范、事中可监控、事后可追责，提高实验室安全信息化管理水平与治理能力。
【关键词】区块链;;物联网;;实验室安全;;追溯体系;;信息化;;可视化
【文献类型】 理论模型
【发表时间】2023-01-13