Ledger最新文献_第2页

HLF-Kubed: Blockchain-Based Resource Monitoring for Edge Clusters HLF-Kubed:基于区块链的边缘集群资源监控

IF 0.7

Ledger Pub Date : 2022-01-01 DOI: 10.5195/ledger.2022.230

Achilleas Tzenetopoulos, Dimosthenis Masouros, Nikolaos Kapsoulis, A. Litke, D. Soudris, T. Varvarigou

{"title":"HLF-Kubed: Blockchain-Based Resource Monitoring for Edge Clusters","authors":"Achilleas Tzenetopoulos, Dimosthenis Masouros, Nikolaos Kapsoulis, A. Litke, D. Soudris, T. Varvarigou","doi":"10.5195/ledger.2022.230","DOIUrl":"https://doi.org/10.5195/ledger.2022.230","url":null,"abstract":". In the past several years, there has been an increased usage of smart, always-connected devices at the edge of the network, which provide real-time contextual information with low overhead to optimize processes and improve how companies and individuals interact, work, and live. The efﬁcient management of this huge pool of devices requires runtime monitoring to identify potential performance bottlenecks and physical defects. Typical solutions, where monitoring data are aggregated in a centralized manner, soon become inefﬁcient, as they are unable to handle the increased load and become single points of failure. In addition, the resource-constrained nature of edge devices calls for low-overhead monitoring systems. In this paper, we propose HLF-Kubed , a blockchain-based, highly available framework for monitoring edge devices, leveraging distributed ledger technology. HLF-Kubed builds upon Kubernetes container orchestrator and HyperLedger Fabric frameworks and implements a smart contract through an external chaincode for resource usage storing and querying. Our experimental results show that our proposed setup forms a low-overhead monitoring solution, with an average of 448 MB of memory and 6.8% CPU usage, while introducing 1.1s end-to-end latency for store operation and 0.6s for ledger querying respectively.","PeriodicalId":36240,"journal":{"name":"Ledger","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70754387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A Note on the Cover Art for Volume 6 (2021) 2021年第6卷封面艺术札记

IF 0.7

Ledger Pub Date : 2021-12-16 DOI: 10.5195/ledger.2021.259

Ledger

引用次数: 0

A Decentralized Identity-Based Blockchain Solution for Privacy-Preserving Licensing of Individual-Controlled Data to Prevent Unauthorized Secondary Data Usage 一种基于身份的去中心化区块链解决方案，用于个人受控数据的隐私保护许可，以防止未经授权的二次数据使用

IF 0.7

Ledger Pub Date : 2021-11-23 DOI: 10.5195/ledger.2021.239

Meng-Chow Kang, V. Lemieux

{"title":"A Decentralized Identity-Based Blockchain Solution for Privacy-Preserving Licensing of Individual-Controlled Data to Prevent Unauthorized Secondary Data Usage","authors":"Meng-Chow Kang, V. Lemieux","doi":"10.5195/ledger.2021.239","DOIUrl":"https://doi.org/10.5195/ledger.2021.239","url":null,"abstract":"This paper presents a design for a blockchain solution aimed at the prevention of unauthorized secondary use of data. This solution brings together advances from the fields of identity management, confidential computing, and advanced data usage control. In the area of identity management, the solution is aligned with emerging decentralized identity standards: decentralized identifiers (DIDs), DID communication and verifiable credentials (VCs). In respect to confidential computing, the Cheon-Kim-Kim-Song (CKKS) fully homomorphic encryption (FHE) scheme is incorporated with the system to protect the privacy of the individual’s data and prevent unauthorized secondary use when being shared with potential users. In the area of advanced data usage control, the solution leverages the PRIV-DRM solution architecture to derive a novel approach to licensing of data usage to prevent unauthorized secondary usage of data held by individuals. Specifically, our design covers necessary roles in the data-sharing ecosystem: the issuer of personal data, the individual holder of the personal data (i.e., the data subject), a trusted data storage manager, a trusted license distributor, and the data consumer. The proof-of-concept implementation utilizes the decentralized identity framework being developed by the Hyperledger Indy/Aries project. A genomic data licensing use case is evaluated, which shows the feasibility and scalability of the solution.","PeriodicalId":36240,"journal":{"name":"Ledger","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47547424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Strategic Diversification for Asynchronous Asset Trading: Insights from Generalized Coherence Analysis of Cryptocurrency Price Movements 异步资产交易的战略多元化：加密货币价格波动的广义一致性分析

IF 0.7

Ledger Pub Date : 2021-09-23 DOI: 10.5195/ledger.2021.227

Nirvik Sinha, Yuan Yang

{"title":"Strategic Diversification for Asynchronous Asset Trading: Insights from Generalized Coherence Analysis of Cryptocurrency Price Movements","authors":"Nirvik Sinha, Yuan Yang","doi":"10.5195/ledger.2021.227","DOIUrl":"https://doi.org/10.5195/ledger.2021.227","url":null,"abstract":"Non-linear interactions between cryptocurrency price movements can elicit cross-frequency coupling (CFC) wherein one set of frequencies in the 1st timeseries is coupled to another set of frequencies in the 2nd timeseries. To investigate this, we use a generalized coherence approach to detect and quantify both linear (i.e., iso-frequency coupling, IFC) and non-linear coherence (CFC) and the associated phase relationships between the intra-day price changes of various pairs of cryptocurrencies for the year 2020. Using this information, we further assess the risk reduction associated with diversification of portfolios between each pair of a small market capital and a large market capital cryptocurrency, for both synchronous and asynchronous trading conditions. While mean pairwise IFC values were lower for smaller cryptocurrencies, pairwise CFC values were more heterogeneous and had no correlation with the market capital size. Diversification of portfolios resulted in reduced risk for synchronously-traded pairs of those cryptocurrencies which had low IFC. For asynchronous trading conditions, if the larger market capital cryptocurrency was traded at a higher frequency, diversification almost always reduced risk. Thus, the novel approach used in this study reveals important insights into the complex dynamics that govern the price trends of cryptocurrencies.","PeriodicalId":36240,"journal":{"name":"Ledger","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47339662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

On the Intraday Behavior of Bitcoin 关于比特币的盘中行为

IF 0.7

Ledger Pub Date : 2021-07-12 DOI: 10.5195/LEDGER.2021.213

Giacomo De Nicola

引用次数: 0

Enhancing Electronic Voting With A Dual-Blockchain Architecture 利用双区块链架构增强电子投票

IF 0.7

Ledger Pub Date : 2021-03-19 DOI: 10.5195/LEDGER.2021.199

Kees Leune, Jai Punjwani

引用次数: 0

New Crypto-Secured Lending System with a Two-Way Collateral Function 具有双向担保功能的新型加密担保贷款系统

IF 0.7

Ledger Pub Date : 2021-01-01 DOI: 10.5195/ledger.2021.215

Sungil Kim

引用次数: 4

Benchmarking Bitcoin Adoption in Canada: Awareness, Ownership and Usage in 2018 加拿大比特币采用的基准:2018年的意识、所有权和使用

IF 0.7

Ledger Pub Date : 2020-11-10 DOI: 10.5195/ledger.2020.206

Kim P. Huynh, Christopher S. Henry, Gradon Nicholls, Mitchell Nicholson

引用次数: 5

Legitimizing Bitcoin as a Currency and Store of Value: Using Discrete Monetary Units to Consolidate Value and Drive Market Growth 将比特币作为货币和价值储存合法化:使用离散货币单位巩固价值并推动市场增长

IF 0.7

Ledger Pub Date : 2020-04-06 DOI: 10.5195/ledger.2020.167

Chad Albrecht, S. Hawkins, Kristopher McKay Duffin

{"title":"Legitimizing Bitcoin as a Currency and Store of Value: Using Discrete Monetary Units to Consolidate Value and Drive Market Growth","authors":"Chad Albrecht, S. Hawkins, Kristopher McKay Duffin","doi":"10.5195/ledger.2020.167","DOIUrl":"https://doi.org/10.5195/ledger.2020.167","url":null,"abstract":"Cryptocurrency, and especially Bitcoin, has struggled to gain recognition as a legitimate currency from governments, financial institutions, and consumers. This has occurred because many analysts and consumers believe that Bitcoin is not a stable and consistent store of value, a unit of measurement, or a medium of exchange. One way to overcome this challenge is for Bitcoin to be used as both a currency and store of value by a greater percentage of the world’s population. This paper seeks to identify how a change in Bitcoin’s monetary measurement (or denomination) can more easily facilitate Bitcoin transactions to increase its use. Specifically, we posit that applying whole number bias theory, from the cognitive psychology and mathematics fields, to Bitcoin’s unit of measurement will allow the value of Bitcoin to be referenced in smaller and easier tounderstand units with fewer numbers after the decimal point—such as the “Bit” or the “Satoshi.” In the process, the use of Bitcoin will include more whole numbers and allow the general public to more easily assign value to Bitcoin in day-to-day transactions.","PeriodicalId":36240,"journal":{"name":"Ledger","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2020-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41947107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Real-Time Block Rate Targeting 实时块率定位

IF 0.7

Ledger Pub Date : 2020-04-06 DOI: 10.5195/ledger.2020.195

T. M. Harding

引用次数: 3