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Metaoracle:A High-Throughput Decentralized oracle for Web 3.0-Empowered Metaverse

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ZTE Communications 2024年第2期22卷 11-18页

作者： CHEN Rui LI Hui LI Wuyang BAI He WANG Han WU Naixing FAN Ping KANG Jian Selwyn DENG ZHU Xiang School of Electronic and Computer Engineering Peking UniversityShenzhen 518055China China United Network Communications Co. Ltd.Shenzhen BranchShenzhen 518031China

Recent rapid advancements in communication technology have brought forth the era of Web 3.0,representing a substantial transformation in the Internet landscape.This shift has led to the emergence of various decentralized metaverse applications that leverage blockchain as their underlying technology to enable users to exchange value directly from point to point.However,blockchains are blind to the real world,and smart contracts cannot directly access data from the external world.To address this limitation,the technology of oracles has been introduced to provide real-world data for smart contracts and other blockchain applications.In this paper,we focus on mitigating the risks associated with oracles providing corrupt or incorrect data.We propose a novel Web 3.0 architecture for the Metaverse based on the multiidentifier network(MIN),and its decentralized blockchain oracle model called Meta oracle.The experimental results show that the proposed scheme can achieve minor time investment in return for significantly more reliable data and increased throughput.

关键词： Web 3.0 metaverse blockchain smart contract oracle

Time Complexity of the oracle Phase in Grover’s Algorithm

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American Journal of Computational Mathematics 2024年第1期14卷 1-10页

作者： Ying Liu Department of Engineering Technology Savannah State University Savannah Georgia

Since Grover’s algorithm was first introduced, it has become a category of quantum algorithms that can be applied to many problems through the exploitation of quantum parallelism. The original application was the unstructured search problems with the time complexity of O(). In Grover’s algorithm, the key is oracle and Amplitude Amplification. In this paper, our purpose is to show through examples that, in general, the time complexity of the oracle Phase is O(N), not O(1). As a result, the time complexity of Grover’s algorithm is O(N), not O(). As a secondary purpose, we also attempt to restore the time complexity of Grover’s algorithm to its original form, O(), by introducing an O(1) parallel algorithm for unstructured search without repeated items, which will work for most cases. In the worst-case scenarios where the number of repeated items is O(N), the time complexity of the oracle Phase is still O(N) even after additional preprocessing.

关键词： Quantum Computing oracle Amplitude Amplification Grover’s Algorithm

维普期刊数据库博看期刊评论

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2008第三方物流——物流外包现状

中国物流与采购 2009年第3期 54-55页

作者： oracle DHL 侯玉陶凯捷咨询乔治亚理工大学

2008年年中，凯捷咨询、乔治哑理工大学、oracle、和DHL组成研究小组，共同研究发布了《2008第三方物流--物流外包现状》的研究报告。该报告共有1644名物流专家参与，内容涉及2008年第三方物流趋势及重大事件，研究结果主要涉及一体化... 详细信息

2008年年中，凯捷咨询、乔治哑理工大学、oracle、和DHL组成研究小组，共同研究发布了《2008第三方物流--物流外包现状》的研究报告。该报告共有1644名物流专家参与，内容涉及2008年第三方物流趋势及重大事件，研究结果主要涉及一体化物流、绿色供应链和供应链安全三个方面。这些研究结果可以有效帮助物流外包企业更好地理解、更有效地管理各方关系。

关键词：第三方物流物流外包现状绿色供应链 oracle 一体化物流专家参与重大事件

A General Framework for Intelligent IoT Data Acquisition and Sharing in an Untrusted Environment Based on Blockchain

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China Communications 2024年第3期21卷 137-148页

作者： Lu Yin Xue Yongtao Li Qingyuan Wu Luocheng Li Taosen Yang Peipei Zhu Hongbo College of Internet of Things Nanjing University of Posts and TelecommunicationsNanjing 210003China Key Lab of Broadband Wireless Communication and Sensor Network Technology(Nanjing University of Posts and Telecommunications) Ministry of EducationNanjing 210003China Jiangsu Key Laboratory of Wireless Communications Nanjing University of Posts and TelecommunicationsNanjing 210003China Research Institute of Internet of Things Nanjing University of Posts and TelecommunicationsNanjing 210003China Bell Honors School Nanjing University of Posts and TelecommunicationsNanjing 210023China School of Automation Nanjing University of Posts and TelecommunicationsNanjing 210023China

Traditional Io T systems suffer from high equipment management costs and difficulty in trustworthy data sharing caused by centralization.Blockchain provides a feasible research direction to solve these problems. The main challenge at this stage is to integrate the blockchain from the resourceconstrained Io T devices and ensure the data of Io T system is credible. We provide a general framework for intelligent Io T data acquisition and sharing in an untrusted environment based on the blockchain, where gateways become oracles. A distributed oracle network based on Byzantine Fault Tolerant algorithm is used to provide trusted data for the blockchain to make intelligent Io T data trustworthy. An aggregation contract is deployed to collect data from various oracle and share the credible data to all on-chain users. We also propose a gateway data aggregation scheme based on the REST API event publishing/subscribing mechanism which uses SQL to achieve flexible data aggregation. The experimental results show that the proposed scheme can alleviate the problem of limited performance of Io T equipment, make data reliable, and meet the diverse data needs on the chain.

关键词： blockchain data sharing Internet of Things oracle

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oracle数据库安全及参数配置

信息系统工程 2024年第3期 63-65页

作者：魏万琼王亦然中国石油勘探开发研究院西北分院计算机技术研究所中国石油天然气集团有限公司物联网重点实验室

oracle数据库在部署和使用之前决定是否部署安全措施很重要,用户在实施与维护的过程中都需要提前考虑好是否采取安全措施和实施安全策略。基于安全部署的数据库,可以为后期使用和等保测评避免很多麻烦。除了在网络硬件设备和防火墙设备... 详细信息

oracle数据库在部署和使用之前决定是否部署安全措施很重要,用户在实施与维护的过程中都需要提前考虑好是否采取安全措施和实施安全策略。基于安全部署的数据库,可以为后期使用和等保测评避免很多麻烦。除了在网络硬件设备和防火墙设备上采用安全措施以外,还可以在系统的防火墙上实施数据库的访问IP及端口的限制策略。其次在数据库安装完成后也需要考虑数据库的补丁升级和是否对数据库的用户和资源做限制策略。

关键词： oracle 防火墙策略数据库安全

业务型主站数据库从oracle到MySQL数据架构迁移的设计

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电工技术 2024年第6期 114-116页

作者：陈成岗中科南京信息高铁研究院江苏南京211100

探讨了业务型主站数据库选型从oracle到MySQL迁移的原因、数据架构设计思路、注意事项及具体实现方式。通过对oracle和MySQL的对比分析,明确了MySQL作为业务型主站数据库的可行性。介绍了数据架构的设计思路、注意事项和具体实现方式,... 详细信息

探讨了业务型主站数据库选型从oracle到MySQL迁移的原因、数据架构设计思路、注意事项及具体实现方式。通过对oracle和MySQL的对比分析,明确了MySQL作为业务型主站数据库的可行性。介绍了数据架构的设计思路、注意事项和具体实现方式,并通过实例分析验证了迁移的实践效果。

关键词：数据架构 oracle MySQL 数据迁移

大胆假设,合理求证——oracle建言亚洲银行业的CRM建设

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中国金融电脑 2006年第2期 88-90页

作者： oracle公司 oracle公司

一般银行的新客户,有32%会在开户第一年内流失,不但影响收益,也浪费了高昂的顾客获取成本.想保持长期的客户关系,加速营收成长,银行必须从开始就牢牢抓住顾客.

关键词：银行业 oracle CRM 建设亚洲客户关系顾客

松下电工:以oracle HRMS打造国际级的人力资源宝库

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日用电器 2007年第2期 41-43页

作者： oracle公司 oracle公司

oracle HRMS协助我们达到了人事管理高度化、工作效率化的目标,让我们能将人才(Human Resource)升级为人财(Human Capital)。而且,快速的投资回收期与量化的投资运营收益,更用数字证明了oracle HRMS为松下电工带来的应用成果与竞争优势。

关键词： oracle HRMS 松下电工人力资源投资回收期国际人事管理工作效率

oracles of the Ancients

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China Weekly 2024年第3期 52-55页

作者： Chen Mengtong 不详

The first major exhibition in the US dedicated to China's ancient capital 3,000 years ago carries key codes to the origin of the Chinese civilization and modern archaeological works,as well as the China-US cultural re... 详细信息

关键词： oracle Ancient exhibition