检索结果-南通市图书馆

Design and Implementation of data synchronization for Distributed Industry and Commerce Administration Business database

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Design and Implementation of Data Synchronization for Distri...

2011 4th IEEE International Conference on Computer Science and Information Technology(ICCSIT 2011)

作者： Zhang Zhijun Zheng Ziguo Xu Gongwen Liu Zhendong Han Guoyong School of Computer Science and Technology Shandong Jianzhu University Computer Center Shandong Jianzhu University

ISBN: (纸本)9781612848334

To realize consistency and security of the system database, the method to ensure data synchronization of distributed database is discussed. Firstly the whole system requirement and network environment is introduced, and then describes the distributed structure model of database. Using the advanced replication feature in Oracle database, basing on the "Commerce and Industry business data center" of a special province industrial and commercial system, data synchronization for data center of commerce and industry management system is designed and implemented. The approach used in Commerce and Industry business data center is also suitable for business organizations, taxation, public security, and some industries.

关键词： consistency and security distributed database data synchronization data replication

Blockchain in energy systems:values,opportunities,and limitations

在线全文

cnki会议

学校读者我要写书评

暂无评论

Frontiers in Energy 2022年第1期16卷 9-18页

作者： Sijie CHEN Jian PING Zheng YAN Jinjin LI Zhen HUANG Key Laboratory of Control of Power Transmission and Conversion(Ministry of Education) Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory for Thin Film and Microfabrication(Ministry of Education) Department of Micro/Nano-electronicsShanghai Jiao Tong UniversityShanghai 200240China Key Laboratory for Power Machinery and Engineering(Ministry of Education) Shanghai Jiao Tong UniversityShanghai 200240China

The structure of a power energy system is becoming more distributed than before.It becomes challenging to manage such a system in a centralized way,because a central authority may not exist or may not be trusted by all parties.Blockchain is a promising tool to address this challenge,by enabling trusted collaboration in the absence of a trusted central authority.Its use in the energy sector has been pioneered by several pilot projects.However,to date the energy sector has not seen large-scale deployment of blockchain,partly because the founders of those pilot projects,the public,and utilities have not reached consensus on the values and limitations of blockchain in energy.This perspective aims to bridge this gap.First,the philosophy and unique values of blockchain are discussed.Second,some promising blockchain-based applications in energy systems are presented.Third,some common misunderstandings of blockchain in energy are discussed.Last,some frequently-asked questions from utilities are discussed.Hopefully this perspective can help advance large-scale deployment of blockchain in energy systems.

关键词： blockchain immutability energy trading energy management data synchronization

Proximity Based Automatic data Annotation for Autonomous Driving

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2020年第2期7卷 395-404页

作者： Chen Sun Jean M.Uwabeza Vianney Ying Li Long Chen Li Li Fei-Yue Wang Amir Khajepour Dongpu Cao Department of Mechanical and Mechatronics Engineering University of WaterlooWaterloo ON N2L3G1Canada Department of Geography and Environmental Management University of WaterlooWaterloo ON N2L3G1Canada School of data and Computer Science Sun Yat-sen UniversityZhuhai 519082Chinaand also with Waytous Inc.Qingdao 266109China

The recent development in autonomous driving involves high-level computer vision and detailed road scene understanding.Today,most autonomous vehicles employ expensive high quality sensor-set such as light detection and ranging(LIDAR)and HD maps with high level annotations.In this paper,we propose a scalable and affordable data collection and annotation framework image-to-map annotation proximity(I2MAP),for affordance learning in autonomous driving applications.We provide a new driving dataset using our proposed framework for driving scene affordance learning by calibrating the data samples with available tags from online database such as open street map(OSM).Our benchmark consists of 40000 images with more than40 affordance labels under various day time and weather even with very challenging heavy snow.We implemented sample advanced driver-assistance systems(ADAS)functions by training our data with neural networks(NN)and cross-validate the results on benchmarks like KITTI and BDD100K,which indicate the effectiveness of our framework and training models.

关键词： Affordance learning autonomous vehicles data synchronization scene understanding

Coarse-Grained Cloud synchronization Mechanism Design May Lead to Severe Traffic Overuse

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2013年第3期18卷 286-297页

作者： Zhenhua Li Zhi-Li Zhang Yafei Dai the Department of Computer Science and Technology Peking University the Department of Computer Science and Engineering University of Minnesota-Twin Cities

In recent years, cloud sync（hronization） services such as GoogleDrive and Dropbox have provided Internet users with convenient and reliable data storing/sharing functionality. The cloud synchronization mechanism （in particular, how to deliver the user-side data updates to the cloud） plays a critical role in cloud sync services because it greatly affects the cloud operation cost （in terms of sync traffic） and user experience （in terms of sync delay）. By comprehensively measuring tens of popular cloud sync services, we find that their cloud sync mechanisms differ greatly in sync performance and design granularity. Quite surprisingly, some very popular services （like GoogleDrive and 115 SyncDisk） utilize a quite coarse-grained cloud sync mechanism that may lead to severe traffic overuse. For example, updating 1-MB data may sometimes result in 260-MB sync traffic. In this paper, we conduct a comparative study of various cloud sync mechanisms by analyzing their respective pros and cons under different situations, unravel the pathological processes for their traffic overuse problems, and finally provide insights/solutions for better choosing/designing a cloud sync service.

关键词： cloud storage data synchronization operation cost user experience design granularity

synchronization System among Remote Heterogeneous database Systems

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synchronization System among Remote Heterogeneous Database S...

2008 IEEE International Symposium on Knowledge Acquisition and Modeling Workshop(KAM 2008)

作者： Yushui Geng 1 1 Center of Modern Education Technology Shandong Institute of Light Industry Jinan ShanDong ChinaZhonghua Zhao 2 2 College of Computer and Information Management Shandong Institute of Light Industry Jinan ShanDong ChinaXiangcui Kong 3 3 College of Computer and Information Management Shandong Institute of Light Industry Jinan ShanDong China

By studying the current mainstream database system,with message queue method mechanism and JMS messaging services,we designed a data synchronization system model.We introduced the model’s major technology and work pr... 详细信息

关键词： data synchronization triggers message queue heterogeneous JMS Messages service XML Web service

分布异构多数据库中多副本一致性维护研究与实现

在线全文

cnki会议

学校读者我要写书评

暂无评论

分布异构多数据库中多副本一致性维护研究与实现

第二十三届中国数据库学术会议

作者：贾艳燕娄燕飞杨树强贾焰国防科技大学计算机学院

1前言基于分布式数据库系统的大型企业应用越来越广泛,为了提高系统可用性和安全性,系统中的关键数据会在不同地域存有多个副本。保持多个副本间的数据一致性是分布式数据库系统中的一个关键技术。

关键词： Distributed database data consistency data replication data synchronization Asynchronous replication

在线全文

cnki会议

学校读者我要写书评

暂无评论

移动数据库中基于物化视图的数据同步机制

移动数据库中基于物化视图的数据同步机制

第十九届全国数据库学术会议

作者：陈黎赵培翔陈立军杨冬青唐世渭北京大学信息科学中心

1.引言随着移动通信技术的迅速发展和广泛应用,许多计算节点都可以在自由移动的过程中保持网络连接。人们迫切需要能在任何时间、任何地点高效即席地访问任何数据,于是,一种更加灵活、复杂的移动数据库技术应运而生,并迅速成为新的研究... 详细信息

1.引言随着移动通信技术的迅速发展和广泛应用,许多计算节点都可以在自由移动的过程中保持网络连接。人们迫切需要能在任何时间、任何地点高效即席地访问任何数据,于是,一种更加灵活、复杂的移动数据库技术应运而生,并迅速成为新的研究热点。移动数据库位于移动单元(如移动计算机)中,它和固定节点(服务器端)构成移动计算环境。这种计算环

关键词： Mobile database Materialized view data synchronization

OpenBASE MINI与异构数据库之间的同步

在线全文

cnki会议

学校读者我要写书评

暂无评论

OpenBASE MINI与异构数据库之间的同步

第十七届全国数据库学术会议

作者：李和明彭成宝张霞刘积仁东北大学软件中心

1引言当前,嵌入式数据库技术正在迅猛地发展,有些著名数据库厂商已经推出了他们的嵌入式数据库产品,国外的如Oracle公司的OracleLite、Sybase公司的Sybase SQL Anywhere等,国内对嵌入式数据库的研究处于刚刚起步

关键词： Embedded DBMS Sync server data synchronization Heterogeneous DBMS