573,767 Hits in 3.1 sec

Real-Time Databases and Data Services

Krithi Ramamritham, Sang H. Son, Lisa Cingiser DiPippo
2004 Real-time systems  
REAL-TIME DATABASES AND DATA SERVICES  ...  REAL-TIME DATABASES AND DATA SERVICES A QoS management framework for web-based real-time data services, based on feedback control theory is presented in Son and Kang (2002) .  ... 
doi:10.1023/b:time.0000045317.37980.a5 fatcat:zpzo5tconzd6zaw2zla7utkyb4

Dynamic QoS evaluation for Web Services Using Data Envelopment Analysis on Real-time Status

Luda Wang, Peng Zhang
2017 International Journal of Database Theory and Application  
Real-time status include the service IP address and port number, the invoker IP address and port number, Throughput, Latency and Connections, the Availability, System CPU utility and memory usage rate,  ...  Proposed methods could be used to analyze real-time status of Web services.  ...  On consider of requirements for service invocations, performance and real-time statues are considerable. Latency is the critical real-time status that is preferred by the service invokers.  ... 
doi:10.14257/ijdta.2017.10.5.06 fatcat:eiyn2a3s2nbdthzfeoxyuk7mxe

Beneficial effects of direct call to emergency medical services on time delays and management of patients with acute myocardial infarction: Real world data from RICO database

Jean-Claude Beer, Gilles Dentan, Luc Janin-Manificat, Marianne Zeller, Yves Laurent, Isabelle Lhuillier, Jacques Ravisy, Yves Cottin, Jean-Eric Wolff
2003 Journal of the American College of Cardiology  
Increased time to revascularlzation. larger infarction size. and worse ejection fraction on discharge were more predictive of stroke in men than in women (table).  ...  history of hypertension or heart failure, weigh less; were less likely to use tobacco, have a history of bypass surgery; and were less likely to undergo coronary revascularization. (P<O.OOOl all).  ...  : Real World Data From RICO Database ~~0.05) soon after arrival at ED.  ... 
doi:10.1016/s0735-1097(03)81065-3 fatcat:ufevobl2qzf3fdhzvw34utclmq

Design and applied research of the distributed real-time database in smart grid

Chunfeng Liu, Yan Jiang, Feng Zhao, Qiao Sun, Yang Zhang, Zhiqi Li, Chao Li
2014 16th International Conference on Advanced Communication Technology  
Real-time database systems combined with distributed architecture possess the capability to satisfy the timing constraints and preserve the data consistency while storing and processing the massive real-time  ...  Then according to the characteristics of the electricity data in the smart grid, we design and implement a distributed real-time database.  ...  to the database as the proxy service appoints and submitting the real-time data from the database to the proxy service.  ... 
doi:10.1109/icact.2014.6779057 fatcat:7smpc3ok5jcbhh5gqqhomiyw64

A Federated Approach for Increasing the Timely Throughput of Real-Time Data Services

Yan Zhou, Kyoung-Don Kang
2012 2012 IEEE 18th Real Time and Embedded Technology and Applications Symposium  
As the demand for real-time data services (e.g., ecommerce or online auctions) increases, it is desired for a real-time database to increase the timely throughput−the amount of data processed in a timely  ...  To address the problem, we design a new system architecture for federated real-time data services and develop efficient approaches for load sharing among a set of clustered databases.  ...  the desired data service delay in a cluster of databases, and an example real-time data service level agreement in terms of the average and transient delay are discussed.  ... 
doi:10.1109/rtas.2012.8 dblp:conf/rtas/ZhouK12 fatcat:xxrwcxvczbbx7hxk5hhfao5hry

Design Issues and Experimental Database Architecture for Telecommunications [chapter]

Juha Taina, Kimmo Raatikainen
1997 Intelligent Networks and Intelligence in Networks  
We examine the design issues of real-time transaction processing in database architectures that can be integrated into any teleoperator's service provision architecture.  ...  We also introduce an experimental database architecture which is a real-time distributed object-oriented database architecture.  ...  ACKNOWLEDGMENTS The authors are thankful to the rest of the Darfm-team, particularly to Mika Rautila, Tapani Karttunen, and Harri Tohonen from Telecom Finland.  ... 
doi:10.1007/978-0-387-35066-0_11 fatcat:6vho4y22bjf7nbp2m5bjnt2seu

A Distributed Real-Time Main-Memory Database for Telecommunication [chapter]

Jan Lindström, Tiina Niklander, Pasi Porkka, Kimmo Raatikainen
2000 Lecture Notes in Computer Science  
BeeHive 41 ] is a real-time database supporting transaction and data deadlines, parallel and real-time recovery, fault tolerance, real-time performance and security.  ...  The prototype implementation of RODAIN database architecture supports real-time scheduling of real-time and non-real-time transactions.  ... 
doi:10.1007/10721056_12 fatcat:bkdywaxru5harjum2lf5kpwscu

Deadline Assignment and Tardiness Control for Real-Time Data Services

Yan Zhou, Kyoung-Don Kang
2010 2010 22nd Euromicro Conference on Real-Time Systems  
Although deadline-aware real-time scheduling would significantly enhance the timeliness of data services, it is not clear how to assign explicit feasible deadlines to data service requests in an open environment  ...  Consequently, the deadline miss ratio is significantly reduced compared to a state-of-art database system with a real-time scheduling extension.  ...  tardiness of real-time data services.  ... 
doi:10.1109/ecrts.2010.20 dblp:conf/ecrts/ZhouK10 fatcat:j7x3ead2lzeb7ev3gmbgk7lryy

A Real-Time and Open Geographic Information System and Its Application for Smart Rivers: A Case Study of the Yangtze River

Zeqiang Chen, Nengcheng Chen
2019 ISPRS International Journal of Geo-Information  
One of the methods developed is the conceptual mapping of a real-time GIS data model to open GIS models and services and a real-time computation framework.  ...  GeoSensor integrates the real-time GIS model, real-time computation framework, and Open Geospatial Consortium services.  ...  The funders had no role in the design of the study, in the collection, analyses, or interpretation of data, in the writing of the manuscript, or in the decision to publish the results.  ... 
doi:10.3390/ijgi8030114 fatcat:lgrzmkbfa5foldyu6tdn4r4u4e

Integrating Proactive and Reactive Approaches for Robust Real-Time Data Services

Yan Zhou, Kyoung-Don Kang
2009 2009 30th IEEE Real-Time Systems Symposium  
Real-time data services are needed in data-intensive real-time applications such as e-commerce or traffic control.  ...  data service delay and accordingly adapt the workload in a proactive manner, if necessary, to support timely data services. • We integrate the feed-forward approach with a feedback  ...  We extend the Berkeley DB [8] (an open source database from Oracle) to support real-time data services via the feed-forward and feedback schemes.  ... 
doi:10.1109/rtss.2009.22 dblp:conf/rtss/ZhouK09 fatcat:gkkmvwevczevzoxgvb5r5f7o4e

Dynamic Environment and Snowflake Schema in Real Time Data Services

S. Aswini, D. Murali, R. Selvam
2013 International Journal of Computer Applications  
for a real changing process start .By Modeling database dynamic workload adoption in terms of the relation between data service delay and Conglomerate estimation.  ...  The demand for real-time data service is increasing in many applications such as e-commerce, agile manufacturing, telecommunications, network management and transportation management.  ...  ARCHITECTURE REAL TIME DATA SERVICES AND SNOWFLAKE SCHEME In this section, an overview of the architecture and timely data services is given.  ... 
doi:10.5120/14113-2162 fatcat:e2gtv7glxbcffjl57wxkdywst4

Application of 3D WebGIS and real-time technique in earthquake information publishing and visualization

Boren Li, Jianping Wu, Mao Pan, Jing Huang
2015 Earthquake Science  
In this paper, we propose a novel approach for real-time 3D visual earthquake information publishing model based on WebGIS and digital globe to improve the ability of processing real-time data in systems  ...  Although they can provide a visual analysis platform based on GIS technology, they lack a general description in the extensibility of WebGIS for processing dynamic data, especially real-time data.  ...  The database service layer is responsible for managing real-time data and spatial data together with nonspatial data.  ... 
doi:10.1007/s11589-015-0124-1 fatcat:3td77t3hzrcmndabrtmeevo6ua

Backlog Estimation and Management for Real-Time Data Services

Kyoung-Don Kang, Jisu Oh, Yan Zhou
2008 2008 Euromicro Conference on Real-Time Systems  
Real-time data services can benefit data-intensive real-time applications, e.g., e-commerce, via timely transaction processing using fresh data, e.g., the current stock prices.  ...  Our backlog estimation and feedback control aim to support the desired service delay bound without degrading the data freshness critical for real-time data services.  ...  For real-time data services, it is important for a database to be able to estimate the current data service workload and its impact on performance.  ... 
doi:10.1109/ecrts.2008.11 dblp:conf/ecrts/KangOZ08 fatcat:vdcpocdxf5ddpgz5ij2bs3rbta

Design and Realization of Production Monitoring System for Coal Chemical Industry Real - time Database

Xiuping Li
2017 Chemical Engineering Transactions  
Therefore, the production of real-time data collection, storage and monitoring functions of the production facilities of each factory is realized.  ...  Therefore, the coal chemical real-time database production monitoring system can not only provide important data communication support to the heterogeneous control system, but also can bring the management  ...  First, the real-time and historical data exchange of the real-time database system is ensured.  ... 
doi:10.3303/cet1762134 doaj:51406762edf046f9a59e2be23394d04c fatcat:fuxanm7jwrb63kzkxqsbpzglba

Beehive: Global Multimedia Database Support for Dependable, Real-Time Applications [chapter]

John Stankovic, Sang Son, Jörg Liebeherr
1997 Real-Time Database and Information Systems: Research Advances  
We are developing a global virtual database, called BeeHive, which is enterprise speci c and o ers features along real-time, fault tolerance, quality of service for audio and video, and security dimensions  ...  The con uence of computers, communications and databases is quickly creating a global virtual database where many applications require real-time access to both temporally accurate and multimedia data.  ...  Such databases will be enterprise speci c and o er features along real-time, fault tolerance, quality of service for audio and video, and security dimensions.  ... 
doi:10.1007/978-1-4615-6069-2_22 fatcat:5jtweeqvhzeplpq4mxjzuu5oai
« Previous Showing results 1 — 15 out of 573,767 results