• Title/Summary/Keyword: data retrieve

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Retrieval of Assembly Model Data Using Parallel Web Services (병렬 웹 서비스를 이용한 조립체 모델 데이터의 획득)

  • Kim, Byung-Chul;Han, Soon-Hung
    • Korean Journal of Computational Design and Engineering
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    • v.13 no.3
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    • pp.217-226
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    • 2008
  • Web Services for CAD (WSC) aims at interoperation with CAD systems based on Web Services. This paper introduces one part of WSC which enables remote users to retrieve assembly model data using Web Services. However, retrieving assembly model data takes long time. To resolve this problem, this paper proposes using parallel Web Services. As assembly models comprise a set of part models, it is easy to separate the problem domain into smaller problems. In addition, Web Services inherently supports distributed computing. This characteristic makes the parallel processing of Web Services easy. Firstly, the implementation of WSC which retrieves assembly model data based parallel Web Services is shown. And then, for the comparison, the experiments on the retrieval of assembly model data based on single Web Services and parallel Web Services are shown.

A Proposal of Multimedia Retrieval System and XML Meta-data Modeling Techniques (XML 메타데이터 모델링기법과 멀티미디어 검색시스템의 제안)

  • 윤미희;조동욱
    • Proceedings of the Korea Contents Association Conference
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    • 2003.05a
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    • pp.393-398
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    • 2003
  • Video which contains the multiple data such as text, images, audio and motion of objects is typical multimedia data. Multimedia retrieval system using XML is essential for efficient rep. of multimedia data. Therefore, multimedia retrieval system for retrieval and structural understanding is needed to retrieve the multimedia data. This Paper Proposes the multimedia retrieval system based on XML Meta-data modeling techniques.

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A Study on Data Availability Improvement using Mobility Prediction Technique with Location Information (위치 정보와 이동 예측 기법을 이용한 데이터 가용성 향상에 관한 연구)

  • Yang, Hwan Seok
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.8 no.4
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    • pp.143-149
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    • 2012
  • MANET is a network that is a very useful application to build network environment in difficult situation to build network infrastructure. But, nodes that configures MANET have difficulties in data retrieval owing to resources which aren't enough and mobility. Therefore, caching scheme is required to improve accessibility and availability for frequently accessed data. In this paper, we proposed a technique that utilize mobility prediction of nodes to retrieve quickly desired information and improve data availability. Mobility prediction of modes is performed through distance calculation using location information. We used technique which global cluster table and local member table is managed by cluster head to reduce data consistency and query latency time. We compared COCA and CacheData and experimented to confirm performance of proposed scheme in this paper and efficiency of the proposed technique through experience was confirmed.

USING REMOTELY SENSED DATA TO ESTIMATE THE SURFACE HEAT FLUXES OVER TAIWAN'S CHAIYI PLAIN

  • Chang, Tzu-Yin;Liou, Yuei-An
    • Proceedings of the KSRS Conference
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    • 2007.10a
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    • pp.422-425
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    • 2007
  • Traditionally, surface energy fluxes are obtained by model simulations or empirical equations with auxiliary meteorological data. These methods may not effectively represent the surface heat fluxes in a regional scale due to scene variability. On the other hand, remote sensing has the advantage to acquire data of a large area in an instantaneous view. The remotely sensed data can be further used to retrieve surface radiation and heat fluxes over a large area. In this study, the airborne and satellite images in conjunction with meteorological data and ground observations were used to estimate the surface heat fluxes over Taiwan's Chaiyi Plain. The results indicate that surface heat fluxes can be properly determined from both airborne and satellite images. The correlation coefficient of surface heat fluxes with in situ corresponding observations is over 0.60. We also observe that the remotely sensed data can efficiently provide a long term monitoring of surface heat fluxes over Taiwan's Chaiyi Plain.

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Development of Very Large Image Data Service System with Web Image Processing Technology

  • Lee, Sang-Ik;Shin, Sang-Hee
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.1200-1202
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    • 2003
  • Satellite and aerial images are very useful means to monitor ecological and environmental situation. Nowadays more and more officials at Ministry of Environment in Korea need to access and use these image data through networks like internet or intranet. However it is very hard to manage and service these image data through internet or intranet, because of its size problem. In this paper very large image data service system for Ministry of Environment is constructed on web environment using image compression and web based image processing technology. Through this system, not only can officials in Ministry of Environment access and use all the image data but also can achieve several image processing effects on web environment. Moreover officials can retrieve attribute information from vector GIS data that are also integrated with the system.

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Selective Data Reduction in Gas Chromatography/Infrared Spectrometry

  • Pyo, Dong Jin;Sin, Hyeon Du
    • Bulletin of the Korean Chemical Society
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    • v.22 no.5
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    • pp.488-492
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    • 2001
  • As gas chromatography/infrared spectrometry (GC/IR) becomes routinely avaliable, methods must be developed to deal with the large amount of data produced. We demonstrate computer methods that quickly search through a large data file, locating thos e spectra that display a spectral feature of interest. Based on a modified library search routine, these selective data reduction methods retrieve all or nearly all of the compounds of interest, while rejecting the vast majority of unrelated compounds. To overcome the shifting problem of IR spectra, a search method of moving the average pattern was designed. In this moving pattern search, the average pattern of a particular functional group was not held stationary, but was allowed to be moved a little bit right and left.

Efficient Multimedia Data File Management and Retrieval Strategy on Big Data Processing System

  • Lee, Jae-Kyung;Shin, Su-Mi;Kim, Kyung-Chang
    • Journal of the Korea Society of Computer and Information
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    • v.20 no.8
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    • pp.77-83
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    • 2015
  • The storage and retrieval of multimedia data is becoming increasingly important in many application areas including record management, video(CCTV) management and Internet of Things (IoT). In these applications, the files containing multimedia that need to be stored and managed is tremendous and constantly scaling. In this paper, we propose a technique to retrieve a very large number of files, in multimedia format, using the Hadoop Framework. Our strategy is based on the management of metadata that describes the characteristic of files that are stored in Hadoop Distributed File System (HDFS). The metadata schema is represented in Hbase and looked up using SQL On Hadoop (Hive, Tajo). Both the Hbase, Hive and Tajo are part of the Hadoop Ecosystem. Preliminary experiment on multimedia data files stored in HDFS shows the viability of the proposed strategy.

Development of Knapsack Problem Solver Using Relational DBMS (관계형 데이터베이스를 이용한 배낭문제 해법기의 구현)

  • 서창교;송구선
    • Journal of the Korean Operations Research and Management Science Society
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    • v.13 no.2
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    • pp.73-73
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    • 1988
  • Knapsack problems represent many business application such as cargo loading, project selection, and capital budgeting. In this research we developed a knapsack problem solver based on Martello-Toth algorithm using a relational database management system on the PC platform. The solver used the menu-driven user interface. The solver can be easily integrated with the database of decision support system because the solver can access the database to retrieve the data for the model and to store the result directly.

Development of knapsack problem solver using relational DBMS (관계형 데이터베이스를 이용한 배낭문제 해법기의 구현)

  • 서창교;송구선
    • Korean Management Science Review
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    • v.13 no.2
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    • pp.73-94
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    • 1996
  • Knapsack problems represent many business application such as cargo loading, project selection, and capital budgeting. In this research we developed a knapsack problem solver based on Martello-Toth algorithm using a relational database management system on the PC platform. The solver used the menu-driven user interface. The solver can be easily integrated with the database of decision support system because the solver can access the database to retrieve the data for the model and to store the result directly.

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A Study on Hypertext-based Bibliographic Information Retrieval System Using Internet (인터넷을 이용한 하이퍼텍스트 기반 서지정보검색 시스템에 관한 연구)

  • 박지연
    • Journal of the Korean Society for information Management
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    • v.12 no.2
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    • pp.171-192
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    • 1995
  • In this study, we constructed a hypertext-based bibliographic information retrieval system, which is very usell tool to browse and retrieve structured data. We minimized the problem of the use; s disorientation with the keyword retrieval technique. We also presented the potential advantages of this system which could be obtained by implementing it on WWW.

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