• International Journal of Internet, Broadcasting and Communication
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• v.14 no.4
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• pp.96-103
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• 2022

In this paper, we define EMRA-based USN metadata to describe sensor device, sensor node, and sensor network information at the application level. And the proposed method for effectively storing and retrieving USN metadata based on EMRA uses agent technology. As the sensor metadata proposed in this paper is based on SensorML, interoperability can be maintained in the USN environment, and the metadata management system can be directly utilized for metadata management in USN middleware or applications.

• Journal of KIISE:Computing Practices and Letters
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• v.11 no.4
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• pp.334-348
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• 2005

The goal of next generation digital broadcasting is offering the interaction among consumers and providers as well as variety services. One of the important factors for this new broadcasting environment keeps the interoperability among providers and consumers since the environment is distributed. Therefore a standard metadata for digital broadcasting is required and TV-Anytime metadata is one of the metadata standards for digital broadcasting. The terminal nodes of TV-Anytime metadata are defined by using MPEG-7 metadata. MPEG-7 metadata is standard metadata for describing multimedia content. Therefore, if we use the MPEG-7 metadata for describing broadcasting content can offer multimedia search services like content-based search by the extension of metadata. The efficient management system for these metadata is important for offering the services with high Duality on real broadcasting environment TV-Anytime metadata and MPEG-7 metadata are technically defined using a single XML schema, so its instances are XML data. Currently, a lot of systemsfor managing XML data are proposed in many researchers and we can expect to adapt these systems for managing broadcasting metadata. But the methods used in these systems are not specific methods for managing broadcasting metadata because of methods for general-purpose. In this paper, we find the properties of broadcasting metadata and develop an efficient metadata management system that is based on the found properties. Since our systemis implemented on real broadcasting environment, we expect that the system is most efficient and suitable. Also our system is interoperable since we use XQuery as query language for querying broadcasting metadata.

• Proceedings of the KSRS Conference
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• 2008.10a
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• pp.398-401
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• 2008

With the advance of internet and computer processing technique, users can easily access and use the multimedia contents involving the various pictures, videos and audios information. And users request more convenient and accurate multimedia services. In these environments, it is difficulties to integrate and manage metadata standards because there are various standards in multimedia applications according to types of services and data formats individually. In this paper, we design and implement the multimedia metadata management system for integrating from heterogeneous sources. In our system, we managed heterogeneous metadata by integrating to unified schema using mapping table. Through proposed system, users can search multimedia data easily without considering variety of application services.

• Journal of Digital Contents Society
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• v.9 no.4
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• pp.725-733
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• 2008

CDN(Content Delivery Network) has been used as contents transmission network for transmitting high capacity contents fastly and stably. Main goals of CDN are efficient distribution and management high capacity contents. Current CDN distributes contents by managing contents based on basic metadata created by contents provider. However, existing CDN management system doesn't provide a method for applying additional metadata in content itself that is necessary for efficient contents management and distribution. Since the existing system can not annotate additional information in metadata about contents itself, and can not search contents that user wants. This paper proposes a method for applying additional metadata in existing CDN and implemented it as contents metadata management system(CMMS). A user can search needed contents effectively via CMMS. Also, the searched result can help selecting and managing contents to distribute in CDN.

• The Korean Journal of Archival Studies
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• no.5
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• pp.149-177
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• 2002

Metadata is a structured data that makes computer to understand web based data. Types of metadata are Dublin core, ONIX, and EBKS metadata in Korea. Dublin Core is well known among these metadata. Archive is a data, that is the result of ones or groups working process, which is reasonably maintained and stored. These archives are stored and maintained lawfully and suitably for efficient usages for the future. For efficiently managing these grant amount of archive, Finding Aids and Description are needed. Adoption Archives and Records Management system is inevitable in order to maintain organized and efficient data. Metadata helps governments data that is grant to organize in simple way. For maintaining and storing data efficiently, using metadata for Archives and Records Management is essential. Form this report, we will see the examples of using metadata of other country, such as GILS(Government Information Locator Service), AGLS(The Australian Government Locator Service), NZGLS(New Zealand Government Locator Service), Danish Dublin Core and e-GMS(e-Government Metadata Standard) and e-GMF(e-Government Metadata Framework).

• Journal of the Korea Society of Computer and Information
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• v.16 no.6
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• pp.143-153
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• 2011

The goal of Ubiquitous Sensor Network(USN) environments is to provide users high quality services based on a variety of sensors. In this environment, sensor devices, sensor nodes and sensor networks are heterogeneous and have various characteristics. Therefore it is important for interoperability to define a metadata for describing USN resources. The OGC(Open Geospatial Consortium) proposes SensorML(Sensor Model Language) as a standard language for modeling sensors. However, SensorML provides a framework for describing a processing model among sensors rather than describing information of sensors. Therefore, to describe a USN metadata is not main purposes of SensorML. This paper defines a USN metadata which describes information about sensor device, sensor node, and sensor network. Also the paper proposes a method for efficiently storing and searching the USN metadata and implements a USN metadata management system based on our method. We show that our metadata management system is reasonable for managing the USN metadata through performance evaluation. Our USN metadata keeps the interoperability in USN environments because the metadata is designed on SensorML. The USN metadata management system can be used directly for a USN middleware or USN application.

• Journal of Korea Society of Digital Industry and Information Management
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• v.5 no.4
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• pp.61-67
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• 2009

PACS and Medical Image System use only high level metadata in retrieving desired image nowadays. In order to retrieve Medical Image Data more efficiently, it would be needed to retrieve similarity by utilizing low level metadata as well as keyword retrieval by high level metadata. Thus, In this paper presents that it has realized similarity retrieval by low level metadata on the basis of MPEG-7, and keyword retrieval by high level metadata of DICOM base. It would be also available to look into medical image data in various methods and read accurate image promptly for diagnosis and treatment by retrieval with integrating two metadata.

• Journal of the Korea Society of Computer and Information
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• v.13 no.4
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• pp.71-78
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• 2008

Digital Broadcasting serves a variety of broadcasting services for satisfying the requirement of customers. One of main factors for new broadcasting environment is interoperability between providers and consumers. For this interoperability, metadata standards are proposed for the digital broadcasting and TV-Anytime metadata is one of these standards. On the one hand, there are some researches for efficiently managing the broadcasting metadata on Set-Top Box. This paper proposes the metadata management system for efficiently managing the broadcasting metadata based on the STB which is low-cost and low-setting. Our system consists of a storage engine to store the metadata and an XQuery engine to search the stored metadata and uses special index for storing and searching. We expect that our system will keep the interoperability amongst a variety of applications for broadcasting because we adopts the XQuery for searching the metadata and the XQuery is a standard language for searching XML data.

• Journal of KIISE:Computer Systems and Theory
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• v.36 no.4
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• pp.259-273
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• 2009

Most of large-scale distributed file systems decouple a metadata operation from read and write operations for a file. In the distributed file systems, a certain server named a metadata server (MDS) maintains metadata information in file system such as access information for a file, the position of a file in the repository, the namespace of the file system, and so on. But, the existing systems used restrictive metadata management schemes, because most of the distributed file systems designed to focus on the distributed management and the input/output performance of data rather than the metadata. Therefore, in the existing systems, the metadata throughput and expandability of the metadata server are limited. In this paper, we propose a new non-shared metadata management scheme in order to provide the high metadata throughput and scalability for a cluster of MDSs. First, we derive a dictionary partitioning scheme as a new metadata distribution technique. Then, we present a load balancing technique based on the distribution technique. It is shown through various experiments that our scheme outperforms existing metadata management schemes in terms of scalability and load balancing.

• Journal of Korean Society of Archives and Records Management
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• v.10 no.2
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• pp.215-243
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• 2010

The purpose of the study is to evaluate Korean Records Management Metadata Standard with special emphasis on the contextual elements in their implementation aspect, and to provide the direction of the Standard revision for improving the metadata quality of RMS developed by National Archives of Korea. The present paper begins with comparing RMS data and the Standard elements, and examines the problems of current accumulation practices of contextual metadata elements in the RMS. Finally it makes some suggestions concerning the Standard revision as well as RMS function upgrade.