• Journal of the Institute of Electronics Engineers of Korea SC
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• v.43 no.2 s.308
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• pp.20-27
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• 2006

This paper proposes to use the UPnP as a middleware for robots. It describes the advantages of the UPnP by comparing it with the TAO CORBA that was used in a few robot development projects. We select a sample robot architecture, and examine the possible use of the UPnP as a robot middleware. This paper shows how the UPnP architecture can be applied to building a robot in the view of software architecture, message mapping, realtime, priority, network selection, performance, memory footprint, and deployment issues.

• Journal of KIISE:Databases
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• v.31 no.3
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• pp.232-242
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• 2004

Metadata is a general notion of data about data to improve data sharing and exchanging by definitely describing meaning and representation of data. However, metadata has been created in various ways and It caused another kind of heterogeneity problem named metadata heterogeneity problem. Recently, the research on metadata gateway approach that allows metadata heterogeneity is being more actively progressed. However, the existing commercialized systems that have been implemented with the metadata gateway approach are dependent on a metadata schema. In this paper, we propose a message conversion system which separates the mapping information from the mapping rules between heterogeneous metadata schemas. The proposed system dynamically manages standardized data elements by applying ISO/IEC l1179. Therefore, the proposed system provides the set of standard data elements to create consistently metadata of new databases and provides a fundamental resolution to the metadata heterogeneity problem.

• Proceedings of the KIEE Conference
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• 2005.07a
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• pp.381-383
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• 2005

변전소 자동화 시스템에 관한 IEC 61850 표준은 급속한 통신 기술의 변화를 수용하기 위해 실제적인 통신 서비스와 응용 영역을 분리하여 정의하였다. 이는 미래 지향적인 표준을 지향하는 것으로, 표준은 정보 모델과 추상적인 서비스 모델을 정의하고 이를 실제 통신 프로토콜에 사상(mapping)하는 방법을 제시하였다. 이러한 사상의 방법을 SCSM(Specific Communication Service Mapping)이라 명시하고 있다. 본 논문은 표준에서 제시하는 SCSM 과 사상되는 통신 프로토콜인 MMS(Manufacturing Message Specification), TCP/IP, Ethernet을 설명한다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.26 no.10A
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• pp.1717-1726
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• 2001

본 논문에서는 CORBA(Common Object Request Architecture)기반의 TINA(Telecommunications Information Networking Architecture) 분산체계에서 통신망 하부 장비들이 SNMP(Simple Network Management Protocol) 혹은 TMN(Telecommunications Management Network) 체계로 혼재되어 관리되는 네트워크의 NE(Network Element)들을 효율적으로 통합 관리할 수 있는 Generic Interface Adaptor(GIA)를 제안하고 이를 설계 및 구현하였다. GIA는 message mapping, protocol conversion 및 DBMS를 이용한 Object Abstract Translation(OAT)을 통해서 각 관리체계에 맞도록 관리정보를 변환시키며, 이를 통해 TINA EML(Element Management Layer) component와 SNMP NE agent 간의 상호연동을 가능하게 한다.

• Journal of the Korean Institute of Intelligent Systems
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• v.10 no.5
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• pp.506-512
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• 2000

In this paper, we propose a Fuzzy Classifier System(FCS) makes the classifier system be able to carry out the mapping from continuous inputs to outputs. The FCS is based on the fuzzy controller system combined with machine learning. Therefore the antecedent and consequent of a classifier in FCS are the same as those of a fuzzy rule. In this paper, the FCS modifies input message to fuzzified message and stores those in the message list. The FCS constructs rule-base through matching between messages of message list and classifiers of fuzzy classifier list. The FCS verifies the effectiveness of classifiers using Bucket Brigade algorithm. Also the FCS employs the Genetic Algorithms to generate new rules and modifY rules when performance of the system needs to be improved. Then the FCS finds the set of the effective rules. We will verifY the effectiveness of the poposed FCS by applying it to Autonomous Mobile Robot avoiding the obstacle and reaching the goal.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.37 no.5
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• pp.1-10
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• 2000

In this paper, we propose a Fuzzy Classifier System(FCS) makes the classifier system be able to carry out the mapping from continuous inputs to outputs. The FCS is based on the fuzzy controller system combined with machine learning. Therefore the antecedent and consequent of a classifier in FCS are the same as those of a fuzzy rule. In this paper, the FCS modifies input message to fuzzified message and stores those in the message list. The FCS constructs rule-base through matching between messages of message list and classifiers of fuzzy classifier list. The FCS verifies the effectiveness of classifiers using Bucket Brigade algorithm. Also the FCS employs the Genetic Algorithms to generate new rules and modify rules when performance of the system needs to be improved. Then the FCS finds the set of the effective rules. We will verify the effectiveness of the poposed FCS by applying it to Autonomous Mobile Robot avoiding the obstacle and reaching the goal.

• Educational Technology International
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• v.15 no.2
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• pp.117-141
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• 2014

This qualitative study investigated different interaction patterns in an online discussion. The data was collected from asynchronous discussion occurred in a graduate course. The data analysis methods include inductive analysis and mapping strategy. The results of the study suggest three layers of interaction: response sequences, interaction amongst participants, and concept map of messages. The visualization of response sequences enabled the researcher to discover complex and dynamic interaction patterns amongst participants. The many-to-many communication feature of online discussion does not always enable direct one-on-one interaction between two participants. Rather, one message contributed to multiple threads in the stream of conversation. In terms of interaction amongst participants, the interaction amongst participants, as indicated in the data, the messages also bind each participant and consequently a group(s) of participants together. It appears that the contribution of one message may not only enable a response to one participant, but also connect many participants to each other. The concept map of messages proposes that response sequences and interaction amongst participants can also be viewed between concepts within messages in the discussion. On the surface, the messages posted by individuals are linked by the system in a linear fashion as they are posted. However, the interaction extends to collaborative conversation amongst participants. Ultimately, a conceptual network of interrelated ideas including multiple perspectives is built in asynchronous discussion.

• The Transactions of the Korea Information Processing Society
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• v.2 no.3
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• pp.397-405
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• 1995

In order to operate the automatic devices of manufacturing process more efficiently and to solve the needs of the resource sharing,network technology is applied to the unit control devices located in common manufacturing zone and operated by connecting them.In this paper,functional standard of the network operation layer is set as MAP standard application layer of MMS(manufacturing message standard)for the cell or group,which is suggested by CIM (computer integrated manufacturing) standardization as common manufacturing zone.MMS is composed of abstract message which is not consider specific devices.Then,specific message standard must be defined to operate MMS.It is designed as VMD (virtual manufacturing device)objects which are abstract objects to perform group management based on the companion standard.Also they are operated in the group management model system.Group management operation takes multicast communication method which is the communication from single source to the multiple sinks, and the group management system and unit control devices are performed as VMD and real device mapping.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.11
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• pp.2047-2058
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• 2007

The business environment of enterprises could be difficult to obviate redundancy to filtrate data source occurred on data integrated to standard rules and meta-data and to produce integration of data and single viewer in geographical and spatial distributed environment. Specially, To can interchange various data from a heterogeneous system or various applications without types and forms and synchronize continually exactly integrated information#s is of paramount concern. Therefore data hub system based on SQL/XMDR message to overcome a problem of meaning interoperability occurred on exchanging or jointing between each legacy systems are proposed in this paper. This system use message mapping technique of query transform system to maintain data modified in real-time on cooperating data. It can consistently maintain data modified in realtime on exchanging or jointing data for cooperating legacy systems, it improve clarity and availability of data by providing a single interface on data retrieval.

• Proceedings of the KIEE Conference
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• 2006.07a
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• pp.25-26
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• 2006

IEC 61850은 변전소자동화시스템에 대한 국제 표준이다. IEC 61850 파트 7에서는 상호운용성을 위하여 IED (Intelligent Electronic Device)에 구현해야 할 정보모델과 서비스 모델을 추상적로 정의하였다. IEC 61850 파트 8에서 정의된 SCSM (Specific communication service mapping)은 추상적인 객체와 서비스를 MMS (Manufacturing Message Specification, ISO 9506) 와 ISO/IEC 8802-3으로 매핑하는 것을 정의한다. 이 논문은 SCSM을 이용하여 어떻게 IEC 61850 기반의 IED를 구현해야 하는지 설명한다.