• The Journal of Information Technology
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• v.6 no.4
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• pp.163-175
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• 2003

SURF is a compliance engine, checking document content against detail in an established agreement. It provides a single vehicle for handling documentary trade settlement, regardless of the risk profile and financing requirements of the parties involved. That is, SURF, a Value Added Service connected to the Core Messaging Platform, is a documentary trade settlement service. It offers users of the system automated document compliance checking and a tool to manage the workflow in connection with documentary trade settlement. The Service supports varying degrees of risk transfer between buyer, sellers and banks and supports transactions from open account to more complex Letters of Credit.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2001.11a
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• pp.375-378
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• 2001

엔터프라이즈 환경에서 데이터의 교환을 위해 메시지중계시스템을 사용하고 있다. 그러나, 현재 사용하고 있는 메시지중계시스템 자체에는 정보보호서비스가 적용된 예가 많지 않으며 일부 적용된 경우에도 접근제어 서비스를 제공하고 있지 못하다. 본 논문에서 제안하는 PMI(Privilege Management Infrastructure)기반의 메시지중계시스템은 기존의 구축되어 있는 PKI(Public Key Infrastructure)를 이용하여 정보보호서비스의 인증, 무결성, 기밀성, 부인방지 서비스를 제공하며 PMI을 적용하여 접근제어 서비스를 제공한다. PMI의 속성인증서를 사용하여 실시간적으로 변하는 접근제어 정보의 변화를 수용하며 SOA(Sorce of Authority)를 통해 중앙에서 접근제어정보를 관리한다. 교환되는 데이터는 S/MIME을 기본으로 하여 국제표준을 따르며 S/MIME의 보안 레이블을 이용 데이터의 변경없이 접근제어 정보를 전송할 수 있도록 하였다.

• Journal of The Institute of Information and Telecommunication Facilities Engineering
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• v.8 no.4
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• pp.216-222
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• 2009

This paper proposes an integrated mobile sink networks management system which can monitor and control various kinds of wireless lan access points, located in many different areas divided by their managing groups, from multi-vendors, and their operations in networks. The proposed system has the center-local interoperability structure cooperating with local-center servers which can perform the same operations as the central servers for wireless lan access points from multi-vendors and wireless lan centric management features. For this purpose, we propose a new way of data design, messaging policy, and hierarchical system structure such that we can achieve stable and consistent management methods for various wireless access points on distributed networks.

• Journal of the Korean Home Economics Association
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• v.42 no.5
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• pp.107-126
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• 2004

As the information society matures, an analysis on possible outputs of internet usage is needed. Thus, this study was peformed in order to understand the utility cognition and negative outputs of internet users. The method used in this study was a web-based questionnaire that was administered to the internet users. Five hundred married men and women were analyzed with a factor and a multiple regression analysis. Results were as follows: First, many kinds of internet usages - information searching, internet shopping, electronic mail, instant messaging, and decision-making dependent on internet information - were differentiated with age. Second, the altitude about the internet was an important explanatory variable in the types of internet usage. Third, negative outputs of internet usage were great in terms of information resource management and unbalanced scheduling in daily time spent. Fourth, utility cognition was affected by qualitative elements on internet usage more than the quantitative ones.

• The Journal of Society for e-Business Studies
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• v.10 no.3
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• pp.37-48
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• 2005

Though many corporations are operating their logistics information systems, standard document forms for the connection of logistics information systems between transaction companies are not provided. Therefore, the standardized logistics information connection is needed for the efficient management. In this study, we Provide a prototype for logistics information systems connection by using e-mail which contains RFID and product information. This study could be a basis for logistics information system connection with the advance of RFID.

• Journal of Korea Multimedia Society
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• v.21 no.9
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• pp.1090-1098
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• 2018

MQTT is a lightweight messaging protocol that can be used for low power IoT devices. The MQTT basically uses single MQTT broker to indirectly share message information between publishers and subscribers. This approach has a weakness in regard to traffic overflow, connection fault, security, etc. In this paper, we propose a distributed MQTT broker architecture that solves the problems in single MQTT broker structure. The distributed MQTT broker architecture is expected to support new application services that cannot be supported by a conventional MQTT architecture. We have designed and implemented a distributed MQTT broker architecture based on the RPL protocol that has been widely used for IoT network. The experiment results show that the proposed MQTT broker architecture represents better publishing/subscribing latency and network stability than the conventional MQTT broker architecture.

• Journal of the Korean Society for Precision Engineering
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• v.23 no.5 s.182
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• pp.111-118
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• 2006

Better understanding and sharing information are getting important to manage interdisciplinary product development team in a globally-distributed company. This study proposes a solution to implement RPD(Rapid Product Development) system for the distributed development teams using SOAP(Simple Object Access Protocol). And a new approach is introduced for the better understanding of product geometry among the development members in different place and the easy sharing of product information. An application example shows that SOAP operates in distributed environment more efficiently than other RPC(Remote Procedure Call) techniques and it does not respond sensitively to firewall. And SOAP is an excellent RPC and messaging technique to exchange structured data. Procedures developed with use of SOAP are worked together with web, and users can use remote services as an application program in their local computer.

• International Journal of Precision Engineering and Manufacturing
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• v.4 no.6
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• pp.61-70
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• 2003

A multibody system dynamics analysis program is presented using one of the most useful programming methodologies, the object-oriented modeling, The object-oriented modeling defines a problem from the physical world as an abstract object. The object becomes encapsulated with the data and method, Analysis is performed using the object's interface, It is then possible for the user and the developer to modify and upgrade the program without having particular knowledge of the analysis program, The method presented in this paper has several advantages, Since the mechanical components of the multi-body system are converted into the class, the modification, exchange, distribution and reuse of classes are increased. It becomes easier to employ a new analysis method and interface with other S/W and H/W systems, Information can be communicated to each object through messaging. This makes the modeling of new classes easier using the inheritance, When developing a S/W for the computer simulation of a physical system, it is reasonable to use object-oriented modeling.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10d
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• pp.773-777
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• 2006

센서 네트워크 상의 센서 노드들은 싱크 노드의 ADV 메시지를 통한 질의에 해당하는 정보를 싱크 노드에게로 전송하며 싱크 노드는 수신한 정보를 사용자에게 제공한다. 그러나, 센서 네트워크을 위한 각종 라우팅 알고리즘들은 싱크 노드가 요청하는 해당 질의에 맞는 정보를 가지고 있는 센서 노드의 위치를 알기 위하여 매번 전체 네트워크로 ADV 메시지를 퍼뜨리는 방법을 사용하기 때문에 전체 네트워크의 수명과 직접적인 관련성이 있는 센서 노드들의 에너지 소비량을 극심하게 증가시킨다. 본 논문에서는 싱크 노드의 질의에 해당하는 목적지 노드를 찾기 위한 초기 경로 설정 시, 방향성 정보를 가진 ADV 메시지를 제한된 방향으로만 전파함으로써 관련없는 노드들의 메시지 송수신으로 인한 불필요한 에너지 소비를 줄이도록 하는 새로운 메시징 기법을 제안하고 이의 효율성을 모의실험을 통하여 나타내 보인다.

• Journal of Internet Computing and Services
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• v.9 no.1
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• pp.137-143
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• 2008

In ubiquitous environment the multi-agent system is effective for providing intelligent services. In this paper we introduce a new scheduling service model for improving the communication performance in the multi-agent system. It is achieved by assigning a priority to the message according to the weight of formalized ACL message and the number of messages exchanged between the agents. An experiment reveals that the proposed approach allows smaller processing time per message and turnaround time than the scheduling with the existing JADE platform. Moreover, the proposed scheme allows a scalable messaging system.