• The KIPS Transactions:PartD
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• v.10D no.1
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• pp.45-56
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• 2003

In the wireless environment, according to the development of technology, which is able to obtain location information of spatiotemporal moving object, the various application systems are developed such as vehicle tracking system, forest fire management system and digital battle field system. These application systems need the data model, which is able to represent and process the continuous change of moving object. However, if moving objects are expressed by a relational model, there is a problem which is not able to store all location information that changed per every time. Also, existing data models of moving object have a week point, which constrain the query time to the time that is managed in the database such as past or current and near future. Therefore, in this paper, we propose a data model, which is able to not only express the continuous movement of moving point and moving region but also process the operation at all query time by using shape-change process and location determination functions for past and future. In addition, we apply the proposed model to forest fire management system and evaluate the validity through the implementation result.

• Journal of Advanced Navigation Technology
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• v.27 no.5
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• pp.495-501
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• 2023

P-3C/K aircraft for maritime patrols that Republic of Korea Navy is using, is equipped with a variety of sensors and communication devices. Collected data from the aircraft is managed as tactical information by flight operators and stored. When the flight mission is completed, this information is transferred to tactical support center on the ground and played back or used for follow-up work through a analysis tool. During a flight mission, there are tens of thousands of detection objects within an hour in KADIZ (Korea air defense identification zone). In contrast, in TSD (tactical situation display), which displays a map when using the analysis tool, all detected objects are expressed as symbols. The increase in display symbols has a significant impact on the TSD image updating and consequently interferes with the smooth operation of operators. In this paper, we propose applying multiple threads and multiple layers to improve the performance of existing TSD. And the performance improvement is proven through the execution results.

• The Transactions of the Korea Information Processing Society
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• v.2 no.4
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• pp.581-591
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• 1995

An MIB is the heart of a network management system and it stores all information that is necessary for network management. To operate networks safely, it is essential to control accesses to managed objects. This paper provides three-level architecture of managers so as to perform network management more efficiently in large networks. Moreover, mandatory access control(MAC) policy and role-based access control policy are adopted to ensure the secure access to the MIB. These policies are modeled by using the active object-oriented data model, which makes easy to map these access control models into the active object-oriented database.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.20 no.3
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• pp.204-209
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• 2017

Ingestion of foreign body in children is a relatively common problem among paediatric population. The foreign bodies mostly pass spontaneously through the gastrointestinal tract. However, complications can occur according to its anatomical location, the characteristics of the foreign body, and delays in management. Although the cases of ingested button batteries or sharp objects impacted at the gastrointestinal tract can be very serious, there have been very only a few cases have reported colonoscopic removal of these dangerous foreign bodies in adults, and there have been no case reports in children. We report one case of a button battery and one case of an open safety pin, both impacted in the terminal ileum that had moved from the stomach within a few hours of ingestion and were eventually managed by colonoscopy without any complications.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.3 no.2
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• pp.355-362
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• 1999

Traffic monitoring, a part of the system management, is a vital function lot the proper operation of a system in use. Currently OMG has been trying to standardize CORBA system management. Besides, many companies and research laboratories have been developing and studying CORBA system management. In this paper, we have designed the proxy to monitor the CORBA traffic using the OSI management technology. To manage CORBA traffic resources, 6 parameters have been made into managed objects. The monitoring system consists of a CORBA server, a proxy object and an MIB. The CORBA server is made up of a service provider, a proxy server, and a event sewer. The proxy object acts as a process of a CORBA object, and is made up of a proxy client, a event client, and an IPC server.

• Journal of the Korean Society of Industry Convergence
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• v.23 no.2_2
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• pp.173-180
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• 2020

In Korea, due to the rapid increase in population due to industrialization, rivers were developed and managed with a focus on the completion and dimension of rivers. Due to the rapid increase in river use, there are so many river facilities indiscriminately that the administrative and management tasks are complicated and diversified in computerizing facilities and hydrologic data. Many methods have been proposed to solve this problem, but many problems exist. Among them, water has the same spectral characteristics, so it is difficult to subdivide into rivers, reservoirs, and dams. Therefore, this study subdivided the water system using supervised classification and GIS in order to efficiently manage the water resources by classifying the water system with the same spectral characteristics. In order to analyze the accuracy of the results, the accuracy of the objects classified using land cover map provided by environmental spatial information service was evaluated, and the result was an average of 91.75%, with 97.50% of rivers, 87.76% of reservoirs, and 90.00% of others.

• Journal of The Korean Association of Information Education
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• v.2 no.2
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• pp.226-238
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• 1998

I studied a group management model of virtual class for distance education system on the information superhighway. There are many objects and actions that need to be managed and controlled in virtual classes of a distance education model. Educators should be able to manage students' learning group and immediately be aware of who is attending and who is quitting the learning group in a virtual class. Also, students and educators in virtual classes can communicate and discuss various topics. I proposed a group management model for distance education on a network, and studied management algorithm and MIB (Management Information Base), which are required to manage virtual classes in distance education systems.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.427-428
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• 2013

The Lighthouses and light beacons are representative structures of Aids to Navigation(AtoN) facilities. Incheon had been the region where they were constructed actively in early moden era. This study is targeting the lighthouse and light beacon which are managed by Regional Maritime Affairs. They will be organized by the research from field investigation. And conservation and management method for long-term preservation on the objects that has cultural and historical values will be suggested through this study.

• Journal of Korea Society of Industrial Information Systems
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• v.17 no.2
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• pp.45-55
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• 2012

This paper suggests a way to construct an information management system for manufacturing process not by modifying existing solutions but by designing and developing its own solution, then examines its effects. To solve problems of existing systems, objects to be managed are organized and coded hierarchically so that a management system becomes more flexible and efficient in handling user's various needs and changes of equipments. We also provide user-customized reporting function where reporting forms are dynamically constructed depending on user's need. To validate our approach, we implement a real system and illustrate some useful examples.

• Journal of Internet Computing and Services
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• v.5 no.3
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• pp.87-98
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• 2004

There are several types of distributed subscribers network using Asymmetric Digital Subscriber Line (ADSL), Very high-bit rate Digital Subscriber Line (VDSL), and Data Over Cable Service Interface Specifications (DOCSIS), The efficient and concentrated network management of those several distributed subscribers networks and resources require the general information model of network, which has abstract and conceptional managed objects independent of type of network and its equipment to manage the integrated subscriber network, This paper presents the general Internet subscribers network modeling framework using RM-ODP (Reference Model Open Distributed Processing) to manage that network In the form of integrated hierarchy, This paper adopts the object-oriented development methodology with UML (Unified Modeling Language) and designs and implements the HFC network of DOCSIS as an example of the subscriber network.