• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.24 no.2
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• pp.118-121
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• 2013

Primary lymphoma of the larynx is rare, accounting for less than 1% of all laryngeal neoplasm. Early symptoms are ambiguous and nonspecific, and confirmation of the diagnosis is often difficult. The aim of this study was to report the experience of our department in the management of these aggressive lesions, as they require special diagnostic and therapeutic attention. We enrolled 3 patients who diagnosis of lymphoma involving the larynx were retrospectively reviewed. The histopathological diagnosis revealed 1 case of diffuse large B cell lymphoma, and 2 case of NK-T cell lymphoma. Details of the presentation, diagnostic procedures, treatment, and outcome of these patients were presented. Primary laryngeal lymphoma is a rare entity. Early symptoms are subtle and nonspecific, and confirmation of the diagnosis is often difficult. Because of the rarity of this tumor type, the optimal management remains controversial and it seems that should be managed not as a distinct disease entity but as an unusual presentation of non-Hodgkin lymphoma, according to the recent treatment trends.

• Proceedings of the Korea Society for Simulation Conference
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• 2002.11a
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• pp.157-162
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• 2002

A distributed simulation with HLA/RTI provides stable and satisfactory results. In this study, a distributed simulation of Petri net models under the HLA/RTI framework is considered. Throughout our experiences, it is recognized that the proper use of interface specification and time management services are important in order to achieve successful implementation of RTI. The interfacing tokens that are delivered to other models are distinguished as information entity and physical entity. Both entities are modeled as Interaction Class in order to send and receive messages. In synchronizing local simulation clocks, a conservative method with NERA service is considered. A eel manufacturing system is modeled and implemented with RTI to illustrate the distributed simulation of Petri net models.

• Journal of the Semiconductor & Display Technology
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• v.13 no.2
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• pp.63-66
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• 2014

Managing electronic medical record is very difficult, because the currently electronic medical system is not designed standard that is uniform and proper. In this paper, in order to overcome this situation, we propose meta-data for the management of the electronic medical record as a single system. To this end, we first analyzed the research on electronic medical records and related standards. Second, we, on the basis of the analysis result, abstracted electronic medical record and entities related on electronic medical, and we designed an entity-relationship model. And finally, we have to complete the meta-data through the setting attributes in this entity-relationship model. Through this study, it was possible that we can complete metadata highly expressive medical records, and suggest an alternative for problem of current medical records systems.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2004.10a
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• pp.126-132
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• 2004

The database design for the management of bridge measurement information is presented in this paper. To express the associated data generated during the whole process of ambient measurement efficiently, requirements analysis for database construction is performed. And to define objects and organize schema conceptual and logical design are performed, which convert data model into logical schema. Finally, physical design is performed using DDL(data defined language). This database is based on the object-relational data modeling approach that has rich expressive power and good reusability in comparison with the traditional entity-relational modeling.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1989.10a
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• pp.25-29
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• 1989

본 고에서는 다차원 개체 clustering문제에 있어서 개체간 관계가 확률적이고 가중치가 부여된 경우를 위한 기대차이등급 clustering기법을 제시하였다. 기대차이등급 clustering기법은 해법의 필요성에 비해 상대적으로 해법개발이 미진한 분산정보시스팀을 대상으로 한 전산화 master plan의 수립이나 기계-부품 그룹형성, FMS에서의 주문선정(Part Type Selection)등에 기여할 수 있을 것으로 기대된다. 반면 해법의 타당성 검토를 위한 이론적 연구가 제시되지 않아 추후 이의 보완을 위한 연구가 요망된다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1989.10a
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• pp.30-39
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• 1989

일반적으로 cluster의 수가 미정인 상황하에서의 clustering문제는 semistructured문제로 알려져 있다. clustering문제를 구조화하는데 있어서 해의 품질평가(evaluation of solution quality)가 필수적이나 각 응용분야에 널리 적용될 수 있는 척도는 아직까지 개발되어있지 못한 상태이다. 그 주된 원인은 cluster해에 대한 개념적 차원에서의 평가기준은 제시되어있으나 척도의 구현에 있어서는 제시된 개념들이 명확하게 적용될 정도의 수준으로는 구체화되지 못한데에 기인한다고 할 수 있다. 본 연구의 목적은 개체차원이 다차원으로 확장된 clustering문제를 대상으로하는 clustering문제의 척도개발에 있다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2023.05a
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• pp.275-276
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• 2023

In order to prevent disaster risks caused by building aging in advance, the prevailing opinion is that it is urgent to actively improve systems such as mandatory safety inspections, and to calculate risks and develop safety management systems due to building aging. The need for systematic risk management continues to be emphasized in the process of safety inspection and repair of old buildings, but the risk management and safety management techniques of each construction entity have not been established in practice. Accordingly, this study aims to analyze the vulnerability factors of aging buildings and provide basic data on the development of a risk rating calculation model for old buildings and the efficiency of safety management systems in the future.

• Journal of Digital Convergence
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• v.13 no.9
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• pp.57-75
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• 2015

The study introduces the case of initial adoption and convergence of accounting system under the K-IFRS by the quasi-government entity, the National Research Foundation of Korea(NRF). Followings are the methodology used in the study. (1) The study provides several accounting issues, their impact on the financial information of the NRF and implications about NRF's financial information in the course of convergence of accounting system under the K-IFRS. (2) As examples of accounting issues, the NRF reflected several accounting difference such as revaluation of fixed assets, economic useful life, depreciation method, reclassification of investment, representation of transfer revenue from the government, the timing of revenue recognition, and employ benefits, etc. As results of adjustments under the K-IFRS, the NRF decreased 1,109 billion of total assets and 1,064 billion of total liabilities. Also, increase in operating expenses results a slight decrease in net income, which may have an impact on future management evaluation of the NRF. A successful case of K-IFRS adoption by the NRF which brings deep insight on adoption and convergence of new accounting system to other quasi-government entity.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.577-580
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• 2003

The purpose of this study was to make a database model for financial feasibility study of buildings offered for sale which is helpful for improvement of business ability in construction and confidence of a project from a related participant. At first, we studied several thesis and met some professionalist which work for construction and did a first survey for examining latest situation of a feasibility study in construction. As a result, even though feasibility study is important, factors for information management wasn't systemized. So we did a second survey for fixing Factors of the database model. The database model was composed of the factors that we got from the second survey. ER(Entity-Relationship) analysis was used to making it. We expect thar we can get more reasonable information to study financial feasibility study and can diminish risks of project through the database model. So the result of this study was to make a database model for more reasonable financial feasibility study of building offered for sale.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.23 no.5
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• pp.885-896
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• 2013

MTC(Machine Type Communications), providing a variety of services anytime and anywhere by connecting the cellular network to the machine and things without human intervention, is being considered as a major challenge of the next-generation communications. Currently, When a massive MTC devices simultaneously connect to the network, each MTC device needs an independent access authentication process. Because of this process, authentication signaling congestion and overload problems will cause in LTE-Advanced. In this paper, we propose a group-based authentication protocol and a key management protocol. For managing the MTC devices as group units, the proposed protocol elects a group leader and authentications only once with the core network. After the authentication is completed, a group leader manages the rest members and MME(Mobility Management Entity) by constructing a binary tree. Finally, the propose protocol analysis show that the proposed protocol not only can reduces the authentication signaling which generated in between the MTC devices and the core network but also can manages the MTC devices, efficiently.