• Proceedings of the Korea Inteligent Information System Society Conference
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• 2007.11a
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• pp.586-591
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• 2007

지식 관리 시스템, 정보 검색 시스템, 그리고 전자 도서관 시스템 등의 문서를 다루는 시스템에서는 문서의 구조화 및 문서의 저장이 필요하다. 문서에 담겨있는 정보를 추출하기 위해 가장 우선시되어야 하는 것은 키워드의 선별이다. 기존 연구에서 가장 널리 사용된 알고리즘은 단어의 사용 빈도를 체크하는 TF(Term Frequency)와 IDF(Inverted Document Frequency)를 활용하는 TF-IDF 방법이다. 그러나 TF-IDF 방법은 문서의 의미를 반영하지 못하는 한계가 존재한다. 이를 보완하기 위하여 본 연구에서는 세 가지 방법을 활용한다. 첫 번째는 문헌 속에서의 단어의 위치 및 서론, 결론 등의 특정 부분에 사용된 단어의 활용도를 체크하는 문헌구조적 기법이고, 두 번째는 강조 표현, 비교 표현 등의 특정 사용 문구를 통제 어휘로 지정하여 활용하는 방법이다. 마지막으로 어휘의 사전적 의미를 분석하여 이를 메타데이터로 활용하는 방법인 언어학적 기법이 해당된다. 이를 통하여 키워드 추출 과정에서 문서의 의미 분석도 수행하여 키워드 추출의 효율을 높일 수 있다.

• Journal of the Korea institute for structural maintenance and inspection
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• v.20 no.6
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• pp.65-72
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• 2016

Service life evaluation for RC Structures exposed to chloride attack is very important, however the previous two methods(deterministic and probabilistic method) show a big difference. The paper presents a service life simulation using deterministic and probabilistic method with time-dependent diffusion coefficient. Three different cases are considered for diffusion coefficient, concrete cover depth, and surface chloride content respectively, and then the PDF(probability of durability failure) and the related service life are obtained. Through adopting time-dependent diffusion, the discrepancy between the two methods can be reduced, which yields reasonable service life. When diffusion coefficient increases from $2.5{\times}10^{-12}m^2/sec$ to $7.5{\times}10^{-12}m^2/sec$, the service life decreases to 25.5~35.6% level, and cover depth does from 75 mm to 125 mm, it increases to 267~311% level as well. In the case of surface chloride content from $5.0kg/m^3$ to $15.0kg/m^3$, it changes to 40.9~54.5%. The effect of cover depth is higher than the others by 8~10 times and also implies it is a key parameter to service life extension.

• Journal of the Korean Association of Geographic Information Studies
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• v.26 no.4
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• pp.200-217
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• 2023

The purpose of this study is to analyze the urban spatial network of Busan in a time-series manner to examine the planning role of centeral area change and spatial management. The analysis method used the ASA(Angular Segment Analysis) technique of the space syntax theory, and the analysis period was divided into three periods from 1937 to 2022, when the Busan urban planning was established. As the result, the center area formed in Nampo-dong and Gwangbok-dong were differentiated and moved to Seomyeon, and then the process of redifferentiated into Yeonsan was confirmed in Seomyeon. It is also room for the center area to move to the western region in the future, and it was possible to identify the center area formed by the policy-set and amenity elements. In addition, we examined the system of urban spatial structure through the intelligibility analysis of space syntax theory, and found that the qualitative interpretation of existing studies and the interpretation from the perspective of space syntax theory were consistent with each other. Through this, it was possible to confirm that the role of the plan for space management.

• Information Systems Review
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• v.8 no.2
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• pp.189-209
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• 2006

Business expects that IT investment would maximize the effects, like availability, timeliness, rapidity of information, by practical using of information technology for a strategic goal. However, it is not clear yet that IT investment would increase business productivity and could create profitability in the end-the linkage between IT investment and business KPI(Key Performance Indicator). In this case study(only provides post-evaluation case), we suggested integrated IT ROI(Return On Investment) methodology with a consistent and integrated view, on the base of practical implementation at Korean financial company. Especially, we evaluated connection between IT and business strategy, made business-related IT KPI development methodology, suggested framework for sustainable IT evaluation and management.

• Korean Journal of Construction Engineering and Management
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• v.1 no.1 s.1
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• pp.80-86
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• 2000

The future costs of energy and the cost of the repair of apartment buildings are expected to rise continuously in proportion to the initial costs. Therefore it has become important for these increasing costs to be incorporated and reflected in the design of the building. Systems such as structure and services for the buildings remain constant, but a number of the walls and windows can vary and thus have a major influence on the total construction and running costs of a building. The critical factor in the apartment unit design for the optimization of life cycle cost (LCC) is the ratio of the x and y axis of the walls in the unit plan. This paper demonstrates how to achieve the optimal size and thus optimize the LCC of the building.

• Journal of Korea Water Resources Association
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• v.54 no.7
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• pp.545-552
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• 2021

The burden of flood control on the dam under frequently flood due to climate change and especially heavy flood in 2020 year are come to the forward and increased. The objective of the study is therefore to establish the method to estimate capacity and target water level for flood control in actual dam management. Frequency matching method was applied to establish a pair of cumulative distribution function (CDF) based on daily dam inflow and discharge records. The relationship between dam storage and discharge volume represented as a percentage of inflow volume was derived and its characteristics was analyzed. As the result, the Soyanggang (45%) and Chungju Dam (39%) contributing to flood control with temporarily storing flood runoff. The method and diagram to estimate flood control capacity and target water level for flood control in the dam were established. The result of the study could be used as a supplementary data for flood control of the dam according to the rainfall prediction on the Korea Meteorological Administration.

• Journal of the Korea Society of Computer and Information
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• v.26 no.4
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• pp.169-179
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• 2021

The purpose of this study is to examine types and characteristics of self-regulation which explain how individual diabetic patients determine their behavior in terms of diabetes management. Based on the results, we proposed the management method of the diabetic patients. As a method of analyzing the subjectivity of each item, a Q method study was used. There were 38 subjects who were treated with oral drugs or insulin injections, but not currently hospitalized. And 40 statements in Q samples were classified in the form of a normal distribution using a 9-point scale. Research results regarding self-regulation in diabetic patients, type 1 is evidence-based compliance, type 2 is crisis responding denial reaction, type 3 is information-based orientation to relationship, type 4 is independent practice, and type 5 is willingness deficit impulse reaction. Therefore, for effective management of diabetic patients, it is necessary to understand the characteristics of each type of self-regulation and develop a program that reflects motivation for diabetes management, improvement of confidence, and countermeasures for negative emotions related to disease.

• Journal of International Area Studies (JIAS)
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• v.14 no.3
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• pp.57-80
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• 2010

This study aims at the evaluation of procedural changes and policy outcome caused by the Open Method of Coordination(OMC) on Social Inclusion in the European Union. The policy instruments of the OMC introduced by the Lisbon Council can be divided into two groups: the outcome-oriented New Public Management(NPM) and the process-oriented Directly Deliberative Polyarchy(DDP). By considering the adoption process of the NPM instruments, it can be said that OMC could not be effective due to the vagueness of its objectives, the institutional barriers in decentralized decision-making, and the rejection of benchmarking by the Member States. The intended learning by deliberation and peer review as indicated by the normative DDP, is hard to achieve because they are not so reflexive due to relatively restricted and closed participation. We also cannot find any significant reduction of poverty after the long implementation of the OMC. Considering the higher recognition of poverty problem and expanding NGOs concerned with it, however, we may see some significant impact in the future.

• Korean Journal of Construction Engineering and Management
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• v.11 no.1
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• pp.160-169
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• 2010

In domestic public works, there are several problems in the measurement of payments based on the bill of quantity, which doesn't match with the activity progress rate, heavy paper works and complicated procedures. It can be classified formal and simplified method. By using the simplified method, it can be solved many problems by summarizing the procedure, but is not generally used. This paper proposes a payment method by progress measurement for specified activity based on WBS(Work Breakdown Structure) verifying efficiency which reduced cost account and advanced work on payment compare to method of domestic public works using the data about construction of eco-river. This method will be an important contribution on being a base for cost-schedule integrated management which were verified and also improving efficiency on measuring payment.

• 한국경영정보학회:학술대회논문집
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• 2007.11a
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• pp.300-305
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• 2007

재무성과와 지식자산을 함께 관리할 수 있는 통합적 성과평가 방법을 도입함으로써 미래 기업가치를 제고시킬 수 있는 필요성이 증가하고 있다. 국제적인 추세에 발맞추어 본 연구의 목적은 지식자산 평가에 대한 기존 연구와 Kaplan & Norton이 주창(1992)한 균형잡힌 성과기록표(Balanced Score Card : BSC)를 이용하여 지식자산 평가 지표 개발과 이러한 평가를 위해 Saaty가 개발한(1980) 계층적 분석과정(Analytic Hierarchy Process : AHP)방법론을 적용한 평가모델을 제시하고, 국내 A은행을 대상으로 지점을 평가하는 연구를 수행하였다.