• Journal of Korea Water Resources Association
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• v.46 no.6
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• pp.585-596
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• 2013

The objective of this study is to evaluate the hybrid downscaling method combined Step-Wise Scaling (SWS) method with Regional Climate Model (RCM) simulation data for climate change impact study on hydrology area. The SWS method is divided by 3 categories (extreme event, dry event and the others). The extreme events, wet-dry days and the others are corrected by using regression method, quantile mapping method, mean & variance scaling method. The application and evaluation of SWS method with 3 existing and popular statistical techniques (linear scaling method, quantile mapping method and weather generator method) were performed at the 61 weather stations. At the results, the accuracy of corrected simulation data by using SWS are higher than existing 3 statistical techniques. It is expected that the usability of SWS method will grow up on climate change study when the use of RCM simulation data are increasing.

• The Journal of the Korea Contents Association
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• v.6 no.2
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• pp.84-92
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• 2006

In this paper, we propose an efficient multicasting algorithm in multistage interconnection networks (MIN's) employing the region encoding scheme. The proposed algorithm uses the recursive scheme to recycle a multicast message at most two times through MIN, in order to send it to its desired destinations. It is composed of two recycling phases which are the copying phase and the routing phase of the multicast message. In the first phase, a source sends the message to a region that contains the largest number of destination regions, and destinations in these regions receive and store the message in this phase. The remaining destinations can finally receive the message in the second phase. This method of the algorithm can improve its performance by reducing the delay of message and the volume of traffic. Moreover, we evaluate the performance of our algorithm in terms of the average number of recycling and the number of internal links used per destination, comparing with the previously proposed algorithm.

• The Transactions of the Korea Information Processing Society
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• v.4 no.7
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• pp.1719-1732
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• 1997

In the software development process, various development product are made in each phase of lifecycle. Formless software is visualized by products, and quality management is implemented by management for products. But, because standardization for products which is made in the development process is not established practically, developers use different development methodologies or documentation specifications. Therefore the reality is that quality evaluation is not implemented along standardized methodology or systematic process. In this paper, we constructed quality management system and designed and implemented analysis phase quality evaluation toolkit. We constructed quality external and internal character to evaluate software quality for quality management and constructed relational metrics and system of qualitative quantitative evaluation element items and, under these systems, we constructed quality evaluation toolkit and Implemented functions and evaluated products.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2001.05a
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• pp.298-303
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• 2001

화장품은 그 어떤 제품보다도 소비자가 사용 시 느끼는 관능특성 및 그에 대한 만족도가 중요한 제품이다. 자연스러우면서도 가벼운 메이컵이 유행함에 따라 페이스 파우더를 사용하는 소비자의 비중이 높아지고 그에 따라 다양한 관능특성을 가진 페이스 파우더들이 개발되고 있다. 사전 조사에 따르면 페이스 파우더 사용자들의 사용이유는 자연스러운 화장 및 가벼운 화장, 화사해 보임(블루밍 효과) 등이 주를 이루며 페이스 파우더 사용 시에 주요하게 느끼는 관능특성으로는 파우더 입자에 관한 사항과 화장상태에 관한 사항이 동시에 고려되는 것으로 나타났다. 이에 평상시에 페이스파우더를 주로 사용하는 여성들을 대상으로 다양한 페이스파우더들을 실제 화장단계에 따라 사용하면서 인지되는 페이스 파우더의 관능특성들을 도출하게 한 결과 중 19가지 관능특성 평가 용어가 도출되었으며 이 용어들은 다시 입자 및 도포 요인/촉촉함 및 매트함 요인/색상 및 블루밍 요인의 세가지 요인으로 분류되었다. 이러한 페이스파우더의 주요 관능특징요인과 소비자들이 중요하게 생각하는 관능특성을 적절히 조합하여 각각의 소비자군들이 선호하는 관능속성의 제품을 설계하고 평가할 수 있는 평가방법을 개발하였고 주후 제품개발에 활용하고자 한다.

• 한국IT서비스학회:학술대회논문집
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• 2003.05a
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• pp.523-530
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• 2003

소프트웨어에 대한 인식과 중요성이 대두되고 있으나 아직 소프트웨어 품질에 대한 우리의 관심은 부족한 실정이며, 저질 소프트웨어로 인한 유지보수 업무의 부담과 비용을 가중시키는 것이 현실이다. 따라서 국제표준화 규격인 IS0/1EC 9126에서 제시하고 있는 소프트웨어 품질특성 기능성, 신뢰성, 사용성, 효율성, 보수성 및 이식성을 중심으로 유지보수단계에서의 소프트웨어 품질을 어떻게 측정하고 평가하는 방안과 기법을 제시하고자 한다.

• Proceedings of the Korea Society for Simulation Conference
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• 1999.04a
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• pp.32-36
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• 1999

본 연구에서는 대공 무기체계의 성능평가를 위한 시뮬레이션 모델의 개발로서 능력추정을 위한 수식의 전개와 전산프로그램을 개발하고 예제를 통하여 능력산출 예를 보였다. 본 연구에서 고려된 시뮬레이션 방법으로 Mon Carlo 시뮬레이션과 Karman Filtering을 사용하였다. 본 모델의 주요 단계로서 1) 가장 최단 경로에서의 표적과 탄두간의 상대 속도와 위치를 결정하고, 2) 표적의 탄두에 대한 취약면적을 산출하고 3) 마지막으로 표적살상 확률을 산정하는 과정의 단계에 따라 개발되었다.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2023.11a
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• pp.271-272
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• 2023

본 논문에서는 대학 캠퍼스 내 배달로봇 사용 시 환경적 특성에 의한 유해위험요인을 사전에 발굴하고 로봇의 출발지에서 목적지까지 발생할 수 있는 위험을 단계별로 추정·판단하여 위험을 감소에 대한 필요성에 관한 연구를 수행하였다. 캠퍼스 내 주행 구간별 유해위험요인을 파악 및 단계별 위험성 추정을 위하여 배달로봇을 사용하기 전 위험성을 사전에 확인할 수 있는 위험성평가의 필요성을 제시한다. 배달로봇 시장의 확대로 인한 사람과의 접촉 증가에 비하여 안전대책 연구가 미흡한 실정이며, 로봇의 기술적 진보와 사용자들의 정서적 수준에 뒤처지지 않는 적절한 안전대책을 마련해야 한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.10
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• pp.640-647
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• 2018

Many harbor structures have been constructed, and some structures are now under construction in Korea, which is a peninsular state and a logistics hub in Northeast Asia. Expansions and extensions of existing harbors are also being planned to meet increasing natural disaster threats. Wave-dissipation concrete blocks are recycled or discarded based on the personal experience of engineers only, and there are no safety checks or criteria. To check the safety of used blocks, material evaluations were done by visual inspection of blocks on the ground and under water and from 20 non-destructive measurements of the rebound hardness test and 3 concrete core samples. Wave-dissipation blocks are sometimes fully or partially damaged in the process of transferring and mounting them or during construction. Therefore, a safety check is essential for recycling blocks with an evaluation of materials while considering the construction phases. To do this, a block was modeled with a 3D finite element method using ADINA, and impact analyses were done according to the transfer, mounting, and construction phases. From the results of the impact analyses and material evaluation, the safety checks and reasonable evaluation of used blocks were examined, and detailed construction methods are proposed. The methods are expected to maximize the reuse of used wave-dissipation blocks from an economical point of view.

• Journal of Broadcast Engineering
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• v.24 no.2
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• pp.341-352
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• 2019

The inconvenience of using the product weakens the competitiveness of the product and makes it difficult to obtain various users. This study proposes a 5-step evaluation method that is derived from a formal usability evaluation to suggest improvement directions for easier and more convenient manipulation of complex or inconvenient user interface. The 5-step usability evaluation method can not be applied to all broadcasting equipments, but it is expected to improve the user interface of broadcasting equipments. In addition, it is expected to provide an opportunity to more flexible access to user interface development to be applied to new application services in a variety of telecommunication convergence equipment industry, while leading the era of convergence of broadcasting industry throughout broadcasting equipment industry.

• Spatial Information Research
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• v.9 no.1
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• pp.137-154
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• 2001

Process models are concerned with determining the key phases in the adoption process. therefore, process approaches strive to analyze the key steps or decisions in understanding how the innovation is successfully adopted. Objective in this study was to complement variance procedures with a process evaluation. Following are the major findings of this research. First, simply acquiring a new system does not automatically guarantee its successful adoption throughout the local government Second, problems with the adoption of a new technology is often based on human and organizational issues rather than on technical concerns.