• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2009년도 추계학술대회
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• pp.343-350
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• 2009

대규모 금융권 차세대 프로젝트에서 테스트에 대한 중요성은 재무RISK 관점에서 뿐만 아니라 소프트웨어 품질향상을 위한 결함의 제거 관점에서도 그 의미가 크다. 대규모 차세대 프로젝트는 일반 프로젝트에 비하여 개발되는 소프트웨어의 양이 방대하고 개발참여인원도 일반적인 관리수준을 넘어 수작업에 의한 테스트만으로는 충분한 품질을 보장하지 못한다. 또한 테스트를 수행한 이후에도 지속적으로 변경이 발생하고 이를 반영하는 과정에서 많은 결함이 유입되는 현재의 SI 프로젝트 특성상 지속적인 테스트 및 반복적인 검증만이 소프트웨어의 품질을 보장할 수 있다. 본 논문에서는 code coverage testing기법을 활용하여 동적 테스트 수행결과를 log로 도출하고, log 분석 결과를 통해 소프트웨어 품질의 향상을 기대할 수 있는 방안을 제시한다.

• 천문학회보
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• 제41권1호
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• pp.43.2-43.2
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• 2016

We present results of a calibrator search near twenty evolved stars using the Korean VLBI Network (KVN). Our evolved star targets include candidate sources for a Key Science Project (KSP) of the KVN. The KSP plans to investigate the spatial structure and dynamical effects between SiO and H2O maser regions including mass-loss process and development of asymmetry in circumstellar envelopes of evolved stars. For these purposes, we need compact and strong extragalactic sources close to the evolved stars. We carried out 5 observations in order to detect radio continuum sources that can be used for source frequency phase-referencing (SFPR) -based analysis. We observed 153 sources, out of which we detected 29 at 22 GHz and 20 at 43 GHz at signal-to-noise ratios higher than 50 at all baselines. Therefore, we successfully found target and calibrator pairs for the KVN KSP.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2004년도 추계학술발표대회 논문집
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• pp.191-192
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• 2004

This is on-going project planned from June to August, 2003 for the development of sub-urban housing of 108 buildings on 30,000 pyung lot located in Dochuk-myun, Kwangju-si, Kyunggi-do. The Site is consist of 10 different building sizes ranging from 45pyung to 65pyung on 180 to 220pyung lot. Buyers can customize their types and functions based on given sizes. Most sub-urban housing until now was based on typical planning and had no regard for its characteristics of diverse location. To solve these problems, I designed each types according to its locational characteristics and gave each lot flexible shape to have identities. To take advantage of its undulation, I put playground and sports facilities like swimming pool and tennis court at the approach. Central square to the center and park and observatory to the top

• 농촌계획
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• 제18권3호
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• pp.175-186
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• 2012

This is a study of a residential area for displaced villagers planned for residents of Gyodo Village who must evacuate their hometown because of flooding due to the Hantan River Dam Project. The study aims to construct a plan for a new residential area for the villagers focusing on reflecting the existing characteristics of their former village and on ensuring sustainability for the new village. Departing from previous practice of focusing on merely physical aspects when planning, the current study is significant in that it presents a new planning process and method for a sustainability-focused plan. While the study has many limitations such as objectivity in the process of deriving the sustainability indicators and the appropriateness of the indicator questions, it is hoped that future studies on sustainability will serve to make up for these limitations and problems.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 1997년도 춘계학술발표회논문집(2)
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• pp.341-344
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• 1997

A vitrification process is under development in KEPRI for the treatment of low-and medium-level radioactive waste. Although the project is for developing and building Vitrification Pilot Plant in Korea, one of KEPRI's concerns is the quality control of the vitrified glass. This paper discusses a methodology for the estimation of glass composition by on-line measurement of molten glass properties, which could be applied to the plant for real-time quality control of the glass product. By remotely measuring viscosity and density of the molten glass, the glass characteristics such as composition can be estimated and eventually controlled. For this purpose, using the database of glass composition vs. physical properties in isothermal three-component system of SiO$_2$-Na$_2$O-B$_2$O$_3$, a software TERNARY has been developed which determines the glass composition by using two known physical properties(e.g. density and viscosity).

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.361-369
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• 2022

Unsafe actions and behaviors of workers cause most accidents at construction sites. Nowadays, occupational safety is a top priority at construction sites. However, this problem often requires money and effort from investors or construction owners. Therefore, decreasing the accidents rates of workers and saving monitoring costs for contractors is necessary at construction sites. This study proposes an unsafe behavior detection method based on a skeleton model to classify three common unsafe behaviors on the scaffold: climbing, jumping, and running. First, the OpenPose method is used to obtain the workers' key points. Second, all skeleton datasets are aggregated from the temporary size. Third, the key point dataset becomes the input of the action classification model. The method is effective, with an accuracy rate of 89.6% precision and 90.5% recall of unsafe actions correctly detected in the experiment.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.606-607
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• 2015

The traffic volume on the road shows various trends reflecting regional characteristics for monthly and hourly, and economic loss affecting users varies according to the selected period for the maintenance of road pavements. Therefore, in this study, the user cost (or delay cost) for monthly and hourly on the work zone near the Maesang Bridge Section on Poseung-Gu, Pyeongtaek-si, Gyeonggi-do was calculated using the time series models and VISSIM, and based on the result, the effect of user cost reduction according to the selection of best maintenance period was examined. The analysis result showed that the month of the lowest user cost occurred due to the maintenance of target section was January (10,293,258 KRW/Day×1km) and the month of the greatest user cost occurred was November (13,337,495 KRW/Day×1km).

• 실천공학교육논문지
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• 제15권2호
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• pp.485-494
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• 2023

The purpose of this study was to examine the relationship between writing self-efficacy and academic achievement in a project-based university writing class, and the mediating effect of reflective journal writing. A total of 135 college students participated in the study. The results showed that students with higher writing self-efficacy had higher academic achievement and wrote more reflective journaling. Reflective journaling was found to have a positive impact on reviewing learned content, improving metacognition and memory, and promoting idea development. Overall, consistent reflective journal writing not only enhanced writing self-efficacy but also positively influenced academic performance.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제14권2호
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• pp.158-170
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• 2008

무한 경쟁체제인 시장에서 변화하는 요구들을 수용하기 위한 해결책으로, SK 텔레콤은 향후 10년간 증가할 대용량의 데이타 및 트랜잭션을 처리하고, 다양한 마케팅활동 지원이 가능한 새로운 마케팅 시스템을 구축하였다. 이 시스템은 기존의 메인프레임 기반의 COIS시스템을 유닉스기반의 클라이언트 -서버 구조로 변경한 것이며, 웹브라우저 기반 인터페이스를 제공한다. NGM(Next Generation Marketing) 이라고 명명된 이 프로젝트는 그 규모가 전례가 없이 매우 컸다. 그러나 관리 및 기술적 문제들로 인하여 프로젝트는 위험을 맞게 되었다. 기존의 거대 벤더들이 제공하는 소프트웨어 솔루션에 기반한 어플리케이션 프레임워크가 새로운 시스템의 다양하고 방대한 요구조건을 충분히 소화시키지 못했기 때문이다. 결국 2005년 3월 SK텔레콤은 NGM 프로젝트를 보류하였다. 2005년 5월 종합적인 기획 수정을 통해 프로젝트는 2단계에 착수되었다. 새로운 시스템의 복잡도에 대응하기 위해 더 이상 단일 솔루션을 택하지 않기로 결정하여, 새로운 시스템은 커스팀 빌트의 형태가 되었다. 본 논문에서는 성공적인 NGM 프로젝트 수행을 위해 고려된 3가지 기술적 요소 - 미들웨어 및 어플리케이션 프레임워크, 데이타베이스 아키텍처, 튜닝 및 시스템 퍼포먼스 - 에 대하여 다루고 있다. NGM 구축에 있어서 적용된 이 프로세스 및 접근방법은 텔레커뮤니케이션 사업분야에서의 가장 성공적인 실제 적용사례로 볼 수 있다. 완성된 NGM 시스템은 2006년 10월 9일 성공적으로 가동되었고, "U.Key 시스템"으로 명명되었다. 이 새로운 시스템은 가까운 미래에 혁신적이고, 효과적이며 고객지향적인 어플리케이션 둥을 제공할 수 있을 것으로 기대된다.

• 대한치과의사협회지
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• 제57권10호
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• pp.560-568
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• 2019

Purpose: This study evaluated the antibacterial effects of curcuma, ginger, and finger root extracts in water-soluble powder on planktonic Streptococcus mutans(S.mutans), which is known to cause dental caries, in order to confirm whether these extracts could perform as photosensitizers for the effects of photodynamic therapy (PDT). Methods: This study used the strain of streptococcus mutans ATCC 25175 distributed by the Korean Collection for Type Cultures of the Korea Research Institute of Bioscience & Biotechnology. Commercial edible curcuma, ginger and finger root were used as the natural extracts for the use of photosensitizer. To extract organic solvent, 3 g of each powder was mixed in $30m{\ell}$ of dimethyl sulfoxide (DMSO, VWR, Germany) before extraction. $1.8m{\ell}$ of the photosensitizer solution, manufactured in the concentrations of 5, 0.5, and $0.05mg/m{\ell}$, was mixed with $0.2m{\ell}$ of the S. mutans culture medium that had been cultured for 2 days. To induce the photodynamic reaction, Qraycam (AIOBIO, Seoul, Korea) equipped with 405 nm LED was used to expose light for 5 minutes to irradiate 59 nW energy for 300 seconds. Results: Compared with the case with no light, a higher photodynamic therapeutic effect was confirmed with $0.05mg/m{\ell}$ curcuma powder extract, the concentration of $0.5mg/m{\ell}$ and LED light of 405 nm wavelength (p=0.000, p=0.003). $0.05mg/m{\ell}$ of curcuma powder extract and the concentration of $0.5mg/m{\ell}$ showed 100% antibacterial effect when exposed to light, whereas the concentration of $5mg/m{\ell}$ showed 11.95% antibacterial effect. When exposed to light, $0.05mg/m{\ell}$ of ginger powder extract showed an antibacterial effect which didn't statistically decrease. The concentrations of $0.5mg/m{\ell}$ and $5mg/m{\ell}$ did not show any antibacterial effects. As a result of examining any photodynamic therapeutic effects of finger root powder extract on S. mutans, no statistically significant effect was found. Conclusion: The curcuma powder extract is expected to perform as a photosensitizer. Even though belonging to the same ginger family, ginger powder and finger root powder seem difficult to perform as photosensitizer.