• 대한조선학회논문집
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• 제56권6호
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• pp.473-479
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• 2019

Welding is one of the most popular joining methods and most welding quality estimation methods are executed using joined material. This paper propose welding quality estimation methods using dynamic current, voltage and resistance which are obtained during welding in real time. There are many kinds of welding method. Among them, we focused on the projection welding and gathered dynamic characteristics from two different types of projection welding. For image learning, graphs are drawn using obtained current, voltage and resistance, and the graphs are converted to images. The images are labeled with two sub-categories - normal and defect. For deep learning of images obtained from welding, Convolutional Neural Network (CNN) is applied, and Tensorflow was used as a framework for deep learning. With two resistance welding test datasets, we conclude that the Convolutional Neural Network helps in predicting the welding quality.

• 한국품질경영학회:학술대회논문집
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• 한국품질경영학회 2006년도 춘계학술대회
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• pp.28-41
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• 2006

In this study, an investigation was done into service quality factors of infant education institutes, after which a positive verification was made in the rotation of cause and effect between service quality, service value and customer satisfaction. Based on this verification, strategies were presented for plans to improve the service qualify of infant education. In addition, identification was made into factors that affect customer satisfaction, re-registration intention and recommendation to others in putting forward service operational strategies for infant education institutes and making a comparative analysis on kindergartens and daycare centers.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.483-494
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• 2009

Since the embedded system is more intelligent, the importance of the reliability in the embedded system is a lot more visible. Especially the reliability of the embedded system in the train control system is even better important. As the special quality of the embedded system, the hardware of the system is directly controlled by the software in the embedded system. As the expansion of complexity, the expense amd the time for verification is required more and more. This paper is presented the verification of the reliability as the method with background of failure Embedded system is gradually, the importance of 'A built-in on the system embedded system's reliability is focused. In particular, in the train control system built-in of the embedded system, reliability is even more important. The embedded system of the system controls over hardware, software with built-in directly. The more complex system is, the more increasable of depending on the reliability of the time verification and expensive is. This paper is about he characteristics of the reliability and verification of embedded system under the failure mechanisms, based on the verification methodology suggested by in the train control system.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 하계종합학술대회 논문집(2)
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• pp.325-328
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• 2001

This paper describes a VHDL code coverage checker for If design and verification. Applying the verification coverage to IP design is a methodology rapidly gaining popularity. This enables the designers to improve the IP design quality and reduces the time-to-market by providing the Quantitative measure of simulation completeness and test benches. To support this methodology, a VHDL code coverage model was defined and the measurement tool was developed.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2004년도 학술발표회
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• pp.1400-1403
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• 2004

The current industrial development and the Increase of population along Nakdong River have produced a rapid Increase of wastewater discharge. This has resulted in problem of water quality control and management. Although many efforts have been carried out, water quality has not significantly improved. The goal of this study is to design a NGIS-based water quality management system for the scientific water quality control and management in the Nakdong River. For general water quality analysis, QULA2E model was applied to the Nakdong River. A sensitivity analysis was made to determine significant parameters and an optimization was made to estimate optimal values. The calibration and verification were performed by using observed water quality data for Nakdong River. A water qualify management system for Nakdong River was made by connecting the QUAL2E model to ArcView. It allows a Windows-based Graphic User Interface(GUI) to implement all operation with regard to water quality analysis. The modeling system in this study will be an efficient NGIS for planning of water quality management.

• 산업기술연구
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• 제30권B호
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• pp.125-135
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• 2010

The influences on water quality of each river by effluents from environmental facilities $located^{*}$ in 14 unit watersheds of North- and South-Han River, and Gyungan-cheon were analyzed. Also, the water quality modeling for study area was carried out to analyze the improvement effect of water quality by the strengthening of T-P effluent standard of environmental facilities. For the calibration and verification of model, water quality data and effluent loading calculated for 2006 were used. Data of low water period were used for calibration, and normal water period for verification. The results of calibration and verification were well matched with the real water quality dataset of revers. Also, the validity of the results were estimated using RI (Reliability Index) method. When the T-P effluent standards for environmental facilities were strengthened, T-P concentrations were predicted to improve from $0.025mg/{\ell}$ to $0.023mg/{\ell}$ in the outlet location of North-Han River, from $0.056mg/{\ell}$ to $0.040mg/{\ell}$ for South-Han River,and from $0.233mg/{\ell}$ to $0.146mg/{\ell}$ for Gyungan-cheon. Also, the T-P concentrations of tributaries including Jojong-cheon, Dal-cheong, Sumgang, Chungmi-cheon, Bokha-cheon, Heuk-cheon, and Wonju-cheon were predicted to improve from $0.063mg/{\ell}$ to $0.010mg/{\ell}$, from $0.091mg/{\ell}$ to $0.053mg/{\ell}$, from $0.199mg/{\ell}$ to $0.100mg/{\ell}$, from $0.168mg/{\ell}$ to $0.148mg/{\ell}$, from $0.186mg/{\ell}$ to $0.105mg/{\ell}$, from $0.019mg/{\ell}$ to $0.013mg/{\ell}$, and from $0.822mg/{\ell}$ to $0.236mg/{\ell}$, respectively.

• 임상간호연구
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• 제27권1호
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• pp.23-34
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• 2021

Purpose: The purpose of this study is to examine the mediating effect of professional quality of life among hospital nurses in the effects of workplace bullying, social support and resilience on retention intention. Methods: A descriptive and cross-sectional study was conducted on 414 hospital nurses who worked for at least two months at a general hospital in the Seoul metropolitan area. The data were analyzed using IBM SPSS 23.0/AMOS 22.0 programs and employed reliability verification, descriptive statistics include frequency analysis, confirmatory factor analysis, structural equation modeling, and bootstrapping. Results: As a result of the study's structural modeling verification, workplace bullying had a negative effect, social support had a positive effect, resilience had a positive effect on professional quality of life, and professional quality of life had a positive effect on retention intention. Also, workplace bullying, social support, and resilience did not directly impact on retention intention. However, the professional quality of life had a complete mediating effect in the relationships between workplace bullying, social support, resilience and retention intention. The study results verified the mediating effect of professional quality of life affecting the retention intention. Conclusion: In order to improve professional quality of life and retention intention, strategies to prevent workplace bullying and promote social support and resilience are needed.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2022년도 춘계학술대회
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• pp.88-90
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• 2022

해양 디지털 항로표지 정보 협력 시스템 과제에서 개발되는 소프트웨어의 품질 관리를 위해 국제 표준 기반 표준 품질 프로세스와 프로젝트 관리 시스템 기반 의사소통 및 정보공유 체계를 구축했다. 또한 연구과제 산출물 작성 현황에 대한 모니터링과 소프트웨어 품질 점검 및 검증 지원을 통해 고품질 소프트웨어 개발을 달성한다.

• 컴퓨터교육학회논문지
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• 제9권4호
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• pp.43-54
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• 2006

웹 기반 학습 시스템의 사용자 요구는 일반적으로 기능 요구와 비기능 요구로 구분된다. 그 중 사용자가 원하는 품질 관련 비기능 요구는 개발자가 반드시 검증해야 할 주요 사항이지만 기능 요구와는 달리 확인 과정에 많은 어려움이 있었다. 본 논문은 웹 기반 학습 시스템의 개발에 적용할 수 있는 검증 기법으로서 품질 관련 비기능 요구사항이 적절히 구현되었는지를 검증하는 방법을 제안한다. 특히 효율성, 사용용이성과 같은 품질 요구가 설계에 영향을 주는 과정을 추적해 얻은 정보를 검증에 이용함으로써 이를 비기능 요구가 적절히 구현되었는지 확인할 수 있게 한다.

• 한국측량학회지
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• 제18권4호
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• pp.387-394
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• 2000

항공사진영상을 데이터베이스화하는데 있어서 가장 큰 오차의 원인은 자동독취기의 독취 과정에서 발생한다. 현재 수행하고 있는 항공사진영상 데이터베이스 구축사업의 품질 확보를 위해서는 자동독취 과정에서 발생하는 정확도를 검증하는 과정이 필요하게 된다. 따라서. 본 연구에서는 항공사진영상 데이터베이스 구축에 이용되는 항공사진 전용 자동독취기의 정확도 검증방법을 정립함으로써 항공사진영상 DB의 정형적인 품질확보 방안을 제시하는데 목적이 있다. 본 연구의 수행을 통해 항공사진영상 DB의 품질확보를 위한 자동독취기 정확도 검증방안을 제시하였으며, 본 연구를 통해 정립된 방법을 실제 항공사진영상 DB구축과정에 적용한 결과 자료의 품질확보에 기여할 수 있음을 알 수 있었다.