• Proceedings of the Korean Reliability Society Conference
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• 2002.06a
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• pp.111-111
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• 2002

당사 제품인 건설 중장비용 대형 용접 구조물에 대하여, 설계단계부터 구조해석 및 초도품에 대한 Rig Test, 실차 시험 등 여러 단계를 거쳐 내구성을 평가하고 있다. 그러나 용접품 특성상 수명 평가 및 예측이 용이하지 않아 특히 내구성 개선 또는 효율 증대를 위한 경량화 등의 필요에 따른 설계 변경시 시행착오를 거치는 경우가 많다. 이에 개발 일정의 지연, 시험 비용의 증대 등이 불가피하고, 보증 수명의 증대를 통한시장 확대 등에 있어서도 애로가 있다. 또한 기존 Rig Test의 경우도 실제 사용환경과의 차이 등으로 인해 필드에서의 사용 수명을 예측하는데 한계가 있다. 이에 당 센터에서는 통계적 분석을 통한 사용 조건의 DB 구축과 제품 품질 DB의 구축 및 통합을 통하여 제관품의 특성을 반영한 용접 구조물의 가속 수명 평가법의 신뢰도 향상과 시장 목표에 부합하는 최적 설계 달성을 위한 독자적 Tool을 개발하고 있으며, 이에 대한 첫 번째 과제로 기확보 데이터에 대한 상관관계를 분석하였다.

• Proceedings of the Korean Reliability Society Conference
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• 2002.06a
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• pp.147-155
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• 2002

본 연구에서는 옥외에서 사용하는 소재의 신뢰성 평가(내후성)에 관한 연구를 수행하였는데 국내와 일본의 옥외환경시험장에 시험편을 동시에 폭로하여 기상인자 및 주변환경에 따른 시험편의 특성 변화를 상호 비교ㆍ평가하였고 인공 촉진내후성 시험을 실시하여 옥외내후성과의 상관관계를 관찰하였으며 그 결과는 다음과 같다. 국내 지역의 옥외환경시험장 중에서는 인천 옥외환경시험장에 폭로한 시험편에서 가장 많은 변화를 나타내고 있으며, 일본 지역은 가혹한 기상환경을 나타내는 미야고지마 옥외환경시험장에 폭로한 시험편에서 많은 변화가 나타남을 관찰할 수 있었는데 국내 지역보다는 온도와 습도 등 기상제조건이 더 가혹한 일본 지역의 옥외환경시험장에 폭로한 시험편의 노화가 더 빠르게 진행됨을 관찰하였다.

• Geotechnical Engineering
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• v.4 no.2
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• pp.15-24
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• 1988

To identify the stability of cantilever retaining wall in safe state by the deterministic method, these potential modes of such geotechnical failures as bearing capacity, horizontal sliding and overturning are analysed using Advanced First Order Second Moment (AFOSM) method. All design variables are assumed of the normal distribution and to be statistically independent. Considering the correlations between the single modes, structural system reliability index is 2. 05. Even if the safety factors are larger than the required value in the codes' by the conventional deterministic method, the system reliability of this structure may not be Judged to be safe state since the system reliability index is much lower than general value of 3.

• Korean Journal of Social Welfare
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• v.68 no.3
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• pp.149-180
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• 2016

The purpose of the present study was to examine the validity and reliability of the Korean version of PANSI(Positive and Negative Suicide Ideation: K-PANSI) scale which was developed to measure adolescents' suicide ideation. The study sample consisted of 552 middle school students using a questionnaire survey including the K-PANSI. A reliability analysis, a correlation analysis, and a confirmatory factor analysis were used to test internal consistency(Cronbach alpha), criterion validity (with respect to CES-D, BDI, RES, SWLS), and construct validity. Major study findings are as follows. First, Cronbach' ${\alpha}$ of the K-PANSI scale is supported to some degree by significant correlations with CES-D, BDI, RES, SWLS. Lastly, the confirmatory factor analysis of the K-PANSI scale showed that a two factor model was appropriate with 66.0 percent of explanatory power. These findings suggest that the K-PANSI scale could be used as a reliable and valid measure for adolescent' suicide ideation.

• International Commerce and Information Review
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• v.17 no.3
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• pp.155-176
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• 2015

This study examines the close relationship between trust and global business negotiations. Kristen Blankley(2010) pointed out three level of trust impacting each negotiation stage: calculus-, knowledge-, identification-based trust. In this regard, the present study examines the relationship between each level of trust and the process of business negotiations by focusing on Canadians and Koreans who had business negotiation experience with Chinese counterparts. For Canadian respondents, calculus-based trust and identification-based trust didn't have significant effects on the negotiation atmosphere, whereas they did for Korean respondents. For Canadian respondents, knowledge-based trust had the greatest effect on each step of the business negotiation process.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1991.04a
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• pp.166-175
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• 1991

공구수명에 관한 신뢰성 높은 기준 절삭데이타의 수집은 기계가공시스템을 설계, 운영하는데 중요한 것이다. 이제까지 발표된 절삭공구의 마모측정용 센서로는 절삭저항, AE센사, 진동, 절삭온도 등이 있으며, 이 센서들은 공구마모 특히 플랭크 마모(flank wear) 와 간접적인 관계를 갖고서 별도의 사전 절삭실험에 의해 마모량과 신호 level의 상관관계 및 조정이 필요하기 때문에 본 연구팀에서는 직접적으로 공구마모 상태를 검출하고, 신뢰성이 높은 절삭공구의 마모정보를 얻기 위해 최근 그 응용범위가 확대되고 있는 영상처리기술을 응용한 공구마모 측정장치를 구성하였다.

• Journal of Korea Entertainment Industry Association
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• v.13 no.1
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• pp.157-166
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• 2019

The purpose of this study was to investigate the level of professor trust, achievement motivation, and self-efficacy of health college students in G university, and to analyze the relationship between these variables and its influential factors to provide basic data on improvement of teaching methods and academic achievement. The study period was March 1 through 30, 2018. Study subjects were 276 health college students in G university located in G. City. The survey was conducted by the researcher, described the purpose of the study and distributed and collected the questionnaires. The questionnaire consisted of professor trust 27 items, achievement motivation 28 items and self-efficacy 24 items. As a result, professor trust was higher when the grade was lower and the degree of major satisfaction was better, and in order of the division of the health administration, the department of speech-language therapy, and the department of nursing. Achievement motivation was higher in the first grade than in 4th grade and when the degree of major satisfaction was better. Self-efficacy was higher in order of higher grades. Professor trust, achievement motivation, and self-efficacy were correlated with each other, and achievement motivation and self-efficacy influenced the professor trust. The result of this study suggests that the achievement motivation and self-efficacy of college students will be improved based on the mutual trust among the members of the university.

• The Journal of Korean Academy of Sensory Integration
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• v.20 no.2
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• pp.11-21
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• 2022

Objective : This study examined the test-retest reliability and interrater reliability of the Sensory Processing Scale for Children (SPS-C). Method : Senventy primary caregivers of children with sensory processing difficulties and 3 years old participated in the study. The subjects were recruited through child development centers, welfare centers, and acquaintances located in Seoul, Gyeonggi-do, Busan, and Gyeongsang-do. The test-retest reliability verification targeted 20 main caregivers of children with difficulty in sensory processing. Re-evaluation was performed within 7 to 14 days after the initial evaluation, and Pearson's correlation coefficient was used to confirm the relevance between the two time points, and the Intraclass correlation coefficient was used to confirm the degree of agreement. The interrater reliability verification was conducted with 18 primary caregivers and 18 subsidiary caregivers of children with sensory processing difficulties. Each caregiver evaluated the same child, and the Intraclass correlation coefficient was used to confirm the agreement between the two sets of caregivers. Results : The test-retest reliability was Pearson's correlation coefficient r=.914 and intraclass correlation coefficient ICC=.939, indicating a high level of relevance and agreement. The interrater reliability was an Intraclass correlation coefficient ICC=.727, which showed a moderate level of agreement, but the tactile area (ICC=.455) and proprioceptive area (ICC=.439) were not statistically significant and showed a low degree of agreement. Conclusion : Through this study, it was confirmed that the children's Sensory Processing Scale for Children (SPS-C) is a stable evaluation tool with test-retest reliability and interrater reliability verified, and it will be able to provide help in standardization studies for future clinical use.

• The Korean Journal of Applied Statistics
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• v.22 no.3
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• pp.463-477
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• 2009

This study was intended to examine the mediating roles of trust in CEO and supervisor on the relationships between organizational justice and employee behaviors. Data were collected from 4,055 employees across 18 different companies in Korea. Employees were asked to answer on a self-reported questionnaire. The two dimensions of organizational justice (i.e. procedural justice and distributive justice) were used. Employee behaviors were measured using counter-productive behavior and organizational citizenship behavior. Data were analyzed using a structural equation model. The hypothesized fully mediated model better fitted the data. Relative to distributive justice, procedural justice was more strongly related to both trust in CEO and trust in supervisor. But there were no significant differences in the degree of relationships between the two dimensions of trust and the two types of employee behaviors. These results showed that procedural justice is more important in enhancing trust in leader.

• Proceedings of the Korean DIstribution Association Conference
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• 2005.05a
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• pp.165-191
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• 2005

While a number of studies have recognized the importance of environment of channel systems and consequences of changed environment, only limited studies have dealt with this issue theoretically and practically. The purpose of this study is to empirically validate whether one dimension of environment, called dynamism, has an influence on the relationship characteristics such as transaction specific investment, opportunism and conflict or not; further, it is designed to delve into whether these relationship characteristics have any influence on one crucial relationship quality, 'trust' and its two constituent dimensions - credibility and benevolence. In order to provide empirical validation, a survey was conducted to 163 sales office managers at a major newspaper publisher in Korea. An analysis of the data retrieved from this survey indicated that while environmental dynamism has a positive influence on the publisher's opportunism and conflict perceived by the sales office managers, it did not show a direct influence on the transaction specific investment made by the publisher. Furthermore, while publisher's transaction specific investment had a positive influence on the credibility and the benevolence respectively, publisher's opportunism and level of sales office conflict had a negative influence on the credibility and the benevolence respectively. Currently, a publisher is facing an unprecedentedly dynamic environment. This study should provide ample implications for the publisher in establishing trust, which is a crucial condition in developing and maintaining a long-term successful relationship with its sales offices.