• 한국조명전기설비학회:학술대회논문집
• /
• 한국조명전기설비학회 2007년도 춘계학술대회 논문집
• /
• pp.458-462
• /
• 2007

It is necessary to study a conductive characteristics of electrical facilities covered with particulate for the analysis of electrical accidents in vulnerable area where are included market place, a sawmill and so on. Therefore, there are studied on risk assessment and contact angle measure(CAM) according to surface deterioration of PVC and phenolic resin Through the contact angle measure of samples, there are ascertain whether hydrophobicity or not. These data would used to be judged by the causes of electrical accidents.

• 통상정보연구
• /
• 제16권5호
• /
• pp.203-221
• /
• 2014

본 연구는 본사와 해외자회사간 협력에 대해 기술변화 및 경쟁강도와 같은 외부환경요인들의 영향을 검증하였다. 연구프레임워크의 타당성에 관해 한국기업의 샘플을 통하여 실증적으로 테스트하였다. 검증결과는 외부환경요인의 불확실성이 증가할수록 조직적 조정으로서 본사와 자회사간 협력수준이 큰 것으로 나왔다. 즉, 연구결과에서 기술변화와 본사-자회사간 협력 간에 유의적인 상관관계가 있음을 보여주고 있다. 기술변화는 본사와 자회사간 협력에 대해 긍정적인 영향을 미치는 것으로 나타났다. 또한 실증적결과는 경쟁강도가 본사와 자회사간 협력에 대해서도 직접적인 영향을 주고 있음을 보여 주었다.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2015년도 제46회 하계학술대회
• /
• pp.1541-1542
• /
• 2015

본 논문에서는 휴대용 IT 기기 및 EV, ESS 등 사용이 급증하고 있는 리튬 폴리머 배터리의 화재사고 원인 분석기법에 대하여 나타내었다. 사고 원인 분석기법은 사례분석을 통하여 외형 및 탄화패턴 분석을 통한 발화 추정위치로 외력에 의한 사고 및 내부 절연 열화에 의한 사고 원인 분석 등을 나타내었다. 사고원인 분석은 배터리 안전성 확보와 사고 재발 방지를 위한 대책 마련에 필수적인 기술로 향후 증가하는 제품사고에 대한 분석기법 개발에 기초연구로 활용하고자 한다. 본 논문에서 제시한 분석기술과 향후 내부 절연 열화 원인 분석 기법을 개발하여 리튬 계열 배터리에서 발생하는 사고에 대하여 정확한 원인 분석에 활용할 것이다.

• 전기학회논문지
• /
• 제67권8호
• /
• pp.1106-1112
• /
• 2018

In this paper, measurement techniques are presented to test the performance of insulation without interruption if it is difficult to measure insulation resistance. Especially, non-contact voltage phase detection techniques have been developed that can be applied in environments where it is difficult to find voltage measurement locations such as component receptors. The performance verification of the non-interrupting insulation resistance measuring devices has been tested against existing products using standard calibration equipment and test jigs. The validation confirmed performance within 2 % for direct contact type and within 10 % for non-contact type. In addition, the procedure to make continuous insulation test using the equipment was proposed.

• 통상정보연구
• /
• 제15권1호
• /
• pp.117-134
• /
• 2013

본 연구는 신제품개발 시의성, 표준화 및 국제신제품시판 시의성간의 관계에 대해 본사-자회사간 협력의 조절효과를 검증하였다. 검증결과는 본사-자회사간 협력이 신제품개발 시의성과 국제신제품시판 시의성간의 관계에 대해 조절효과를 보였다. 그러나 본사-자회사간 협력은 표준화와 국제신제품시판 시의성간의 관계에 대해 조절효과를 보이지 않고 있다. 기업에서 본사와 자회사간 긍정적인 관계, 오픈 커뮤니케이션, 정규적인 상호작용을 갖는 경우에는 개발된 신제품이 해외시장에 더욱 빠르게 출시됨을 알 수 있다. 즉, 당초 계획한 시간프레임에서 개발한 제품들이 보다 빠르게 해외목표 국가시장에 출시하는데 본사와 자회사간 긍정적이고 효과적인 협력관계가 중요함을 보여준다.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2005년도 제36회 하계학술대회 논문집 C
• /
• pp.1832-1834
• /
• 2005

In the electrical equipments, there are lots of phenomena such as loosening of connectin parts, So, heat generation and oxidation growth is considered to have a possibility to cause fire. In this Paper, we were carried out to study the oxidation growth and voltage waveform of connecting parts. In case of copper and copper connection, the growing of Cu2O elongated more than the other copper alloys. According to oxidation growth, the voltage waveform is distorted. And the contact voltage and the power dissipation increased rapidly.

• International Journal of Safety
• /
• 제8권2호
• /
• pp.9-14
• /
• 2009

This paper describes analysis of risk voltage for grounding electrode where earth leakage current is injected. To assess risk voltage of grounding electrode, the grounding simulator and CDEGS program were used to obtain measured data and theoretical results of this study. The grounding simulator was composed of a hemispherical water tank, AC power supply, a movable potentiometer, and test grounding electrodes. The shapes of grounding electrode model was ground rod. The potential rise was measured by grounding simulator, and the touch and step voltages were computed by CDEGS program. As a consequence, the potential rise of ground rod abruptly decreases with increasing the distance from the grounding electrode to the point to be tested. The touch voltage above the ground rod was low, but the step voltage was high. The measured results were compared with the computer calculated data and were known in good agreement.

• 유통과학연구
• /
• 제14권9호
• /
• pp.121-132
• /
• 2016

Purpose - This study has the following objectives. First, it seeks to build an integrated model that can analyze the path through which headquarters, subsidiary competence, and knowledge transfer performance influence subsidiary performance. Second, it analyzes the influence of the specificity of technology as a moderating effect factor on knowledge transfer process. Third, it will conduct an empirical analysis on distributive manufacturing MNEs and suggests an implication for companies that actually need technological localization. The difference of this study are as follows. First, unlike the existing studies, this study can expand a theoretical discussion as it uses subsidiary performance as the dependent variable. Second, it sets the specificity of technology as a moderating effect factor, not an antecedent, and can draw a theoretical implication. Research design, data, and methodology - This study built a path analysis model to identify the influence of the disseminative capacity and absorptive capacity of distributive manufacturing MNEs on subsidiary performance. Based on the previous studies, it set 19 items as 5 latent variables, and established 6 hypotheses by including the moderating effect of the specificity of technology between them. The final 203 companies were selected as analysis samples through a survey questionnaire. For empirical analysis, the study used PLS (Partial Least Square) that is based on structural equation model. Results - The empirical analysis result demonstrated that both headquarters' disseminative capability and subsidiaries absorptive capacity had a positive influence on knowledge transfer performance. Knowledge transfer performance also had a positive influence on subsidiary performance. In the analysis of moderating effect, the specificity of technology acted as a significant moderating variable only between knowledge transfer performance and subsidiary performance; it did not show a statistically significant moderating effect among disseminative capability, absorptive capacity, and knowledge transfer performance. Conclusions - The empirical analysis results of this study demonstrate the importance of disseminative capability and absorptive capacity in knowledge transfer to subsidiaries from the distributive manufacturing MNEs in Korea. The analysis on the moderating effect indicates that the specificity of technology in Korean companies influences on the process of making achievement by using the transferred knowledge.

• Journal of Korea Trade
• /
• 제25권4호
• /
• pp.108-127
• /
• 2021

Purpose - On the basis of knowledge transfer theory, we empirically explored how three types of human resource (HR) innovation knowledge exchange within a Chaebol drive the global subsidiary performance of the headquarters (HQ) of a Chaebol's globally affiliated companies. Design/methodology - Using a sample of 176 Korean HQ firms of the top 53 Chaebols and 1,061 of their foreign manufacturing subsidiaries (n = 1,061), we tested the relationship between the exchange of explorative and exploitative sustainable HR innovation knowledge among HQ firms of Chaebols, their subsequent transfer of technical HR knowledge via technical schemas, and the subsequent impact on the global subsidiary performance. Findings - The Chaebols' decisions about the three strategic knowledge management options (i.e., the degree of exchange of explorative and exploitative technological HR innovation knowledge and the extent of HQ-subsidiary HR knowledge transfer) have highly significant relationships with the global subsidiary performance. The results help explains the conditions under which the explorative versus exchange of exploitative sustainable HR innovation knowledge pays off by showing the moderating role of the degree of HQ-to-subsidiary technical HR knowledge transfer, at least in the case of the Chaebol as one representative type of the emerging-market business groups. Originality/value - As the first of its kind in the field of sustainable HR innovation knowledge management at the business group level, the present study makes a clear contribution in demonstrating how the performance of Chaebols' manufacturing subsidiaries depends greatly on their strategy for management of knowledge, as reflected in the choices they make about sharing both explorative and exploitative sustainable HR innovation knowledge among HQ firms and the subsequent transfer of HQ's sustainable HR innovation knowledge to the foreign subsidiaries.

• 한국산학기술학회논문지
• /
• 제15권12호
• /
• pp.7385-7392
• /
• 2014

본 연구는 도로분야의 표준 정보모델 구축을 목표로 하고 있으며 도로 부대시설을 대상으로 IFC 스키마를 확장 개발하였다. 국내 도로설계 관련 문헌 분석을 통해 도로 부대시설을 구성하는 요소를 도출하였으며, 이를 통해 IFC스키마의 엔티티, 타입, 프로퍼티를 정의하여 스키마를 확장 개발하였다. 또한 새로운 스키마를 수용하는 컨버터와 뷰어를 개발하여 부대시설 BIM 모델을 IFC모델로 변환하여 연구결과를 검증하였다. 개발된 스키마를 통해 변환된 표준 모델을 활용할 경우 도로분야 BIM 발주시 표준화 된 모델 기반의 납품 및 검증이 이루어질 수 있으며, 설계단계 뿐만 아니라 시공, 유지관리 단계까지 IFC를 활용하는 토목분야 개방형 BIM 체계를 구축할 수 있을 것이다.