• 전기학회논문지
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• 제66권12호
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• pp.1821-1829
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• 2017

A point machine requires lots of time and attention in terms of maintenance, since it causes 40% of failures among the railway signaling devices. The senescence of the point machine critically matters to the overall turnout system. In this paper, we analyzed the aging characteristics of the point machine by using the switching current of the point machine. The analysis is done based on the switching current measurements of the point machines deployed in the Sehwa outdoor test site and the Korail Kyongbu line. It is expected that the analysis result can be utilized for real-time diagnosis in the aspect of the maintenance of the point machines and predicting abnormal operations.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 B
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• pp.800-802
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• 2004

When an accident is happen due to using a bad Wire Compressor, some public resentments are caused and It cause lawsuit for we. In case, we will undergo a colossal financial loss. in addition to, Guide to improve quality of operation by using the number of times of pressing and pressing pressure with cooperative private enterprise. And because of needs for Thermal, Electrical and Chemical factor analysis of connection point of sleeve, expect to try improving problems of wire presser whole our company. We expect that reduce fault and save cost by this process. Consequently, we will prevent power losing and black out due to line faults by expulsion of inferiority equipment and prevent heating and line fault. This is possible using Alarming and Auto Locking Wire Compressor that is improve on this study.

• Ocean and Polar Research
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• 제39권3호
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• pp.233-244
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• 2017

This study seeks to analyze the needs of biotechnology companies in relation to their entry into the marine biotechnology industry and to discuss the policy implications associated with empirical tasks based on issues raised from empirical results gathered from a survey data of 200 biotechnology companies in Korea. This study made a comparison between marine and non-marine biotechnology companies and analyzed non-marine biotechnology companies' needs related to their entry into the marine biotechnology companies by using Social Network Analysis (SNA). Empirical results indicate that 23.5% of biotechnology companies produce goods using marine bio-resources. Once the utility of marine bio-resources is established, 58.8% of non-marine biotechnology companies intend to enter the marine biotechnology industry. This study also shows that non-marine biotechnology companies need technical support, information sharing, and the acquisition of raw materials to enter the marine biotechnology industry. The findings in this study provide important pointers for the direction of policies and future research in the area of marine biotechnology industry.

• 한국의류산업학회지
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• 제11권3호
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• pp.445-452
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• 2009

This study aims to improve the fit of high school girls' uniforms. This study researched on the fit of the recent high school girls' uniforms and developed a sizing system that adequately reflects their body figures. The results are as follows. First, the research showed that over 50% of the highschool girls wore their blouses too tight, whereas over 60% of the girls wore skirts that were appropriately fitted. Second, to classify the high school girls' figures, factor analysis and cluster analysis were conducted. 5 factors were extracted for upper body and 3 factors for the lower body. The girls were then divided into 3 groups for the upper body and 4 groups for the lower body. Third, KS size intervals were used for frequency distribution of height and bust for the bodice, height and waist for the lower body. Sizing system of the uniform company and the frequency distribution of sizes were compared. As a result, sizing system of the uniform company and the frequency distribution slightly overlapped. Fourth, sizing system considering body type distribution and high frequency distribution section of sizes was suggested. As a result, for the upper body, when 6 sizes were suggested, 43.9% of the population was covered and when 11 sizes were suggested, 58.3% was covered. For the lower body, when 6 sizes were suggested, 32.2% was covered, and when 11 sizes were suggested 58.9% of the population was covered.

• 아태비즈니스연구
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• 제11권2호
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• pp.27-43
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• 2020

Purpose - This study explores the impact of the real estate industry on related industries for the perspective of Chinese steel companies. Design/methodology/approach - The impact of housing prices on the 41 listed steel companies' performance was analyzed by using the panel data model. We used two kinds of housing price indexes that are set in the panel data models to estimate the range of the real estate market, driving the performance growth of steel listed companies. Moreover, the net profit of steel companies is used as the dependent variable. To test the stability of the model, ROA used as a dependent variable for the robustness test. Also, to avoid the time trend of housing prices, this paper selects the growth rate of housing prices as the primary research variable. After Fisher-type testings, there is no unit root problem in both independent and dependent variables. Findings - The results indicated that the rise in the housing price has a positive influence on the steel company performance. When the housing price increases by 1%, the net profit of steel enterprises will increase by 5 to 20 million yuan. Research implications or Originality - In this paper, empirical data at the micro-level and panel model are used to quantify China's real estate industry's driving effect on the iron and steel industry, providing evidence from the microdata level. It helps us to understand further the status and role of China's real estate industry in the economic structure.

• 방사성폐기물학회지
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• 제19권1호
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• pp.29-38
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• 2021

The article summarises the status and competence of UJV Rez, a. s. (up to 2012, the Nuclear Research Institute Rez, Czech Republic) in the field of radioactive waste (RAW) management as a company managing of 95% of institutional radioactive wastes in Czech Republic. UJV Rez a. s. has been one of the Czech Republic's key research and engineering institutions in the field of nuclear energy production since 1955. The company processes and conditions prior to storage 95% of so-called institutional RAW and is the principal partner of the state with respect to the research support of the Czech deep geological repository development project. UJV Rez a. s. boasts its own accredited radiochemical analytical test laboratory, unique of its kind in the Czech Republic. Of equal importance is UJV Rez's active participation in a range of international organisations and associations and its involvement in wide range of international projects, and so as European projects. One of them is EU funded project PREDIS: Pre-disposal management of radioactive wastes, that has started at September 2020, focused on the field of low level radioactive waste (LLW) and intermediate level radioactive waste (ILW) pre-disposal.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2011년도 추계학술대회
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• pp.559-562
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• 2011

국가나 기업이 보유한 정보통신 기술을 국제 표준에 반영하기 위한 표준화 활동은 국가의 산업 발전은 물론 기업의 생존이 걸린 중요한 문제라고 할 수 있다. 또한, 선진국은 자국의 기술을 국제표준에 반영하기 위하여 치열한 경쟁을 하고 있으며, 특히 정보통신 시장을 주도할 핵심 원천기술을 개발하고 이를 표준에 반영하는 표준특허 확보에 총력을 기울이고 있다. 이러한 환경에서 우리나라가 21세기 지식정보사회에서 지식정보강국으로 도약하고, 세계 정보통신 시장에서 주도적인 위치를 확보하기 위해서는 정보통신시장을 주도할 핵심기술에 대한 국제 표준화를 추진하는 정보통신 표준화 전략 수립 및 체계적인 추진이 필요하다. 따라서 본 논문에서는 그동안 단편적인 접근에서 벗어나 기술개발 기획에서 세계시장 선점까지의 표준특허 확보를 위한 종합적인 전략 수립에 대한 체계적이고 종합적인 접근방법을 제시하여, 국내 개발기술의 국제 표준화를 촉진하고 표준화 활동의 초석을 마련하는 것을 목적으로 한다.

• 한국벤처창업학회:학술대회논문집
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• 한국벤처창업학회 2008년도 춘계학술대회
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• pp.179-208
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• 2008

본 연구는 산업별 국내 벤처기업의 경영성과와 R&D 투자와의 상관관계에 대해 실증분석하고, 이를 통해 벤처기업의 경영성과와 R&D 투자와의 관계에 대한 일반 가설 뿐만 아니라 산업별로 차이가 존재한다는 사실을 밝히고자 산업별 실증분석을 시도하였다. 이에 본 연구에서는 과학기술부의 "과학기술연구개발활동조사보고서"의 조사결과로 추출된 $2002{\sim}2006$년간의 패널데이터를 대상으로 8개 산업별 실증분석을 하였다. 산업분류는 패널 수의 제한 등으로 국가과학기술표준분류 체계(KSIC) 상 중분류(2-digit)까지로 제한하였다. 본 연구는 기존 연구에서의 연구개발활동 및 연구개발비 지출은 기업의 가치 내지는 생산성, 경영성과에 대체로 긍정적인 영향을 미치는 사실을 확인할 수 있었을 뿐만 아니라 기존 연구에서 부족했던 개별 산업별, 기업 규모별 차이 또한 증명하였다는 점에서 큰 특징이 있다. 더욱이 기존 연구에서는 볼 수 없었던 5년간의 일관성 있는 패널데이터를 분석에 이용하여, 지속적으로 연구개발활동과 경영활동이 이뤄지는 기업을 대상으로 연구를 수행함으로써 연구결과의 신뢰성을 높였다. 마지막으로 IMF 경제위기 이후 2002년부터 2006년까지 최근 데이터를 실증분석에 사용함으로써, IMF 이전의 선진국 추격형이 아닌 선진국 진입단계에 있는 현상의 문제점들을 실증분석을 통해 제시하였다는데 큰 특징이 있다. 주요 실증분석 결과는 다음과 같다. 첫째, 자본금과 노동자 규모는 전체기업과 벤처기업의 경영성과와 양(+)의 상관관계를 가지는 것으로 나타났으며, 이는 분석 대상 8개 산업 모두에 적용된다. 둘째, 기업의 설립년수는 특정 산업에 있어서는 전체기업과 벤처기업의 경영성과와 양(+) 또는 음(-)의 상관관계를 가지나, 전반적인 경향에 대해서는 판단하기 어렵다. 셋째, R&D 투자는 전반적으로 기업 경영성과에 긍정정인(+) 영향을 준다고 할 수 있다. 넷째, 연구원 수는 전체기업 또는 벤처기업의 경영성과에 한 방향으로 영향을 미치는 요인이라 할 수 없다. 다섯째, 연구개발 노하우의 축적 등을 통해 기업의 경영성과에 긍정적인 영향을 미칠 것으로 가정되었던 연구소의 설립년수 또한 기업 경영성과에 긍정적인 영향을 미칠 것으로 가정되었던 연구소의 설립년수 또한 기업 경영성과에 긍정적인 요인으로 작용한다는 것이 전반적인 사실이라고 논할 수 없다.

• Advances in Traditional Medicine
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• 제5권2호
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• pp.156-159
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• 2005

The protective effect of Naoxingtong (NXT) on rat cerebral microvascular endothelial cell (rCMEC) was investigated. rCMEC was injured in vitro by incubating for 4 hours at 100% NO in a hypoxia chamber. After treated with NXT-containing serum, the cellular viability rate (90.3%) was significantly elevated when compared with that of control group and the inhibitive rate of lactic dehydrogenase activity (9.2%) was far lower than the control group with dose-dependent effect. The results indicate that NXT can increase viability of rCMEC, and protect cell membrane from injury during hypoxia.

• Nuclear Engineering and Technology
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• 제28권3호
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• pp.280-289
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• 1996

The pressure drop of twelve fuel bundle string in the CANDU-6 fuel channel is equal to the sum of the eleven junction pressure losses, the bundle string entrance and exit pressure losses, the skin friction pressure loss, and other appendage pressure losses, where the junction loss is dependent on the bundle end faces and angular alignments of the junctions. The results of the single junction pressure drop tests in a short rig show that the most probable pressure drop of the eleven junctions was analytically equal to the eleven times of average pressure drop of all the possible single junction pressure drops, and also that the largest and smallest junction pressure drops across the eleven junctions probably occurred only with BA and BB type junctions, respectively, where A and B denote the bundle end sides with an end-plates on which a company monogram is stamped and unstamped, respectively.