• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.685-686
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• 2007

This paper presents an application of power system fault diagnostic algorithm for the PEFP Proton Accelerator Research Center using neural network. Proposed fault diagnostic system is constructed by the radial basis function (RBF) neural network because it has the capabilities of the pattern classification and function approximation of any nonlinear function. Proposed system identifies faulted section in the power system based on information about the operation of protection devices such as relays and circuit breakers. In this paper, parameters of the RBF neural networks are tuned by the GA-TS algorithm, which has the global optimal solution searching capabilities. To show the validity of the proposed method, proposed algorithm has been tested with a practical power system in Proton Accelerator Research Center of PEFP.

• 공업화학
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• 제32권6호
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• pp.695-699
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• 2021

본 연구에서는, 노후된 엔진을 사용하는 트럭 및 특수차량에서 배출되는 NO_x 및 PM을 동시에 제거하기 위해 SDPF 후처리 시스템 연구를 수행하였다. 우선, SDPF의 SCR 촉매를 선정하기 위해서, V/TiO₂와 Cu-zeolite 촉매의 de-NO_x 성능을 비교하였으며, SCR 촉매특성분석은 BET, XRD 및 NH₃-TPD를 통해 분석하였다. 촉매 활성시험 결과, Cu-zeolite 촉매가 가장 우수한 내열성을 보여주었다. 최적의 SDPF 코팅을 위해서, 목표로 설정된 입자 크기에 맞추어 슬러리를 제조하였다. SCR 코팅량에 따른 SDPF의 코팅안정성과 배압 결과, SDPF 촉매를 로딩량별로 A, B, C 샘플을 제작하여 코팅안정성과 배압 및 de-NOx 성능을 비교한 결과 B 샘플에서에서 가장 우수한 결과를 보였다. 최적 SDPF 후처리시스템에 대해 엔진동력계 시험을 실시하였으며, 시험결과 Eu-5 규제를 만족하였다.

• 산업진흥연구
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• 제5권3호
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• pp.81-88
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• 2020

본 연구는 기업의 지속가능성에 핵심요인으로 작용하고 있는 A사의 조직문화 활성화에 대한 사례연구를 통해 조직문화의 중요성을 강조하고자 한다. A사는 순수 한국형 네트워크 마케팅 기업으로서 필요한 제품을 더 좋은 품질과 더 합리적 가격으로 '고객을 넘어 고객의 성공을 실현하는 A사'라는 가치를 구현하면서 지속성장체계를 더욱 더 고도화하고 있다. 특히, A사는 창업이념, 사훈, 경영목표, 경영방침을 구현하기 위한 3대 조직문화 특성은 다음과 같다. 첫째, 원칙중심(Observing Principles)의 문화이다. 둘째, 동반성장(Glowing Together)의 문화이다. 셋째, 나눔의 문화(Sharing)구현이다. 또한, A사는 글로벌 한국형 네트워크마케팅 기업을 넘어 초일류기업으로 성장과 발전을 실현하기 위해 일에 대한 남다른 생각과 조직문화 특성인 A사 WAY를 정립하여 실천하고 있다. 한편, A사는 시대의 변화와 특성에 따른 업의 가치를 전략적으로 반영한 인적자원관리제도의 재정립과 실행의 고도화를 구현하고 있다. 즉, 조직문화 활성화를 위한 가장 중요한 요인으로 작용하고 있는 인사제도 변화란 측면에서 기존의 네트워크마케팅 기업들과 차별화된 전략적 인사제도와 함께 협력사와 회원 및 소비자들에게 지속적인 가치제공을 위한 제도 혁신을 통해 지속가능경영체계를 더욱 더 향상하고 있다.

• Nuclear Engineering and Technology
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• 제28권4호
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• pp.405-414
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• 1996

In this paper, the unsteady 2-dimensional turbulent flow model for thermal stratification in a pressurizer surge line of PWR plant is proposed to numerically investigate the heat transfer and flow characteristics. The turbulence model is adapted to the low Reynolds number K-$\varepsilon$ model (Davidson model). The dimensionless governing equations are solved by using the SIMPLE (Semi-Implicit Method for Pressure Linked Equations) algorithm. The results are compared with simulated experimental results of TEMR Test. The time-dependent temperature profiles in the fluid and pipe nil are shown with the thermal stratification occurring in the horizontal section of the pipe. The corresponding thermal stresses are also presented. The numerical result for thermal stratification by the outsurge during heatup operation of PWR shows that the maximum dimensionless temperature difference is about 0.83 between hot and cold sections of pipe well and the maximum thermal stress is calculated about 322MPa at the dimensionless time 28.5 under given conditions.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 춘계학술대회 및 창립 30주년 심포지엄(논문집)
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• pp.259-264
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• 2006

본 연구는 정기선해운영업을 중심으로 해운산업에서의 전자상거래 활용 및 성과에 영향을 미치는 요인들을 도출한 후, 도출된 영향요인들과 전자상거래 활용수준 및 성과간에 어떠한 인과관계가 있는지를 검증하고자 하였다. 이를 위해 우리나라 해운기업들의 내부환경변수인 해운기업특성과 외부환경변수인 해운환경특성이 전자상거래 활용수준에 어떠한 영향을 미치는지와 우리나라 해운기업들의 전자상거래 활용수준이 전자상거래 활용성과에 어떠한 영향을 미치는지의 2단계 연구모형을 구조방정식모델을 통해 실증분석하였다.

• 한국재료학회:학술대회논문집
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• 한국재료학회 1998년도 IUMRS-ICEM ABSTRACT BOOK
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• pp.88.3-88
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• 1998

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권6호
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• pp.1689-1705
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• 2023

To deal with the potential XSS vulnerabilities in the source code of the power communication network, an XSS vulnerability detection method combining the static analysis method with the dynamic testing method is proposed. The static analysis method aims to analyze the structure and content of the source code. We construct a set of feature expressions to match malignant content and set a "variable conversion" method to analyze the data flow of the code that implements interactive functions. The static analysis method explores the vulnerabilities existing in the source code structure and code content. Dynamic testing aims to simulate network attacks to reflect whether there are vulnerabilities in web pages. We construct many attack vectors and implemented the test in the Selenium tool. Due to the combination of the two analysis methods, XSS vulnerability discovery research could be conducted from two aspects: "white-box testing" and "black-box testing". Tests show that this method can effectively detect XSS vulnerabilities in the source code of the power communication network.

• 한국의류산업학회지
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• 제11권3호
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• pp.383-389
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• 2009

The purposes of this study were to investigate the level of technological collaboration and technological innovation, and to analyze the effects of these variables on performance of textile and clothing companies. The data were collected from participants of Preview in Daegu Exhibition and Seoul Fashion Sourcing Fair as well as a panel on the Research Institute. The results showed that the numbers of technological collaboration and technological innovation were relatively low but the level of technological collaboration was slightly high. The regression analyses indicated that technological collaboration had a significant effect but technological innovation didn't have a significant effect on company performance. However, these two variables had significant effects on innovation performance.

• 산업경영시스템학회지
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• 제42권4호
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• pp.76-83
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• 2019

The South Korean government is actively assisting the supply of the smart factory solutions to SMEs (Small & Medium-sized Enterprises) according to its manufacturing innovation 3.0 policy for the smart manufacturing as the 4th industrial revolution era unfolds. This study analyzed the impacts of the smart factory solutions, which have been supplied by the government, on the companies performances. The effects of the level of smart factory and the operation capabilities for the smart factory solutions on company performances, and the mediating effects of manufacturing capabilities have been analyzed using SPSS and AMOS. The data for this survey-based study were collected from the SMEs which implemented the smart factory solutions since 2015. The results show that the level of smart factory solutions adopted and operation capabilities for the smart factories do not have direct effects on the company performances, but their mediating effects on the manufacturing capabilities matter and the manufacturing capabilities effect directly on the company performances. In addition significant factors boosting the operation capability for the smart factory and the levels of the smart factory solutions are identified. Finally, the policy direction for enhancing the smart factory effects is presented, and the future research directions along with the limitations are suggested.

• 정보학연구
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• 제8권4호
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• pp.103-117
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• 2005

This paper examines the brand strategies of competitive product issuing C/O company in choongnam. Today, the global brand is very important range. The ubiquity of global brands has become one of the defining features of modern life and one of the core function of modern marketing. Therefore, company was conducted several interesting characteristics as follows: company employing brand marketing were found to engage in independent market research. Also, they tend to export products whose levels of quality are as competitive as to those of competing products from industrialized countries. Thus, global consumers may react powerfully against the increasing ubiquity of global brands and their homogenized identities.