• Nuclear Engineering and Technology
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• 제56권9호
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• pp.3826-3834
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• 2024

The main purposes of start-up tests in nuclear power plants (NPPs) are to ensure safe and reliable operation, verify system functionality, comply with regulatory requirements, optimize performance, and establish a foundation for ongoing plant operation and maintenance. However, the start-up tests of NPPs also could be used as a main part of the nuclear code validation procedure for several reasons including: realistic simulation, comprehensive evaluation, detection of code limitations, validation of safety margins and confidence in code predictions. The main purpose of the current study is to define and assess the validation procedure based on actual start-up test data. In this regard, the developed RELAP5 model has been validated against the actual data of VVER-1000 plant during a dynamic start-up test. The results of this full-scale validation show a good agreement between the developed RELAP5 model results and actual plant data. Finally, by defining a step by step validation procedure, it has been recommended to use the start-up phase test data as a more robust validation process which allow for full-scale validation of the nuclear code by comparing its predictions with actual plant measurements and also other advantages which have been demonstrated in the current study.

• 동의생리병리학회지
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• 제21권3호
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• pp.583-590
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• 2007

The significance of Han medicine (韓醫學), the Korean traditional medicine, that has lasted throughout the past couple millenniums relies upon Han Philosophy distinguished by its uniqueness. In brief, the specificity of Han medicine is characterized by unity of spirit and body, part and whole. According to this theory, when curing a frozen shoulder, it is usually cured by acupuncturing the area around the part that aches, but also doing so on the area that is totally different from the aching part such as the opposite part of the body. In fact, this can be pursued only through aspects that enable one to realize the unity of part and whole, and a ground for this possibility bases upon the crux of Eastern Philosophy, I-ching(역), such as theory of Five Elements (음양오행) and Three Pillars(삼재). In Western set theory, the issues of Class(부류) and elements(요원), whole and part were independently discussed in the area of mereology, and the question of part and whole was encountered with aporia and paradox since Greek ancient philosophy. At the turn of this century, many philosophers endeavored to pursue academic inquiry to resolve this paradox, especially by Russell and Whitehead through ${\ll}$Principia Mathematica${\gg}$ at the beginning of this century. in the process, there came out a phrase 'Russell's Paradox'. Russell himself proposed a typological resolution as an answer to the inquiry. However, 'Russell's Paradox' still remains as an aporia even till present days. During medieval period, this inquiry was even considered as 'insolubia'. Throughout this paper, 1 attempt to provide an analytic aspect on 'Russell's Paradox' from an unique thinking method and perspective of Han medicine that embodies the concept of 'unity of part and whole'. To do so, 1 suggest a physiological model in the first place depicted by diagrams of Circle 원, Quadrangle 방, Triangle 각(CQT) that portray the logic of Hado or Hotu 하도 which is 'the pattern from the river Ho'. That is to suggest that CQT원방각 of Hado can De a logical foundation that explains the notions of spirit (정신,뇌), internal organs(장부), and meridian system which functions as a solution to the question of 'Russell's Paradox'. There are precedent academic works examining the issue from philosophical aspect such as Sangil Kim's ${\ulcorner}$Han medicine과 러셀역설 해의${\lrcorner}$ Han Medicine and Resolution of Russell's Paradox(2005), and this analysis will further attempt to critically examine such works from a perspective of Han medicine.

• 국제초고층학회논문집
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• 제1권1호
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• pp.37-51
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• 2012

New generation of tall and complex buildings systems are now introduced that are reflective of the latest development in materials, design, sustainability, construction, and IT technologies. While the complexity in design is being overcome by the availability and advances in structural analysis tools and readily advanced software, the design of these buildings are still reliant on minimum code requirements that yet to be validated in full scale. The involvement of the author in the design and construction planning of Burj Khalifa since its inception until its completion prompted the author to conceptually develop an extensive survey and real-time structural health monitoring program to validate all the fundamental assumptions mad for the design and construction planning of the tower. The Burj Khalifa Project is the tallest structure ever built by man; the tower is 828 meters tall and comprises of 162 floors above grade and 3 basement levels. Early integration of aerodynamic shaping and wind engineering played a major role in the architectural massing and design of this multi-use tower, where mitigating and taming the dynamic wind effects was one of the most important design criteria established at the onset of the project design. Understanding the structural and foundation system behaviors of the tower are the key fundamental drivers for the development and execution of a state-of-the-art survey and structural health monitoring (SHM) programs. Therefore, the focus of this paper is to discuss the execution of the survey and real-time structural health monitoring programs to confirm the structural behavioral response of the tower during construction stage and during its service life; the monitoring programs included 1) monitoring the tower's foundation system, 2) monitoring the foundation settlement, 3) measuring the strains of the tower vertical elements, 4) measuring the wall and column vertical shortening due to elastic, shrinkage and creep effects, 5) measuring the lateral displacement of the tower under its own gravity loads (including asymmetrical effects) resulting from immediate elastic and long term creep effects, 6) measuring the building lateral movements and dynamic characteristic in real time during construction, 7) measuring the building displacements, accelerations, dynamic characteristics, and structural behavior in real time under building permanent conditions, 8) and monitoring the Pinnacle dynamic behavior and fatigue characteristics. This extensive SHM program has resulted in extensive insight into the structural response of the tower, allowed control the construction process, allowed for the evaluation of the structural response in effective and immediate manner and it allowed for immediate correlation between the measured and the predicted behavior. The survey and SHM programs developed for Burj Khalifa will with no doubt pioneer the use of new survey techniques and the execution of new SHM program concepts as part of the fundamental design of building structures. Moreover, this survey and SHM programs will be benchmarked as a model for the development of future generation of SHM programs for all critical and essential facilities, however, but with much improved devices and technologies, which are now being considered by the author for another tall and complex building development, that is presently under construction.

• 식물병연구
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• 제22권1호
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• pp.32-37
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• 2016

본 연구에서는 RBSDV의 외피단백질 P10을 코드하는 S10을 E. coli에서 발현시켰다. RBSDV-miryang isolate (GenBank JX994211)로부터 추출한 게놈 dsRNA을 주형으로 S10의 특이적인 primer를 사용하여 P10의 N-말단영역(1-834 nt, 1-278 aa)을 RT-PCR에 의해 증폭하였다. 증폭된 RBSDV S10-N (1-834 nt)을 발현 벡터 pET32a(+)에 클로닝하여 E. coli BL21(DE3)에서 발현시킨 후 Ni-NTA affinity column으로 발현된 단백질을 정제하였다. 정제된 단백질을 면역 동물에 주사하여 항혈청을 제작하였다. 제작된 항혈청은 Western blot 및 ELISA 분석으로 RBSDV와의 특이성을 확인하였다. 본 연구에서 RBSDV 한국 isolate의 항혈청이 제작되었으며 금후 혈청학적 연구의 좋은 재료로 활용될 수 있을 것으로 기대한다.

• 한국환경과학회지
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• 제26권1호
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• pp.47-54
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• 2017

We analyzed the variation in occurrence time and intensity of attacks by the rice stem borer (Chilo suppressalis Walker) on several crops. This study aimed to understand how C. suppressalis damages crops and to utilize this basic data for the establishment of environment-friendly control methods like pheromone traps. This study surveyed the changes in occurrence patterns of C. suppressalis, biological characteristics of overwintering larvae, and the efficacy of different types of pheromone traps the years. We found similar occurrence patterns of C. suppressalis in different crops. In addition, occurrence time of the first generation was advanced. Overwintering larvae showed no difference in pupal period and weight compared to the non-overwintering ones. However, the larval period was reduced to 19.1 days in Miscanthus field, in contrast to that in the paddy fields. It was confirmed that larvae of C. suppressalis generally prefer the lower part of the stems of Miscanthus. Efficiency of the emergence trap was confirmed to be greater than that of the delta trap for capturing C. suppressalis adults. However, it is necessary to adjust the control period because of the advancement in occurring time of C. suppressalis in recent years. The larvae of C. suppressalis experience favorable environmental conditions for overwintering in Miscanthus fields. The major Miscanthus fields are generally located in the areas protected for sources of drinking water, owing to which spraying of chemical pesticides is very limited. The results of this study provide important inputs for the development of environment-friendly control methods.

• 한국지반공학회논문집
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• 제21권4호
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• pp.99-114
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• 2005

본 연구의 Part I에서는 포화 점성토지반 침하량의 합리적인 평가를 위한 새로운 개념의 응력경로법 적용방법을 제안하였으며, 이러한 새로운 개념의 실용화와 관련하여 포화 점성토지반의 침하관련 특성변형거동을 효율적으로 평가하고 활용하는 구체적인 방법을 개발하였다. 본 Part II에서는 이러한 선행 연구결과를 바탕으로 실제 침하량 평가에 활용가능한 수준의 침하량 평가절차를 개발하였으며, 다양한 예제에 대한 침하량 분석을 통해 그 적용성과 유용성을 확인하였다. 이와 더불어 개발된 평가방법과의 비교를 통해 기존 평가방법들의 한계 또한 명확히 제시하였다. 본 연구에서 개발된 침하량 평가절차는 그 뛰어나고 유연한 적용성으로 인해 향후 여러 관련 시공현장에서 매우 유용하게 활용될 수 있을 것이다. 대표적인 예로, 개발된 평가절차는 특정 구조물에 대해 허용침하량 기준을 만족하도록 다양한 설계대안을 검토하거나 또는 시공과정에서 발생하는 각종 설계변경이 침하량에 미치는 영향을 즉각적으로 평가할 필요가 있는 경우 등에 효과적으로 활용될 수 있으며, 특히 동일한 지반 상에 다양한 구조물이 들어서게 될 대규모 부지에 대한 사전 검토작업에 매우 유용하게 활용될 수 있을 것이다.

• 한국응급구조학회지
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• 제11권3호
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• pp.17-30
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• 2007

Accidents occur frequently and that the date of the emergency situation and the people a good quality of life to actively respond to the emergency scene in the line of business activities and given their lives silently. 1st EMT's is currently the most jobs in the ability to work within a hospital that can be verified by expanding employment opportunities than the rate of youth unemployment and a sharp alleviate part of the current emergency medical institution performing the duties within the contents of this communication in a Emergency patients reflected in the rates for schools that can be revitalized as part of the emergency medical system(part of the emergency medical workers) for the completion of the law concerning emergency care, if you want the current laws and enforcement rules are to be improving. Under the current provisions in law concerning emergency care, and enforceable rules on enforcement issues and identify practical issues for consideration and improvements to enumerate the reasons for the demotion, the following conclusions can be sure until they improve. In addition, the National Assembly recently passed a bill AED use, and enforceable rules to enforce party that can teach AED necessarily a grade, including 1st EMT's to protect people's lives and to actively deal with the emergency situation so that it can be. Resolving these issues in the country where the emergency medical system can create a foundation for the advancement of emergency patients can get a good length of life, opens.

• 한국항행학회논문지
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• 제15권6호
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• pp.1194-1211
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• 2011

본 논문의 주요 목적은 공항기관을 위하여 경쟁우위 확보와 탁월한 공항 달성을 위한 융합경영시스템 모델개발이다. 융합경영시스템 모델개발은 창의성경영과 경영품질의 시스템을 융합하여 개발하였다. 융합경영시스템 구조는 첫째, 토대부분은 최고경영자의 철학과 의도, 대학과 같은 기업, 핵심가치를 기반으로 한 창조적 기업문화로 구성하였다. 둘째, 본체부분의 프로세스는 6시그마, 시스템은 ISO9001을 적용하였다. 셋째, 상위부분의 전략 및 평가는 미국의 Malcolm Baldrige National Quality Award Model을 적용하였다. 또한, 시스템 연결은 창조경영, 융합과 커버전스, 신뢰 및 시너지효과 선으로 연결하였다. 마지막으로 융합경영시스템은 공항기관을 위하여 실현하기 위한 실용적 관점에서 연구 및 개발하였다.

• Nuclear Engineering and Technology
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• 제52권2호
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• pp.397-416
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• 2020

Investigations of the commercial aircraft impact effect on nuclear island infrastructures have been drawing extensive attention, and this paper aims to perform the safety assessment of Generation III nuclear power plant (NPP) buildings subjected to typical commercial aircrafts crash. At present Part II, based on the verified finite element (FE) models of aircrafts Airbus A320 and A380, as well as the NPP containment and auxiliary buildings in Part I of this paper, the whole collision process is reproduced numerically by adopting the coupled missile-target interaction approach with the finite element code LS-DYNA. The impact induced damage of NPP plant under four impact locations of containment (cylinder, air intake, conical roof and PCS water tank) and two impact locations of auxiliary buildings (exterior wall and roof of spent fuel pool room) are evaluated. Furthermore, by considering the inner structures in the containment and raft foundation of NPP, the structural vibration analyses are conducted under two impact locations (middle height of cylinder, main control room in the auxiliary buildings). It indicates that, within the discussed scenarios, NPP structures can withstand the impact of both two aircrafts, while the functionality of internal equipment on higher floors will be affected to some extent under impact induced vibrations, and A380 aircraft will cause more serious structural damage and vibrations than A320 aircraft. The present work can provide helpful references to assess the safety of the structures and inner equipment of NPP plant under commercial aircraft impact.

• 한국농공학회지
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• 제24권1호
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• pp.23-30
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• 1982

The aim of this report is to analyze the Occurring rate of damage at each region of head works and to clear its damaged mechanism, centering around the destroyed situations of head works along both Musim and Bochong Rivers suffered from the storm flood occurred on July 22, 1980. The results obtained from the investigation of 25 head works taken for samples are summarized as follows. 1. The occurring rate of damage at each region of head works showed the largest number of 100 percentage in the revetment and protected riverbed work respectively, in the order of the next largest number, 68 percentage in weir body, 56 percentage in apron and 36 percentage in bank. 2. The destructive damage of revetment influenced largely on sweeping bank away, and destructive sufferings of weir body and protected bed work affected on the destructi on of apron, otherwise the destructive sufferings of apron reversely also acted on the- destruction of weirbody and protected bed work. In other hand, partial damage of weir body at the side of revetment is largely influenced by destructive sweeping away of bank. 3. It was showed that the destructive phenomena of weir body occurred largely at the part of concentrated flow and also had a deep relation with scoring by concentrated flow around upstream foundation of weir. 4. The suffered region of revetment is the down stream part just near weir body and the degree of damage is more severe at the curved part of bank that center of flow is concentrated.