• Korean Educational Research Journal
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• v.40 no.2
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• pp.17-33
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• 2019

This study examines the fundamental ethics of practice that Dasan Jung Yak-yong(1762-1836) argued at the book, "Dàxuégōngyì大學公議, The Public debate of Great Learning", by investigating the relationship between main agents of education. "Dàxuégōngyì", the book that Dasan wrote when he was 53 years old at his exiled place, Gangjin. As the title suggested, Dàxuégōngyì, it could be recognized as the impartial view based on the critical perspective to Zhūxǐ(朱憙)'s opinion. Zhuxi focused on the importance of "Great Learning 大學" as a study of the Great people and argued that "Great Learning" is the study for all the people should learn. On the other hand, Dasan claimed that "Tàixuézhīdào太學之道" in "Great Learning" is the study for the prince, not for the normal people. And he also interpreted "Dàxué 大學" as the school for teaching prince. In addition, "Great Learning" suggested the three practical principles; to illustrate illustrious virtue; to renovate the people; and to rest in the highest excellence. However, Dasan argued different way and emphasized three ethics of practice; filial piety(孝), admiration(弟), mercy(慈) and regarded as illustrious virtue of "Great Learning." He denied the three principle of "Great Learning" that Zhuxi reorganized and suggested including renovating the people(新民), and provided that close to the people(親民) is one of the main principles of "Great Learning." According to Dasan, if the king practices these three ethics of practice including filial piety, admiration, and mercy, so that the people will practice these ethics voluntarily. In other words, he indicated that the practice of three ethics is not only for the prince in the loyal family, but also for principles to educate the people in the nation. Thus, three ethics by Dasan including filial piety, admiration, and mercy could be recognized as the symbol of humanity. In other words, Dasan's three ethics in "Great Learning" can be recognized as the practical principles including educational issues and educational interactions. If these three ethics can be referred as the symbol of humanity as mentioned above, the implicit educational interactions are specifically constructed within the basic assumptions. Therefore, it is possible to clarify the specific ethics of practice by the indicating specific subjects and objects in the educational interactions between these three ethics of practice. Also, it helps more clear comprehension about the "Dàxuégōngyì大學公議, The Public debate of Great Learning", by Dasan.

• Korean Chemical Engineering Research
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• v.43 no.2
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• pp.187-201
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• 2005

Bioprocessing technologies utilizing 'biorecognition' between a solid matrix and a protein is being widely experimented as a means to replacing the conventional, solution-based technology. Frequently the matrices are chromatographic resins with specific functional groups exposed outside. Since the reactions of and interactions with the proteins occur as they are attached to the solid matrix, this 'solid-phase' processing has distinct advantages over the solution-phase technology. Solid-phase refolding of inclusion body proteins uses ion exchange resins to adsorb denaturant-dissolved inclusion body. As the denaturant is slowly removed from the micromoiety around the protein, it is refolded into a native, three-dimensional structure. Once the refolding is complete, the folded protein can be eluted by a conventional elution technique such as the salt-gradient. This concept was successfully extended to 'EBA (expanded bed adsorption)-mediated refolding,' in which the denaturant-dissolved inclusion body in whole cell homogenate is adsorbed to a Streamline resin while cell debris and other impurity proteins are removed by the EBA action. The adsorbed protein follows the same refolding steps. This solid-phase refolding process shows the potential to improve the refolding yield, reduce the number of processing steps and the processing volume and time, and thus improve the overall process economics significantly. In this paper, the experimental results of the solid-phase refolding technology applied to several biopharmaceutical proteins of various types are presented.

• The Mathematical Education
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• v.60 no.4
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• pp.509-527
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• 2021

We investigated whether and how pre-service teachers took the realistic contexts seriously in the course of solving word problems; additionally, we investigated how pre-service teachers evaluated students' realistic and non-realistic answers to word problems. Many pre-service teachers, similar to students, solved some of the realistic problems unrealistically without taking the realistic contexts seriously. Besides, they evaluated students' non-realistic answers higher than the realistic answers. Whether the pre-service teachers could solve problems realistically or not, they did not appreciate students' realistic considerations for the reasons that those were not fitted to the intentions of the word problems, or those were evidence of the flaws of the problem. Furthermore, the analysis of premises implied in the pre-service teachers' evaluation comments showed the implicit didactic contracts about realistic word problem solving that they accepted and also anticipated students to follow. Our analysis of the pre-service teachers' conceptions of realistic word problems can help teacher educators design the teacher program to challenge and revise pre-service teachers' folk pedagogy.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2009.05a
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• pp.145-148
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• 2009

Combustion tests of a fuel-rich gas generator had been conducted using the assembly of a powerpack. A gas generator is prone to longitudinal modes of combustion instabilities in a powerpack due to the increase of a characteristic length. It has been observed that the orifice inserted at the exit of the gas generator suppresses a longitudinal combustion instability. The intensities of pressure fluctuations in the manifolds and the chamber increase quadratically with a chamber pressure. Pressure fluctuations in the fuel manifold reveal two-fold strength greater than those in the oxygen manifold and the chamber. Frequency analysis indicates nonlinear characteristics inherent in the pressure fluctuations in the fuel manifold.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.19 no.2
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• pp.99-105
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• 1983

In the Steering and Sailing Rules of International Regulations for Preventing Collicions at Sea, 1972, any relative distance between two vessels necessary for taking action to avoid collision in head-on situation is not referred. In this paper, the author analyzed the ship's collision avoiding actions from a viewpoint of ship motions and worked out mathematical formulas to calculate the relative distances necessary for collision avoiding actions. Figuring out the values of maneuvering indices through experiments of actual ships, the author applied these values to the calculationg formulas and calculated the minimum safe relative distances. On the assumption that two vessels same in size and condition are approaching each other in head-on situation, the minimum safe relative distance was calculated as 5.0 times, sufficient safe relative one as 10.0 times their own length.

• Journal of the Korean Geographical Society
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• v.44 no.1
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• pp.89-104
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• 2009

Nowadays, a region is mainly constructed by a variety of subjects intentionally. Therefore, it is needed to consider the concept of the region reflecting the standpoint of various related subjects pertinently to understand today's region. Subjectivities, differences, and power relations are representative elements which play important roles in the process of constructing the region. And the inclusive concept of these elements is the tenn of 'regional identity'. The regional identity is constructed through the process of institutionalization, and this process of building identity is the process of constructing the region. The local newspaper is a representative one of the various factors influencing the process of institutionalization and serves as an important clue in understanding the process of constructing the region in Korea. In this point of view, this study also analyzes the standpoint and influence of the various institutions operating in the process of constructing the region through the articles in Hong-Seong Times. According to this study, institutionalization process have proceeded very actively in Nae-po region. But it is likely that institutionalization process have not reached to the stage of constructing region.

• Proceedings of the CALSEC Conference
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• 1997.11a
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• pp.143-160
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• 1997

정보화 사회에서 개인의 프라이버시와 국가 차원의 보안의 균형있는 발전은 매우 중요한 과제이며, 1997년 3월 국제 경제개발 협력기구(OECD)는 암호기능을 적용하기 위한 정책인 ‘OECD 암호정책’을 수립하였으며, 이 지침의 특기할 점은 암호화된 데이터를 국가 등의 제 3자가 강제적으로 해독하는 것을 인정하였다는 것이다. 이러한 OECD 암호정책은 공공의 안전성 확보에 필요한 조치임과 동시에 개인 프라이버시 침해의 위험을 내포한 암호정책으로 세계를 상대로한 CALS/EC 산업에 이러한 기술이 표준화되어 적용될 가능성이 높기 때문에 향후 국내의 CALS/EC 보안 서비스 제공시 중요한 지침이 될 것이다. 본 논문에서는 CALS/EC 보안 서비스를 실현하기 위하여 연구 개발해야 할 보안 기술 중 암호문의 강제 해독 기술 및 인중 기술을 포함한 보안 프레임워크를 제안한다.

• Proceedings of the Korea Water Resources Association Conference
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• 2005.05b
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• pp.90-94
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• 2005

본 연구의 목적은 현 국내 홍수 예경보시스템에 사용되고 있는 저류함수모형의 매개변수 변화에 따른 유량해석의 불확실성을 평가하는데 있다. 적용 대상지점으로는 개진을 출구로 하는 낙동강 회천유역($747.5km^2$)이며 비교적 양호한 수문자료를 가지고 있는 단일 호우사상을 선정하였다. 불확실성 평가에 사용된 매개변수는 관측수문곡선을 비교적 정확하게 모의하는 경험적인 값을 기준으로 Monte Carlo 기법을 이용하여 각각의 매개변수(K, P, $T_{1},\;f_{l},\;R_{sa}$)에 대한 정규분포를 가지는 100개의 난수를 발생시켜 저류함수 모형으로 모의되는 유량 앙상블을 평가하였다. 최적화된 매개변수를 이용하여 유량해석을 실시한 결과, 각각의 매개변수가 유출해석에 미치는 영향을 파악할 수 있었으며, 그 중 저류상수 K와 포화누가우량 Rsa가 불확실성이 제일 큰 매개변수로 나타났고, 이들의 혼합 앙상블 유출결과도 매우 큰 불확실성을 내포하는 것으로 나타났다.

• Vending industry
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• v.10 no.2
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• pp.38-41
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• 2010

자판기 시장이 불황이라 난리이다. 자판기 시장의 발전을 주도했던 커피자판기 시장이 큰 침체의 늪을 벗어나지 못하자 시장 분위기가 말이 아닌 것이다. 이런 상황에서 자연 새로운 시장을 개척할만한 신규아이템에 대한 니즈가 커진다. 특히 커피를 비롯한 음료자판기 시장이 부진하다보니 일반 식품을 취급하는 자판기에 대한 관심이 높아지고 있다. 이 분야의 시장은 아직 개척이 제대로 진행되지 못한 미답의 시장이라 할 만큼 큰 가능성을 내포하고 있다. 이번에 새롭게 등장한 에그코리아(주)의 계란 즉석조리자동판매기도 이 범주에 속하는 아이템이다. 먹거리 자판기로서 높은 상품가치를 바탕으로 시장에 있어 새로운 돌풀을 노리고 있다. 사실 과거 에크코리아 제품과 비슷한 계란 반숙 완숙자판기가 없었던 것은 아니다. 하지만 에그코리아의 계란 즉석조리자판기는 같은 범주에 포함되길 거부한다. 만약 자판기가 사람이라면 이런 항변도 불사할 태세이다. "또 다시라 말하지마! 나는 달라도 한참 다르니까...".

• Journal of Welding and Joining
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• v.10 no.4
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• pp.39-43
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• 1992

용접은 자동차, 중공업, 조선, 건설, 항공 등 주요 기간산업의 기반기술로서, 금속가공분야 가운데 특히 접합부문에 특별한 의미를 내포하고 있다. 그러나 기반기술로서의 중요성도 불구하고 국 내산업전반에서의 용접은 비교적 낙후된 모습을 보이고 있는 것이 부인할 수 없는 실정이다. 용접이란, 금속가공의 일개공정을 의미하는 용어로 간단히 정의될 수 있지만 용접공정이 원만히, 성공적으로 수행되기 위한 준비되고 연구되어야 할 분야는 매우 복잡하고 다양한 양상을 띄고 있는데 우선, 모재와 용가재를 용해하기 위한 열원으로서는 전기에너지, 화학연소 에너지, LASER, 가속전자, PLASMA가 응용되고 있으며 그 에너지를 유효하게 용접에 이용하기 위한 주변장치로서는 TORCH, JIG, 각종 전자적 SENSOR각 활용되고 있다. 또한, 모재의 재질에 따른 용접재료와 소모성자재의 선택이 부수적으로 따르게 되어 각각의 분야에는 그 특성에 준 하는 학문적 이론이 광범위하게 적용되고 있다. 각종 구조물 제작이 용접의 최종적인 목적이라고 할 때, 제작에 따른 재료와 모재형상, 그리고 각종 기능적 요구에 부합하기 위한 열원, 재료, 용접방법, 검사방법등의 선택은 종합적인 학문적 이론과 실제적 응용이 뒷받침 돼야 함을 전제 로써, 본고에는 용접전반의 문제중, 전기용접기기 및 용접관련 자동화 설비의 현주소 파악과 문 제의 접근측면에서만 간단히 기술하고자 한다.