• 논리연구
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• 제17권1호
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• pp.197-217
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• 2014

필자는 이전의 여러 논문들에서 이른바 '논란 없는 원리'가 귀납 추론에 토대한 직설법적 조건문과 관련하여 성립하지 않음을 주장했다. 왜냐하면 귀납추론에 토대한 직설법적 조건문 '$A{\rightarrow}_iC$'가 질료적 조건문 '$A{\supset}C$'를 논리적으로 함축함을 받아들이면, 'A'라는 가정 하에서 'C'를 단언적으로 주장하는 경우와 단지 'C'가 참일 개연성이 높음을 주장하는 경우를 구분할 수 없게 되는 부조리한 결과가 발생하기 때문이다. 그러나 양은석 교수는 그의 최근 논문 "논란 없는 원리와 귀납논증"에서 논란 없는 원리에 관한 필자의 주장이 성공적이지 않다고 비판한다. 이 논문에서 필자는 양 교수의 비판이 필자의 논점과 무관함을 주장한다.

• International Journal of Quality Innovation
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• 제2권1호
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• pp.20-29
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• 2001

In this paper, the same distribution principle is developed based on the studies with many years for short run processes. The quality control philosophy and background of the principle are introduced. Some implementing techniques for the principle are presented, and application cases both in industry and evaluation & decision-making areas are shown.

• Korean Journal of Mathematics
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• 제26권4호
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• pp.747-756
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• 2018

We study a maximum principle for a uniformly elliptic second order differential operator in nondivergence form. We allow a bounded positive zeroth order coefficient in a certain type of unbounded domains. The results extend a result by J. Busca in a sense of domains, and we present a simple proof based on local maximum principle by Gilbarg and Trudinger with iterations.

• 논리연구
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• 제16권1호
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• pp.87-115
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• 2013

필자는 최근 논문 "논란 없는 원리와 최원배 교수의 반론"에서 이른바 '논란 없는 원리'가 논란의 여지가 있다는 주장과 (연역추론으로서의) 전건 긍정식의 타당성이 양립함을 주장했다. 이러한 주장에 대해 최원배 교수는 그의 최근 논문 "논란 없는 원리와 전건 긍정식"에서 세 가지 비판을 제시한다. 첫째, 필자는 'A이면 (아마도) C이다. A이다. 따라서 C이다.' 형식의 추론이 전건 긍정식의 사례임을 부정하지만, 이와 같은 추론은 전건 긍정식의 사례로 간주될 수 있다. 둘째, 연역추론에 기반을 둔 직설법적 조건문과 귀납추론에 기반을 둔 직설법적 조건문을 구분해주는 문법상의 표식이 없기 때문에 이러한 조건문들을 전제로 하는 전건 긍정식들을 형식상 다른 종류의 추론들이라고 보기 어렵다. 셋째, 직설법적 조건문이 귀납추론에 의해 정당화되는 경우를 허용하면 논리개념이 지켜야 하는 조화의 원리를 어기게 된다. 이 논문에서 필자는 이 비판들이 모두 설득력이 없음을 주장한다.

• 한국수학교육학회지시리즈A:수학교육
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• 제55권2호
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• pp.193-208
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• 2016

This study analyzes the likelihood principle and elicits an educational implication. As a result of analysis, this study shows that Frequentist and Bayesian interpret the principle differently by assigning different role to that principle from each other. While frequentist regards the principle as 'the principle forming a basis for statistical inference using the likelihood ratio' through considering the likelihood as a direct tool for statistical inference, Bayesian looks upon the principle as 'the principle providing a basis for statistical inference using the posterior probability' by looking at the likelihood as a means for updating. Despite this distinction between two methods of statistical inference, two statistics schools get clues to compromise in a regard of using frequency prior probability. According to this result, this study suggests the statistics education that is a help to building of students' critical eye by their comparing inferences based on likelihood and posterior probability in the learning and teaching of updating process from frequency prior probability to posterior probability.

• International Journal of Advanced Culture Technology
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• 제8권1호
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• pp.157-164
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• 2020

The reinforcement of the token, which is based on the token economy currently applied in blockchain-based cryptography, plays a critical role in forming the cryptographic-related ecosystem. Therefore, in this paper, it was investigated the reinforcement principle of token supporting the Token economy for blockchain model. In order to create a healthy ecosystem based on the reinforcement system principle, it is necessary to find ways to secure scalability by seeking consensus between the participants and the market economy structure so that it can generate an influx of more participants than seeking to maximize profits of certain people. Desirable behavior is defined as an action required by ecosystem participants that have the property of making the token ecosystem sustainable, and to do so, each individual receives appropriate incentives (rewards) when taking this action, ultimately encouraging voluntary participation and action by all participants in the ecosystem to optimize the interests of both individuals and participants. The expected benefit of this study may contribute to the establishment of various business models based on the principle of the reinforcement system.

• 건축역사연구
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• 제28권3호
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• pp.7-18
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• 2019

This study analyzed "Bukgwol Dohyeong (Drawing Plans for the Northern Section of Gyeongbokgung Palace)", which is an important source material for the restoration of the palace, by applying Paltaekron, the geomantic principle of bearings, in order to clarify the building layout principle of Gyeongbokgung Palace. Gyeongbokgung Palace shows the typical geographical conditions that meet the principle of Baesan Imsu (mountain in the back and water in the front) which takes Baegaksan Mountain as the main mountain and the overall layout of the buildings that meet the principle of 'Jeonchak Hugwan (narrow in the front and broad toward inside)' by using the natural topography that meets the principle of 'Jeonjeo Hugo (low in the front and higher toward back).' It is estimated that this layout and arrangement must have been led by geomantic principle of bearings. The analysis of the building layout plan of Gyeongbokgung Palace in the late Joseon Dynasty Period suggests the application of two methods: one is to divide central area from Gwanghwamun Gate to Geoncheongung Hall into eight layers and the other is to apply the bearings of the Eight Trigrams based on the building that becomes the center. As a result, the gate, main hall, and kitchen of all major buildings where the royal family lived are located in the auspicious bearings according to the geomantic principle of bearings while the spaces where people other than the royal family such as those who served the royal family and the officials operated in the palace or the hall that enshrines the ancestors such as Taewonjeong Hall are located in the ominous bearings. Therefore, the buildings of Gyeongbokgung Palace are arranged based on the geomantic principle of bearings.

• 대한전기학회논문지
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• 제34권8호
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• pp.308-316
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• 1985

This paper proposes an analytic tool for long-term generation expansion planning based on the maximum principle. Many research works have been performed in the field of generation expansion planning. But few works can be found with the maxinmum principle. A recently published one worked by professor Young Moon Park et al. shows remarkable improvements in modeling and computation. But this modeling allows only thermal units. This paper has extended Professor Park's model so that the optimal pumped-storage operation is taken into account. So the ability for practical application is enhanced. In addition, the analytic supply-shortage cost function is included. The maximum principle is solved by gradient search due to its simplicity. Every iteration is treated as if mathematical programming such that all controls from the initial to the terminal time are manipulated within the same plane. Proposed methodology is tested in a real scale power system and the simulation results are compared with other available package. Capability of proposed method is fully demonstrated. It is expected that the proposed method can be served as a powerful analytic tool for long-term generation expansion planning.

• 대한기계학회논문집A
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• 제30권6호
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• pp.622-630
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• 2006

This paper is about the magnetic suspension stage based on the Switched Reluctance propulsion principle. Because the previous studies on contact-free stage adopted the Lorentz force for main force generation mechanism they have suffered from thermal problem deteriorating the precision. Thus, the magnetic suspension stage adopting SR principle which can achieve high force density is proposed. The main operating principle and structure for achieving high resolution and long travel range are represented. The magnetic force analysis of each actuator, providing back data for dynamic modeling and controller design are carried out. By conducting basic experiments, the feasibility of the proposed system is shown. In addition the problems which should be improved and their solutions are represented.

• Journal of Information Technology Applications and Management
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• 제19권4호
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• pp.153-169
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• 2012

In the rapidly changing field of Management Information Systems, the definition and educational programs must be continually reevaluated and revised. A study was conducted to find a way to which the modeling principle is applied for redefining the identity of Management Information Systems as an independent academic field and to develop a plausible MIS curriculum based on the modeling principle. Previous researches on the MIS frameworks, knowledge and technology requirements for IS professionals, and standard MIS curriculums were reviewed thoroughly. For this study, the Kantian cognitive model was adopted as a basis of modeling principle. The result shows that modeling ability has been the core competence of IS people in the field of MIS. The applicability of a modeling principle is also verified in establishing the identity of MIS and developing a normative MIS curriculum. For the MIS field to thrive as an independent academic field and research discipline, it is believed to be imperative for the discipline to have a unique educational goals distinguished from both other management areas, and sub-fields of computer science.