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선우환(Woo Hwan Sun),김해성(Hae Sung Kim) 한국유화학회 2001 한국응용과학기술학회지 Vol.18 No.2
N/A An acrylic resin was synthesized with several monomers, styrene(St), 2-hydroxyethyl methacrylate(2-HEMA), n-butyl acrylate, methyl methacrylate, and acetoacetoxyethl methacrylate(AAEM) to prepare a high-solid coatings. Then, a high-solid acryl/melamine coatings was prepared by curing the acrylic resin with a curing agent, hexamethoxymethylmelamine(HMMM). The curing behavior of the acrylic resin with HMMM was investigated by the Ozawa method using DSC. For AAEM/HMMM and 2-HEMA/HMMM curing reactions, activation energies were 33.01 and 27.12 ㎉/㏖ and frequency factors were 9.54×10exp(15) and 1.53×10exp(13) min^1, respectively. From the results, it was found out that 2-HEMA showed higher reactivity with the curing agent than AAEM.
선우환 ( Woo Hwan Sun ) 한국논리학회 2015 論理硏究 Vol.18 No.1
The most difficult problem for mathematical Platonism is the epistemological problem raised by Paul Benacerraf and Hartley Field. Recently, Mark Balaguer argued that his version of mathematical Platonism, Full Blooded Plantonism (FBP), can solve the epistemological problem. In this paper, I show that there are serious problems with Balaguer`s argument. First, I analyse Balaguer`s argument and reveal a formal defect in his argument. Then I raise an objection based on an analogical argument. Finally, I disarm some potential moves from Balaguer.
선우환(Sun-Woo Hwan) 한국철학회 2001 철학 Vol.66 No.-
이 논문에서 필자는 크게 다음의 두 가지를 논변한다. 첫째, 설명 이론의 중심적 과제는 올바른 설명의 조건을 규정하는 데에 있고 이는 설명 진술 ‘P이기 때문에 Q이다’의 진리 조건을 규정하는 것과 같다. 이 과제는 다른 부가적인 과제들, 즉, 적합한(appropriate) 설명의 조건을 찾는 과제나 그럼직한 (plausible) 설명의 조건을 찾는 과제와는 구별되어야 한다. 둘째, 새먼(W. Salmon)이나 반 프라센(B. Van Fraassen) 등이 제시한 확률적 설명 모형들이 (그리고 그 뿐만 아니라 그런 설명 모형 일반이) 제시하는 기준들은, 설명 진술들의 진리치를 판단하는 데에 유용한 인식적 지침으로서는 적합할 수도 있지만 설명 진술들의 진리 조건을 구성하지는 못한다. 후자의 논변을 위하여, 필자는 설명 진술들의 진리 조건 자체에 직접적으로 개입해서는 안될 화자의 배경 지식이 확률적 설명 모형에 제시되는 기준들에서는 긴밀한 방식으로 개입하지 않을 수 없음을 몇 가지 예들들 통해 논의한다. 논문의 말미에, 필자는 반사실 조건문적 설명 모형을 하나의 대안으로 제안한다.
존재 예화 규칙과 보편 조건문화 규칙 -김영정 교수의 연구를 출발점으로-
선우환 ( Sun Woo Hwan ) 한국논리학회 2011 論理硏究 Vol.14 No.2
The late professor Young-Jung Kim advanced a view that Existential Specification Rule (ES Rule) can be understood as a kind of polylemma. In arguing for this view, he also claimed that all propositions containing free variables are universal propositions. In this paper, I argue that his view on free variables incur numerous problems. Moreover, I introduce a new rule of inference called ``Universalized Conditionalization Rule`` (UC Rule), so that I can show that his insight about ES Rule can be substantialized without an appeal to his problematic view on free variables. Finally, I show that ES Rule can be directly derived from UC Rule.
선결문제 요구의 오류는 왜 오류인가?: 논증의 목적과 선결문제 요구의 오류 평가
선우환 ( Woo Hwan Sun ) 한국논리학회 2016 論理硏究 Vol.19 No.2
In order to explain why begging the question is a fallacy, some of the challenges must be met. First we need to understand what begging the question is in subtle ways. In addition, it is necessary to reflect on the nature and the purpose of arguments in order to explain why begging the question is a fallacy. In this paper, I first have a general proposal about the main purpose of arguments. Then I place my own multi-layered theory of begging the question proposed in a previous study in the context of the proposals in this paper for the main purpose of arguments. Moreover, I develop a more comprehensive theory of why begging the question is a fallacy. Finally, I examine and criticize the main previous theories of begging the question, such as Frank Jackson``s theory, Douglas Walton``s theory, David Sanford``s theory, John Biro``s theory.