• Title, Summary, Keyword: Descartes

### TOTAL ANGULAR DEFECT AND EULER'S THEOREM FOR POLYHEDRA

• Kim, Dong-Soo;Kim, Young-Ho
• The Pure and Applied Mathematics
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• v.19 no.1
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• pp.37-42
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• 2012
• We give an elementary proof of Descartes' theorem for polyhedra. Since Descartes' theorem is equivalent to Euler's theorem for polyhedra, this also gives an elementary proof of Euler's theorem.

### Problem-solving and Descartes' (문제해결과 데카르트의 <기하학>)

• Han, Kyeong-Hye
• Journal for History of Mathematics
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• v.21 no.2
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• pp.39-54
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• 2008
• This paper investigate Descartes' , which is significant in the history of mathematics, from standpoint of problem-solving. Descartes has clarified the general principle of problem-solving. What is more important, he has found his own new method to solve confronting problem. It is said that those great achievements have exercised profound influence over following generation. Accordingly this article analyze Descartes' work focusing his method.

### A Study on Possibility of Introducing Descartes' Theorem to Mathematically Gifted Students through Analogical Reasoning (영재교육에서 유추를 통한 데카르트 정리의 도입가능성 고찰)

• Choi, Nam-Kwang;Lew, Hee-Chan
• Journal of Educational Research in Mathematics
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• v.19 no.4
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• pp.479-491
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• 2009
• This paper researches the possibility of introducing Descartes' theorem to mathematically gifted students. Not only is Descartes' theorem logically equivalent to Euler's theorem but is hierarchically connected with Gauss-Bonnet theorem which is the core concept on differential geometry. It is possible to teach mathematically gifted students Descartes' theorem by generalizing mathematical property in solid geometry through analogical reasoning, that is, so in a polyhedrons the sum of the deficient angles is $720^\circ$ as in an polygon the sum of the exterior angles is $360^\circ$. This study introduces an alternative method of instruction that we enable mathematically gifted students to reinvent Descartes' theorem through analogical reasoning instead of deductive reasoning.

### The impact of Rene Descartes′s Mind-Body Theory on Medicin (데카르트의 심신론이 의학에 미친 영향)

• 반덕진
• Health Policy and Management
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• v.10 no.1
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• pp.31-56
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• 2000
• A purpose of this study is to study on Rene Descartes's mind-body theory in medical aspect. Though Rene Descartes was not so much a doctor as a philosopher, he had health and medical science at heart. When he came into the world in 1596, he was in poor health. Therefore, he suffered from his bad health. Descartes's ideas absolutely colored Western thought for three hundred years, especially, his mind-body theory, mechanistic life-view, and reductionism had important effect on medical study and science of public health. As a rule, we know that his mind-body theory was applicable to mind-body dualism, and his mind-body dualism was connected with biomedical model of medicine. But by this study, his mind-body theory was not only mind-body dualism but also mind-body monoism. And he asserted mind-body interaction too. In other words, he advocated mind-body dualism in scientific aspect, but he knew mind-body monoism from his experence. He confessed this fact to Princess Elizabeth of Bohemia, he wrote mind-body interaction in $\boxDr$Discours de la methode$\boxUl$, $\boxDr$Meditationes de prima philosophia$\boxUl$, and $\boxDr$Traite des passions de 1'ame$\boxUl$ etc. However, only mind-body dualism of his mind-body theories was written in our medical text book, morever mental realm was excluded from the persuit of learning Descartes advocated a mechanistic world-view and mechanistic life-view, he regarded human body as a machine part. And a paticent corresponds to a troubled machine, a doctor deserves a repairman. But this point of view made holistic understanding of man impossible. Descartes divide the whole into basic building blocks, we named the approach Reductionism. Reductionism led to ontological concept in medical science, bacteriology established 'specific cause-specific disease-specific therapy'. We examined medical influence of Descartes's thought, we need to draw out a philosophic basis of medical science and science of public health by a close study of his records.

### Erasure of Memory and Theory of Modern Architecture (이성주의의 기억말소와 비올레 르 ??의 근대건축이론)

• Kang, Tae-Woong
• Journal of architectural history
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• v.15 no.4
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• pp.23-36
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• 2006
• Since he was a leading figure in nineteenth century architecture, Viollet-le-Duc's architectural theory is crucial to the foundation of modern architecture. He has been called a Gothic Revivalist, a Structural Rationalist and a Positivist. The first title was perhaps due to his vigorous restoration of Gothic works such as $N\hat{o}tre$ Dame, but he did not adore the Gothic style just for itself. Rather, he hoped to deduce some principles from the style. So how did he manage this? In his book "Entretiens sur l'Architecture (Lectures on Architecture), published between 1864 and 1872, he mentions using Descartes' four rules for reaching architectural certainty in contrast with the chaotic situation during that modernising period. Furthermore Viollet-le-Duc's theory can be seen as a serious attempt to translates Descartes' philosophical rules into systems of architectural speculation. Descartes' four rules of doubt are anchored in mathematical propositions, and without mathematical distinctions, none of these rules are valid. In other word, mathematics for Viollet is the yardstick of judgement between distinctness and indistinctness. Many architectural problems arise from this view. In this paper, the validities of applying Descartes' method of doubt to architectural discourse will be discussed in order to address the question:-Did Viollet-le-Duc clearly grasp Cartesian method by which memory was erased from the world?

### 수학에서의 포스트모던 경향 -퍼지논리를 중심으로

• 박창균
• Journal for History of Mathematics
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• v.12 no.2
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• pp.135-141
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• 1999
• It can be said that postmodernism shows a tendency to be anti-Descartes in the sense that it criticizes modern rationality which has started from Descartes. This paper suggests the relationship between modernism and postmodernism and that between. traditional Mathematics and fuzzy logic in three aspects, and shows that fuzzy logic tends to be a postmodern science in Mathematics.

### A Study on Leibniz's Ideas about Analysis (라이프니츠의 분석법에 관한 고찰)

• Kim, Sung-Joon
• Journal for History of Mathematics
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• v.19 no.4
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• pp.81-96
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• 2006
• This paper aims to review Leibniz's analytic ideas in his philosophy, logics, and mathematics. History of analysis in mathematics ascend its origin to Greek period. Analysis was used to prove geometrical theorems since Pythagoras. Pappus took foundation in analysis more systematically. Descartes tried to find the value of analysis as a heuristics and found analytic geometry. And Descartes and Leibniz thought that analysis was played most important role in investigating studies and inventing new truths including mathematics. Among these discussions about analysis, this paper investigate Leibniz's analysis focusing to his ideas over the whole of his studies.

### The Ecological Paradigm in Architecture Comparative Study of Descartes and Ecological Paradigm and Their Influence in Architecture

• Joh, Hahn
• Architectural research
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• v.8 no.1
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• pp.85-92
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• 2006
• The goal of this research is to find a theoretical base of the ecological paradigm, and explore the architectural ramification of the paradigm. To understand the paradigm in a historical and philosophical context, the paradigm is comparatively analyzed with the contrasting, Descartes-Newtonian paradigm to reveal the influence of each respective paradigm in various fields of science, such as logic, physics, bio-medical sciences, psychology, social sciences, and architecture. The affect in architectural ream is studied to find out the patterns of how the two contrasting paradigms have been materialized since the era of modern architecture and later. At the end, this paper proposes the possible architectural application methods of ecological design process.

### Reconstruction of post-burn anterior neck contractures using a butterfly design free anterolateral thigh perforator flap

• Lellouch, Alexandre G.;Ng, Zhi Yang;Pozzo, Victor;Suffee, Tabrez;Lantieri, Laurent A.
• Archives of Plastic Surgery
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• v.47 no.2
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• pp.194-197
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• 2020
• Anterior neck burns represent a major reconstructive challenge due to severe sequalae including restriction in movement and poor aesthetic outcomes. Common treatment options include skin grafting with/without dermal matrices, and loco-regional and distant free flap transfers with/without prior tissue expansion. Such variation in technique is largely influenced by the extent of burn injury requiring resurfacing. In order to optimize like-for-like reconstruction of the anterior neck, use of wide, thin and long flaps such as the anterolateral thigh (ALT) perforator flap have been reported with promising results. Of note, some patients have a tendency towards severe scar contractures, which may be contributed by the greater extent of inflammation during wound healing. We report our experience at 4 years' followup after secondary reconstruction of severe, anterior neck burn contractures in two patients by harvesting the ALT flap with a butterfly design. This technique provides adequate wound resurfacing of the burned neck and surrounding areas, and provides good neck extensibility by addressing both anterior and lateral aspects of the scar defect simultaneously. Such a flap design reduces tension on wound edges and thus, the risk of contracture recurrence in what remains a particularly challenging type of burn reconstruction.

### Thinking about Descartes' rules when writing a paper

• Kim, Yong-Ha
• Archives of Plastic Surgery
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• v.45 no.5
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• pp.393-394
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• 2018