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이승재 ( Lee¸ Seungjae ) 한국스페인어문학회 2021 스페인어문학 Vol.- No.100
The purpose of this study is to analyse diverse functions and uses of Spanish article lo. Spanish is the only Romance language which has preserved an neutral and unchangeable article, which is called 'article lo'. Lo can nominalize the adjectives, which, in this way, acquire a meaning equal or similar to that of the neuters of Latin. The nominalization with lo gives abstract character to the adjectives in competition with abstract nouns, etymologically and semantically correlatives. This study is composed of four chapters, an introduction and a conclusion. The first chapter focuses on the difference between 'article lo'(lo esperado) and 'pronoun lo'(lo esperaba). And we examine a variety of uses of Spanish articles by dividing the second chapter into two sections: the comparison of the definite article with the indefinite one (el libro/un libro), and diverse characteristics of the article lo. The third part, the analysis of different functions and uses of the article lo, is divided, in its turn, into three sections: 'lo + adjective'(lo noble=la nobleza; lo bueno=las cosas buenas; en lo alto=en la parte alta), 'lo + relative clause'(toma lo que quieras), and 'lo + adjective/adverb + que'(todos saben lo simpatica que es tu hermana). The fourth chapter addresses impersonal expressions with a sense of topicalization(lo imporante es (que)=es importante (que) ), and idiomatic phrases, which are structured with lo(a lo lejos); and shows how the article lo is interpreted into other languages like English, French and Italian. This investigation on lo is believed to contribute to our understanding of its diverse functions and also to the solution of various communication problems.
Biomechanical Analysis of Dolgaechagi in Taekwondo
Lee, Sungcheol,Hwang, Inseong,Lee, Kitae,Kim, Seungjae 연세대학교 대학원 1991 延世論叢 Vol.27 No.1
본 연구의 목적은 고급기술을 갖은 태권도 선수들에 의해 수행된 성공적인 돌개차기 기술과 관련된 운동학적 요인을 밝히는데 있다. 6명의 태권도 국가 대표팀 선수들을 대상으로 하여 촬영한 후 동작의 3차원 운동학적 자료를 얻었다. 분석된 변인들을 각 구간의 시간, 무게중심 변위, 차는 동작의 범위, 어깨와 �의 회전각속도, 차는다리의 무릎관절의 각속도와 차는 다리 분절의 선형속도, 각속도 등이었다. 이들 값들은 돌개차기 기술이 현재까지 분석된바 없기 때문에 다른 값들과 비교할 수 없었다. 그러므로 본 연구에서 얻어진 결과들은 돌개차기 기술의 운동학적 특성에 대한 적절한 표준으로 사용될 수 있을 것이다.
Stable chimeras of non-locally coupled Kuramoto–Sakaguchi oscillators in a finite array
Lee Seungjae,Cho Young Sul 한국물리학회 2021 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.78 No.6
We consider chimera states of coupled identical phase oscillators where some oscillators are phase synchronized (have the same phase) while others are desynchronized. Chimera states of non-locally coupled Kuramoto–Sakaguchi oscillators in arrays of finite size are known to be chaotic transients; after a transient time, all the oscillators are phase synchronized, with the transient time increasing exponentially with the number of oscillators. In this work, we consider a small array of six non-locally coupled Kuramoto–Sakaguchi oscillators and modify the range of the phase lag parameter to destabilize their complete phase synchronization. Under these circumstances, we observe a chimera state spontaneously formed by the partition of oscillators into two independently synchronizable clusters of both stable and unstable synchronous states. In the chimera state, the trajectory of the phase differences of the desynchronized oscillators relative to the synchronous cluster is a stable periodic orbit, and as a result, the chimera state is a stable but not long-lived transient. We observe the chimera state with random initial conditions in a restricted range of the phase lag parameter and clarify why the state is observable in the restricted range using Floquet theory for periodic orbit stability.
Circumferential twisting during route B equal-channel angular pressing
Lee, Hak Hyeon,Kim, Wooyeol,Jung, Ki Chae,Seo, Seungjae,Lee, Jae Kun,Park, Hong Lae,Park, Kyung-Tae,Kim, Hyoung Seop Elsevier 2018 Journal of materials processing technology Vol.259 No.-
<P><B>Abstract</B></P> <P>Equal-channel angular pressing (ECAP) is a representative severe plastic deformation process to fabricate bulk nanostructured materials by repetitive passes. Typically, there are four basic processing routes for the repetitive passes: route B is the most beneficial for grain refinement and homogenization of microstructure. In this work, investigation on deformation during route B in ECAP was conducted using the finite element analysis. It was found that the route B could lead to the inhomogeneous equivalent strain along the longitudinal direction of the workpiece by an unusual phenomenon called “circumferential twisting”. The circumferential twisting is primarily attributed to the deformation inhomogeneity for the cross-section induced during the 1 st pass of ECAP. This phenomenon occurs remarkably for the large-scale ECAP process because the twisting angle per unit length is almost constant. In addition, the higher the strain hardening exponent of the material, the greater the sample twisting during ECAP by the corner gap effect.</P>
Lee, Seungjae,Jang, Changwon,Cho, Jaebum,Yeom, Jiwoon,Jeong, Jinsoo,Lee, Byoungho The Optical Society 2016 Applied optics Vol.55 No.3
<P>Holographic-optical-element (HOE)-based integral imaging display can be applied to augmented reality. However, a narrow viewing angle is a bottleneck for commercialization. Here, we propose a method to enhance the viewing angle of the integral imaging display using Bragg mismatched reconstruction of HOEs. The viewing angle of the integral imaging display can be enlarged with two probe waves, which form two different viewing zones. The effect of Bragg mismatched reconstruction is analyzed with simulation and experiment. In order to show feasibility of the proposed method, a display experiment is demonstrated. (C) 2015 Optical Society of America</P>
Old Korean Writing on Wooden Tablets and its Implications for Old Japanese Writing
( Lee Seungjae ) 서울대학교 규장각한국학연구원 2014 Seoul journal of Korean studies Vol.27 No.2
The texts inscribed on wooden tablets (mokgan 木簡) contain many examples of Korean hanja 漢字, unique characters developed and used in Korea. The fact that a few examples of these Korean hanja from Silla 新羅 resemble gugyeolja 口訣字 in shape enables us to hypothesize that gugyeolja attested in later periods might find their origins in these Korean hanja used on mokgan. In addition, some Korean hanja may also be observed in ancient Japanese texts, which supports the notion that Japanese writing practice was influenced by the notational conventions of the peninsula. In Japan, the origin of the use of both phonetic and semantic readings of Chinese characters can be traced to Baekje, and the use of what is now known as okuri-gana 送り假名 may be closely related to Silla’s conventions of hunju eumjong 訓主音從 and mareum cheomgi 末音添記. The historical change from an on-gana 音假名-based writing system to a kungana 訓假名-based practice in ancient Japan can be understood as the shift from following the notational conventions of Baekje to following those of Silla.