• 한국광학회:학술대회논문집
• /
• 한국광학회 2004년도 하계학술발표회
• /
• pp.216-217
• /
• 2004

• 한국자기학회:학술대회 개요집
• /
• 한국자기학회 2017년도 임시총회 및 하계학술연구발표회
• /
• pp.175-175
• /
• 2017

• 한국광학회지
• /
• 제29권2호
• /
• pp.64-69
• /
• 2018

본 논문에서는 양자시스템이 두 순수상태가 임의대로 혼합된 상태, 즉 2-계수 양자상태, 에 존재할 때 시스템이 포함하는 양자얽힘의 일반적인 하한값을 유도하고 양자얽힘검증 및 양자상태 분리가능성 판별 방법을 제안한다.

• 대한수학회논문집
• /
• 제39권1호
• /
• pp.223-245
• /
• 2024

We study RNA foldings and investigate their topology using a combination of knot theory and embedded rigid vertex graphs. Knot theory has been helpful in modeling biomolecules, but classical knots emphasize a biomolecule's entanglement while ignoring their intrachain interactions. We remedy this by using stuck knots and links, which provide a way to emphasize both their entanglement and intrachain interactions. We first give a generating set of the oriented stuck Reidemeister moves for oriented stuck links. We then introduce an algebraic structure to axiomatize the oriented stuck Reidemeister moves. Using this algebraic structure, we define a coloring counting invariant of stuck links and provide explicit computations of the invariant. Lastly, we compute the counting invariant for arc diagrams of RNA foldings through the use of stuck link diagrams.

• 한국광학회:학술대회논문집
• /
• 한국광학회 2009년도 동계학술발표회 논문집
• /
• pp.315-316
• /
• 2009

• Korea-Australia Rheology Journal
• /
• 제13권4호
• /
• pp.205-217
• /
• 2001

This review article summarizes results of recent viscoelastic and dielectric studies for entangled cis-polyisoprene (PI) chains. The PI chains have the so-called type-A dipoles parallel along the chain backbone, and their slow viscoelastic and dielectric relaxation processes reflect the same global chain motion. However, this motion is differently averaged in the viscoelastic and dielectric properties, the former representing the isochronal orientational anisotropy of individual entanglement segments while the latter detecting the orientational correlation of the segments at two separate times (0 and t). On the basis of this difference, the viscoelastic and dielectric data of the entangled PI chains were compared to elucidate detailed features of the chain dynamics. Specifically, the molecular picture of dynamic tube dilation (DTD) incorporated in recent models was tested for linear and star PI chain. The comparison revealed that the DTD picture was valid for linear PI chains but failed for the star PI chains in the dominant part of the terminal relaxation. The failure for the star chains was related to the pre-requisite for the DTD process, rapid equilibration of successive entanglement segments through their constraint release (CR) motion: For the star chains, the dilated tube diameter expected in the terminal regime was considerably large because of a broad distribution of motional modes of the chains, so that the CR-equilibration required for DTD could not occur in time. The terminal relaxation of the star chain appeared to occur through the CR process before the expected DTD process was completed. The situation was different for the linear chain exhibiting narrowly distributed motional modes. The dilated tube expected for the linear chain was rather thin and the required CR-equilibration occurred in time, resulting in the success of the DTD picture. These detailed features of the chain dynamics was revealed only when the viscoelastic and dielectric properties were compared, demonstrating the importance of this comparison.

• 한국유변학회:학술대회논문집
• /
• 한국유변학회 2001년도 Australian-Korean Rheology Conference 2001
• /
• pp.156.1-156
• /
• 2001

(No abstract, see full-text)

• 한국섬유공학회:학술대회논문집
• /
• 한국섬유공학회 1990년도 제2차 학술발표초록집
• /
• pp.56-56
• /
• 1990

• 대한지리학회지
• /
• 제40권5호
• /
• pp.553-570
• /
• 2005

계룡산에는 상이한 종교(또는 이념) 집단들이 다양한 의미와 가치를 부여하며 이용해 온 공간과 장소들이 있다. 불교와 유교 그리고 무속을 포함하는 민간 신앙들은 자기 고유의 영역과 정체성을 생산하고 관리하기 위하여 제각기 다른 이념(또는 세력)을 구현하여 왔다. 무속을 중심으로 하는 저항의 지리는 계룡산 전역에 걸쳐 불연속적인 영역을 기반으로 진행되어 왔다. 이러한 저항의 지리가 가장 뚜렷하게 확인되는 지점은 삼불봉, 암용추, 숫용추 등이다. 지금까지 무속과 불교의 공간적이고 시간적인 뒤엉킴을 통하여 피지배 세력인 무속이 생존하여 왔던 것이다.

• Fisheries and Aquatic Sciences
• /
• 제6권1호
• /
• pp.34-40
• /
• 2003

Three panel trammel nets were made illegal for the brown shrimp (Penaeus japonicus) or fishes by Korean fisheries law while trammel nets for fleshy prawn in the West sea remained legal. In this study a single panel tangle net with vertical loop lines rigged between the float line and sinker line was specially designed to catch brown shrimp. This net was developed for the first time after observation of the brown shrimp behaviour when reacting to a net in an observation tank. In field experiments these single tangle nets were compared with the traditional trammel nets in the coastal waters of the Keoje area. The mean number of the brown shrimp for 53 fishing operations was 1.13 per unit panel of the single tangle nets when fitted with the vertical loop lines. This was $84\%$ of the mean catch of 1.36 achieved with the trammel nets. These results of fishing experiments using single tangle nets in the field revealed a high fishing efficiency for the brown shrimp and showed little difference from trammel nets. The size of the brown shrimp or number of by-catch was not different between single tangle nets and trammel nets.