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전기장에 놓인 네마틱 액정 방울의 CARS 현미경 관찰
박진순,김종현,이은성,박주현,Satoshi Kawata 한국물리학회 2013 새물리 Vol.63 No.4
We stereoscopically observed the response of liquid crystal droplets in an electric filed by using a coherent anti-stokes Raman scattering microscope and polarizing optical microscope. In silicon oil, a nematic liquid crystal can exist as droplets. The directors orient radially and induce a point defect in the center. When an electric field is applied, the directors tend to align along the field's directions, and the point defect changes into a line disclination. Even more, the shape of the spherical droplets changes oval with increasing field strength in the low-frequency range. The movement of the ions in a liquid crystal seems to induce a shape change. Coherent anti-stokes Raman scattering (CARS) 현미경과편광광학현미경을 이용하여 액정 방울이 전기장에서 나타내는 액정의배향 구조와 변화 과정을 입체적으로 관찰하고 이해하였다.실리콘오일에서 네마틱 액정은 마이크로미터 크기의 방울로 존재할 수 있다. 액정 방울을 이루는 방향자는 계면에서 면에 수직하게 늘어선다. 그리고중심에 점결함을 형성한다. 전기장을 인가하면방향자는 전기장 방향으로돌아가려한다. 전기장이 증가함에 따라 방울 가운데 있던 점결함이방울과 오일의 경계 부분으로 이동하는 것처럼 보이고 선결함인디스클리네이션으로 변화한다. 전기장의 주파수가 낮으면 방향자 뿐만아니라 액정 방울의 모양이 변화한다. 전기장 방향으로 길이가 늘어난다. 주파수가 낮을수록 그 변화폭이 크다. 액정 내에 포함되어 있는 이온에의한 영향이라고 생각된다.
박진순,고철환 한국해양과학기술원 2012 Ocean science journal Vol.47 No.2
A study was performed to better understand the taxonomy and diversity of the diatom genus Amphora (Bacillariophyceae) from Korean coastal environments. Samples were taken from six locations at Saemangeum tidal flats on the west coast of Korea. Light microscopic (LM) and scanning electron microscopic (SEM) observations revealed a total of 23 Amphora species. Thirteen were identified to the species level, and ten to the genus level. Three Amphora species viz. A. arenicola, A. beaufortiana and A. maletractata var. constricta were recorded for the first time in Korea. All the Amphora species were listed and presented with morphological descriptions, dimensional information and photographic information.
박진순 한국금융법학회 2011 金融法硏究 Vol.8 No.1
The value of Korean Won against U.S. Dollars had been increasing stably in a consistent manner until the end of 2007. The value of Korean Won, however, started to plummet suddenly in 2008 as the global financial crisis occurred as a result of the sub-prime mortgage problem in the U.S. and other factors. Such dramatic change in the value of Korean Won triggered a sharp rise in disputes involving over-the-counter derivatives products. The KIKO litigation is a major example of such disputes. Disputes involving KIKO products began in 2008 as the Fair Trade Commission conducted its regulatory review of the contracts used for KIKO transactions. Subsequently, the disputes went through a dispute mediation process at the Financial Services Commission and even prompted the Financial Supervisory Service to audit the banks that had sold the KIKO products. The KIKO controversy was also the subject of inspection by the National Assembly during its annual audit of the executive branch of the government. Civil lawsuits, including preliminary injunction and main civil claim cases, began to appear in late 2008. After two years of intensive review, courts have ruled on 200 or so civil cases at trial level. The trial rulings covered unprecedented in-depth analyses of issues relevant to derivatives products and financial engineering. This paper summarizes the judicial view of main issues of the KIKO litigation as reflected in the trial rulings and discusses its implication. Specifically, this paper focuses on the following main issues of the trial rulings: (1) whether KIKO products are structurally fair (Chapter II); (2) whether KIKO products are suitable for foreign exchange hedging (Chapter III); (3) what zero cost means (Chapter IV); (4) whether the amount of margins earned by banks under KIKO contracts is appropriate (Chapter V); (5) whether it is permissible to terminate KIKO contracts based on the change-in-circumstances theory (Chapter VI); and (6) whether KIKO contracts constitute "standard terms and conditions" (Chapter VII). It is understood that the courts have made correct decisions in the KIKO civil lawsuits by poignantly recognizing problems with numerous arguments made by plaintiff companies which are inconsistent with basic principles underpinning the financial market, derivatives products and hedging systems. The fundamental cause of the KIKO controversy was the abrupt rise in the foreign exchange rate, which no one had foreseen or could control. Thus, it is undesirable to transfer the consequence of or responsibility for the rise in the foreign exchange rate to banks through litigation. The challenge being faced should be resolved through providing credit support to small to medium-sized companies as a matter of national concern or mitigating negative side effects of the government goal of maintaining a high foreign exchange rate for Korean Won from a financial or industrial policy perspective.