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송영진,이준하,Song, Young-Jin,Lee, Jun-Ha 한국반도체디스플레이기술학회 2010 반도체디스플레이기술학회지 Vol.9 No.1
We investigated a linear carbon nanotube motor serving as the key building block for nano-scale motion control by using molecular dynamics simulations. This linear nano-motor, is based on the electrostatically telescoping multi-walled carbon-nanotube with ultralow intershell sliding friction, is controlled by the gate potential with the capacitance feedback sensing. The resonant harmonic peaks are induced by the interference between the driving frequencies and its self-frequency. The temperature is very important factor to operate this nanomotor.
송영진,정종현,김도균,Young Jin Song,Jong Hyun Jung,Do Gyun Kim 대한안과학회 2014 대한안과학회지 Vol.55 No.12
Purpose: To investigate the relationship between the concentration of aqueous humor cytokines and the severity of diabetic retinopathy. Methods: Thirty-six subjects were included in the control, non-proliferative diabetic retinopathy (NPDR), and proliferative diabetic retinopathy (PDR) groups, each group has 12 patients. Aqueous levels of cytokines (interleukin (IL)-1α, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, vascular endothelial growth factor (VEGF), monocyte chemoattractant protein (MCP)-1, interferon (IFN)-γ, tumor necrosis factor (TNF)-α) were investigated according to the severity of diabetic retinopathy. Results: When the control group was compared with the PDR and NPDR groups, aqueous levels of IL-6 were significantly higher in PDR patients than in those of both the control and NPDR groups (<EM>p</EM> = 0.016 and p = 0.003, respectively). The aqueous levels of VEGF were significantly higher in the eyes of PDR patients than in those of the control group (<EM>p</EM> = 0.003). There were no statistically significant differences between the 3 groups with regard to other cytokines. Conclusions: Aqueous levels of IL-6 and VEGF were higher in the eyes of PDR patients than in those of healthy controls. J Korean Ophthalmol Soc 2014;55(12):1821-1827
송영진,정승일,권지원,Young Jin Song,Seung Il Jung,Ji Won Kwon 대한안과학회 2014 대한안과학회지 Vol.55 No.11
Purpose: To report a case of a patient who developed scleromalacia after cosmetic eye whitening conjunctivectomy and treated with scleral and conjunctival autograft. Case summary: A 42-year-old male patient who received cosmetic eye whitening conjunctivectomy in both eyes on the nasal side in 2008 developed scleromalacia in the left eye. Calcium deposits and deformed conjunctiva were removed from the left eye. Autogenous sclera and conjunctiva were obtained from the upper side of the left eye and autogenous graft was performed. Topical antibiotics, topical steroid, topical autologous serum, and antibiotic ointment were applied postoperatively. The patient was given oral steroid for 1 month after surgery. During the postoperative 6 months, the grafted autogenous sclera was well maintained and improved cosmetically. Conclusions: In cases of scleromalacia occurring after cosmetic eye whitening conjunctivectomy, autogenous sclera can be considered as a treatment filler. J Korean Ophthalmol Soc 2014;55(11):1706-1709
탄소나노튜브로 둘러싸인 나노와이어 구조의 오실레이터 응용
송영진,Song, Young-Jin 한국반도체디스플레이기술학회 2007 반도체디스플레이기술학회지 Vol.6 No.4
Carbon nanotube oscillators encapsulating copper nanowire were investigated by molecular dynamics simulations. The excess forces due to the carbon-carbon van der Waals interactions are higher than the excess force due to carbon-copper interactions. And the masses of copper atoms are higher than those of carbon atoms. So, the carbon atoms are easier accelerated than the copper atoms. When the encapsulated copper nanowire deforms the encapsulating nanotube, the frequency can not be estimated by the mass-frequency dependence in classical oscillation theory.
아리스토텔레스의 비극론에 나타난 감정의 "카타르시스(catharsis)" 의 다양한 의미
송영진 ( Young Jin Song ) 충남대학교 인문과학연구소 2011 인문학연구 Vol.38 No.4
전통적으로 아리스토텔레스의 시학(Poetica)에서 아리스토텔레스에서 카타르시스는 비극을 감상하는 사람의 감정에 나타나는 것으로서 감정의 승화를 통하여 인격을 합리적이고 완전하게 만드는 것으로 해석되어 왔다. 이러한 해석은 아리스토텔레스의 철학 체계에 맞추어볼 때 정당한 것이다. 그러나 아리스토텔레스의 감정의 카타르시스, 즉 ``감정의 정화``라는 개념은 애매하기 때문에, 더 나아가 감정의 정화로서의 카타르시스가 카타르시스의 주체와 대상의 측면에서 문제되는데, 이는 감정의 정화개념이 종교적인 것이기 때문이다. 이 때문에 그의 철학적 체계를 전제할 수 없는 시대와 환경에서 특히 현대에서는 여러 비평가들의 다양한 해석 때문에 여러 가지로 해석될 수 있다. 그래서 이 논문에서는 한편으로 설사의 의미를 지닌 카타르시스가 오르페우스 종교에서 황홀경(ecstacy)이었던 것을 플라톤의 심신이원론적인 지적 전통에서 죄에 관한 정화사상으로 변모된 것임을 아리스토텔레스가 감정의 정화사상으로 발전시킨 것이라고 해석하면서도, 다른 한편으로는 감정의 정화 개념이 근대 낭만주의자들에서 정열의 발산으로 해석됨을 밝힌다. 특히 권력에의 의지나 초인사상을 부르짖은 니체는 종교에 관계없이 예술, 특히 음악에서 비극적 인생을 정화할 수 있는 것으로서 감정의 정화가 해석되고 있으며, 현대에서는 H. 베르그송이 신비체험을 통한 감정의 환희에서 감정의 정화의 본래적인 의미를 찾고 있다. Traditionally, the catharsis of the emotion which was described as the effects of the tragedy on the appreciators in Aristotle`` Poetica, has been interpreted as making the appreciators personality reasonable and perfect through the elevation of the emotion. But this interpretation had many difficulties in the subject and object of the catharsis. This interpretation, though it was correct according to the Aristotle`s system of philosophy, became very ambiguous in our days on account of the various modern critics. So, this essay tries to show, on the one hand, the exact meaning of catharsis which Aristotle had to use as religious thing like ``ecstasy``, which was originated from the ancient Orphic religion, and on the other hand, how this word has been used in so various meanings in our days on account of various viewpoints. Originally the meaning of catharsis was diarrhea, which became abstracted philosophically as elimination of the passion of personality according to Plato`s dualism and Aristotle`s form-matter theory. In modern times, Romanticists, especially F. Nietzsche who insisted the passions of ``Strum und Drang`` as the essence of human being, tried to show the passion itself as catharsis of the tragic life. In such a context, F. Nietzsche interpreted the catharsis as the overcome of the tragic life of ``the will to power`` through the music. Now a days, the catharsis means the elevation and recreation of experience of the human condition of existential reality. But H. Bergson said that the revelation of ecstasy of the elan vital through the mystical experience of the Orphic religion was the original meaning of the catharsis of the emotion.
송영진(Song, Young-Jin),이준하(Lee Jun-Ha) 한국산학기술학회 2009 한국산학기술학회논문지 Vol.10 No.1
나노튜브를 기반으로 한 용량성 나노 가속도계에 대한 특성을 고전적인 분자동역학 시뮬레이션을 이용하여 연구하였다. 외부에서 공급된 힘을 이용하여 나노튜브의 위치를 제어할 수 있었고, 해당하는 위치에 의한 커패시턴스의 변화를 통하여 피드백 센싱을 할 수 있었다. 에너지 소모 측면을 고려하면, 나노 가속도계의 진동 특성은 초기 변위와는 무관하였으며, 이러한 측정 시스템은 진동하는 커패시턴스를 추적하여 가속도를 결정하고, 이것은 또한 공급된 힘과 용량성 힘, 반데르발스 힘, 결합력, 반발력과 같은 힘들이 균형을 이루는 위치를 결정할 수 있다. We investigated the characteristics of a capacitive nano-accelerometer based on carbon nanotube by means of classical molecular dynamics simulations. The position of the telescoping nanotube was controlled by the externally applied force and the feedback sensing was achieved from the capacitance change. Considering energy dissipation, the oscillation features of the nano-accelerometers were similar, regardless of their initial displacements. The capacitance variations, which were almost linearly proportional to the applied acceleration, were monitored within an error tolerance.