http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
송현석,김진민 한국물리학회 2005 새물리 Vol.50 No.4
We study a restricted solid-on-solid model with a defect in the middle of the substrate. The defect site is selected with a probability P which is smaller than the selection probabilities of the other sites. A facetting transition is observed as a function of P. For P < Pc, the defect distorts the whole surface area, and the surface becomes a facet. For P > Pc, the strength of the defect is weak, so the height dierence correlation function shows a power-law behavior (no facetting). The transition happens at Pc 0:87.
송현석,김진민 한국물리학회 2003 새물리 Vol.47 No.4
We study a random deposition model for random walkers. In our model, the surface roughness, W (t,L), increases as t$^{3/4}$ at early time and keeps increasing as t$^{1/2}$ at later times t $\sim$ L$^z$, where L is the system size and z is the dynamic exponent. Even though W (t, L) is not saturated, it follows the Family-Vicsek scaling formula with a special scaling functional form. In our model, the roughness exponent is given by α $\simeq$ 3/2, the growth exponent by $\beta$ $\simeq$ 3/4, and the dynamic exponent by z $\simeq$ 2 are obtained in our model. 잡음이 멋대로 걷기로 주어지는 경우의 Random Deposition(RD) 모델을 연구하였다. 우리 모델은 표면 거칠기 $W(t,L)$가 초기에는 $t^{3/4}$으로 증가하다가 $t \sim L^{z}$ 이후에는 $t^{1/2}$으로 증가하는 형태를 보였다. 여기서 $L$은 계의 크기, $t$는 시간, $z$는 동역학 지수를 의미한다. $W(t,L)$가 $t\gg L^{z}$인 영역에서도 계속 증가하는 모델이어서 거칠기 지수가 정의되지 않을 것 같으나 $W(t,L)$가 Family-Vicsek의 축척 관계식을 따르고 있다. 다만, 축척 함수가 특이한 현상을 나타낸다. 우리 모델에서 거칠기 지수 $\alpha \approx 3/2$, 성장 지수 $\beta \approx 3/4$, 동역학 지수 $z \approx 2$를 얻었다. $W(t,L)$가 포화되지 않지만 거칠기 지수가 정의되었다.
Height-Difference Correlation Function of the Quenched Mullins-Herring Equation
송현석,Jin Min KIM 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.-
We consider a discrete surface growth model following the quenched Mullins-Herring (qMH) equation with an external driving force. At the critical force, Fc, the surface width W shows a scaling behavior W²(t,L) sim L2α f(t/Lz) with α 1.35 ~ and z ~ 1.60, where L and t are the system size and time, respectively. However, the height-difference correlation function G has an unusual scaling behavior G(r,t) ~ r2α' g(r/t1/z') with different anomalous exponents α' \approx 1.683$ and z' ~ 1.994. The correlation length ξ grows as t1/z' and becomes saturated with Lω, where ω is the window exponent satisfying ω = α / α ' = z / z' ~ 0.802. We consider a discrete surface growth model following the quenched Mullins-Herring (qMH) equation with an external driving force. At the critical force, Fc, the surface width W shows a scaling behavior W²(t,L) sim L2α f(t/Lz) with α 1.35 ~ and z ~ 1.60, where L and t are the system size and time, respectively. However, the height-difference correlation function G has an unusual scaling behavior G(r,t) ~ r2α' g(r/t1/z') with different anomalous exponents α' \approx 1.683$ and z' ~ 1.994. The correlation length ξ grows as t1/z' and becomes saturated with Lω, where ω is the window exponent satisfying ω = α / α ' = z / z' ~ 0.802.
Random Walk Deposition with relaxation
송현석,Jin Min Kim 한국물리학회 2004 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.44 No.32
We study a random walk deposition model with relaxation. In our model, the surface width W(t;L) increases as t in the early time and approaches L at a later time, where L is the system size. We obtain 2:16, i.e. larger than 1. The height correlation function G(r; t;L) has anomalous scaling behaviors with loc 0:88, which is the local roughness exponent. Since > 1 and loc < 1, our model has an intrinsic anomalous roughening behavior.
송현석 대한정형외과학회 2019 대한정형외과학회지 Vol.54 No.5
스포츠 활동과 연관된 견관절 통증을 호소하는 환자에 있어서 진단 및 치료 방법의 결정에 초음파 영상 장비가 사용된다. 특히 회전근 개 병변, 이두건 장두 병변 및 견봉 쇄골 관절 손상에 대한 진단에 초음파 영상 장비가 도움이 된다. 휴대용 초음파 영상 장비를 경기장에서 사용하면 견관절에 발생한 통증에 대해 즉각적으로 결정을 내릴 수 있다. Ultrasonography is used for making the diagnosis and treatment decisions for those patients who complain of shoulder pain related with sports activity. Ultrasonography is especially helpful for diagnosing issues with the rotator cuff, the long head of biceps tendon and the acromio-clavicular joint. The medical decisions about shoulder pain can be promptly made when portable ultrasonography is used in the field of sports.
한국사람의 앞가쪽넙다리유리피판술에서의 관통동맥과 피판줄기에 대한 국소 해부
송현석,박명철 대한성형외과학회 2008 Archives of Plastic Surgery Vol.35 No.1
Purpose: The anterolateral thigh flap has many advantages over other conventional free flaps. But the anterolateral thigh flap has yet to enter widespread use because perforating arteries exhibit a wide range of anatomic variations and are difficult to dissect when small. The aim of this study is to identify the vascular variability of perforating arteries and pedicle in the anterolateral thigh free flap.Methods: We studied 12 cadavers and dissected 23 thighs. An anterolateral thigh flap (12×12cm) was designed and centered at the midpoint of the line drawn from anterior superior iliac spine to the superolateral border of the patella. After we identifed the perforating arteries we dissected up to their origin from lateral circumflex femoral artery along descending branch of lateral circumflex femoral artery. We then investigated the number and the position of perforating arteries, length and diameter of vascular pedicle and pattern of lateral circumflex femoral arterial system. Results: On average 2.3±1.1 perforating arteries per thigh were identified. The musculocutaneous perforators were 63.1%. In those perforators five perforators were arose from transverse branch of lateral circumflex femoral artery and two were arose from rectus femoral artery. Most of the perforators were near the intermuscular septum between rectus femoris muscle and vastus lateralis muscle. The length and diameter of pedicle were 11.9±3.5cm and 3.1±0.8mm on average.Conclusion: This study will be helpful for the success in anterolateral thigh free flap.