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이성대,남미영,홍창배 한라대학교 2007 論文集 Vol.10 No.-
One of the central problem in the study of the coastal surface wave environment is predicting the transformation of waves as they propagate towards the shore. The transformation is mainly due to existence of obstacles such as breakwaters and vertical cylinders. In general, the types of wave transformation can be classified as follows; wave diffraction, reflection, transmission, scattering, radiation et al. This research deals with the wave transmission and dissipation problems for two dimensional regular waves and scrap-tire vertical breakwater. Using the unsteady mild slope equation, a numerical model has been developed to calculate the reflection and transmission of regular waves from a multiple-row scrap-tire breakwater and vertical cylinders. In addition hydraulic model experiments have been conducted with different values of properties between the piles and opening ratio (distances) between the rows of the breakwater. It is found that the transmission coefficients decrease with decreasing the opening ratio and increasing the rows of vertical cylinders. Comparison between hydralic and numerical experiments results shows resonable agreement.
하악골 후방이동시 중안면부 연조직의 변화양상에 대한 임상통계학적 연구
한대희,김수남,민승기,김태성,성헌모 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.3
Prediction of the soft tissue changes following hard tissue movement is very important from the esthetic view point for patients who have orthognathic surgery. There are many cephalometric analysis of facial bone and soft tissue on the lower lip and chin region but few soft tissue analysis on the midface after mandibular setback surgery. This study was performed to obtain whether the mandibular posterior movement has influence on the midface and the predictable ratio of post-operative measurement values of the soft tissue changes following mandibular setback surgery. Fifteen patients (8 males and 7 females) who had undergone mandibular setback surgery were selected and analyzed the soft tissue movement on the upper lip and the cheek region. Post-operative changes of the soft tissue measurements after mandibular surgery were examined on pre- and post-operative cephalo-metrics and the ratio of changes were analyzed after drawing the reference line on the face with the barium sulfate solution. The reference lines were perpendicular to the intercanthal line from infraorbital foramen and lateral canthus. The results obtained were as follows : 1.There were tendancy of anterior movement of soft tissue adjacent the nose after mandibular surgery 2.There were incerased tendancy of the amount of anterior movement from the nasal crease to the cheek region. 3.The amount of anterior movement of the soft tissue was larger below the palatal plane compared with above the palatal plane in the cheek region. 4.The upper lip length was increased and moved posterior direction after mandibular setback surgery 5.The lower lip was moved posterior direction by posterior movement of the mandibular structure 6.Soft tissue of the midface around the nose moved anterior direction after mandibular setback surgery but there was no correlation between the amount of mandibular setback and the amount of the soft tissue changes
하대환,정성태,남문희 慶尙大學校生産技術硏究所 1994 生産技術硏究所論文集 Vol.10 No.-
To analyze grid structures on elastic foundation there are several methods, finite difference method, finnite element method, so on. Most of finite element method technique applied structures on an elastic foundation consideres the reaction of the elastic foundation as the vertical reaction at each nodal point, thus that would not includes the reaction of the rotation of the structure on an elastic foundation. Here, the foundation stiffness matrix derived from vertural work theory in introduced to apply structures on an elastic foundation, specialy with linearly varying element.
남성화를 보이는 여성에서 발견된 난소의 Steroid Cell Tumor 1예
조인호,정대훈,박영미,서영진,손영실,정철회,강영미,정수전,김영남,이경복,성문수,김기태 인제대학교 2006 仁濟醫學 Vol.27 No.-
Steroid cell tumor is a rare ovarian sex cord-stromal tumor which accounts for 0.1% of all ovarian tumors. Until now, only 4 cases have been reported in domestic literatures. Steroid cell tumor often secrets testosterone and presents virilization in adult women or precocious puberty in children. Treatment is often performed by surgical removal, adjuvant chemotherapy and radiation, but completely accepted treatment was not existed. We experienced a case of steroid cell tumor, which was manifested by typical virilization in a 43-year old patient, who was previously performed hysterectomy and unilateral oophorectomy. So, we present with a brief review of the literatures.
이상덕,김종환,정남진,오대근,오성종 한국국제농업개발학회 2003 韓國國際農業開發學會誌 Vol.15 No.2
This work is dedicated to main directions of Agricultural science policy of Russia during the transition to the market economy. In this study, Russian R&D system, R&D expenditure and structure of research institutes were introduced. Especially, Studies on organizations such as RFBR : Russian Foundation for Basic Research, RFTD : Russian Fund for Technological Development, Russian Foundation for Promotion of Small Enterprises in S&T, FPP : Fund for presidential Programs, SRC : State Research Center, ISTC : International Science & Technology Center were carried out. Analysis of the problems of Agricultural Science sector of Russia shows the situation is very complicated. Despite all efforts of Government, the national institutes is still in crisis. It is clear today that without energetic and intelligent reforms, it would be impossible to implement resonable reorganization of Agricultural sector and have to strong and deserved science and technical sector in Russia.