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천상득,안창현,최갑식 대한구강악안면방사선학회 2005 Imaging Science in Dentistry Vol.35 No.1
Purpose : To acquire the useful diagnostic information through the analysis of the clinical and radiological characteristics of mandibular odontogenic keratocyst. Materials and Methods : The researchers compared and analysed the clinical and radiological features of 112 cases of mandibular odontogenic keratocyst confirmed by histopathlogic examination. Results : Mandibular odontogenic keratocysts occurred more frequently in males than in females and the incidence is the highest in the 2nd and 3rd decades. These cysts occurred in the mandibular posterior area, angle-ramus area and anterior area 51.8%, 31.2% and 17.0% respectively. These cysts had undulating border (69.6%) rather than smooth border (30.4%). Most of these cysts had well-defined hyperostotic border (94.6%). These cysts caused cortical thinning or expansion (78.6%) rather than no cortical reaction (21.4%). Loss of lamina dura was observed in 72.3%, displacement of tooth appeared in 35.7% and root resorption appeared in 12.5% of cases. In 71% of cases, displacement of mandibular canal was observed. Internal patterns of lesional radiolucency were even (61.6%) or uneven (38.4%). Conclusion : These results would be helpful in diagnosing of mandibular odontogenic keratocyst.
金聲得 울산대학교 1985 연구논문집 Vol.16 No.2
Winkler 地盤이나 等方彈性 半無限體上의 板解析에 있어서 地盤要素의 影響領域과 影響係數를 數直的으로 計算하는 새로운 技法을 다루었고, 또 電算프로그램 NMAT를 開發하여서 많은 例題에 對해 檢討하였다. 本 프로그램에 對해서 半無限體上의 版의 解析은 地盤反力係數 k가 ??인 Winker地盤上의 問題로 代置될 수 있다. In the analysis of plates resting on Winkler's type springs or an isotropic elastic half space, a new technique is introduced to calculate the numerical values of influence area & influence factor for the soil element, and a computer program NMAT has been developed and checked through various cases. My investigation of plates resting on an half space gives the following expression for the modulus of subgrade reaction. ??
金漢星,任漢錫,韓得永 건국대학교 부설 산업기술연구소 1982 논문집 Vol.7 No.-
This paper suggests a new model of piezoelectric transformer fabricated with steel plates, piezoelectric ceramics, electrodes and thin insulators. And the transformation ratio and the phase difference of several kinds of those transformers were discussed. As a result, the transformation ratio can be increased by series connection of the output ceramic elements or parallel connection of the point ceramic elements. Phase difference between the input voltage and the output voltage was occurred by 90˚ when the transformer had the maximum transformation ratio. These characteristics seem to be applied to develop the high frequency power transformers.
金聲得,李淙錫 울산대학교 1983 연구논문집 Vol.14 No.1
不海定 構造物에 어떤 外力이 作用하면 그 構造物內의 應力은 地盤의 變形의 影響을 받으며, 한편 基礎의 應力分布는 地盤-基礎-構造物 사이의 相互影響을 考慮한 統一된 解析方法이 要求되어진다. 이 硏究는 여러 가지 構造物에 對한 地盤-基礎-構造物 間의 相互影響의 모델化에 關한 것을 보여주고 있다. The stresses in a statically indeterminte structure are influenced by the deformation of the foundation while the pressure distribution on the foundation is affected by the relative stiffnesses of the structure and the foundation medium. To allow for this soil-foundation-structure interation a unified method of analysis is required. This investigation represents a model study of soil-foundation-structure interation in various structures.
척추 전방 전위증 환자의 자기공명 영상 소견에서 보이는 추체종판의 변화
안재성,이준규,황득수,이원석 충남대학교 의과대학 지역사회의학연구소 1997 충남의대잡지 Vol.24 No.2
We reviewed the 156 magnetic resonance of lumbar spine with spondylolisthesis in simple X-ray and analysed relationship of the type of spondylolisthesis with bone marrow change in lumbar MRI and low back pain, instability of lumbar spine and prognosis. The patients with no bone marrow change were excluded in our study. Bone marrow changes were classified into 3 types by Moddic methods. Type I is low signal in T1 image and high signal in T2 image, type Ⅱ is high signal in T1 image and isodense or slight increased signal in T2 and type 2Ⅲ is decreased signal in both T1 and T2 image. Displacement over 3㎜ in motion view is defined as instability. Pain was scored by JOA scoring system. 22(14.1%) of 156 patients had local bone marrow change of vertebral end-plate. Of 22 patients, levels of lesion were 28 levels. 14 levels were isthmic type, 6 levels were degenerative type and 8 levels were retrolisthesis, respectively. Isthmic type had type Ⅰ or Ⅲ In 8(57.1%) levels, instability in 7(50.0%) levels and significant pain(0 of 1 point) in 9(69.2%) patients. Degenerative or retrolisthesis had type Ⅱ in 10(71.4%) levels, instability in 1(7.1%) level and significant pain in 4(44.4%) patients. Unstable and more symptomatic type of spondylolisthesis was associated with type Ⅰ or Ⅲ change of bone marrow in MRIm and may be teated more aggressively. Type Ⅰ or Ⅲ of bone marrow change is associated with segmental instability and low back pain and has a poor prognosis, but type Ⅱ are present in more stable and chronic disease. We concluded that isthmic type was more associated with pain, instability and type Ⅰor Ⅲ change, while degenerative or retrolisthesis type were more stable and painful and associated with type Ⅱ change.
김득곤,형성은 용인대학교 조형연구소 2000 조형논총 Vol.5 No.-
Generally, human beings are already perceiving the environment through their own visual organ, the eye. This means the visual preference is very important in evaluating the standard of the city's environment. According to the environmental engineers, the visual preference is the crucial factor in determing the view of a city, and it also means the preference the beauty. This visual importance is acknowledged, though, Street Furniture is still giving unsatisfactory to the user, instrument, and environment must be research, analyzed and synthesized fully in various ways. Consequently, the propose of this research is focused on researching the Aesthetic operation which makes the beauty to settle the new theoretic that supports the environment of the city, and the substance of the target space. This will contribute to unify the whole environment by relating the interrelation of Street Furniture's features so that establishes the gross image.