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일 요양병원에 입원한 만성질환자들의 건강증진 프로그램 적용후 임상검사치 변화
임기동,이영선,박계남,류소연,김기순 조선대학교 2003 The Medical Journal of Chosun University Vol.28 No.1
Objectives and Method : To find the change of clinical laboratory value change of some chronic degenerative disease patients who were admitted to E sanatorium hospital in Y city from January 2001 to June 2002 after a health promotion program, a quasi-experimental study was done. Results : 1. The characteristics of study subjects showed 47.5% of male, 52.5% of female, 50% under 50 years in age Their common disease was cancer and cardiovascular disease, endocrine disease, liver disease followed in frequency. Before admission 74.2% smoked, 67.5% enjoyed drinking alcohol and 92.5% preferred to take meat 2. After health promotion program mean systolic blood pressure, diastolic blood pressure, serum total cholesterol, serum triglyceride, fasting blood sugar and serum total protein were decreased statistically significantly, compared to the value at the beginning of admission 3. By the group of patients characteristics like sex, age, smoking status, drinking status, meat intake preference and kind of diseases suffering from, mean systolic blood pressure, diastolic blood pressure, serum total cholesterol, serum triglyceride showed consistent decrease after health promotion program compared to the beginning of admission Mean levels of fasting blood sugar, serum total protein, white blood cell (WBC) counts, red blood cell (RBC) counts, GPT showed irregular change in some patients characteristics group Conclusion : Keen and consistent change was shown at blood pressure and lipid parameter after a health promotion program toward chronic degenerative disease patients. To confirm that the cause of change was due to life style change or accidental reason, further systematic studies are required.
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송기동,임인성 (사)한국컴퓨터그래픽스학회 2008 컴퓨터그래픽스학회논문지 Vol.14 No.4
To realistically produce fluids such as smoke for the visual effects in the films or animations, we need two main processes: a physics-based modeling of smoke and a rendering of smoke simulation data, based on light transport theory. In the computer graphics community, the physics-based fluids simulation is generally adopted for smoke modeling. Recently, the interest of the particle-based Lagrangian simulation methods is increasing due to the advantages at simulation time, instead of the grid-based Eulerian simulation methods which was widely used. As a result, because the smoke rendering technique depends heavily on the modeling method, the research for rendering of the particle-based smoke data still remains challenging while the research for rendering of the grid-based smoke data is actively in progress. This paper focuses on realistic rendering technique for the smoke particles produced by Lagrangian simulation method. This paper introduces a technique which is called particle map, that is the expansion and modification of photon mapping technique for the particle data. And then, this paper suggests the novel particle map technique and shows the differences and improvements, compared to previous work. In addition, this paper presents irradiance map technique which is the pre-calculation of the multiple scattering term in the volume rendering equation to enhance efficiency at rendering time. 연기와 같은 유체의 모습을 영화나 애니메이션에서의 특수 효과에 활용하기 위해는 연기를 사실적으로 모델링하는 과정과 모델링 된 연기 내부에서의 빛의 흐름이 잘 반영된 렌더링 과정이 필요하다. 컴퓨터 그래픽스 분야에서는 연기 모델링의 사실성을 살리기 위해 물리 기반의 유체 시뮬레이션 기법을 많이 차용하고 있는데, 그 동안 시뮬레이션 기법으로 주로 연구되어 온, 격자 기반의 Euler 방법과는 근본적으로 다른, 파티클 기반의 Lagrange 방법이 시뮬레이션 단계에서 얻을 수 있는 장점 때문에 최근 관심이 높아지고 있다. 연기 렌더링은 연기 모델링 방법에 종속적일 수밖에 없으므로, 결과적으로 격자 기반의 시뮬레이션 결과에 대한 렌더링 방법 은 많이 연구되고 있는 데 비해, 파티클 형태로 산출된 연기 데이터에 대하여 사실적인 영상을 생성해주는 렌더링 기술에 대한 연구는 아직 부족한 상황이다. 이에, 본 논문에서는 Lagrange 기법을 적용하여 생성한 파티클 집합 형태의 연기 시뮬레이션 데이터를 사실적으로 렌더링하기 위해, 전역 조영을 위한 최신 렌더링 기술인 포톤 매핑 기법을 파티클 데이터에 맞게 변형 및 확장한 파티클맵 기법을 소개하고, 개선된 파티클맵 기법을 제시하여, 기존 연구와의 차이점을 보여준다. 또한 렌더링 과정에서 효율성을 높이기 위해 볼륨 렌더링 방정식의 다중 산란 항을 미리 계산하는 광도맵이라는 방법을 제시한다.
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정인권,지경수,박기동,박헌국,임철수 한국생체재료학회 2003 생체재료학회지 Vol.7 No.2
Stent is a medical device, with a cylinder body, used to induce or maintain patency within a human lumen. Based on their materials, the stents are mainly divided into metallic and tube stents. The metallic stents can also be divided into several groups by certain standards: self-expandable and balloon-expandable stent by expanding method, wire construction and slotted tube stent by manufacturing method, covered and non-covered stent by the existence of cover material, vascular and non-vascular stent by indications for use. The performance of a metallic stent can be evaluated in the following areas: radial force, shortening, anti-migration, radiopacity, flexibility, returning force, introducer outer diameter and pushability of introducer and so on. An ideal stent should have good properties for above areas while providing a long term patency and being removable after the insertion.
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