건강보험과 의료급여 환자간의 정신요법 진료량 차이 비교 - 정신병원 입원환자를 대상으로 -

이대희,박은철,남정모,이상규,이동한,유승흠,Lee, Dae-Hee,Park, Eun-Cheol,Nam, Chung-Mo,Lee, Sang-Gyu,Lee, Dong-Han,Yu, Seung-Hum 대한예방의학회 2003 예방의학회지 Vol.36 No.1

Objectives : To assess the difference in the volume of psychiatric treatments provided to health insurance inpatients, compared with those on medical assistance(the medical aid program) Korean psychiatric hospitals, and to determine factors which affect the volume of the services. Methods : 21 psychiatrists, from 3 Korean psychiatric hospitals recorded the frequencies psychiatric treatments provided to inpatients in one week (February 18-24, 2002). The records of 329 patients were analyzed through t-tests, and random effectmixed model analyses to define the difference between the two groups, and to find other factors affecting the volume of service. Results : A significant difference in the volume of psychiatric treatments provided was observed between the health insurance and medical assistance groups. The variation in the volume of service between hospitals was prominent, and other factors (gender, agegroup, length of stay and mental disorder)were also found to be significant. The patients on medical assistance received only 70% of the psychiatric treatments of those on health insurance. Conclusions : More effort is required to improve the methods of payment to increase the level of fee scheduling for medical assistance. Further studies on the mechanisms causing these differences in the volume of service are required.

대성리 국민 관광지의 운영 실태와 관리 방안

이대희(Lee Dae-hee) 서울행정학회 2002 한국사회와 행정연구 Vol.12 No.4

The purpose of this study is to examine the facts, problems and to recommend a new strategic direction for the management at Dae-Sung Ri public tourism resort. To perform this research, I discuss the theoretical investigation of public tourism resort. and do statistical analysis. The data was collected from university students and local residents through a questionnaire. The statistical analysis of data was made using the factor analysis and the multiple regression. The results of factor analysis was the followings: 1) the institution kindness intention, 2) the activity intention. 3) the rest intention, 4) the knowledge intention, 5) the price intention, 6) the sensitivity intention. The multiple regression analysis was performed in this study based on the six factors. The end result of the analysis proved that the top three factors that had the most significant impact on tourist's satisfaction are in the following order: 1) the activity intention, 2) the sensitivity intention and 3) the institution kindness intention. This study suggests that, in order to provide high quality service to the tourist and promote the customer satisfaction, the management at Dae-Sung Ri public tourism resort should realign its strategy to put more emphasis and resources on those factors.

다목적함수를 이용한 지능형 브레이커의 타격성능 최적화

이대희,노대경,박성수,이근호,강영기,조재상,장주섭,Lee, Dae-Hee,Noh, Dae-Kyung,Park, Sung-Su,Lee, Geun-Ho,Kang, Young-Ky,Cho, Jae-Sang,Jang, Joo-Sup 한국시뮬레이션학회 2017 한국시뮬레이션학회 논문지 Vol.26 No.4

This paper discusses the design parameter sensitivity analysis and multi-objective function optimization for improving the impact performance of an auto-sensing breaker based on the analytical model of the same, which secured reliability in a previous research. The study aims to improve both impact power and stability by complementing the existing research that only improved the impact power. The study sequence is as follows: first, the analysis scenarios for the accurate sensitivity analysis and optimization are set up. Second, the sensitivity of the design parameter of the auto-sensing breaker is analyzed, and the variables with high sensitivity are extracted. Third, the extracted variables are used to optimize the multi-objective functions, and the optimized performance is compared with the initial performance to see how the impact performance on the existing auto-sensing breaker has improved. This study is based on domestic technology, and will allow the development of products with a better blowing performance than their existing overseas counterparts. 본 논문에서는 선행연구에서 신뢰성을 확보한 지능형 브레이커의 해석모델을 바탕으로 지능형 브레이커의 타격성능 개선을 위한 설계변수 민감도 분석 및 다목적함수 최적화를 다룬다. 본 연구에서는 타격출력만을 향상시키는 기존의 연구를 보완하여 타격출력과 안정성 모두를 개선시키는 것을 목표로 한다. 연구를 진행하는 순서는 다음과 같다. 먼저 정확한 민감도 분석 및 최적화를 진행하기 위하여 해석 시나리오를 설정한다. 그 후 지능형 브레이커의 설계변수 민감도를 분석하고, 상위 민감도를 가지는 변수를 추출한다. 마지막으로 추출한 변수를 사용하여 다목적함수 최적화를 진행하고, 초기 성능과 최적화된 성능의 비교를 통해 기존 지능형브레이커에서 타격성능이 얼마나 향상되었는지 파악한다. 이러한 연구를 통해 국내 기술력으로 기존 해외 선진사의 제품보다 타격성능이 향상된 제품을 개발할 수 있는 가능성을 확보할 수 있다.

완전 발달된 원형 충돌제트의 노즐 직경이 열전달에 미치는 영향

이대희,원세열,이영민,조헌노,Lee, Dae-Hee,Won, Se-Youl,Lee, Young-Min,Cho, Heon-No 대한기계학회 2000 大韓機械學會論文集B Vol.24 No.4

The effect of nozzle diameter on the local Nusselt number distributions has been investigated for an axisymmetric turbulent jet impinging on the flat plate surface. The flow at the nozzle exit has a fully developed velocity profile. A uniform heat flux boundary condition at the plate surface was created using gold film Intrex. Liquid Crystal was used to measure the plate surface temperature. The experiments were made for the jet Reynolds number (Re) 23,000, the dimensionless nozzle to surface distance (L/d) from 2 to 14, and the nozzle diameter (d) from 1.36 to 3.40 cm. The results show that the Nusselt number at and near the stagnation point increase with an increasing value of the nozzle diameter.

비가우시안 노이즈가 존재하는 수중 환경에서 MBK 시스템의 위치 추정

이대희,양연모,허경무,Lee, Dae-Hee,Yang, Yeon-Mo,Huh, Kyung Moo 대한전자공학회 2013 전자공학회논문지 Vol.50 No.9

This paper study the position estimation of MBK system according to the non-linear filter for non-Gaussian noise in underwater sensor networks. In the filter to estimate location, recently, the extended Kalman filter (EKF) and particle filter are getting attention. EKF is widely used due to the best algorithm in the Gaussian noise environment, but has many restrictions on the usage in non-Gaussian noise environment such as in underwater. In this paper, we propose the improved One-Dimension Particle Filter (ODPF) using the distribution re-interpretation techniques based on the maximum likelihood. Through the simulation, we compared and analyzed the proposed particle filter with the EKF in non-Gaussian underwater sensor networks. In the case of both the sufficient statistical sample and the sufficient calculation capacity, we confirm that the ODPF's result shows more accurate localization than EKF's result. 본 논문은 노이즈가 비 정규 분포를 따르는 수중 환경에서 비 선형 필터 기법에 따른 Mass-Damper-Spring (MBK) 시스템 위치추정에 관한 연구 내용이다. 최근 위치 추정에 사용되는 필터는 확장 칼만 필터 (EKF: Extended Kalman Filter) 와 파티클 필터(Particle Filter)가 주목 받고 있다. EKF는 가우시안 잡음 (Gaussian Noise) 이 존재하는 비선형 시스템에서 정확도가 높은 알고리즘으로 널리 사용되고 있지만, 수중 환경과 같이 비 가우시안 잡음이 존재하는 경우 사용에 많은 제약이 따른다. 이에 본 논문에서는 상태예측을 기반으로 둔 EKF와 비교하여, 통계적 발생 가능성 인자 (Maximum Likelihood) 에 기반한 분포 재해석 기법을 이용한 개선된 ODPF (One-Dimension Particle Filter)를 제안한다. 모의 실험을 통하여 non-Gaussian noise가 존재하는 수중 환경에서 EKF와 제안한 Particle filter를 사용한 위치 추정 결과를 비교 분석하였으며, 계산 용량 및 통계 샘플이 충분한 경우 ODPF가 EKF 대비 정확한 위치 추정 결과를 제공하는 것을 확인하였다.

개방형 GIS의 단순개체 사양을 이용한 공간 기준 좌표계 컴포넌트의 개발

이대희,변수윤,임삼성,Lee, Dae-Hee,Biun, Su-Yun,Lim, Sam-Sung 한국공간정보학회 2000 개방형지리정보시스템학회 논문지 = Journal of the Korea Open Geogr Vol.2 No.1

개방형 GIS 협회(Open GIS Consortium 또는 OGC)에서는 상호연동성과 재사용성을 지닌 시스템 객체기술인 OLE/COM을 위한 단순개체 사양을 제시하고 있다. 본 연구에서는 OGC의 기준에 따라 ATL(Active Template Library)을 이용한 공간 기준 좌표계 컴포넌트를 개발하였다. 본 연구에서 개발한 공간 기준 좌표계 컴포넌트는 44개 종류의 지구 투영법과 서로 다른 공간 좌표계 간의 변환기능을 제공한다. 공간 좌표계 변환방법은 7 매개변수 변환법(Bursa-Wolf) 좌표변환과 몰로덴스키(Molodensky) 좌표변환을 모두 포함한다. 또한 사용자는 공간 좌표계 설정에 필요한 모든 구성 요소와 그 속성값을 설정함으로써 사용자가 원하는 공간 좌표계를 설정할 수 있다. 그리고 미리 정의된 텍스트(WellKnownText)를 이용한 공간 기준 좌표계의 객체 생성 및 저장이 가능하다. 연구에서 구현한 공간 기준 좌표계 컴포넌트는 다양한 GIS 응용프로그램에서 재사용됨으로써 시스템 개발시간을 단축시키고 사용자가 원하는 공간 좌표계를 쉽게 정의할 수 있게 한다. Open GIS Consortium(OGC) provides with Simple Features Specification for OLE/COM which is a system object technology of interoperability and reusable capability. In this research, the Spatial Reference System(SRS) component is developed based on the OGC specification using ATL. The component presents 44 map projections and transformations between different geographic coordinate systems utilizing the seven parameter(Bursa Wolf) and Molodenski's methods, a user can set up all objects and its attributes comprising SRS and can create SRS and save its setting using predefined text, WellKnownText. The Spatial Reference System component can be easily implemented into the variety of GIS software so that it reduces the developing time for a system and defines new reference system without difficulty.

ORFEUS 위성을 이용한 성간 수소분자의 전천 관측

이대희,선광일,민경욱,Lee, Dae-Hee,Seon, Kwang-Il,Min, Kyoung-Wook 한국천문학회 2005 天文學論叢 Vol.20 No.1

We present measurements of interstellar $H_2$ absorption lines in the continuum spectra of 54 early-type stars in the Galactic disk and halo and 3 stars in the Magellanic Clouds. The data were obtained with the Berkeley Extreme and Far-Ultraviolet Spectrometer (BEFS), part of the ORFEUS telescope, which flew on the ORFEUS-SPAS I and II space-shuttle missions in 1993 and 1996, respectively. The spectra extend from the interstellar cutoff at $912{\AA}$ to about $1200{\AA}$ with a spectral resolution of ${\sim}3000$ and statistical signal-to-noise ratios between 10 and 65. Assuming a velocity profile derived from optical observations (when available), we model the column densities N(J) of the rotational levels J = 0 through 5 for each line of sight. Our data reproduce the relationships among molecular and total hydrogen column density, fractional molecular abundance, and reddening first seen in Copernicusobservations of nearby stars (Savage et al. 1977). The results show that most of these molecular clouds have $H_2$ total column densities between $10^{15}cm^{-2}$ and $10^{21}cm^{-2}$, and kinetic temperatures from 21 K to 232 K, with average of 89 K, consistent with the result of Copernicus (Savage et al. 1977).

편광분석을 이용한 2차원 위상지연 분포 측정과 ABF 필름의 공정 최적화에 관한 연구

이대희,최세진,방주엽,김동진,김한성,Lee, Dae Hee,Choi, Se Jin,Bang, Ju Yup,Kim, Dong Jin,Kim, Han Seong 한국섬유공학회 2016 한국섬유공학회지 Vol.53 No.1

Polarimetry is a non-destructive technique that measures the degree of rotation of polarized light passing through an optically active material. Optical activity is determined by various factors, including intrinsic optical properties and residual stress. Thus, polarimetry can be used in various fields. In this study, polarimetry was used to evaluate the two-dimensional spatial uniformity of optical birefringence in an Ajinomoto build-up film. This analysis can predict the optimal cure condtitions of the film, which creates a uniform phase retardation distribution.

터빈 블레이드 표면과 선형익렬에서의 열전달 및 유동측정 연구

이대희,심재경,박성봉,이재호,윤순현,Lee, Dae Hee,Sim, Jae Kyung,Park, Sung Bong,Lee, Jae Ho,Yoon, Soon Hyun 대한기계학회 1999 大韓機械學會論文集B Vol.23 No.5

An experimental study has been conducted to investigate the effects of the free stream turbulence intensity and Reynolds number on the heat transfer and flow characteristics In the linear turbine cascade. Profiles of the time-averaged velocity, turbulence intensity, and Reynolds stress were measured in the turbine cascade passage. The static pressure and heat transfer distributions on the blade suction and pressure surfaces were also measured. The experiments were made for the Reynolds number based on the chord length, Rec = $2.2{\times}10^4$ to $1.1{\times}10^5$ and the free stream turbulence intensity, $FSTI_1$ = 0.6% to 9.1 %. The uniform heat flux boundary condition on the blade surface was created using the gold film Intrex and the surface temperature was measured by liquid crystal, while hot wire probes were used for the flow measurements. The results show that the free stream turbulence promotes the boundary layer development and delays the flow separation point on the suction surface. It was found that the boundary layer flows on the suction surface for all Reynolds numbers tested with $FSTI_1$ = 0.6% are laminar. It was also found that the heat transfer coefficient on the blade surface increases as the free stream turbulence intensity increases and the flow separation point moves downstream with an increasing Reynolds number. The results of skin friction coefficients are in good agreement with the heat transfer results in that for $FSTI_1{\geq}2.6%$, the turbulent boundary layer separation occurs.

정신과적 장애와 연관되는 신경계 질환들

이대희,Lee, Dae-Hee 한국정신신체의학회 1996 정신신체의학 Vol.4 No.2

The studying and teaching of behavioral neurology remain in their infancy. As the arena for studying how the brain subserves cognition, emotion and consciousness, behavioral neurology straddles the boundaries of numerous, more established disciplines-extending from the most fundamental explorations of molecular biology to the broadest questions of philosophy. In behavioral neurology, the area of neural dysfunction as well as the pathogenesis must be determined. There are cases in which a more thorough mental status examination must be performed. These are practically the cases with known or suspected brain lesions and acute psychiatric disorders.