GIS를 이용한 2차원 수치모형의 자연하천 적용

김병현 ( Byung Hyun Kim ),한건연 ( Kun Yeon Han ) 한국지리정보학회 2009 한국지리정보학회지 Vol.12 No.3

현재까지 개발되고 있는 대부분의 유한체적모형은 가상하도 및 실험하도와 같은 단순하도에 적용하여 흐름율과 생성항의 균형문제를 해결하기 위한 여러 가지 노력들이 있어 왔다. 하지만, 실제 자연하천에서의 적용에서는 단순하도에서의 적용에서 나타나지 않았던 여러 가지 문제점들이 발생하며, 이러한 문제점들을 수치적으로 해결하여야 비로소 자연하천에서의 적용이 가능하다. 본 연구에서는 자연하천에 적용가능한 2차원 유한체적모형을 개발하여 2차원 부분적 댐 붕괴에 적용하여 개발모형의 정확성을 검증하고, 한강의 측량단면을 GIS를 이용하여 2차원 격자에 정확하게 반영할 수 있는 간단하고 효율적인 2차원 격자생성기법을 제안하였다. 그리고 제안된 기법으로 생성된 2차원 격자로 한강에 대한 흐름모의를 수행하고 계산수위와 실측수위를 비교하여 자연하천에 대한 개발모형의 정확성 및 적용성을 입증하였다. A lot of efforts have been made to resolve balancing problems between flux and source term and most finite volume models under development have been applied to simple channels such as imaginary and experimental channels. However, a number of numerical problems which can not be found in simple channels occur in the application to natural rivers and the problems should be resolved to apply finite volume models to natural rivers. In this study, 2D finite volume model which is applicable to natural rivers was developed and the accuracy of the developed model was validated through the application of partial dam break In addition, a simple and efficient 2D mesh generation method was suggested and the method can be accurately reflected to 2D mesh converted from surveyed cross sections in Han-river using GIS. The accuracy and applicability of the developed model on natural rivers were verified by performing simulation on Han-river using the generated mesh and comparing computed water elevation with measured water elevation.

ABAQUS를 이용한 휨벽체의 비선형 유한요소 해석기법

한민기,박완신,한병찬,황선경,최창식,윤현도 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)

The finite element method(FEM) models were developed for the reinforced concrete flexural walls and analysed under constant axial and monotonic lateral load using ABAQUS. The major objective of the present study is to determine if the ABAQUS finite element program can be used to accurately model the post-cracked mode of failure in plastic regions of walls, and, if so, to develop practical failure criteria in the plastic range of the material response. The research comprises constitutive models to represent behavior of the materials that compose a wall on the basis of experimental data, development of techniques that are appropriate for analysis of reinforced concrete structures, verification, and calibration of the global model for reinforced concrete walls of increasing complexity. The proposed FEA technique is verified by Lefas's benchmark data. Results from the analyses of these FEM models offers significant insight into the flexural behavior of benchmark data.

文獻考察을 통한 醫療利用 分析

한창현,황병덕 慶山大學校 保健福祉硏究所 1999 保健福祉硏究 Vol.3 No.-

This study was conducted to analyse the utilization rate of medical care with the residents in a community by classifying the result shown in 52 of 108 studies published by the domestic theses for a degree, magazines and reports from 1980 to 1992 into such items as period, area, sex, age, education background, medical security status. The results of this study are summarized as follows. It revealed that the utilization rate of a pharmacy was highest in both rural and urban areas from 1980 to 1985 and from 1986 to 1992. In addition, the utilization rate of the public health center and oriental medical clinic was higher in the rural area than that of the urban area from 1986 to 1992, while the utilization rate of the hospital and clinic was high in the urban area. The utilization rate of a pharmacy was highest, and then the hospital and clinic were high all over the country. Based on the sex, the utilization rate of medical service indicated that the female was higher than the male from 1980 to 1985 and from 1986 to 1992. Based on the age, findings were that the utilization rate of hospital and clinic was highest in the groups with 0-4 years old from 1980 to 1985 and from 1986 to 1992, while the utilization rate of a pharmacy was highest in the groups with 50-90 years old. Based on the educational background, it was shown that the higher the educational background, the higher the using frequency of the dental clinic and pharmacy, while the higher the educational background, the lower the using frequency of Oriental medical clinic, public health center, and public health clinic. The utilization rate of medical care according to the medical security status indicated the the using frequency of hospital and clinic was high for the beneficiaries of medical security program than subjects who were not applied any medical security program from 1980 to 1985, 1986-1992.

직업적 연폭로에서 혈중 연량 수준에 따른 선별검사로서의 혈중 ZPP 검사의 타당도

한구석,안현철,김용배,리갑수,김화성,황규윤,장봉기,이성수,안규동,이병국 순천향대학교 산업의학연구소 1999 순천향산업의학 Vol.5 No.1

In order to evaluate the validity of current screening criteria of lead exposure and to provide effective information for the better health management of lead workers, author investigated the interrelationship between blood lead and blood zinc protoporphyrin(ZPP) and evaluate the validity of blood zinc protoporphyrin as the screening test and blood lead as gold standard of diagnostic test. The total of 2245 lead workers (male workers: 1982, female workers : 263) from 12 lead using industries were studied. Blood lead, ZPP, hemoglobin and hematocrit were selected as lead exposure variables. Personal information on sex, age and work duration were also checked. Blood lead was measured with flameless atomic absorption spectrometry (model: Hitachi 8100) using standard addition method. Blood ZPP was measured with portable hematoflurometer (model: Aviv 206). The results obtained were as follows: 1. The mean blood lead of all lead workers were 0.7±14.3㎍/㎗(Male: 31.0±14.4㎍/㎗, Female: 28.2±12.9㎍/㎗), whereas the mean blood ZPP of those were 68.1±47.5㎍/㎗(Male: 63.9±43.7㎍/㎗, Female: 100.1±61.0㎍/㎗). The mean value of hemoglobin and hematocrit of all lead workers were 14.5±1.5g/㎗(Male: 14.7±1.3g/㎗, Female: 12.3±1.2g/㎗) and 45.4±3.6(Male: 46.2±2.8, Female: 39.5±3.1) respectively. 2. Validity of test using blood zinc protoporphyrin as screening test for blood lead levels of 30㎍/㎗ as gold standard of diagnostic test revealed that the highest validity value for male and female lead workers were 50 and 90 ㎍/㎗ of ZPP respectively, showing 50 and 60 ㎍/㎗ of ZPP for all lead workers. While those test for blood lead levels of 40㎍/㎗ as gold standard of diagnostic test revealed that the highest validity value for male and female lead workers were 60 and 90 ㎍/㎗ of ZPP respectively, showing 60 ㎍/㎗ of ZPP for all lead workers, those test for blood lead levels of 50 and 60㎍/㎗ as gold standard of diagnostic test revealed that the highest validity value for male and female lead workers were 60 or 70 and 100 ㎍/㎗ ZPP respectively, showing 60and 70 or 80 ㎍/㎗ of ZPP for all lead workers. 3. Predictive value of test using blood zinc protoporphyrin as the screening test for different blood lead levels of 30, 40, 50 and 60㎍/㎗ as gold standard of diagnostic test revealed that positive predictive value of screening test were decreased by the increase of blood lead level regardless of csreening criteria value ZPP and negative predictive value of screening test were increased accordingly regardless of screening criteria value of ZPP. On the other hand, within same blood lead level as a gold standard positive predictive values were inceased by the increase of screening criteria value of ZPP, whereas the negative predictive value were decreased accordingly by the the increase of screening criteria value of ZPP. 4. The correlation analysis of all lead workers among study variables revealed that CPbB and natural log transformation ZPP(LZPP) were better correlated with other variables and found to be better estimate than PbB and ZPP themselves. The age was correlated with all other variables, but the work duration was not. The correlation analysis of male and female workers among study variables revealed the same results with all lead workers. 5. The slope of simple linear regression of CPbB (independent variable) with ZPP in female workers(3.223)was steeper than in male workers(2.144). That of lead workers with work duration of less than 1 year was steeper than that of lead workers whose work duration was more than 1 year. But there was no slope difference between two groups divided by their work duration of 2 years less and more. The slope of simple linear regression of CPbB lead (independent variable)with ZPP in lead workers whose blood lead were higher than 30㎍/㎗and 40㎍/㎗ were steeper than those whose blood lead were less than 30㎍/㎗ and 40㎍/㎗. 6. The slope of simple linear regression of CPbB (independent variable) with ZPP in lead industries with low mean blood lead were less steeper than those with high mean blood lead. 7. The slope of simple linear regression of CPbB (independent variable) with LZPP in female workers(0.0308was steeper than in male workers(0.0253). That of lead workers with work duration of less than 1 year was steeper than that of lead workers whose work duration was more than 1 year. But where was no slope difference between two groups divided by their work duration of 2 years less and more. While the slope of simple linear regression of CPbB lead (independent variable) with LZPP in lead workers whose blood lead were hogher than 30㎍/㎗ was not steeper than those whose blood lead were less than 30㎍/㎗, there was no slope difference between two groups whose blood lead were less than 40㎍/㎗ and more than 40㎍/㎗. 8. The slope of simple linear regression of CPbB (independent variable) with LZPP in lead industries with low mean blood lead were less steeper than those with high mean blood lead, but the difference was not significant then that of CPbB and ZPP. With above results, it is recommended that the screening criteria value of ZPP should be down to 60-70㎍/㎗ from 100㎍/㎗ for male lead workers and screening criteria of ZPP for female lead workers was all right with current value of 100㎍/㎗. So it is recommended to make different screening criteria of ZPP for male and female workers like the hemoglobin and hematocrit screening criteria. It is also preferable to use CPbB and LZPP rather than uncorrected PbB and ZPP in the evaluation of lead exposure for lead workers.

공무원 다문화역량 교육프로그램 개발연구를 위한 요구 분석

이병준,박응희,한현우 한국문화교육학회 2010 문화예술교육연구 Vol.5 No.1

노동의 세계화와 국제결혼, 다양한 종교의 유입 등 변화하고 글로벌화하는 사회환경에 따른 여러 문제들은 이제 지역차원에서의 적극적인 대응을 행정서비스에 요구하고 있다. 본 연구의 목적은 다문화사회의 진입에 따른 직접적인 행정서비스를 수행하고 있는 공무원들을 대상으로 그들의 다문화역량개발에 도움을 줄 수 있는 교육프로그램을 개발하기 위한 요구를 파악하기 위함이다. 다문화역량은 다문화학습의 과정을 거쳐 생겨난다고 알려져 있다. 특히 다문화역량의 구성요소에 관해서는 국가와 연구자별로 차이를 보이고 있는데, 미국의 경우 다문화역량은 문화적 의식, 등을 거쳐 습득되는 문화적 역량의 개념으로 이해되어지며, 독일의 경우 다문화역량은 의사소통능력, 갈등관리능력 등의 기초역량에서부터 문화 간의 차이 인정 능력에 이르기까지의 문화적 역량이 포괄된 역량으로 이해되어지고 있다. 본 연구의 결과로 나타는 현재의 공무원들의 다문화역량에 대한 의식수준은 전반적으로 평균수준이며 결핍된 역량에 대한 교육요구는 상당히 높다고 볼 수 있다. 특히 적지 않는 공무원들이 자기 자신의 변화가 우선적으로 중요하다고 답변한 것은 프로그램의 기획에 있어 시사하는 바가 적지 않다고 볼 것이다. The purpose of this study is to make basic materials of education programs helping competency development for public officials who are conducting public service directly, as the multi-cultural society has come. The variety of issues came after the changeable and globalized social environment such as globalization in labor industry, international marriage and introduction of diverse religion. Those are in need of active responses to public service. We recognize the need of education programs that fit in the multi-cultural paradigm, then it can possibly be used for building curriculum and education system of multi-cultural competency development as basic materials. We have to promote a learning culture for the proper response to the multi-cultural society. It can be helpful to enter a mature civil society when we recognize and embrace identities of minority groups through an education for public officials who directly provide the multi-cultural public service.

쌀, 조, 수수 및 콩의 食餌가 흰쥐의 成長 및 血液性狀에 미치는 影響

한백수,주현규,사동민,박병순,박기웅 선문대학교 첨단과학기술연구소 1996 첨단과학기술연구소 논문집 Vol.1 No.1

쌀, 조 수수, 및 콩의 식이가 흰쥐의 성장 및 혈액 성상에 미치는 영향을 조사하기 위하여, 평균체중 180g의 Sprague-Dawley계 rat(♂) 각 5마리씩을 대조군(T_(0)), 쌀(T_(1)), 조(T_(2)), 수수(T_(3)), 콩(T_(4))급이군등 5개군으로 나누어 실온에서 6주간 사육하면서 사료섭취량, 급수량, 증체량과 6주후의 혈액상의 변화틀 조사하였다. 사료 섭취량은 대조군이 각 처리 실험군보다 높았으며 물의 급수량도 동일한 결과이었으며 그 순위는 쌀, 조, 콩, 수수 순으로 감소하였으며, 각 처리군의 증체량은 대조군 보다 낮았으며, 특히 수수는 초기보다 감소하였고, 각 처리군의 사료효율은 대조군보다 낮았으며 특히 수수처리군이 타 처리군보다 낮았다. 연액성상의 변희는 대조군에서는 큰 변화가 없으나 수수군에서 BUN, HOT지 다른군보다 높았으며 쌀의 처리군은 creatinine치가 높았고 조에서는 혈당치가 낮았으며, 콩에서는 LDH는 높았고, HGB, HCT, PI.T, RBC가 낮았고, 특히 콩 수수에서는 혈액상의 변화가 가장 컸으며 다른 실험군과 비교하였을 때 통계적인 유의성이 인정되었다. This study was conducted to investigate the effects of rice, millet, sorghum and soybean diet on the growth rate, daily intake feed ratio and change in hematology of male rats. The experimental male rats of 180g average weight were fed on control (T_(0)), rice (T_(1)), millet (T_(2)), sorghum (T_(3)) and soybean diet (T_(4)) for 6 weeks. The amount of daily feed and water intake supply in each diet group is higher than that of control group to as shown in the following order: rice, millet, soybean, sorghum. The growth ratio of each diet group is lower than that of control group. Especially, sorghum made each diet group reduce the weight even more than the initial weight. Control group is lower than each diet group in regard to the effective ratio of feed. Especially, the sorghum group is lower than other groups. Control group remained same in the change of hematology, however, sorghum group is higher than other groups for BUN, HCT. Rice group is higher in creatinine and millet group is lower in glucose content of serum than any other groups. Soybean group is higher in LDH but lower in HGB, HCT, PLT, RBC than control group. Especially, the soybean and sorghum groups showed a big change in hematology and had the statistic significance in comparison to other groups.

철근콘크리트 연속보에서 부분프리스트레스 도입에 의한 휨보강 효과에 관한 연구

한병찬,윤현도,박완신,황선경,임재형,문정호 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)

A strengthening technique for reinforced concrete beams using external unbonded reinforcement offers advantages in speed and simplicity of installation over other, established, strengthening techniques. The purpose of this paper is to investigate the capabilities of a new retrofitting technique, namely external prestressing(Bow), for flexural strengthening of beams. The paper provides a general description of structural behavior of beams strengthened using the technique. Results of 2 physical tests on strengthened reinforced concrete continuous beams are reported and compared. It is shown that the technique can provide greater strength enhancement to lightly reinforced sections and that provision of deflectors enhances efficiency.

외상성 신동맥 색전증 1례

한병규,김욱현,문기혁,송윤섭,박영호 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Renal artery thrombosis may result from external trauma of a blunt nature. Such injury is induced by rapid deceleration resulting in the stretching of the renal vasculature, disruption of the arterial intima-the least elastic layer of the arterial wall and eventual thrombosis. The treatment of renal artery thrombosis is controversial, with physician's options divided between prompt surgical exploration with vascular repair and clinical observation. We experienced 1 case of traumatic renal artery thrombosis and report that with a brief review of the literature.

후외상성 진주종 2례

남부현,김병국,고필준,심장한,박찬일 충남대학교 의과대학 지역사회의학연구소 1996 충남의대잡지 Vol.23 No.1

Post-traumatic cholesteatoma can be originated in the middle ear or mastoid cavity after head trauma such as temporal bone fracture, penetrating injury of the temporal bone or blast injury of the tympanic membrane. It usually takes a long time to develope cholesteatoma after injury, and physicians may overlook its association with previous, trauma. Post-traumatic cholesteatoma can be suspected in patients with head trauma history and atypical cholesteatoma findings. We experienced two cases of cholesteatoma which found behind the intact tympanic membrane in 7 and 13 years old boys with history of head trauma, and we are reporting this with a discussion and literatural review.

표준 용매 벤젠의 Rayleigh 비의 온도 의존성

박일현,이종근,윤관한,조동환,민병길,방대석 金烏工科大學校 2000 論文集 Vol.21 No.-

The Rayleigh ratio of benzene is a very important physical constant with which the integrated scattered intensity of laser light scattering can be converted into the absolute value. In this study temperature dependence of Rayleigh ratio of this solvent has been investigated with two different methods in the temperature range of 25-75℃. It was found that in the direct measurement the non-linear behavior of its Rayleigh ratio were observed as increasing temperature even if the scattering volume correction was applied to the scattered intensity of benzene. However the result of indirect measurement based upon the invariance of molecular weight of standard polystyrene polymer for any polymer solution temperature showed us that its temperature dependence up to 75℃ could be expressed with the Benoit's linear equation rather than the non-linear one. It seems that the scattered intensity in direct method has more complicate contributions at the elevated temperature. Further research works are necessary in order to solve such discrepancy clearly.