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검색결과 357건 처리시간 0.029초

운영 체제와 컴파일러에 따른 Geospatial Data Abstraction Library의 Hierarchical Data Format 형식 원격 탐사 자료 추출 속도 비교 (Comparison of the wall clock time for extracting remote sensing data in Hierarchical Data Format using Geospatial Data Abstraction Library by operating system and compiler)

  • 유병현;김광수;이지혜
    • 한국농림기상학회지
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    • 제21권1호
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    • pp.65-73
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    • 2019
  • 지역이나 전구 규모의 농업 생태계를 감시하기 위해 HDF 형식으로 제공되는 MODIS 원격 탐사자료가 사용되어 왔다. 대개의 경우, 다량의 영상자료들이 처리되어야 하기 때문에, 이들 자료의 처리 성능을 향상시키는 것이 유리하다. 본 연구는 HDF 파일을 처리할 수 있는 GDAL과 같은 라이브러리가 운영 체제나 배포 방식 등에 따른 처리속도의 차이를 확인하여 원격 탐사 자료 처리 시스템 구축을 지원하고자 하였다. 이를 위해, GDAL이 시스템에 설치되는 주요 조건들에 따라 MODIS 영상자료 처리 시간을 측정하고 비교하였다. 운영 체제(Ubuntu 및 openSUSE), 컴파일러(GNU 및 Intel), 설치 옵션 및 바이너리 패키지 조건을 조합하여 GDAL성능 비교가 이루어졌다. 각 조건에 따라 설치된 GDAL을 사용하여 MODIS 영상 중 대기측정 자료(MOD07)의 2차원 변수와 3차원 변수에 해당하는 총 10 종의 자료를 추출하였다. 자료처리에 소요된 구동 시간은 각 변수 값을 시스템 메모리에 저장하는 작업이 끝난 직후 측정되었다. 가장 좋은 성능을 보인 설치 조건은 Ubuntu에서 Intel Compiler를 사용하여 컴파일 된 GDAL을 사용하는 것이었다. OpenSUSE에서는 GNU와 Intel 컴파일러가 각각 2차원 자료와 3차원 자료를 처리하기 위한 작업에 효과적인 것으로 나타났다. 한편 "--with-hdf4=no" 옵션으로 컴파일 된 GDAL과 RPM package manager 버전의 GDAL의 경우, 다른 조건에 비해 상당히 낮은 성능을 보였다. 이러한 결과는 운영 체제나 컴파일러, 설치 옵션 등을 조정하여 원격 탐사자료 처리 도구의 속도를 개선할 수 있다는 것을 암시하였다. 특히, 원격 탐사 자료의 경우 다양한 형식으로 배포되므로, 이를 처리하는 라이브러리들이 최고의 성능을 발휘할 수 있는 조건을 탐색하고 이러한 결과의 공유가 후속연구에서 진행되어야 할 것으로 보인다.

산림경영활동에 따른 수종별 지상부생물량 및 목재생산량 변화 모델링: 가리왕산 모델숲을 대상으로 (Modeling the Effects of Forest Management Scenarios on Aboveground Biomass and Wood Production: A Study in Mt. Gariwang, South Korea)

  • 조원희;임원택;최원일;양희문;고동욱
    • 한국산림과학회지
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    • 제112권2호
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    • pp.173-187
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    • 2023
  • 우리나라의 산림은 조림과 산림보호정책의 결과로 임목축적이 크게 증가하였으며, 이에 따라 공익적 가치도 매우 높게 평가받게 되었다. 최근 벌기령이 도래함에 따라 간벌과 수확벌채 등의 시업을 비롯한 산림경영활동의 필요성이 대두되고 있으며, 이에 따라 산림경영활동의 장기적인 영향을 과학적으로 비교분석하는 것은 매우 중요한 일이다. 이 연구는 가리왕산 모델숲을 대상으로 실시되었으며, 산림경관모형 LANDIS-II를 활용하여 주요 16개 수종에 대한 식생자료와 환경 특성 모수, 4가지 산림경영활동을 반영하여 수행한 모의를 통해 추정한 수종별 지상부생물량 변화를 바탕으로 산림경영활동이 식생의 천이와 목재생산량에 미칠 수 있는 영향을 평가하였다. 모형에 적용된 산림경영활동은 벌채강도와 벌채주기, 벌채기간에 따라 택벌림(Selection), 산벌림(Shelterwood), 이단림(Two-stories)과 비시업(no-mgt)으로 구성되어있으며, 이를 시나리오로 모형에 적용하여 산림경영활동에 따른 200년간의 지상부생물량의 변화를 통해 산림경관 변화를 모의하였다. 모의 결과 가리왕산 모델숲의 총 지상부생물량은 간벌과 수확벌채 시업 직후 크게 감소하였으나, 시나리오에 따라 수확벌채 시업 후 15년에서 50년이 지나며 시업 전 수준으로 회복되었고 200년 후에는 산림경영활동이 전혀 없는 시나리오보다 더 많은 지상부생물량을 지닐 것으로 평가되었다. 특히 내음성이 양수와 중성수로 분류된 수종의 지상부생물량은 수확벌채 시업 직후 크게 감소하였지만 신규개체의 발아와 정착으로 지상부생물량이 일부 회복하는 경향을 보였으며, 음수인 수종은 초기 수확벌채 시업에서 임령이 낮아 시업 대상으로 선정되지 않고 지속적으로 생장하여 모의 100년 이후에는 주요 우점수종이 되는 것으로 나타났다. 각 시나리오의 최종 누적 목재생산량은 택벌림 산림경영활동 시나리오에서 545.6 ton/ha, 산벌림 산림경영활동 시나리오에서 141.6 ton/ha, 이단림 산림경영활동 시나리오에서 299.9 ton/ha일 것으로 추정되었다. 목재생산량의 수종구성은 벌채강도와 벌채기간에 따라 차이를 보였으며, 특히 택벌림과 이단림의 산림경영활동 시나리오에서 수확벌채 시업 초기 목재생산량은 양수와 중성수 비율이 큰 것으로 나타났으나 시간이 지남에 따라 음수의 비율이 증가하였다. 이에 따라 산림경영활동은 산림생태계의 수종별 지상부생물량과 수확벌채 시업에 의한 목재생산량에도 영향을 끼치는 것으로 나타났다. 따라서, 본 연구에서는 산림경관모형 LANDIS-II를 활용한 시공간적 분석의 가능성을 규명하였으며, 이를 통해 산림생태계 관리 목표에 부합하는 산림경영활동 선정에 대한 기초자료를 제공할 수 있을 것으로 판단된다.

후두암의 방사선치료 Patterns of Care Study를 위한 프로그램 항목 개발: 예비 결과 (Investigation of Study Items for the Patterns of Care Study in the Radiotherapy of Laryngeal Cancer: Preliminary Results)

  • 정웅기;김일한;안성자;남택근;오윤경;송주영;나병식;정경애;권형철;김정수;김수곤;강정구
    • Radiation Oncology Journal
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    • 제21권4호
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    • pp.299-305
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    • 2003
  • 목적: 후두암 방사선치료의 표준화를 위하여 후두암에 관한 기본적인 임상 자료를 축적하고 필요한 조사 항목을 결정하여 전국적인 웹 기반 데이터 베이스 시스템을 개발하고자 하였다. 대상 및 방법: 1998년 1월부터 1999년 12월까지 호서호남 지역에서 후두암으로 진단되어 방사선치료를 받은 환자를 대상으로 임상적 분석을 시행하였다. 환자 선정 기준은 18세 이상이며 과거력상 타 장기의 암 진단 병력이 없고 후두에서 기원한 원발성 상피세포암으로 과거 후두에 대한 다른 질환으로 치료력이 없는 환자를 대상으로 하였다. 후두암에 관한 조사 항목 개발은 대한방사선종양학회 호서호남지회 소속 병원의 전문의들이 합의하여 일차적으로 선정한 항목에 대하여 각 병원에서 자체적으로 조사하였다. 통계처리는 SPSS v10.0을 이용하였다. 결과: 자료가 수집된 총 증례수는 45예이었다. 환자의 연령분포는 28$\~$88세(중앙값: 61)이었고 남녀비는 10 대 1로 대부분 남자에 발생하였다. 원발부위는 성문암이 28예(62$\%$), 성문상부암이 17예(38$\%$)이었다. 병리소견으로는 편평세포암이 대부분이었다(44/45, 98$\%$). AJCC (1997년도) 병기 I+II는, 성문암 28예 중 24예(86$\%$)에 비해 성문상부암의 경우는 16예 중 8예(50$\%$)이었다(p=0.002). 증상은 애성이 n예(89%$\%$로 가장 많았다. 진단은 간접후두경이 전체환자에서, 직접후두경검사는 43예(98$\%$)에서 각각 시행되었다. 치료로서 성문암 28예와 성문상부암 17예 중, 방사선 단독치료는 21예(75$\%$), 6예(35$\%$)에서 각각 시행되었다. 또한 수술요법과 방사선요법의 병용은 각각 5예(18$\%$), 8예(47$\%$)이었고, 항암화학요법과 방사선요법의 병용치료는 각각 2예(7$\%$), 3예(18$\%$)이었으나 두 원발 병소 간에 병용치료 빈도의 유의한 차이는 없었다(p=0.20). 방사선치료는 모두 선형가속기 6 MV X-ray를 이용하여 통상적 분할조사 법으로 시행되었다. 분할선량은 성문암 환자의 86$\%$에서 2.0 Gy를 사용한 반면 성문상부암은 59$\%$에서 1.8 Gy를 각각 사용하였다. 방사선단독치료를 완료한 환자에서 원발병소의 평균 총방사선량은 성문암에서 65.98 Gy, 성문상부암에서 70.15 Gy이었다. 수집된 자료를 기초로 후두암 방사선치료형태 연구에 필요한 총 12개의 모듈과 90개의 항목을 개 발하였다. 결론: 본 연구에서는 후두암 데이터베이스 시스템에 필요한 연구 항목을 개발하였다. 향후 웹 기반 데이터 베이스 시스템을 완성하고 전국의 방사선치료 자료를 축적하여 후두암에 대한 한국형 방사선치료의 표준화 및 적정화를 기하고자 한다.

실험적 급성호흡부전에서 호기말양압에 의한 폐유순도와 산소운반의 변화 및 상관관계 - 호흡부전의 기전에 따른 차이 - (Relationship of Compliance and Oxygen Transport in Experimental Acute Respiratory Failure during Positive End-Expiratory Pressure Ventilation)

  • 이상도;윤세진;이복희;한성구;심영수;김건열;한용철
    • Tuberculosis and Respiratory Diseases
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    • 제40권1호
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    • pp.6-15
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    • 1993
  • 연구배경 : 성인성 호흡곤란증후군에서 호기말양압(PEEP)이 저산소혈증을 호전시키는 기전은 감소된 기능적잔기량의 증가에 따른 생리적단락의 감소이며 어느 수준 이상의 PEEP에서는 심박출량이 유의하게 감소해 산소운반은 오히려 감소하는 것으로 알려져 있다. 산소운반이 최대인 PEEP 수준을 결정하는 비관혈적 지표로 폐유순도(compliance)가 보고되었으나 이의 유용성에 대해서는 논란이 많다. 한편 급성 폐동맥색전증은 성인성 호흡곤란증후군과는 달리 기능성 잔기량의 감소가 유의하지 않은 질환이며 따라서 PEEP의 적용에 따른 환기 및 혈류역학의 변화도 다를 것으로 추측된다. 저자들은 성인성 호흡곤란증후군과 급성 폐동맥색전증에서 총정적유순도(total static compliance)가 산소운반을 최대로하는 PEEP 수준의 결정에 유용한 지표로 이용될 수 있는가를 검정해보고, 성인성 호흡곤란증후군과는 저산소증의 기전이 다른 급성 폐동맥색전증에서 PEEP 적용에 따른 환기 및 혈역학의 변화에 대한 기초자료를 제공하고자 본 연구를 시행 하였다. 방법 : 한국산 잡견 14마리중 7마리에는 oleic acid 0.07ml/kg를 정주해 성인성 호흡곤란증후군을 유발하고, 나머지 7마리에는 자가혈병을 이용해 급성 폐동맥색전증을 유발한 후 PEEP 수준을 0, 5, 8, 12, 15 cm$H_2O$로 증가시켜가며 환기 및 혈역학의 제지표를 측정하였다. 결과: 1) PEEP수준의 증가에 따른 환기 및 혈역학의 변화 ARDS군에서 PEEP수준의 상승에 따라 동맥혈 산소분압및 동맥혈 이산화탄소분압은 증가하였고, 생리적단락과 심박출량은 감소하였다 (p<0.05). 급성 폐동맥색전증군에서도 PEEP수준의 상승에 따라 생리적단락 및 심박출량은 감소하였고, 동맥혈 산소분압 및 동맥혈 이산화탄소분압은 증가하였다 (p<0.05). PEEP수준 1 cm$H_2O$ 상승에 따른 변화로 심박출량의 감소는 급성 폐동맥색전증군에서 ARDS 군에 비해 유의하게 컸고, 동맥혈 산소분압, 동맥혈 이산화탄소분압, 생리적단락 및 폐혈관저항의 변화는 두군간에 유의한 차이가 없었다. 2) 산소운반과 총정적유순도 ARDS군에서 총정적유순도와 산소운반은 PEEP 적용후 증가해 5 cm$H_2O$에서 가장 컸으며 (p<0.05), 급성 폐동맥색전증군에서는 PEEP 적용후 총정적유순도와 산소운반이 감소하였다(p<0.05). 양군 모두 산소운반이 최대인 PEEP 수준에서 총정적유순도도 최대치를 기록하였다. ARDS군에서 산소운반의 변화와 총정적유순도의 변화사이에는 유의한 상관관계가 있었고 (r=0.86, p<0.01), 급성 폐동맥색전증군에서도 산소운반의 변화와 총정적유순도의 변화사이에 약한 상관관계가 있었다(r=0.60, p<0.01). 결론 : 이상의 결과로 ARDS와 급성 폐동맥색전증에서 PEEP의 적용시 산소운반을 최대로 유지하기 위한 PEEP수준의 결정에 총정적유순도가 유용한 지표로 이용될 수 있을것으로 생각된다.

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유역특성에 의한 합성단위도의 유도에 관한 연구 (Derivation of the Synthetic Unit Hydrograph Based on the Watershed Characteristics)

  • 서승덕
    • 한국농공학회지
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    • 제17권1호
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    • pp.3642-3654
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    • 1975
  • The purpose of this thesis is to derive a unit hydrograph which may be applied to the ungaged watershed area from the relations between directly measurable unitgraph properties such as peak discharge(qp), time to peak discharge (Tp), and lag time (Lg) and watershed characteristics such as river length(L) from the given station to the upstream limits of the watershed area in km, river length from station to centroid of gravity of the watershed area in km (Lca), and main stream slope in meter per km (S). Other procedure based on routing a time-area diagram through catchment storage named Instantaneous Unit Hydrograph(IUH). Dimensionless unitgraph also analysed in brief. The basic data (1969 to 1973) used in these studies are 9 recording level gages and rating curves, 41 rain gages and pluviographs, and 40 observed unitgraphs through the 9 sub watersheds in Nak Oong River basin. The results summarized in these studies are as follows; 1. Time in hour from start of rise to peak rate (Tp) generally occured at the position of 0.3Tb (time base of hydrograph) with some indication of higher values for larger watershed. The base flow is comparelatively higher than the other small watershed area. 2. Te losses from rainfall were divided into initial loss and continuing loss. Initial loss may be defined as that portion of storm rainfall which is intercepted by vegetation, held in deppression storage or infiltrated at a high rate early in the storm and continuing loss is defined as the loss which continues at a constant rate throughout the duration of the storm after the initial loss has been satisfied. Tis continuing loss approximates the nearly constant rate of infiltration (${\Phi}$-index method). The loss rate from this analysis was estimated 50 Per cent to the rainfall excess approximately during the surface runoff occured. 3. Stream slope seems approximate, as is usual, to consider the mainstreamonly, not giving any specific consideration to tributary. It is desirable to develop a single measure of slope that is representative of the who1e stream. The mean slope of channel increment in 1 meter per 200 meters and 1 meter per 1400 meters were defined at Gazang and Jindong respectively. It is considered that the slopes are low slightly in the light of other river studies. Flood concentration rate might slightly be low in the Nak Dong river basin. 4. It found that the watershed lag (Lg, hrs) could be expressed by Lg=0.253 (L.Lca)0.4171 The product L.Lca is a measure of the size and shape of the watershed. For the logarithms, the correlation coefficient for Lg was 0.97 which defined that Lg is closely related with the watershed characteristics, L and Lca. 5. Expression for basin might be expected to take form containing theslope as {{{{ { L}_{g }=0.545 {( { L. { L}_{ca } } over { SQRT {s} } ) }^{0.346 } }}}} For the logarithms, the correlation coefficient for Lg was 0.97 which defined that Lg is closely related with the basin characteristics too. It should be needed to take care of analysis which relating to the mean slopes 6. Peak discharge per unit area of unitgraph for standard duration tr, ㎥/sec/$\textrm{km}^2$, was given by qp=10-0.52-0.0184Lg with a indication of lower values for watershed contrary to the higher lag time. For the logarithms, the correlation coefficient qp was 0.998 which defined high sign ificance. The peak discharge of the unitgraph for an area could therefore be expected to take the from Qp=qp. A(㎥/sec). 7. Using the unitgraph parameter Lg, the base length of the unitgraph, in days, was adopted as {{{{ {T}_{b } =0.73+2.073( { { L}_{g } } over {24 } )}}}} with high significant correlation coefficient, 0.92. The constant of the above equation are fixed by the procedure used to separate base flow from direct runoff. 8. The width W75 of the unitgraph at discharge equal to 75 per cent of the peak discharge, in hours and the width W50 at discharge equal to 50 Per cent of the peak discharge in hours, can be estimated from {{{{ { W}_{75 }= { 1.61} over { { q}_{b } ^{1.05 } } }}}} and {{{{ { W}_{50 }= { 2.5} over { { q}_{b } ^{1.05 } } }}}} respectively. This provides supplementary guide for sketching the unitgraph. 9. Above equations define the three factors necessary to construct the unitgraph for duration tr. For the duration tR, the lag is LgR=Lg+0.2(tR-tr) and this modified lag, LgRis used in qp and Tb It the tr happens to be equal to or close to tR, further assume qpR=qp. 10. Triangular hydrograph is a dimensionless unitgraph prepared from the 40 unitgraphs. The equation is shown as {{{{ { q}_{p } = { K.A.Q} over { { T}_{p } } }}}} or {{{{ { q}_{p } = { 0.21A.Q} over { { T}_{p } } }}}} The constant 0.21 is defined to Nak Dong River basin. 11. The base length of the time-area diagram for the IUH routing is {{{{C=0.9 {( { L. { L}_{ca } } over { SQRT { s} } ) }^{1/3 } }}}}. Correlation coefficient for C was 0.983 which defined a high significance. The base length of the T-AD was set to equal the time from the midpoint of rain fall excess to the point of contraflexure. The constant K, derived in this studies is K=8.32+0.0213 {{{{ { L} over { SQRT { s} } }}}} with correlation coefficient, 0.964. 12. In the light of the results analysed in these studies, average errors in the peak discharge of the Synthetic unitgraph, Triangular unitgraph, and IUH were estimated as 2.2, 7.7 and 6.4 per cent respectively to the peak of observed average unitgraph. Each ordinate of the Synthetic unitgraph was approached closely to the observed one.

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Tomotherapy MVCT와 Linac CBCT의 Imaging dose 비교평가 (Compare to Evaluate the Imaging dose of MVCT and CBCT)

  • 윤보름;홍미란;안종호;송기원
    • 대한방사선치료학회지
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    • 제26권1호
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    • pp.83-89
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    • 2014
  • 목 적 : 토모테라피(Tomotherapy)와 선형가속기(Linac)를 이용한 세기조절방사선치료(IMRT) 시 환자의 정확한 위치잡이를 위해 매일 시행되는 MVCT와 CBCT의 imaging dose를 비교 평가해보고자 한다. 대상 및 방법 : 인체 모형 팬텀(Anderson rando Phantom, USA)을 Head, Thorax, pelvis의 3부위로 분류하여 촬영 부위의 중심에 $0.5{\times}0.5cm2$. 크기로 자른 GafChromic EBT3 film을 팬텀의 표면의 상, 하, 좌, 우와 팬텀의 표면에서 2cm깊이의 상, 하, 좌, 우, 중심에 위치시킨 뒤 토모테라피(Hi Art)와 Novalis Tx의 OBI를 이용하여 surface dose와 inner dose를 각각 3회씩 반복 측정한다. 측정 된 film은 RIP version6.0을 이용하여 값을 산출한 뒤 일원분산분석법을 이용하여 선량의 평균값을 산출한다. 결 과 : 인체모형팬텀을 이용하여 MVCT와 CBCT를 시행한 결과 MVCT inner dose의 측정값은 head에서 $15.43cGy{\pm}6.05$, thorax에서 $16.62cGy{\pm}3.08$, pelvis에서 $16.81cGy{\pm}5.24$로 나타났으며, CBCT inner dose는 head에서 $13.28{\pm}3.68$, thorax에서 $13.66{\pm}4.04$, pelvis에서 $15.52{\pm}3.52$의 값을 나타냈다. Surface dose의 측정 값은 MVCT 시행 시 head에서 $11.64{\pm}4.05$, thorax에서 $12.16{\pm}4.38$, pelvis에서 $12.05{\pm}2.71$로 나타났으며, CBCT의 경우 head에서 $14.59{\pm}3.51$, thorax에서 $15.82{\pm}2.89$, pelvis에서 $17.48{\pm}2.80$을 나타내었다. 결 론 : Inner dose의 경우 kV energy를 사용하는 CBCT보다 MV energy를 사용하는 MVCT에서 head에서 1.16배, thorax에서 1.22배, pelvis에 서 1.08배 높게 나타났으며, Surface dose의 경우 MVCT보다는 CBCT의 head에서 1.25배, thorax에서 1.30배, pelvis에서 1.45배 높게 측정되었다. Imaging dose는 치료 선량에 비해 작은 양이지만 daily로 시행되는 만큼 정상조직에 일정부분 영향을 미칠 것으로 생각된다. 하지만 IMRT치료를 위해서는 영상유도를 통한 IGRT가 반드시 병행되어 치료계획과 실제치료간 오차를 최소화하여야 한다. 따라서 환자가 받는 imaging dose를 최소화하기 위해서는 치료계획 시 Imaging dose를 고려하여 치료계획을 수립하거나 MVCT 촬영 시 Scan 범위를 최소화하여 시행해야 될 것으로 사료된다.

농촌(農村) 주민(住民)들의 의료필요도(醫療必要度)에 관(關)한 연구(硏究) (A Study Concerning Health Needs in Rural Korea)

  • 이성관;김두희;정종학;정극수;박상빈;최정헌;홍순호;라진훈
    • Journal of Preventive Medicine and Public Health
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    • 제7권1호
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    • pp.29-94
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    • 1974
  • Today most developed countries provide modern medical care for most of the population. The rural area is the more neglected area in the medical and health field. In public health, the philosophy is that medical care for in maintenance of health is a basic right of man; it should not be discriminated against racial, environmental or financial situations. The deficiency of the medical care system, cultural bias, economic development, and ignorance of the residents about health care brought about the shortage of medical personnel and facilities on the rural areas. Moreover, medical students and physicians have been taught less about rural health care than about urban health care. Medical care, therefore, is insufficient in terms of health care personnel/and facilities in rural areas. Under such a situation, there is growing concern about the health problems among the rural population. The findings presented in this report are useful measures of the major health problems and even more important, as a guide to planning for improved medical care systems. It is hoped that findings from this study will be useful to those responsible for improving the delivery of health service for the rural population. Objectives: -to determine the health status of the residents in the rural areas. -to assess the rural population's needs in terms of health and medical care. -to make recommendations concerning improvement in the delivery of health and medical care for the rural population. Procedures: For the sampling design, the ideal would be to sample according to the proportion of the composition age-groups. As the health problems would be different by group, the sample was divided into 10 different age-groups. If the sample were allocated by proportion of composition of each age group, some age groups would be too small to estimate the health problem. The sample size of each age-group population was 100 people/age-groups. Personal interviews were conducted by specially trained medical students. The interviews dealt at length with current health status, medical care problems, utilization of medical services, medical cost paid for medical care and attitudes toward health. In addition, more information was gained from the public health field, including environmental sanitation, maternal and child health, family planning, tuberculosis control, and dental health. The sample Sample size was one fourth of total population: 1,438 The aged 10-14 years showed the largest number of 254 and the aged under one year was the smallest number of 81. Participation in examination Examination sessions usually were held in the morning every Tuesday, Wenesday, and Thursday for 3 hours at each session at the Namchun Health station. In general, the rate of participation in medical examination was low especially in ages between 10-19 years old. The highest rate of participation among are groups was the under one year age-group by 100 percent. The lowest use rate as low as 3% of those in the age-groups 10-19 years who are attending junior and senior high school in Taegu city so the time was not convenient for them to recieve examinations. Among the over 20 years old group, the rate of participation of female was higher than that of males. The results are as follows: A. Publie health problems Population: The number of pre-school age group who required child health was 724, among them infants numbered 96. Number of eligible women aged 15-44 years was 1,279, and women with husband who need maternal health numbered 700. The age-group of 65 years or older was 201 needed more health care and 65 of them had disabilities. (Table 2). Environmental sanitation: Seventy-nine percent of the residents relied upon well water as a primary source of dringking water. Ninety-three percent of the drinking water supply was rated as unfited quality for drinking. More than 90% of latrines were unhygienic, in structure design and sanitation (Table 15). Maternal and child health: Maternal health Average number of pregnancies of eligible women was 4 times. There was almost no pre- and post-natal care. Pregnancy wastage Still births was 33 per 1,000 live births. Spontaneous abortion was 156 per 1,000 live births. Induced abortion was 137 per 1,000 live births. Delivery condition More than 90 percent of deliveries were conducted at home. Attendants at last delivery were laymen by 76% and delivery without attendants was 14%. The rate of non-sterilized scissors as an instrument used to cut the umbilical cord was as high as 54% and of sickles was 14%. The rate of difficult delivery counted for 3%. Maternal death rate estimates about 35 per 10,000 live births. Child health Consultation rate for child health was almost non existant. In general, vaccination rate of children was low; vaccination rates for children aged 0-5 years with BCG and small pox were 34 and 28 percent respectively. The rate of vaccination with DPT and Polio were 23 and 25% respectively but the rate of the complete three injections were as low as 5 and 3% respectively. The number of dead children was 280 per 1,000 living children. Infants death rate was 45 per 1,000 live births (Table 16), Family planning: Approval rate of married women for family planning was as high as 86%. The rate of experiences of contraception in the past was 51%. The current rate of contraception was 37%. Willingness to use contraception in the future was as high as 86% (Table 17). Tuberculosis control: Number of registration patients at the health center currently was 25. The number indicates one eighth of estimate number of tuberculosis in the area. Number of discharged cases in the past accounted for 79 which showed 50% of active cases when discharged time. Rate of complete treatment among reasons of discharge in the past as low as 28%. There needs to be a follow up observation of the discharged cases (Table 18). Dental problems: More than 50% of the total population have at least one or more dental problems. (Table 19) B. Medical care problems Incidence rate: 1. In one month Incidence rate of medical care problems during one month was 19.6 percent. Among these health problems which required rest at home were 11.8 percent. The estimated number of patients in the total population is 1,206. The health problems reported most frequently in interviews during one month are: GI trouble, respiratory disease, neuralgia, skin disease, and communicable disease-in that order, The rate of health problems by age groups was highest in the 1-4 age group and in the 60 years or over age group, the lowest rate was the 10-14 year age group. In general, 0-29 year age group except the 1-4 year age group was low incidence rate. After 30 years old the rate of health problems increases gradually with aging. Eighty-three percent of health problems that occured during one month were solved by primary medical care procedures. Seventeen percent of health problems needed secondary care. Days rested at home because of illness during one month were 0.7 days per interviewee and 8days per patient and it accounts for 2,161 days for the total productive population in the area. (Table 20) 2. In a year The incidence rate of medical care problems during a year was 74.8%, among them health problems which required rest at home was 37 percent. Estimated number of patients in the total population during a year was 4,600. The health problems that occured most frequently among the interviewees during a year were: Cold (30%), GI trouble (18), respiratory disease (11), anemia (10), diarrhea (10), neuralgia (10), parasite disease (9), ENT (7), skin (7), headache (7), trauma (4), communicable disease (3), and circulatory disease (3) -in that order. The rate of health problems by age groups was highest in the infants group, thereafter the rate decreased gradually until the age 15-19 year age group which showed the lowest, and then the rate increased gradually with aging. Eighty-seven percent of health problems during a year were solved by primary medical care. Thirteen percent of them needed secondary medical care procedures. Days rested at home because of illness during a year were 16 days per interviewee and 44 days per patient and it accounted for 57,335 days lost among productive age group in the area (Table 21). Among those given medical examination, the conditions observed most frequently were respiratory disease, GI trouble, parasite disease, neuralgia, skin disease, trauma, tuberculosis, anemia, chronic obstructive lung disease, eye disorders-in that order (Table 22). The main health problems required secondary medical care are as fellows: (previous page). Utilization of medical care (treatment) The rate of treatment by various medical facilities for all health problems during one month was 73 percent. The rate of receiving of medical care of those who have health problems which required rest at home was 52% while the rate of those who have health problems which did not required rest was 61 percent (Table 23). The rate of receiving of medical care for all health problems during a year was 67 percent. The rate of receiving of medical care of those who have health problems which required rest at home was 82 percent while the rate of those who have health problems which did not required rest was as low as 53 percent (Table 24). Types of medical facilitied used were as follows: Hospital and clinics: 32-35% Herb clinics: 9-10% Drugstore: 53-58% Hospitalization Rate of hospitalization was 1.7% and the estimate number of hospitalizations among the total population during a year will be 107 persons (Table 25). Medical cost: Average medical cost per person during one month and a year were 171 and 2,800 won respectively. Average medical cost per patient during one month and a year were 1,109 and 3,740 won respectively. Average cost per household during a year was 15,800 won (Table 26, 27). Solution measures for health and medical care problems in rural area: A. Health problems which could be solved by paramedical workers such as nurses, midwives and aid nurses etc. are as follows: 1. Improvement of environmental sanitation 2. MCH except medical care problems 3. Family planning except surgical intervention 4. Tuberculosis control except diagnosis and prescription 5. Dental care except operational intervention 6. Health education for residents for improvement of utilization of medical facilities and early diagnosis etc. B. Medical care problems 1. Eighty-five percent of health problems could be solved by primary care procedures by general practitioners. 2. Fifteen percent of health problems need secondary medical procedures by a specialist. C. Medical cost Concidering the economic situation in rural area the amount of 2,062 won per residents during a year will be burdensome, so financial assistance is needed gorvernment to solve health and medical care problems for rural people.

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