• 한국잡초학회지
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• 제18권4호
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• pp.364-370
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• 1998

1981 및 1992년도 우리 나라 논잡초 조사자료를 이용한 생태학적 종합우점도 분석과 GIS에 의한 분석결과에 대한 요약을 하여 보면 다음과 같다. 1. 1981년 생태학적 종합우점도 분석에 의하여 가장 우점도가 높았던 잡초는 물달개비이었으며, 이는 전국적인 논에 걸쳐 가장 발생밀도가 높은 것으로 이해되지만 GIS분석에 의한 전국지역에 걸친 발생밀도는 이와 큰 차이가 나타났다. 2. 1981년 GIS분석에 의한 일년생 광엽잡초 물달개비의 발생우점 지역으로서는 경기의 시흥, 여주지역, 충남의 당진, 예산, 아산, 공주, 청양, 부여, 논산, 천안, 금산 등이었으며, 경북지방은 점촌, 청도, 영천, 봉화, 영풍 등이 상대적으로 매우 높은 발생량을 보였다. 3. 1992년 우점도가 가장 높았던 잡초는 다년생 사초과 잡초인 올방개이었으며. GIS분석에 의한 지역별 발생밀도는 현저한 차이를 보였으며, 주로 경기남부지역과 충남 중 서부지역, 전남 남 서부지역 등이 상대적으로 발생밀도가 높았다. 4. 1992년 올방개 발생이 극심한 지역은 경기 용인, 안성, 화성, 평택, 이천, 여주 일원과 충남의 서산, 당진, 태안, 천안, 공주, 아산, 청양, 예산, 대전일원, 전북의 장수, 전남의 무안, 나주, 해남 등으로 나타났다.

• 농업과학연구
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• 제37권3호
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• pp.471-479
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• 2010

Forest roads of 16,424km have been constructed as infrastructure for efficient management of forest. The demand of forest road have been also increased steadily with SOC conception for forest management and wood production. But, accuracy verification by completion drawing of forest road needed aspects extration of geographic information to sound like forest road construction and completion drawing. However, verification for completion drawing has not ascertained. This study carried out the evaluation for position accuracy about constructed forest road in Chungcheongnam-do for evaluating horizontal position accuracy of completion drawing of forest road. In result, first of distance of completion drawing and real route designed completion drawing longer than the real route as Gongju 83m, Seosan 66m, Nonsan 27m and Dangjin 19m, respectively. Second, RMSE by point-correspondence was 11m~14.7m, buffering analysis appeared difference of 18~24m. Finally, index of shape was the similar completion and real route through 6.5~7.4 and data information of forest road corresponds to be perfect. For such reasons, the existing completion drawings have a problem that it cannot use graphic information for drawing digital map according to the regulation, and there is an urgent need for improvement to solve this problem in the process of design and construction.

• 한국환경보건학회지
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• 제39권6호
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• pp.492-504
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• 2013

Objectives: This analysis seeks to evaluate the impact of environmental health factors (EHF; e.g. hospital beds per capita, employees of medical institutions) on extreme-heat vulnerability assessment in Busan Metropolitan City during 2006-2010. Methods: According to the vulnerability concept suggested by the Intergovernmental Panel on Climate Change (IPCC), extreme-heat vulnerability is comprised of the categories of Exposure, Sensitivity, and Adaptive Capacity (including EHF). The indexes of the Exposure and Sensitivity categories indicate positive effects, while the Adaptive capacity index indicates a negative effect on extreme-heat vulnerability. Variables of each category were standardized by the re-scaling method, and then each regional relative vulnerability was computed with the vulnerability index calculation formula. Results: The extreme-heat vulnerability index (EVI) excepting EHF was much higher in urban areas than in suburban areas within the metropolitan area. When EHF was considered, the difference in the EVI between the two areas was reduced due to the increase of the Adaptive capacity index in urban areas. The low EVI in suburban areas was induced by a dominant effect of natural environmental factors (e.g. green area) within the Adaptive capacity category. Conclusions: To reduce the vulnerability to extreme heat in urban areas, which were more frequently exposed to extreme heat than others areas, public health and natural environments need to be improved in sensitive areas.

• 대한지리학회지
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• 제39권3호
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• pp.360-373
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• 2004

본 연구는 석유제품 유통기관의 판매권역을 설정하기 위한 방법론을 제시하고 설정된 판매권역별 특성을 살피고자 하였다. 이를 위해 공간적 상호작용 모델과 입지-배분모델을 적용하여 효과적으로 정유회사 하부의 지역본부 및 지사와 직영 주유소의 판매권역을 설정하는 방법론을 선정하고 판매권역별 특성을 고찰하는 것을 목적으로 한다. 정유회사의 지역본부 및 지사의 판매권역을 설정해 본 결과 경기지역본부와 같이 타 본부에 비해 유인력이 큰 공급지가 입지한 수도권의 경우 거리에 기초하여 수요지를 배분하는 입지-배분모델을 적용하고, 나머지 지역의 경우 수요지의 유출력과 공급지의 유인력을 현실적으로 반영할 수 있는 공간적 상호작용 모델을 적용하여 판매권역을 설정하는 것이 가장 합리적이었다. 또한 설정된 각 판매권역의 특성을 분석해 본 결과 판매권역 내에 포함되는 자동차대수와 인구수에 있어서 상당한 격차를 보이고 있었다. 이는 판매권역이 잠재적 수요를 기초로 하여 설정되므로, 휘발유 소비 수준의 격차가 이와 같은 판매권역간에 편차를 야기시키고 있다고 풀이할 수 있다.

• 한국병원경영학회지
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• 제16권3호
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• pp.1-18
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• 2011

In this study, population census(2005 & 2008) from Statistics Korea and the statistical data of the number of hospital beds by healthcare facilities classification from Ministry of Health and Welfare were used. For analyzing distribution of hospital beds, hospital beds were classified as acute care beds, long-term care beds and all hospital beds, which is including acute and long-term care beds. Regional areas, which are city(si), county(goon) for the study and district(gu) were reclassified as metropolitan city, city(si) and county(goon). Because there were 165 regional areas in 2005 and 2008, 84 and 81 areas were classified as metropolitan city and/or city and county, respectively. Gini index were calculated for hospital beds from each year, and Lorenz curves were drawn. The following summary presents the findings of this study. Compared to the year 2005 and 2008, the Gini index was 0.24472, and hospital bed numbers increased slightly by 0.80% than in 2005. In case of acute care beds, the Gini index was 0.23797(0.13%), and there was no big difference; however, the Gini index for long-term care beds was 0.41091, and there was a 30.25% decrease, which shows improvement to reduce disparities. It might result from an increase in long-term care beds up to 476.2%. For geographical equality of hospital beds, the Gini index and Lorenz curve, which can be compared the degree of inequality in the distribution of hospital beds reasonably and possibly show statistical data, should be used. Through this study, the distribution policy of hospital beds should be established.

• 한국콘텐츠학회논문지
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• 제11권9호
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• pp.372-383
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• 2011

본 연구의 목적은 관상동맥중재술 입원 환자의 재원일수의 변이를 규명하기 위해 중증도 보정 모형을 개발하였다. 2004~2006년 퇴원손상환자 조사자료 중 관상동맥중재술 입원 환자 1,011건을 연구대상으로 하였으며, 재원일수의 변이분석은 t검정, 분산분석을 실시하였고, 중증도 보정 재원일수 모형은 데이터마이닝 기법을 이용하였다. 개발된 다중회귀분석 모형을 이용하여 예측 재원일수를 산출하고 이를 실제 재원일수와 비교한 결과 병상규모별, 보험유형과 지역별로 재원일수의 변이가 존재하는 것으로 나타났다. 환자 특성과 중증도를 통제하고 나타난 재원일수의 변이는 공급자 요인으로 설명될 수 있는데, 진료행태나 의료자원에 대한 후속 연구가 필요한 것으로 보인다. 본 연구는 행정 데이터를 이용하여 중증도 모형을 개발하고 변이를 확인하였다는 점에서 활용의 효용성을 높이는 데 기여할 것으로 사료된다.

• Parasites, Hosts and Diseases
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• 제52권6호
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• pp.691-694
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• 2014

The purpose of this study was to conduct a survey of Dirofilaria immitis infection among stray cats in Korea using nested PCR. We included 235 stray cats (121 females and 114 males) and evaluated each for the presence of feline heartworm infection. Blood samples were collected from 135 cats in Daejeon, 50 cats in Seoul, and 50 cats from Gyeonggi-do (Province). Of the 235 DNA samples, 14 (6.0%) were positive for D. immitis. The prevalence of infection in male cats (8/114, 7.0%) tended to be higher than that in female cats (6/121, 5.0%), but the difference was not statistically significant. In each location, 8, 2, and 4 cats were positive for infection, respectively, based on DNA testing. No significant differences in the prevalence were observed among the geographic regions, although the rate of infection was higher in Gyeonggi-do (8.0%) than Daejeon (5.9%) and Seoul (4.0%). We submitted 7 of the 14 D. immitis DNA-positive samples for sequencing analysis. All samples corresponded to partial D. immitis cytochrome c oxidase subunit I gene sequences with 99% homology to the D. immitis sequence deposited in GenBank (accession no. FN391553). To the best of our knowledge, this is the first survey using nested PCR to analyze the prevalence of D. immitis in stray cats in Korea.

• Journal of Preventive Medicine and Public Health
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• 제48권6호
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• pp.301-309
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• 2015

Objectives: To investigate trends in the prevalence of allergic disease over a 9-year period. Methods: Using National Health Insurance Service (NHIS) data, the annual number of patients with allergic disease was obtained for each regional subdivisions (small cities, counties, and districts) from 2003 to 2011. Annual populations for each sub-region were obtained and used to calculate the standardized prevalence. To compare prevalence within the study period, data was standardized spatially and temporally. For standardization, demographic data was used to obtain the registered population and demographic structure for 2010, which was used to perform direct standardization of previous years. In addition, a geographic information system (GIS) was used to visualize prevalence for individual sub-regions, and allergic diseases were categorized into five groups according to prevalence. Results: The nationwide outpatient prevalence of allergic rhinitis increased approximately 2.3-fold, from 1.27% in 2003 to 2.97% in 2013, while inpatient prevalence also increased approximately 2.4-fold,. The outpatient prevalence of asthma increased 1.2-fold, and inpatient prevalence increased 1.3-fold. The outpatient prevalence of atopic dermatitis decreased approximately 12%, and inpatient prevalence decreased 5%. Conclusions: There was a large difference between prevalence estimated from actual treatment data and prevalence based on patients' self-reported data, particularly for allergic rhinitis. Prevalence must continually be calculated and trends should be analyzed for the efficient management of allergic diseases. To this end, prevalence studies using NHIS claims data may be useful.

• 대기
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• 제19권2호
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• pp.169-182
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• 2009

To improve the performance of climate and numerical models, concerns on the land-atmosphere schemes are steadily increased in recent years. For the realistic calculation of land-atmosphere interaction, a land surface information of high quality is strongly required. In this study, a new land cover map over the Korean peninsula was developed using MODIS (MODerate resolution Imaging Spectroradiometer) data. The seven phenological data set (maximum, minimum, amplitude, average, growing period, growing and shedding rate) derived from 15-day normalized difference vegetation index (NDVI) were used as a basic input data. The ISOData (Iterative Self-Organizing Data Analysis), a kind of unsupervised non-hierarchical clustering method, was applied to the seven phenological data set. After the clustering, assignment of land cover type to the each cluster was performed according to the phenological characteristics of each land cover defined by USGS (US. Geological Survey). Most of the Korean peninsula are occupied by deciduous broadleaf forest (46.5%), mixed forest (15.6%), and dryland crop (13%). Whereas, the dominant land cover types are very diverse in South-Korea: evergreen needleleaf forest (29.9%), mixed forest (26.6%), deciduous broadleaf forest (16.2%), irrigated crop (12.6%), and dryland crop (10.7%). The 38 in-situ observation data-base over South-Korea, Environment Geographic Information System and Google-earth are used in the validation of the new land cover map. In general, the new land cover map over the Korean peninsula seems to be better classified compared to the USGS land cover map, especially for the Savanna in the USGS land cover map.

• 한국작물학회지
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• 제57권3호
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• pp.296-300
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• 2012

국내산 콩과 수입콩의 판별에 NIRS를 도입함으로써 보다 빠르고 정확한 식별분석을 하고자 실험을 수행하였다. NIRS를 사용하여 400~2,500 nm 범위에서 콩 분말의 파장을 측정하였으며, 측정된 spectrum은 WINISI II program 을 이용하여 수처리와 회귀분석을 하였다. 검량식 작성을 위한 수처리는 spectrum을 1차미분 및 4 nm gap으로 조정한 것이 가장 적합하였으며, 회귀식은 변형부분최소자승회귀법(Modified partial least squares regression)이 우수하였다. MPLS 회귀분석시 원산지 판별을 위해 loading value를 국내산 콩은 '100', 수입콩은 '1'로 처리하여 검량식을 작성하고 그 적합성을 검증한 결과 factor가 10일 때 도출된 calibration equation의 상관값이 0.98, 교차검증의 상관값이 0.94를 나타내어 상관도가 높음을 알 수 있었다. 따라서 NIRS를 이용한 국내산 콩과 수입콩의 판별분석이 가능할 것으로 판단되었다.