• 항공우주기술
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• 제2권1호
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• pp.190-196
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• 2003

2002년 7월부터 2003년 11월까지 항우연에서 직수신한 MODIS 자료를 이용하여 한반도 여러 지역의 top-of-atmosphere(TOA) radiance 및 그 계절변동을 분석하였다. MODIS의 공간분해능과 한반도 특성에 맞게 광범위하게 분포하는 동일한 특성을 갖는 지역을 선택하여 농경지역, 수림지역, 담수지역, 해수지역, 도시지역, 습지, 대기영역(구름)을 선택하였다. 한반도의 선택된 지역에 대해 TOA radiance값이 지표특성에 의존적임을 알 수 있었다. 또한 MOIDS 관측이 일반적으로 알려져 있는 지구복사특성을 잘 묘사하고 있음을 이해하게 되었다. 본 저자들은 이 연구가 초다중분광(hyperspectral) 자료해석에 기초정보를 제공하기를 기대한다.

• 한국물환경학회지
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• 제22권4호
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• pp.605-613
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• 2006

Discharge characteristics of non-point source pollutant and load amount of the discharge in the urban area were investigated in the Pungyeongjeong-stream basin and the Yongbong-stream basin in this present study. The land use of the studied basins were divided into paddy field, industrial complex area, combined sewage system, separate sewer system and point sources discharge. The descriptive statistics on the event mean concentrations (EMCs) of non-point pollutants by the the land use showed in the range of 4.43-32.28 mg/L for BOD and 8.27~56.17 mg/L for COD. The highest concentration was shown from the combined sewage system. The EMC of SS at the paddy field in the Pungyeongjeong-stream basin showed the highest range with the values ~ from 35.76 to 358.86 mg/L, which might have been influenced by a levee construction in the adjacent of the area. The relatively high concentration values of 4.43~32.28 mg/L and 1.617.13 mg/L emerged from TN and TP,respectively, at the discharge points of the both stream basins.

• 한국물환경학회지
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• 제25권3호
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• pp.394-403
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• 2009

A total of 52 sampling sites were selected in the stream network of the upper Paldang watershed (e.g. Kyonan, Gapyeong, Jojong, Chengmi, Bockha, Yanghwa and Heuk streams). Over the time period of April 2007-February 2008, 1820 samples were collected and analyzed for physico-chemical variables of the upper watershed in order to investigate spatio-temporal water quality variation in particular the relationship with land use. Although temporal variations of water quality in each stream were similar and were significantly influenced by flow, spatial variations in each stream varied as physico-chemical characteristics of upper watershed. As a result of regression analysis, Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Nitrogen (T-N), and Total phosphorus (T-P) concentration were the most significantly and positively associated with people population density. It is necessary to manage not only water quality but also land use of upper watershed and flow flux.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2003년도 춘계학술발표회 논문집
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• pp.171-180
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• 2003

The merging of different scales or multi-sensor image data is becoming a widely used procedure of the complementary nature of various data sets. Ideally, the merging method should not distort the characteristics of the high-spatial and high-spectral resolution data used. To present an effective merging method for survey of reclaimed land, this paper compares the results of Intensity Hue Saturation (IHS), Principal Component Analysis (PCA), Color Normalized(CN) and High Pass Filter(HPF) methods used to merge the information contents of the high-resolution (6.6 m) Electro-Optical Camera (EOC) panchromatic image of the first Korea Multi-Purpose Satellite 1 (KOMPSAT-1) and the multi-spectral Moderate Resolution Imaging Spectroradiometer (MODIS) image data. The comparison is made by visual evaluation of three-color combination images of IHS, PCA, CN and HPF results based on spatial and spectral characteristics. The use of a contrasted EOC panchromatic image as a substitute for intensity in merged images with MODIS bands 1, 2 and 3 was found to be particularly effective in this study.

• 농촌계획
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• 제13권4호
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• pp.9-22
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• 2007

With the establishment of municipalities, public interest in small towns in Korea has been on the rise. To initiate an effective study and suggest subsequent policies for small towns, it is necessary to analyze and discuss substantive issues based on specific conditions of these small towns. The primary objective of this paper is to categorize small towns into types and to analyze the peculiarities and differences of their internal factors. The focus of this research is to determine the general characteristics of the classified towns and to suggest specific revitalization and specialized studies about them. In the main analysis of this paper, 39 small towns are divided into sets according to urban rank, conditions of location, and size of the population in the central site. Furthermore, distinctions of the divided towns are analyzed using three constituents for urban organization, including populations, activities, and facilities/land. From the research results, it was determined that there is a difference between small town types, according to population, land cost, and urban activities, based upon the urban rank and size of the population in the central site. Therefore, this paper concludes it is necessary to conduct further studies on time series analysis regarding the peculiarity changes of the types, and to complement the variables for future related studies.

• 한국관개배수논문집
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• 제10권1호
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• pp.33-43
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• 2003

This study was carried out to obtain the scientific data as high quality rice produced at reclaimed tidal land. Thus we reviewed related papers and reports and, collected and analyzed 90 soil samples at 9 reclaimed tidal lands in Korea. The results were s

• 토지주택연구
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• 제3권1호
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• pp.69-78
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• 2012

본 연구에서는 토지적성평가 평가결과의 정확성을 향상시킬 수 있는 방안을 제시하였다. 이를 위해 지표값 측정 및 임계치 설정을 중심으로 현 제도에서 적용하고 있는 평가방법과 이를 개선할 수 있는 방안을 검토하고, 사례지역을 대상으로 두 가지 방법을 적용함으로써 기존의 방법에 비해 지니는 효과를 파악하였다. 구체적인 분석과정은 1) 공간적 입지특성에 대한 거리측정시 저항을 고려한 분석, 2) 보전적성값 산정시 물리적 특성지표에 적용되는 귀속도 함수의 임계치 설정에 따른 평가결과를 측정하였다. 평가결과 첫째, 저항을 고려한 측정방법이 단순한 직선거리에 의한 방법에 비해 하천이나 임야 등 접근성이 떨어지는 지역적 특성을 보다 잘 반영하고 있는 것으로 나타났다. 둘째, 대상지역의 최고값을 최대임계치로 설정하는 현재의 방법이 지표의 측정값 분포를 고려한 임계치 설정 때보다 상대적으로 평가절하된 점수값을 도출할 수 있음을 예측할 수 있었다. 마지막으로 인공위성영상자료를 평가결과에 중첩시켜 보았을 때 본 연구의 방법에 의한 적성등급이 현황과 보다 잘 부합하는 것으로 나타났다. 본 연구에서 제시한 평가방법은 토지적성평가 결과의 정확성을 향상시켜 준다는 점에서 의의가 크다. 더불어 그간 제도의 시행과정에서 나타난 문제점--평가단위의 문제, 평가절차상의 문제, 기초자료 정비의 문제 등--이 보완된다면 국토 및 도시정책 수립시 이를 효과적으로 지원할 수 있는 공간의사결정지원체계(SDSS)로서도 활용될 수 있을 것이다.

• 토지주택연구
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• 제13권4호
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• pp.73-89
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• 2022

코로나19의 확산으로 공원의 역할이 강조되고 있다. 사회적 거리두기를 비롯한 방역지침 하에 사람들은 안전하게 머물 곳으로 공원을 찾고 있다. 이러한 변화에 맞추어 공원은 물리적, 위치적 특성에 따라 팬데믹 적응 방안으로서 연구될 필요가 있다. 본 연구는 접근성과 통행기능을 가지는 선형공원의 잠재력을 주변 토지이용 특성에 따라 분석하고자 하였다. 대상지는 경의선 숲길 공원의 연남동 구간부터 염리동 구간까지로 설정하였으며, 집계구 경계와 토지이용 특성을 기준으로 네 개의 구간으로 나누었다. 총 생활인구 수를 종속변수로, 코로나19를 포함한 외부 활동에 영향을 미치는 요인들을 독립변수로 설정하여 구간별 다중회귀분석을 실시하였다. 분석 결과는 다음과 같다. 첫째, 상권과 선형공원의 상호작용이 다양할수록 팬데믹 영향이 크게 작용하였다. 둘째, 다양한 상업시설이 밀집할수록 계절성보다 단기적 날씨변화에 민감하게 반응하였다. 이에 본 연구는 주변 토지이용 특성에 따라 선형공원의 이용에 차이가 있음을 시사한다. 나아가 선형공원에 도시의 위기를 극복하고 녹지 접근 형평성을 높일 수단으로 잠재력이 있음을 밝힌다.

• 한국환경과학회지
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• 제14권11호
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• pp.1057-1062
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• 2005

The present study investigated runoff characteristics of non-point pollutants and discharge load amount according to the land utilization in Yeinam river basin. The land utilization of target basin was divided into paddy field, dry field, forest, residential area and composition area. The study on the runoff characteristics of non-point pollutants by rainfall-runoff process showed that COD, SS and T-P had the first-flushing effect with relatively high concentration in early-stage of the rainfall-runoff process, but the T-P revealed similar runoff characteristics. Event Mean Concentration(EMC) of BOD and COD according to the land utilization revealed the range of $3.11\~15.50mg/L$ and $3.37\~33.42mg/L$, and the highest concentration of EMC corresponding to BOD and COD was detected in the paddy field. The EMC of SS showed $1.7\~305.02mg/L$ and it's highest concentration was found in the dry field. The EMC of T-N and T-P represented the highest concentration in the paddy field and dry field with range of $0.91\~8.76mg/L$ and $0.02\~0.44mg/L$.

• 수산경영론집
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• 제36권1호
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• pp.81-101
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• 2005

This article is to estimate the fishing frequency function in Korean recreational fishery with respect to socio-economic characteristics of anglers. First, the study described the characteristics of the entire angler population on the view points of 9 socio-economic variables. And then, the study divided the total angler population into three groups of in-land, sea, and mixed angler populations in order to investigate the differences in their characteristics. The study could confirm the existence of differences in regions, size of regions, and educational levels between the in - land and the sea angler populations by testing heterogeneity in the frequency table. The fishing frequency function is estimated using Poisson regression model in order to accomodate the count data(non-negative discrete random variable) aspects of the fishing frequency. However, the model specification error is found due to overdispersion of data. The model exhibits the lack of goodness of fit. The negative binomial regression model is adopted to cure the overdispersion of the data as an alternative estimation methodology. Finally, the study can confirm overdispersion does not exist in the model any more and the goodness of fit improved significantly to the reasonable level. The results of estimation of fishing frequency population modeled by the negative binomial regression models are following. The three variables of region, sex, and education have effects on the decision making process of fishing frequency in the case of in-land recreation fishery. On the other hand, the three variables of sex, age, and marriage status do the same job in the case of sea angler population. Among the left-over variables, both income and use of Internet variables now affect on the process in mixed angler population. Finally, the results of whole angler population show that all of the previous variables are proven to be statistically significant due to the summation of data with all three sub-groups of angler population.