• 한국물환경학회지
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• 제37권3호
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• pp.157-167
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• 2021

Korea needs to develop a rational system to separate stormwater utility fee from current sewerage fee. In this study, the scenario for calculating stormwater utility fee of Bupyeong-gu was suggested and the results were considered. For this purpose, the application of stormwater utility fee overseas and current domestic system were analyzed. A three step calculating scenario considering suitable domestic situation and impervious surface area was suggested. Water, sewerage usage, and hydrant data were collected. The total amount of water and sewerage fees for land use were calculated. The sewerage fee of Bupyeong-gu for the year 2014 was 21,685,446,578 won. Assuming that 40% of this amount was the cost associated to stormwater, the result showed that the fees for residential area in third step decreased by 0.77% compared to that of the first step. For commercial area, the stormwater utility fee decreased by 36.87%. For industrial area, although the consumption of water was similar to that of commercial area, the stormwater utility fee increased by 8.35%. For green area, the fee increased by 37.46%. This study demonstrated that the calculation of actual stormwater utility fee using impervious surface map and impervious Surface Ratio Estimation Methodology developed in previous studies is feasible.

• Carbon letters
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• 제12권1호
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• pp.44-47
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• 2011

Activated carbon fibers (ACFs) were prepared from cost effective commercial textiles through stabilization, carbonization, and subsequently activation by carbon dioxide. ACFs were characterized for surface area and pore size distribution by physical adsorption of nitrogen at 77 K. ACFs were also examined for various surface characteristics by scanning electron microscopy, Fourier transform infrared spectroscopy, and CHNO elemental analyzer. The prepared ACFs exhibited good surface textural properties with well developed micro porous structure. With improvement in physical strength, the commercial textile grade acrylic precursor based ACFs developed in this study may have great utility as cost effective adsorbents in environmental remediation applications.

• 한국환경과학회지
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• 제14권12호
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• pp.1081-1085
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• 2005

This study is carried out for obtaining the basic materials for presentation of creation and desirable management of urban roadside trees through analyse the existence effect of trees on people who operate th commercial areas along the streets. Roadside tree and green areas are recognized comfort space in addition to simple planting area. Therefore various trees and flowering plants should be introduced in addition to roadside facilities for convenience. Planted roadside trees should be maintained. We will propose an method that residents plant and manage the trees and flowering plants on the two lane of one way road. However main lines more than four lane of one way have more public property beside the residents space. Therefore these should be maintained mainly by related government agencies.

• Natural Product Sciences
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• 제22권4호
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• pp.259-262
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• 2016

The content analysis of fatty acids in Perilla cultivars and commercial oils is conducted through gas chromatography with a flame ionization detector. Results show that Perilla cultivars, such as Deulsaem and Daesil, contain high amounts of ${\alpha}-linolenic$ acid (262.22 and 261.97 mg/g, respectively). Among commercial oils, Perilla oil contains a higher amount of ${\alpha}-linolenic$ acid (515.20 mg/g). Accordingly, ${\alpha}-linolenic$ acid is a major fatty acid of Perilla cultivars and oil. Therefore, Perilla cultivars could be used as a food supplement for nutritional and pharmaceutical purposes.

• Carbon letters
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• 제1권3_4호
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• pp.154-157
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• 2001

Composite adsorbents were prepared by mixing water plant sludge with phenolic resin having the ratio of 1 : 1, 1 : 2, and 1 : 3 respectively, curing from $100^{\circ}C$ to $170^{\circ}C$ under $N_2$ atmosphere, and then activating with $N_2$ at $700^{\circ}C$. Thermal property, specific surface area and morphology of the composite adsorbents as well as their precursors were measured by TGA, BET and SEM respectively. Removal efficiency of the composite adsorbents to ${NH_4}^+$ and TOC was compared with those of commercial zeolite and activated carbon. The adsorbents presented very promising TOC removal efficiency of 98%, which was identical level to that of commercial activated carbon while they displayed removal efficiency, only 32%, of ${NH_4}^+$. Therefore, this composite adsorbent considered as the alternative material of commercial activated carbon, used as an expensive removal agent of organic substances and THM in water treatment plant and it also suggested a possibility of practical application in other processes.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1999년도 추계종합학술대회 논문집
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• pp.421-425
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• 1999

As the market size of multiprocessor systems for commercial applications, parallel systems, especially cache-coherent shared-memory multiprocessors that are conventionally designed for scientific applications need to be tuned in different fashion to achieve the best performance for new application area. In this paper, indepth investigation on the memory behavior which is the primary cause for performance changes were made. We chose representative benchmarks in scientific and commercial application areas. After running execution-driven simulation for bus-based cache-coherent shared-memory multiprocessors, we experienced significant differences and conclude that the systems must be carefully and differently designed to achieve the best performance when they are built for distinct applications.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2016년도 춘계학술대회
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• pp.373-375
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• 2016

전 세계적으로 스마트 환경의 발전에 따라 데이터의 폭발적인 증가로 인해 빅 데이터의 분석이 각광을 받고 있다. 금융, 유통, 제조, 재난 등 빅 데이터의 활용 분야에서 분석 및 활용에 대한 결과 활용이 중요하게 언급되고 있다. 본 연구에서는 전자상거래 시스템에서 빅 데이터의 성숙도 조사 결과를 기반으로 Business Process에 미치는 영향을 분석하여 데이터 분석 및 이의 활용에 미치는 영향 요소를 제시하고자 한다.

• KIEAE Journal
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• 제13권5호
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• pp.17-22
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• 2013

This study aims at proposing a sound and sustainable development direction of an urban commercial district by identifying space syntactic properties, from the perspective of human ecology, of the street network in Enuengjeongi culture street as the representative commercial district of Daejeon City in Korea. The results are obtained through Angular Segment Analysis (ASA) on the street network in subject area for this study. It was found that most of the socially integrated nodes are arranged along the axis of main street in the district. However, in some of those nodes, it was investigated that the social integrative function have weakened, because open spaces as public space for the general public are occupied illegally by commercial purposes of shops and car parking. It was found that the socially isolated nodes are located at the district boundary connected to a relative narrow street, with a relatively low density of the commercial facilities. Besides, it was identified that a street width in the commercial district may be a factor affecting the social integration of a space on the basis of the openness of the space.

• Spatial Information Research
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• 제6권2호
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• pp.217-231
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• 1998

도시지역의 토지는 주변여건에 의해 그 입지적 특성이 달리 나타나고 있다. 입지적 특성은 지가 및 임대료의 차이를 발생시켰으며 이로 인해 건물에 입지하는 시설의 종류 및 규모의 차이가 발생하게 된다. 이러한 입지의 분화는 입지특성에 의해 단순히 평면적으로만 나타나는 것이 아니라 수직적 접근성에 의해 충별 분화도 나타나게 된다. 이와 같이 각각의 시설들의 입지적 특성은 단순히 지가나 임대료 둥의 경제적 특성만이 아니라 입지요소간의 상호작용 또는 시설간의 보완 및 상충작용으로 인해 발생하는 것이다. 본 연구는 현재 주거지내로 상업시설이 활발하게 확산되고 있으며 입지요소 및 시설간의 상호작용으로 그 변화가 빈번하게 일어나고 있는 압구정동 지역을 대상으로 지역의 특수성을 밝히고 시설의 입지에 영향을 미치는 요소들간의 영향력과 시설들간의 상호관계를 살펴봄으로써 상업시설의 입지특성과 상호간의 관계성을 정립하고자 하였다. 상업시설 입지에 영향을 미치는 많은 요인들과 관련된 방대한 자료를 상업시설의 입지특성분석에 효율적으로 이용하기 위해 코드체계화 하였으며 이를 ARC/INFO를 통해 분석함으로써 보다 정확한 분석을 수행할 수 있도록 하였다.

• 대한토목학회논문집
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• 제42권5호
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• pp.723-728
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• 2022

도시생활의 거점이며, 생활의 활력과 다양성을 제공하는 도시의 상업가로의 생동감은 도시 전체의 활기 및 지역 경제 활성화에 큰 영향을 미친다. 상업가로가 활성화 되었다는 것은 보행 활성화와 관계가 있는데, 보행이라는 것은 단순한 이동 행위를 넘어 주변 환경과 폭넓은 상호작용을 하기에 생활의 질과 밀접한 관계가 있다. 이 생활의 질은 '리버빌리티(살기 좋음)'로 이어진다. 상업가로의 보행활성화를 위하여 리버빌리티 요소를 도출하고 상업가로 활성화에 있어 가장 중요하고 효과적인 것이 무엇일지 우선순위를 분석하였다. 그 결과 장소성의 세부 지표인 그 자체의 분위기, 목적성을 나타내는 항목이 우선순위가 높게 나왔고, 접근성에 속한 세부 지표가 후순위로 나옴을 알 수 있었다. 상업가로의 리버빌리티를 높이기 위해서는 그 공간의 장소성을 높이는 것을 우선으로 하고, 이로 인해 방문객의 방문 횟수와 머무르는 시간 등이 늘어남에 따라 보행이 활성화 된다면 지역 전체의 활력으로까지 확장될 수 있다.