• Journal of KIISE:Information Networking
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• v.29 no.6
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• pp.749-754
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• 2002

In this paper, We propose a titrate allocation method in which the bitrates of the videos for the lower layer are restricted by constant titrate, but those of the higher layer are assigned to have the uniform picture quality, for the multiplexing system of multiple spatial scalable video sources. We first find an approximated model of distortion-bitrate for the MPEG-2 spatial scalable video coding system, then we obtain the bitrate for each source to have constant distortion ratio among the sources by using the approximated model parameters for real-time simple implementation. It is shown by simulation that the proposed bandwidth allocation can keep almost constant picture Quality ratio among the sources of higher layer.

• Journal of the Korean Association of Geographic Information Studies
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• v.13 no.2
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• pp.1-10
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• 2010

The purpose of this research is to establish location models for public service facilities considering efficiency as well as equity. And it suggests the method of spatial evaluation reflected the real world. Finally, this research is applied to the analysis on the optimum location of cultural facilities in Geumsan. This research adopts the expert survey for site selection factors and applys AHP for the relative weights. Secondly, it assorts the urban area by satellite image for the spatial analysis on the real world. Next, it adopts the Location-Allocation Model for the location evaluation and embodies the unequal population distribution according to the location model establishment. Finally, it conducts the more specific spatial analysis reflected the real world through the two methods applications; both spatial analysis(Grid analysis) and Network analysis.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.12 no.6
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• pp.22-28
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• 2013

This study aims to propose the location selection method of car-sharing services in Daejeon Metropolitan city. In order to select locations for car-sharing, Daejoen area was divided in $500m{\times}500m$ cell size using GIS Arc/Info 10, and input factors which may affect car-sharing service were determined, and then each input factor was standardized for analysis. The weight for each input factor was determined through experts' survey and index of goodness of fit was estimated in each cell ($500m{\times}500m$ size) using AHP method. Also, This study proposed the method to select 30 service facility location using Location-allocation Model in Network Analysis module. The proposed method for the location selection of car-sharing service in this study can be used for preliminary data for initial car-sharing introduction. Henceforward, appropriate demand forecasting and economic evaluation for the location selection of car-sharing service are needed for the further study.

• Journal of the Korean Society of Hazard Mitigation
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• v.2 no.3 s.6
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• pp.109-117
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• 2002

An analysis to allocate storage space for sediment accumulation during the economic life of the reservoir is required in the planning or design of a reservoir. This analysis has been the most difficult and tedious aspect to deal with reservoir sedimentation because of the interaction between the various parameters related to the hydraulics of flow, reservoir operating policy, inflowing sediment load. The approach to analyzing spatial distribution of deposits has relied on empirical methods, all of which required a great deal of simplification from the actual physical phenomena. For the purpose of this study, reservoir sedimentation rate computed by Empirical Area Reduction Method is compared with measuring rate along the Soyang-gang Dam. As a conclusion, reservoir sedimentation rate can be estimated exactly by Empirical Area Reduction Method.

• Journal of The Korea Institute of Healthcare Architecture
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• v.11 no.3
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• pp.19-30
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• 2005

As the population of the elderly increases drastically year by year in Korea, the more welfare centers for them are greatly needed. There are, however, a small number of public geriatric hospitals currently available. And a limited number of private-founded geriatric centers are under construction throughout the country. And the systematic standards for the spacial composition and departmental area distribution for them are not satisfactorily set up yet. The analytical study of the space composition and area distribution of the hospitals in question shows that publicly-shared spaces, such as day-room and lobby, are much more useful for their communications than private spaces, such as shut-in living rooms. It also shows that in-yards or in-gardens which are located in the center of the wards are very helpful for their comfortable long-term hospitalization. The shared spaces are recommended to be in sight of and within earshot of their caretakers. In relation with out-patient departments, the programs for the local elderly residents, such as the day-care center and recreation facilities are recommended to be prepared for their physical care and emotional treatment at a time by municipal welfare centers rather than by private institutions. The analytic study carried out in terms of departmental area distributions reveals that the areas for the wards are generally wider and areas for out-patient/or diagnosis departments are relatively narrower than those in the general hospitals. These area distributions seem to have come from the considerations of their relatively long-term staying in the centers than general hospitals and their mental stability as well.

• Journal of The Korea Institute of Healthcare Architecture
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• v.23 no.4
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• pp.27-36
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• 2017

Purpose: The characteristics of spatial allocation planning in dentistry through examining the dental hospitals in Korea and comparison between them are necessary for the development of planning of the dental healthcare system. This study has been started to provide basic informations such as zoning, allocation distribution, and space configuration for the planning of dental hospital architecture. Methods: Literature review of dental care departments and investigation on current status of dental hospital in Korea have been conducted. The spatial allocation and space configuration of eleven dental hospitals have been analyzed. Results: The result of this study can be summarized in three points. The first one is that dental hospitals in Korea are consisted with eight to eleven dental care departments and they are divided with the horizontal allocation type with three to four departments in a floor for the spatial communication or the vertical allocation type with a department in each floor for the independent space. The second one is that oral medicine and oral maxillofacial radiology are located near the main entrance, orthodontics and pedodontic dentistry in lower level, prosthodontics in upper level, and conservative dentistry and periodontics have no specific spatial consideration. The third one is that the factors to consider the allocation planning are zoning for examination & diagnosis, basic practice, adolescence, surgery, circulations for patient, dentist, staff, different access for department like as easy access for reception and pedodontic dentistry, enclosure space for prosthodontics and surgery, frequency of visit and treatment care time, and change of treatment concept from treatment department to disease control corporative practice. Implications: This study is the starting point for the research of spatial configuration in dentistry and it is necessary to analyze the architectural planning to develop the dental healthcare system.

• Proceedings of the Korean Vacuum Society Conference
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• 2013.02a
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• pp.558-558
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• 2013

유도 결합 플라즈마는 반도체 및 디스플레이 플라즈마 공정에서 널리 사용되고 있으며, 이때 대표적인 플라즈마 변수인, 플라즈마 밀도, 전자 온도 그리고 그들의 공간 균일도는 공정결과 및 소자 품질에 직접적인 영향을 준다. 하지만, 기존의 통상적인 유도 결합 플라즈마에서의 안테나 구조는 용량성 결합에 의한 이온 에너지 손실, 불 균일한 플라즈마 밀도 분포 그리고 높은 안테나 전압을 야기한다. 이러한 한계를 극복하기 위하여 SMP, 다중 전력 인가 대칭형 안테나를 고안하여 플라즈마 밀도의 공간 균일도 개선하였다. 구조적으로 두 개의 안테나가 수평면 상에 일정한 간격으로 중첩되며, 전기적으로 다중 전력을 인가하여 안테나 임피던스를 낮추고 안테나 전압을 방위각상 균등 배분하여 용량성 결합 문제를 저감함으로서 플라즈마의 회전방향 균일도를 개선할 수 있었다.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.40 no.3
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• pp.28-40
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• 2011

본 논문에서는 열섬완화대책에 관한 수치목표를 설정했을 때, 각 지역에 필요 대기 열부하 삭감량과 구체기술의 필요투입량 파악을 목적으로, 대기 열부하 삭감 포텐셜과 목표설정의 관계에 대해 검토하였다. 먼저, mesoscale 기상모델에 의해 과거회귀로부터 구체적인 수치목표를 구한 결과, 열대야 DH의 필요저감량은 대판평야(大阪平野)부의 공간평균으로 $10.7^{\circ}C{\cdot}h$, 인구 중첩평균으로 $12.5^{\circ}C{\cdot}h$가 산출되었다. 또한, 필요열부하 삭감량은 대판평야부(大阪平野部) 전체에서 일률삭감시에는 공간평균으로 11.5 $W/m^2$, 인구 중첩평균으로 12.0 $W/m^2$인 한편, 열부하 삭감 포텐셜이 큰 도심부를 중심으로 삭감을 행한 지역배분조건에서는 개략적으로 같은 양의 열부하 삭감으로 목표를 달성함을 나타내었다. 대판부(大阪府)내의 어떤 시구를 대상으로, 논문에서 뽑은 각종 열섬완화대책을 도입률 100%로 실시한 경우, 목표를 달성한 시구가 존재함을 나타내었다.

• Journal of Environmental Impact Assessment
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• v.30 no.5
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• pp.297-304
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• 2021

The environmental impact assessment(EIA) project in Korea has undergone changes and revisions in various evaluation items for about 30 years after the introduction of the Environmental Conservation Act (1997). However, despite the importance of land use evaluation items under the current EIA Act, there are insufficient studies to consider. Therefore, this study focused on the land-use evaluation items based on the EIA guidelines, reviewed 90 of the evaluation documents and consultation documents, and tried to suggest implications and supplementary points forthe domestic EIA land-use evaluation items. As a result, the paradigm was changing from land efficiency centered on development in the past to land efficiency centered on the natural environment and resource conservation. However, in spite of the manual for fitting the paradigm change, opinions on the conservation of the natural environment are still being drawn in the consultation document, so it needs improvement. Two improvements in the impact assessment process suggested in this study are the establishment of standardized spatial data and a quantitative impact and reduction method evaluation tool based on it. In particular, there is a need for a plan evaluation tool for land use arrangement and distribution that can solve the needs of minimizing damage to the natural environment and securing green space and a green network.

• Spatial Information Research
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• v.20 no.2
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• pp.93-103
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• 2012

Recently metropolitan cities pursue multi centric urban spatial structure for sustainable development and efficient urban management. Thus, this study calculated population potential using data on population distributed among road nodes for the last 50 years, and based on the results. We measured the spatial variability of the multi centric structure of Busan Metropolitan City. According to the results, the multi centralization process has been continued up to recently in Busan Metropolitan City. As population potential is concentrated on sub centers, Hadan, Gupo and Haeundae areas were playing an increasingly powerful role as the center of the respective district, and Sasang and Dongrae had been losing their role as the center of their respective districts since 2000 and 1990, respectively. Additionally, in all the multi centric districts except Haeundae was observed the increase of oblongity, which is the change of spatial structure in an unbalanced way toward a specific area or direction.