• Korean Institute of Interior Design Journal
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• v.15 no.1 s.54
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• pp.106-112
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• 2006

Buildings undergo changes by various factors according as pass at time. Due to that social requests and issues form one common sense of value and this would influence the architect's design intention. In fact, the form and function of buildings have coped with transition of the common sense of value by each times. Hospital architecture is also changed in function, scale and technology since, Kwanghyewon which was the first western style hospital in Korea was established in 1885. It is changing that the social needs for hospital which was a basic function of healing to laying emphasis on the function of precaution. According to this, the change of hospital spaces means that it can promote healing environment which is expanded from the modern concept of isolation, accommodation and urban sanitation. These changed concepts were adopted limited areas in hospitals at first however, nowadays they are expanding to other areas. So, this is caused to make the image of the hospital. From this point of view, Entry space is an example to show the changes. This study is intended to determine the overall space structure of entry area and to classify and analyze the difference.

• Journal of the Korean Society for Railway
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• v.15 no.5
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• pp.436-441
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• 2012

Pressure waves are generated and propagate in tunnel when train enters a tunnel with high speed. Compression wave due to the entry of train head propagates along the tunnel and is reflected at tunnel exit as expansion wave. While expansion wave due to the entry of train tail propagates along the tunnel and is reflected at tunnel exit as compression wave. These pressure waves are repeatedly propagated and reflected at tunnel entrance and exit. Severe pressure change per second causes ear-discomfort for passengers in cabin and micro pressure wave around tunnel exit. It is necessary to analyze the transient pressure phenomena in tunnel qualitatively and quantitatively, because pressure change rate is considered as one of major design parameters for an optimal tunnel cross sectional area and the repeated fatigue force on car body. In this study, we developed the characteristics method analysis based on fixed mesh system and compared with the results of real train test. The results of simulation agreed with that of experiment.

• 월간 기계설비
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• s.238
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• pp.28-35
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• 2010

국토해양부(장관 정종환)는 2012년까지 연간 해외건설 수주 700억불 달성으로 세계 10대 해외건설 강국 진입 목표의 "해외건설 현황 및 활성화 방안"을 마련하여 국가 브랜드 제고를 위한 우리경제의 핵심 성장 동력으로 집중 육성키로 하고, 이를 지원하기 위해 국가적 역량을 결집키로 했다.

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2017.10a
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• pp.103-105
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• 2017

대구광역시 동구에 위치한 'A'아파트를 중심으로 진입로, 보도, 보차도, 휴게공간, 체육공간의 점토벽돌블록포장, 소형고압블록포장, 인조화강석블록포장에 대해서 발생 하자를 조사하였다. 먼저 하자분석을 위해 하자유형 및 종류를 정의하여 현장조사표를 개발하였으며, 이를 바탕으로 각 공간 및 블록종류에 따른 하자를 조사 분석하였다. 그 결과 진입로의 소형고압블록은 16.14개/$m^2$, 보도의 소형고압블록은 12.04개/$m^2$, 점토벽돌블록포장은 9.55개/$m^2$, 인조화강석블록은 3.66개/$m^2$로 나타났다. 보차도의 소형고압블록은 10.82개/$m^2$, 인조화강석블록은 2.59개/$m^2$, 휴게공간과 체육공간의 점토벽돌블록은 각각 13.64개/$m^2$, 6.02개/$m^2$개의 하자가 발생하였다. 다음으로 블록별 발생하자 종류를 살펴보면, 소형고압블록에서는 골재분리, 인조화강석블록에서는 얼룩이 가장 많았고, 점토벽돌블록은 보도에서는 침하가, 휴게공간과 체육공간에서는 얼룩의 발생량이 많았다. 마지막으로 하자발생부위별로 살펴보면 진입로, 보도, 보차도에서는 경계부의 하자가 많이 발생했으며, 휴게공간에서는 중앙부의 하자가 많이 나타났다. 반면 체육공간에서는 중앙부와 경계부의 차이가 거의 나지 않은 것으로 분석되었다.

• Journal of Korean Society of Transportation
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• v.16 no.2
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• pp.53-65
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• 1998

합류구간에 설치된 차량검지기에서 수집된 조사자료들을 이용하여 본 연구는 교통와해 발생원인과 용량감소 문제를 분석하였다. 본 연구에서는 거시적 및 미시적인 방법을 가지고 수행하였으며 거시적인 방법으로는 연결로 교통량의 상대적 비중차이를 분석하였고 미시적으로는 본선에 진입하는 차량들의 패턴을 분석하였다. 거시적인 측면에서 합류부의 교통와해는 같은 합류교통량에 대한 연결로교통량의 비중 차이레 의해 발생된다. 즉, 연결로교통량 비중이 높아질수록 교통와해 발생확률은 증가할 것이다. 또한 미시적인 측면에서는 연결로 교통량이 같을 때 본선에 진입하는 차량군의 크기 및 발생회수, 표준편차가 높아진다고 할 수 있다. 따라서 교통와해의 주요한 원인은 연결로교통량의 영향에 기인한다고 할 수 있고 이러한 영향을 감소시키기 위하여 램프미터링과 같은 고속도로 교통통제 기법이 요구된다.

• Korean Institute of Interior Design Journal
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• v.15 no.4 s.57
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• pp.37-45
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• 2006

The purpose of this study is to stand assembly the meaning and function of entry space with analysing their social and cultural characteristic. The entry space is the linkable place between inner space and out space, and that is the transition place to be experienced two opposing characteristic. Till now the entry space has not taken effect as symbol needed to the resident and observer, and that has been a tendency to shrink as the minimal sign of entrance. So thus, it is in need of studying the entry space's specific and characterizing structurally as expanded function. For the purpose, this study define newly the meaning, function and composition of entry space in an apartment building, and try to find how to reinforce a resident identity. This study propose justification that the entry space isn't boxing space minimally but enforcing symbol presented clearness of composition and vital character.

• Journal of Korean Society of Transportation
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• v.19 no.6
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• pp.119-129
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• 2001

본 연구는 국내의 화물차(이하 트럭) 특성, 도로 조건과 주행 저항이 고려된 트럭 성능 곡선 산출식의 매개변수를 추정하기 위하여 수행되었다. 이를 위해 국내 대표트럭을 선정하고 경사지 진입속도를 산출하였다. 국내 대표트럭의 선정은 자동차 등록현황 자료를 토대로 하여 트럭 중량/마력비에 대한 누적 분포를 작성하고 이 중에서 주요 차종(적재 중량 11톤 이상)의 총중량은 과적 검문소 자료로 보정하여 이루어졌다. 경사지 진입속도는 도별 평지부 직선 구간을 한 곳씩 선정하여 4차로도로와 2차로도로에서 수집되는 자료를 분석하여 산출하였다. 트럭 성능 곡선 산출식을 정립하기 위해 오르막 한계속도$(V_x)$ 산출식을 정리한 뒤 총중량(W), 엔진성능(P), 경사도(G)는 독려 변수로 k, $f_{rc}$, $f_{rv}$, $\Phi$는 매개변수로 설정하였다. 현장조사를 통해서 오르막 한계속도에 도달한 트럭의 총중량과 엔진성능, 속도, 경사도 등의 자료를 수집하여 매개변수 산출에 이용하였다. 마지막으로 추정된 매개변수를 이용하여 트럭 성능 곡선을 도출하였다.

• Journal of KIISE:Computer Systems and Theory
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• v.37 no.4
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• pp.195-204
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• 2010

Due to improved wireless communication technologies, it is possible to provide multimedia streaming service for mobile device clients like PDAs and cellphones. Wireless networks are serviced on low bandwidth channels and mobile devices work on limited hardware specifications. In these conditions, transcoding technologies are needed to adapt the media for streaming services to given mobile environments. To transcode from the source media to the target media for corresponding grades, transcoding servers perform transcoding jobs as exhausting their resources. Since various transcoding loads occur according to the target transconding grades, an effective transcoding load balancing policy is required among transcoding servers. In addition to transcoding process, servers should maintain QoS streams for mobile clients for total serviced times. It requires real-time requirements to support QoS for various mobile clients. In this paper, a new transcoding load distribution method is proposed. The proposed method can be driven for fair load balance between distributed transcoding servers. Based on estimated transcoding time, movie information and target transcoding bit-rate, it provides fair transcoding load distribution and also performs admission control to support QoS streams for mobile clients.

• The Journal of the Korea Contents Association
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• v.22 no.4
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• pp.199-206
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• 2022

As the OTT video service has grown, much attention has been paid to its impact on the traditional media market. This study explores how the OTT video service(measured as OTT subscription revenue, OTT advertising revenue, and Netflix effect) has impacts on the traditional media market(measured as pay TV subscription revenue, media advertising revenue, and broadcast advertising revenue), using the panel dataset with 50 countries from 2012 to 2020. For pay TV subscription revenue, OTT subscription revenue is positively associated with the revenue while Netflix and broadband diffusion have negative associations. For media advertising revenue, OTT advertising revenue is positively associated with the revenue while broadband diffusion has negative association. For broadcast advertising revenue, OTT advertising revenue is positively associated with the revenue while broadband diffusion has negative association.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.28 no.4
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• pp.49-63
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• 2010

This study focused on the method of separation - space organization- as one of the architectural methods that is considered by the view point of its location and arrangement of 'Byoul-seo' private garden pavilion in Honam province. As a result, the followings are conclusions; By this study, they can be found in the concept of '居敬窮理', '格物致知'. It is presumed that nature union is archived through the 'yan-sang(玩賞)' which is ultimate state of knowledge that is based on the premises of opened significance in emancipation from narrow view point in the past and cognition of value. Therefore, it is needed to know the unworldly point of space perception about the pavilion territory, furthermore to have conceptual method to distinct pavilion from the world. there are two methods in the distinct concept in this pavilion research: unworldly separation and meditative separation. It is concluded that the specific consideration of the method of separation that is applied in the Byoul-seo pavilion. And it is accomplished by the contemplation of separation method in approach and entrance of direct influence area. they could be 1) cross the hill, 2) cross over a brook, 3) lifted up in the mount, 4) penetrate the forest, and 5) narrow entrance, which could be part of location.