http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
공동주택 슬래브 두께변화에 따른 공사비 증가 산정 평가- 바닥충격음 법제화 시행에 따른 표준바닥구조를 중심으로 -
이원열,정상민,신덕 한국건축시공학회 2005 한국건축시공학회지 Vol.5 No.2
This study is to evaluate on the increased cost of construction according to the depth change of concrete slabs in apartment building. When we increased the depth of concrete slab from 150mm to 180, 210mm, the qualitative and cost of construction were calculated by the high-rise type, the unit-size type. As a result of this study, in 32 Pyong type, increment of construction cost rate appeared by 5.1% in case of increase from slab 150mm to 180mm, and 10.0% in case of increase from slab 150mm to 210mm. In 46 Pyong type, Increment of construction cost rate appeared by 5.7% in case of increase from slab 150mm to 180mm, and 10.2% in case of increase from slab 150mm to 210mm. In 55 Pyong type, Increment of construction cost rate appeared by 2.4% in case of increase from slab 150mm to 180mm, and 8.9% in case of increase from slab 150mm to 210mm.
방음터널 단면형상에 따른 소음저감 특성 평가 : 터널 내부소음을 중심으로
이원열,김하근,오양기,주문기 대한건축학회 2004 대한건축학회논문집 Vol.20 No.2
It seems inevitable for residential buildings to be high-rise and allocated near traffic roads due to the crowdedness in urban areas. Acoustic environments in those areas have been seriously deteriorated by the increase of traffic vehicles. But sound barriers have a limitation in controlling noise due to diffraction noise from sound barriers. Hence sound barrier is not effective to protect the high-rise apartment from traffic noise. This work aims at evaluating characteristics of noise reduction according to the tunnel section shapes by using 1/5 scale model. We carried out a number of field measurements for 1/5 scale model of noise barrier tunnels with various sectional shapes. The results were as follows 1) The level difference was ranged from 0㏈ to 1.2㏈ according to the opening in the ceiling 2) The level difference was ranged from 0.4㏈ to 2.3㏈ when sound-absorbing materials were increased up to 45% of all surface areas. 3) There was generally good agreement between prediction results and the measurement results.
핸드오프 호의 분류를 이용한 2-레벨 자원 예약 및 호 수락 제어 방식
이원열,장성식,변태영,한기준,Lee, Won-Yeoul,Jang, Seong-Sik,Byun, Tae-Young,Han, Ki-Jun 대한전자공학회 2001 電子工學會論文誌-TC (Telecommunications) Vol.38 No.9
대부분의 핸드오프 셰어 기법들은 셀에 핸드오프를 위한 자원을 미리 예약하여 적절한 수준의 QoS를 제공할 수 있도록 하고 있다. 미리 예약된 자원은 오직 핸드오프만을 위해 사용되는데 예약 자원의 크기를 적절히 정하지 못하면 상당한 망 자원의 낭비를 초래하게 된다. 이러한 문제를 해결하고자 본 논문에서는 이동 단말들의 경로별 이동 발생 빈도를 기준으로 핸드오프 호의 종류를 2가지로 분류하여 차별적으로 자원 예약을 수행하는 2-레벨 자원 예약 방식과 핸드오프의 종류에 따라 예약 자원을 차별적으로 운용할 수 있는 호 수락 제어 방식을 제안한다. 본 논문에서는 제안한 2레벨 자원 예약 방식과 호 수락 제어의 효용성 검증을 위해 기존의 핸드오프 제어 방식과의 성능 비교 실험을 한 결과 본 논문의 방식이 사용자 QoS를 저하시키지 않고 망 자원을 효율적으로 이용할 수 있음을 보였다. Most handoff control schemes try to offer the negotiated QoS by resource reservation for handoff calls. However, it is very difficult to determine the optimal amount of reservation resource for the handoff calls, and sometimes a considerable waste of network resource may be caused. In order to solve this problem, we propose a 2-level resource reservation and call admission control scheme. In our scheme, handoffs are classified into two types (primary and secondary) based on how often they occur and are dealt with in different ways. Simulation results show that our scheme may allow more efficient utilization of network resource without degrading QoS comparing with the existing with legacy handoff control scheme.
이원열,한무영,정상민,신덕,이철헌 한국건축시공학회 2005 한국건축시공학회지 Vol.5 No.4
Nowadays, a source of all water, which has been spent by a lot of people, is the rainwater. The rainwater is directly relating human being' life. According to how to use rainwater, human being' life is abundant or poor. Due to the lack of underground filtration quantity, the water circulation of the city is discontinued and the underground ecosystem is destroyed.This study suggest that the unused underground space of building and temporary structure can be used into rainwater storage tank in the facility to use rainwater. Moreover, in this study, while the building is constructed, It is showed that the water used in construction can be replaced in the rainwater.