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정.동적 하중에 의한 비압밀비배수 보강화강풍화토의 전단강도 특성
조용성,구호본,박인준,김유성,Cho, Yong-Sung,Koo, Ho-Bon,Park, Inn-Joon,Kim, You-Seong 한국지반공학회 2006 한국지반공학회논문집 Vol.22 No.7
When enforced earth is used for the retain wall and four walls, the most important thing would be how to maximize the land utilization. Accordingly, in case of enforced earth, we pile up the minimal height of earth ($20{\sim}50\;cm$) and harden the earth using a static dynamic hardening machine. In this paper, we tried to analyze and compare the stress transformation characteristics of reinforced weathered granite soil with geosynthetics when repetitive load is added to the enforced earth structure and when static load is added. The result is that the cohesion component of the strength increased greatly and the friction component decreased slightly.
대추혈(大椎穴) 및 신유혈(腎兪穴)에 대한 전침 레이저자극이 개의 혈액학적 변화와 내분비물질의 혈중농도에 미치는 영향
조용성,배춘식,Cho, Yong-seong,Bae, Chun-sik 대한수의학회 1999 大韓獸醫學會誌 Vol.39 No.5
This study was carried out (a) to investigate the variations of blood chemistry and (b) to examine the secretion trend of endocrine substances in a dog model after electroacupuncture and laser stimulation at different time period(9 to 11a.m. and 6 to 8p.m.). Two acupuncture points ; Da Zhui(GV-14) and Shen Shu(BL-23) were electroacupunctured for 20 minutes with 2Vol, 20Hz and irradiated for 5 minutes with 8,000Hz. Before stimulation and after a lapse of time(10-minutes, 30-minutes and 60-minutes) all dogs were checked the following parameters ; cortisol, ACTH, RBC, hemoglobin, hematocrit, WBC, Ca, P, SGPT, SGOT and creatinine. The results were as follow : The levels of cortisol and ACTH have been increased 10 minutes after the stimulation of the electroacupuncture and laser. The higher levels of cortisol and ACTH have been decreased to keep the normal levels from 30 minutes after the stimulation of the electroacupuncture and laser. The RBC, hemoglobin, hematocrit and WBC showed the physiological phenomena in the electroacupuncture and laser stimulation. In sero chemical analysis, calcium, phosphate, SGOT, SGPT and creatinine levels were within normal physiological ranges.
부직포를 활용한 급경사 녹화보강토공법의 적용 가능성에 관한 연구
조용성(Cho Yong-Seong),구호본(Koo Ho-Bon),이춘길(Lee Choon-Kil) 대한토목학회 2006 대한토목학회논문집 C Vol.26 No.4
선진국 진입의 길목에 있는 우리나라는 급경사면 축조 및 유지관리에 심혈을 기울이고 있으나, 급경사면 축조를 위해 철근콘크리트 옹벽이나 보강토 옹벽(블럭식, 판넬식) 등이 시용되어지고 있다. 이러한 구조체는 전면형태가 콘크리트 벽체로서 미관의 한계성과 친환경성이 부족한 상태이다. 본 연구는 녹화를 병행할 수 있는 식생토체를 형성하고 현장에서 발생된 불량토를 보강재(부직포) 감싸기(wrapping)방법을 적용한 80°의 급경사 성토체를 현장에서 직접 축조하였으며, 보강성토체에서 발생될 수 있는 수평변위, 침하량 및 법면에서 발생된 토압 등에 대한 계측을 실시하여 분석하였다. 이러한 보강성토체의 계측 및 시간경과에 따른 법면의 식생활착 등에 대한 조사결과, 향후 녹화가 가능한 급경사 보강토 구조물에 대한 적용이 가능할 것으로 판단된다. The steep slopes have been increased of new roads, industrial site development and large scale residential development. The preservation administration and steep slope construction are currently investigated by many researchers in Korea. However, concrete retaining wall or reinforced soil (i.e. Block or Pannel) are being applied for the steep slope, which results in the front face form of the structure being limited. This research investigates the method that can make up afforestation environment-friendly circumstances during the construction of steep slope structure. It is considered that steep slope reinforced structure would be possible based on the monitoring results about earth pressure, horizontal displacement and consolidation quality generated during the construction of whole constructing reinforced structure. Also, there no problems in grassy surface, drainage, and deformation in spite of rainy season after construction period and until now. So that the seeding soil layer surface reinforced soil method could be adopt for steep slope reinforced structure and others.
조용성(Yong-Seong Cho),김태균(Tae-Kyoon Kim),최동준(Dong-Jun Choi),허남호(Nam-Ho Hur),이준환(Joon-Whoan Lee) 한국정보기술학회 2013 한국정보기술학회논문지 Vol.11 No.4
In these days, the wired and wireless broadband network is becoming a common access network. The consumption of multimedia contents has rapidly increased according to increase of the smart device which is supported the function of wired/wireless communication and multimedia replay. The multimedia consumption environment is changed the broadcasting communication service market as follows; first, the content provider is changed from broadcasting service operator to anyone who has contents. Second, the importance of N-screen service is increased, for which supportis anytime anywhere services. In this paper, we proposed the design and implementation of video gateway based N-screen broadcasting platform system which is supported variety of service by cable SO (Service Operator) using HFC (Hybrid Faber and Coaxial) network as rapidly changing market environment. The proposed method has an advantage which is supported N-screen service without additional establishment of broadcasting transmission and network equipment.
조용성(Cho, Yong Seong),권오형(Kwon, O-Hyeong),최동준(Choi, Dong-Joon),허남호(Her, Namho) 한국방송·미디어공학회 2011 한국방송공학회 학술발표대회 논문집 Vol.2011 No.7
최근 유료 방송 서비스를 위한 제한수신 시스템의 적용에 있어 지적되었던 여러 문제들을 해결할 수 있는 DCAS(Downloadable Conditional Access System) 기술이 소개되었다. 또한, OpenCable과 DCAS를 기반으로 국내 디지털 케이블 방송 시스템을 위한 교환가능형 제한수신 시스템(eXchangeable CAS: XCAS) 표준이 재정되었다. 본 논문에서는 DCAS와 국내 XCAS 표준 규격을 기반으로 개발된 다운로드형 제한수신 시스템을 소개하고, 개발된 시스템의 성능 검증 결과를 제시하여 상용 유료방송 시스템에 적용하는 방안에 대해 논하고자 한다.