• 한국농공학회논문집
• /
• 제55권6호
• /
• pp.145-154
• /
• 2013

Recently, damage occurrence by wind erosion has been increasing in society. In times past, such problems only took place in desert area ; however, in recent years, the wind erosion problem is spreading out to agricultural land. Wind erosion in agricultural land can cause loss of loam soils, the disturbance of the photosynthesis of the crop fields and serious economic losses. To overcome the mentioned problems, installation of windbreak fence can be recommended which function as disturbing strong wind and wind erosion. However, there is still no proper guideline to install the windbreak fence and the installation used to rely on the intuition of the workers due to the lack of related studies. Therefore, this study measured the aerodynamic resistance of screens of the windbreak fence using the apparatus for testing screens. The apparatus for testing screens was designed to measure pressure loss around the screen. Measured pressure loss by wall friction compensated for pressure loss to calculate the aerodynamic resistance of screens. The result of pressure loss by regression analysis derived the aerodynamic coefficient of Darcy-Forchheimer equation and power law equation. The aerodynamic resistance was constant regardless of the overlapped shape when the screen was overlapped into several layers. Increasing the number of layers of the screen, internal resistance increased significantly more, and pressure loss caused by the screen also increased linearly when the wind speed was certain conditions, but permeability had no tendency. In the future, the results of this study will be applied to the computational fluid dynamics simulation. The simulation models will be also validated in advance by wind tunnel experiments. It will provide standard of a design for constructing windbreak fence.

• 한국실내디자인학회논문집
• /
• 제20권3호
• /
• pp.259-266
• /
• 2011

Today, construction fence screens which were understood simply as structures of separating people from the dangers of construction sites have evolved into landmarks to enhance the images of Cities. Now, construction fence screens should have the function as landmarks stimulating people's sensibility through providing aesthetic values as well as the function of protecting people from the dangers of fields of construction. For this reason, this study tried 1) to show the relationships among these 4 classifications. is 4 realms of Human Beings - Cultural - Ecological - Digital in the expression methods of the construction fence screens of Seoul and 2) to simplify the characteristic elements of construction fence screens by way of extracting with Ecology, Installation Art, Symbolic, Commercial Expression. This study examined whether or not the construction fence screens of Seoul were playing the role as landmarks stimulating people's sensibility with sustainable improvement to the environment of Seoul as public design structures, by investigating some of the construction fence screens of Seoul. Also through analyzing the diversity of expression methods of the construction fence screens of other local governments as well as those of Seoul, we hope that they will be the public structures for enhancing the images of Cities.

• 한국가구학회지
• /
• 제20권1호
• /
• pp.21-30
• /
• 2009

This research is conducted on temporary street furniture, which is one of the significant factors that comprise the street landscape in modem cities. The primary purpose of this research is to present the guidance on direction of planning by examining the design and installation types of construction and screen fences usually established at construction sites for buildings, roads, parks and etc. The results are as follows: 1. The construction and screen fences at construction sites of urban areas used to be a mere tentative facility to prevent noise and safety accidents but have now incremented their roles to serve not only as a functional but also as an aesthetic element with a city view and harmonization with other elements taken into consideration. In particular, it is noticeable that, based on its unique feature of tentativeness, its role has developed to serve as street furniture that adds variability to the modem city. 2. There are two different types of screen fences: blackout type and transparent type. The transparent screen turns out to be used a lot at the construction site of building a skyscraper or differentiated building in downtown city area or in places where there are buildings of similar types and shapes located along the street in the vicinity of the construction site. 3. The actual cases of adopting the tentative construction and screen fences all at the same time as a single unit have been found in historically and culturally significant architectures with the screen design used to demonstrate the view after completion of construction or the characteristics of the architecture.

• 한국산학기술학회논문지
• /
• 제16권2호
• /
• pp.1370-1374
• /
• 2015

보안구역 내의 외곽울타리지역의 경비체제를 인적경비에서 과학화경비로 전환함에 따라 안정된 보안설비의 적정관리를 위한 조명개선이 요구되어진다. 본 논문에서는 효율적인 외곽 감시를 수행할 수 있도록 경비과학화시스템에 적합한 등기구 선정과 균일한 조도환경을 조성하기 위하여 조명설비의 부적절한 적용으로 모니터에 눈부심이 심한 울타리 지역을 선정하여 LED 등의 용량을 변화시키며 등기구의 각도, 등주간의 거리, 등기구의 취부높이 등의 조정에 따른 현장 모의실험으로 감시모니터에 발생하는 눈부심을 해소시키고자 하였다. 또한 모의실험 조건에 따른 CCTV 화면분석과 조도값을 바탕으로 공항 외곽지역과 유사한 조건으로 조명 모델링하고 소비전력이 다른 LED 광원을 이용한 시뮬레이션 실시로 공항 외곽보안설비의 적정운영 위한 조명설계안을 제시하고자 한다.

• 건축역사연구
• /
• 제14권3호
• /
• pp.53-76
• /
• 2005

Through a field study of the folk houses, 'Closed ㄱㄴ Type' in Goyang-si, Gyonggj-do, focused on the dweller's life by the method of ethnographic interview, observation, and physical survey. L and opposite L type of inner and outer buildings form a closed inner court, and innermost backyard for woman is enclosed by fence. Form and space of the house contains dweller's traditional life. Outer space of a front gate becomes semiprivate space, for thrashing and piling up harvest and raising vegetables and pigs. Confucius principle does not fully dominate dweller's life of ancestral rite at Daecheong floor, and separation of man's and woman's quarter. Superstitious worship activities took place for lord of site and house. In everyday life, Anbang, inner main room, is assigned for parent's quarter instead of woman's quarter, and Geornbang, next room, was for son's family. Anbang has symbolic meaning for a place of deathbed. House contains agricultural activities, crop harvesting, thrashing, putting into storage, hulling rice, and keeping grain near kitchen. At present, rooms are needed more; sheds are made into rooms, rooms are enlarged toward outside, half outside space like Daechong floor becomes interior space by sash screen. And modern facilities of kitchen and bathroom are equipped for convenience. At the end, meaning and generative principle of those forms are discovered.

• 한국산업융합학회 논문집
• /
• 제23권6_2호
• /
• pp.1075-1080
• /
• 2020

The control on temperature and humidity on the cow-house is essential to assure production efficiency and the control on disease of cows. Fog system and screen fence are typical methods to drop the temperature inside of cow-house during the summer season. This study focused on the change in temperature and humidity under the condition of application of those methods. The results indicate that the installation of atomizer and insulation curtain cause decrease in temperature and increase in humidity. However, Using both of methods at the same time doesn't make any additional meaningful effects on temperature and humidity.

• 한국철도학회논문집
• /
• 제10권1호
• /
• pp.57-66
• /
• 2007

1974. 8. 15 SeoulMetro, beginning with the first electric railway established at six cities, so it is managing mass transportation of traffic. Especially, in case of seoul, It is managing that from one to eight lines, 286.9km, 265 stations have installed and now it is carrying about 5.5million of passengers everyday, and 2,000million passengers a year. So accident is increasing from the station every year. For this measure, SeoulMetro prepares safety fence for passengers crash but, as suicides or people who watch the accident took place, for at the bottom of passengers crash protection, PSD installing is needed. Even though, PSD is managing ATO section but, in controlling SeoulMetro, one to four lines sections are (ATS, ATC)section. Between as ATS, ATC section, ATO section, subway gate and PSD must have opened and crossed always at the time. And the interlock control corrosion protection gate, managing skills with installation, method, using in history, apply to 10rail cars one train sets, and maximum applying 2224% sections of passengers congested that consideration is to be needed. So 2004, SeoulMetro improved technology and basie design of PSD at ATS section. Based on this, from 2005.4 to 2006.6, using subway 2lines per 12stations set the model installation(full type 11stations, half type 1station) After installing in case of success, it is going about to suggest that effective analysis and hereafter subject.

• 헤리티지:역사와 과학
• /
• 제56권2호
• /
• pp.172-203
• /
• 2023

<청담도(淸潭圖)>는 겸재 정선(謙齋 鄭敾, 1676~1759)이 영조 32년(1756)에 삼각산(三角山) 청담(淸潭) 지역을 유람하고 그린 병풍도(屛風圖) 형식의 진경산수화(眞境山水畫)로 본 연구를 통해 발굴되었다. 와운루(卧雲樓)와 농월루(弄月樓)로 구성된 청담별업(淸潭別業)은 노론 낙론계(洛論系) 문회와 백악시단(白嶽詩壇)의 시회가 열린 당대 문화예술 활동의 거점이며, 정선과 그림의 주문자 홍상한(洪象漢, 1701~1769)의 연결점이 된다. <청담도>는 1756년 가을비가 내릴 당시, 정선이 그의 제자 김희성(金喜誠, 1723~1769)과 청담에 막 도착하여 홍상한과 만났을 때를 회상하면서 그린 그림이다. 인수봉(仁壽峰)부터 동구(洞口)까지 굽이쳐 흐르는 골짜기를 주안에 두고 그려졌으며, 청담 지역의 전경을 담으면서도 동(洞)의 유래가 되는 경물(景物) 청담(淸潭)을 강조하는 중의적인 화제를 사용하였다. 과감한 쇄찰(刷擦)과 습윤한 피마준(披麻皴), 부드러운 미점(米點)의 표현, 세밀한 필선 등은 정선 노년의 절정에 이른 원숙함을 보여준다. 특히, 암산(巖山)과 토산(土山)의 대비와 개수의 대칭을 고려하여 음양(陰陽)의 조화를 꾀한 점은 『주역(周易)』에 능통했던 정선이 유람의 최종단계에서 보였던 특유의 진경술(眞境術)로 보았다. 어유봉의 「청담동부기(淸潭洞府記)」는 정선이 청담의 진경을 파악하고 별업정원에 설정된 주요 경물의 물성(物性)을 이해하는 것에 영향을 주었다. 정선이 현장과 차별되도록 그린 별업정원의 특징으로는 수구막이 바위를 변용하고 과장하여 수구를 억눌렀고, 비보림(裨補林)을 치밀하게 조성하여 별업을 가렸으며, 특정 경물의 기능이 발휘되도록 새로운 물체를 창안하였다. 또한, 두 그루 나무를 기울여 대문처럼 정원을 닫고 있으며, 외원과 내원의 경계가 되는 인공의 조산대(造山帶)를 긴 담장처럼 견고하게 조성하여 내청룡과 내백호를 연결하였다. 이는 정선이 청담별업의 부족한 입지를 명당으로 만들기 위해 구사한 비보염승술(裨補厭勝術)로, 풍수적인 묘책으로 고안된 진경술의 일단으로 해석되며, 현실에서는 이루기 어렵지만 그림으로는 가능했던 이상적인 전통조경의 도상학적 구현을 잘 보여준다.