• Title, Summary, Keyword: 운동장

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Present State of Turf Management of School Playgrounds in Gyeonggi Province of Korea (경기도내 천연잔디 학교 운동장 잔디관리 현황)

  • Han, Sang Wook;Soh, Ho Seob;Won, Seon Yi;Ju, Young Cheoul
    • Weed & Turfgrass Science
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    • v.4 no.4
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    • pp.405-412
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    • 2015
  • Forty schools having natural turf playgrounds were investigated by on-spot investigation and oral interviews with relevant school officials to find out basic information on turfgrass management practices of school playgrounds in Gyeonggi province. Average area of playground was $3,890m^2$ per school and $12m^2$ per student. Ninety five percent of turf playgrounds were managed by school staff and ninety percent of schools spent less than 5 million won per year for turf management. The difficulties in turfgrass management were considered as a major challenge for the schools, followed by turfgrass management cost. Among the management practices, school officials pointed out weed management as the most difficult work, followed by irrigation. The average number of fertilization and mowing was 2 and 6 times per year, respectively. About the half of playgrounds were irrigated only when there was wilting symptom. Zoysiagrass was the most popular choice for the school playgrounds and only three school playgrounds were established with pop-up irrigation system. Fourteen school playgrounds had good turf quality but the rest of school playgrounds had inadequate turf quality requiring minor or full renovation.

Soccer Game Analysis I : Extraction of Soccer Players' ground traces using Image Mosaic (축구 경기 분석 I : 영상 모자익을 통한 축구 선수의 운동장 궤적 추출)

  • Kim, Tae-One;Hong, Ki-Sang
    • Journal of the Korean Institute of Telematics and Electronics S
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    • v.36S no.1
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    • pp.51-59
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    • 1999
  • In this paper we propose the technique for tracking players and a ball and for obtaining players' ground traces using image mosaic in general soccer sequences. Here, general soccer sequences mean the case that there is no extreme zoom-in or zoom-out of TV camera. Obtaining player's ground traces requires that the following three main problems be solved. There main problems: (1) ground field extraction (2) player and ball tracking and team indentification (3) player positioning. The region of ground field is extracted on the basis of color information. Players are tracked by template matching and Kalman filtering. Occlusion reasoning between overlapped players in done by color histogram back-projection. To find the location of a player, a ground model is constructed and transformation between the input images and the field model is computed using four or more feature points. But, when feature points extracted are insufficient, image-based mosaic technique is applied. By this image-to-model transformation, the traces of players on the ground model can be determined. We tested our method on real TV soccer sequence and the experimental results are given.

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An Investigation of Natural Lawn Condition on School Grounds and the Possibility of Revegetation on It's Surroundings (잔디운동장 훼손 현황과 풀을 이용한 도시 학교 운동장 주변의 녹화 가능성)

  • Seo, Byung-Key
    • Asian Journal of Turfgrass Science
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    • v.22 no.1
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    • pp.57-64
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    • 2008
  • This study was carried out to investigate the deterioration rate and conditions of natural lawn play grounds from 71 schools in Daejeon metropolitan city. Also, we investigated the grasses and wild flowers of 33 families and 101 species on five additional school grounds. One year after planting in 71 schools from 2002 to 2004, we found out that the school lawn grounds coverage were deteriorated up to 51% in elementary schools, 76% in middle schools, and 42% in high schools. There are 45 species on the two school grounds located in mountain areas, 20 species on the three grounds located in downtown areas. There are 20 species in Compositae family, 17 species in Gramineae, 7 species in Polygonaceae, and 7 species in Leguminosae, 6 species in Caryophyllaceae, five species in Cruciferae, and 4 species in Cyperaceae.

Effects of Raising System on the Reproductive and Weaning Performances in Replacing Gilts (후보모돈의 실내.외 사육방식이 번식 및 이유성적에 미치는 영향)

  • Kim, G.W.;Ok, Y.S.;Kim, S.E.
    • Journal of Animal Environmental Science
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    • v.15 no.1
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    • pp.1-8
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    • 2009
  • This study was conducted to analyze the effects of sow breeding environment on the reproduction in the first litter in a large-sized hog farm, located in Dangjin-gun, Chungnam from July 1st, 2007 to June 30th, 2008 and provide basic information to improve the sow productivity in a family farming sows. The results obtained were as follows; 1. The gestation periods were proved to be similar without significant differences between indoor and outdoor breeding grounds, The average of farrowing rate was 91.91%, and 92.54% farrowing rate of out-door ground breeding sows was slightly greater than 91.57% of group-housed sows, but there was no significance between two groups. 2. The average of total litter size and the number of born alive per litter were 9.81 and 9.02, respectively. The number of total number was 0.98 and the number of born alive per litter was 1.18 in the outdoor-ground breeding sows, which was significantly greater than group-housed sows(p<0.001). 3. The number(rate) of piglets stillborn was 0.22(2.10%) from the outdoor-ground breeding sows was significantly greater, compared with 0.33(3.53%) from group-housed sows(p<0.01). The number of piglets culled was 0.23(2.27%) and 0.26(2.77%), in the out-door ground breeding sows and in group-housed sows, respectively and it was not significantly similar between two groups. And, the number of mummies was 0.21(2.1%) and 0.28(2.29%), in the out-door ground breeding sows and in group-housed sows, respectively, which showed no significance. 4. The weaning number in the playground breeding sows was 9.48 and it was significantly greater than that in the group-housed sows(p<0.001). The average of weaned age was observed to be 22.91 days. The weaned age in the out-door ground breeding sows was 22.39 days, and it was significantly smaller than that in group-housed sows(p<0.001). The breeding rate for the weaning of pigs was satisfactory as 96.82%, but there was no significant difference between two groups.

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Effects of Production Performance, Immunity and Egg Quality by Raising on Exercise Yard in Laying Hens (산란계 운동장 사육이 생산성, 면역성 및 계란의 품질에 미치는 영향)

  • Kim, Ki Soo;Lee, Suk Kyung;Choi, Young Sun;Ha, Chang Ho;Kim, Won Ho
    • Korean Journal of Poultry Science
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    • v.40 no.2
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    • pp.97-103
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    • 2013
  • The present study examined effects of production performance, immune activity and egg quality by raising on exercise yard in laying Hens, the results of which could be used as baseline data to enhance animal welfare and the safety of livestock products. A total of 90 Hy-line-Brown laying hens of 13 weeks old were used in the experiment for 38 weeks. The cage group (Cage group) was raised in a cage, where an area of $0.084m^2$ was assigned to two hens, while hens in the exercise yard $1.1m^2$ group ($1.1m^2$ group) was assigned to a combination of a chicken house ($0.11m^2$) and a exercise yard ($1.1m^2$) per a hen. Hens in the exercise yard $2.2m^2$ group ($2.2m^2$ group) was assigned to a combination of a chicken house ($0.11m^2$) and a exercise yard ($2.2m^2$) per a hen. Treatment was replicated 3 times with ten birds per replication. Ten birds were arranged according to randomized block design. While initial egg production rate was significantly higher in the Cage group, $1.1m^2$ group exhibited a slightly higher rate in the mid- and late-stage of the experiment, although the difference was not statistically significant. Exercise yard treatment groups exhibited a higher feed intake rate than the Cage group up until the hens were 39 weeks old (P<0.05), but the difference dissipated from that age on. The age at first egg in the exercise yard treatment groups was 16 days later than that for the Cage group (P<0.05), although differences in the quality of the eggs were not observed. The results of immune activity test showed that IgA in the exercise yard treatment groups was significantly higher than that in the Cage group (P<0.05). IgG, IgM, and corticosterone were also higher in the exercise yard treatment groups. The soil in exercise yard increased of organic matter and decreased of cation exchange capacity (CEC) in raised hens. In sum, raising hens in a exercise yard raise style decreased the rate of initial egg production, which was followed by a slight increase during the latter part of the experiment. The exercise yard raise hens' immune activity was heightened.

현상설계 - 안산시종합운동장

  • Jang, Seok-Ung
    • Korean Architects
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    • no.1
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    • pp.124-126
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    • 1997
  • 안산시는 시민을 위한 사회, 문화적 기반시설의 확충으로 사회체육활동 공간과 지역 주민의 공동체 의식을 확립할 수 있는 장으로 시민건강 증진을 위한 종합운동장 건립을 추진, 현상설계경기를 실시하여 지난 96년 10월16일 아도무건축(장석웅)안을 당선작으로 선정, 발표했다. 가작으로는 공간건축(정종영)안과 유신건축(김지덕)+제일건축(정원심)안이 선정됐다. 본지에서는 당선작과 가작 중 공간건축안을 게재한다.

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Comparison of Thermal Effects of Different School Ground Surface Materials - A Case of Yooljeon Elementary School- (학교운동장 피복물질 간의 온열효과 비교 - 율전초등학교를 대상으로 -)

  • LIM, Joong-Bin;YU, Jinhang;LEE, Ju-Yeol;LEE, Kyoo-Seock
    • Journal of the Korean Association of Geographic Information Studies
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    • v.18 no.2
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    • pp.28-44
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    • 2015
  • Granite soil has been used traditionally as a school playground surface. Natural turf has also been used in some schools. Recently artificial turf has come into common use instead of granite soil or natural turf. Artificial turf playgrounds are used at 174 schools in Seoul, Korea. More than 3,500 artificial turf fields are installed in the United States. Because of the increase of artificial turf usage, there are many studies about the estimation of artificial turf effects to environment. Compared with artificial turf material effects such as characterization of substances released from material, and recognition of volatility of heavy metal into the surrounding environment - air or the percolating rainwater -, less studies for thermal effects of artificial turf playground have been done. Especially, the corresponding studies in Korea are few. Thus, the purpose of this research is to compare the thermal effects of artificial turf on school playground between natural turf and granite soil. In this study, air temperature and Predicted Mean Vote (PMV) were compared in three scenarios by Computational Fluid Dynamics (CFD) model. Additionally, the results were validated through a field measurement. Air temperature decreasing effects by natural turf are greater than those by artificial turf and granite soil at 14:30 on 20th, July 2011. It shows the same decreasing effects at 23:30. However, the difference is less than that of daytime. PMV differences between natural turf and the other two surface covers are large at daytime while those are much less at nighttime. Consequently, air temperature and PMV of artificial turf are the highest among three school playground surface pavements.

Explosive Demolition of Special Structure of Soongeui Complex Stadium (숭의종합운동장 특수구조물 발파해체)

  • Suk, Chul-Gi;Park, Hoon;Kim, Nae-Hoi;Song, Young-Suk;Jung, Woo-Jin;Han, Dong-Hun
    • Explosives and Blasting
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    • v.28 no.2
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    • pp.108-118
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    • 2010
  • Soongeui complex stadium is a reinforced concrete frame structure composed of columns, slabs and beams. The stadium, however, is also a special structure because it has a tall tower of electronic display board and slabs inside its own structure which is different from the structures that had been demolished using blasting by then. Explosive demolition for the stadium was carried out from the left-hand side of the outfield stand to the right considering 2 rows of columns supporting the stand as a blasting unit. An overturning demolition method was applied to the tower of electronic display board. Water bags that played the role of multipurpose protection were applied to control the dust. As a result, the demolition project of the special structure of Soongeui complex stadium was judged to be a great success.

A Critical Review on Regenerating a Place's Economic Value through Landscape Restructuring: The Case of Dongdaemun Stadium (경관 재구조화에 의한 장소의 경제적 가치 재생에 대한 비판적 검토 -동대문운동장의 사례-)

  • Chung, Hee-Sun
    • Journal of the Korean Geographical Society
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    • v.44 no.2
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    • pp.161-175
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    • 2009
  • Dongdaemun Stadium was the nation's leading modem sports facilities built in 1926 by Japanese colonists. It hosted a number of the nation's sports matches and cultural performances, filled with cultural and historic significance as a birthplace of Korea's sports. As the facility was aging, however, its functions became limited. With the so-called "restoration" of Cheonggye Stream, the stadium was reduced to a flea market, no longer used for its originally intended purposes. The Seoul Metropolitan Government demolished the stadium under the plan to develop the district into a tourism cluster dedicated to the design and fashion industries. This study takes Dongdaemun Stadium as an example to explain underlying meanings of capitalist restructuring of landscape which entails removal of modern cultural relics and redevelopment projects. Although Dongdaemun Stadium was not used in the way it had been designated to be used, it still had a value as a diachronic and synchronic record for the city. The rationale that the stadium should be tom down and reinvented as tourist attraction to reap huge financial benefits illustrates that the city government's development ideology gravitated towards public works projects. This approach may harm a place's genuine disposition or essence and create an artificially-induced placeness, undermining its historio-cultural values.