• Title/Summary/Keyword: visual damage

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A Study on Measurement Model of the Physical Complexity of Facade Design of Building on Street (경관 가이드라인 설정을 위한 가로변 건축물 외관디자인의 물리적 복합성 측정에 관한 연구)

  • 유창균;이석주;조용준
    • Journal of the Korean housing association
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    • v.14 no.1
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    • pp.87-94
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    • 2003
  • As important elements consisting of city streetscape, facade design on building is generally very significant. But without active acceptance and understanding of the concept that the building has a private objective as personal property, it is not easy to take an involvement into design as well as to establish reasonable and scientific standards of harmony. Therefore, for desirable streetscape planning, it is indispensable to know how to closely examine the visual harmony of already established buildings in each street and how to get the solutions for its realization. In this respect, this study is to try to examine and verify the feasibility of our present streetscape situation by experimental application of acceptable Y. Elesheshtawy's model(1997), an interpretation of quantitative index of street buildings by Gestalt theory, for the preparation of the foundation of institute and standards of building design which has social value in contributing to visual and spacious harmony in our street space without giving any damage to private property. From the result, I can assure the validity that the physical complexity, whose schema is socially and culturally different from our reality, is applicable to our actual streetscape in some extent.

Surgical Management of Coexisting Glaucoma and Cataract (녹내장과 백내장이 동반된 환자의 수술적 치료)

  • Cha, Soon-Cheol
    • Journal of Yeungnam Medical Science
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    • v.21 no.1
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    • pp.12-22
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    • 2004
  • The management of coincident glaucoma and cataract is not only a common clinical challenge but also an important research topic in the ophthalmic surgical field. The purpose of this article is to compare the different surgical options on the basis of their achievable postoperative intraocular pressure (IOP) control, success rates, and complication rates reported in the related literature, and to give advice on how to manage typical situations of patients with both glaucoma and cataract. Main topics were focused on indications and rationale of 3 surgical options (only cataract surgery first and later trabeculectomy, only trabeculectomy first and later cataract surgery, or simultaneous combined surgery). Modern clear corneal cataract extraction techniques resulted in a modest intermediate-term reduction of IOP and has considerably improved the success rates of combined glaucoma and cataract surgery. It also enabled future trabeculectomy to be successfully performed at a later date if necessary. Trabeculectomy alone achieved better IOP regulation than phacotrabeculectomy (combined surgery), but subsequent cataract surgery may compromise preexisting filtering bleb. Combined surgery augmented with mitomycin C achieved a lower IOP than combined surgery alone but had a higher complication rate. In conclusion, the choice of the preferred surgical method should be determined according to the target pressure, the amount of glaucomatous damage, and the grade of visual disturbance caused by the cataract. Phacotrabeculectomy with adjunctive mitomycin C offers visual improvement and achieves the best IOP lowering of all types of combined glaucoma and cataract surgery currently used but is associated with potentially sight-threatening complications.

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Mt. Yokmang Landscape Planning in Busan New Port (부산 신항만 욕망산 경관계획)

  • Kim Choong-Sik
    • Journal of the Korean Institute of Landscape Architecture
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    • v.33 no.6 s.113
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    • pp.127-139
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    • 2006
  • Mt. Yokmang landscape design awarded first in [North container terminal site furtherance construction in Busan new port], design competition sponsoring in the Korea Container Terminal Authority in 2005. Design guideline was to propose the symbol of new port and to establish landscape plan in consideration of view and geological location. Because landscape plan required establishment of restoration plan for cutting slope, Mt. Yokmang became the major object. The purpose of planning are as follows. The first purpose is to minimize existent natural environment damage, and the second, to connect with ambit and create new image. The third is to provide place of rest and interchange for local resident. Reflecting stratum structure and landscape characteristics, cutting slope consisted of [utilization slope], [presentation slope], [landscape slope], and [ecological slope]. Vegetation design applied ecological restoration method through restoration of stratum, and eve environment-friendly afforestation, planned program that can connect area with existing ecosystem. In process that decides form of the cutting slope, analyze view structure and visual exposure in various access routes, sensitivity etc. was accomplished. Also, symbolic tower(Ocean Polaris) that presents in architecture and landscaping features, night landscape planning could gain synergy effect by keeping consistence with landscape and ecological planning. Passing through final design and construction process, I expect that the Mt. Yokmang will be a new landmark in Busan new port.

Risk Assessment of Tall Buildings in Korea by comparative study of Modified RVS and IRVS system (수정 RVS와 IRVS시스템의 비교분석을 통한 국내 고층건물 테러위험도 평가)

  • Yu, Young-Su;Yoon, Sung-Won;Ju, Young-Kyu
    • Journal of Korean Association for Spatial Structures
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    • v.12 no.4
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    • pp.91-98
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    • 2012
  • As the occurrence rate of terror and hazard is increasing throughout the world, GSA, DoD, and FEMA are proceeding a study about mitigating the damage of terror. Korea is no more a safe place from the terrorist's threat, so we need to make measures against them. In this study we developed modified RVS System by revising some items to adjust the system to the domestic condition and conducted a risk assessment on several tall buildings in Korea. By using IRVS system which is developed by DHS, we also carried out the risk assessment. Comparing the results between RVS with IRVS, we performed terror risk evaluation of tall buildings. Through risk assessment of several tall buildings, we analyzed key factors of each scenarios and suggested the mean value of each items, so we would like to help the counter-terrorism in the design phase.

A literatual studies on the cataract, glaucoma, bluish glaucoma (內障, 綠風內障, 靑風內障에 대한 文獻的 考察)

  • Park, Se-bong;Ko, Woo-shin
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.12 no.1
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    • pp.254-267
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    • 1999
  • Based on the research of cataract, glaucoma, bluish glaucoma, we have abtained the following results. 1. Main etiologies of the cataract are deficiency of the liver and kidneys, main symptoms are no nebula, no pain, no tear and sometimes light blue and white vision appear. 2. Main etiologies of glaucoma are receives heat from the liver, stagnation of the liver and gall bladder etc, main symptoms are both forehead corner pull each ether, pain from eye ball to nasal septum, headache, extending pain of the eyes, sometimes red and white flower vision appear, etc. 3. main etiologies of the bluish glaucoma are melancholy, wrath, stagnation of the liver, internal damage, flaming up fire of the phlegm, deficiency of the liver, deficiency of blood, etc, main symptoms are numbness, visual field constriction, blindness, reduce of visual capacity, blue flower vision sometimes appear, etc. 4. Treatments are mainly uses nourish Um(陰) to reduce pathogenic fire, relieve stagnancy of Ki(氣) of the liver, nourish Um(陰) of the liver and kidneys, etc, acupuncture points are mostly contended arounded eyes such as BL10)(天柱), GV16(風府), LR3)(太衝), HT5)(通里) and in the case of nauses and vomitting PC6)(內關, ST36)(足三里) are included in addition to the above.

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Applicator parts hub and cannula integrated mold technology and bonding strength analysis for retinal disease treatment (망막질환 치료를 위한 어플리케이터 허브와 캐뉼러 일체화 금형기술 및 접합강도 분석)

  • Jeong-Hyeon Yu;Yong-Dae Kim;Jeong-Won Lee
    • Design & Manufacturing
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    • v.17 no.1
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    • pp.40-47
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    • 2023
  • Macular degeneration and glaucoma are representative age-related retinal diseases that rank second and third in the prevalence of retinal diseases, and are a kind of degenerative neurological disease. Irreversible visual acuity and visual field damage may occur, and the number of patients is rapidly increasing as the population ages. Since this retinal disease is a chronic disease, continuous drug treatment is required. There are various drug delivery methods for treatment, but direct injection of the drug into the intravitreal is the most effective for continuous delivery of the drug over a long period of time. In order to solidify Dexamethasone, a retinal disease treatment, and insert it into the primary intravitreal, it is important to develop a technology to miniaturize the treatment and an applicator to deliver the treatment. In this study, a mold technology was developed to integrate the cannula and hub, which are one part of applicator. In addition, surface treatment was performed on the outside of the cannula to improve the bonding strength between the cannula and the hub, and the bonding strength according to each condition was analyzed through a tensile test.

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Evaluation System of River Levee Safety Map for Improving River Levee Maintenance Technology (하천제방 유지관리 기술의 고도화를 위한 하천제방 안전도맵 평가체계 제안)

  • Kim, Jin-Man;Moon, In-Jong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.12
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    • pp.768-777
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    • 2017
  • The efforts to improve river levee maintenance technologies have accelerated globally in a bid to deal with the flood damage resulting from the changes to the climate and flood events. This paper, in line with such tendency, proposes an evaluation system of a river levee safety map to maintain the river levee in an efficient manner. The concept of a river levee safety map is aimed at maximizing the maintenance efficiency for a manager to indicate the safety index, including the current river levee sliding, piping, and visual inspection on a GIS map. To develop such an evaluation system, a safety index covering the sliding, piping, and visual inspection are designated through the data and document examination and the rational guideline to classify each index into three grades, A, B, and C, is proposed. Based on the guideline proposed, the sliding and piping characteristics in terms of safety depending on the change to the flood water level duration time at the test section (Nam river) were evaluated by numerical analysis. As a result, both the protected landside and riverside satisfied the requirements for Grade A in terms of sliding, and when it comes to piping, the grade declined to C because the flood water level duration time increased at R2. As a planning study to propose a river levee safety map evaluation system, a further advanced study, standardization of the river levee data, and improvement of the existing system and laws are required.

Effects of Ozone on $CO_2$ Assimilation and PSII Function in Two Tobacco Cultivars with Different Sensitivities

  • Yun, Myoung-Hui
    • Journal of Korean Society for Atmospheric Environment
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    • v.22 no.E2
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    • pp.89-98
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    • 2006
  • Two tobacco cultivars (Nicotiana tabacum L.), Bel-B and Bel-W3, tolerant and sensitive to ozone, respectively, were grown in a greenhouse supplied with charcoal filtered air and exposed to 200 ppb ozone for 4 hr. Effects on chlorophyll fluorescence, net photosynthesis, and stomatal conductance are described. Quantum yield was calculated from chlorophyll fluorescence and the initial slope of the assimilation-light curve measured by the gas exchange method. Only the sensitive cultivar, Bel-W3, developed visual injury symptoms on up to 50% of the $5^{th}$ leaf. The maximum net photosynthetic rate of ozone-treated plants was reduced 40% compared to control plants immediately after ozone fumigation in the tolerant cultivar; however, photosynthesis recovered by 24 hr post fumigation and remained at the same level as control plants. On the other hand, ozone exposure reduced maximum net photosynthesis up to 50%, with no recovery, in the sensitive cultivar apparently causing permanent damage to the photosystem. Reductions in apparent quantum efficiency, calculated from the assimilation-light curve, differed between cultivars. Bel-B showed an immediate depression of 14% compared to controls, whereas, Bel-W3 showed a 27% decline. Electron transport rate (ETR), at saturating light intensity, decreased 58% and 80% immediately after ozone treatment in Bel-B and Bel-W3, respectively. Quantum yield decreased 28% and 36% in Bel-B and Bel-W3, respectively. It can be concluded that ozone caused a greater relative decrease in linear electron transport than maximum net photosynthesis, suggesting greater damage to PSII than the carbon reduction cycle.

The development of LVI tester for application of transformers winding deformation diagnosis (변압기 권선변형 진단에 적용하기 위한 LVI 시험기 개발)

  • 조국희;김광화
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.16 no.5
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    • pp.97-103
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    • 2002
  • The assessment of the condition of a transformer winding which is suspected of having suffered short circuit damage can be difficult. Conventional test such as winding resistance, magnetic current or insulation resistance will only detect damage if a permanent electrical fault exists. Visual inspection of windings necessitates the removal of oil and in many cases only a very small proportion of the winding can be seen. We describe the characteristic of LVI test system and methods to detect the deformation of windings in the power transformers. As the front rise time of recurrent-surge generator pulse less than 1000 ㎱ and the peak value of pulse is about 500 V, we have the good results of detecting winding deformation in the LVI test of transformers.

Constructing the integrated information system for the coast disaster area management using 3D web GIS technology

  • Jo Myung-Hee;Shin Dong-Ho;Pak Hyeon-Cheol;Hae Young-Jin;Kim Hyoung-Sub;Kim Jin-Sub
    • Proceedings of the KSRS Conference
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    • 2004.10a
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    • pp.318-321
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    • 2004
  • The damage scale and damage area in the coast have been increased dramatically because of calamities such as typhoon. tidal wave. flood and storm. Especially. 409 cases. which reach to about $40.9\%$ of natural disasters of 1,000 cases for the recent 15 years have happened on coast area. More than $40\%$ of natural disasters also occurred every year is happening in coastland. Therefore, there is a great need to construct all related GIS database such as atmospheric phenomena (typhoon. tidal wave, flood and storm). harbor facility, harbor traffic and ebb and flow. Furthermore. the certain system should be developed and integrated with NDMS (National Disaster Management System) by using 3D web GIS technology. In this study. the coast disaster area management system was designed and developed by using 3D web GIS technique so that the coast disaster area could be monitored and managed in real time and in visual. Finally. the future disaster in coast area could be predicted scientifically.

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