• Journal of the Optical Society of Korea
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• 제16권3호
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• pp.243-246
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• 2012

An off-axis four-mirror-anastigmatic telescope is presented here which is composed of two aspheric surfaces and two spherical surfaces. The entrance pupil diameter is 290 mm and the stop is located at the primary mirror. The effective focal length is 900 mm. The strip field of view for the telescope is $15^{\circ}{\times}0.2^{\circ}$ and if the telescope is launched into an orbit about 400 km altitude, the observed range width will be more than 105 km within a scene without any other auxiliary scanning instrument. The spectral range can be as wide as from visual wave band to infrared wave band in the mirror system. This telescope can be used for environmental monitoring with different detectors whose pixel is adapted to the optical resolution. In this paper, the spectral range is chosen as 3.0 -5.0 ${\mu}m$, and center distance of the pixel is 30 ${\mu}m$. And the image quality is near the diffraction limit.

• 한국조경학회:학술대회논문집
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• 한국조경학회 2007년도 Journal of Landscape Architecture in Asia Vol.3
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• pp.162-167
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• 2007

The courtyard life style ever existed as the major traditional living form in wide north China areas. The research made case study and specific analysis on the space organization, constitution and order of the courtyard living, as well as the dwelling accessory manners and transfer space patterns both inside and outside of the courtyard. Pingyao ancient city as the research sample (object), its courtyard composition, classification and characteristic are studied profoundly to explore local traditional cultural traits. On upon the analysis, the research is concluded that the civil courtyard in the ancient Pingyao city bears the feature of in a continuous changing process, which represented as 'from confined to opening', 'from narrow to wide', 'from public to private'. Despite of the courtyard dwelling location and direction, all accessories architectural items on the main room roof were influenced by the geomantic omen culture. As of the inside wall body, entrance and side wall of the courtyard, the woodcraft, stone carving, brick carving on above not only could functioned in architecture artistic, but also express the traditional education spiritual feature.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2005년도 추계종합학술대회
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• pp.495-498
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• 2005

본 연구에서는 전략적 마케팅을 위한 지능형 인터넷 쇼핑몰을 설계하고 구현하기 위해 고객들의 접속 기록과 상품 구매 기록 및 신상정보를 데이터마이닝 기법에 의해 통계적으로 분석하고 고객을 세분화하여, 고객이 상품에 대한 인기도에 따라 상품 진열을 자동적으로 구성할 수 있는 알고리즘 향상에 관한 연구이다. 본 시스템을 통하여 쇼핑몰 관리자의 주관적인 판단에 의해 수작업으로 이루어지는 기존의 쇼핑몰 관리 업무를 자동화 할 수 있으며, 또한 최근에 급격하게 증가하고 있는 전자상거래 시장에서 경쟁력을 강화할 수 있는 새로운 형태의 마케팅 기법을 제시할 수 있다.

• Environmental Analysis Health and Toxicology
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• 제17권3호
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• pp.245-252
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• 2002

Airborne pollutants in the subway facilities can be potentially harmful to the health of passengers. This study was designed to examine whether the suspended particulates have mutagenic or carcinogenic effect on the plant cell systems. Total suspended particulates were collected with a high volume air sampler, in the entrance, the waiting room, and the platform of each subway station. The biological end -points in this experiment were the pink mutations in stamen hairs and micronuclei in the pollen mother cells of Tradescantia. The exudates were collected by shaking the filter papers from the sampler in distilled water for 24 hours. All the plant cuttings exposed to the exudates resulted in positive responses. The micronucleus assay proved more reliable and sensitive to the test than the stamen hair assay. The results indicate that the air particulates can give an adverse effect on the health of subway passengers.

• 대한디지털의료영상학회논문지
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• 제13권4호
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• pp.145-151
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• 2011

The purpose of this study is to know some changes of resolution and image if we remove scattered ray using lead plate when doing lumbar lateral projection. Using 3 DR system(2 FD types, 1 CCD type) equipments and 2 film system equipments, we gain the image whether the phantom of abdomen equivalent sticking resolution chart has lead plate or not, whether we do collimation or not. Also, we use ion chamber, measure radiation exposure rate and change to entrance surface dose from it. we gain that images in the greatest condition of taking in clinic. 5 people in this group decoded resolution with our eyes, measured thickness of images and compared them from each equiments. Resolution has difference to size of collimation in DR FD type. Also there is no difference the original image with the new image which we abbreviated mAs. In DR CCD type, resolution didn't have difference whether lead plate is or not and whether we do collimation or not. In film type, existing or nonexisting of lead plate didn't influence on resolution. Lead plate makes the quality of image higher due to reducing scattered ray, it doesn't influence on resolution.

• 한국임상수의학회지
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• 제34권1호
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• pp.58-60
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• 2017

An 11-year-old, castrated Maltese dog presented with a 3-week history of periocular swelling, epiphora, and intermittent strabismus. On examination, a foreign body was observed in the anterior chamber, along with orbital cellulitis. Severe gingivitis and plaque accumulation were also diagnosed. The foreign body was surgically removed, and dental prophylaxis and dental extraction were performed. The foreign body entrance could not be found intraoperatively, and the foreign body, later identified as a feather, was removed through a clear corneal incision. The right maxillary molar, which had periodontal inflammation, was also extracted. One day postoperatively, severe hypopyon developed, although the periocular swelling was reduced. These signs persisted despite topical and systemic antibiotic and anti-inflammatory therapy; therefore, the right eye was enucleated 1 week later. Intraoperatively, a fistula was found connecting the orbital medial wall, right maxillary molar root, and sclera. The fistula entered the dorsomedial sclera approximately 7 mm behind the limbus. Enterobacteria were cultured from the area. Foreign bodies can enter the anterior chamber not only through the cornea, but also through the mouth. Therefore, when the entry point cannot be found in the cornea, a careful dental examination is required, and the foreign body must be removed through the sclera rather than the cornea.

• 영재교육연구
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• 제22권4호
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• pp.929-942
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• 2012

본 연구는 대학부설 과학영재교육원에서 관찰 추천제에 의한 선발 및 융합과학전공의 도입 후에 학생 선발과 교육 내용 구성이 어느 정도 타당하게 진행되었는지를 분석해 보고 문제점을 파악하여, 향후 과학영재교육원의 학생 선발과 융합과학 전공 운영을 위한 제안을 하고자 하는 목적에서 실시되었다. 이를 위해 한 대학부설 과학영재교육원 융합과학전공의 입학사정 결과를 분석해 보고, 입학 성적과 입학 후 융합과학전공에서의 수행 능력과의 상관관계를 분석해 보았다. 그 결과 관찰 추천제가 추천자 및 심사자 대한 의존도가 높은 선발 방식임에도 불구하고 심사자들 사이의 관점이 매우 다른 것으로 나타났으며, 선발과 입학 후 교육이 일관성 있게 이루어지지 못했다는 문제점이 나타났다.

• 화훼연구
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• 제19권1호
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• pp.77-80
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• 2011

본 연구에서는 돌잔치 공간의 화훼장식에 대한 소비자들의 성별 만족 요인과 디자인의 선호도 등 의식을 파악하기 위하여 성인 남녀 650명을 대상으로 설문조사를 실시하였다. 그 결과, 돌잔치 공간에 화훼장식 디자인이 잘 되어 있으면 소비자의 만족도가 향상되고 재방문 의도 또한 증가하였다. 남성의 만족도에 가장 큰 영향을 미치는 요인은 화훼장식 디자인의 조화와 색상이었으며, 여성의 경우에는 화훼장식 디자인의 스타일과 구성이었다. 성에 관계없이 화훼장식의 위치는 테이블, 입구, 단상, 벽, 천정 순으로 선호하였으며, 식물소재는 장미를, 화훼장식 디자인의 색상은 분홍색으로 볼륨감 있는 화훼장식품을 선호하였다.

• Journal of Ecology and Environment
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• 제45권3호
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• pp.152-162
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• 2021

Background: Recent declines in bee populations, along with increasing demand for pollination services in urban, agricultural, and natural environments, have led to strategies to attract wild bees to these areas. One of these strategies is installing artificial nests adjacent to urban gardens and agricultural farms. Bee hotels and nest boxes are among the artificial nests used by gardeners and farmers to attract pollinators. In this paper, we reviewed 50 studies that reported the efficiency of nest boxes and bee hotels in attracting bees. We considered the maximum occupation rate (percentage) as the main index to evaluate the efficiency of artificial nests. Results: The maximum occupation rate of bee hotels was higher in farms (averaged 44.1%) than in forests (averaged 30.3%) and urban (averaged 38.3%) environments. In the case of nest boxes, most studies reported efficiencies of less than 20%, with an occupation rate of 16% and 5.5% on average in forest and urban environments respectively. However, our meta-analysis results showed that there was no significant relationship between the occupation rate of the nests and their installation place. Regression analysis also showed that the structural features of bee hotels (length and diameter) and nest boxes (volume and entrance size) did not affect their efficiency in attracting bees. Conclusion: Our data showed that the strategy of installing artificial nests to attract pollinators is successful only concerning bee hotels, and the use of nest boxes has not been very successful.

• Architectural research
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• 제21권1호
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• pp.9-20
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• 2019

In the spatial configuration of a unit plan, two rules exist: one that governs the arrangement of spaces, and one that controls the design process of generating a unit plan. This study defines space grammar as an integration of the two rules that give birth to a given spatial configuration and as the process of the generation of unit plans. To understand the distinctive features of Indonesian row houses, this study analyzes the unit plans of row houses in new towns of the metropolitan cities of Indonesia, derives a common space grammar from the unit plans, and interprets the sociocultural background that has produced this space grammar. This study employs Seo's (2007a; 2007b) graph-theoretic methodology to analyze the spatial configurations of unit plans along with a topographical approach to systematically illustrate the design process. The guest space was found as the most unique space of Indonesian houses, which cannot be found in other Southeast Asian houses. Kitchen was clearly seperated from the dining and living spaces, following traditional custom. Dining space was found to serve as a circulation center, connecting the entrance, the lving area and the kitchen. This study locates the basic orders of primary space and the design principles that dictate the unique spatial configurations of Indonesian row houses. This study reveals the basic space grammar that underpins the forms of Indonesian row houses, explaining the sociocultural and geo-climatic factors affecting this space grammar and proposing unique characteristics of Indonesian contemporary houses.