• Journal of Veterinary Clinics
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• v.15 no.1
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• pp.203-208
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• 1998

A two-year-old male Chinese Shar poi dog was admitted to the hospital because of chronic diarrhea. Abnormalities detected on physical examination were thickened intestinal loops and thin or cachexic body condition.4 complete blood count revealed a mild neutrophilia. The blood chemistry panel indicated no significant abnormalities. On proctoscopic examinations colonic mucosa was reddened and edematous. Numerous Iymphocytes, plasma cells and epithelial cells were observed in the cytologic examination of the rectal scraping.4 treatment was initiated with sulfasalazinei metronidazole and prednisolone and dietary management with rice and cottage cheese was performed simultaneously. Although antibiotic therapy and dietary management were donee the dog's condition deteriorated and died suddenly. Lymphocytic-plasmacytic enterocolitis was diagnosed by postmortem pathologic examination.

• Proceedings of the Korea Contents Association Conference
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• 2019.05a
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• pp.61-62
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• 2019

애니메이션 영화에 있어서 음악은 영화의 예술적 퀄리티를 향상시키는 도구가 되었다. 본 논문은 애니메이션 영화의 주제곡을 애니메이션에서 어떻게 연기할 수 있는지, 애니메이션 음악의 창작과 서사 간에 서로 밀접한 기능과 관계를 탐구한다. 이를 위한 연구는 첫째, 애니메이션과 음악에 대한 이론적인 고찰하며, 둘째 애니메이션 영화 <코코(Coco)>의 사례 분석하며, 주제곡 위주로 음악의 기능적 특징이 애니메이션으로 어떻게 표현되는지를 다룬다. 이에 주제곡은 주제 내용과 중심인물을 둘러싸고 일정한 음악적 이미지를 형성하고 주제를 심화기능을 가지고 있음을 알 수 있다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.07a
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• pp.383-384
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• 2019

본 논문에서는 이더리움 기반 블록체인 확장성 문제해결을 위해 데이터 저장방법인 Merkle patricia tree를 응용하여 데이터에 따라 트리 이원화 사용을 제안한다. 이 연구는 시스템 자원인 CPU와 메모리를 효율적으로 사용하여 트랜잭션 처리량을 최대화하고, 작업시간을 최소화하기 위함이다. 본 논문에서는 기존 이더리움 블록체인의 트랜잭션 처리속도와 확장성 향상을 목표로 하며. 기존의 방식과 비교하여 제안을 분석한다.

• Journal of KIBIM
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• v.12 no.1
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• pp.1-9
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• 2022

Concrete formwork is a crucial component for any construction project. Artificial intelligence offers great potential to automate formwork design by offering various design options and under different criteria depending on the requirements. This study applied image segmentation in 2D formwork drawings to extract sheathing, strut and pipe support formwork elements. The proposed artificial intelligence model can recognize, classify, and extract formwork elements from 2D CAD drawing image and training and test results confirmed the model performed very well at formwork element recognition with average precision and recall better than 80%. Recognition systems for each formwork element can be implemented later to generate 3D BIM models.

• Korean Journal of Environment and Ecology
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• v.20 no.4
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• pp.448-463
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• 2006

This study analyzed the changes in vegetation structure of Quercus mongolica communities, Pinus densiflora communities, Robinia pseudo-acacia communities and Pinus rigida communities for the last 11 years$(1994{\sim}2005)$ to provide basic data for ecological restoration. We studied the vegetation structure of four communities within a plot$(unit:\;1,200m^2)$) and concluded that Canopy Layer continuously preserved and expanded existing superior species, Understory Layer grew Styrax japonica which is highly adaptive to urban environment, and Shrub Layer grew more Stephanandra incise. An analysis on species diversity indicated that Quercus mongolica communities$(1.0921{\rightarrow}1.0381{\rightarrow}1.0633)$, Pin us densiflora communities$(0.7071{\rightarrow}0.8553{\rightarrow}1.0164)$, and Robinia pseudo-acacia communities$(0.9255{\rightarrow}0.8392{\rightarrow}0.8721)$ sharply decreased in 1998 and are gradually increasing these days. Also, Pinus rigida communities decreased from 0.9008 in 1998 to 0.8850 in 2005. Fluctuation in numbers of species and trees were similar. Acidity of soil was $4.34{\sim}5.31$ and improved compared to 20 years ago.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.38 no.2
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• pp.118-124
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• 2020

The purpose of this study was to explore the ecological aesthetic features and the implications for ecological landscape design by analyzing the design philosophy and ecological artworks of Patricia Johanson, an ecological artist. Literature review and a field visit were conducted to investigate Johanson's four art projects that express the functional purpose, artistry, and locality of symbiosis with nature and restoration of ecosystem habitats. As the results of analysis, first, Johanson's work created 'functional art work' and 'artistic infrastructure'. Second, the historical and regional characteristics were expressed artistically and symbolically. Third, Johanson is characterized by connecting humans and nature through the publicity of works of art, and raising the awareness of preservation of nature and environment among the community and children. Johanson's innovative works can provide inspiration for landscape architects pursuing functional and sustainable landscape design.

• Composites Research
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• v.32 no.1
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• pp.21-28
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• 2019

Recently, according to environmental regulations, the automobile industry has been conducting various research on the use of composite materials to increase fuel efficiency. However, there has not been much research on lightweight chassis components. Therefore, in this research, the purpose of this study is to apply composite materials to the sub-frame of chassis components to achieve equivalent levels of stiffness, strength, NVH performance and 50% lightweight compared to the steel sub-frame. First, the Natural frequency of steel and composite specimens was compared to the damping characteristics of composite materials. Then, in this study, the Lay-up Sequence was derived to maximize the stiffness and strength of the sub-frame by applying composite materials. And this lay-up Sequence is proposed to avoid heat shrinkage due to curing during manufacturing. This process was designed based on a FEM structural analysis, and a Natural frequency and frequency response function graph was confirmed based on a modal analysis. The prototype type composite sub-frame was manufactured based on the design and the F.E.M analysis was verified through a modal experiment. Furthermore, it was fitted to the actual vehicle to verify the natural frequency and the indoor noise vibration response, including idling and road noise. This result was confirmed to be equivalent to the steel sub-frame. Finally, the composite sub-frame weight was confirmed to be about 50% of the steel sub-frame.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.35 no.1
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• pp.24-31
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• 2022

This study investigated microstructures, crystal structures, polarization, dielectric and electromechanical properties of 0.76Bi_1/2Na_1/2TiO₃-0.24SrTiO₃ (BNT-24ST)-based piezoceramcs by adding Li₂CO₃ and B₂O₃ (LB) as sintering aids for low-temperature sintering. All samples were successfully synthesized using conventional solid-state reaction method and sintered at 950, 1,000, 1,050, 1,100 and 1,175℃ for 2 hours. Without LB, specimens required sintering temperatures over 1,175℃ for sufficient densification, while the addition of 0.10-mol LB decreased the sintering temperatures down to 950℃. The average grain size and dielectric properties of BNT-24ST-10LB ceramics were enhanced with increasing sintering temperature. We found that the low-temperature sintered BNT-24ST piezoceramics by adding LB showed the d₃₃*value of 402 pm/V at 4 kV/mm after sintering at 1,050℃, which was better than that of high-temperature fired specimens sintered at 1,175℃ without LB (242 pm/V). We believe that the results of this study promise a candidate for low-cost multilayer ceramic actuator applications.

• 한국초전도학회:학술대회논문집
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• v.9
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• pp.223-228
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• 1999

We have investigated the microwave properties of a high-T$_c$. superconducting Josephson junction by Shapiro step measurements. A Josephson junction was fabricated on the bicrystal MgO substrate using pulsed laser deposition method. We have measured Shapiro steps in the I-V characteristics under the irradiation of 1.36 cm wavelength up to 45 K and found inclined current steps above 50 K. In order to understand these results, we introduced an additional resistance connected in series to RSJ model. Using this modified RSJ model, we could explain the inclined current steps as a result of superposition of the junction and an additional resistance above certain temperatures. Also, we presented the received power of the Josephson junction above 50 K.

• Proceeding of KASS Symposium
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• 2008.05a
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• pp.197-202
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• 2008

The Korea Land Corporation have planned Chongna site in Incheon as a great complex town including residence, financial center, resort, shopping mall, tour and sport. One of the large estate(17,800,000$m^2$) is under construction. Cheongna site is divided into six zoning parts, according to the meaning of 6 jewels(crystal, sapphire, ruby, emerald, jade, pearl, diamond). KLC required to me 6 pedestrian with various special forms and structural system. I will introduce a various pedestrians. There are not only 4 stayed and suspended bridges, but also a truss and arch bridges.