• 한국의류학회지
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• 제46권1호
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• pp.147-164
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• 2022

The aim of this study was to reproduce the ordinary attire of Yi Seung-hyu, a civil official and writer of the late Goryeo, which will be used to make a his portrait. The reproduced costume consists of a single-layered pyoui (表衣) and jungdan (中單), lined jeogori and baji, and geon (巾), created with reference to historical documents, materials, and portraits. The pyoui was made with samcheokbe, with an H-shaped neck-shoulder band, an oblique single collar, and rectangular gussets. Two skirts were attached on the inside at the back, similarly to dopo. The jungdan also has an oblique single collar, but has an I-shaped neck-shoulder band and triangular gussets. A flat felled seam stitch, whip stitch, and French seam stitch were used in the hemlines and seams of the pyoui and jungdan. The jeogori and baji were made with toju (土紬), and small ties were attached to stabilize them. The geon is a long, oblique hat, which has folded side lines, and was made with flexible black hangra and using a French seam stitch and backstitch. The results include the elements of "restoration, historical research, and portrait costume", and will be maintained as the cultural heritage of Samcheok City.

• Ocean Systems Engineering
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• 제14권2호
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• pp.157-169
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• 2024

The sudden release of water from a dam failure can trigger bores on a flat surface and exert substantial impact forces on structures. This flow poses a high-risk flood hazard to downstream urban areas, making it imperative to study its impact on structures and devise effective energy dissipators to mitigate its force. In this study, a combination of Genetic Algorithm optimization and numerical modeling is employed to identify the optimal energy dissipator. The analysis reveals that a round arc-shaped structure proves most effective, followed by a triangular shape. These shapes offer wide adaptability in terms of structure dimensions. Structures with higher elevation, especially those with round or triangular shapes, demonstrate superior energy dissipation capabilities. Conversely, square-shaped structures necessitate minimal height to minimize impact forces. The optimal width for dissipating energy is found to be 0.9 meters, allowing for effective wave run-up and propagation. Furthermore, the force exerted on structures increases with higher initial water levels, but diminishes with distance from the dam, highlighting the importance of placement in mitigating impact forces.

• 한국과학교육학회지
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• 제35권1호
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• pp.121-130
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• 2015

국가 수준의 표준화된 학업 성취도 평가 결과를 분석하여 학생들의 성취 수준을 파악하고 이를 교육정책 수립이나 교수활동 개선에 반영하는 과정은 교육의 책무성으로 중요한 부분이다. 본 연구에서는 과학과 국가 수준 학업 성취도 평가 결과를 분석하고, 답지 반응률 분포 곡선을 활용하여 평가 문항의 특성을 분석하고자 하였다. 이를 위해 2010년부터 2013년까지 시행된 과학과 성취도 평가 결과를 성취 수준에 따라 분석하였으며, 성취도 점수에 따른 특정 문항의 정오답 반응률을 토대로 최적 곡선을 추정한 그래프인 답지 반응률 분포 곡선을 활용하여 선다형 평가 문항 112개의 정답지와 오답지 반응률 곡선의 유형을 분류하고, 유형별 문항 특성을 분석하였다. 분석 결과, 정답지는 5가지 유형(S자형, J자형, 직선형, F자형, 계단형)으로 분류하였고, 오답지는 4가지 유형(보통형, 평지형, 산지형, 상승형)으로 분류하였다. S자형의 정답지 반응 곡선과 보통형의 오답지 반응 곡선이 조합인 문항이 가장 많았으며, 성취 수준에 따라 학생들을 변별하는데 적절한 문항인 것으로 분석되었다. 또한, 정답 반응률 분포와 오답 반응률 분포가 서로 연관되는 것으로 나타났다. 연구 결과를 토대로 교수 학습, 교실 평가 등에서 함의를 논의하였다.

• Archives of Plastic Surgery
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• 제32권2호
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• pp.183-188
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• 2005

Defect on the temporal area caused by, surgical ablation of a tumor or an infection should be reconstructed immediately to prevent potentially life-threatening complications such as meningitis and cerebrospinal fluid leakage. The defect on the temporal area usually presents as a typical 'cone-shape'. Successful reconstruction requires sufficient volume of well-vascularized soft tissue to cover the exposed bone and dura. From 1994 through 2003, the authors applied rectus abdominis free flap for the reconstruction of the temporal defect from 1994 through 2003. There were 10 patients with a mean age of 52.1 years. Of these 10 patients, external auditory canal cancer was present in four patients, temporal bone cancer in two, parotid gland cancer in one and three patients were reconstructed after debridement of infection(destructive chronic otitis media). All the free flaps survived, and flap-related complications did not occur. Compared to a local flap, the rectus abdominis free flap can provide sufficient volume of well-vascularized tissue to cover the large defect and can be well-tolerated during an adjuvant radiation therapy. The long and flat muscle can be easily molded to fit in to the 'cone-shape' temporal defect without dead space. It is also preferred because of the low donor site morbidity, a large skin island and an excellent vascular pedicle. Two-team approach without position change is possible. In conclusion, the authors think that rectus abdominis free flap should be considered as one of the most useful method for the reconstruction of a cone-shaped temporal defect.

• Animal Systematics, Evolution and Diversity
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• 제20권1호
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• pp.31-37
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• 2004

서귀포(제주도),, 횡간도 및 일산해수욕장(울산)에서 1985년 7월 11일, 1990년 7월 23일 1994 년 7월 16일에 채집된 히드라해파리류는 평면해파리(Aequorea coerulescens)와 작은부레관해파리(Physalia physalis utriculus)로 각각 동정되었다. 이들은 한국 미기록종으로 판명되어 재기재하여 보고한다. 평면해파리는 외산이 편평한 베레모 모양이고 큰 입을 가지며 60개의 주름진 구엽과 120개의 방사관을 가진다. 작은부레관해파리는 비교적 큰 부유기를 가지고 부유기의 아래에 섭식개충, 지상개충(=방어개충), 생식개충과 1개의 리본 모양의 큰 주촉수와 많은 작은 촉수를 가진다. 본 연구의 결과 지금까지 밝혀진 한국 해산 히드라해파리류는 5목 13과 15종이 된다.

• Animal cells and systems
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• 제6권3호
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• pp.195-199
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• 2002

Four new species of the genus Amynthas are described from Korea： Amynthas mujuensis sp. nov., Amynthas assimilis sp. nov., Amynthas moakensis sp. nov., and Amynthas sangumburi sp. nov. The intestinal caeca are of simple type and genital markings lacking in all four species. Amynthas mujuensis sp. nov. has male field with large oval papillae, each papilla with longitudinal seminal groove； paired spermathecal pores present in 6/7, 7/8 dorsally. Amynthas assimilis sp. nov. has mare field composed of paired symmetrical pear-shaped pads with broad ends laterally, axes of symmetry diagonally oriented towards posterior； spermathecal pores in 5/6, 6/7. Amynthas moakensis sp. nov. has male pores on small porophores surrounded by swollen concentric furrows, with the spermathecal pores in 6/7, 7/8, 8/9, ventrally. Amynthas sangumburi sp. nov. has male pores centered on 0.8 mm circular flat porophores, with the spermathecal pores in 5/6, 6/7, 7/8, 8/9, laterally.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2004년도 추계학술대회
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• pp.545-550
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• 2004

KSTAR cryostat is a 8.8 m diameter vacuum vessel that provides the necessary thermal barrier between the ambient temperature test cell and the supercritical helium cooled superconducting magnet providing the base pressure of 1 ${\times}$ $10^{-3}Pa$. The cryostat is a single walled vessel consisting of central cylindrical section and two end closures, a flat base structure with external reinforcements and a dome-shaped lid structure. The base structure has 8 equally spaced support legs anchored on the concrete base. The cryostat vessel design was executed to satisfy the performance and operation requirements. The major loads considered in the structural analysis were vacuum pressure, dead weight, electromagnetic load driven by plasma disruption, and seismic load. Based on the fabrication and inspection procedures for the vessel, cryostat vessel was fabricated and inspected. It was confirmed that the inspection results were acceptable.

• Journal of the korean society of oceanography
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• 제36권3호
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• pp.83-92
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• 2001

An investigation on the zonal communities in Chokchon macrotidal flat, Incheon, Korea, was carried out on July 1994, eight years after the initial survey done by Frey et al. (1987a and b). A survey transect (4 km long) was established with 41 stations having an equi-interval of 100 m. Macrofaunas were sampled in July 1994. R-mode cluster analysis and ordination analysis (detrended correspondence analysis or DCA) were performed. The aims of the investigation were to: (1) observe the distribution and abundance patterns, including zonation of benthic macrofaunal communities in the area; and (2) gain information about faunal changes between two different periods. The primary feature of distribution was corresponded with Frey's zonation, and this was shaped by three level-specific species groups. Significant changes in dominant species were detected when compared with the faunal assemblages of 1986. The bivalve mollusk, Meretrix petechialis, seemed to have disappeared. Two newly arrived organic pollution indicator species, Theora fragilis and Capitella capitata, were regarded as impregnable proof of response to eutrophication, although the concrete evidence on the eutrophication source was not found.

• 한국정밀공학회지
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• 제18권4호
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• pp.104-111
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• 2001

The toolpath generation for 3D shaped parts with adaptive isocurve is more precise than existing methods, and the machining time can be reduced. Whether adaptive isocurves are inserted or not is determined by the surface shape, but the number of curves inserted and the total path length vary with initial step lengths. In this paper, therefore, by introducing the concept of the scale factor into the initial path interval ; toolpath was regenerated.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2003년도 춘계학술발표회
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• pp.141-151
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• 2003

In this study the writer would like to study the art of navigation in the Era of Silla. For the purpose of this study, the writer studied ship's log book of Ennin's Diary, the ancient ship's structures of Korean, Chinese, Japanese, winds and ocean currents around Korean Peninsular which effect the navigation of sailing ship, and ancient reference books and materials. The result of this study. in the ship's structure in the Era of Silla. bottom structure is considered flat and V-Shaped type, and sailing ship had anchor, sail, considerable deckhouse, transverse bulkhead. And the ship's main materials of sailing ship was wood. partially used irons in the panting structures. In the art of navigation, navigators used winds, ocean current, anchor, sail, depth and color of sea water, lights, ballast. Especially navigators used astrologers and geomancers for astronomical observation, weather forecast, natural phenomena.