• 항공우주정책ㆍ법학회지
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• 제8권
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• pp.43-70
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• 1996

• 한국환경과학회지
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• 제32권11호
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• pp.841-852
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• 2023

In this study, the significant wave height and wave period of a specially designed observation system that connected two drifting buoys to an ocean data buoy was observed for 23 days from February 7 to 29, 2020, and the results were compared and analyzed. The results indicated that, in comparison to the ocean data buoy, the drifting buoy exhibited greater variability in significant wave height over shorter time intervals. The wave period of the ocean data buoy also appeared longer than that of the drifting buoy. The greater the observed significant wave height and wave period from both the ocean data and drifting buoys, the more pronounced the differences between the two observation instruments become. Moreover, the study revealed that the disparity in observation methods between the ocean data and drifting buoys did not significantly affect the significant wave height characteristics, as long as the period remained unchanged for up to half of the observation time.

• Journal of Astronomy and Space Sciences
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• 제32권1호
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• pp.1-11
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• 2015

Earth's magnetopause separating the fast and often turbulent magnetosheath and the relatively stagnant magnetosphere provides various forms of free energy that generate low-frequency surface waves. The source mechanism of this energy includes current-driven kinetic physical processes such as magnetic reconnection on the dayside magnetopause and flux transfer events drifting along the magnetopause, and velocity shear-driven (Kelvin-Helmholtz instability) or density/pressure gradient-driven (Rayleigh-Taylor instability) magnetohydro-dynamics (MHD) instabilities. The solar wind external perturbations (impulsive transient pressure pulses or quasi-periodic dynamic pressure variations) act as seed fluctuations for the magnetopause waves and trigger ULF pulsations inside the magnetosphere via global modes or mode conversion at the magnetopause. The magnetopause waves thus play an important role in the solar wind-magnetosphere coupling, which is the key to space weather. This paper presents recent findings regarding the generation of surface waves (e.g., Kelvin-Helmholtz waves) at the Earth's magnetopause and analytic and observational studies accountable for the linking of the magnetopause waves and inner magnetospheric ULF pulsations, and the impacts of magnetopause waves on the dynamics of the magnetopause and on the inner magnetosphere.

• 대한소아치과학회지
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• 제21권2호
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• pp.611-616
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• 1994

A major cause of missing permanent incisors is congenital abscence and extraction because of trauma and pathologic condition. The request for restoration of missing or spaced anterior teeth is common in dental practice. Problems, such as the tilting, drifting, and rotation of teeth adjacent to the space, complicate the restoration of apperance, and a normally simple restorative dental procedure may become difficult. There are two primary treatment alternatives to improving a dentition's irregular and spaced apperance-closing the space by orthodontic means or providing a prosthesis to disguise the space. The treatment choice depends on many variables, but, as a general rule, patients with a normal overbite, overjet, and buccal relationship are better treated by maintaining the sapce and providing a prosthesis, either fixed or removable. This case report presents two cases : Traumatic loss of maxillary right and left central incisors, Extraction of malformed mandibular right central inciosr. The loss of central incisor space was regained by the fixed-removable and fixed orthodontic appliance, and then Maryland bridge was cemented.

• 한국실내디자인학회논문집
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• 제14권5호
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• pp.133-140
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• 2005

Jacques Derrida, a leading theorist of the post-structuralism, has explicated how the material reality is subordinated to the ideality of form, by noticing the platonic concept, 'chora', which implicates the spatiality as the matrix and also by actualizing its essential meaning as the femininity. On the basis of the idea of the platonic 'chora', the Derridian deconstructive spatiality and its feminist oriented enlargement of Grosz this study is purposed to elucidate the architectural idea of Zaha Hadid that is located in the similar horizon with the deconstructionism. On the one hand it is focused on the explication of the new concept of space, which is dealt with the deconstruction of the traditional concept of space, on the other on the inference of the feminity of the originally understood spatiality. With this inference it is finally intended to reexamine the foundation of the discussion for the architectural space that must be ahead of the discussion for the difference between the masculine and the feminine space. If it is fundamentally and manifoldly executed, not only the architectural paradigm will enter into an renewed phase, but also the various ways toward the new direction of the architecture be explored.

• 한국주거학회논문집
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• 제17권5호
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• pp.17-25
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• 2006

This study begins to make inquires about user's opinion of introducing Interior Landscape into Apartment Housing to grip the problems of contemporary Interior Landscape and suggest the fundamental data to improve it. The city-ward drifting of population drawn from industrial development and aggravation of living condition bring about exclusion of nature and lack of green space. Furthermore, it increases the length of stay of urban liver in indoor space. Thus, dwellers' desire to Interior Landscape increase but housing can't follow it. The purpose of this study is to understand characteristics of Interior Landscape, derive essential factors, study plans, establish radical data, and suggest better plans including Interior Landscape through making inquires about user's opinion.

• Journal of Astronomy and Space Sciences
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• 제3권2호
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• pp.117-122
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• 1986

최근에 지구 자기권의 magnetotail 부분에서 주파수 범위가 매우 넓은 정전기적 교란이 발견되었다. 이 불안정성은 이 지역에서 발견되는 이온층으로부터 날라오는 이온빔에 의하여 발생된다는 사실을 알고 있다. Magnetotail 속에서 얼어나는 이온빔 acoustic 불안정성의 컴퓨터 모의실험 결과를 제시한다. 이 불안정성으로 안하여 위성에 의하여 관측된 이온들의 heating이 얻어짐을 확인하였다.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2005년도 추계학술대회 논문집
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• pp.111-114
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• 2005

This study begins to make inquires about user's opinion of introducing Interior Landscape into Apartment Housing to the problems of contemporary Interior Landscape and suggest the fundamental data to improve it. The city-ward drifting of population drawn from industrial development and aggravation of living condition bring about exclusion of nature and lack of green space. Furthermore, it increases the length of stay of urban liver in indoor space. Thus, dweller's desire to Interior Landscape increase but housing can't follow it. The purpose of this study is to understand characteristics of Interior Landscape, derive essential factors, study plans, establish radical data, and suggest better plans including Interior Landscape through making inquires about user's opinion.

• Restorative Dentistry and Endodontics
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• 제37권2호
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• pp.114-118
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• 2012

인접면의 우식증으로 인해 인접면의 공간 소실과 후방치아의 근심 경사가 발생한 본 증례에서 치아의 보철 수복 전 교정용 링의 삽입과 임시 전장관의 수정을 통해 치간 공간의 획득과 치축의 개선을 시행할 수 있었다.

• 대한치과교정학회지
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• 제4권1호
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• pp.57-61
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• 1974

The patient, a girl of 19 years in good health, had a class I malocclusion. The maxillary left centra1 incisors and both lateral incisors had already erupted. But the space for the right central incisor was partially closed by the mesial drifting of the neighboring teeth. The caused a shift in the midline and a cross-bite relation on the incisors. X-ray examination revealed the presence of the right central incisor in the alveolar bone and odontoma just above the crown of the right central incisor. After enough space for the impacted incisor was created in the dental arch with a open-coil spring the rectangular incision was made. Removing the odontoma uncovered the flat surface of the labial aspect of the incisor. During the tooth had erupted of its own accord, any unnecessary force had been imposed on the tooth. When it was decided that the tooth should be brought out by the mechanical device, the gold cast onlay with hook was used and run a light elastic between this hook and the main arch wire. Finally the tooth was brought down to the arch level. The result was excellent. Fortunately the esthetic problem and any detrimental effects on the psychological make-up could be avoided.