• 한국의류학회지
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• 제33권8호
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• pp.1315-1324
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• 2009

This study is on the consolidation process of the conservation process of fabric with golden thread found in relics. Gold film was glued to pieces of Korean paper and satin using hide glue, which is a natural adhesive and resin Paraloid B-72, which is a liquid type adhesive. This study examines the types and concentration of the adhesives that are appropriate for consolidating gold film on fabric. The advantage of hide glue is that it is harmless to humans and has a high stability. This glue is also believed to be the closest to the adhesive that was used when the relic was originally made. Its weakness is that it is stiff and weaker than chemical glues, but after being washed with water the adhesion level increases. Therefore, hide glue is appropriate in the following instances: a) when washing after consolidation b) when the substrate of gold threads are significantly damaged, and c) when treating greater sized relics that take a longer time to work on. However, Paraloid B-72 has a better adhesion and flexibility than hide glue, but tends to spread out into a greater area, and the area where it is applied tends to absorb less water than before the application. In addition, it is noxious and can be harmful in long-term exposure. Therefore, Paraloid-72 is appropriate in the following instances: a) when consolidating the fabric after washing, and b) when working on smaller relics and consolidating smaller parts of a relic. The necessary concentration levels for consolidants for gold film are 30% for liquid type hide glue and at least 10% for Paraloid B-72 in order for the gold film to stay intact on the fabric during washing, consolidation, exhibition, and conservation.

• 감성과학
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• 제21권1호
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• pp.91-98
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• 2018

The purpose of this study is to reveal concrete evidence on how aesthetic preference is applied in product design by countries. Since the 19th century, the proportion has been examined various times, and the conclusions consistently showed the strong preference for the golden ratio (1:1.618). However, previous studies are mainly focused on western products that were designed by western designers, so when the same experiment conducted for the first time in Asia with the question of 'Is the Asian subjects also likes the golden ratio?', the result clearly revealed that Korean subjects have a significant preference for the root ratio (1:1.414) and perfect square (1:1). It demonstrates that proportion preference might be different by countries, and it also influences on everyday products. Moreover, there is not enough evidence of Asian product proportions. For this reason, this study will strive to expand the knowledge on Asian aesthetic preference by focusing on Japanese automobiles that were designed and produced in Japan. 55 iconic Japanese automobiles were analyzed for proportion and compared with 50 iconic German automobiles. The result shows that Japanese automobiles have a shorter length of 7:10 (1:1.414) ratio than German automobiles with 13:23 (1:1.769) ratio. This result proves that there is the difference in preference for the proportion of Japan and Germany, and it has already influenced on automobile proportions. This result has a strong value that finding the most appropriate proportion of automotive design is a major issue in new product development, so this can be adapted to various fields of the design process where strong cultural value exists.

• 디지털융복합연구
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• 제16권11호
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• pp.471-476
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• 2018

이 논문은 한 가정에서 나타난 가족관계의 형성과 분열과정의 원인과 결과, 관계회복에 대한 의미를 파악하는 데 목적을 두고 있다. 분석 작품으로는 2018년 상반기 가장 높은 시청률을 보인 드라마<황금빛 내 인생>을 선정하였다. 연구방법은 이 드라마에서 나타난 한 가정을 중심으로 베이비부머세대와 에코부머세대, 그 이후 세대를 통해 분석하였다. 그 결과로는 가족관계에 대한 세대 간의 부담과 갈등, 그리고 책임감은 가부장적인 일방적인 관계였다. 이러한 관계는 부담감으로 얽혀있는 관계를 끊어버리고 해체하였다. 가족 간의 관계단절은 가족의 굴레에서 벗어나 개인의 주체성을 회복하는데 중요한 역할을 하였으며, 해체된 관계단절의 회복은 개인의 자존감과 정체성이 먼저 정립된 후 이루어지는 쌍방향성 관계에서 가능한 것으로 나타났다.

• 한국실내디자인학회논문집
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• 제26권1호
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• pp.63-74
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• 2017

This study is for the characteristic of expression of exhibition presentation in 'The Korean peninsula' which is the Golden Lion Winner at the Venice Biennale in 2014. The Korean peninsula provides two opposite political and economic systems and adaptations of modernism through various multi media images. The curator, Minsuk Cho, presented cinema montage image of Collision for analyzing dynamic exhibition organization and provides the foundation of his theory from Bergson's image and duration to Deleuze's movement-image and time-image which is mentioned from Deleuze's book "cinema 1" and "cinema 2". Furthermore, the Korean peninsula has showed perception-image and affection-image from Eisenstein & Vertov's cinemathology and systemized exhibition presentation. The montage of Collision has maximized the movement from the variety and complexity in a collision and it made difference between information images which are space, time, emotion, intelligence, the tumult between subjectivity and objectivity, fragments from reorganizing itself, and distribution and art images. The limit of montage of Collision's dialectic is not only visual but also space from organic organization but the Korean peninsula overcomes its limit and shows leap of tactile perception and time-reflection from the montage of Collision's dialectic. Therefore, the exhibition of the Korean peninsula presents the conviction of adaptations of modernism.

• 한국안전학회지
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• 제39권1호
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• pp.70-81
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• 2024

With heavy rainfall due to extreme weather causing increasing damage, the importance of urban flood forecasting continues to grow. To forecast urban flooding accurately and promptly, a sewer network and surface grid with appropriate detail are necessary. However, for urban areas with complex storm sewer networks and terrain structures, high-resolution grids and detailed networks can significantly prolong the analysis. Therefore, determining an appropriate level of network simplification and a suitable surface grid resolution is essential to secure the golden time for urban flood forecasting. In this study, InfoWorks ICM, a software program capable of 1D-2D coupled simulation, was used to examine urban flood forecasting performance for storm sewer networks with various levels of simplification and different surface grid resolutions. The inundation depth, inundation area, and simulation time were analyzed for each simplification level. Based on the analysis, the simulation time was reduced by up to 65% upon simplifying the storm sewer networks and by up to 96% depending on the surface grid resolution; further, the inundation area was overestimated as the grid resolution increased. This study provides insights into optimizing the simplification level and surface grid resolution for storm sewer networks to ensure efficient and accurate urban flood forecasting.

• Journal of Trauma and Injury
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• 제24권1호
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• pp.25-30
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• 2011

Purpose: Major trauma patients should be transferred to a definitive care facility as early as possible because prompt management will prevent death. This study was designed to discover the obstacles leading to delayed transfers under the current emergency medical system in Korea and whether there are any negative outcomes associated with conducting procedures at primary care hospitals prior to transferring patients to higher levels of care. Methods: The medical records of major trauma patients with an Injury Severity Score above 15 within the past year were reviewed. Patients were divided three groups as follows: (A) came directly to our emergency center, (B) were transferred without CT or MRI scan at the primary care hospital and (C) transferred with CT or MRI scans. The transfer time of each group were compared and analyzed statistically. Additionally, the number and type of imaging performed at the primary care hospital were analyzed. Results: All qualified patients (n=276) were enrolled in this study: 121 patients in group A; 104 in group B; 51 in group C. There was a statistically significant difference in the transfer time between the three groups (p-value<0.001), and 79 (28.6%) were transferred to an emergency medical center within one hour. In group C, CT or MRI scans were performed an average of 1.86 times at the primary care hospital, and the median transfer time was 4 hours 5 minutes. Conclusion: Only 28.6% of the cases in the study arrived within the golden hour at a definitive care facility. Such delays are in part the result of prolonged times at the primary care hospital for radiologic examinations, such as CT or MRI scans. Major multiple trauma patients should be transferred to a definitive care facility directly or as soon as the primary survey and the resuscitation of Advanced Trauma Life Support guideline are completed at the primary care hospital.

• 정보처리학회논문지:컴퓨터 및 통신 시스템
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• 제5권9호
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• pp.211-216
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• 2016

최근 전세계적으로 지진, 홍수, 화재 등 재난재해로 인한 인명피해가 늘어나면서 골든타임을 확보하기 위한 기술연구가 활발히 이루어지고 있다. 본 논문에서는 골든타임 확보를 위해 IoT 기술들을 사용해 재난 재해 발생 시 실제 발생원의 사용자를 최우선으로 찾아 전파하며, 주변지역 사용자로 차츰 범위를 확산시켜 전파하는 모델을 연구하였다. 국가 재난 재해 정보는 기상청 OPEN API를 사용하였으며, 해당지역의 세밀한 정보획득을 실시간 수집하기 위해 Crowd Sensing 기술과 BLE (Bluetooth Low Energy) Beacon 기술을 통합 연계한 시스템을 구축하였다. 특히 기존까지 기지국 기반 CBS를 사용하였다면 본 논문에서는 Beacon을 이용한 사용자 위치와 국가행정주소체계 네가지를 통합한 DB를 설계하여 맵핑함으로써 지역 사용자를 추정할 수 있게 되었다. 실험은 사용자의 수를 1천명씩 증가하는 방식을 통해 정보 확산 알고리즘의 정확도와 속도를 측정하였으며, 최종 2만명의 인원까지 1초 이내 연산하여 위험 전파 알림이 가능함을 확인하였다.

• 한국잡초학회지
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• 제30권3호
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• pp.282-290
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• 2010

본 연구는 벼 친환경재배에서 왕우렁이의 크기, 투입시기 및 투입량에 따른 잡초방제효과와 벼에 대한 피해율을 구명하여 가장 적합한 잡초관리법을 찾고자 수행하였다. 이앙 후 5, 10 및 15일에 투입한 왕우렁이에 의한 잡초방제 효과는 각각 98%, 89% 및 58%로서 투입시기가 늦어질수록 잡초방제 효과는 낮아지는 경향을 보였다. 또한 왕우렁이 단독처리보다는 쌀겨와 체계처리시 잡초방제 효과는 증가되는 것으로 나타났다. 왕우렁이의 투입시기가 늦어질수록 방제가 어려운 잡초는 여뀌, 피, 올챙이고랭이, 물달개비 등이었다. 효과적인 잡초방제를 위해 적합한 왕우렁이 중패의 투입시기 및 투입량은 이앙 후 5일 이내에는 3kg $10a^{-1}$, 이앙 후 10일에는 6~7kg이었고 이앙 후 15일에는 7kg이었다. 따라서 왕우렁이 투입시기가 늦어질수록 투입량을 늘려야 할 것으로 기대된다. 왕우렁이 치패의 투입시기 및 투입량은 써레질 직후에 1kg(2,000개) $10a^{-1}$이었으며 피, 물달개비, 여뀌바늘, 알방동사니, 미국외풀, 올챙이고랭이, 올방개, 벗풀 등 모두 100% 방제가 가능하였다. 왕우렁이 중패(3kg $10a^{-1}$)에 의한 벼의 하위엽 및 분얼경에 5~7% 정도 피해가 나타났으며, 치패 1kg(2,000개) $10a^{-1}$의 경우는 묘령에 관계없이 벼의 하위엽에 1%정도의 피해를 보였다. 그러나 왕우렁이의 크기나 투입량별로 처리한 후 조사한 벼의 초장과 분얼수에는 유의적인 차이를 보이지 않았다. 따라서 친환경벼 재배지에서 잡초방제효과, 벼 피해율 및 왕우렁이 비용 등을 고려할 때 왕우렁이 치패 1kg $10a^{-1}$(2,000개)를 써레질 직후에 투입하는 것이 가장 적합할 것으로 판단되었다.

• Journal of Mechanical Science and Technology
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• 제14권9호
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• pp.1005-1012
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• 2000

Numerical optimization techniques combined with a three-dimensional thin-layer Navier-Stokes solver are presented to find an optimum shape of a stator blade in an axial compressor through calculations of single stage rotor-stator flow. Governing differential equations are discretized using an explicit finite difference method and solved by a multi-stage Runge-Kutta scheme. Baldwin-Lomax model is chosen to describe turbulence. A spatially-varying time-step and an implicit residual smoothing are used to accelerate convergence. A steady mixing approach is used to pass information between stator and rotor blades. For numerical optimization, searching direction is found by the steepest decent and conjugate direction methods, and the golden section method is used to determine optimum moving distance along the searching direction. The object of present optimization is to maximize efficiency. An optimum stacking line is found to design a custom-tailored 3-dimensional blade for maximum efficiency with the other parameters fixed.

• 대한안전경영과학회지
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• 제17권1호
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• pp.21-32
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• 2015

High rising of the buildings offers a number of risk factors than ever before with regard to fire prevention. Especially in the construction site of high-rise buildings, people waste golden-time during the evacuation because temporary fire fighting facilities are not installed and transferred to a large fire because of fire suppression failure. In this study, the researcher derives the problems of fire protection in high-rise buildings construction sites and proposed the measures in such the legal aspects as fire building construction code and etc. There are the legal improvements such as orders of construction suspension in the problems of fire safety, appointing fire safety manager, temporary fire protection installation standards, enhancing penalty provisions regarding the use of fire, operating self fire brigade, confirming on-site after completing fire-protection facalities, establishment or strengthening special fire-protection investigations.