• Journal of Broadcast Engineering
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• v.13 no.2
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• pp.236-244
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• 2008

We propose a new building detection and description algorithm for Lidar data and photogrammetric imagery using color segmentation, line segments matching, perceptual grouping. Our algorithm consists of two steps. In the first step, from the initial building regions extracted from Lidar data and the color segmentation results from the photogrammetric imagery, we extract coarse building boundaries based on the Lidar results with split and merge technique from aerial imagery. In the secondstep, we extract precise building boundaries based on coarse building boundaries and edges from aerial imagery using line segments matching and perceptual grouping. The contribution of this algorithm is that color information in photogrammetric imagery is used to complement collapsed building boundaries obtained by Lidar. Moreover, linearity of the edges and construction of closed roof form are used to reflect the characteristic of man-made object. Experimental results on multisensor data demonstrate that the proposed algorithm produces more accurate and reliable results than Lidar sensor.

• Fire Science and Engineering
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• v.23 no.6
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• pp.135-141
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• 2009

The composite truss has been widely used for tall buildings and long-span structures in North America. As compared with other similar structures, it has merits such as reduction of construction period, low span/depth ratio, low dead weight and so on. It has the most effective trait for structures with long span of 12~18m. After collapse of WTC, the fire resistance behaviors of structures have been actively conducted under various fire conditions in several country. This study showed that the surface temperature of steel member in the composit truss beam was reached to $700^{\circ}C$ under the fire condition of a short time. Under the same condition, the temperature in concrete was within $200^{\circ}C$. The composit truss beam with 20mm bracing was collapsed by rapid deflection after about 3minutes. However, the beams with 25mm, 35mm, and 45mm bracing were not collapsed, even though those were reached to deflection standard of L/20 within 15minutes.

• International Area Studies Review
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• v.18 no.3
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• pp.269-291
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• 2014

The purpose of this article is to analyze the tendency and characteristics in armed conflict in post-Cold War era on the basis of Uppsala conflict data program(UCDP) datasets. The collapse of bipolarity and the end of cold War proved a watershed in the dynamics of international conflict. The major shift in the nature of conflict has been away from interstate conflict, leaving intrastate conflict. Major powers have acted carefully against each other and been willing to understand the interests of other to avoid military confrontation and crash. As the means of termination for armed conflict, there is a stronger emphasis on the peace settlement like peace agreement and ceasefire agreement than military victory. Many intrastate conflicts become internationalized, through the involvement of diaspora communities, or regionalized through a spillover effect into neighboring countries. Since the end of the Cold War, the UN has taken a much more active role in conflict management and conflict resolution.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.41 no.1
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• pp.13-20
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• 2021

Recently, various piloti structures have been constructed in Korea to secure residential and parking spaces. However, these piloti structures have been constructed in the form of protruding columns without walls to secure parking spaces on the first floor. In this form, when an earthquake occurs, the column is relatively easily damaged compared to general structures, and such damage can lead to the collapse of the structure. Therefore, in this study, a study on securing the safety of the piloti structure using the MPS (Multi Performance System) seismic isolation device was conducted. Nonlinear dynamic analysis according to the presence or absence of MPS seismic isolation device was performed on the existing piloti structure, and analysis results were compared and analyzed. Finally, each seismic performance evaluation was performed and the superiority of the MPS seismic isolation device was verified.

• Korean journal of food and cookery science
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• v.11 no.5
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• pp.527-535
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• 1995

The sensory and instrumental characteristics of different water to brown rice ratio with pressure and electric cookers were examined. The result of sensory evaluation revealed more significant differences in most of taste, texture, appearance, overall eating quality. The difference of sensory characteristics according to the types of cookers and the difference water to brown rice ratio showed the highest preference nonwaxy brown rice 1.4 and waxy brown rice with pressure cooker The instrumental measurement of cooked brown rice using instron showed that the difference between different water to brown rice ratio and pressure cooker. Especially hardness in instrumental characteristics revealed highly significant difference.

• Archives of design research
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• v.11 no.3
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• pp.25-33
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• 1998

A Study on the Plasticity of the Gather Represented in Haute Couture The Gather is the plastic technique to represent a sense of voluminosity by pleating the plane of costume and manifests the emotional effects , such as both functional aspects and the construction of form, optical illusion effect, textural feelings from materials, tactile transformations, etc. So it is used as the tool to represent the plastistic beauty of costume. The plasticity of the ancient gather was the drape arising according to the curve of the body, but the type of gather recently found on the haute couture does not only retain the activity and functionalism on which the technical element and the ornamental aspect are mixed with other techiques.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.15 no.1
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• pp.91-96
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• 1997

In order to ensure the safety of a structure, it is essential to put in practice all sorts of measurement from the plan and execution to the management by stages. These measurements make it possible to verify a propriety of a plan and forecast an accident or a collapse caused by long lapse of time, making use of accumulated data. Close-Range Photogrammetry is a method to meet improvement and development of surveting technique. which offered data for maintenance and management of a structure. Dus to applying this way. reliance on measuring a variation of structure. Besides, data of variation will be utilized for maintenance and management of a structure.

• Applied Biological Chemistry
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• v.29 no.4
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• pp.339-345
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• 1986

Rheological characteristics of starch isolated from germinated corn were investigated and compared with those of nongerminated corn starch. Flow behavior of both starches were Bingham psudoplastic. Consistency index and yield stress of germinated starch solution were lower than those of nongerminated starch solution, while flow behavior index was nearly similar. Concentration dependency of both starch solutions were similar to each other but lower temperature dependency of germinated starch solution was observed. Time dependent characteristics of both starches showed thixotropic behavior, but due to germination, germinated starch showed higher structural decay under shear than nongerminated starch and its elastic properties was weaker.

• 한국방재학회:학술대회논문집
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• 2011.02a
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• pp.210-210
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• 2011

자연 상태의 하천은 대부분 다수의 지류가 본류로 유입되는 복잡한 하천형태를 보이고 있다. 두 개의 수로가 합쳐지는 합류부에서의 수리특성은 홍수 시 제방붕괴나 범람 등의 피해에 직접적인 영향을 주고 있다. 특히 지류와 본류의 유량비가 급격히 변하거나, 지류의 접근 각도에 따른 유속차이로 인해 생기는 합류부 정체구간의 특징이 매우 복잡하기 때문에 세심한 검토가 필요하다. 본 연구에서는 본류와 지류의 유량비와 지류의 유입각도에 따라 발생하는 합류부의 흐름특성을 살펴보기 위해 CCHE2D 모형을 이용하여 수위, 유속 변화를 분석하고자 하였다. 이를 위해 지류의 유입량은 본류의 10%, 20%, 30%, 40%, 50%로 변화를 주었으며, 지류의 합류 각도를 $45^{\circ}$, $90^{\circ}$, $135^{\circ}$로 변화를 주었다. 이와 같은 합류부에서 발생 가능한 수리특성의 분석 결과는 집중호우로 인한 하천의 재해방지에 기여할 것으로 기대한다. 이와 같은 합류부에서의 수리학적 특성을 살펴보기 위해 본 연구에서는 가상하도로 이루어진 합류부에 대해 2차원 수치해석 모형을 적용하여 본류와 지류의 유입각도와 유량비에 따라 발생 가능한 본류와 지류의 흐름특성을 분석하고자 한다.

• The Journal of Korean Academy of Prosthodontics
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• v.58 no.1
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• pp.35-41
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• 2020

Patients with collapsed occlusal support and unilateral chewing show parafunctional mandibular movements, which can be complicated in older patients. Gothic arch tracing and split cast technique are used to confirm the deviation between centric relation and anterior habitual bite in patient who has oral dyskinesia and collapsed occlusion. Temporary denture as occlusal stabilization appliance was provided for stable occlusion and reproducible mandibular movement. Definitive denture was fabricated by lingualized occlusion concept.