• Proceedings of the Computational Structural Engineering Institute Conference
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• 2005.04a
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• pp.291-294
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• 2005

본 해석은 제철용 고로 구조물에 대해여 고로 내의 온도 분포를 이용한 열전도 유한요소 해석을 수행하고자한다. 해석모델인 고로는 내화벽돌, 냉각판, 내화재(castable), 철피의 복잡한 구조로 이루어져있다. 각각의 재료뿐만 아니라 고로에 사용되어지는 모든 내화벽들의 재료 물성치 값을 사용하여 보다 실직적인 해석을 수행하고자 하며 고로의 냉각 시스템인 냉각판과 냉각 pipe의 효과 규명하고자 한다. 어떠한 부분 모델이 아니라 고로 전체를 대상으로 열전도 해석을 수행한다.

• Korean Architects
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• s.630
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• pp.16-21
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• 2021

서울 용산구 한강대로에 위치한 529제곱미터 규모의 2층 사옥 '유신재'. 일제강점기 시절 건설된 벽돌(연와조)과 철근콘크리트조, 목조 트러스 지붕 구조의 이 낡은 건물은 준공(1926.06.23)된 지 90년이 훌쩍 넘었으며, 건물주인 (주)유신이 역삼동으로 사옥을 이전한 후 30여 년간 문서보관소로 사용돼왔다. 그런 이 건물이 지난 4월부터 8월까지의 공사를 거쳐 유신건축(주.유신건축 종합건축사사무소)의 사옥으로 새롭게 태어났다. 근 100여 년의 흔적을 그대로 간직한 건물의 리모델링 설계자는 유신건축의 김지덕 건축사(부(父))·김우영 건축사(자(子)/ 영국왕립건축사) 부자(父子)다. 지난 9월 24일, 유신재에서 함께 일하고 있는 두 부자 건축사의 이야기를 직접 들어보았다.

• Journal of Korea Multimedia Society
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• v.15 no.4
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• pp.425-438
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• 2012

In this paper, We propose Augmented Reality (AR) System for the interaction between user's hand motion and virtual object motion based on computer vision. The previous AR system provides inconvenience to user because the users have to control the marker and the sensor like a tracker. We solved the problem through hand motion and provide the convenience to the user. Also the motion of virtual object using a physical phenomenon gives a reality. The proposed system obtains geometrical information by the marker and hand. The system environments like virtual space of moving virtual ball and bricks are made by using the geometrical information and user's hand motion is obtained from the hand's information with extracted feature point through the taping hand. And it registers a virtual plane stably by getting movement of the feature points. The movement of the virtual ball basically is parabolic motion with a parabolic equation. When the collision occurs either the planes or the bricks, we show movement of the virtual ball with ball position and normal vector of plane and the ball position is faulted. So we showed corrected ball position through experiment. and we proved that this system can replaced the marker system to compare to jitter of augmented virtual object and progress speed with it.

• Resources Recycling
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• v.19 no.2
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• pp.10-18
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• 2010

This research investigates the feasibility of ceramic specimens made from Primary clay and Red Hwangto with MSWI fly ash. Specimens preduced by mix-design maximum 20 wt% MSWI fly ash were analysed by SEM, UTM, ICP, etc. As a result of measurement,$P_{10}$ specimen was improved on bending strength and $R_5$ specimen was improved on compressive and bending strength. Also amount of extracted heavy metal was suitable for regulatory limits. This indicates that MSWI fly ash is indeed suitable for the partial replacement of ceramic materials in bricks.

• Journal of the Korean Institute of Rural Architecture
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• v.14 no.4
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• pp.97-105
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• 2012

Winsborough Hall built by Martin L. Winehart who was the missionary of the Presbyterian Church of America in 1927 was built by Mrs. Winsborough's birthday contribution. Winsborough Hall was clearly divided into the original form built in 1927 and remodelled form by extension. Most of walls were constructed with several kinds of bricks for both sides and opening in the original form and remodelled form. Each room divided by inner wall was kept with original form because it is difficult to remodel it on the characteristics of building. But, it was confirmed through the related literatures that security of opening at some rooms and annexation of rooms through removal of the wall on the 2nd floor which was relatively easy to transform wall compared to the first floor were made. Variability of the wall affected the truss structure of roof and it created rare double truss structure. Architectural value of Winsborough Hall was in its first architectural trial using red brick in Gwangju region since 1920s. It suggested that it was differential architectural trial from Korean-Western mixed building constructed by the missionaries from 1940 to 1910 and buildings made of gray bricks prevailed from 1911 to 1920 and it showed the advancement in the architectural structure and materials.

• Proceedings of the KAIS Fall Conference
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• 2009.12a
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• pp.885-888
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• 2009

자동차용 Alloy Wheel은 차량의 수직하중이나 가로 방향 하중, 구동, 제동토크 등 주행 시에 발생하는 여러 형태의 응력을 받으면서 사용되므로 이러한 응력을 견딜 수 있는 강성은 물론 차량 부품으로서의 요구 수명도 만족하여야 한다. 알루미늄 휠은 개발 후 규격에 준하는 내구성 평가를 위하여 반경 방향 부하 내구시험과 굽힘모멘트 내구시험과 주행 중 요철이나 벽돌 등에 의한 노면으로부터 갑작스런 하중에 대한 내충격성 평가를 위한 충격시험이 실행되고 있다. 이러한 시험은 많은 시간이 소요되고 있으며, 또한 시험 중 불합격 판정이 날 경우 또다시 처음의 공정을 모두 거쳐 다시 시험을 하게 된다. 3 Piece와 같은 알루미늄 휠은 여러 공정에 의한 생산되어지기 때문에 많은 시간적, 물질적 손실이 일어나고 있다. 따라서 자동차용 알루미늄 휠의 요구조건을 충분히 만족시키며 소비자의 요구에 맞는 품질과 시간을 충족시켜 기업경쟁력 확보는 물론 원가절감에 의한 기업 경쟁력 향상을 위하여 설계 단계서부터 시험조건을 고려한 내구성 해석에 의한 알루미늄 휠의 시험횟수를 단축하고자 한다. 본 논문에서는 3 Piece 알루미늄 휠의 축(shaft)하중에 의한 내구성 평가에 대하여 CAE시스템을 이용하여 보다 빠르고 정확한 결과를 산출함으로서 설계시간의 단축은 물론 다양한 형상의 제품들을 설계단계에서부터 생산에 이르기까지의 해석활용법을 수립하고자 하였다.

• Korean Institute of Interior Design Journal
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• v.21 no.3
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• pp.67-75
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• 2012

This Study is concerned with the Design Characteristics of Korean, Chinese and Japanese brick church architecture. The main subject of the study is to investigate the commonness and difference between Korean, Chinese and Japanese brick church architecture in the early stage(1880-1920). In carrying this study into execution, I examined the architectural and historical backgrounds based on the preceding research works, and analysed the plan, the spacial composition, design elements, techniques and materials, etc. The result of this study is as follows ; The basic concept of composition of space is same in order to embody the Basilican space, but the inner elevation and detail of brick structure is different. Chinese churches are more close to Western basilican style church in the point of shape and plan, but in the point of inner elevation and decoration of church, Japanese churches are more close to Western style church. Korean churches are in the middle of its. There are different attitudes of naturalization of western church architecture in Korea, China and Japan.

• Radiation Oncology Journal
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• v.14 no.1
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• pp.77-85
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• 1996

Purpose : Multileaf collimator(MLC) is very suitable tool for conformal radio-therapy and commissioning measurements for a multileaf collimator installed on a dual energy accelerator with 6 and 10MV photons are required, For modeling the collimator with treament planning software, detailed dosimetric characterization of the multileaf collimator including the penumbra width, leaf transmission between leaf leakage and localization of the leaf ends and sides is an essential requirement. materials and Methods : Measurement of characteristic data of the MLC with 26 pair block leaves installed on CLINAC 2100C linear accelerator was performed. Low sensitive radiographic film(X-omatV) was used for the penumbra measurement and separate experiments using radiographic film and thermoluminescent dosimeters were performed to verify the dose distribution, Measured films were analized with a photodensitometer of WP700i scanner. Results : For 6 & 10 MV x-ray energies, approximately $2.0\%$ of photons incident on the multileaf collimator were transmitted and an additional $0.5\%$ leakage occurs between the leaves. Localizing the physical end of the leaves showed less than 1mm deviation from the $50\%$ decrement line and this difference is attributed to the curved shaped end on the leaves One side of a sin히e leaf corresponded to the $50\%$ decrement line, but the opposite face was aligned with a lower value. This difference is due to the tongue and groove used to decrease between leaf leakage. Alignment of the leaves to form a straight edge resulted larger penumbra at far position from isocenter as compare with divergent alloy blocks. When the MLC edge is stepped by sloping field, the isodose lines follow the leaf pattern and Produce scalloping isodose curves in tissue. The effective penumbra by 45 degree stepped MLC is about 10mm at 10cm depth for 6MV x-ray. The difference of effective penumbra in deep tissue between MLC and divergent alloy blocks is small (5mm). Conclusion : Using the characteristic data of MLC, the MLC has the clinlical acceptability and suitability for 3-D conformal radiotherapy except small field size.

• Korean Journal of Heritage: History & Science
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• v.46 no.4
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• pp.4-23
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• 2013

Songsalli Ancient Tombs of Gongju consists of seven tombs. King Muryeong's tomb, the seventh tomb, is a brick chamber tomb discovered during the drainage works for the fifth and the sixth tombs in 1971. The excavation at the time focused on topographic surveys of the tomb entrance and the inside of the burial chamber as well as collection of the remains. The burial mount survey confirmed the status of some stone slab remaining and lime-mixed soil layers, but the survey did not examine the exterior structure of the whole tomb as the mounds were removed even more deeply. The excavation revealed damages to the bricks and mural damages due to moisture and fungus in the sixth and the seventh tombs. Between 1996 and 1997, Gongju National University conducted a comprehensive detailed survey of Songsalli Ancient Tombs including a geophysical survey, with an aim to identify the root causes of such degradation. Based on the results, repair took place in 1999 and the fifth, sixth and seventh tombs were placed under permanent conservation to conserve the cultural assets. General public is currently denied access. The purpose of this study was to conduct a three-dimensional resistivity and GPR surveys on the ground surface of the fifth, sixth and seventh tombs of Songsalli Ancient Tombs in order to understand the underground status after repair. The study also aimed to understand the thickness of all the tomb walls and exterior structure based on GPR inside King Muryeong's tomb. The exploration on the ground surface found that the three tombs and soil adjacent to the tombs had resistivity as low as 5 to $90{\Omega}m$, which confirmed that the soil water content was still as high as that prior to the repair work. Additionally, GPR found that the wall construction of the burial chamber of King Muryeong's tomb was approximately 70cm in thickness, while the structure was of 2B with two bricks, about 35cm in length, put together longitudinally(2B brick masonry). The pathway to the burial chamber was of the 2B structure just like that of the burial chamber walls, while its thickness was 80cm with an eyebrow-type arch connected to it. Also, the ceiling exterior appears to have an arch structure, identical to the shape inside.

• Journal of Korean Society of Rural Planning
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• v.18 no.4
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• pp.61-67
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• 2012

Recently, brick walls are being widely introduced in rural areas. Walls are a very important design element of space. However, most brick wall works do not consider the human psychological characteristics. The purpose of this study was to investigate psychological characteristics on brick wall bonds such as the stack bond, running bond, english bond, flemish bond, america bond. The results of the research can be summarized as follows: 1)There is no statistical difference of psychological evaluation results among student groups using the semantic differential scale method using 10 adjectives. 2)Stack bonds have an uninspiring, artificial, simple, restful, boring and ordered psychological characteristic. Running bonds have an uninspiring, restful and ordered psychological characteristic. America bonds have a unique and modernistic psychological characteristic. English bonds have a unique, modernistic, complex and chaotic psychological characteristic. Flemish bonds have no critical psychological characteristics. 3)The running bond earned the highest score in preference, while the stack bond scored the lowest. Employment of brick wall bonds on this study was not highly preferred, hence it is necessary to develop a new brick wall bond design. 4)In conclusion, the proper selection of brick wall bonds is very important and we should consider human psychological characteristics in the design of rural areas.