• 한국주거학회논문집
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• 제18권1호
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• pp.123-129
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• 2007

The purpose of this study was to suggest the idea for IAQ improvement of the of officetel which is used by fully or partly residential space. The data was collected from 110 residents by questionnaire survey and an experienced architect by personal interview. The results showed that the IAQ improvement of the officetel with residential usage and residence was urgent. The educational program about maintenance of IAQ for residents was essentially needed. To recommend eco-friendly materials in process of construction was important so as to take precaution against 'sick building syndrome'. It was also necessary to improve on the size, shape, and location of ventilation window.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집A
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• pp.698-703
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• 2001

This paper is concerned with the nonlinear hyperelastic problem fur the incompressible characteristics of the rubber. Tension sensor is a strain gage type load cell element for a fence intrusion detection system and consists of the sensing part and the rubber housing. The analysis includes an elastic analysis and a hyperelastic analysis of a tension sensor for the deformed shape and variation of the maximum strain on the sensing part with respect to the vertical load. Numerical results show that the hyperelastic model is stiffer and less deformed than the elastic model. Comparing with the experimental test data, we know the hyperelastic model is the better approximation than the elastic model.

• 한국주거학회논문집
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• 제11권2호
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• pp.13-23
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• 2000

Lived space, i.e. space as we experience it in our mundane life, does not exist independently of material objects: it is defined, delimited and made sensible by them. Concrete spaces so manifest are not sterile and neutral homogeneous voids. Not only do they interact with material objects but also influence our feelings and behaviour, constituting emotionally charged fields. This field dynamics of space is readily observed in the phenomenon of place as well as in the etymology and usage of the word 'place'. Each space is pervaded by a particular mood or atmosphere in accordance with its size and shape as well as with the perceptual properties of its constituent objects. Moreover, within each space the atmosphere also changes depending on the location. Space then can be thought of as a nonhomogeneous field of emotional energy. The fact that one is attracted to some places and repulsed by others may be described as one's being subject to invisible forces of pulls and pushes, attractions and repulsions. Out spatial environment is therefore a field of forces of varying directions and magnitudes.

• 한국기계가공학회지
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• 제21권3호
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• pp.63-69
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• 2022

Compressor efficiency must be improved to reduce refrigerator power consumption. In this study, the heat dissipation rate through the compressor housing is increased via gap flow passages between the compressor body and housing. Four types of gap flow passages are considered for achieving the maximum heat-dissipation rate. In addition, thermal analysis is performed to examine the effect of increased heat dissipation rate on the energy efficiency ratio (EER). The results show that the heat dissipation rate, compressor superheat, and compressor EER increased by up to approximately 52%, 3 ℃, and approximately 1%, respectively.

• 한국주거학회논문집
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• 제11권3호
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• pp.1-14
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• 2000

The purpose of this study is to analyze the characteristics of court type in Urban Detached Houses. This study deals with single-unit Korean houses designed by architects, which are included in architectural periodicals and books published since 1980. The results of this study, the types of houses court plan are obtained from the mass of site and plans shape. There are five types which are Backyard type, Corridor type, Atrium type, Inner garden type, and Dae-chyung-ma-roo type. And 9 plans of Dae-chyung-ma-roo type house are shown in this paper. Especially, Dae-chyung-ma-roo type is outdoor space with over 2 door of the room and that is extended indoor space.

• 대한가정학회지
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• 제43권10호
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• pp.1-23
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• 2005

This study proposes design factors for Korean style ecological apartment for application in Cheongju. Library and internal surveys were performed to summarize the concept of locality in housing and to determine the present condition of apartment estates which were introduced with design factors according to locality, traditionalism, or ecology, fold surveys were carried out at 10 apartment estates to investigate the present condition of management and residents's un. The interviewees were concierges and representative residents. The following design factors for Korean style ecological apartment to be applied in Cheongju were proposed; layout and building shape according to climate as natural environment, landscape factors according to cultural assets as human environment, adolescent spaces according to population as social environment, road plan according to 'Cheongju Garosu-Gil' civil environment.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2006년도 추계학술발표대회 논문집
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• pp.208-211
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• 2006

This study was to find out contemporary planning trends of rural houses in Na-po Munhwa village by analyzing their floor plan shapes and space relations & elements. There were built 240 houses in that village, but it were possible to collect housing data, floor plans & general building records of 120 houses, from house register. By analyzing those data, findings were as follows : 1) Floor plan shapes of rural houses had a tendency to 'ㅋ' shape type than simple box or transformed box types, and Room-Living-Room arrangement of centered living were very strong trends in those plans. 2) Public spaces, L.D.K

• 건축역사연구
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• 제5권2호
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• pp.25-39
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• 1996

Architectural researches on the traditional houses of Korea have been studied mainly based on the data collected in the field survey. From explosively incresed real mesurements and drawings in the field, plenty of data have been collected. Those have been the basic data for verifing and developing the theories on the traditional house. But after Korean war the researchers in South-Korea were not able to approach to the field in North Korea, so the new data of North Korea were not added any more. The poverty of real data have caused regional unbalance in the researches. This paper aims at collecting new data of traditional house in North Korea. But still being prohibited for the researchers of South Korea to approach to the field, I had to depend on the memories and experiences of the immigrants from North Korea who are now living in Kyon-Nam and Pusan Province. Through the questionnaire and drawings, they described vivid memory of their old houses. I was able to collect the data of 71 cases, which are significant and valuable as much as those of the real field are. The data include the address and site condition, family structure, economic condition, construction period of each house, The drawings by themselves show the building forms and plans, the plans of each building, and the included spaces. Although the quantity of those data is not enough for statistical analysis, it shows general tendency for analizing regional charateristics, the differnces among economical classes, and the periodical change. It opens the way for verfying the existing theory. Analizing the data, I have some conclusions as followings: a. Most of researchers have classified the dominant housing type of Hamkyong-Do as 'the double fold' type. In this study, all cases of Hamkyongbuk-do also show 'the double fold plan with Chongju-kan'. But in Hamkyongnam-do some cases show 'the double fold plan without Chongju-kan, or projecting the stable into the yard, which seem to be different type from 'the double fold plan with Chongju-kan' b. Existing theories classified the dominant housing type of Pyongahn-do as 'two buildings with pararell arrangement'. This classification is verified with the plentiful cases in this study. Futhermore, I found new tendency, that is, getting higher econnomic condition, they construct annex buildings between the main buildings. Finally their houses show 'scattered ㅁ shape'. The houses included in this two types has narrow and closed inner yard, which is different from the houses of the same shape in the south region of Korea. c. Existing theories classified the dominant housing type of Hwanghae-do as 'ㅁ sape with Daechong' type. I found many cases of 'ㅁ shape', but only two cases show 'Daechong'. 'The doble fold' type was also founded. Unfortunately very few cases were sent from Hwanghae-do, it is not enough for finding general tendency.

• 한국산학기술학회논문지
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• 제19권1호
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• pp.672-679
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• 2018

본 논문은 최적설계 시스템을 이용한 형상설계 방법론에 대해 설명하고 있으며, 일반적으로 3차원 해석은 설계를 위해 반드시 필요하다. 퍼지지식처리 수법과 계산기하학적 기법에 바탕을 둔 자동화된 유한요소 메쉬 생성 기법은 상용화된 유한요소해석코드와 솔리드모델러와 함께 시스템에 결합되어 있다. 또한, 다층형 신경망의 도움과 함께 개발된 시스템은 다차원 설계변수 공간에 존재하는 여러 만족하는 설계해인 디자인윈도우를 얻을 수 있게 해준다. 개발된 최적화 설계 시스템 사용된 부품을 평가하는데 성공적으로 적용하였다. 사이드 하우징 브라켓을 현장에서 사용되어지는 굴삭기의 힘과 유압브레이커의 작용하는 응력을 응력 게이지로 사이드 하우징 브라켓의 크랙 발생부위에 부착하여 최대응력이 얼마나 걸리는지를 측정하였다. 적용하는 대상을 현장에서와 동일한 조건하에서 최대응력이 허용응력보다 같거나 적게 하고, 기존형상 유지, 재질은 SM490, 중량 최소화 안전계수는 3으로 하여, 최대응력 값에 대한 해석을 수행하였다. 구조가 비교적 간단한 36톤용 사이드 하우징 브라켓을 최적화하였지만, 다른 클래스의(톤수 별) 사이드 하우징 브라켓 적용 시 품질향상에 크게 기여하리라 생각된다.

• Structural Engineering and Mechanics
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• 제6권2호
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• pp.229-243
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• 1998

In this study, a theoretical method to analyze the vibration of a T-type Timoshenko frame is proposed. The effects of axial inertia, rotatory inertia and shear deformation of each branch are considered. The orthogonality of any two distinct sets of mode shape functions is also demonstrated. Vibration of the frame due to moving loads is studied by the method and the response characteristics of the frame are investigated. Furthermore, the effect of column length on the response of the frame is also studied.