• 융합보안논문지
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• 제14권3_2호
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• pp.93-98
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• 2014

최근 서울 시민을 대상으로 한 설문조사에서 환경 문제 해결, 교통 체계 개선과 함께 범죄 예방에 관한 요구가 가장 높게 나타났다. 그 중에서도 가족과 함께하는 주거 지역의 범죄 예방에 대한 요구는 다른 어느 항목보다 더 중요한 것으로 나타났다. 범죄 발생률은 주로 노후화 된 주거 지역에서 높게 나타나는데, 이는 범죄와 물리적인 환경 요인의 관계를 나타내 주는 것이라 할 수 있고, 주변 환경에 대해 적절한 조치가 범죄를 예방할 수 있다는 것으로 이해될 수 있다. 각종 범죄로부터 안전할 수 있도록 하는 다양한 예방법이 있지만 우리 주변의 물리적인 환경을 개선함으로써 범죄를 사전에 차단하고 예방할 수 있다는 CPTED는 이러한 측면에서 가장 주목받고 있는 방법 중 하나이다. CPTED의 기본 원리는 자연감시, 접근통제, 영역성 확보의 기본 원리와 활동성 강화, 유지 관리의 부가 원리로 구성된다. 본 연구의 목적은 도심지 내 노후화 된 공동주택 단지를 대상으로 CPTED의 원리를 적용하여 범죄 발생률을 떨어뜨리고 사전에 예방할 수 있는 방안을 제시하는데 있다.

• KIEAE Journal
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• 제13권1호
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• pp.93-100
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• 2013

A outdoor space of the brand apartment can improve the quality of the whole environment in apartment and has differentiated identity in apartment housing through various versions of the green space and water space plan. The purpose of this study is to evaluate nature-friendly design characteristics in brand apartments and to offer a basic information for planning of brand apartment. In concrete, nature-friendly design did by green space and water space that can analyze by visual, and investigation contents divided to position, form, user behavior, link space from user viewpoint by case study. This study examined a case of eight brand apartments located in Gangnamgu, Seoul. We has divided the characteristics of a green space into horizontal type, vertical type, multi-dimensional type and has divided the water space into stagnant water type, flowing stream type, waterfall type and fountain type. The findings are summarized as follows: First, in case of the space of brand apartment, the application of horizontal and vertical greenery was lower compare with multi-dimensional green space. The most of items for multi-dimensional greenery have been planned to the open space and promenade. Second, a stagnant water type of water space features well used in most of the cases but a water space of signs of activity like a flowing stream, waterfall, fountain types were underused because of problem of administrative and maintenance expenses. Thirdly, Water space of brand apartments was planned with specialization item by apartment housing but green space does not have differentiated item and was planned by most similar form.

• 한국실내디자인학회논문집
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• 제22권5호
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• pp.3-10
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• 2013

The principle of aging-in-place should be fundamental in designing post-retirement homes to support baby boomers' healthy aging in their current living conditions. This study investigated Korean-American baby boomers' opinions about their life images in their post-retirement homes and the needs for supportive services therein. A questionnaire survey was conducted, and a total of 247 responses were used for statistical analyses. As the most important life image for their post-retirement homes, baby boomers emphasized the living environments offering various recreational activities. They indicated the post-retirement homes close to their children or family members as the next important life image. These opinions differed depending on their socioeconomic characteristics. In particular, baby boomers with higher-income preferred housing environments offering diverse recreational activities while those with lower-income preferred the housing close to more employment opportunities. In terms of supportive services available in the post-retirement homes, they wanted 'healthcare assistance services' and 'diverse recreational programs.' Gender, educational attainment, and annual income affected their preferences in these services, though. Based on the findings, this study concluded that post-retirement housing environments should create spaces to accommodate various recreational activities and include places for them to work in near-home environments. In the community, various need-based customized recreational activities and educational programs should be planned considering different socioeconomic characteristics of baby boomers. All these considerations will provide supportive residential environments for their successful aging in place.

• 한국생활과학회지
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• 제17권5호
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• pp.1001-1013
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• 2008

The purpose of this study were to make clear the actual state of indoor air quality by cooling in private institute classrooms and to analyze influencing factors on indoor air quality. The measurements of physical elements and observations of architectural characteristics and living conditions were carried out in each 1 classroom of 5 private institutes. Measuring elements were indoor temperature, relative humidity, $PM_{10}$, HCHO, CO, and $CO_2$ concentration. As results, the averages of indoor temperature each classroom were $21.7\sim28.1^{\circ}C$. 3 classrooms were lower than the Maintenance standard($26\sim28^{\circ}C$) of School Health Law. The means of relative humidity were 48$\sim$63%, all classrooms were ranged within the standard(30$\sim$80%). The means of $PM_{10}$ concentration were 2.1 $\sim$ 17 $\mu g/m^3$, all classrooms were kept within the standard(100 $\mu g/m^3$). The means of HCHO concentration were 0.02$\sim$0.16 ppm, 2 classrooms were exceed the standard(0.1 ppm). The means of CO concentration were 1.4$\sim$3.6 ppm, all classrooms were kept within the standard(10ppm). The means of $CO_2$ concentration were 1,593$\sim$3,819 ppm, all classrooms were exceed the standard(1,000ppm). The results of analysis on influencing factors of the physical elements are as follow; the air conditioner set of temperature, personal necessities like hair spray, teacher's smoking in corridor, windows and doors opening time, the number of students, and volume of classroom.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.1039-1042
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• 2007

경제성장으로 자동차 보급률이 증가하여 주차공간에 대한 수요가 높아지고 있다. 개인당 보유 차량의 증가는 공동주택 내에서의 주차장 부족현상을 심화시켰고 노후 공동주택은 준공 당시의 법령에 의한 주차계획으로 심각한 주차난을 겪고 있다. 이에 따라 주차장확대에 대한 거주민의 요구가 커지고 있으며, 이러한 주차장 부족문제를 개선하기 위한 방법으로 주차장확대에 대한 연구가 다양한 방법으로 이루어지고 있다. 주차장확대는 단지의 특성에 의해 적용기술과 공법이 제한될 수 있으므로 본 연구에서는 노후 공동주택 단지의 특성을 세대수, 층수, 동수, 인동간격, 대지형태, 평면형태로 구분하여 조사하였다. 공동주택 단지의 특성을 조사${\cdot}$분석한 결과 세대수는 300세데 이하가 35%, 인동간격은 41${\sim}$50m인 단지가 23%, 대지형태는 평지에 위치한 단지가 82%로 각각 가장 많은 비율을 차지하였다.

• 한국소음진동공학회논문집
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• 제13권5호
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• pp.357-363
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• 2003

There have been lots of studies on noise transmission analysis and noise reduction In ducts. In order to reduce the noise transmission in ducts. active noise cancellation techniques have often been employed and a rotation shaft with blades has sometimes been suggested. These Ideas were not successfully commercialized because of the limitation of real life such as size or application difficulties. This study investigated how a rotational shaft with blades could reduce the noise transmission in a duct. To do so, an assembly of the shaft and the $haft housing was built In the middle of a duct. and the clearance between the blades and the housing was 0.2 mm. The noise reduction was experimentally evaluated with respect to the number of blades. the rotation speed, and the rotation or stop. This paper showed that the noise reduction resulted in about 14∼19 dBA regardless of the three test conditions only If the blades always blocked the duct. And. the noise reduction increased due to the higher number of blades and the lower speed of the shaft.

• Journal of the Korean Wood Science and Technology
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• 제40권5호
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• pp.311-318
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• 2012

This study investigated the flame retardant performance of developed four types of flame retardant chemicals (FRC), FRC-A, B, C and D. Four kinds of soft wood species, Sugi (Cryptomeria), Spruce (Picea abies), Hinoki (Chamaecyparis obtusa) and Korean pine (Pinus koraiensis), were used. The wood specimens were treated by spreading the FRC on the surface with different quantities, 30, 50, 70, 90, 110 g/$m^2$, respectively. The charred area, charred length, after flame time and after glow time were tested. And their suitabilities as incombustible materials were evaluated. The specimen treated by FRC-D showed better incombustible properties than others, even though with lower quantity. Therefore it is supposed that the FRC-D could be able to be applied on the cultural heritage, such as Korean wooden house for preventing fire.

• 제어로봇시스템학회논문지
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• 제21권12호
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• pp.1122-1129
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• 2015

This paper suggests a method of detecting traffic lights for vehicles by combining the HSV(hue saturation value) color model, morphometric characteristics, and location information appearing on consecutive images in daytime. In order to detect the traffic light, the color corresponding to the signal lights should be explored. It is difficult to detect traffic lights among colors of lights from buildings, taillight of cars, leaves, placards, etc. The proposed algorithm searches for the traffic lights from many candidates using morphometric characteristics and location information in consecutive images. The recognition process is divided into three steps. The first step is to detect candidates after converting RGB channel into HSV color model. The second step is to extract the boundaries between the housing of traffic lights and background by exploiting the assumption that the housing has lower brightness than the surrounding background. The last step is to recognize the signal light after eliminating the false candidates using morphometric characteristics and location information appearing on consecutive images. This paper demonstrates successful detection results of traffic lights from various images captured on the city roads.

• 한국주거학회논문집
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• 제27권6호
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• pp.19-29
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• 2016

As a lifeway and social change, the neighborhood build up around elementary school based on Perry's Neighbourhood Unit becomes change. Elementary School does not function as a center of residents' activity or community any longer. Activities occurred near the school move to the community streets that many facilities are distributed to, while utilization of facilities near schools becomes lower. On the bases of the current states, this study aims to draw a practical neighborhood center of residential areas by case study. The research is being mainly about low-rise residential areas in Seoul which includes one elementary school at least. In order to deduct the center of neighborhood, the survey takes two steps. At the preliminary survey, conduct the observation and do an interview to investigate awareness and actual status. Also to analyze practical center, do a main survey about land value, pedestrian volume, distribution of public transit and facility density. The research result shows that there is another activated center street not nearby elementary school in every case. This study assumes that the neighborhood center is not limited around elementary school and could variously build up by circumstances. It has significance that we present a question about the traditional theory and also could be references of the future city maintenance in the long term.

• 한국주거학회논문집
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• 제21권6호
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• pp.71-80
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• 2010

The purpose of this study is to classify defects of the residential building by analyzing the defect specified by prequalification of residential building reconstruction and to suggest the solution of the problem which can be arisen during each stage of plan, construction and maintenance. By sorting the main defects which is specified by pre-qualification of residential building reconstruction for three years from August 2006 to August 2009 into 4 catagories and analyzing the cause of the defects, we draw the way of maintenance to prevent the defects and make pleasant residential environment. The reason for the frequent defects from residential building is mainly deterioration. It occured on the finishing more than on the structure, which means that residents can find defects easier on the finishing than the structure and clear the demand for repair. The result of analyzing of pre-qualification of residential building reconstruction is that the defects mostly caused small, masonry constructed and lower apartment. The apartment which is not into legal right for maintenance naturally have more defects than the others. In conclusion, it is necessary to establish a law of obligation duty of the maintenance of small apartment.