• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.23 no.3
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• pp.261-272
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• 2005

3D models in urban areas are essential for a variety of applications, such as virtual visualization, GIS, and mobile communications. LIDAR (Light Detection and Ranging) is a relatively new technology for obtaining Digital Terrain Models (DTM) of the earth's surface since manual 3D data reconstruction is very costly and time consuming. In this paper an approach to extract ground and non-ground points data from LIDAR data by using filtering is presented and the accuracy for generating DTM from ground points data is evaluated. Numerous filter algorithms have been developed to date. To determine the performance of filtering, we selected three filters which are based on the concepts for height difference, slope, and morphology, and also were applied two different data acquired from high raised apartments areas and low house areas. From the results it has been found that the accuracy for generating DTM from LIDAR data are 0.16 m and 0.59 m in high raised apartments areas and low house areas respectively. We expect that LIDAR data is used to generate the accurate DTM in urban areas.

• The Journal of the Korea Contents Association
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• v.17 no.11
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• pp.39-49
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• 2017

Opening of a new economic paradigm in the transition to the Fourth Industrial Revolution, the human capital engaged in industry or occupation based on individual creativity is called creative workers. The workers of this kind regards 'quality of place', known as amenity, as an important factor in choosing a residential area. This paper analyzes how the effect of city amenity influences on residential preference of creative workers in comparison with production workers. First, as of 2014, the total number of creative workers are 5.73 million (23.2% of the total workforce), and more than half (58.6%) are concentrated in Seoul and Gyeonggi area. Second, the excess residence rate of the creative workers (number of residents/number of jobs) is high in metropolitan areas. Third, when comparing with workers in productions sector, the selection of residence location for creative workers are significantly influenced by certain city amenities such as education. The outcome of analysis is expect to be utilized as a preliminary work for making policies which promotes number of creative workers at the regional level.

• Journal of Satellite, Information and Communications
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• v.9 no.1
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• pp.1-5
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• 2014

Recently, building is rapidly develop more intelligently because of the development of industries. And people seek such as comfort, efficiency, and convenience in office environment and the living environment. Also, people were able to use a variety of devices. Smart TV and smart phones were distributed widely so interaction between devices and human has been increase the interest. A various method study for interaction but there are some discomfort and limitations using controller for interaction. In this paper, a user could be easily interaction and control LED through using Kinect and gesture(hand gestures) without controller. we designed interface which is control LED using the joint information of gesture obtained from Kinect. A user could be individually controlled LED through gestures (hand movements) using the implementation of the interface. We expected developed interface would be useful in LED control and various fields.

• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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• 2002.05a
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• pp.131-131
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• 2002

종이가 인류의 생활에 미치는 비중은 정보의 전달을 제 l의 목적으로 사용되고 있는 인쇄용 지와 필기용지가 차지하는 것이 가장 크다. 정보전달의 매개로 사용되는 종이의 용도 이외 의 것을 살펴보면 전사지, 감압.감열지, 절연지,OMR지, 항공권지, 벽지 등과 같은 특수지와 기능지가 있다. 특히 벽지는 다양한 문양과 색감으로 인간의 미적 감각과 정신적 안정감에 미치는 영향이 크다. 벽지의 기능은 여러 가지의 목적으로 우리들의 실생활에 있어서 없어서는 안될 중요한 건축 재료로서 사용되고 있다. 가장 중요한 벽지의 목적은 앞서 언급한 바와 같이 미려한 색상과 다양한 디자인으로 도안.인쇄 및 발포 처리된 벽지를 사용하여 단순한 벽면을 개인의 취향 에 맞게 함으로써 심리적 안정감을 가져옴과 동시에 미적 가치를 증가 시켜 문화 수준의 향 상에도 영향을 미치는 것으로 알려져 있다. 그러나 종이 벽지와 종이 벽지 원지를 기저로 하여 제조된 발포 벽지는 인화성이 강하기 때 문에 이들에 대한 적절한 난연 처리가 요구 되고 있다. 매년 발생되는 다양한 형태의 화재 는 돌이킬 수 없는 인명과 재산의 손실로 귀결되어 각별한 주의가 요구되기 때문에 주거공 간과 대중의 군집이 많이 이루어지는 공공장소에서의 난연 처리된 벽지 사용에 대한 중요성 이 나날이 그 강도를 더 해가고 있는 실정이다. 난연 처리된 벽지는 통상적인 벽지에 비하 여 제조 원가의 상승에 따라 가격이 비싸기 때문에 일반인들에게 있어서 그 사용은 주목할 정도로 증가되지 못하고 있으나, 생활 수준이 향상 될수록 안전에 대한 의식 강화와 정부의 노력으로 인하여 그 사용량은 크게 늘어날 것으로 기대된다. 따라서 본 연구에서는 종이의 제조에 사용되는 원지의 충전제 종류와 양 그리고 난연 처리 된 폴리에스테르 섬유의 혼합을 달리하여 제조된 원지를 사용하여 난연 처려한 후 이들의 인화 특성에 대해 고찰 함으로써 보다 향상된 성능을 발휘 할 수 있는 난연 벽지의 제조와 개발에 보탬이 되고자 하였다.

• Journal of Korea Water Resources Association
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• v.34 no.6
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• pp.587-596
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• 2001

The purpose of this study is to improve inefficient use of rainwater in island area where it uses rainwater to supply the domestic water and to propose rainwater utilizing system that is most appropriate to the characteristics of precipitation in Korea. To accomplish these purposes, Cheju island was chosen as a study area and the design for the roof area and tank size of rainwater utilizing system was based on the result of the relationship between the actual precipitation and domestic water data which was used in the analysis by run theory to use run theory. Since the result of the analysis indicated that the designed rainwater catchment system was operated stably in Cheju island, the same result is expected in other island too. Therefore, if this system is executed together with the roof rehabilitation work of island area, it will bring positive effects on broth the improvement of residental environment and the security of domestic water.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.34 no.4
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• pp.1241-1249
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• 2014

This study presents preferences factors analysis of Car-sharing in Suwon. Approximately, 60% of the citizens prefer car-sharing and consider using it. The results of analysis by factors show higher preferences in these groups of travelers: man, younger, a resident of detached house and efficiency apartment, user of public transportation who finds it uncomfortable, traveler without vehicles, and traveler using car 1 to 3 times a week. The potential demand for car-sharing was highest in the residential areas and around the stations. Travelers prefer to pay the fee by the hour, which the fair value was 7,967 won. For the trip purpose of business, shopping and leisures, car-sharing is more preferred than taxi and rental cars. Findings will contribute to determining the direction of policy for the car-sharing.

• Journal of Families and Better Life
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• v.8 no.1
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• pp.157-170
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• 1990

본 연구는 미 L-A에 거주하는 한국이민 노인들의 특성을 파악하고, 그들의 생활만족도에 기여하는 결정요소들이 무엇인지 가려내며, 그 얻어진 결과를, 동일한 시각과 접근으로 시도되었던 미국 노인들에 대한 선행연구들의 결과와 비교 분석하였다. 연구는 1986년 12월에서 1987년 2월까지 3개월간 미 L-A 카운티에서 거주하는 55세 이상의 한국 이민노인 390명을 대상으로 설문지 조사를 실시하여 그중 192명을 자료분석에 사용하였다. 단계별 중다 회귀분석의 결과, 활동성의 제약정도, 결혼상태, 재정적인 안정, 교육정도, 연령증가 등 5가지 변인들의 특별히 한국노인의 생활만족도가 강한 연관성이 있었고, 반면 자신들이 평가한 건강상태, 지인과의 사회적인 상호작용, 미국거주 년한 등은 노후생활의 안녕에 전혀 직접적인 영향력을 행사하지 못했다. 그러나 자신들이 평가하는 건강상태는, 활동성의 제약 등과 같은 다른 변인에 미치는 효과를 통해서 생활만족도에 간접적으로 강하게 영향을 미치고 있었다. 이러한 결과를 선행연구에서 나타난 서구나 미국노인의 생활만족도 결정의 세 요인인 건강상태, 사회경제적 지위, 사회적 활동성과 비교해 볼때, 사회적 활동성과 연령증가 변인에서 서로 상반되는 대조를 보이고 있었다. 즉, 백인노인들은 나이가 듦에 따라 생활만족도가 낮아지거나 혹은, 연령증가와 생활만족도 사이에 별로 유의할 만한 관계를 보이지 않고 있으나, 본 연구에서의 한국노인은 나이를 먹으면서 오히려 생활만족도가 높은 것으로 나타났다. 한편, 사회적 활동성은, 백인노인의 생활만족도에 긍정적 혹을 부정적으로 가장 강하게 영향을 미치는 요인중 하나임에 반하여, 한국노인들은 이것이 자신들의 생활만족에 중요한 것이라 믿고는 있었지만 실제 통계학적으로는 영향력을 행사하지 못하는 요인이었다. 주거환경(자식과의 동거여부) 역시, 이제껏 한국사회에서 기대되어왔던 통념과는 달리, 한국노인의 생활만족도에 아무런 영향을 주지 못하고 있었다.

• Spatial Information Research
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• v.2 no.2
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• pp.189-196
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• 1994

Adaptive smoothing filter is a filter that averages out the intensities around the pixels of similar intensities while conserving the discontinuties. When human eyes rec-ognize a map, the brain can easily assign one color for each element such as road or building while computer distinguishes all the minute color differences even for one ele¬ment. We can approach to the solution by using the adaptive smoothing filter so that the machine can assign one color for each element as much as we want, and it is found to be a very essential tool foor map segmentation of urban areas. The filter is applied to a scanned map, and it is used to extract roads and residential areas.

• Solar Energy
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• v.18 no.2
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• pp.19-29
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• 1998

Solar energy is a quantitatively unlimited, clean and non-pollutant source. It has a great potential for industrial commercial usages. For example, solar hot water system for domestic usage has been very popular in many counties. In Korea, the industries consume 47.7% of the total national energy, and the manufacturing sector uses 91.5% out of it. The main energy resoures available in Korea are oils, coals, and gases. There have been continuous efforts among the industries to reduce such energy consumptions by using alternative energy resources, such as solar energy, yet the technology has limited its proper applications to a level of satisfaction. In some advanced countries, research and development programs in solar energy applicable to the industrial usages are very active, and some systems are in the commercial market. Therefore, this paper describes the status and the feasibility for high-efficiency evacuated solar collector which was anticipated to applied for industrial process heat as an alternative of fossil energy.

• Journal of Korean Society for Geospatial Information Science
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• v.21 no.1
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• pp.3-9
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• 2013

Development of housing, industrial and public lands has been a cause to increase a temperature of a city higher than that of a rural area. Knowing that, the research analyzed temperature changes in a riverside district and a coastal area depending on the land usage and climate change in the areas. Add to this, the study examined a correlation between topographic characteristics and temperature changes. According to the results, the temperature was increased by $1.80^{\circ}C$ in 2007 comparing to 2003 while the wind velocity was reduced by 0.24m/s. In addition, a more number of areas were designated as build-up areas which, in return, decreased the forested land. The analysis on the correlation reported that the riverside district has more of grassland and bare land while the coastal area has more of wooded land and grassland. The study is expected to be used as fundamental data for research on heat island effect which would be different by each regional characteristic as it proposes measures to solve the heat island effect.