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오재화,김우혁 朝鮮大學校 建設技術硏究所 1999 建設技術硏究 Vol.19 No.2
The problems of over population in large cities and over outflow population in small and medium sized cities, and the difference of growth and unbalanced development between them occurred as a big social issue. Accordingly, the interests are concentrating on the basic reinforcement and functional activation of local small and medium sized cities I can assert that it is the optimum time to smooth out difference between regions, to activate local small and medium cities at this time. Because the recognition against polarization reversal on the dispersal policies than the first stage of the powerful trend of concentrative development. The basic goal of this treatise puts on emphasize to issue the problems through looking into realities and functional roles of small and medium cities in the urban system for the past 10 years in Korea, to find out alternative method in order to activate the strengthening of foundation and functional activity of local small and medium cities by analyzing the relevancy between functional character and growth potentiality of individual cities.
오재화,김우혁,최웅 朝鮮大學校 建設技術硏究所 2004 建設技術硏究 Vol.24 No.2
Recently, cities are to be a new limelight in developing countries. Because, They have performed important roles in promoting and spreading economic and social development of the country. This study is concerned with all cities in Korea, and has three main purposes. First one is to select the general analysis variables affecting urban growth from existing theoretical literatures. Second one is to identify the dominant factors and their changes for the growth of cities in Korea through the analysis of correlation with growth rate. It could be done by case study of growth trends of all existing cities for analysis period. The last one is to find out a formula to estimate the future growth of cities in Korea. The results of this study could offer much suggestions to establish the development strategies of cities in Korea.
오재화,김우혁,김현웅 朝鮮大學校 建設技術硏究所 2002 建設技術硏究 Vol.22 No.1
The purpose of this thesis is to inspect the step of spatial structure varied with the urban growth in place of Kwang-ju, to analyze the developing step of urban growth on the basis of the variety of shape-index and function-index on urban from 1930 to 1992 each year, to predict the variety direction of urban spatial structure for the concentrating and efficient urban function and to grope for the prospects of urban : what is the municipal concept in the land use, the variety of population, the change of traffic system, the change of urban planning zone, the change of executive zone, the transition of spatial structure on the basis of urban growth in Kwangiu. Considering the advent of subway in 1990, Pyoung-Dong industrial block, to work out these factors, the urban pattern in Kwangiu would be developed and established in aspect of long-range planning. The size of population, the changing pattern of land use planning and zonning are compared and analyzed to justify the relation with the urban comprehensive planning circulation planning.
오재화,김우혁,김종완 朝鮮大學校 建設技術硏究所 2001 建設技術硏究 Vol.21 No.1
The problems of over population in large cities and over outflow population in small and medium sized cities, and the difference of growth and unbalanced development between them occurred as a big social issue. And since defined as urban plan, urban facilities are being placed on the status of non-execution caused by a number of factor. Accordingly, the purpose of this study is to find out appropriate solutions to various problems created by wrong applied assumption of population. And these solutions are to be applied to establishment of urban planning. Besides assuming the population of urban planning is the most important yardstick of deciding the size of future urban and physical environment. Therefore to development the plan more efficiently, the mathematical methods which is proper to the characteristics of urban must be implied and produced through the outlook based on multi-variate statistical analysis.
곽형석, 사재원, 오종우 忠北大學校 農業科學硏究所 2017 農業科學硏究 Vol.33 No.1
The image with non-contact and non-destructive measurement methods, might provide advantage to analyze and evaluate the condition of crops. It is necessary to develop a device for monitoring crops under the vinyl mulch which was protected from wild bird and weed control. Using digital image processing, the monitoring device for crops under the vinyl was developed. The monitoring system measured temperature distribution between soil and crops using an infrared temperature sensor. Based on the measured data analysis, the location of the crop under the vinyl mulch were estimated.
정영동,오재화,김우혁,송승헌 朝鮮大學校 建設技術硏究所 2000 建設技術硏究 Vol.20 No.1
The study is concerned with all small and medium size cities. Study on the major purpose is to identify the domanial factors and their change for the growth of small and medium size cities through the analysis of correlation with growth rate. It could be done by case study of growth trends of all existing small and medium size cities for analysis period. The analysis results are summarized as follow : 1. Inevitably, the classification standards of the small and medium sized level in an urban hierarchy may vary among countries, depending on their pattern of urban settlement, level of development, and economic structure, population density, etc. But, the most convenient and frequently used criterion for identifying small and medium sized cities is relative population size because the city is proportional to the functional complexity. 2. The major factors affecting growth of small and medium size cities are POP, FIN, HIS, i.e., in 1986's. and the most dominant factor among them is POP, and The major factors affecting growth of small and medium sized cities are HIS, SAC, ASS, i.e., in 1996's, and the most dominant factor is HIS. 4. As the result, in small and medium size cities three variables, i.e., POP, HIS, SAC-are selected as the general factors concerned with urban population growth.
Realization of Solar Sensing Device
Hyeok Jae Woo,Sung Ho Kim,Kyoo Jae Shin 보안공학연구지원센터 2016 International Journal of Smart Home Vol.10 No.9
In this paper, the solar sensing device used to measure the solar radiation whether it is same in all directions or maximum in the particular direction to convert it into the more electricity. The solar servo control tracking device using a pyranometer is disclosed. The device includes: a solar panel; a tracker having a solar panel driving motor driving the solar panel; a tracker controller controlling the tracker; first pyranometers measuring a solar azimuth in EW and detecting solar radiation of 380 nm to 840 nm wavelengths; second pyranometers measuring a solar azimuth in NS and detecting solar radiation; and a third pyranometer measuring a solar azimuth in the CE and detecting solar radiation. The tracker controller includes: signal amplifiers amplifying detection signals in three azimuths by the pyranometers; signal processors filtering the amplified detection signals by limiting a voltage; and a main control microcomputer outputting a control signal to the solar panel driving motor to stop the solar panel when the solar radiations are same and the solar radiations in one direction are maximum.
광도 왜곡에 따른 K-POP 무대 직캠의 인물 탐지 학습 성능 연구
김재혁(Jae-hyeok Kim),김준성(Jun-sung Kim),송우빈(U-bin Song),임재현(Jae-hyeon Im),이윤재(Yoon-jae Lee),최성우(Seong-woo Choi) 한국방송·미디어공학회 2024 한국방송미디어공학회 학술발표대회 논문집 Vol.2024 No.6
K-POP 그룹의 무대 직캠은 일반적으로 멤버 한 명당 카메라 한 대를 배치하여 멤버 별로 직접 촬영하는 방식으로 제작된다. 그러나 인물 인식 인공지능 모델이 발달하면서, 하나의 고해상도 영상에서 각 인물의 궤적을 탐지해 자동으로 멤버 별 직캠을 만드는 방식이 주목받고 있다. 본 논문에서는 조명 변화가 빈번한 K-POP 무대에서, 광도 왜곡을 통한 데이터 증강이 인물 탐지 성능에 기여하는 바를 분석한다. 현재 객체 탐지 분야의 SOTA 모델인 Co-DETR 을 이용하여 학습을 진행하며, KBS 에서 제작한 인물 궤적 탐지 프로그램 버티고(VVERTIGO)를 사용해 성능을 검증한다.