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도심 수목원에서의 경관감상과 산책이 인체의 생리적 안정에 미치는 영향
박범진 ( Bum Jin Park ),가재남 ( Jae Nam Ka ),이민선 ( Min Sun Lee ),김선아 ( Seon A Kim ),박민우 ( Min Woo Park ),최윤호 ( Yoon Ho Choi ),정다워 ( Da Wou Joung ),권치원 ( Chi Weon Kwon ),염동걸 ( Dong Geol Yeom ),박순주 ( Soon Jo 한국산림과학회 2014 한국산림과학회지 Vol.103 No.4
This research was conducted to investigate the impact of viewing scenery and walking in the urban forest onphysiological relaxation of humans. The experiment was conducted in Hanbat Arboretum located in Daejeon, and thecontrol experiment was conducted in front of Daejeon City Hall. The subjects that participated in the experimentcomprised 24 Korean male university students in their 20s (average age, 21.1±2.5 years), participated in the experimentas the subject, and these subjects were classified into three groups divided into three locations such as the pine forest inArboretum, the pond in Arboretum, and the city. The subjects sat down and viewed scenery for 10 min, and they thenwalked for 15 min. Further, physiological changes were measured using indicators such as heart rate variability (HRV),blood pressure, and pulse rate. As a result, when subjects viewed scenery and walked in the urban forest, a statisticallysignificant increase in the high frequency (HF) power of HRV and decrease in systolic pressure was observed comparedwith when subjects viewed scenery and walked in the city. Through this research, it was found that activities like viewingscenery or walking in Arboretum of the city are effective in increasing the physiological relaxation of the city residents.
민병형,김가현,이승휘,이정환,유상호 동아대학교 건설기술연구소 2001 硏究報告 Vol.25 No.1
The concern for a cleaner environment together with the need to conserve and reuse our resources has created a challenge for which sanitary engineers, working with environmentalist, will be called upon to find new solutions over the next few years. The result of the study of development of the River's waterfront run as follows. 1. The introduction of the water facilities (which is) utilized in the neighborhood by adjacent citizens and the development of the water site (which is) equipped with facilities for environment must be actually progressed. 2. The concerned authority's favorable complation of the budget must be made up to construct the facilities as the district. 3. Close investigation on the coast and arbores and so on, must be progressed to develop the river in a manner (which is) close to nature.
김가현,이승휘,서진호,민일규,이영재 동아대학교 건설기술연구소 2000 硏究報告 Vol.24 No.1
Where no records are available at a site, a preliminary estimate may be made from relations between floods and catchment characteristics. Anumber of these characteristics were chosen for testing and were measured for those catchments where mean annual flood estimates were available. Although the improvement using extended data in regression of flood estimates on catchment characteristics was small, this may be due to the limitations of the regression model. When an individual short term record is to be extended, more detailed attention can be given; an example is presented of the technique which should be adopted in practice, particularly when a short term record covers a period which is known to be biassed. A method of extending the peaks over a threshold series is presented with a numerical example. The extension of records directly from rainfall by means of a conceptual model is discussed, although the application of such methods is likely to be limited by lack of recording raingauge information. Methods of combining information from various sources are discussed in terms of information from catchment characteristics supplemented by records, but are generally applicable to different sources of information. The application of this technique to estimating the probable maximum flood requires more conservative assumptions about the antecedent condition, storm profile and unit hydrograph. It is suggested that the profile and catchment wetness index at the start of the design duration should be based on the assumption that the estimated maximum rainfall occurs in all durations centered on the storm peak.
이상배,박민용,가민호,김현덕,이창훈 연세대학교 산업기술연구소 1991 논문집 Vol.23 No.1
Autonomous action, which corresponds actively to the change of conditions in complicated circumstances, is a fundamental function equired to an intelligent mobile robot. To develop a control system for a mobile robot having such ability adaptable to the circumstances, it is necessary to establish the self-tracing technology which enabies the mobile robot to locate itself in its surrounding circumstances and manipulate its driving part with fiexibility. In this paper, to enable the mobile robot to find its location, the method of representing the route, necessary to make the route map which is used to move from the current position to the destination, is suggested. But the flexible navigation control is required for the mobile robot to navigate along the route map. So fuzzy control algorithm is suggested as navigation control algorithm. Such basic operations in navigation of the mobile robot as going straight, turning, avoiding obstacles are tested.
Ka, Min-Ho,Baskakov, Alexandr I. IEEE 2019 IEEE geoscience and remote sensing letters Vol.16 No.3
<P>The required accuracy performance of a high-precision oceanographic radar altimeter can be achieved by designing a height-tracking system. The optimal discriminator of the tracking system is synthesized in this letter, and the calculation methods for its discriminating characteristics and measurement error performance are investigated. The structure of the optimized tracking system is outlined. Using the obtained results, the dependence of the limiting accuracy of a single delay-time measurement on the signal-to-noise ratio is determined. The limiting accuracy obtained by the discriminator can be specified as the measurement performance of the altimeter system.</P>