• 대한한의학원전학회지
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• 제30권4호
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• pp.19-34
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• 2017

Objective : The explanations regarding the function, region, and related internal organ and meridian of Jonggeun as discovered in historical texts were studied in an attempt to understand the true concept of Jonggeun. Method : Texts were searched to extract sentences that are relasted to Jonggeun, and these were used to categorize and analyze the area, related meridian and organ, function, and disease symptom. Thereafter, how Jonggeun affects the whole body and the regions of Jonggeun were contemplated. Result & Conclusion : Jonggeun can be divided into what is related to sexual intercourse, and into sokgol and Ligigwan. Here, things related to sexual intercourse explains the function of penis arousal. The functions of Sokgol and Ligigwan signifies that they serve as the base points for the body when it exercises, and they cooperate with Chungmaek to provide blodo and vitaility to body joints. There are two major differing opinions regarding the region of Jeonggeun. One explains that it exists within the genitalia, and the other sees fit to believe that it exists within small abdomen. Considering the functions of Sokgol and Ligigwan, it is right to view that Jonggeun exists around Gigahyeol, and the view limited to genitalia only considers Jonggeun around sexual intercourse.

• 제어로봇시스템학회논문지
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• 제16권11호
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• pp.1029-1037
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• 2010

If an internal combustion engine is operated by consolidated control, the minimum fuel consumption is achieved and the demanded objectives are satisfied. For this, it is necessary that the engine is operated on the ideal operating line which satisfies minimum fuel consumption. In this context of view, there are many tries to achieve given object. However, the parameters in the internal combustion engines are variable and depend on the operating points. Therefore, it is necessary to cope with the uncertainties such that the optimal operating may be possible. From this point of view, this paper gives a controller design method and a robust stability condition for engine torque control which satisfies the given control performance and robust stability in the presence of physical parameter perturbation. Exactly, in this paper, we consider the robust stability problem of this 2DOF servosystem with nonlinear type uncertainty in the engine system, and a robust stability condition for the servosystem is shown. This result guarantees that if the plant uncertainty is in the permissible set defined by the given condition, then a gain tuning can be carried out to suppress the influence of the plant uncertainties.

• 건축역사연구
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• 제19권5호
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• pp.49-63
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• 2010

With the effect that the Yipsu-ryong(入首龍) of Ju-san(主山) influenced on the layout in the view of geomantic topography(形勢), how Ahn-san(案山) affected the layout plan of the Korean academics of classical learning(書院) is researched. And how the "Jirisinbeob(地理新法)" which had been written by Ho-sun-sin(胡舜申) was applied to the Korean academics of classical learning in the view of Li and Ch'i(理氣) is studied. In Fengshui, the method to pick out a site and to confirm the direction for building construction was divided into two, one of them was 'the geomantic topography', which included 'Ju-san following type(主山順應形)', 'Ahn-san stressing type(案山重視形)' and 'Ju-san & Ahn-san complex type(主 案山混合形)'. And the other is the 'Rule of direction(向法)'. The Korean academics of classical learning was applied by the geomantic topography of Fengshui for its layout and direction, regardless of political, regional and period factors. So when the Sa-rim(士林) needed to set direction for the Korean academics of classical learning, the ground that was appropriate to the geomantic topography of Fengshui was selected. Therefore, the Sa-rim who was abused in Neo-Confucianism had a mind of stressing geomantic topography of Fengshui and they applied it positively for building construction.

• 한국조경학회지
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• 제25권4호
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• pp.141-157
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• 1998

It has been general view to Josun palace space that the Kyongbok palace, a main palace, is arranged with symmetric geometrical composition principles and, unlikely main palace, sub-palaces such as Changduk, Changkyong and Kyonghee palace are placed in organic structure adapted to natural land form. With that view, there are no common factors to be considered between these palace, main and sub palace, in composting principles of the space. In this study, because of same ideological period, although there is external difference of that palaces, that common ideological principles are projected to these two palaces types through compositing space is assumed. On this hypostasis, this study has been focused on finding the ideological principles projected to these palace space commonly. As result of study, some of them are considered as common principles; Firstly, they are arranged in the text of contents through the way of naming to building, enterence and so on. The second point is ; it is viewed that the Oheung and symmetric arrangement method based on Oheung are used in compositing of palace space. The third is ; through analizing central space of Kyongbok palace, it is analized that oneness composition principles, which are based on the theory of Umyangheong, are projected to different palace space commonly.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2007년도 Proceedings of ISRS 2007
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• pp.195-198
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• 2007

GOCI(Geostationary Ocean Color Imager) is the core paryload of the geostationary satellite COMS(Communication, Ocean and Meteological Satellite) for ocean monitoring. It is scheduled to be launched at the end of 2008. GOCI observes ocean color around the Korean Peninsula over $2500km{\times}2500km$ area. Whole field of view is divided into 16 solts and scan mechanism enables to point each slot position. Tilted two-axis scan method is used to observe entire field of view with great pointing stability. Vignetting of the optical system appears when the partial obscuration by intermediate optical components occurs. It leads to the variation of the illumination in the image and gradual fading near the edge of the field. It should be prohibited for the stable radiometric performances. In this work, vignetting analysis of GOCI optical system is performed. For the systematic approach, GOCI optical system is divided into scan mechanism part and telescope part. Vignetting analysis of each part is performed and each result is combined for the overall vignetting performances. The analyzed results can be applied to the selection of slot acquisition angle of scan mechanism to minimize vignetting effects.

• 천문학회보
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• 제38권1호
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• pp.64.1-64.1
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• 2013

The point spread function (PSF) of an optical system is in general defined as a two-dimensional intensity distribution which results from a single point source at infinity. It is an important key for the evaluation of the optical performance of an astronomical telescope. The PSFs of the soft X-ray telescope (SXT) aboard Yohkoh were measured in a wide range of the field-of-view under the in-flight configuration at White Sands Missile Range prior to launching the satellite. It has been known that the SXT PSF has a sharp peak at the core and the intensity drops very fast as it goes distant from the center. Due to the combination of this sharp peak at the PSF core and the effect of undersampling by a large pixel size, a carefully designed method is requested in the examination of the PSF data. The pattern of the SXT PSF is determined by the fitting of a mathematical functional form to the pre-launch experimental data. The elliptical Moffat function has been adopted for the evaluation of the SXT PSF. It is revealed from our study that the SXT PSF shows a peculiar characteristics, and thus a careful consideration on the undersampling effect and also a proper choice of statistics are necessary for the determination of the best fit function of the PSF. Details on the on- and off-axis SXT PSF in the field-of-view will be introduced and discussed in our presentation.

• 한국농촌건축학회논문집
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• 제10권2호
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• pp.37-44
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• 2008

Both environments and landscape can be checked in development of waterfront, Nevertheless this conditions does not control at the programming phase as much as necessary in absorption speed of development. Therefore this paper aims to analyze for the environmental space and sustainable landscape. In case of Anmock Harvor, our team carried out interview method by satisfaction level and attractiveness to take requirements of users. This research is to provide that fishing village-national harbor and swimming beach based on the waterfront scale, consists of pedestrian mall, promenade circulation, various water friendly park and beautiful pier. This study proposes two strategies for better life by waterfront space: first, renewal guideline is necessary to masterplan: second, systematic comprehensive plan can be established regal procedures(District Unit Plan & Agreement of Landscape) by participation of regional resident. This survey of waterfront spatial data is expected to use for environmental improvement of fishing village, harbor and swimming beach.

• 대한임베디드공학회논문지
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• 제18권1호
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• pp.19-24
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• 2023

In traditional fish farming way, the workers have to observe all of the pools every time and every day to feed at the right timing. This method causes tremendous stress on workers and wastes time. To solve this problem, we implemented an automatic detection system for feeding time using deep neural network. The detection system consists of two steps: classification of the presence or absence of feed and checking DO (Dissolved Oxygen) of the pool. For the classification, the pretrained ResNet18 model and transfer learning with custom dataset are used. DO is obtained from the DO sensor in the pool through HTTP in real time. For better accuracy, the next step, checking DO proceeds when the result of the classification is absence of feed several times in a row. DO is checked if it is higher than a DO reference value that is set by the workers. These actions are performed automatically in the UI programs developed with LabVIEW.

• 제어로봇시스템학회논문지
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• 제18권7호
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• pp.650-657
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• 2012

An effective dual-mode camera system(a passive wide-angle camera and a pan-tilt-zoom camera) is proposed in order to improve the performance of visual surveillance. The fixed wide-angle camera is used to monitor large open areas, but the moving objects on the images are too small to view in detail. And, the PTZ camera is capable of increasing the monitoring area and enhancing the image quality by tracking and zooming in on a specific moving target. However, its FOV (Field of View) is limited when zooming in on a specific target. Therefore, the cooperation of wide-angle and PTZ cameras is complementary. In this paper, we propose an automatic initial set-up algorithm and coordinate transform method from the wide-angle camera coordinate to the PTZ one, which are necessary to achieve the cooperation. The automatic initial set-up algorithm is able to synchronize the views of two cameras. When a moving object appears on the image plane of a wide-angle camera after the initial set-up positioning, the obtained values of the wide-angle camera should be transformed to the PTZ values based on the coordinate transform method. We also develope the PTZ control method. Various in-door and out-door experiments show that the proposed dual-camera system is feasible for the effective visual surveillance.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2007년도 춘계학술대회 논문집
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• pp.268-271
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• 2007

A sandwich tube is a structured material that has two inner and outer circular tubes and light material between them. In this paper, a sandwich tube with a pyramidal truss core is introduced. Fabrication method and example made by brazing are shown. The behavior of the sandwich tube under lateral loading is predicted by analytical and numerical method. Comparative study between the sandwich and the monocoque tube is performed at a point of view such as strength and weight saving. As a result, proposed tube is appropriate for application to lightweight structural material