• IEIE Transactions on Smart Processing and Computing
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• v.6 no.2
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• pp.76-84
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• 2017

This paper presents an efficient method for generating spatiotemporal images in order to detect leukocyte motion in microvessels. Leveraging the constraint that leukocytes move along the contour line of the blood vessel wall, our proposed method efficiently generates spatiotemporal images for leukocyte motion detection. To that end, translational motion caused by in vivo movement is first removed by a template matching method. Second, the blood vessel region is detected by an automatic threshold selection method in order to binarize temporal variance images. Then, the contour of the blood vessel wall is expressed via B-spline function. Finally, using the detected blood vessel wall's contour as an initial curve, the plasma layer for the most accurate position is determined in order to find the spatial axis via snake, and the spatiotemporal images are generated. Experimental results show that the spatiotemporal images are generated effectively through comparison of each step with three images.

• Journal of the Optical Society of Korea
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• v.19 no.4
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• pp.351-356
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• 2015

Visible light communication (VLC) is considered to be an attractive scheme to realize the broadband wireless communication for an indoor environment. We present a room division multiplexing (RDM) mechanism for an indoor multi-room VLC network, which utilizes the spatial position of the LED lamp in different rooms as a novel dimension of network resource for multiplexing, and thus the network capacity is increased. In such a network, the service interruption caused by user cross-room movement is an important problem, and we propose a double-area-positioning based cross-room switch solution. An experimental platform demonstrates the RDM-deployed VLC network, and validates the performance of the presented switch mechanism.

• Transactions of the Korean Society of Automotive Engineers
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• v.11 no.6
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• pp.80-85
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• 2003

In the present paper, dynamics analyses of pressure control characteristics have been performed in a variable pressure solenoid valve. A number of solenoid valves have been used in the electronic control system, especially automatic transmission of an automobile. Variable pressure solenoid valve is intended to produce spatial movement by the electrical signal. Dynamics analyses of pressure control characteristics have been practiced by the Finite Difference Method, which show the pressure distribution in the solenoid valve. The results of numerical analyses show the dependence of pressure distribution on the displacement of the spool in the solenoid valve, and then, are compared with the experimental results.

• Korean Journal of Veterinary Research
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• v.58 no.3
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• pp.147-151
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• 2018

We assessed the seroprevalence of Coxiella burnetii (C. burnetii) in cattle on Ulleung Island, Korea in a population-based follow up study for 4 years and determined the spatial distribution and risk factors associated with C. burnetii. The seroprevalence of C. burnetii was determined to be 1.4-2.0% during 2011-2014. Overall, nine cattle from three farms that tested seropositive showed C. burnetii antibody seroconversions between 2011 and 2014. The number of seropositive cattle was low, suggesting that movement of and contact between animals was possible risk factors for the transmission of C. burnetii.

• Journal of the Korean Institute of Rural Architecture
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• v.4 no.1
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• pp.87-97
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• 2002

This study is aimed at grasping how the farmhouses in Yongdong area continues to be transfigured according to the modernization and urbanization since 8.15 Liberation through the analysis of natural environment and sociocultural environment elements. The farmhouses in Yongdong area before 1960's have had a different spatial structure from those of the other areas because of the characteristics of the climatic, regional, geographic and sociocultural environment elements. The roof improvement promoting law after 1967, the Saemaul Movement since 1971 and the standard drawing of farmhouse after 1972 are transfigured the rural villages, but they were turned up the limitations of their exploits because of the lack of cognition about environment elements. Recently there were appeared the farmhouses which were reflected farmer's decisions in construction after 1980's because former farmhouses were not give consideration to environment elements.

• Journal of The Korea Institute of Healthcare Architecture
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• v.9 no.1
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• pp.35-41
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• 2003

The evaluation of economy of wards is based on the building area. The parameters are nursing area per bed, occupied area per patient, and the portion of movement area. Three areas such as patient area, nurse area, and corridor area are devided. The results of analysis are as follows. At first, allocation of patient area has the highest priority. Even though nurse area is small, the patient area is relatively large. Secondly, the patient area is mostly determined by the type of rooms, such as single, double, etc.. Finally, the type of alley on the floor is important to economy. The single corridor type is the most economical followed by the double corridor type. the single loaded type shows the worst economy.

• Proceedings of the KIEE Conference
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• 2005.05a
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• pp.33-35
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• 2005

We propose an eye gaze tracking system under natural head movements. The system consists of one CCD camera and two front-surface mirrors. The mirrors rotate to follow head movements in order to keep the eye within the view of the camera. However, the mirror controller cannot guarantee the fast head movements, because the frame rate is generally 30Hz. To overcome this problem, we applied Kalman predictor to estimate next eye position from the current eye image. In the results, our system allows the subjects head to move 50cm horizontally and 40cm vertically, with the speed about 10cm/sec and 6cm/sec, respectively. And spatial gaze resolutions are about 4.5 degree and 4.5 degree, respectively, and the gaze estimation accuracy is 92% under natural head movements.

• The Journal of Korean Association of Computer Education
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• v.14 no.2
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• pp.95-102
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• 2011

In this paper, we propose measurement-devices for the assessment of input vector consisted of face's movement as feature points through image processing based on AAM technique. The proposed method has been applied to classify students by 2-class(ADHD positive, ADHD negative). Experimental results show that the proposed method was successful in acquiring more objective and quantitative data than conventional methods, it takes advantage of examining without temporal and spatial constraints.

• Korean Institute of Interior Design Journal
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• no.33
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• pp.62-67
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• 2002

Architecture and Film have been interested in each other since 1895. This concern manifests various aspects and is continued up to now. If we examine into detail of relationship between film and architecture, those share the integration of time and space as the art of time and space. Film makes inexpressible time into space by showing the change of space in the issue that is the merger of time and space. Then, this is the issue of movement that compiling element was intervened. And the creative space of film which is the timely expression stimulates the person to experience whole form through spatial experience. Consequently, the architecture as an image maker must be developed through a research about film as an image creator. Also a discussion about film and architecture do not apply one to the other but must be focused on the mutual relationship.

• Korean Institute of Interior Design Journal
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• no.4
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• pp.53-60
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• 1995

Recently, much attention is paid on the office design be-cause the real world of work has undergone substantial changes, in both spatial and temporal aspects, due to the in-troduction of data processing technologies and new types of production. Today's renewed objectives of office are to define new physical space for work, to deal with economic and organizational changes. In the period of information, the purpose of an office is to improve the productivity for employers employees the comfort and vitality. Today's intellecture resources are necessary for the development in the modern business. The Hypid office, as an alternative in order to correspond the rapid changes, is proposed to give the space for satisfy-ing the basic desires of a human being-eating, resting and working. Accompanying with flexibility and comfortability, this office should include the space for personal purpose and the space for social purpose. Applying the concept of comfort like at home leads to re-lease a worker's stress from the society of information. The future office which is to enhance the quality of culture by in-tegrating indivisual, domestic and social life should commu-nicate efficiency, movement, energy, transformation.