• Journal of the Korean Institute of Intelligent Systems
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• v.22 no.1
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• pp.62-68
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• 2012

Steady-State Visually Evoked Potentials (SSVEP) are natural response signal associated with the visual stimuli with specific frequency. By using SSVEP, occipital lobe region is electrically activated as frequency form equivalent to stimuli frequency with bandwidth from 3.5Hz to 75Hz. In this paper, we propose an experimental paradigm for analyzing EEGs based on the properties of SSVEP. At first, an experiment is performed to extract frequency feature of EEGs that is measured from the image-based visual stimuli associated with specific objective with affordance and object-related affordance is measured by using mirror neuron system based on the frequency feature. And then, linear discriminant analysis (LDA) method is applied to perform the online classification of the objective pattern associated with the EEG-based affordance data. By using the SSVEP measurement experiment, we propose a Brain-Computer Interface (BCI) system for recognizing user's inherent intentions. The existing SSVEP application system, such as speller, is able to classify the EEG pattern based on grid image patterns and their variations. However, our proposed SSVEP-based BCI system performs object pattern classification based on the matters with a variety of shapes in input images and has higher generality than existing system.

• Korean Journal of Optics and Photonics
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• v.9 no.6
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• pp.368-372
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• 1998

A 16-views 3 dimensional imaging system is designed by spatially combinding two 8-views time multiplexed image channels. Each 8-views channel composed of 3 primary color CRTs and a dichroic beam splitter which combining the three CRTs as one channel. Each CRT displays 8-view images time sequentially. These images are projected to a holographic screen of a size 1$\times$0.8 $m^2$ through a projection optics. Characteristics of the three different configurations of projection optics are examined with the optics designing program "DEMOS" to select an optimized projection optics for the system. The configulation of the optimized projection optics is found like following; images from each channel combined by two-fold mirror are projected by a projection objective through a 16-strips LCD shutter. In this configuration, the shutter should be located at the entrance pupil of the objective, and the folded edge of the two-fold mirror should contact symmetrically to the center line of the shutter.e shutter.

• Journal of the Optical Society of Korea
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• v.7 no.4
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• pp.230-233
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• 2003

This study describes the conceptual design of a soft x-ray microscope system based on a laserbased source for biomedical application with high resolution (${\leq}$50nm). The laboratory scale soft x-ray microscope consists of high power laser plasma x-ray source and grazing incidence mirrors with high reflectivity. The laser plasma source used for developing this system employs Q-switched Nd-YAG pulsed laser. The laser beam is focused on a tantalum (Ta) target. The Wolter type I mirror was used as condenser optics for sample illumination and as objective mirror for focusing on a detector. The fabrication of the Wolter type I mirror was direct internal cutting using ultraprecision DTM. A hydrated biological specimen was put between the two silicon wafers, the center of which was $Si_3N_4$ windows of 100㎚ thickness. The main issues in the future development work are to make a stable, reliable and reproducible x-ray microscope system.

• The Research Journal of the Costume Culture
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• v.18 no.5
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• pp.942-959
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• 2010

The Realization of Ubiquitous is achieved by magic mirror and it is required more concrete study to realize it's functionality. Especially its function of professional fashion co-ordinator for managing the appearance could be of further use. The Objective of this Study is to establish RFID chip data base to put into a computer for making use of the functionality of the magic mirror aiming at suggesting the available information on the total fashion co-ordination. I sought firstly the code with binary system determining the criteria of accessories to be input in a RFID chip. Secondly, as the image with cloth is an important element for the total fashion co-ordination, desired co-ordination among the emphasis, harmony, character, season and accent can be made selectable classifying into a limit element and a common element to extract the codes. Thirdly, necessary conditions were given to the generated codes using Visual C++ program of Microsoft and the extracted codes as per groups were compared and analyzed.

• The Journal of Korean society of community based occupational therapy
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• v.3 no.2
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• pp.13-23
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• 2013

Objective : The purpose of this study is to evaluate the effect of task-oriented mirror therapy involve visual illusion on upper extremity functions in stroke patients. Method : We divided into two groups that task-oriented mirror therapeutic exercise program include visual illusion and not include. In order to determine the change in upper extremity function, Box & Block Test and Line-bisection Test was evaluated each time period. Result : The result of this study that we found out that all participation's upper extremity function had been improved during the intervention and sustained during baseline regression. Applying mirror therapy program include visual illusion group more improved trend line during the intervention, visual illusion group, it had been shown there are higher difference between visual illusion group and non-visual illusion group in upper extremity functions. Conclusion : It is thoughtful that task-oriented mirror therapy could help for stroke. It might be more effectiveness to apply who have exercise program include visual illusion.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.99.3-99
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• 2001

In fluorescence mode confocal scanning microscope, level of detected signal is very low. In object scanning type confocal scanning microscope, the additional optical system with objective lens and plane mirror was proposed to increase signal intensity, but there was none for beam scanning type confocal scanning microscope. We propose reflecting optical systems which improve signal intensity in beam scanning type confocal scanning microscope. We choose one of the proposed optical systems and design the optical system, i.e., select optical components and assign distances between the selected components. To design the optical system, we use finite ray tracing method and make cost function to be minimized.

• Proceedings of the KIEE Conference
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• 1996.07c
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• pp.1954-1956
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• 1996

In this paper, we measured the reflectance of the $100{\mu}m{\times}100{\mu}m$ micromirror. In order to reduce the size of the HeNe laser beam, an eyepiece and an objective lens were used. CCD camera was used to the monitor the position and focusing. It was found that the diameter of the focused laser beam was about $3{\mu}m$. The reflectance of the reflectance of the micromirror was over the surface and 87% of the commercial mirror.

• Therapeutic Science for Rehabilitation
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• v.5 no.2
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• pp.71-80
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• 2016

Objective: To illustrate effects and application potential of Mirror Therapy (MT) for patients with post-stroke hemiplegia. Method: With reference to 9 journals (published Jan.2005-Jan.2016) on Pubmed, selected based on in/exclusion standards. Result: Simple wrist/hand movements and task-based MT were used as intervention methods to examine the effects. Tools used to assess intervention effects included upper limb functioning, Activities of Daily Living (ADL), physical condition and quality of life. Upper limb functioning turned out to have significance for ADL with higher effectiveness at the distal than the proximal region. Yet the quality of life disparity between the experiment group and the control was not found to be significant. Conclusion: We believe that research can aid clinical therapists in applying MT accordingly to individual patient characteristics. Despite prolonged difficulty in confirming efficient application due to varied protocols, development of systemized treatment protocols for maximization of MT's effectiveness remains necessary.

• Journal of Sasang Constitutional Medicine
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• v.33 no.1
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• pp.1-21
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• 2021

Objective The purpose of this study was to examine the correlation between the Cold-damage Six-meridian disease of Qibo (岐伯六經病證) and Sasang Constitutional Symptomatology (四象體質病證), presented in Discourse on the Origin of Eastern Medicine (醫源論) of Longevity and Life Preservation in Eastern Medicine (Donguisusebowon, 東醫壽世保元). Method The process of development from Cold-damage Six-meridian disease of Qibo (岐伯六經病證) to Six Meridians Physical Symptoms and Medicines (六經形證用藥) in the chapter Cold(寒門) of the Treasure Mirror of Eastern Medicine (Donguibogam, 東醫寶鑑) was investigated. And the correlation between Six Meridians Physical Symptoms and Medicines (六經形證用藥) and Sasang Constitutional Symptomatology (四象體質病證) was considered. Results and Conclusions 1. The Cold-damage Six-meridian disease of Qibo (岐伯六經病證) in the chapter Heat Treatise (熱論篇) of Basic Questions (素問) had evolved into Six Meridians Physical Symptoms and Medicines (六經形證用藥) in the chapter Cold(寒門) of the Treasure Mirror of Eastern Medicine (Donguibogam, 東醫寶鑑) through Book for Life Saving (Huorenshu, 活人書), a work of Zhu Gong (朱肱), Six Books on Cold Damage disease (Shanghanliushu, 傷寒六書), a work of Tao Hua (陶華) and Introduction to Medicine (YixueRumen, 醫學入門), a work of Li Chan (李梴). 2. The correlation between the Cold-damage Six-meridian disease of Qibo (岐伯六經病證) and Sasang Constitutional Symptomatology (四象體質病證) can be analyzed and understood through Six Meridians Physical Symptoms and Medicines (六經形證用藥) in the chapter Cold(寒門) of the Treasure Mirror of Eastern Medicine (Donguibogam, 東醫寶鑑). 3. Greater Yang meridian disease of Qibo (岐伯) is related to Soyangin early stage of Lesser-Yang Wind-Injury symptomatology and Soyangin early stage of Chest-Heat symptomatology, Yang Brightness meridian disease and Greater Yin meridian disease to Taeeumin Liver-Heat symptomatology, Lesser Yin meridian disease to Soyangin Chest-Heat symptomatology, Lesser Yang meridian disease to Soyangin early stage of Lesser-Yang Wind-Injury symptomatology and Reverting Yin meridian disease to Soeumin Reverting Yin symptomatology of Greater Yang disease.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2014.10a
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• pp.562-562
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• 2014

Assessment of aerodynamic noise is becoming increasingly important for automotive manufacturers. Flow passing a vehicle may indeed lead to high interior noise level and affect cabin comfort. Interior noise results from various mechanisms including aerodynamic fluctuations of the disturbed flow around the side mirror or pillar, hydrodynamic and acoustic loading of the car panels and windows, vibration of these panels and acoustic radiation inside the vehicle. Objective of the present study is to capture these important mechanisms in a simulation model and demonstrate the ability of the combined simulation tools Fluent / Virtual.Lab to provide accurate aerodynamic and interior noise prediction results. Previous study focused on the noise generated by the turbulence around the A-pillar structure of the HSM (Hyundai simplified model). The present study also includes the effect of the side-mirror and rain-gutter structures. Complete modeling process is presented including details on the unsteady CFD simulation and the vibro-acoustic model with absorption materials. Guidelines and best practices for building the simulation model are also discussed.