• Journal of Photoscience
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• v.9 no.2
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• pp.470-471
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• 2002

It has been well documented that dermal irradiation by ultraviolet A (UVA) locally decreases the number of Langerhans cells and suppresses contact hypersensitivity of the skin. We found that topical irradiation of UVA to the eye systemically decreased the number of Langerhans cells (LC) in the dorsalskin and lymph nodes and elicited lymphocyte apoptosis in the latter tissues but not in the thymus. Optic nerve resection, but not ciliary ganglionectomy, eliminated the UVA-induced decrease in dermal Langerhans cells by a mechanism that was partially inhibited by hypophysectomy. The immunosuppressive effect of UVA was not observed in knockout mice lacking inducible-type of nitric oxide synthase (iNOS). These results suggested that topical irradiation of UVA to the eye induced immunosuppression via NO-dependet neuronal pathways.

• 한국정보디스플레이학회:학술대회논문집
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• 2005.07b
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• pp.1603-1606
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• 2005

Eye Glass Display (EGD) with microdisplay to realize the virtual display can make the large screen, so virtual image has been developed by using microdisplay panel. This paper shows study of low cost lens design and simulation for microdisplay system with 0.6" Liquid Crystal on Silicon (LCoS) panel. Lens design optimized consider to spherical aberration, astigmatism, distortion, and chromatic aberration. Code V is used and it designed an aspheric lens about exit pupil 6mm, eye relief 20mm and 35 degree of field of view (FOV). With the application this aspheric lens to LCOS type's microdisplay, virtual image showed 50 inch at 2m. One side of the aspheric lens was constituted from diffractive optical element (DOE) for the improvement in a performance. It had less than ${\pm}2%$ of distortion value and modulation transfer function in axial had 20% of resolution with 30 lp/mm spatial frequency. The optical system is suitable for display of 0.6"-diagonal with SVGA.

• Journal of the Korea Society of Computer and Information
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• v.1 no.1
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• pp.171-182
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• 1996

This study is, on the design and Implementation of automatic translation (user made pictures, or drawings to 3-dimentional graphics) magic eye system by analyzing and algorithm the principle of the stereogram(so called "magic. eye" ) which Is the another type of stereo images matching method. It was written in C programming language and needs windows 3.1 or higher version of windows. It Is expected to be utilized as acknowledgment tool of 3-dimentional vision and to be use In optalmology as a tool to enhance one's visualpower by general PC user. who are interested In stereogram.tereogram.

• The Bulletin of The Korean Astronomical Society
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• v.46 no.1
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• pp.52.2-52.2
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• 2021

The Black Eye Galaxy M64 is an intriguing spiral galaxy with a Type III disk break. To trace the origin of its Type III component, we present HST/ACS F606W/F814W photometry of resolved stars in the outer disk of M64 (2.5' < R < 6.5'). First, we discover a bright extended globular cluster (GC) M64-GC1 at R ~ 5.5', and find that it is an old metal-poor halo GC ([Fe/H] = -1.5 +/- 0.2). Second, we find that there are two distinct subpopulations of red giant branch stars (RGBs). One is an old metal-rich ([Fe/H] ~ -0.4) disk population, and the other is an old metal-poor halo population similar to the resolved stars in M64-GC1. The radial number density profile of the metal-rich RGB follows an exponential disk law, while that of the metal-poor RGB follows a de Vaucouleurs's low. From these results, we conclude that the origin of the Type III component in M64 is a halo, not a disk or a bulge. We will further discuss the results in regards to the formation and evolution of M64.

• The Journal of the Korea Contents Association
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• v.10 no.10
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• pp.111-119
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• 2010

This paper deals with the experiments of optokinetic differentiation within eye tracking test through the menu direction and cognitive degree of service menu title for watching digital media service. Researcher establish a research topic which verification of differentiations of eye tracking velocity when media user perceive the service menu title within vertical structure or horizontal structure. Experimentation was designed with two types of menu structure-vertical or horizontal-and these have each 9 cases of eye tracking tasks for experimentee. Researcher arrives at a conclusion through as stated above experiment that cases of vertical menu structure is more effective method with linear channel service menu, otherwise that cases of horizontal menu structure is more effective method with non linear channel service menu, like a video on demand service. The research results will be very helpful with actual media industry players when they planning the evolutionary direction of their menu layout.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.31 no.3 s.52
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• pp.279-283
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• 2005

The content of lipid or moisture and index of erythema or melanin on each facial part of 170 urban middle-aged women without dermic disease was measured by non-invasive method. This measurement intended to understand the skin condition on each facial part of middle-aged women, and to determine the correlation between objective measured values and subjective symptom of lipid content/moisture content. The results was summarized as follows. At each facial Part, the order of moisture content was eye rims, forehead, and cheek and that of lipid content was forehead, eye rims, and cheek. The erythema index was in the order oi forehead, cheek and eye rims and melanin index, in the order of eye rims, forehead and cheek. It turned out that the middle-aged women generally lacked lipid content rather than moisture one. The objective measured values of lipid content coincided with subjective symptom of lipid type. The lipid content, erythema index and melanin index showed correlation significantly.

• International Journal of Advanced Culture Technology
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• v.6 no.3
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• pp.201-210
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• 2018

We constructed 3-D images by HMD (Head Mount Display) type and polarization technique through which a training instrument of binocular function based on clinical vision therapy was developed and investigated its demand. To design the instrument that performs Test- Diagnosis - (Prescription) - Training - Treatment we provided a customized training method for the trainers using optical IT instruments of binocular test. Through the contents and the instruments of the vision therapy technology developed in this work we can replace the current vision test instruments to those costing 60% lower price in eye clinics and eye glasses shops. By replacing the existing vision test instruments it is possible to create a new market of the vision therapy in vision training instruments.

• 정보저장시스템학회:학술대회논문집
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• 2005.10a
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• pp.145-149
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• 2005

We describe holographic ROM system to read bit-type data. It has optical system similar to general optical data storage system such as DVD. But because holographic data storage systems have to adopt imaging optical system, in our system bit-type data can be read out by different servos with DVD. We devised 3-hole method similar to 3- beam method for the tracking servo and used astigmatic optical system for the focusing servo. Also we developed the reference beam servo to measure movement of reference beam because especially holographic data storage systems need reference beam. The system was operated by these three servos and objective lens of NA 0.6. We obtained eye pattern from random data of 3T-2um track pitch. We also obtained another eye pattern from DVD disk by only using focusing servo PDIC in our system to verify the compatibility with DVD.

• Journal of The Korean Association For Science Education
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• v.32 no.9
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• pp.1443-1451
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• 2012

This study aims to investigate the gaze patterns of two expert and two novice teachers in one hour of lecture type class. Teachers recruited from the same middle school conducted the class each, wearing an eye-tracker. Gaze rate and gaze movement pattern were analyzed. The scene where teachers faced in the classroom was categorized into three zones; student zone, material zone, and non-teaching zone. Student zone was divided into nine areas of interest to see the gaze distribution within the student zone. Expert teachers showed focused gaze on student zone while novice teachers' gaze rate was significantly higher at the non-teaching zone, compared to expert teachers' one. Within student zone, expert teachers' gaze spread to the rear areas, but novice teachers' one was narrowly resided in the middle areas of the student zone. This difference in gaze caused different eye movement pattern: experts' T pattern and novices' I pattern. On the other hand, both teacher groups showed the least gaze rate onto the left and right front areas. Which change is required to teachers' gaze behavior and what must be considered in order to make effective teacher gaze in the classroom setting were discussed.

• Journal of radiological science and technology
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• v.44 no.3
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• pp.189-194
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• 2021

This study was conducted to reduce the exposure dose to the breast and adjacent organs as the number of Mammography increased. Therefore, it has been designed a shield in lead, bismuth + tungsten, and bismuth that does not require to be equipped by the patient, in which each type of shield was compared and analyzed of radiation exposure dose to breast, thyroid, and eye. Using a mammography machine, optically stimulated luminescent dosimeter(OSLD) was inserted to bilateral breast, thyroid, and eye of a dosimetry phantom to measure dose radiated onto the phantom. Shielding device was made in different thickness of 2mm, 3mm, and 5mm and dose evaluation was performed by measuring the dose while using lead, bismuth, and bismuth + tungsten prosthesis. When each shields combined with shielding device, were compared of dose, all showed similar does reduction in the dose to breast, thyroid, and eye in both cranialcaudal and mediolateraloblique view. Based on the current study, bismuth and bismuth + tungsten can replace conventional lead shield and it is anticipated to safely and conveniently reduce radiation exposure to breast, thyroid, and eye with the shield that does not require to be equipped.