• 한국인지과학회:학술대회논문집
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• 한국인지과학회 2010년도 춘계학술대회
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• pp.55-59
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• 2010

To examine iterocular interactions in normal subjects, we recorded EEG activity from channel O1 and O2 on 14 healthy subjects while checkerboard pattern reversals were presented to each eye with different interstimulus intervals (ISIs) ranging from 0 to 218 ms. When pattern reversals were presented asynchronously to each eye, P-1 activity evoked by each reversal was significantly suppressed compared to the activation evoked by synchronous reversals. Furthermore, when there was time delay between pattern reversals to each eye, theta (4-10 Hz) band power was also significantly decreased, whereas beta (10-30 Hz) band power was relatively preserved. Our results suggest that neural activity evoked by sustained but not yet reversed checkerboard from one eye might inhibit upcoming neural response evoked by reversed checkerboard from the other eye. Decreased P-1 activity might reflect such inhibitory interaction between two eyes. Also, decreased theta and preserved beta band power might reflect engagement of different neural circuit for binocular / monocular vision.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1989년도 하계종합학술대회 논문집
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• pp.153-157
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• 1989

In this paper, a new method of Eye Movement Pattern Encoding (EMPE) which is based on electrooculography(EOG) was suggested for the purpose of effective communication between man and machine, instead of Point-Of-Regard-Selection (PORS) method. Also, ocular interface is designed and the typing aid, eye-pattern writer, was constructed for the test of theoretical validity and its practical aspect. Effect of eye fatigue on the performance of ocular interface was quantified through fatigue test.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -1
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• pp.470-473
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• 2002

A communication-aid circuit to detect eye-gazed patterns is proposed in this paper. The circuit is an analog-digital mixed system. By determining the direction of eye-gazed pattern, the circuit detects an eye-gazed pattern from 2-dimensional arrayed patterns on a syllabary. Different from conventional systems, the syllabary is moved to overlap the eye-gazed pattern with the center coordinate of screen. Thus, the proposed circuit can avoid a complex calculation of the distance between the eye-gazed point and the center coordinate. Furthermore: an economical size of hardware can be provided since no full-adders are required by employing floating-gate MOSFBT's. The validity of the cricuit design is confirmed by computer simulations. Furthermore, to implement onto an IC chip, the layout design is performed by using a CAD tool, MAGIC.

• 한국게임학회 논문지
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• 제21권6호
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• pp.31-40
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• 2021

바둑은 2,500년 이상의 역사를 지녔고, 바둑에서의 사활문제는 컴퓨터 바둑을 구축 시에 반드시 해결해야 되는 기본 문제영역이 된다. 본 논문에서는 사활문제와 직결되는 3, 4, 5, 6궁에 대한 원형 안형의 개수 확인과 4-튜플 형식으로 표현된 원형 안형을 분류하고자 했다. 실험은 몬테카를로 방법과 점 패턴 매칭에 의해 수행되었다. 실험 결과에 따르면 원형 안형의 개수는 3궁 2개, 4궁 5개, 5궁 12개, 6궁 35개가 된다. 아울러 4-튜플 형식으로 된 원형 안형을 분류하면 3궁 1가지, 4궁 3가지, 5궁 4가지, 6궁 8가지로 분류된다.

• The Korean Journal of Physiology
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• 제4권1호
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• pp.59-67
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• 1970

In recent observations on vestibular eye movements in mammals, reported by several different workers, it was indicated that the pattern of reflex eye movement from semicircular canal nerve stimulation in rabbits was different from that observed in the other species such as cats and dogs. Observing the different anatomical features of the extraocular muscles of rabbits, Kim ascribed the different pattern of eye movement of rabbits to the functional difference of inferior and superior oblique muscles from those of other species. Present experiment was carried out to elucidate a physiological mechanism underlying in such particular pattern of reflex eye movement in rabbits. An individual canal nerve was selectively stimulated, under a dissecting microscope, by a fine electrode induced into an ampulla through a hole provided on the wall of corresponding osseous canal, and responses of the extraocular muscles were checked by recording the isotonic changes of muscle length. Following results were obtained. 1. Direct stimulation of the superior or inferior oblique muscles Produced upward or downward movement of the eye turning toward medial side respectively. 2. Stimulation of the unilateral canal nerve Produced a marked contraction of a main contracting ocular muscle and simultaneous relaxation of an antagonistic muscle in both eyes. Less potent contraction of an additional ocular muscle was observed and it appeared to augment the function of the main contracting muscle in the ipsilateral eye. 3. Stimulation of superior semicircular canal nerve caused a primary contraction of superior rectus, synergic contraction of superior oblique and relaxation of inferior rectus in ipsilateral eye. Contraction of inferior oblique and relaxation of superior oblique were observed in the contralateral eye. 4. Stimulation of lateral semicircular canal nerve produced a primary contraction of medial rectus, synergic contraction of superior oblique and relaxation of lateral rectus in the ipsilateral eye. Contraction of lateral rectus and relaxation of medial rectus were observed in the contralateral eye. 5. Stimulation of inferior semicircular canal nerve produced a primary contraction of superior oblique, synergic contraction of superior rectus and relaxation of inferior oblique in the ipsilateral eye. Contraction of. inferior rectus and relaxation of superior rectus were observed in the contralateral eye. 6. Upon stimulation of individual canal nerve, the pattern of eye movement in rabbits is different from those of cats, however, the responses of the extraocular muscles appear to be similar in two species. Therefore, it is concluded that the different Pattern of eye movement in both species are not due to the possible difference of vestibule-ocular reflex pathways but to the functional difference of superior and inferior oblique muslces.

• 한국자기학회:학술대회 개요집
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• 한국자기학회 1999년도 춘계연구발표회 논문개요집
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• pp.114-115
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• 1999

• 한국자기학회:학술대회 개요집
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• 한국자기학회 1998년도 추계연구발표회 논문개요집
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• pp.26-27
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• 1998

• 한국표면공학회지
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• 제42권2호
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• pp.59-62
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• 2009

Antireflection pattern, moth-eye structure, was fabricated on lens using Ultra Violet nanoimprint lithography and flexible template. Ni template with conical shaped structure was used as a master template to molding. The flexible poly vinyl alcohol template was fabricated by molding. This poly vinyl alcohol template was used as an imprint template of imprint at lens. Using Ultra Violet nanoimprint lithography and poly vinyl alcohol template, polymer based moth-eye structure was formed on lens and its transmittance was increased up to 94% from 92% at 550 nm wavelength.

• 한국콘텐츠학회논문지
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• 제14권7호
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• pp.45-57
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• 2014

본 연구는 소셜미디어 사용자들의 시선경로의 흐름을 통하여 SNS 사용자들의 감성적 경험을 이해하고 사용자 중심의 사용자 환경(UI)에 암시점을 주는데 그 목적이 있다. 또한 페이스북에 노출된 광고에 대한 사용자들의 응시시간 및 태도 분석을 통하여 소셜미디어 마케팅영역에 사용자경험(UX) 중심의 이론적, 실무적 공헌점을 제시하고자 한다. 시선추적 장치인 아이트래커(eye-tracker)를 활용하여 페이스북 사용자들의 UX를 추적한 결과 사용자들의 시선경로는 기존 웹에서의 사용자들이 가지고 있던 시선경로인 F-shape pattern과는 다른 H-shape pattern을 확인하였다. 또한 페이스북에 노출된 광고에 대해 4부분의 관심영역(AOI.1, AOI.2, AOI.3, AOI.4)을 설정하고 페이스북 사용자들이 가장 오래 응시하는 광고의 위치를 분석한 결과 사용자들은 페이스북 오른쪽 상단에서 두 번째 구역인 AOI.2에 가장 오랜 시선을 두었다. AOI.1, AOI.4, AOI.3의 순서로 응시순서를 추적한 실험에서도 페이지 오른쪽 상단에서 두 번째 광고에 대한 태도가 가장 좋았으며 처음과 마지막 그리고 세 번째 광고의 순으로 광고태도가 긍정적인 것으로 조사되었다.

• 한국과학교육학회지
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• 제32권9호
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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.