• Title/Summary/Keyword: 눈을 감은 지속시간

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Emotion Classification Method Using Various Ocular Features (다양한 눈의 특징 분석을 통한 감성 분류 방법)

  • Kim, Yoonkyoung;Won, Myoung Ju;Lee, Eui Chul
    • The Journal of the Korea Contents Association
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    • v.14 no.10
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    • pp.463-471
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    • 2014
  • In this paper, emotion classification was performed by using four ocular features extracted from near-infrared camera image. According to comparing with previous work, the proposed method used more ocular features and each feature was validated as significant one in terms of emotion classification. To minimize side effects on ocular features caused by using visual stimuli, auditory stimuli for causing two opposite emotion pairs such as "positive-negative" and "arousal-relaxation" were used. As four features for emotion classification, pupil size, pupil accommodation rate, blink frequency, and eye cloased duration were adopted which could be automatically extracted by using lab-made image processing software. At result, pupil accommodation rate and blink frequency were statistically significant features for classification arousal-relaxation. Also, eye closed duration was the most significant feature for classification positive-negative.

Implementation of Drowsy Prevention System Using Arduino and YOLO (아두이노와 YOLO를 이용한 졸음 방지 시스템 구현)

  • Lee, Hyun-Ae;Shin, Seong-Yoon
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.25 no.7
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    • pp.917-922
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    • 2021
  • In modern society, deaths and property damage due to drowsiness occur every year enormously. Methods to reduce such damage are being studied a lot in all walks of life, and research on preventing drowsy driving is particularly active in automobiles. In this paper, as an Arduino-based water gun firing system that learns open and closed eyes using YOLO, we propose a drowsy prevention system that fires a water gun when the duration of the closed eye exceeds a certain time. This system can be applied and used in various fields, but especially when applied to a car, it is not necessary to purchase expensive specifications and if you pay a little attention, you can reduce accidents caused by drowsy driving by 100% at a very low cost. In addition, it can be said that it is an independent system that overcomes different specifications for each company.

The Status of Contact Lens Wearing, Management and Eye Health Awareness Among Female University Students in Jeju Area (제주지역 여대생들의 콘택트렌즈 착용 및 관리 실태와 눈건강 인식)

  • Choi, Ji Young;Song, Yun Young;Byun, Jong Chul
    • Journal of Korean Ophthalmic Optics Society
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    • v.21 no.3
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    • pp.203-214
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    • 2016
  • Purpose: The purpose of this study is to analyze the status of contact lens wearing, management and awareness of eye health knowledge among female university students in Jeju area and to utilize the basic data for education and management of contact lens. Methods: Data for this study were collected from the 236 female university students in Jeju area who have a contact lens experience from May 1, 2016 to June 11, 2016. Results: We found the status of contact lens wearing and management of subjects and there were different correlations between discomfort and awareness of eye health knowledge among the subjects who have different characteristics. There were also correlations in discomfort, the average days of contact lens wear per week, initial wearing day and action when they have any discomfort in some contact lens wearers. Conclusions: We realized the status of contact lens wearing and management of female university students and it suggests appropriate contact care education and sustainable management system are need to be established for considering daily average wearing time, the type and material of contact lens wear and main discomfort and so on.

Study on the Environmental Factors and Symptoms of VDT Syndrome (VDT 증후군의 환경적 요인과 증상에 대한 연구)

  • Jeong, Seunghui;Lee, Seon Young;Eu, Sun Mi;Kim, Douk-Hoon;Lee, Eun-Hee
    • Journal of Korean Ophthalmic Optics Society
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    • v.14 no.4
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    • pp.65-69
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    • 2009
  • Purpose: Recently incidence of VDT syndrome has gradually increased as extensive use of computers. VDT syndrome reported by VDT workers include musculoskeletal disorder, neuropsychiatric disoders and eye symptoms such as eye strain, tired eyes, irritation and blurred vision. The environmental factors of VDT syndrome include electromagnetic waves, size, brightness and lighting of computer screen, height of a monitor and a worktable, working hours, kind of task, distance between screen and workers, indoor humidity and temperature, indoor air contamination and ventilation. In this study, we investigated the environmental factors related to body symptoms and health effects included in VDT syndrome. Methods: Study subjects were total 120 persons (54 male, 66 female) with age from 19 to 28. We surveyed the body symptoms and physical discomfort when doing an activity in a short distance such as reading book or paper, computer work. The questionnaire included main body symptoms, self-consciousness symptoms of eye, satisfaction of working environment, pain of the wrist when using keyboard and mouse. Results: Most of people (70%) felt physical pain from long time work of computer, paper, electrical apparatus. They mainly complained pain of neck and low back (57.1%), eye (45.2%) and head (31%). With the environmental factors, 78.3% of the subjects complaint pain of eye from inappropriate illumination. Most of the symptoms included 'eye fatigue'(38.3%), 'dryness of eye'(31.9%) and 'blurred vision'(23.7%). Subjects in this study complained discomfort of their chairs and most of them experienced pain in the wrist when using keyboard or mouse. Conclusions: When people use electrical apparatus or work with paper, people would get their eye fatigue and feeling of physical fatigue because of not harmonizing various environmental factors such as light, space, posture, worktable with theirselves. Therefore, workers should develop preventive method such as self-control of adequate break time to avoid fatigue while VDT work. Work environment should be changed to ergonomic design for optimal visual environment to prevent musculoskeletal disorder through constant research.

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A Geographical Study on Healing Spaces in Daily Life Centering on Psychological Counselling Caf$\acute{e}$s (일상적 삶에서의 치유의 공간에 관한 지리학적 고찰: 심리상담카페를 중심으로)

  • Park, Sookyung
    • Journal of the Korean Geographical Society
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    • v.49 no.4
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    • pp.546-562
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    • 2014
  • This research attempts to investigate the geographical approaches on healing, which have been neglected in geography relatively, comprehensively and to examine the meaning of healing in daily life from the viewpoint of the managers of psychological counselling caf$\acute{e}$s. According to the results of this research, exposed healing spaces such as mental clinics or counselling centers are regarded as cultural stigmatic spaces; besides, psychological counselling caf$\acute{e}$s decrease psychological distance or resistance and people calling for healing can access these healing spaces easily. Second, healing spaces from a perspective of modern people mean geographical boundaries as refuges for a brief time; accordingly, the users' activities in psychological counselling caf$\acute{e}$s as instant or unexpected healing spaces in daily life are interpreted as special experiences without any emotional burdens. And these psychological counselling caf$\acute{e}$s are regarded as the spaces where can experience healing repeatedly and continuously. Third, psychological counselling caf$\acute{e}$s were changed into general caf$\acute{e}$s as open spaces; therefore, they can penetrate deeper into daily life rather than others.

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The Effect of Artificial Tear Components on Tear Film Stability of Dry Eyes in the Early Stage of Soft Contact Lenses Wear (소프트콘택트렌즈를 착용한 건성안의 착용초기 눈물막 안정성에 인공눈물 성분 조성이 미치는 영향)

  • Kim, So Ra;Lim, Jung A;Jung, Ji Hye;Byun, Hyun Young;Park, Mijung
    • Journal of Korean Ophthalmic Optics Society
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    • v.21 no.3
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    • pp.191-201
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    • 2016
  • Purpose: In the present study, the effect of artificial tears with different ingredients on tear film stability and subjective symptoms of dry eyes in the early stage of soft contact lenses wear was investigated. Methods: The three kinds of artificial tears and saline solution were respectively applied onto 50 dry eyes which wore soft contact lenses made of etafilcon A. Then, non-invasive tear film break-up time (NIBUT) was measured at every five minutes for 30 minutes right after the instillation of artificial tears, and the changes in blink rate and subjective symptoms were estimated after 30 minutes from the instillations. Results: All three kinds of artificial tears increased NIBUT larger than saline. The effect of increasing NIBUT immediately after the instillation of artificial tears was the largest when the artificial tear containing viscosity enhancer was used. The duration time of the effect was the longest when the artificial tear having both surfactant and viscosity enhancer was applied. The blink rate was not significantly changed when both artificial tears and saline solution were instilled. Subjective symptoms were significantly improved by the instillation of both artificial tears and saline solution and dryness, irritation, tiredness, stiffness, dazzling were improved by the use of most solutions. However, the subjective symptoms were rebounded to the level before the instillation of artificial tears after 30 minute-instillation. Conclusions: It was revealed that both artificial tears and saline solution could improve the subjective symptoms of dry eye in the early stage of soft contac lenses however, the effect of these solutions on the tear film stability was different according to the components. From the results, it is suggested that the proper selection of artificial tears is necessary for the improvement of dry eye symptoms at the early stage of soft contact lenses wear in dry eye.

A Comparison Study on the Internet Addiction and Health Problems of Middle School Students between Urban and Rural Area (도농간 중학생의 인터넷 중독과 건강문제 비교연구)

  • Yeon, Mi-Jung;Kim, Keon-Yeop;Lee, Moo-Sik;Hong, Jee-Young;Bae, Seok-Hwan;Hwang, Hye-Jeong
    • Journal of the Korea Convergence Society
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    • v.1 no.1
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    • pp.41-47
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    • 2010
  • This study was conducted to investigate determinent factors of the internet addiction that have influenced on middle school students. We randomly selected each one middle school in urban and rural areas, and conducted survey in 862 students of 2nd and 3rd grade from September 1 to 15, 2005. By using a statistical program called SPSS10.0, the data collected thereby were analyzed through a series of statistical methods including $x^2$-test, logistic regression analysis. The result of logistic regression analysis showed that the significant variables in urban area were resting time and using time a day. In rural area, sex, economic level, resting time and using time a day were significant variables. Higher status of internet addiction showed significant relationship with physical problems, anxiety, maladjustment to school, insufficient sleep time, fatigue in eyes, headache, pain in neck or shoulder, chronic fatigue, reduced vision, weight reduction, indigestion, xeroderma and adjustment to school. Especially, resting time and using time a day have dominant influence on internet addiction. And in case that the groups who showed high addiction tendency, there were negative health problem by physical, mental and social problem. To prevent internet addiction health education programs of right internet use and time, importance of rest, and health problems must be considered in internet addiction prevention policy.

A Study on the Change of Corneal Refractive Power before and after Wearing RGP Contact Lenses by Flat Fitting and Alingment Fitting with Diagnostic Method (RGP 콘택트렌즈의 진단적 피팅법에 의한 플랫한 피팅과 얼라인먼트 피팅 착용 전·후 각막 굴절력의 변화에 관한 연구)

  • Lee, Dae-Won;Kim, In-Suk
    • Journal of Korean Ophthalmic Optics Society
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    • v.19 no.2
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    • pp.163-169
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    • 2014
  • Purpose: This study is for compared the change of corneal refractive power before and after wearing of rigid gas permeable contact lense with diagnostic method which is 1 D flatter than alignment fitting on right eye and alignment fitting on left eye for 2 months and investigate the preference. Methods: Twenty middle school and high school students (40 eyes) who had never worn a contact lense before for no corneal topographical change, no ocular disease, no experience of ophthalmic surgery and have normal tear amount were selected for this study and corneal refractive power were examined before wearing rigid gas permeable contact lense and adaptation status and corneal examination were performed after 10 days of wearing and after cheking up the continuation of wearing, all candidate wear contact lens 8 hours per day for 2 month and corneal refractive power were compared. Results: After 2 months of wearing with 1 D flatter than the alignment fitting on right eyes, there was significant difference in the central corneal refractive power was $43.84{\pm}1.33D$, flat K power was $43.05{\pm}1.29D$, and steep K power was $44.61{\pm}1.42D$ decreased than before wearing (p<0.001, 0.001, 0.047). The e-value of the principal meridians also shows statistically significant difference (p=0.037, 0.015). After 2 months of wearing with alignment fitting on left eyes, the central corneal refractive power was $44.40{\pm}1.26D$, flat K power was $43.57{\pm}1.23D$. and flat K e-value was $0.58{\pm}0.05$ which showed no statistically significant difference (p = 0.769, 0.614, 0.181). But steep K power was $45.25{\pm}1.36$, and steep K e-value was $0.45{\pm}0.18$ which shows statistically significant difference (p=0.018, 0.027). Conclusions: Consider the comfort, clear vision, dryness for preference fitting investment, 6 students (30%) prefer right eye which is 1 D flatter fitting, 14 students (70%) prefer left eye which is alignment fitting. For rigid gas permeable fitting needed for accurate examination and should prescribe the alignment fitting which is suitable for each cornea.