• Journal of Digital Convergence
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• v.16 no.10
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• pp.531-536
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• 2018

The purpose of this study is to investigate eye fatigue and analyze symptoms of visual discomfort according to near work in young adults. A survey was conducted on 347 young adults aged 25.37 years (142 male and 205 female participants). The eye fatigue using Conlon questionnaire were surveyed and near work was investigated amounts of daily computer and smartphone. The score of eye fatigue was $13.65{\pm}7.11$ in less than 2 h/d, $16.83{\pm}6.77$ in 2~4 h/d, $18.88{\pm}6.60$ in 4~6 h/d, and $18.83{\pm}5.62$ in more than 6 hours(p=0.001). Also, headache(p<0.030), re-reading(p<0.036), and movement and fading(p<0.001) symptoms increased according to amounts of near work.

• Journal of Industrial Convergence
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• v.22 no.1
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• pp.117-125
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• 2024

The purpose of this study is to investigate the impact of airline customers' technology readiness on TBSS quality and intention to use. Data were collected from 153 outbound customers waiting for kiosk self-check-in and self-bag drop. For data analysis, CFA and correlation analysis were conducted to test reliability and validity, and the hypothesis was tested using SEM. The results are as follows. Among the technology readiness factors, optimism and innovativeness were found to have a significant positive effect on TBSS quality. Discomfort was found to have no effect on TBSS quality, and insecurity was found to have a significant negative effect on TBSS quality. Second, TBSS quality was found to have a significant positive effect on intention to use. Third, optimism and innovativeness were found to have a significant positive effect on intention to use, while discomfort and insecurity had no effect. Therefore, optimism and innovativeness are important to improve TBSS quality and intention to use.

• Journal of dental hygiene science
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• v.11 no.4
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• pp.353-359
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• 2011

This study was designed to identify a subjective symptom level by Indoor air according to ventilation system in Dental Clinic. The number of respondents was 582 who work in dental clinic and period of investigation was October 2010 through January 2011. A structured questionnaire was employed to evaluate the level of participants' sociodemographics, job-related factors, work place condition, a subjective symptom. Most of respondents were answered that time for symptom to begin was at around 2 P.M. and time for symptom to feel serve pain was at around 3 P.M. and ventilation frequency per a day was often in case of individual cooling and heating system. More often natural ventilation and in case of individual cooling and heating system, the level of subject symptom was low and multiple regression analysis has found that indoor air quality related elements were main factors that influence to the feeling of satisfaction in work place. The results of this study suggest that more often natural ventilation was very important to reduce the level of subjective symptom. Thus, a management program for indoor air quality is strongly recommended by natural ventilation, maintenance man for promotion of quality of life in dental hygienist and to improve dental service and competitiveness.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.23 no.3
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• pp.67-79
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• 2024

These instructions give you guidelines for preparing papers for JDCS. Recently, the use of digital devices like kiosks and smartphones has expanded, leading to the active provision of digital-based services in the transportation sector, such as choosing transportation modes and checking routes. This study analyzes the relationship between user discomfort when using digital transportation services and mobility. It also examines the moderating effect of technological proficiency on this relationship. The study found that 16.4% of participants experienced discomfort, with an average mobility score of 48.4 points and a technological proficiency score of 3.78 points. Discomfort with digital transportation services was positively correlated with mobility. Additionally, technological proficiency positively influenced mobility. This study analyzes and presents the impact of technology utilization ability on mobility. These findings can be used as basic data for making policy on the need to revitalize the use of digital-based transportation service and bridge the digital divide.

• Journal of Chest Surgery
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• v.32 no.2
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• pp.175-180
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• 1999

Background: Since 1992, we developed the technique for video endoscopic sympathectomy to treat palmar hyperhidrosis. It was soon proven to be a simple and effective therapy for essential hyperhidrosis. Compensatory hyperhidrosis, however, is the main cause of patient dissatisfaction after video-assisted thoracoscopic sympathectomy. According to many authors, initial satisfaction rate was high(94-98%), but it was declined with time (66%) due to mainly to embarrassing side effects. Material and Method: From January 1992 to February 1998, the thoracoscopic T2 sympathicotomy, T2 sympathectomy and T2-4 sympathectomy were performed in 315 patients suffering from Essential hyperhidrosis in the Department of Thoracic and Cardiovascular Surgery in the Respiratory Center of Yongdong Severance Hospital Seoul, Korea. Eighty-nine patients underwent T2 sympathicotomy, and Eighty-eight patients underwent division T2 sympathectomy. Result: All of the treated patients obtained satisfactory alleviation of essential hyperhidrosis. The global rate of compensatory sweating were ; 64.0% in T2 sympathicotomy, 73.8% in T2 sympathectomy and 87.8% in T2-4 sympathectomy. The rate of embarrassing or disabling compensatory sweating was significantly higher in T2 sympathicotomy 15.7%(14/89) and in T2 sympathectomy 32.8%(28/88) than in T2-4 sympathectomy 58.0%(80/138) with significancy in statistic analysis(p<0.05). Video- assisted thoracoscopic sympathectomy is an effective minimally invasive and effective procedure. Conclusion: We suggest that the incidence and degree of compensatory hyperhidrosis was closely related to the extent of thoracic sympathectomy.

• Proceedings of the ESK Conference
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• 1992.10a
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• pp.35-38
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• 1992

눈의 여러가지 기능 중 장애를 입게 되어 나타나며 일상생활에 지장을 초래하는 시각상의 장애를 가진자를 시각 장애인이라 한다. 인간은 외부에서 입수되는 정보의 80% 정도가 시각을 통해서 들어오게 되는 데, 시각 장애자는 충분한 정보를 접할 수 없기 때문에 일상 생활에서 많은 불편을 겪는다. 복지 사회를 표방하는 우리나라의 경우, 이들 시각 장애자 들도 정상인들과 다름없이 생활 할 수 있도록 각종 편의 시설과 보조기구를 개발 제공해 주어야 함에도 불구하고 이에 대한 보살핌이 미약한 실정이다. 본 연구에서는 시각장애자들을 위해서 공공 시설물 가운데 카드 공중 전화기를 택하여 이들이 사용하기 편리하도록 디자인 하였다.

• The Journal of the Acoustical Society of Korea
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• v.5 no.1
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• pp.35-40
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• 1986

본 연구는 펄스 반사법을 이용하여 금속 재료 단면의 영상을 얻는데 그 목적이 있다. 기존의 탐 상기는 대부분 A - 스캔 방식으로 결과를 전시하여 검사자가 직접 CRT 상에 나타난 결과를 판독해야 하므로 숙련자라 하더라도 어느정도 오차가 수반되며 판독에 시간이 요하는 등 불편이 따른다. 본 연구 에서는 판독 과정을 자동화함으로써 정확도와 검사 속도를 개선하였으며 탐촉 지점은 스텝핑모터를 이 용하여 일정 간격으로 제어하였다. 도 탐상 결과를 B-스캔 방식으로 영상 처리함으로써 재료 단면의 상 태 파악을 용이하게 하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.1080-1081
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• 2015

기존에 음악치료 시스템이 많이 활용되고 있다. 그러나 시스템 내의 문제가 고정적으로 되어있어서 수정 및 변경을 하기에 많은 불편함이 있다. 따라서 문제 생성의 유연성을 높이고자 신호 시제 논리를 활용한 음악치료 시스템을 개발해 본다.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.7 no.4
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• pp.79-88
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• 2004

본 연구는 실내 환경의 경로탐색을 위한 실내녹화 효과의 적용 및 그로 인한 실내녹화의 환경 분석을 위해 수행되었다. 이 환경 분석은 실내공간 이용자들의 공간 인지의 어려움을 개선하고자 하는데 그 기초를 두고 있으며, 이 공간 인지의 불편함을 일으키는 인자인 환경적 설계 특징을 개선하고자 한다. 이러한 환경적 인자의 설정을 통해 실내 환경 개선 및 환경적 설계기준이 마련되어진다. 본 연구에는 4학년 학부생 57명이 선정되었고, Spielberger 상태 특성 불안 검사를 통해 불안정도가 높은 피험자와 불안정도가 낮은 피험자 두 그룹으로 범주화하였다. 실험 참여자들은 건물 실내 환경의 지정된 공간을 찾아가는 두개의 다른 경로탐색 환경을 인지하도록 하였다. 원래의 건물 실내 환경공간과 시뮬레이션 작업에 의한 실내녹화 공간이 설치된 새로운 건물 실내 환경공간의 두개의 경로탐색 환경이 본 실험에 이용되었다. 실험 참여자들은 실내녹화 공간이 설치된 경로탐색이 용이한 공간을 인지함으로써 the STAI, the Hospital Anxiety and Depression Scale, the Positive and Negative Affect Scale이 개선되었고, 불안정도가 낮은 피험자들이 불안정도가 높은 피험자에 비해 실내녹화 공간이 설치된 경로탐색이 용이한 공간을 좀더 적극적으로 인지하는 것으로 나타났다. 본 연구의 의의는 실내녹화 공간의 경로탐색 효과를 규명하고, 실내 환경의 미학적 환경계획을 시행하여 실내공간 이용자들의 미학적 관점 및 공간 인지를 높이는데 기여하였다는 점이다.

• The Journal of the Korea Contents Association
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• v.16 no.11
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• pp.128-138
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• 2016

On 23th December in 2015, Constitutional court of Korea decided the Resident Registration Act which could not changed one's Resident Registration Number was Unconformable to Constitution. And declared that the Resident Registration Act had to amend the article. This study analyzes the issues and preferences of people about the modification methods of Resident Registration Number System. In result, the residents agree on the autonomy of residents registration number change and prefer not including personal information to including personal information in registration number system. And the residents want to operate the Second number system besides resident registration number. However, they don't want to pay the change cost of resident registration number system. This results give a few of implications when the change methods of resident registration system would be prepared.