• 한국HCI학회:학술대회논문집
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• 2007.02a
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• pp.16-24
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• 2007

모바일 폰은 최근 관심의 대상이 되고 있는 사용자 제작 컨텐츠 (User-Created Content: UCC)의 생산과 공유를 위한 중요한 수단이다. 또한 HSDPA나 4G와 같은 차세대 이동통신 기술은Flickr나 YouTube 등의 웹 사이트에서 제공되고 있는 UCC 서비스가 모바일 폰을 통해서도 더욱 활발히 이용될 수 있는 가능성을 제시하고 있다. 그러나 모바일 폰이 가지고 있는 작은 화면 크기와 불편한 입력 장치라는 기본적인 한계는 모바일 UCC 서비스의 성공에 큰 장애 요인으로 작용할 수 있다. 따라서 본 연구는 정보 구조 (Information Structure) 및 정보 시각화 (Information Visualization)와 관련된 기존 이론 및 연구들을 기반으로 4가지 다른 모바일 폰 인터페이스들을 개발하고, 사용자들의 모바일 폰을 통한 탐색적 UCC 서비스 사용을 지원하는데 어떠한 인터페이스가 더 적합한지 실험 방법론을 통해 검증하는 것을 기본 목적으로 한다. 본 연구를 위하여 개발된 인터페이스들은 컨텐츠 구조의 관점에서 폴더 기반 계층 구조 (Folder-Based Hierarchical Structure)이나 태그 기반 네트워크 구조 (Tag-Based Network Structure)를 가지고 있으며, 컨텐츠 시각화의 관점에서는 고정 버튼 (Fixed Buttons)이나 멀티 디스플레이 버튼 (Multi-Display Buttons)를 가지고 있다. 66명의 실험 참가자들을 대상으로 한 실험 결과, 사용자들은 탐험 지향적 탐색 과업 (Exploratory Browsing)에서 태그 기반 네트워크 구조 또는 멀티 디스플레이 버튼이 제공된 모바일 인터페이스에 대하여 상대적으로 더 높은 유용성, 즐거움, 만족도, 향후 사용의도 등을 나타내었다.

• Journal of Broadcast Engineering
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• v.17 no.1
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• pp.49-59
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• 2012

Although 3D stereoscopic movies had been paid attention to a few times since the 1900's, the interest had not been last. Most researchers pointed out the reason came from human factors because the early in the 3D technology growth had to develop technological possibility to realize 3D videos and ignore the importance viewers' perspective. In the 2D video research, many studies have explored the factors which make people got immersed or involved and felt visual fatigue, but they have not been the main issues in the 3D research until now. The present research believes human factor issue is one of the most important parts to accelerate 3D industry and thus, we try to make reliable and valid assessments to evaluate 3D video which are perceived characteristics, impression, and presence.

• Journal of the Korea Society of Computer and Information
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• v.26 no.4
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• pp.161-168
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• 2021

In this paper, it is a system that informs people who take medication periodically to facilitate the convenience of the elderly and the disabled. It is a system that measures the full weight of pills that need to be taken for a week using a weight sensor, and then determines whether or not the pills are taken by measuring the weight of the reduced pills again when the user takes them. For people with disabilities who are unable to move, it includes the function of automatically transporting medicine to the user-set location at the time of use using a line tracer based autonomous vehicle. It is also configured to inform users who have not taken the pill through an alarm that includes visual and auditory functions at a specific time to inform them of this. This work attempts to help users take their medication without forgetting by segmenting the task performance process of such a system through simulations.

• Korean Journal of Agricultural and Forest Meteorology
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• v.19 no.3
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• pp.180-194
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• 2017

Agricultural hazards management technology, which would allow individual farms to respond preemptively, has been developed. A preliminary system developed in the previous study provides precise weather forecasts by farms, notification of weather hazards by crops and delivery of response guidelines (http://www.agmet.kr). Although the GIS map-based alarm system has been implemented for a number of farmers and their farms, its user interface was not designed for individual users who seek information at their farms. In this study, we have developed a mobile application to provide early warnings of weather hazards up to 10 days in advance. A set of information including field-specific weather, crop growth stages and weather hazard alerts can be delivered to individual farmers through their mobile phone. This would guide users to access the map-based system using their smartphone to obtain field-specific weather information by the growth stage of cultivated crops. This would help the farmers make the better use of the existing weather-hazard GIS map-based alarm system.

• 한국신재생에너지학회:학술대회논문집
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• 2010.06a
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• pp.192.2-192.2
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• 2010

일반적 의미의 소수력발전은 계곡이나 저낙차의 하천에서 시도되었으나, 한국의 지형과 강수패턴등은 소수력발전을 활성화하기에 어려운 점들이 있었다. 이에 최근에는 정수장, 하수처리장등과 같은 인공구조물에 소수력발전을 설치 운영하는 방향으로 가고 있으며, 특히 화력발전소 냉각공정에 사용되는 해수를 이용한 소수력발전이 크게 성공하였고 확대설치 되어가고 있다. 해안에 위치하는 LNG인수기지에서는 LNG의 기화에 해수를 열원으로 사용하며, 기화공정에서 열교환 후 바다에 배출된다. 이 때 기화해수와 공기와의 접촉으로 생성된 거품은 해양미생물과의 복합작용으로 쉽게 깨어지지 않고 바다로 떠내려가게 된다. 이러한 거품은 시각적 거부감으로 인하여 인근어민들의 불편함을 야기하고 있으며, 또한 배출해수와 일반해수와의 온도차로 인한 인근 어장이나 양식장의 어획고에 미칠 수 있는 부작용의 가능성에 대한 우려는 더욱 방류해수의 적절한 처리를 필요로 하고 있다. 이러한 방류해수의 거품생성을 해결하는 데 있어 근본적인 해결방법은 심층배수법인데, 심층배수 구조물에 발전수차를 추가 설치만 하면 수력발전이 가능하다. 방류해수의 거품관련 환경문제를 해결하면서 동시에 청정전력을 생산할 수 있는 해양소수력발전에 대하여 KOGAS에서는 LNG 인수기지에의 적용가능성을 분석하고 있으며, 방류해수의 낙차와 조수간만의 차를 이용하는 해양소수력발전을 LNG 인수기지에의 적용하는 것으로는 세계최초의 시도이다. 주변지형에 따른 입지여건을 분석하고, 해수계통분석, 소수력발전방법, 수차종류, 수차용량, 수차개수, pond의 크기등을 결정하고, 수리해석 및 경제성분석을 수행할 것이며 소수력발전의 타당성여부에 대한 가늠을 잡고자 한다.

• 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.

• Journal of the Korea Convergence Society
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• v.13 no.2
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• pp.55-65
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• 2022

The purpose of this paper was to investigate the relationship between cybersickness symptoms and visual function and to determine whether visual perception training is effective in reducing symptoms of cybersickness. The study subjects were healthy adult males who experienced the same virtual reality program for 15 minutes. Afterwards, the VR satisfaction score and cybersickness level were measured and classified into a comfortable virtual reality program viewer group (CVR group, 20 people) and an uncomfortable virtual reality program viewer group (UVR group, 20 people). Visual function test was performed on all subjects, and the vision therapy training program was applied to the UVR group once a week for 40 minutes 12 times, and then the visual function and SSQ questionnaire were re-evaluated. Subjects with diplopia were 55% in the UVR group and 5% in the CVR group, which was significantly higher in the UVR group, there were differences in stereopsis, exophoria, near point convergence(p<.01) and vergence function(p<.001) between the two groups. After vision therapy, changes in SSQ, stereopsis, near point convergence, and vergence function of UVR user group were positively changed(p<.01). Therefore, cybersickness symptoms are related to visual function, it seems that the vision therapy can be used as a way to alleviate the symptoms of cybersickness.

• Journal of the Korea Convergence Society
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• v.6 no.1
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• pp.35-41
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• 2015

This study mostly concentrates on the ease of access to the hospital for the physically handicapped and investigated the condition of facilities for disabled of 59 hospitals in Seoul. For investigation, this research developed tool based on Korean disability law. An improvement plan which will deal with the safety and accessibility for the physically handicapped and for patients are as follows. 1) Safe passage should be designed continuously from entrance to the parking lot. 2) Obstacles on the safe passage should be removed and widen the pathways.

• Journal of Korean Library and Information Science Society
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• v.41 no.3
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• pp.309-327
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• 2010

Regardless of age, ethnic group, status, public library service should be provided equally to everyone. However, people with disabilities have been recognized as a uncomfortable facility for public library. In this study was investigated and analyzed the library anxiety of public library handicapped users utilize K-LAS. As a result, Library anxiety is very differed according to sex, age categories, disability type, the frequency of library visit, purpose of visit, Especially, the factor on library staff and psychological.emotional factor was high.

• Journal of Platform Technology
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• v.8 no.1
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• pp.33-40
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• 2020

The purpose of this study is to identify factors in selecting the elective ICT utilization lecture and to find positive and negative elements of the lecture through conducting topic modeling analysis of text mining of the narrative lecture evaluation. In order to do so, from pre-processing of data, keyword frequency analysis to wordcloud visualization and topic modeling analysis have been conducted from 'reasons of selecting the lecture,' 'improvements to be made on the lecture,' and 'what I liked about the lecture' categories regarding the ICT utilization lecture which was opened in the second semester of 2019 at M University. The analysis results show that students mostly registered for the ICT utilization lecture at M University to obtain a certificate and the fact being certified and taking the lecture can be done simultaneously is a positive element of taking the lecture. On the other hand, negative element included inconvenience of the classroom setting environment.