• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.5
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• pp.1677-1684
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• 2010

Recently, due to the development of mobile phone and supply of smart phone, many contents have been developed. Especially, since the small-sized cameras are equiped in mobile devices, people are interested in the image based contents development, and it also becomes important part in their practical use. Among them, the character recognition system can be widely used in the applications such as blind people guidance systems, automatic robot navigation systems, automatic video retrieval and indexing systems, automatic text translation systems. Therefore, this paper proposes a system that is able to extract text area from the natural images captured by smart phone camera. The individual characters are recognized and result is output in voice. Text areas are extracted using Adaboost algorithm and individual characters are recognized using error back propagated neural network.

• Journal of the Korea Society of Computer and Information
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• v.13 no.4
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• pp.51-58
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• 2008

In this paper, we propose a place modeling based on the distribution of scale-invariant features, and a place recognition method that recognizes places by comparing the place model in a database with the extracted features from input data. The proposed method is based on the assumption that every place can be represented by unique feature distributions that are distinguishable from others. The proposed method uses global information of each place where one place is represented by one distribution model. Therefore, the main contribution of the proposed method is that the time cost corresponding to the increase of the number of places grows linearly without increasing exponentially. For the performance evaluation of the proposed method, the different number of frames and the different number of features are used, respectively. Empirical results illustrate that our approach achieves better performance in space and time cost comparing to other approaches. We expect that the Proposed method is applicable to many ubiquitous systems such as robot navigation, vision system for blind people, wearable computing, and so on.

• Journal of Digital Contents Society
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• v.18 no.4
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• pp.747-751
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• 2017

The log has variable informations that are important and necessary to manage a network when accessed to network servers. These informations are used to reduce a cost and efficient manage a network through the meaningful prediction information extraction from the amount of user access. And, the network manager can instantly monitor the status of CPU, memory, disk usage ratio on network using the SNMP. In this paper, firstly, we have accumulated and analysed the 6 network logs and extracted the informations that used to predict the amount of user access. And then, we experimented the prediction simulation with the time series analysis such as moving average method and exponential smoothing. Secondly, we have simulated the usage ration of CPU, memory, and disk using Xian SNMP simulator and extracted the OID for the time series prediction of CPU, memory, and disk usage ration. And then, we presented the visual result of the variable experiments through the Excel and R programming language.

• Korean Parent-Child Health Journal
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• v.18 no.2
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• pp.47-57
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• 2015

Purpose: The purpose of this study is to discover the nature from the life experience of a person with unilateral acquired blindness and his/her family after losing the eyesight and adapting in the environment and to find the meaning of life and how to solve the problem in psychosocial aspect. Methods: This study uses one of the qualitative research methods which explains how families with the unilateral acquired blind perceive blindness after experiencing it and observes how they signify it. starts with interest in lifestyles of individuals and their families and tries to understand the subjective existences of participants in accessible ways and draw the experiences after becoming one-side blind. It cyclically uses deductive verification process through inductive method and establishing hypothesis using materials. Results: According to the results of this study, unilateral acquired blindness studies, due to shattered life, they did not know what to do. Also, discomfort from struggling in a big tunnel and even will to live were found. trying to go out to the world, seeing the new world, and trying to encourage myself, strong attachment to life was shown to by saying, appeared. Each includes sub-topics such as feeling abandoned after confirmed the blindness, feeling disappointed to doctors, family, and friends, trying to live with hope, struggling in a tunnel with thinking how to live, closing the mind from the world, seeing outside the world in the midst of struggling, trying to forget the past with the will of life, having hope to live with care of family, and trying to keep the rest vision. Conclusion: Firstly, in nursing aspect for their adaptation, programs for disable people and nursing intervention focused on their families should be developed. Secondly, since it can be economic and psychological burden for their families and acquaintances, it is necessary to support the blind so that they can find fitted rehabilitation programs and come back to society. Thirdly, active participation of health care providers may influence social interest the improvement of national welfare policy for the unilateral acquired blind.

• Journal of Wetlands Research
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• v.16 no.2
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• pp.205-212
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• 2014

Ultrasound technology can be applied in various fields including environmental, energy, and material engineering processes. In this study the effect of liquid height/volume on calorimetric energy and sonochemical oxidation was investigated as one of the basic steps for the design of water/wastereater treatment sonoreactors. The liquid height was increased from 0 to $4{\lambda}$ by $1/4{\lambda}$ and it was found that both calorimetric energy and sonochemical oxidation were significantly increased at relatively high liquid height/volume where the power density was relatively low. The sonochemiluminescence (SCL) images for the visualization of the activity of cavitation also showed that larger and more stable active zone was formed with high SCL intensity at high liquid height/volume. Therefore, it was revealed that sonoreactors for water/wasterwater treatment could be significantly effective in terms of removal efficiency and energy consumption.

• Journal of Applied Tourism Food and Beverage Management and Research
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• v.12 no.2
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• pp.121-132
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• 2001

우리가 어떠한 상황에서 불안해진다는 것은 다가올 미래에 대해 확실하게 준비할 수 없다는 사실에 근거합니다. 수많은 선각자와 학자들은 모두들 이러한 불확실성으로 인한 위험 요소들을 확실하게 밝히고자하며 이로 인해 우리로 하여금 더욱 과학적으로 상황을 대처하고 극복하게 하려 합니다. 아시아 지역의 호텔관광시장에 대해 이곳에서 논의되는 것은 과거와 현재 그리고 미래를 넘나들며 현재 이 시장에서 벌어지는 새로운 경향을 파악하고 파악된 자료를 통해 도전과 위험요소를 인지케하는 내용들입니다. 과거는 현재의 원인이 될 수 있고 과거의 흔적은 내일의 같은 형태의 현상이 될 수 있다고 보기에 우리는 미래의 시장을 예측하려 할 때 과거를 검증하고 현재를 숙독해야 하는 것입니다. 과거 속에서 우리는 한때 우리 시장의 고객들이 사회적 성공의 표시로 여행을 즐겼으며, 그것이 전쟁 등과 같은 힘든 시절을 보내면서 휴식과 교육을 목표로 여행을 즐기던 시절이 있었고, 이것이 다시 최근에 들어 고객들의 자기충족과 자아실현의 방법으로 여행을 즐기고 있음을 감지할 수 있습니다. 이러한 경향들의 연장선상에서 우리의 호텔시장은 호텔이 고도로 품격화된 개인적인 서비스를 제공하게 될 것이고, 발달된 정보기술력으로 인해 편리하게 자산관리를 할 수 있고, 쉽게 접근이 가능한 투자자본으로 인해 소유주의 형태가 다국적으로 다각화되는 결과를 낳게 될 것이고, 수많은 패턴들이 존재하지만 기술력의 혁신으로 인해 이를 통한 새로운 상품과 서비스의 개발이 가장 두드러지는 시장이 될 것이 분명합니다. 관광시장에서는 크게 두 영역으로 분리해서 본다면, 하나는 새로운 형태의 고객이고 또 하나는 관광이란 것이 거리를 요하는 것이기에 이를 극복하고자 하는 기술력을 동원한 새로운 형태의 관광체험이라 할 수 있습니다. 새로운 형태의 고객은 보다 자유롭고 의사표현이 열려있는 고객이며 이들은 각자의 자아실현과 충족을 위해 끊임없이 새로운 여행 목적지를 찾는 고객이며, 복잡하지 않고 단순한 형태의 상품과 서비스를 요하며 그들은 또한 시작에서 마무리까지 완성된 서비스를 추구하는 고객이 될 것입니다. 거리를 초월하는 기술력의 발달로 고객은 원거리에서 자기자신의 여행 진행 전부를 쉽게 컨트롤 할 수 있게 되고 특히 가상 현실실현에 대한 기술력은 멀리서도 원거리의 여행 체험을 실제와 버금가게, 그리고 현실에서 겪어야 하는 일체의 장애 없이 체득할 수 있게되는 상황을 고객 앞에 내놓게 될 것입니다. 우리는 지금 새로이 중흥하려 노력하는 아시아의 주요 국가의 호텔관광산업을 의미 있게 짚어보고 내일을 함께 준비하고 있습니다. 여기에 논의되어진 이슈가 아니더라도 우리는 그것들을 새로운 시각에서 검증하고 분석하여 새로이 전개되는 미래의 아시아 호텔관광산업을 함께 준비해야 할 줄 믿습니다.

• The Journal of Korean Association of Computer Education
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• v.21 no.2
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• pp.59-71
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• 2018

The purpose of this study is suggesting the direction for improving web accessibility by analyzing the state of abiding by the web accessibility by the centers for teaching and learning support at the education offices in cities and provinces which provide the learning and teaching materials to the K-12 members and the interested people. For this aim, nine centers for teaching and learning support were evaluated. The primary manual evaluation by two experts and the evaluation by 18 users were conducted. The users were comprised of hearing-impaired people, visually-impaired people, brain-disabled people, the elderly, various browser users, and a variety of operating system users. As a result of the analysis, not a single center for teaching and learning support had conformed to web accessibility in the expert evaluation and the user evaluation. As a result of the expert evaluation, the errors regarding web design improvement, HTML source error correction, and provision of alternative measures for the disabled were found. This study is meaningful in the sense that it provided various discussions with regard to the direction of the future web accessibility evaluation based on the improved web accessibility evaluation method.

• Journal of Digital Contents Society
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• v.18 no.2
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• pp.283-291
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• 2017

Though new body movement based input system immerged in Virtual Reality (VR), VR still has a visually induced motion sickness (VIMS) problem to be accepted for users. VIMS are caused by changes in visually perceived movement that discord with vestibular system's sense of movement. Not only Head-body movements, but also hand gestures to make commands and torso movement can affect visual movement perception by enhancing immersion and its psychological product; presence. The question arises does whole body movement and hand gesture to make commands are more dominant to arousal, presence, and VIMS? To address this question, we conducted "2 (IV1; head-body movements only vs. whole body movements) * 1" between subject design experiment. The results showed that significant effect on whole body movements and arousal, marginally significant effect on presence. Eyewear usage was a moderator between hand gesture and presence relationship.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 1999.11a
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• pp.270-273
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• 1999

Y2k will be able to enormous disaster. The many make an effort to find a solution to problem of Y2k. Problem of Y2k must solution to as follow. First, problem of Y2k solution organization must constructed. Second, in step with each stage-the first, developing and complete stage, stage of Y2k solution must be constructed. Third, solution of Y2k must construct to hierarchy. hierarchy structure constructed form six stage to first stage, first stage is investigation resources, second stage is estimation influence, third stage is planing conversion, fourth stage is working conversion, fifte spot, sixth stage is diffusion on the spot.

• The Journal of Korean Physical Therapy
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• v.19 no.6
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• pp.5-10
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• 2007

Purpose: This study examined whether or not the balance performing ability of the disabled (blindness and deafness) is lower than normal people. Chronometry was used to compare the balance maintaining ability of blind and deaf subjects with that of normal subjects under the same conditions. Methods: In this study, balance foam, eye bandage, earplugs and headphones were used. The balance foam used in this study is smooth with slight elasticity and a convex upper side, 60cm wide, 15cm long and 9cm high. The eye bandage was used to artificially block the sight of the normal subjects, and the earplugs and headphones to block their hearing. Results: The mean time of the normal subjects standing with their eyes open, blindfolded and wearing ear plugs was 26.7, 19.8 and 28.7sec, respectively. The mean standing maintaining time for the blind and deaf subjects was 12.5 sec and 24.1 sec, respectively. The t-test result of the calculated mean time showed no significant difference (p>0.05) between the normal subjects and the normal subjects with their hearing blocked but there was a significant difference between the normal subjects with their hearing blocked and the deaf subjects (p>0.05). Conclusion: There was significance between the normal subjects and the normal subjects with their eyes blocked but there was no significant difference between the normal subjects with their eyes blocked and the blind subjects. Furthermore, there was a significant difference between the deaf and the normal subjects, which corresponds to the report showing that sight has a significant influence on balance.