• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2017.06a
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• pp.209-210
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• 2017

본 논문에서는 시각장애인의 방송시청을 위해 제공되는 화면해설방송에 있어 실제 방송프로그램내의 화면해설오디오의 비율을 정량적으로 분석하는 방안에 대해 제안한다. 이를 위해 약 100 여편의 화면해설방송을 직접 청취하여 비율을 추출하였으며, 소프트웨어를 통한 분석결과와 비교하였다.

• Proceedings of the KIEE Conference
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• 2004.07d
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• pp.2341-2343
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• 2004

전국의 다목적댐 발전소을 본사에서 원격 감시.제어를 행함에 있어 네트워크.감시제어시스템의 연결장애시 결정적인 데이터의 공백시간을 최소화하기 위해 적용된 이중화기술을 소프트웨어/하드웨어적으로 분석하여 SCADA 시스템의 신뢰도 향상에 목적을 두고자 한다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10b
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• pp.172-174
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• 2001

유전자알고리즘을 병렬로 처리하려는 이유는 수행시간의 향상과 최적해의 향상이다. 하지만 이에 대한 연구와 응용이 적은데 이는 연구 환경이 열악하기 때문이다. 즉, 슈퍼컴퓨터와 같은 고가의 장비가 필요하며, 그것이 보편적으로 우리 주변에 있지 않다는 것이 가장 큰 장애가 되었다. 이를 극복하기 위한 방법은 에이전트라는 소프트웨어를 이용해서 유전자 알고리즘을 병렬로 처리를 하는 것이다. 이 연구에서는 이런 방법으로 유전자 알고리즘을 병렬로 처리를 하여도 수행시간의 향상과 최적해의 향상을 보일 수 있는지를 연구한다.

• Journal of Biomedical Engineering Research
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• v.24 no.5
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• pp.411-419
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• 2003

This paper aims at developing 'gyro-mouse' which provides decent and comfortable human-computer interface that supports the usage of such software as an internet-browser in PC for the people paralyzed in upper limbs. This interface operates on information collected from head movement to get the cursor control. The interface is composed of two modules. One is hardware module in which the head horizontal and vertical angular velocities are detected and transmitted into PC. The other is a PC software that translates the received data into movement and click signals of the mouse. The ANN (artificial neural network) learns the quick nodding pattern of each user as click input so that it can provide user-friendly interface. The performance of the system was evaluated by three indices that are click recognition rate. error in cursor position control. and click rate of the moving target box. The performance result of the gyro-mouse was compared with that of the optical-mouse to assess the efficiency of the gyro-mouse. The average click recognition rate was 93%, average error in cursor position control was 1.4∼5 times of optical mouse. and the click rate with 50 pixels target box was 40%(30 clicks/min) to that of optical mouse. The click rate increased monotonously with the number of trial from 35% to 44%. The suggested system is expected to provide a new possibility to communicate with the society.

• The Journal of the Convergence on Culture Technology
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• v.9 no.1
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• pp.581-586
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• 2023

Recently a drama that features a lawyer with autism spectrum disorder has attracted a lot of attention, raising interest in the difficulties faced by people with autism spectrum disorders. If the Autism spectrum gets detected early and proper education and treatment, the prognosis can be improved, so the development of the treatment is urgently needed. Drugs currently used to treat autism spectrum often have side effects, so Digital Therapeutics that have no side effects and can be supplied in large quantities are drawing attention. In this paper, we introduce 'AEmotion', an application and a Digital Therapeutic that provides emotion and facial expression learning for toddlers with an autism spectrum disorder. This system is developed as an application for smartphones to increase interest in training autistic children and to test easily. Using machine learning, this system consists of three main stages: an 'emotion learning' step to learn emotions with facial expression cards, an 'emotion identification' step to check if the user understood emotions and facial expressions properly, and an 'expression training' step to make appropriate facial expressions. Through this system, it is expected that it will help autistic toddlers who have difficulties with social interactions by having problems recognizing facial expressions and emotions.

• The KIPS Transactions:PartD
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• v.8D no.6
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• pp.681-690
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• 2001

In this paper, we propose a steering concept that considers overall aspects in the CBSD (Component-Based Software Development) environments. While many researches which are concentrated on using components, market promotion and component development itself seem to be insufficient. To overcome this problem, we introduce a brokerage concept called“Value-Added Brokerage Concept”that provides the following three services：1) domain architecture-based component promotion, 2) intelligent component search, and 3) white-box service. Domain architecture-based component promotion facilitates balancing component production and promoting architecture-level large scale reuse. Intelligent component search enables to overcome the long time search and selection problem. Finally, white-box service is for solving maintenance problems, which is one of the most critical problem in the CBSD environments. Especially, we expect this proposed concept would be well adapted to our national environments.

• KIPS Transactions on Computer and Communication Systems
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• v.2 no.12
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• pp.541-552
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• 2013

Recently software security of the smart phone is an important issue in the field of information science and technology due to fast propagation of smart technology in our life. The smart phone as the security critical systems which are utilizing in terminal systems of the banking, ubiquitous home management, airline passengers screening, and so on are related to the risk of costs, risk of loss, risk of availability, and risk by usage. For the security issues, software hazard analysis of smart phone is the key approaching method by use of observed failures. In this paper, we propose an efficient integrative framework for software security analysis of the smart phone using Fault Tree Analysis (FTA) and Failure Mode Effect Analysis (FMEA) to gain a convergence security and reliability analysis technique on hand handle devices. And we discuss about that if a failure mode effect analysis performs simpler, not only for improving security but also reducing failure effects on this smart device, the proposed integrative framework is a key solution.

• The Journal of the Korea Contents Association
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• v.18 no.12
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• pp.535-546
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• 2018

This study conducted a meta-analysis to examine syntagmatically on the variables related with recovery among persons with mental illness in Korea. In order to do a meta-analysis, theses and dissertations published between 1999 and 2018 in Korea were reviewed systematically and a total of 24 including studies were selected. Using Comprehensive Meta Analysis (CMA) 3.0 software, this study calculated average effect size and moderator variables related with recovery among persons with mental illness. Results were as follows. First, this study identified a total of 16 variables related with recovery among persons with mental illness. Second, the results indicated that variables which showed large effect sizes included social support(r=.575), empowerment(r=.555), self-efficacy(r=.544), social skill(r=.500), relationship with social worker(r=.482), stigma(r=-.446), family support(r=.418). Third, variables with medium effect sizes included interpersonal relationship capacity (r=.391), agency service satisfaction(r=.366), insight(r=.373) and symptom(r=-.239). Fourth, variables with small effect sizes included work experience(r=.188). Fifth, moderator analyses were conducted utilizing characteristics of residence state (community or mental hospital). Moderator effects were identified in the social support and family support. Based on the findings, theoretical and clinical implications for the recovery among persons with mental illness in Korea were discussed.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.48 no.2
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• pp.1-8
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• 2011

In this paper, we propose a haptic display system that can convert Braille and tactual map(braille map) to tactile information recognizable through sense of touch almost in real-time. The proposed system consists of a haptic display hardware device, which actually delivers tactile signal to visually impaired people, and a device control software program, which converts Braille and tactile information to tactile signal and transfers it to the hardware device. Experimental evaluations of the proposed system were performed with 10 visually impaired persons. Experimental results show that the proposed system can provide similar Braille recognition rate and speed to those of existing Braille information devices. In addition, the proposed system converts tactile information to tactile signal under maximum 1.1 seconds, so that it can provide graphic information in almost real-time which is not possible with existing tactile devices, such as Braille printer.

• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.12
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• pp.129-137
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• 2013

As the usage of computer based systems continues to increase in our normal life, there are constant efforts to enhance the accessibility of information for handicapped people. For this, it is essential to develop new interface ways for physical disabled peoples by means of human-computer interface (HCI) or human-machine interface (HMI). In this paper, we developed HMI using electromyogram (EMG) and electrooculogram (EOG) for people with physical disabilities. Developed system is composed of two modules, hardware module for signal sensing and software module for feature extraction and pattern classification. To maximize ease of use, only two skin contact electrodes are attached on both ends of brow, and EOG and EMG are measured simultaneously through these two electrodes. From measured signal, nine kinds of command patterns are extracted and defined using signal processing and pattern classification method. Through Java based real-time monitoring program, developed system showed 92.52% of command recognition rate. In addition, to show the capability of the developed system on real applications, five different types of commands are used to control ER1 robot. The results show that developed system can be applied to disabled person with quadriplegia as a novel interface way.