• KEPCO Journal on Electric Power and Energy
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• v.1 no.1
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• pp.55-59
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• 2015

Denial of Service (DoS) attack is to interfere the normal user from using the information technology services. With a rapid technology improvements in computer and internet environment, small sized DoS attacks targeted to server or network infrastructure have been disabled. Thus, Distributed Denial of Service (DDoS) attacks that utilizes from tens to several thousands of distributed computers as zombie PC appear to have as one of the most challenging threat. In this paper, we categorize the DDoS attacks and classify existing countermeasures based on where and when they prevent, detect, and respond to the DDoS attacks. Then we propose a comprehensive defense mechanism against DDoS attacks in Control System to detect attacks efficiently.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.709-710
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• 2009

Current Serious games for medical treatment and rehabilitation are not usually suitable for actual patients because of the inconvenient user interfaces. The disabled or rehabilitants have limited ability to control the game contents. Therefore, it is very important to develop proper interfaces for such serious games. In this paper, we propose a serious game that utilizes the Nintendo wiimote controller and pattern recognition techniques. We also show the possibility of such contents for the future application to actual rehabilitation.

• Archives of design research
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• v.20 no.3 s.71
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• pp.289-298
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• 2007

The EGI system is a new communication method in limelight for helping disabled users to input and handle information on the computer more easily. However, due to the EGI system's "JEM(Jittery Eye Movements)" generation, it actually increases heavy psychological and physiological stresses for the user to input or perceive the target information on a machine. This study illustrates how to resolve this "JEM" issue and suggests a method that is easy and simple to be controled by anyone. A demo tool was built and tested to find and prove the reasons for "JEM" This test shows that that the case with snap up is less stressful than without to input text as a final result of the test evaluation in both psychological snap up and physiological brain wave test. Postnatal or naturally acquired, it is found that the disabled can have opportunities for smoother communication, and a possible efficient system development for better communication.

• Journal of Korea Game Society
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• v.20 no.1
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• pp.121-132
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• 2020

This paper is about development of AR board game, "ZOOCUS", combined with board game and AR application for students with intellectual disabilities to improve their sociability, concentration, and working memory. This game, conducted with the support of the Netmarble Foundation in 2019, allows user to select different game level for individual intellectual level. Through the cloud server with network, student's experience can be shared with each other, and play data can be accumulated for objective evaluation of student's capabilities.

• Journal of Families and Better Life
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• v.23 no.6 s.78
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• pp.67-77
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• 2005

The purpose of this study was to evaluate the accessibility of existing multi-household multi-studio type house for developing Senior Congregate Housing. At present, in Korea, 'the Act of Promotion of Convenience and SEcurity for Disabled, Aged, Expectant Mothers, etc.' is applied to only public facilities. Therefore, this study evaluated 7 units -2 multi-household house and i multi-studio type house- in order to grasp the problems caused if the aged would dwell in that type of house, by the items of 'manual for improving the residency of the disabled' which was stipulated by the act above. The data was collected from May to June, 2005. The results were as follows: Firstly, the main entrances, exits and width of stairways had narrow spaces, the handles and bars did not conform with the terms presented in the manual above. Front doors should be opened like a bay for wheelchair use. Secondly, additional lighting apparatus and furniture should be added properly Thirdly, there were several inconformity to the manual for bathroom: improper handles, inadjustable washing-stands, unavailable spaces in front of toilet bowls, and out-of-place showers and taps. Finally kitchen cabinet design improper for wheelchair user. In conclusion, accessibility of existing multi-household or multi-studio type house was not good enough for the aged reside in. Those insufficiencies suggest that more specified standards to enhance accessibility to develop senior congregate housing should be added.

• Proceedings of the Korea Contents Association Conference
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• 2005.11a
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• pp.166-169
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• 2005

While use of a pet bottle with use it is light recently and convenient increases quickly, it is used from the child, also diffusing the user to a pet bottle to people of various classes, such as an old person, a woman, a male, the man in the street, and a disabled person. However, those who are standardized on the basis of the common man with the plan energy of a pet bottle, and cannot attain to the standard, That is, a child and a disabled person may be condemned to the vague situation that a lid cannot be opened or a contents thing cannot be drunk without external help. And the characteristic of a material and production which are called PET Even if convenience is emphasized for the cost reduction of COST, a design is chosen easily, and even if it calls it the man in the street, the point of coming to experience a situation with the difficult time of use can be found well. In research of a book, problem derivation which classifies entering school and a preschool man-and-woman child for a child drink for an object first by the viewpoint of universal design paying attention to such problems, and leads the actual use example of a pet bottle was carried out in true heart, and various notional approach was shown by the solution method.

• 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.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.7 no.5
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• pp.170-179
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• 2008

The disabled and elderly people have a wide variety of functional impairments. By disability and elderly user group definition identification of users needs and specification of emergency support system were studied. Existing technologies including location navigation and information exchange devise and communication systems were analyzed to design proper integrated system for emergency situations. There are two types of services considered in the project: assisted living services(ALS) including health and emergency needs and assisted mobility services(AMS) with transportation needs. To develop emergency support system, functional identification and requirements was studied through the analysis of existing emergency system and organization. The 4-step emergency management scheme was developed to preactive emergency service which include emergency detection identification, response and follow-up steps.

• Journal of agricultural medicine and community health
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• v.42 no.3
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• pp.132-144
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• 2017

Objectives: The purpose of this study was to identify the association between satisfaction with assistive technology devices and psychosocial impact among some mentally or physically disabled children. Methods: The study subjects were 120 disabled children and their primary caregivers who were using rental assistive technology devices in Gwangju and Jeollanam-Do. Data were collected by structured questionnaire composed of general characteristics of subjects, characteristics related with using assistive devices. Quebec User Evaluation of Satisfaction with assistive Technology 2.0 (QUEST 2.0) and Psychosocial Impact of Assistive Device Scale (PIADS). The statistical analysis were performed by descriptive statistics, t-test, ANOVA and Pearson's correlational analysis. Results: The total mean score for QUEST 2.0 was $4.08{\pm}0.66$ (satisfaction with devices, $4.01{\pm}0.70$; satisfaction with the assistive devices service, $4.14{\pm}0.90$) and the mean of PIADS was $1.00{\pm}0.75$ (ability, $0.99{\pm}0.78$; adaptability, $1.04{\pm}0.86$; self-respect, $0.99{\pm}0.74$). The scores of PIADS was statistically significant difference according to usage time of assistive devices. The PIADS was significantly positive correlated with QUEST 2.0 Conclusions: The mentally or physically disabled children reported that the higher level of satisfaction and the more positive impact of psychosocial aspect with assistive technology devices. It would be necessary to perform further studies for addressing the effects of assistive technology devices.

• Journal of Environmental Science International
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• v.14 no.5
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• pp.457-461
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• 2005

The survey of user's satisfactory degree of location, plantings, facilities, operation, and management factors on national parks' camp sites was carried out. Many problems were analyzed and identified. This survey was for proposing the correct way to plan and draft for camping site after this. In addition to, the realization of environmental education through nature friendly recreation was aimed at. According to the result of the survey, the followings were suggested as necessities to improve the camp site. 1. Repair and replacement of insufficiently managed facilities should be aimed at. 2. Facilities for a handicapped person should be preferentially introduced. 3. Active management and publicity in low-demand season that practiced by developed countries should be carried out. Seasonal program for various age groups should be operated. 4. Surrounding tourist site, camp site, and trail should be organically connected by shuttle bus and other transports. A survey was carried out for the user satisfaction in the campsites of national parks. Based on this survey concerned with the location, planting, facilities, operation and management, the problems were identified and analysed to improve future design and plan of the campsites. This study aims for the realization of environmental education through nature friendly recreation. The following points are suggested as needed according to the survey result. 1. damaged facilities should be repaired or replaced. 2. introduction of the facilities for disabled should be prioritized. 3. consistent and active management and publicity work should be operated in the off-peak season. and the seasonal activity programs for the various age groups should be provided. 4. the site should be well connected with other surrounding campsites and tourist sites using the shuttle bus and other transport method.