• Journal of the Korean housing association
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• v.11 no.3
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• pp.99-107
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• 2000

The purpose of this study was to identify the universal design characteristics in residential environments. The subjects were 135 physically disabled persons who lived in the rental multi-family housing apartments in Pusan. Interview method was used for this study. They were an average age of 51 years and 63% were male. They were low income families and lived in 12 pyung ($39.75\textrm{m}^2$) apartments. They were asked about what housing characteristics were constraints in their daily living. They pointed out that the constraints in their apartments were as follows: 1) the small amount of space in the bathroom, kitchen, bedroom, and the entrance area of housing unit, 2) the unflat floor level between the bathroom and the hallway, or the balcony and the bedroom, 3) the slippery floor finish in the bathroom, 4) lack of grab bars or handrails in the bathroom and the ramp, 5) the kitchen work centers and the electric switches at improper height, and 6) the steep ramp. Therefore, the universal design characteristics in residential environments were the adequate amount of space, flat floor level, non-slippery floor finish, grab bars or handrails, accessible height, and ramp.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.6 no.2
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• pp.161-166
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• 2006

Localization of mobile agent within a sensing network is a fundamental requirement for many applications, using networked navigating systems such as the sonar-sensing system or the visual-sensing system. To fully utilize the strengths of both the sonar and visual sensing systems, This paper describes a networked sensor-based navigation method in an indoor environment for an autonomous mobile robot which can navigate and avoid obstacle. In this method, the self-localization of the robot is done with a model-based vision system using networked sensors, and nonstop navigation is realized by a Kalman filter-based STSF(Space and Time Sensor Fusion) method. Stationary obstacles and moving obstacles are avoided with networked sensor data such as CCD camera and sonar ring. We will report on experiments in a hallway using the Pioneer-DX robot. In addition to that, the localization has inevitable uncertainties in the features and in the robot position estimation. Kalman filter scheme is used for the estimation of the mobile robot localization. And Extensive experiments with a robot and a sensor network confirm the validity of the approach.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.6 no.3
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• pp.264-269
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• 2006

This paper presents the strategy for searching a hidden object in an unknown area for using by multiple distributed autonomous robotic systems (DARS). To search the target in Markovian space, DARS should recognize th ε ir surrounding at where they are located and generate some rules to act upon by themselves. First of all, DARS obtain 6-distances from itself to environment by infrared sensor which are hexagonally allocated around itself. Second, it calculates 6-areas with those distances then take an action, i.e., turn and move toward where the widest space will be guaranteed. After the action is taken, the value of Q will be updated by relative formula at the state. We set up an experimental environment with five small mobile robots, obstacles, and a target object, and tried to research for a target object while navigating in a un known hallway where some obstacles were placed. In the end of this paper, we present the results of three algorithms - a random search, an area-based action making process to determine the next action of the robot and hexagon-based Q-learning to enhance the area-based action making process.

• Korean Journal of Human Ecology
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• v.19 no.6
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• pp.1127-1137
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• 2010

This study explored ways of changing a detached house which has older residents to a universal design home. This study investigated the residential conditions based on the universal design features and the need of universal design for aging in place. For this study, 153 residents who were living in single detached houses in Columbia, MO, were surveyed using written questionnaires and interviews. Primary findings of residential conditions were showed according to each spaces such as entrance, interior hallway, master bedroom, bathroom and kitchen. The major results are as follows: 1)It was confirmed that major spaces for daily living such as a bedroom, bathroom, kitchen and laundry facilities needed to be on the ground floor. 2)The most dangerous spaces in house were stairs to the upper or lower floors and the bathroom, 3)The need for modification based on universal design were high in order to facilitate aging in place. 4) Finally, elderly people in their seventies had especially strong needs through modification compared to the elderly people in their sixties who had plans to relocate.

• Korean Institute of Interior Design Journal
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• v.21 no.3
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• pp.163-173
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• 2012

Despite a lot of efforts, school violence is getting severe nowadays and especially it seems remarkably occurring among middle school students. Many studies show that most school violence occur in classrooms where the students spend most of their time in studying and socializing for their everyday life. The purpose of this study is to identify design elements of middle school classroom and to suggest some design plans for preventing school violence, in the point of view of CPTED. For this objective, six middle schools were selected from Gangseo-gu, Seoul, and the questionnaire and survey were conducted to identify the status of school violence and the physical classroom environment in each schools. An analysis was carried using SPSS to identify the correlation between the school violence and the physical environmental design elements. The results are as follows : although each selected school shows different status of school violence and the physical environment in classrooms, commonly the occurrence and the fear of violence are related to the classroom environment. Therefore, In order to plan classroom for preventing school violence, 'the proper size of classroom avoiding overcrowd', 'elevation design for the sense of belonging and territoriality', 'improvement of deteriorated environment' should be considered for reduce the causes of violence. And 'maximization of natural surveillance from hallway', 'accessibility of teacher' should be considered for rapid management of violence.

• Journal of the Korean Institute of Intelligent Systems
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• v.18 no.3
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• pp.291-296
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• 2008

This paper presents the dodecagon-based Q-leaning and SVM algorithm for object search with multiple robots. We organized an experimental environment with several mobile robots, obstacles, and an object. Then we sent the robots to a hallway, where some obstacles were tying about, to search for a hidden object. In experiment, we used four different control methods: a random search, a fusion model with Distance-based action making(DBAM) and Area-based action making(ABAM) process to determine the next action of the robots, and hexagon-based Q-learning and dodecagon-based Q-learning and SVM to enhance the fusion model with Distance-based action making(DBAM) and Area-based action making(ABAM) process.

• Journal of the Korean Society of Industry Convergence
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• v.22 no.4
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• pp.427-433
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• 2019

This paper propose a fuzzy inference model for map building and navigation for a mobile robot with an active camera, which is intelligently navigating to the goal location in unknown environments using sensor fusion, based on situational command using an active camera sensor. Active cameras provide a mobile robot with the capability to estimate and track feature images over a hallway field of view. In this paper, instead of using "physical sensor fusion" method which generates the trajectory of a robot based upon the environment model and sensory data. Command fusion method is used to govern the robot navigation. The navigation strategy is based on the combination of fuzzy rules tuned for both goal-approach and obstacle-avoidance. To identify the environments, a command fusion technique is introduced, where the sensory data of active camera sensor for navigation experiments are fused into the identification process. Navigation performance improves on that achieved using fuzzy inference alone and shows significant advantages over command fusion techniques. Experimental evidences are provided, demonstrating that the proposed method can be reliably used over a wide range of relative positions between the active camera and the feature images.

• Korean Institute of Interior Design Journal
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• v.27 no.2
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• pp.118-127
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• 2018

To complete the appropriate pattern language as a planning tool for suburban houses in Korea, this study reviews the characteristics in applying the pattern language to suburban houses in Korea by creating the pattern application examination chart regarding 110 patterns in architecture and evaluating and analyzing 24 examples in terms of the applicability of the patterns, the results of which are as set forth below. Firstly, when grouping the upper 31 patterns by similar characteristics, it was distinguished by the characteristics relating to (i) securing of lighting and viewing; (ii) placing of buildings and space and adjustment of inside and outside privacy through such placing; (iii) placing of proper motion line and functions of adjacent space according to such motion line; and (iv) determining of important space such as personal room, area for couple or children, staircase, entrance, hallway, etc. Secondly, when analyzing the reasons that the lower 41 patterns have not been applied, it was characterized by (i) the work space not suitable for suburban houses or the patterns suitable for commercial space; (ii) the patterns not suitable in Korea due to cultural differences; and (iii) the patterns whose applicability cannot be confirmed due to the limitation of examples and materials used in this study. Thirdly, the analysis of each pattern group (A through M) revealed that the pattern groups D and G are rarely related to suburban houses and J and M are patterns whose applicability cannot be determined in this study. Another characteristics is that the pattern groups B, E, F, I and L which obtain high scores in applicability are importantly reflected in planning for suburban houses in Korea. Fourthly, this study renders the average score of applicability, and the applicability rate, of the examples and confirms the number of the patterns applied in confirmity, patterns partially or potentially applied and patterns not applied at all.

• Architectural research
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• v.18 no.4
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• pp.129-136
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• 2016

People have experienced physical problems including vision problems with aging; some are normal and some are abnormal. When they have abnormal and impaired vision, they have a lower level of life satisfaction than their sighted peers. For the elderly with sight loss, well-designed housing could be an important indicator for their quality of life. Housing adjustment and modification could help the elderly cope with sight loss, do daily activities more independently, and lead to better quality of life. The purpose of this study is to investigate housing conditions for the elderly with vision impaired, state of housing adjustment or modifications, and the effects of housing conditions on the wellness of the elderly in Korea. For this study, 18 housing cases were investigated and a total number of 65 visually impaired people aged over 55 participated. Housing condition of those participated was poor. Most observed home hazards are level differences in living areas, obstacles in the hallway, confined space that is not allowed structural modification, swing doors from wardrobe or cabinets, color contrast, poor lightings, and etc. Majority of households participated in this study did not make modification or refurbishments, rather many of them tend to adapt themselves to their residential environments. Older adults living in better housing condition and under less difficult environments are likely to have higher life satisfaction. The effects of housing condition on wellness could be more influential when individual capabilities (e.g. health condition) are weaker. The findings underline that with intervention of individual characteristics, the effects of housing and physical environment on negative outcomes of vision loss would get ameliorated or reduced.

• Fire Science and Engineering
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• v.29 no.5
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• pp.14-22
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• 2015

This thesis is based on the study of necessity of an addressable emergency broadcasting system to improve evacuation performance in order to minimize human casualty by avoiding the initial evacuation after fires such as the multi-unit dwelling fire in Euijeongbu in 2015. To minimize the damage from fire generated in a complex internal structure such as modern buildings, introduction of adaptable emergency broadcasting system, could increase the efficiency of evacuation by preventing of initial mistaken evacuation directions by alerting the accurate location of fire to the occupants, is needed. As such, this study designed and fabricated the addressable emergency broadcasting system using the existing addressable system. Its performance was compared with a conventional emergency broadcasting system to confirm the necessity of the addressable emergency broadcasting system to improve evacuation performance. The test result showed that the addressable emergency broadcasting system decreased the evacuation time by up to 30.3% in a small-scale model evacuation performance experiment, up to 54.6% in a hallway evacuation performance experiment compared to the conventional emergency broadcasting system.