• Nuclear Engineering and Technology
• /
• v.53 no.3
• /
• pp.825-832
• /
• 2021

A simulation-based approach is proposed to study the protective actions taken by residents during nuclear emergencies using cognitive findings. Human perception-based behaviors are not heavily incorporated in the evacuation study for nuclear emergencies despite their known importance. This study proposes a generic framework of perception-based behavior simulation, in accordance with the ecological concept of affordance theory and a formal representation of affordance-based finite state automata. Based on the generic framework, a simulation model is developed to allow an evacuee to perceive available actions and execute one of them according to Newton's laws of motion. The case of a shadow evacuation under nuclear emergency is utilized to demonstrate the applicability of the proposed framework. The illustrated planning algorithm enables residents to compute not only prior knowledge of the environmental map, but also the perception of dynamic surroundings, using widely observed heuristics. The simulation results show that the temporal and spatial dynamics of the evacuation behaviors can be analyzed based on individual perception of circumstances, while utilizing the findings in cognitive science under unavoidable data restriction of nuclear emergencies. The perception-based analysis of the proposed framework is expected to enhance nuclear safety technology by complementing macroscopic analyses for advanced protective measures.

• Korean Institute of Interior Design Journal
• /
• v.21 no.1
• /
• pp.40-50
• /
• 2012

This study aims at suggesting the applicability of color combination based upon the characteristics of environmental color perception and the nuance concept of Natural Color System(NCS). The results are summarized below: First, NCS is a scientific coloring system in consideration of the relevance between people, light and environment, to be based on a phenomenological point of view. NCS can be called a psychometric model reflecting our natural color sense. Second, the color triangle established by NCS is one of the methods of expression based on the human visual mechanism, which is classified by two attributes of hue and nuance, not by the three color attributes of hue, lightness and saturation. The nuance concept of NCS implies the impression, atmosphere and tone that are perceived in colors, which are related to lightness and saturation. Accordingly, this paper suggests that the coloring arrangement emphasizing nuance and tone is more useful than hue in color planning. Third, aesthetic impression in environmental color perception is inclusive of instantly perceptive nuance, which is connected with affordance. The affordance is revealed by the different relation of similarity. In this regard, a strong relationship is noticed between color combination and the sense of pleasantness. The hypothesis regarding the complementation and similarity of contrasting nature is judged to provide observers with aesthetic order. Finally, this paper also suggests four harmonizing methods in the NCS color triangle based upon equal blackness, equal whiteness, equal chromaticness and same nuance. At the same time, opposition and a different concept of hue, lightness and lightness are combined complementarily with the nuance value to suggest patterns of color combination.

• KIEAE Journal
• /
• v.6 no.4
• /
• pp.57-67
• /
• 2006

With the coming demographic avalanche as the number of elderly aged 65 and older is expected to double in 20 years in South Korea, the concept of retirement living will be changed in a whole new way. The newest design principles as environmental affordance system for them need to be considered. This study started with the premise that 'Aging in Place' might be the most desirable alternative for the elderly and if so, they may be at greater challenge of living in the home, especially in kitchen. The purpose of this study is to analyze various universal design kitchen products according to five Universal Design criteria with physical or mental characteristics of aging. The five Universal Design principles are 'Supportiveness', 'Adaptability', 'Communicability', 'Pleasantness' and 'Accessibility', which were developed from the previous research. The profile and the trends of the universal design kitchen products were identified with the concrete design examples. The results will be expected to make contributions to developing universal design guidelines for kitchen products, to understanding the nature of universal design paradigm, and to establishing directions for sustainable living of the elderly.

• Journal of Appropriate Technology
• /
• v.6 no.1
• /
• pp.28-36
• /
• 2020

Sustainable appropriate technology requires user-centered design with consideration of the political, cultural and environmental aspects of the area. However, in the preparation of appropriate technology, there is a limit to the prior grasp of the user's intention and experience leading to the actual behavior of the user after the dissemination. As a result, appropriate technologies are often inconvenient for practical use or used for other purposes, contrary to the designer's intention. This study analyzes the case of appropriate technology with an analysis framework that reflects Maier's affordance theory, and proposes a design solution that can overcome the limitations of existing design. Affordance theory is the theory of factors that cause the user to identify and use features through interpretation based on prior knowledge and experience about things. The analysis cases in this study are the interviews with the designers, management education materials, and manager interviews for water purification systems at three of six schools in Binh Dinh Province, Vietnam, from August 2015 to January 2018. The case was attempted to be improved by periodic installation, maintenance, and inspection, but similar problems continued to occur. First, the facility inspections and manager interviews are compared with manager training materials distributed at the time of installation to find inconsistencies. Next, we analyze the designer's intended affordance and the affordances that actually influenced the management behavior. And then, we propose design solutions based on commonly found problems and affordances. This study suggests that it is necessary to apply the design considering the user's behavior before distributing the appropriate technology, and this study will be precedent in the process of finding the improvement through the analysis framework based on the affordance.

• Knowledge Management Research
• /
• v.23 no.3
• /
• pp.45-64
• /
• 2022

With the increasing use of social media, the occurrence of cyber crimes on social media has also increased. In this paper, we focus on online sexual harassment among various cyber crimes and discuss how social media users use social media to avoid online sexual harassment. Drawing on threat avoidance theory, the factors affecting avoidance motivation were identified. Avoidance motivation was measured based on the affordance of social media, and the influence of the degree of sexualization was tested to examine how environmental factors affect motivation behavior. The results indicated that the more users perceived sexualization on social media, the lower their motivation to avoid sexual harassment. Thus, it is important to create an atmosphere on social media where crime is minimized, and users are able to respond appropriately by continuously managing their accounts on these platforms.

• Korean Institute of Interior Design Journal
• /
• no.2
• /
• pp.10-16
• /
• 1994

The purpose of this study was to present systematic interior design guidelines for the elderly housing environment. As an environmental affordance system, Murth 's user benefit criteria was employed to analyze the items of the interior design guidlines in the 5 selected elderly housing literatures. 646 items were collected from the 5 representative literatures on elderly housing design. As a result of the content anaylysis, a set of comprehensive interior design guidenlines which was systematically synthesized based on the Murtha' s user benefit criteria was presented according to the specific spaces. The behaviroral facilitation and physiological maintenance dimension most frequently mentioned in foreign literature. Perceptual maintenance dimension needed to be developed in the future in elderly housing.

• Journal of the Korean housing association
• /
• v.26 no.6
• /
• pp.93-102
• /
• 2015

Most existing residential environment of disabled people has made them exposed to the risk of safety accidents, and therefore hinders their independent living. In this regard, the importance of desirable residential environment has emerged. Some preceding studies have addressed the characteristics of disabled people's residential environment plan; however, the information on what environmental benefits are offered through such characteristics is insufficient. This study aims to analyze the housing design guidelines for disabled people in respect of the benefit of disabled people who are actual users. In this study, essential design guidelines for disabled people verified through expert workshop panel was analyzed based on user benefit theory. According to the study results, the total guidelines have the most characteristics supporting behavioral facilitation, and mainly consist of physiological maintenance characteristics related to disabled people's health and safety. Also, it is founded that environmental affordance essentially required depending on each spatial function was different. The ratio of physiological maintenance item is high in access route, unlike living room, kitchen and bed room where behavioral facilitation is especially emphasized. These findings can be utilized as basic data for customized residential environment plan to realize residential welfare for disabled people.

• Korean Institute of Interior Design Journal
• /
• v.22 no.4
• /
• pp.167-177
• /
• 2013

The environmental considerations should be taken into full consideration in order to make the use of ground space as comfort and efficient as that of ground space. The visual environmental factors which provide visual informations in underground spaces where the environmental information can be acquired only by the surroundings expand their role as affordance for wayfinding. This study focuses on the visual performance evaluation of wayfinding factors on the subway transfer station platform and aisle as major space for movement in four subway transfe stations and analyzes the material, pattern, color, and lighting provided by the visual environment in underground space as directional marked label, regional differentiation and sign system. The results of this study comes are as follows. First, As to the directional marked label at the subway platform and transfer aisle, following patterns are colors, finishing materials and lighting for the sake of safety and convenience, And regional differentiation, following colors are patterns for the space division. Finally sign system which practically provides the most information, however, it is most insufficient to be a space-preception element. Second, According to the type of platform structures, such as an island platform and a separate platform, the main areas of and necessity for the space-perception elements may bring about changes. Third, these four stations that has been analyzed for this study, lighting, compared with color, finishing material and pattern, has been highly insufficient to be a perception element.

• Korean Institute of Interior Design Journal
• /
• v.23 no.6
• /
• pp.221-229
• /
• 2014

In elderly housing facilities where are elderly living facilities, the importance of outdoor space for psychological healing and stability, health improvement and environmental improvement is increasing, since elderly people suffer from depression and are hostile to these facilities. This study aims to identify if outdoor spaces in elderly housing facilities in Seoul have environments appropriate for the elderly and to suggest problems and improvements. For achieving this purpose, nine elderly housing facilities in Seoul were chosen and a field survey was conducted targeting five facilities with outdoor spaces. Based on the previous studies, the concepts of elderly housing facility and outdoor space were organized. Then, a checklist was drawn up as a framework of analysis for evaluating the present state of outdoor spaces of elderly housing facilities and space planning, and improvements were explored. It was found that elderly housing facilities in Seoul had good connectivity and accessibility to the surrounding areas, but there were few supporting facilities, except for resting places. Also, the result of analysis of the present state showed that most elderly housing facilities were located in high lands and the safety of elderly people was being threatened while moving, due to the absence of handrails. In conclusion, it is considered that outdoor space of elderly housing facility should be planned in consideration of safety, affordance and cognition out of the standards of researcher's evaluation tool.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.4
• /
• pp.420-425
• /
• 2016

This study discusses the architectural space's phenomenology, focusing on the physical environment and psychological behavior. Kim, Ju-Tae House, which is divided by special relationship, was analyzed by method of constructing space, and behavioral meaning with the perspective of visual structure. Kim, Ju-Tae House was constructed in a clear way by reflecting the users social, and cultural relationship. It has a relational and independent territories by physically surrounding Chae and wall. Each independent limited space is suggesting the space being opened by accessing the space stage by stage. This method of constructing the space makes the user aware of the relative difference from the induced space experience, and recognize the incremental strong isolation. Between the yard, which is located in the center of the house, forms a three-dimensional layer between Sarangchae and Anchae, emphasizing the spacial depth. The physical space is relatively small but because of the environmental conditions, such as the positioning of the observer's perspective, short cycle reorientation, and overlapped layer, it is recognized as far or deep compared to the actual size. This is the relative method as a visual perspective that is intended, and is understood as an active element that induces the psychological attitude by the recognized environment affordability of the user.