• Transactions on Control, Automation and Systems Engineering
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• v.2 no.4
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• pp.274-284
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• 2000

In this paper, the design methodology of digital fuzzy controller(DFC) for the systems with time-delay is presented and the qualitative effects of the quantizers in digital implementation of a fuzzy controllers are investigated. We propose the fuzzy feed-back controller whose output is delayed with unit sampling period and period and predicted. the analysis and the design problem considering time-delay become very easy because the proposed controller is syncronized with the sampling time. The stabilization problem of the digital fuzzy system with time-delay is solved by linear matrix inequality(LMI) theory. Furthermore, we analyze the stability of the quantized fuzzy system. Our results prove that when quantization os taken into account, one only has convergence to some small neighborhood about origin. We develop a fuzzy control system for backing up a computer-simulated truck-trailer with the consideration of time-delay and quantization effect. By using the proposed method, we analyze the quantization effect to the system and design a DFC which guarantees the stability of the control system in the presence of time-delay.

• Journal of Distribution Science
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• v.16 no.7
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• pp.47-56
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• 2018

Purpose - This study aims to not only investigate spatial pattern of immigrants' residence and crime occurrences in South Korea, but shed light on how geographic distribution of immigrants and immigrant segregation affect crime rates. Research design, data, and methodology - Th unit of analysis is Si-Gun-Gu municipal level entities of South Korea. The crime data was obtained by Korea National Police Agency and two major types(violence and property) of crime were measured. Most demographic, social, and economic variables were derived from Korean Census Data in 2015. In order to examine spatial patterns of immigrants' distribution and crime rates in South Korea, the present study utilized GIS mapping technique and Exploratory Spatial Data Analysis(ESDA) tools. The causal linkage was investigated by a series of regression models using STATA. Results - Spatial inequality between urban metropolitan vs rural areas was visualized by mapping. Assuming large Moran's I value, spatial autocorrelation appeared to be quite strong. Several neighborhood characteristics such as residential stability and economic prosperity were found to be important factors leading to crime rate change. Residential distribution and segregation for immigrants were negatively significant in the regression models. Conclusions - Unlike the traditional arguments of social disorganization theory, immigrant segregation appeared to reduce violent crime rate and the high proportion of immigrants also turned out to be a crime prevention factor.

• Architectural research
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• v.19 no.4
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• pp.125-134
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• 2017

Rather than the simple adaption of Western design principles to the Korean context, this paper explicates how a unique critical urban design methodology evolved in Korea in the 1960s. Even as the era was a time of major transition and development, most research has offered limited discourse on the topic, imposing a straightforward reading where Japanese colonial influence is supplanted by Western logics. Through the example of the brief but intense activities of the Housing, Urban and Regional Planning Institute (HURPI), this paper offers a more detailed understanding that focuses on the 'how' rather than the 'what' of HURPI's significance. Through first-hand interviews with HURPI director Oswald Nagler and senior member Sung Chull Hong, the research of the institute is revealed as promoting dialectical 'critical design' methodologies that resulted in a sophisticated synthesis of diverse influences from Western, Korean, and Japanese sources. Moreover, the modes of critical design methods are further analyzed in a recently discovered brochure on HURPI's defining research and pilot projects published by the Ministry of Construction.

• Korean Journal of Human Ecology
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• v.10 no.3
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• pp.303-315
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• 2001

The purpose of this study is to evaluate the housing unit and investigate needs of housing in Home Economics curriculum of Home Economics teachers. The questionnaire survey was conducted 98 teachers participated in the minor training course in Chungbuk, August of 2000. When the teachers made their class in the section of housing, they emphasized respectively as the textual order: the space of housing and family life, the utilization of space, clean of residing circumstance in the middle school: and in the high school there was also concerned to the textual order: choice of housing, the house planning, interior design, maintenance of house. The teachers focused into the arrange of furniture and interior design for the students in the class, drawing of a plan in the contents of practical experience and performance. According to the survey results, the main point of class in housing should be emphasized the arranging of own room and function of other spaces in house for the students in the middle school. The high school curriculum should focus on the practical area to connect with the interior design. And in the section of housing it was needed to add the contents of management in the multi-family housing, housing problems, neighborhood environment for elderly, and also community planning.

• The Journal of Korea Robotics Society
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• v.11 no.3
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• pp.115-126
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• 2016

This paper suggests the method of the spherical signature description of 3D point clouds taken from the laser range scanner on the ground vehicle. Based on the spherical signature description of each point, the extractor of significant environmental features is learned by the Deep Belief Nets for the urban structure classification. Arbitrary point among the 3D point cloud can represents its signature in its sky surface by using several neighborhood points. The unit spherical surface centered on that point can be considered to accumulate the evidence of each angular tessellation. According to a kind of point area such as wall, ground, tree, car, and so on, the results of spherical signature description look so different each other. These data can be applied into the Deep Belief Nets, which is one of the Deep Neural Networks, for learning the environmental feature extractor. With this learned feature extractor, 3D points can be classified due to its urban structures well. Experimental results prove that the proposed method based on the spherical signature description and the Deep Belief Nets is suitable for the mobile robots in terms of the classification accuracy.

• Journal of Korean society of Dental Hygiene
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• v.7 no.3
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• pp.285-299
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• 2007

The purpose of this study was to provide basic data of education program and consult for dental implant patient. The 210 of dental patients were selected at five dental clinic located in Jin-ju city. Data were collected by self-administrated questionnaire. A SPSS 10.10 for Windows was used for statistical analysis. The results of the study are summarized as follows: 1. The female responser was 56.2%, the rate of age was thirty years old 26.7%, education level was more than university and college 45.7%, job is company unit 15.2%, income was 100~200man won of 48.6%. 2. Recognition of dental implant was that incase of 'yes' is more than sixty years old 77.3%. 3. The information of implant was from neighborhood 29.0%, and when dental consult 24.3%. 4. The responsor who is everyone can take the dental implant operation is 39.5%, can not take is 32.9%. 5. The responsor who is everyone wants implant operation was 45.2%, 'do not' is 17.1%. 6. Using period of implant tooth is 'forever' 40.0%. In limited of twenty years' is 23.8%. 7. When everyone select to dental clinic was because of dentist medical technique is 64.3%, dental treatment cost is 15.9%. In conclusion, it is necessary for the dental implant patient to make dental consult and education program. So, try to study for make basic data with analysis recognition of dental implant patients.

• Journal of the Korean Association of Geographic Information Studies
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• v.10 no.2
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• pp.103-111
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• 2007

Since the 1980's the school of Busan metropolitan city has been converted into the other land-use such as high-rise apartment houses, commercial and office buildings. School facilities are available to locate in green area due to not restricted by land use zone. And the location of school facilities were closely related with the school district, distribution of neighborhood unit, safety of students, and so on. The purpose of this study is to understand the location characteristic of school - moved sites in Busan metropolitan city.

• Journal of the Korean Institute of Rural Architecture
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• v.7 no.3
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• pp.19-26
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• 2005

In this study treats 'Rural Village Development Project'. The ministry of Agriculture and Forestry and Korea Agricultural & Rural Infrastructure Corporation are enforcing this from 2004. A purpose of 'Rural Village Development Project' is as follows. Repairs a function of production farms-residing rest tourism generally after connecting a neighborhood village having the same nature in a small scale unit. Too local human resources and material resources is utilized, and develops various types with specialization. As a result, it is to improve with the quality of life of a farmer. This study finds problems to have broken out in Rural Village Development Project. Therefore, recognize whether it is on to be devoted to rural village and rural community inhabitants to solve the problem how. And analyze a policy characteristic of Rural Village Development Project and basic course. Therefore, provide with materials when decides on plan course of Rural Village Development Project through this. As a result, it is a purpose to give help to Rural Village Development Project. The results of study are follows; First, A state inhabitants, professional group, administration understand an agricultural village, and to be able to learn must be prepared first. Second, the enough time that can carry out study is necessary. Third, must present the guidebook which expresses a local characteristic well. Fourth, it is specialist database construction and network formation.

• Journal of Preventive Medicine and Public Health
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• v.54 no.4
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• pp.265-274
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• 2021

Objectives: Given the importance of social determinants of health in promoting the health of slum residents, this study was conducted with the aim of identifying the main dimensions and components of these determinants. Methods: This scoping review study was conducted according to the PRISMA-ScR (Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews). A comprehensive search was performed of PubMed, ProQuest, Scopus, and Web of Science for articles conducted from 2010 to the end of 2019. Studies were selected based on inclusion criteria, with a special focus on studies dealing with the social determinants of physical and mental health or illness. Results: Thirty-three articles were selected to extract information on the social determinants of health. After reviewing the articles, 7 main dimensions (housing, socioeconomic status of the family, nutrition, neighborhood characteristics, social support and social capital, occupational factors, and health behaviors) and 87 components were extracted as social determinants of health among slum dwellers. Conclusions: This framework could be used by planners, managers, and policy-makers when making decisions affecting the health of these settlements' residents due to the common characteristics of slums around the world, especially in developing countries.

• Architectural research
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• v.21 no.2
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• pp.31-39
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• 2019

Inspired by the success of the High-line project in New York, The Seoul Metropolitan Government launched a project to convert an overpass near Seoul station into a pedestrian park. Seoullo 7017 went through instant success after its opening in May 2017; however, there is a continuous controversy over its long-term impact as shown in the exemplary cases like the High-line project. This study aims for quantitative investigation through the comparative analysis between Seoullo 7017 and the High-Line in the perspectives of spatial configuration. Space Syntax was chosen as the analysis method for this research. Integration (3) in Space Syntax is known to have a high correlation with pedestrian volume; thus, by using this method, spatial structure was analyzed by comparing the statistically verified results of changes in the spatial structure of the Highline with those in Seoul. The results indicated that the influence of Seoullo 7017 was less than that of the High-line in terms of spatial configuration. The reason for this difference is spatial configuration between Manhattan and Seoul. The High-line is located in Manhattan which has an urban grid structure, whereas Seoul has non-geometric urban structure, the neighborhood unit in Korea. Also the center of the overpass isn't connected well with its surroundings.