• 토지주택연구
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• 제13권4호
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• pp.73-89
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• 2022

코로나19의 확산으로 공원의 역할이 강조되고 있다. 사회적 거리두기를 비롯한 방역지침 하에 사람들은 안전하게 머물 곳으로 공원을 찾고 있다. 이러한 변화에 맞추어 공원은 물리적, 위치적 특성에 따라 팬데믹 적응 방안으로서 연구될 필요가 있다. 본 연구는 접근성과 통행기능을 가지는 선형공원의 잠재력을 주변 토지이용 특성에 따라 분석하고자 하였다. 대상지는 경의선 숲길 공원의 연남동 구간부터 염리동 구간까지로 설정하였으며, 집계구 경계와 토지이용 특성을 기준으로 네 개의 구간으로 나누었다. 총 생활인구 수를 종속변수로, 코로나19를 포함한 외부 활동에 영향을 미치는 요인들을 독립변수로 설정하여 구간별 다중회귀분석을 실시하였다. 분석 결과는 다음과 같다. 첫째, 상권과 선형공원의 상호작용이 다양할수록 팬데믹 영향이 크게 작용하였다. 둘째, 다양한 상업시설이 밀집할수록 계절성보다 단기적 날씨변화에 민감하게 반응하였다. 이에 본 연구는 주변 토지이용 특성에 따라 선형공원의 이용에 차이가 있음을 시사한다. 나아가 선형공원에 도시의 위기를 극복하고 녹지 접근 형평성을 높일 수단으로 잠재력이 있음을 밝힌다.

• 한국지리정보학회지
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• 제15권2호
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• pp.150-160
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• 2012

본 연구의 목적은 경상남도 창원시에 위치한 20개 초등학교 주변 물리적 환경과 보행안전 및 교통사고 위험도와의 상호관련성을 분석하는 것이다. 현장조사는 가로 수준의 객관적, 주관적 보행환경을 평가하기 위해서 실시하였고, GIS 기법은 근린생활권 수준의 토지이용 패턴을 분석하기 위해서 사용하였다. 보행안전 및 교통사고 위험도에 관련된 자료는 18개 초등학교의 5~6학년 6,381명을 대상으로 한 설문조사를 통하여 수집하였다. 상관분석에 따르면, 가로 수준의 보도 위 영구적 장애물, 차량 진 출입구, 조명시설, 교통안전표지, 그리고 근린생활권 수준의 단독주택 및 도로면적율 등은 보행안전 또는 교통사고 위험도와 높은 상관성을 가지는 것으로 분석되었다. 향후 본 연구는 안전한 통학로와 보행친화적인 건강한 커뮤니티를 조성하는데 활용 가능할 것으로 판단된다.

• 한국산학기술학회논문지
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• 제15권4호
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• pp.1963-1970
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• 2014

본 연구는 특별교통수단을 이용하고 있는 장애인들의 만족도와 장애인들의 장애수용과 삶의 질에 어떠한 영향을 미치는지 살펴보기 위한 조사연구이다. 이를 위해 제주특별자치도 교통약자이동지원센터의 차량을 이용하는 장애인을 대상으로 설문조사하였으며, 최종분석에는 총81부가 사용되었다. 수집된 자료는 SPSS 18.0을 이용하여, 기술통계 및 다중회귀분석을 실시하였다. 분석결과, 특별교통수단을 이용하는 이유로 휠체어 리프트 차량이라는 응답이 제일 많았으며, 특별교통수단 만족도의 수준에서도 휠체어와 관련된 안전성이 가장 높았다. 반면 이용절차와 관련된 편리성은 만족도가 가장 낮았다. 특별교통수단 만족도 중 안전성이 높을수록 삶의 질(만족감과 의식주)에 긍정적인 영향을 미치는 것으로 확인되었다. 따라서 장애인의 특별교통수단 만족도를 높이고 장애인의 삶의 질을 향상시키기 위해 이동권 확보를 위한 휠체어 리프트 차량 추가 지원과 안전 운행 및 이용절차의 개선이 필요하다.

• 한국농촌건축학회논문집
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• 제22권3호
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• pp.49-60
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• 2020

The purpose of this study utilizes the service design methodology centered on the lives and experiences of rural residents, who are the main beneficiaries of the service, to derive specific problems and needs, and to propose a service improvement plan suitable for the rural residential environment. The study selected Dosan 2-ri Village, Hongseong-gun, Chungcheongnam-do as the target of the survey, used personas and Customer Journey map of service design method to derive specific core issues and insights from the village residents. By developing this, the final five service directions for 'Air care service', 'Self-driving garbage collection and treatment service', 'Emergency/disaster networking service', 'Contaminant removal service' and 'Mobility share service' were derived and presented according to each key keyword. This study is not just a study to grasp the actual conditions of the rural residential environment, but it focuses on the lives and experiences of rural residents and extracts elements that can respond to changes in the lifestyles and patterns of the residents. It can be used as a basic material for more realistic improvement of rural residential environment and service development research. Most of the existing studies on residential environments and spaces is focused on urban areas, and there is a limit to the use of rural areas in residential areas. Therefore, by making recommendations for improvement of residential environment services suitable for rural areas and by creating residential spaces and environments in rural areas in a comfortable and safe manner, it is thought that it is possible to contribute to improvement of satisfaction in rural areas and improvement of healthy housing welfare as well as to improvement of the quality of life of residents of rural areas.

• 분석과학
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• 제33권1호
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• pp.49-57
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• 2020

Controlling the quality of indoor air is important in order to maintain a healthy life. In this study, we investigated the correlation between the hazardous substance concentration of indoor air and circulation based on different ventilation methods in the apartment, which is one of the representative housing types in Korea. As target substances, we considered the hazardous substances which are generated during the cooking process and radon gas which is originated from building materials. We measured the concentrations of carbon dioxide and fine particles in relation to type of food and ventilation methods in order to determine the change in the concentration levels of hazardous substances which are generated during the cooking process. On the other hand, we measured the concentration of radon gas before and after letting fresh air into a room through windows in order to determine the change in the concentration level of radon gas which is originated from building materials. The results show that turning on the ventilation fan plays a major role in reducing the concentration levels of hazardous substances in the kitchen, and that it is more effective to turn on the ventilation fan during cooking than after cooking to prevent the diffusion of hazardous materials produced by cooking through the indoor air. Also, the results indicate that letting fresh air into a room through windows more than one time a day is necessary to reduce the concentration level of radon gas in the room to safe concentration range.

• 한국실내디자인학회논문집
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• 제26권1호
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• pp.53-62
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• 2017

It is very important for the elderly to maintain their independence and to live safe and comfortable daily lives in order to lead an independent life. The bathroom in the house has the greatest number of fall accidents and has a great influence on the independence of the elderly. Therefore, the purpose of this study is to develop a bathroom design method that improves the independence of the elderly whose physical function is deteriorated through preventing falls. In this study, first of all, we investigated the causes of falling in bathrooms based on the previous studies, and identified the intelligent services that can prevent falls and selected them according to individual needs. Secondly, we investigated the bathroom size of the apartment among the various housing type, analyzed the type of the bathroom, and developed a standard type of the bathroom. Thirdly, we analyzed the design guidelines for the elderly residents in Korea and proposed improvement directions. We also divided the intelligent sanitary appliances and fall-prevention products and proposed the installation method and directions. Therefore, the comprehensive bathroom design standards and proposals proposed in this study will be the basis of bathroom design to prevent falls and improve independence of the elderly, and it will be easy to understand and help the designer in designing. Finally, this study is meaningful in that it provides independence of the elderly through fall prevention and increases the easiness of hygiene action and suggests direction to maintain self-sustaining life of the elderly.

• 한국재난정보학회 논문집
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• 제17권2호
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• pp.226-235
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• 2021

연구목적: 에너지저장시설의 주요 시설물인 Coalescer 시설물을 대상으로 현행 설계기준(KBC2016)에 따라 지진에 대한 위험성평가를 수행하였다. 연구방법: 구조해석은 상용프로그램인 MIDAS-IT의 MIDAS GENw를 사용하였고, 구조물의 해석을 위해 기존 설계 도서를 준용하였으며, 해석에 사용한 하중은 국토교통부의 「건축구조기준 KBC2016」와 미국 연방기준인 「Provisions of the Uniform Building Code」를 따랐다. 연구결과: 본 연구에서는 지진하중을 정적으로 재하하고 특급 구조물의 붕괴방지수준에 대하여 평가함으로써 시설물의 관리자가 간편하게 위험도를 인지하고 평가할 수 있도록 고려하였으며, 본 해석결과를 활용하여 향후 시설물의 위험관리에 적용할 수 있도록 지진해석을 수행하였다. 결론: 현재 설계기준인 KBC2016에 의해 Coalescer 시설을 해석한 결과, 주요 지지부재의 stress ratio는 최대 4.7% 정도로 나타났다. 따라서 Coalescer를 지지하는 부재는 국내에 발생할 수 있는 재현주기 2400년 수준의 지진에 대하여 안전한 것으로 해석되었다.

• Structural Engineering and Mechanics
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• 제90권1호
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• pp.19-26
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• 2024

In recent years, an increasing number of experimental studies have shown that the practical application of mature active control systems requires consideration of robustness criteria in the design process, including the reduction of tracking errors, operational resistance to external disturbances, and measurement noise, as well as robustness and stability. Good uncertainty prediction is thus proposed to solve problems caused by poor parameter selection and to remove the effects of dynamic coupling between degrees of freedom (DOF) in nonlinear systems. To overcome the stability problem, this study develops an advanced adaptive predictive fuzzy controller, which not only solves the programming problem of determining system stability but also uses the law of linear matrix inequality (LMI) to modify the fuzzy problem. The following parameters are used to manipulate the fuzzy controller of the robotic system to improve its control performance. The simulations for system uncertainty in the controller design emphasized the use of acceleration feedback for practical reasons. The simulation results also show that the proposed H∞ controller has excellent performance and reliability, and the effectiveness of the LMI-based method is also recognized. Therefore, this dynamic control method is suitable for seismic protection of civil buildings. The objectives of this document are access to adequate, safe, and affordable housing and basic services, promotion of inclusive and sustainable urbanization, implementation of sustainable disaster-resilient construction, sustainable planning, and sustainable management of human settlements. Simulation results of linear and non-linear structures demonstrate the ability of this method to identify structures and their changes due to damage. Therefore, with the continuous development of artificial intelligence and fuzzy theory, it seems that this goal will be achieved in the near future.

• Smart Structures and Systems
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• 제33권4호
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• pp.291-300
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• 2024

Uncertainty of the model, system delay and drive dynamics can be considered as normal uncertainties, and the main source of uncertainty in the seismic control system is related to the nature of the simulated seismic error. In this case, optimizing the management strategy for one particular seismic record will not yield the best results for another. In this article, we propose a framework for online management of active structural management systems with seismic uncertainty. For this purpose, the concept of reinforcement learning is used for online optimization of active crowd management software. The controller consists of a differential controller, an unplanned gain ratio, the gain of which is enhanced using an online reinforcement learning algorithm. In addition, the proposed controller includes a dynamic status forecaster to solve the delay problem. To evaluate the performance of the proposed controllers, thousands of ground motion data sets were processed and grouped according to their spectrum using fuzzy clustering techniques with spatial hazard estimation. Finally, the controller is implemented in a laboratory scale configuration and its operation is simulated on a vibration table using cluster location and some actual seismic data. The test results show that the proposed controller effectively withstands strong seismic interference with delay. The goals of this paper are towards access to adequate, safe and affordable housing and basic services, promotion of inclusive and sustainable urbanization and participation, implementation of sustainable and disaster-resilient buildings, sustainable human settlement planning and manage. Simulation results is believed to achieved in the near future by the ongoing development of AI and control theory.

• Smart Structures and Systems
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• 제33권5호
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• pp.365-374
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• 2024

This paper adopts a new approach in which nonlinear vibrations can be controlled using fuzzy controllers by optimal grey evolutionary algorithm. If the fuzzy controller cannot stabilize the systems, then the high frequency is injected into the system to assist the controller, and the system is asymptotically stabilized by adjusting the parameters. This paper uses the GM (grey model) and the neural network prediction model. The structure of the neural network is improved from a single factor, and multiple data inputs are extended to various factors and numerous data inputs. The improved model expands the applicable range of uncontrolled elements and improves the accuracy of controlled prediction, using the model that has been trained and stabilized by multiple learning. The simulation results show that the improved gray neural network model has higher prediction accuracy and reliability than the traditional GM model, improving controlled management and pre-control ability. In the combined prediction, the time series parameters and the predicted values obtained from the GM (1,1) (Grey Model of first order and one variable) are simultaneously used as the input terms of the neural network, considering the influence of the non-equal spacing of the data, which makes the results of the combined gray neural network model more rationalized. By adjusting the model structure and system parameters to simulate and analyze the controlled elements, the corresponding risk change trend graphs and prediction numerical calculation results are obtained, which also realize the effective prediction of controlled elements. According to the controlled warning principle and objective, the fuzzy evaluation method establishes the corresponding early warning response method. The goals of this paper are towards access to adequate, safe and affordable housing and basic services, promotion of inclusive and sustainable urbanization and participation, implementation of sustainable and disaster-resilient buildings, sustainable human settlement planning and manage.