• Title/Summary/Keyword: Walking Safety

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A study on the deduction of the barrier factors in the forest trail for the disabled using wheelchairs (휠체어 사용자를 고려한 숲길의 장애요소 도출에 관한 연구)

  • Kweon, Hyeong-Keun;Lee, Joon-Woo;Park, Bum-Jin;Sin, Won-Sop;Yeom, In-Hwan
    • Korean Journal of Agricultural Science
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    • v.38 no.2
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    • pp.235-241
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    • 2011
  • Recently, as people have become more interested in health issues, their demand on forest trails for bush walking exercise has increased. The purpose of the study is to select barrier factors into forest trail for disabled using wheelchairs. As a result this, it has selected 31 barrier factors through the Delphi method. Of all the these factors, the information board of forest trails, showing the location of the trails, has indicated the highest score of importance at 4.50. Next, securing hiker' walking safety space has indicated an importance level of 4.44; both the slope of forest trails and the height of obstacles have indicated an importance level of 4.38; and the effective width of forest trails has indicated the highest score of importance level of 4.33. From these indicated levels of importance, the respondents of the Delphi method consider the safety of users of forest trail' as the most important factor while the physically disables are hiking. That is why these factors have resulted in acquiring relatively higher values.

Development of a Real-time Safest Evacuation Route using Internet of Things and Reinforcement Learning in Case of Fire in a Building (건물 내 화재 발생 시 사물 인터넷과 강화 학습을 활용한 실시간 안전 대피 경로 방안 개발)

  • Ahn, Yusun;Choi, Haneul
    • Journal of the Korean Society of Safety
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    • v.37 no.2
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    • pp.97-105
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    • 2022
  • Human casualties from fires are increasing worldwide. The majority of human deaths occur during the evacuation process, as occupants panic and are unaware of the location of the fire and evacuation routes. Using an Internet of Things (IoT) sensor and reinforcement learning, we propose a method to find the safest evacuation route by considering the fire location, flame speed, occupant position, and walking conditions. The first step is detecting the fire with IoT-based devices. The second step is identifying the occupant's position via a beacon connected to the occupant's mobile phone. In the third step, the collected information, flame speed, and walking conditions are input into the reinforcement learning model to derive the optimal evacuation route. This study makes it possible to provide the safest evacuation route for individual occupants in real time. This study is expected to reduce human casualties caused by fires.

A Study on the Comparison of Landscape Lighting by Using Simulation Approach for Users' Safety in Urban Park (도시공원 야간 이용자 안전을 위한 경관 조명 시뮬레이션 비교 연구)

  • Lee, Jong-Sung
    • Journal of the Korea Safety Management & Science
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    • v.12 no.1
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    • pp.43-50
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    • 2010
  • The purpose of this study is to propose a simulation approach which compares lighting quality of each luminaire type for small urban park users' safety. For improving illumination quality, lighting intensity distribution of a luminaire is one of the important factors and it is also important to set the luminaire to a proper position. To achieve the best plan for illumination, it is most important to communicate the plan with designers of park and professional engineers in depth and the communication continues from the beginning of the plan.

Study on the Safety Evacuation of University Dormitory Occupants Based on Pathfinder

  • Zechen Zhang;Hasung Kong
    • International journal of advanced smart convergence
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    • v.13 no.3
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    • pp.328-334
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    • 2024
  • This study uses Pathfinder software to simulate and analyze the safe evacuation of university dormitory occupants. Fire safety issues in densely populated dormitory buildings are gaining increasing attention, and improving emergency evacuation efficiency is crucial for reducing the harm caused by fire incidents. The study focuses on a student dormitory building in a university, simulating different evacuation scenarios and analyzing the impact of factors such as evacuation routes, personnel distribution, exit width, and stair width on evacuation time. Based on the actual dormitory conditions, parameters such as gender ratio, height range, shoulder width, and walking speed of the occupants were set, and evacuation times in various scenarios were compared.The simulation results show that proper planning of evacuation routes and increasing stair width significantly reduced evacuation times. The study recommends that universities establish systematic emergency response plans, conduct regular evacuation drills, optimize student dormitory layouts, and consider increasing stair width in dormitory building designs to improve evacuation efficiency and safety.

Design and Implementation of Smart Cane for Visually Impaired People (시각 장애인을 위한 스마트케인 설계)

  • Ahn, Jeonghwan;Lee, Young-Doo;Koo, Insoo
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.18 no.3
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    • pp.167-175
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    • 2018
  • Despite the rapid development of IT technology, people with visual impairments still use simple forms of walking sticks and need more advanced walking aids. Smart Cane, which is developed based on Internet service and sensor, can provide high safety and convenience compared to existing sticks for visually impaired people by conveying peripheral information and walking situation to these visually impaired people through voice and vibration. In this paper, we propose and implement SmartKane to overcome lack of miniaturization, user friendly form, and sensing sensitivity, which have been pointed out as a problem of existing SmartKane.

Postural Control Strategies on Smart Phone use during Gait in Over 50-year-old Adults (50세 이상 성인의 보행 시 스마트폰 사용에 따른 자세 조절 전략)

  • Yu, Yeon Joo;Lee, Ki Kwang;Lee, Jung Ho;Kim, Suk Bum
    • Korean Journal of Applied Biomechanics
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    • v.29 no.2
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    • pp.71-77
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    • 2019
  • Objective: The aim of this study was to investigate postural control strategies on smart phone use during gait in over 50-year-old adults. Method: 8 elderly subjects (age: $55.5{\pm}3.29yrs$, height: $159.75{\pm}4.20cm$, weight: $62.87{\pm}8.44kg$) and 10 young subjects (age: $23.8{\pm}3.19yrs$, height: $158.8{\pm}5.97cm$, weight: $53.6{\pm}5.6kg$) participated in the study. They walked at a comfortable pace in a gaitway of ~8 m while: 1) reading text on a smart phone, 2) typing text on a smart phone, or 3) walking without the use of a phone. Gait parameters and kinematic data were evaluated using a three-dimensional movement analysis system. Results: The participants read or wrote text messages they walked with: slower speed; lesser stride length and step width; greater flexion range of motion of the head; more flexion of the thorax in comparison with normal walking. Conclusion: Texting or reading message on a smart phone while walking may pose an additional risk to pedestrians' safety.

A Study on the Perception of Personal Mobility Vehicle for the Improvement of Pedestrian Environment for the Disabled

  • Lee, Joohyung;Lee, Kyooil
    • Physical Therapy Rehabilitation Science
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    • v.10 no.2
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    • pp.124-133
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    • 2021
  • Objective: In order to secure the right to walk for the weak, such as the disabled, this study aims to suggest ways to improve the pedestrian environment by identifying factors that cause obstacles to walking. Design: Data Analysis and Perception Survey. Methods: The questionnaire was conducted separately between users of personal mobility vehicle and non-users. A total of 207 effective questionnaires were collected, and the analysis analyzed the perception of personal mobility vehicle by conducting frequency analysis using SAS 9.4. The survey focused on basic information on respondents, walking conditions, understanding of personal mobility vehicle, awareness of pedestrian space passage and parking, and awareness of the possibility of securing pedestrian rights due to new regulations. Results: First, when moving a pedestrian path by personal mobility vehicle, it shall be limited to less than the walking speed of pedestrians. Second, the parking location of the personal mobility vehicle is located at the boundary of the pedestrian road and the lane. Third, pay a fair price to park in a pedestrian space. Conclusions: It is necessary to improve the system to strengthen the contents of education to take into account the safety of pedestrians in education on how to use personal mobility vehicle.

Effects of Smartphone Usage Patterns on Human Factors of Pedestrian Safety: Focused on Users in Their 20's and 30's (스마트폰 이용행태가 보행안전도의 인적요인에 미치는 영향: 20~30대 사용자들을 중심으로)

  • You, Seung-Hee;Kwon, Chang-Hee
    • Journal of Digital Convergence
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    • v.15 no.9
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    • pp.79-85
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    • 2017
  • The purpose of this study was to investigate utilization behaviors of smartphones while walking that are increasing recently and to examine the effects of smartphone usage patterns on human factors of pedestrian safety. In order to understand the motives and actual conditions of pedestrians' use of smart phones, a online questionnaire survey was conducted on people in their 20~30s who use smartphones. As a result, 98.6% of the respondents had experience using smartphones while walking. After performing the survey by extracting 17 uses the synchronization elements in the prior studies was extracted with two factors from the factor analysis. Particularly, respondents whose motivation to use smartphones was 'pandemic' were analyzed to have an influence on the risk of accident due to use of smartphones among human factors of pedestrian safety.

The ecological factors affecting walking in korean adult workers (한국 성인 직장인의 걷기에 영향을 미치는 생태학적 요인)

  • Kim, Myung-gwan;Suh, Soon-Rim
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.5
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    • pp.68-78
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    • 2017
  • The purpose of this study was to identify the influence of the individual-level and community-level factors in the ecological model on walking and to provide the basic data for a strategy that can increase walking for health promotion of adult workers. By combining the primary data of community health survey (CHS) (2011-2013) with the Korea national statistics annual book (2011-2013), the regional level variables were extracted from 253 municipal districts and the convergent big data with the hierarchical structure was produced. As a result, the increase in budget expenditure for public order and safety in social and cultural environment factors, the increase in budget expenditure for national and community land development in the leisure environment factors, and the number of buses in the transportation environment were increased by walking. In conclusion, walking was increased by the development of a community environment and bus transportation besides individual characteristics and behavior. Therefore, improving environment and public transportation will increase physical activity, such as walking, which will increase the health expectancy in community citizen workers.

Design of Assistive Wearable System for Walking (보행 보조 웨어러블 시스템 설계)

  • Choi, Seong-Dae;Lee, Sang-Hun
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.18 no.12
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    • pp.111-116
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    • 2019
  • With the recent acceleration of industrial technologies and active research, wearable robot technologies have been applied to various fields. To study the utility of wearable robots, basic research on kinetic mechanisms of the human body, bio-signal analysis, and system control are essential. In this study, we investigated the basic structure of a wearable system and the operating principles of a driving mechanism. The control system and supporting structure, which comprise the driving mechanism, were designed and manufactured. Motion and load analyses were performed simultaneously for the design of the kinematic drive, and the driving mechanism was constructed by analyzing walking motion. The operating conditions of the cylinder were verified by stride via driving experiments. Further, the accuracy and responsiveness of the system were confirmed by comparison with actual motion, and the system safety was validated by applying loads.