• Title/Summary/Keyword: bike

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LBS/GPS based Bicycle Safety Application with Arduino (아두이노를 이용한 위치정보 기반 안전한 자전거 애플리케이션)

  • Kim, Dong-Gun;Lee, Ho-Se;Kim, So-Young;Kim, Tae-Woo;Lee, Hyung-Woo
    • Journal of Internet of Things and Convergence
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    • v.2 no.1
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    • pp.7-15
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    • 2016
  • Bicycle users were surpassed a million recently as bicycle riding will be a key element of daily life. As users increase, we can expect that the user is more exposed to the risk of an unexpected accident. Therefore, we need to establish several preventive measures for a safe riding environment. In this paper, we developed mobile application by using the acquired GPS-based location information that provide safety services for the bike riding as a LBS service. In detail, we have been able to provide a bicycle safety navigation service by using the bluetooth transmission and reception method between Android and Arduino-based devices. As a future work, the safety could be improved if we expand various forms of Arduino sensors. As a result, a service developed in this study will be able to converge ahead to connect into several personalized mobile IoT services.

Basic Research for Sustainable Development of the Compact City -Focusing on the Characteristics Analysis for City/ Society/Residence of Europe/USA/Japan- (지속가능한 콤팩트도시 개발을 위한 기초 연구 -유럽, 미국, 일본의 도시, 사회, 거주 특징분석을 중심으로-)

  • Baek, Seung-Kwan
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.8
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    • pp.595-604
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    • 2016
  • This study discusses the sustainable development of the compact city. The problems of urban sprawl have long been recognized. Urban sprawl results from the confluence of several factors: the lure of cheap open land outside the city, advances in transportation, the ready availability of capital to buy property, the increase in the number of real estate developers and the mass production of housing. The term compact city has the opposite connotation to urban sprawl. Compact cities provide a more energy efficient and less polluting environment, because dwellers within them live closer to shops and work and can easily walk, bike or take public transport. In other words, the compact city has the objective of facilitating the integration of the different functions through the intensive development of various facilities, such as residences, commerce, businesses and of improving the efficiency of urban energy usage by decreasing the volume of traffic.

Effects of Seasonal and Membership Characteristics on Public Bicycle Traffic : Focusing on the Seoul Bike (계절 및 회원 특성이 공공자전거 통행에 미치는 영향분석 : 서울시 따릉이를 대상으로)

  • Jang, Jae min;Lee, Soong bong;Lee, Young-Inn;Lee, Mu Young
    • International Journal of Highway Engineering
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    • v.20 no.4
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    • pp.47-58
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    • 2018
  • PURPOSES : Seoul introduced public bicycles to reduce environmental pollution and create a healthy society. Because the use of bicycles is highly weather dependent, and bicycles are rented by the people, member characteristics and seasonal influences should be considered. This study analyzed bicycle traffic characteristics considering seasonal and member characteristics and highlighted some implications. METHODS : The Yeouido and Sangam districts, which have multiple business districts, were taken as the areas of interest. In order to reflect seasonal and membership characteristics, the traffic volume, time of use, and characteristics of each zone were categorized by season (spring, summer, autumn, winter) and membership type (season, daily, group). In addition, we analyzed the pattern of traffic volume and usage time according to the traffic purpose after separating rental locations into residential, business, subway, and park, reflecting the land characteristics. RESULTS : The results revealed that seasonal characteristics were high for bicycle traffic, time of use, and occupancy rate for park locations in spring and autumn. In terms of membership characteristics, group and daily users appeared as major visitors for park locations, and the trends of commuter pass users showed that bicycle use meets the purpose of introducing public bicycles. CONCLUSIONS : Traffic characteristics differed according to seasonal and membership characteristics. It is necessary to involve and extend the users of the commuter pass. Situations in which commuter pass users cannot function as a group or in which daily users monopolize bicycles (especially near parks, near subway stations, etc.) must be avoided.

The Study of Three-wheel with Active Tilt Control(ATC) Systems in Design - Concentrated on Three Wheel Motor Bike (틸팅시스템을 적용한 삼륜차량 디자인 연구 - 삼륜 스쿠터를 중심으로 -)

  • 곽용민;안철홍
    • Archives of design research
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    • v.16 no.1
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    • pp.15-24
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    • 2003
  • In the latest date, vehicles are offered to the drivers, not only the skill for shifting but the pleasure for driving vehicles that are existing today can be a social problem because the amount of vehicles that are increasing give difficulty for the traffic facilities and parking expansion. these day 80% of four wheeled vehicle carriers single or double person the reducing car scale is an important thing about the financial good use resources of energy and the storage of environment. A solution for these problem is a new general idea vehicle development for one or two person to ride. For the sake of these reasons, first, the information is collected and analyzed about existing foreign countries production. Car external design is intended by mathematical modeling, simulation and model testing about frame system of new concept specially we would like to show three wheeled vehicle that has active tilt control(ATC) system. This car tilts actively by the center rotation wheel and frame when the vehicle turns.

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Meaning of 'Labor' and Aesthetic in Dardenne Brothers' Films (다르덴 형제 영화에서 '노동'의 의미와 형식미학)

  • Ahn, Soong-Beum
    • The Journal of the Korea Contents Association
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    • v.12 no.9
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    • pp.93-105
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    • 2012
  • Dardenne brothers' films deals with minorities' issues who are shoved out to periphery of society, and especially takes interest in value-deprived human life in labor market of today. This study examines such social awareness of Dardenne brothers targeting their latest works awarded in Cannes Film Festival, , , , , . And analysis is attempted about Dardenne brothers' unique formal aesthetical style that exactly captures such social awareness. In Dardenne brothers' films a person shows up who faces abject matter of living. Their agony is closely connected to unemployment, and shows images of irresistible anxiety and alienation. Dardenne brothers' images are not only simple platform with contents embodied, but designed form showing essential thematic consciousness. Location and gaze, motion of camera capturing a character makes us to reflect the situation a character is facing in the world. There are almost no regard about plots, no dramatic devices, superficial and even straightforward, but Dardenne brothers' films have such independent formal aesthetic, which makes able to give endless tension.

A Design of the Cat's Eye System with Low Power Consumption Using Solar Energy (태양광을 이용한 저전력의 LED 표지병 설계)

  • Kim, Keun-Sik;Kim, Jong-Hoon
    • Journal of Digital Convergence
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    • v.14 no.1
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    • pp.181-187
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    • 2016
  • Typical Retro-reflectors installed on road have problems such as limiting a driver's visibility at night when it is foggy or rainy. On the other hand, LED illuminated studs, called cat's eye system, extends a driver's visibility under these conditions. In this paper, we present a design of the LED cat's eye system using solar energy that can sustain vehicles with about 30-ton weight and is compliant with the IP68 code for water proof as IEC standard 60529. In addition, we propose a scheme of designing a LED driving circuit consuming low power to take into accounts cold weather or rainy season with limited sunlight. This LED cat's eye studs is currently installed and used on expressway and bike route nationally as well as overseas.

Building bicycle management system using Blockchain (블록체인을 활용한 자전거 관리 시스템 구축)

  • An, Kyu-hwang;Seo, Hwajeong
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.22 no.8
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    • pp.1139-1145
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    • 2018
  • According to the prosecutors' office's statistics for 2014, 53% of a bicycle users have experienced theft. The reason for the high rate of bicycle stolen in Korea is that there is no bicycle management system. This is because they do not use bicycle numbers to manage bikes like cars do. Most people do not know if they have a VIN(Vehicle Identification Number) on their bike. If the buyer registers the bicycle in the bicycle management blockchain system, anyone can view the information registered in the chain, so that if the bicycle number is filled in, the bicycle can be identified. In addition, when an accident occurs, blockchain will record what kind of equipment it is replacing, like an automobile, to manage all the information about the bicycle. In this way, consumers can inquire whether they have a history of accident when they make a second-hand transaction. In this paper, we propose a method to construct bicycle management system using bicycle VIN.

On the Environmental Education in Yamaguchi Prefecture (환경교육, 미래의 생존과 번영을 위한 긴급 테마 - 일본의 야마구치현을 중심으로-)

  • 문창룡
    • Proceedings of the Korean Society for Environmental Edudation Conference
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    • 2003.07a
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    • pp.50-56
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    • 2003
  • #1 The Education from our Environment, The urgent subject for survival and prosperity in the future. - Around Yamaguchi in japan. - #2 Days of tour : January, 15, 2003 - January, 28, 2003 * Comprehensive classes involved in ecosystems; Ryojo Elementary school, Guina Elementary school, Dabusei Junior High School, Ube Technical High School, Yashiro Elementary School, Toyota Nishi Junior High School, Seii Elementary School, Yamaguchi Prefectural School for the Mentally Impaired, Yamaguchi Institute for Educational Research and In-service Training, Kirara Beach Nature Watching Park #3 Characteristics of Yamaguchi Prefectural Environmental Education - Constant effort by concerned authorities and dedicated teachers - Cooperation of schools with community - Application of the comprehensive classes - Student-centered education through experiences - Acquirement of basic knowledge on environment in their daily lives - The harmony with the ability to survive' #4 Characteristics of the environmental education in each school $\square$ Ryojo Elementary School \longrightarrow Breeding the fireflies' larvae and releasing them into nature $\square$ Kuina Elementary School \longrightarrow Keeping the rivers clean $\square$ Yashiro Elementary School \longrightarrow Learning through exploring ‘Akiyoshido Cave’ $\square$ Seii Elementary School \longrightarrow Tree-planting campaign continued for 30 years $\square$ Tabuse Junior High School \longrightarrow Making their village good to live in $\square$ Toyota-Nishi Junior High School \longrightarrow Learning through working on the farm and in the forests $\square$ Ube Technical High School \longrightarrow Purifying the pond by the ‘biotope’ #5 Focus on Yashiro Elementary School \longrightarrow Children Guide Activity (25 hours annually) * To love their native place and tourists' attraction, Akiyoshidal * To introduce a variety of local events; - To make a fire in the mountains - To explore the cave - To hold a festival for tourists - To have a family-jointed bike riding #6 $\square$ conclusion - Gradual extension of environmental education * individuals \longrightarrow school \longrightarrow community - Finding the environmental problems around themselves and relating them with features of their community < Tips for the environmental education in the future > - Need for encouragement of more lively discussion in class - Expansive application of comprehensive classes to various areas

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Green Infrastructure Types and Effects for Climate Change (기후변화 대응을 위한 녹색기반시설의 유형과 효과)

  • Kim, Seung Hyun
    • Journal of Climate Change Research
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    • v.2 no.3
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    • pp.191-201
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    • 2011
  • This study investigates how green infrastructure, including natural and open space such as forests, rivers, parks, and streets, could effectively counteract climate change in terms of mitigation and adaption, respectively. As a result, green infrastructure, such as forests, parks, vegetable gardens, roof gardens, pedestrian walkways, bike lanes, etc, could effectively mitigate climate change: 1) Carbon storage and sequestration; 2) Fossil fuel substitution; 3) Material substitution; 4) Food production 5) Reducing the need to travel by car. Secondly, green infrastructure, such as rivers, tree-lined streets, farmland, wetlands, dunes, wind ways, etc, could adapt to climate change: 1) Managing high temperatures; 2) Managing water supply; 3) Managing ravine flooding; 4) Managing costal flooding; 5) Managing surface water; 6) Reducing soil erosion; 7) Helping other species to adapt.

A Convergence Study through Durability Analysis due to the Configuration of Automotive Frame Butted (자전거 프레임 버티드 형상에 따른 내구성 해석을 통한 융합연구)

  • Choi, Gye-Gwang;Cho, Jae-Ung
    • Journal of the Korea Convergence Society
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    • v.9 no.11
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    • pp.271-276
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    • 2018
  • When the driver riding in a bicycle goes on board, the load of driver is shown differently according to the position loaded on the frame of bicycle. The load is applied most at the joint of bike frame and the load at the mid-part of frame is applied least than the other parts. So, the weight of frame is decreased as the part not applied with a lot of load is manufactured into the thin thickness. As the part applied with high load is manufactured into the thick thickness, it can be endured through this load. The configurations of general frame, double butted and triple butted were modelled by using CATIA program. The durabilities of each model due to the load of passenger were investigated by carrying the structural and fatigue analyses. As this study result investigated with the analysis program of ANSYS, the deformation of general frame happened most and that of triple butted became least. These simulation analysis data are intended to be used to design the actual bicycle frame in the most efficient way at design and manufacture.