• Journal of the Korean housing association
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• v.16 no.3
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• pp.109-117
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• 2005

The purpose of this study is to suggest a basic data of playground design that can arouse various curiosities and interests of children. The 13play areas 'A' kindergartem's playground that parent, music, play equipment, soccer field, water, sand, tunnel, maze, animal, plant, ground hill, bike road, and inner court were evaluated by 16 teachers and 165 children between the age of 4 and 5. POE data of teachers were collected by questionnaire. And children chose and rated very fun and interesting 5 play areas of 13 ones based on the photos. The results were as following. 1) 13 play areas were generally used evenly with diverse purpose. 2) the environment of the play areas was deemed very appropriate. 3) maze area and play equipment area were recognized as the most favored play areas by children. 4) teachers recommended soccer field, plants, maze, tunnel, music area as the most favorable play areas.

• Proceedings of the Korea Concrete Institute Conference
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• 2000.10a
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• pp.144-149
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• 2000

Porous cement concrete was developed to prevent hydroplaning of airway pavement or to reduce noise emission in highway. In has been introduced in domestic since early 1980' and applied to a pedestrian road or bike way. The concrete, however, has problems such as lack of optimized mix design, low strength and deterioration, etc. The purpose of this study is to manufacture porous cement concrete using blast-furnace slag to enhance mechanical properties. The results of this study are as follows; the compressive strength range is 102∼247kgf/㎠, the tensile strength range is 16∼70kgf/㎠, the bending strength range is 43∼70kgf/㎠, and the coefficient permeability range is 6.79 ×10-2∼1.17∼10-1cm/sec. To develope high-performance porous concrete, further studies are needed on optimum mixture of fineness modulus and admixture.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.04a
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• pp.607-610
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• 2016

최근 자전거 이용인구가 급격하게 증가함에 따라 자전거 교통사고 역시 증가하고 있다. 이에 DB를 통해 이용자에게 알맞은 자전거 도로에 대한 정보를 제공하여 자전거 도로를 활성화하고자 다음과 같은 프로젝트를 진행하게 되었다. 서울시를 중심으로 사용자의 지역, 선호하는 길이, 난이도에 따른 DB를 제공하여 알맞은 자전거 도로를 선택하도록 하였으며, 기업에게는 자전거 이용자의 DB를 제공하여 마케팅에 활용할 수 있도록 하였다.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.9 no.2
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• pp.33-44
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• 2006

The purpose of this study is to establish future directions of environmentally-friendly restoration of Yangjae underground stream and reflect various opinions of inhabitant in the plan and design process. The opinions from the citizens include the economic and environmental suitability of the restoration projects and preference for the future directions of restoration. The citizens are favorable to removing the existing parking lot and want to have jogging course, walking path and bike road in the stream. Different opinions and resulted in preferred facilities and diminishing existing park along the stream depending on the restoration influencing zone. As a result, citizens agree in restoration but they have different opinions about the feasibility of new facilities, streams restoration and central park reduction locally. It is desirable to reflect the opinions of citizens in the process of plan and design of restoration project.

• Journal of the Korea Furniture Society
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• v.20 no.6
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• pp.581-589
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• 2009

Under 'The Design Street' Project, one of the urban environment improvement projects of Seoul, the facilities on the street have been greatly varied in terms of design. In addition, the municipal authority has pushed each district to develop its own identity based on the integrated design of the city. This study was aimed to propose a design which could solve the current problem in street furniture in terms of environmental improvement through an analysis on current street conditions in "Y" District as a part of Seoul Design Street Project. It has attempted to propose 11 street furnitures based on the basic strategy of 'Soft City' which has been promoted by Seoul City in accordance with the Seoul Public Facility Guidelines as 1. Airy Design, 2. Integrated Design, 3. Collaborative Design and 4. Sustainable Design. Among them, for the total design in Seoul six facilities - kiosk, manhole, traffic signal controller, public phone, road sign and waste receptacle were proposed by Seoul City have been accepted. For local differentiation, on the contrary, five items - planter bench, bollard, lifter, bike rack and fence have been newly designed and proposed. Furthermore, it is essential to carry out systematic supervision and continuous management on the detail design and construction of current regional design development projects.

• Journal of Multimedia Information System
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• v.3 no.4
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• pp.119-128
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• 2016

This study aims to suggest a new algorithm for detecting two-wheelers on road that have various shapes according to the viewing angle for vision based intelligent vehicles. This article describes a new approach to two-wheelers detection algorithm riding on people based on modified Histogram of Oriented Gradients (HOG) using correlation coefficient (CC). The CC between two local area variables, in which one is the person riding a bike and other is its background, can represent correlation relation. First, we extract edge vectors using HOG which includes gradient information and differential magnitude as cell based. And then, the value, which is calculated by the CC between the area of each cell and one of two-wheelers, can be extracted as the weighting factor in process for normalizing the modified HOG cell. This paper applied the Adaboost algorithm to make a strong classification from weak classification. In this experiment, we can get the result that the detection rate of the proposed method is higher than that of the traditional method.

• Journal of the Korean GEO-environmental Society
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• v.15 no.12
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• pp.35-42
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• 2014

The efforts to reduce carbon emission have been made in many aspects and in road, the study to develop the construction method which will replace asphalt and cement is also underway. But given the low cost and high performance offered by cement, among many solidification agents, it's difficult to seek the competent alternative. Polymeric material has been used in various ways for its advantages including lightweight and easy process for complex function and generates less carbon emission, and thus it would possibly be efficient if it replaces soil pavement using cement. This study, using three different types of organic polymeric solidification agents with different solidification principle, is intended to identify the difference in strength depending on curing method, natural dry or oven dry. Applicability of organic polymeric solidification agents to walkway and bike lane was investigated and as a result of unconfined strength test, all of them satisfied the minimum strength requirements of bike lane. Furthermore, strength characteristics of soil pavement depending on variation of water content was evaluated to identify the relationship, thereby appropriate curing method using organic polymeric solidification agent is proposed.

• Journal of the Korean Institute of Landscape Architecture
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• v.27 no.5
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• pp.1-11
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• 2000

The aim of this study is to suggest guidelines of bicycle lanes in terms of landscape architecture with special reference to Kyongju. The research is mainly based on landscape satisfaction factors analysis regarding 16 variables and 10 slide photos of bicycles lanes. The 43 students of Landscape Department in Kyungpook National University were selected for the research. The major research findings are as follows; 1. Satisfaction degree of 16 variables are assessed in terms of semantic differential scale. The assess group is generally satisfied with variables concerning bicycle lane environment such as $\ulcorner$inclination of the lane (5.2)$\lrcorner$and $\ulcorner$road pavement conditions (5.1)$\lrcorner$. But the group expresses rather low satisfaction degree on the variables related lanes' surrounding landscape such as $\ulcorner$visual variety (3.9)$\lrcorner$, spacious resting place (3.7)$\lrcorner$ and $\ulcorner$variety of facilities (3.1)$\lrcorner$. 2. The level of satisfaction degree regarding 16 variables and 10 photos shows that the male gives relatively higher satisfaction degree than the female group. But there is no statistical significance between the group regarding satisfaction degree of each variable and photo except 4 variables and 2 photos. 3. The assess group gives the highest satisfaction degree on the$\ulcorner$no. 10 slide (6.5)$\lrcorner$ and the lowest on the $\ulcorner$no. 7 slide (2.7)$\lrcorner$. The two photo shows variables of more than 4 points difference of satisfaction degree, such as $\ulcorner$good looking planting threes (4.8)$\lrcorner$, $\ulcorner$enough shadows (4.8)$\lrcorner$ and $\ulcorner$comfortable atmosphere(4.1)$\lrcorner$. 4. $\ulcorner$Aesthetic and amenity factor$\lrcorner$, $\ulcorner$use condition factors$\lrcorner$, $\ulcorner$ike lane environment factors$\lrcorner$, and $\ulcorner$inclination and open view factors$\lrcorner$are the main four factors influencing landscape satisfaction of bicycle lane. Regression model using factor scores for landscape satisfaction degree of bike lane is S(Satisfaction degree)=4.526+1.099(aesthetic and amenity factor)+0.720(use condition factors)+0.486(bike lane environment factors)+0.048(inclination and open view factors($R^2$=0.811).

• Journal of Digital Convergence
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• v.19 no.7
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• pp.217-226
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• 2021

The use of personal mobility(PM) is increasing because of preading shared mobility, but, it causes risk of accidents and fear to pedestrians because of lack of sound. The purpose of this study is to find out the effects of the alert sound in PM and driving direction on risk perception of pedestrians, awareness on PM driver, and allowance for driving on each road. The 8 videos were produced from a pedestrian perspective, depending on the alert sound type(silent, vess, bell, voice) and direction of driving(front, back). After watching each video, participants completed surveys. There was a non-effect on the driving direction. Regardless of the alert sound type, all of the sounds reduced the risk perception. Also, the awareness of PM drivers and allowance for driving on each road were positive. This study found that PM needed an alert sound for pedestrian safety. We expect the results of the study to help improve awareness of PM and make policies and regulations.

• 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.