• Title/Summary/Keyword: On-site Transportation

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Selection method of public transportation vulnerable area using GIS buffering analysis (GIS Buffering기법을 이용한 대중교통취약지구 선정방법)

  • Kim, Yeon-Woong;Chang, Sung-Bong;Jang, Gwang-Woo;Park, Min-Kyu
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.1739-1742
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    • 2011
  • Public transportation network in our country is concentrated and advanced focusing on urban area in order to secure economic feasibility. As a result, as dependence on private vehicles is relatively getting higher in public transportation vulnerable area, traffic problem occurs since the average running speed in urban area is 22.5km/h. This paper has an objective to suggest an improvement plan by selecting public transportation vulnerable area, and defining according to urban structure, formation and function, and understand traffic characteristics and draw problems. As a method selecting public transportation vulnerable area, an area with high division rate of vehicle was selected as a primary proposed site by calculating division rate of means of public transportation according to area. Final proposed site was selected by using GIS Buffering technique aiming at selected proposed site, and selecting non-benefit area 500m outside, which is the road limit distance from each subway and bus station. Lastly, the degree of improvement effect was studied by constructing imaginary public transportation network aiming at final proposed site and comparing to the amount of change in division rate of means of transportation.

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A Study on the Odor Compounds Emitted using Odor Contribution Analysis - Focus on the Ochang Scientific Industrial Complex Area - (악취기여도평가를 이용한 악취원인물질 연구 - 오창과학산업단지를 중심으로 -)

  • Jung, Ji-Sun;Kim, Duk-Chul;Lee, Han-Chul;Yeon, Seoung-Won;Yeon, Ik-Jun
    • Journal of Environmental Science International
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    • v.25 no.9
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    • pp.1329-1339
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    • 2016
  • The purpose of this study was to obtain the basic data needed to identify the impact of the odor, emitted from the Ochang Scientific Industrial Complex area on the surrounding residential areas by measuring and confirming odor compounds. The analysis showed that complex odors were diluted from around 4 to 1. The offensive odor measurement results showed that among the sites, site 1 was highest in sulfur compounds, site 2 was highest in toluene, site 3 was highest in trimethylamine, and site 4 was highest in buthylaldehyde. It cannot be decided to be odor-causing compounds for higher odor concentration because each odor substance has a different odor threshold value. According to the odor contribution analysis for each site, site 1, site 2, and site 4 contained high buthylaldehyde concentrations, and site 3 had a high level of trimethylamine. It could be determined that highly evaluated substances were main causes to result in substance for each site.

In-situ Production Effect Analysis of Precast Concrete Elements (PC 부재의 현장 생산효과 분석)

  • Lee, Dong-Joo;Oh, Jin-Hyuck;Kim, Sun-Kuk
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.11a
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    • pp.52-53
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    • 2021
  • PC (Precast Concrete) method was preferred for reasons such as shortening of construction period, cost reduction, and quality. However, in the case of factory production, precast concrete has a problem in that transportation conditions in the transportation process, damage during transportation, overhead and profit of the factory are required. If work and PC members are produced on site, transportation and installation costs can be reduced. However, research on field production has not been conducted. Therefore, based on the on-site production plan without PC, the cost and quality of factory production and on-site production are compared and analyzed.

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Basic Study on the Assembly Process Design of Curtain-wall System for Minimization of Carbon Emission

  • Yi, June-Seong
    • Journal of the Korea Institute of Building Construction
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    • v.12 no.6
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    • pp.648-663
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    • 2012
  • With recent attempts to improve quality and productivity, the prefabrication manufacturing system has been occupying an increasing share of the construction area. To minimize site work, material is more frequently being produced and partially assembled at a plant, and then installed at a site. For this reason, the production process is being divided and the materials are being delivered to the site after passing through multiple plants. With these changes in the production process, the materials delivery plan is becoming an important management point. In particular, as road transportation using trucks has a 71 percent share of the domestic transportation market, selecting the proper transportation path is important when delivering materials and equipment to a site. But the management system at the project design phase to calculate the delivery cost by considering the production process of the pre-fab material and the $CO_2$ emission at the material delivery phase is currently lacking. This study suggests a process design model for assembly production of the pre-fab material and transportation logistics based on carbon emission. The suggested model can be helpful to optimize the location of the intermediate plant. It is expected to be utilized as a basic model at the project plan and design phase when subcontractors make decisions on items such as materials procurement, selecting the production method, and choosing the location of the assembly plant.

Multi-product, multi-site production and transportation scheduling problem (다품종 복수공장 생산에서의 생산분배 및 수송계획 문제연구)

  • 장병만
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1993.04a
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    • pp.36-45
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    • 1993
  • This paper presents a model and a heuristic procedure to design production planning and transportation scheduling systems of critical items, components and products on the basis of material requirement planning concept and transportation planning model. These systems are stemmed from a multi-site multi-product production company in a international economic zone. An example is provided to validate the heuristic procedure developed.

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Vision-based full-field panorama generation by UAV using GPS data and feature points filtering

  • Guo, Yapeng;Xu, Yang;Niu, Haowei;Li, Zhonglong;E., Yuhui;Jiao, Xinghua;Li, Shunlong
    • Smart Structures and Systems
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    • v.25 no.5
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    • pp.631-641
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    • 2020
  • To meet the urgent requirements of safety surveillance from civil engineering management authorities, this study proposes a refined and efficient approach to generate full-field high-resolution panorama of construction sites using camera-amounted UAV (Unmanned Aerial Vehicle). GPS (Global Position System) information extraction for pre-registration, feature points filtering for efficient registration and optimal seaming line seeking for fusion are performed in sequence to form the full-field panorama generation framework. Advantages of the proposed method are as follows. First, GPS information can sort images for pre-registration, avoiding inefficient repeated pairwise calculations and matching. Second, the feature points are filtered according to the characteristics of the construction site images to reduce the amount of calculation. The proposed framework is validated on a road construction site and results demonstrate that it can generate an accurate and high-quality full-site panorama for the safety supervision in a much efficient manner.

Productivity Analysis of the Site Installation Stage of Laminated Modular Multi-Family Housing (적층식 모듈러 공동주택 현장설치 단계의 생산성 분석)

  • Park, Moon-Sun;Kim, Seok
    • Journal of the Korean Society of Industry Convergence
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    • v.22 no.5
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    • pp.519-527
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    • 2019
  • This study was conducted to present useful information on the utilization and productivity analysis of laminated modular multi-family housing. To this end, the process of site installation was investigated and analyzed through a prior study, and the monitoring survey was conducted through the site installation case of an stacked multi-family housing. Based on the above, the results of productivity analysis using the web-cyclone technique were also presented. However, the site installation process has limitations on generalisation because the process is not the same for each construction company, and also limits that require verification through application in the actual site of the web-cyclone model presented in this study.

Automatic indoor progress monitoring using BIM and computer vision

  • Deng, Yichuan;Hong, Hao;Luo, Han;Deng, Hui
    • International conference on construction engineering and project management
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    • 2017.10a
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    • pp.252-259
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    • 2017
  • Nowadays, the existing manual method for recording actual progress of the construction site has some drawbacks, such as great reliance on the experience of professional engineers, work-intensive, time consuming and error prone. A method integrating computer vision and BIM(Building Information Modeling) is presented for indoor automatic progress monitoring. The developed method can accurately calculate the engineering quantity of target component in the time-lapse images. Firstly, sample images of on-site target are collected for training the classifier. After the construction images are identified by edge detection and classifier, a voting algorithm based on mathematical geometry and vector operation will divide the target contour. Then, according to the camera calibration principle, the image pixel coordinates are conversed into the real world Coordinate and the real coordinates would be corrected with the help of the geometric information in BIM model. Finally, the actual engineering quantity is calculated.

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