• Title/Summary/Keyword: Industry site

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A Study on the Site Calibration of Network RTK Surveying (네트워크 RTK 측량의 사이트 캘리브레이션 방안에 관한 연구)

  • Choi, Han Jun;Lee, Byoungkil;Yeon, Sang Ho
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.31 no.1
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    • pp.99-107
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    • 2013
  • With the expansion of the development and use of surveying equipment recently, by the establishment of infrastructure for network RTK surveying of the NGII, network RTK surveying has been widely used in surveying industry. Currently, in public surveying regulations, site calibration with minimum 5 evenly spaced bench marks is needed for using network RTK surveying results as leveling. But the range between and the number of bench marks for site calibration can be varied according to the geoid undulation. In this study, in order to verify this, Incheon area having regular geoid undulation and Taebaek area having irregular geoid undulation are selected as study area and network RTK surveying have been done. Then the accuracy of site calibration by range between and the number of bench marks have been compared. As a result of this study, in order to meet a tolerance of vertical precision (0.1m) that has been set in public surveying regulations, there is a necessity for improving the regulations so that the range and number of bench marks, to be used for site calibration of network RTK surveying, can be applied complementarily.

Quality Evaluation for the Usability of Multimedia Web Sites (멀티미디어 웹 사이트 사용성 품질 평가)

  • Min, Jang-Geun;Lee, Keum-Suk
    • Journal of the Korea Society of Computer and Information
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    • v.11 no.5 s.43
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    • pp.139-148
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    • 2006
  • This study is intended to propose quality criteria and Web metrics for usability quality evaluation of multimedia Web sites. Recently, applications of the Web sites are not limited to the area of industry and operating as it integrates the new technology. Also as information super highway becomes common with development or network technology, multimedia Web site is on the rise due to various use of multimedia attributes. Therefore this study expands to apply HTML based Web site quality evaluation studied in Software engineering, HCI, Hypermedia to multimedia Web site, and suggests new metrics by integrating flash usability which is expanding its portion in multimedia Web site lately. The Web metrics proposed in this study are verified by heuristic evaluation from a group of expert. It analyses the results of quantitative and qualitative qualify evaluation on Web Award Korea by comparing the award-winning, high-quality Web site with non-winning Web sites. This study can be used to establish guideline for high-quality multimedia Web site development in the future.

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A Study of the Decision Making System in adopting Off-Site Construction Method in the Initial Stage Considering the Building Project Characteristics -Focused on Structure Work of Apartment Housing- (건축 프로젝트 특성을 고려한 초기 단계에서의 Off-Site Construction 공법 도입 여부 의사 결정 시스템 개발 - 공동주택 골조공사 중심으로 -)

  • Lee, Sungho;Cha, Heesung;Son, Bosik
    • Korean Journal of Construction Engineering and Management
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    • v.23 no.1
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    • pp.89-97
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    • 2022
  • Recently, various problems such as reduced productivity, insufficient inflow of skilled manpower, reduced quality, and concerns about increasing safety accidents have appeared in the domestic construction industry. Stakeholder of construction project are considering the Off-Site Construction (OSC) method rather than the conventional on-site construction as an alternative. Despite the importance of decision making in the early stage of the adoption of OSC, there is a lack of methodologies for rational decision making. In this study, a decision making system has been developed to derive the final construction cost score by deriving the project characteristics, selecting the construction difficulty index, and developing a cost model for each construction method alternatives to calculate the standard construction cost. Using this system, the OSC method can be effectively evaluated in terms of its feasibility in the early stage of construction

Drone Operation Plan at Road Construction Site (도로건설 현장에서의 드론 운용방안)

  • Sung, Sang-Min;Yun, Bu-Yeol;Song, Mi-Hwa;Cho, Jun-Sang
    • Journal of the Korean Society of Industry Convergence
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    • v.23 no.5
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    • pp.709-716
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    • 2020
  • Recently, the drone's equipment development and software technology have dramatically improved. With such developments, the applicability is increasing in various fields that require rapid geospatial information, and in practice, regulations and systems have been established, and the fields in use are increasing. Also, in Korea, corporations and public institutions are actually using and researching drones in fields such as aircraft development, communication technology development, construction site use, and surveying. However, there are no fields where drones are actually used in road construction sites. Therefore, in this study, to utilize drones that have been actively used in the civil engineering and construction fields for road construction, we investigated the current status of the Korea Highway Corporation's field drone use research and classified the possibility of drone introduction by road construction. Finally, a method of using drones at road construction sites was proposed to prepare a method for using drones at road construction sites.

A Study on the Criteria for Appointment of Safety and Health Managers in the Construction Industry (건설업 안전·보건관리자 선임기준 개선 방안에 관한 연구)

  • Lee, Yeonsoo;Park, Yongkyu
    • Journal of the Korean Society of Safety
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    • v.29 no.5
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    • pp.110-115
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    • 2014
  • The construction accidents which had been on the downward trend for the past decades have increased for five consecutive years since 2008. In order to let the increasing trend of construction accident slow growing or switching to decline, various efforts are required of all members in construction industry such as government, employers, construction engineers, safety managers, construction workers, etc. Although the criteria for appointment of safety managers in construction site introduced in 1982 have contributed to prevent construction accident as a forefront for the past 30 years, it has not been a remarkable improvement in the safety manager's status and roles which have been required to change according to the changes of circumstances and environments. In associated with a newly introduced the criteria for appointment of health managers in construction site in the year 2015, the problems such as role, status, number of safety and health managers are needed to be considered comprehensively and improved widely. In this study, we propose several improvement plans which will improve the current criteria for appointment of safety and health managers in construction sites.

Characteristics of Hazardous Air Pollutants in the Steel Industrial City, Pohang (II) - Volatile Organic Compounds (철강산업도시 포항지역 유해대기오염물질의 오염특성 (II) - 휘발성유기화합물)

  • Kim, Min-ji;Seo, Young-Kyo;Cho, Byoung-Yoon;Baek, Sung-Ok
    • Journal of Korean Society for Atmospheric Environment
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    • v.34 no.2
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    • pp.244-258
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    • 2018
  • We performed this study to investigate the spatial, seasonal, and daily variations of the concentrations of volatile organic compounds (VOCs) in Pohang, where large steel industrial complexes are located. Ambient air sampling was undertaken at 4 sites during 4 seasons. Each sample was taken for 4 hours continuously for 8 consecutive days per season at each site. Three sites were located within the Pohang city, but one as a control site in Gyeongju. A total of 72 individual VOCs were determined by thermal desorption coupled with GC/MS, including aliphatics, aromatics, carbonyls and halides. The most abundant VOC was toluene, being followed by ethylbenzene and xylenes. Benzene concentrations(c.a. 0.7 ppb) were found to be much lower than the national ambient standard of 1.5 ppb. Overall, the VOCs levels in Pohang appeared to be lower than other national industrial complexes in Korea such as Shiwha-Banwol, Yeosu-Gwangyang, Gumi, and Ulsan. This implies that steel industry may not give significant impacts on the atmospheric levels of VOCs as much as petrochemical, electronic, and/or textile industries, where large amounts of organic solvents are used.

A Consideration on the Change of Korean Musical and the Characteristic of Musical Costume (한국 뮤지컬의 변천과 뮤지컬 의상의 특성에 관한 고찰)

  • Kim, Hee-Jung
    • The Research Journal of the Costume Culture
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    • v.18 no.6
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    • pp.1112-1128
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    • 2010
  • This study aims to know the trace of Korean musical, consider musical depending on its type, arrange characteristic of musical costume and find out the developmental direction of Korean musical costume with potentials as a culture industry. For study method, the data were collected from thesis, academic journal, book and internet web-site concerning musical costume, literatures were considered and performance costume photos, which were captured via musical performance site, were analyzed. The history of Korean modern-day musical is regarded as starting with (1966) in the full scale. Although foreign musical was imitated in 1970s~1980s, it may be called the growth period of Korean musical because the period showed the commercial possibility. Since 1990s, large-scaled musical securing good work and popularity was popular. In 2000s, musical industry was abundant quantitatively and qualitatively as investment or popularity was significantly expanded. The type of Korean musical are divided to opera musical of European, Broadway musical of American and creative musical of Korean. The costumes used in opera musical of European and Broadway musical of American are borrowed from original works through license or were manufactured in Korea by referring to the costumes of original works and using similar materials or fabrics. The costumes used in creative musical of Korea are designed by either domestic or foreign designers and produced in Korea.

A Study on Site to Build Hydrogen Multi Energy Filling Station in Domestic LPG Station (국내 LPG 충전소 내 수소 융·복합충전소 구축 가능 부지 연구)

  • PARK, JIWON;HUH, YUNSIL;KANG, SEUNGKYU
    • Journal of Hydrogen and New Energy
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    • v.28 no.6
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    • pp.642-648
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    • 2017
  • The use of fossil is causing enviromental all over the world. So hydrogen energy is attracting attention as one of the alternative. The government announced that 30% of the air pollution is because of the Internal Combustion Engine Vehicle. In addition, they plans to reduce Internal Combustion Engine Vehicles by 2030 and increase (electric vehicles, EV) or (fuel cell vehicle, FCV). The FCV is evaluated as a next-generation green car because it has a long driving distance and short charging time. However, the hydrogen industry is not able to expand due to the lack of refueling infrastrucutre. This paper predicts the site of hydrogen refueling stations for the expansion of the hydrogen industry and proposes a method to supply hydrogen multi energy filling stations.

Development of a Air-jet Water Sprayer for Dust Generation Control in the Production Sites of Gloves Making Plants (장갑공장의 분진발생 억제를 위한 에어젯 노즐의 개발)

  • Kim, Jin-Hyun;Choi, Hyun-kuk;Kim, Ki-Dong
    • Journal of the Korean Society of Industry Convergence
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    • v.12 no.2
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    • pp.69-78
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    • 2009
  • Dust in the fabric production sites is increased by the static electricity in air which is generated in the manufacturing process. The static electricity is shown in inverse proportion to humidity of the production sites. The optimum humidity rate for the filament in the production process has been established as 65~75%. Where as, average humidity rate of production site is estimated as 40%. Therefore, it is necessary to raise the humidity rate by 30% to maintain appropriate humidity to control generation of static electricity and dust in the production sites. In this study, a new air-jet water sprayer was developed and it can produce $10{\mu}m$ sprayed particles. When the air-jet water sprayer was operated on the production site dust generation rate was shown far below the environmental standard. It is assumed that when the air jet sprayers was applied to 1,000 fabric machines of 5 gloves making plants, its productivity and rates of operation will be improved by value of about 2.5 billion Won a year.

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A Basic Study for Quantification Model Development of Human Accidents on Construction Site in South Korea (한국 건설현장의 인명사고 리스크 정량화 모델 개발기초 연구)

  • Oh, June-Seok;Lee, Joo-Hyeong;Kim, Tae-Hee;Son, Ki-Young;Son, Seung-Hyun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2019.05a
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    • pp.45-46
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    • 2019
  • Accident rate in domestic construction industry has been increased rapidly in every year. In particular, the rate of death has been shown very high compared with other industries. It means that safety activities performed by government is not effective in reducing the rate of accident. To solve these problems, the risk factors should be predicted in advance, controlled, monitored and managed from start of project to end of project. However, most studies have been conducted by using frequency of occurrence of accident and only listed the importance of risk. Therefore, the objective of this study is to provide basic material to develop risk quantifying model for human accidents on construction site in South Korea. In the future, it is expected to be used as a reference of study on developing safety mangement checklist in construction industry and model for forecasting accident.

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