• Title/Summary/Keyword: Urban factory

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An analysis of tests process for verification of DC Traction system performance (직류 급전시스템 성능검증을 위한 시험방안 분석)

  • Jung, Ho-Sung;Han, Moon-Seob;Jang, Dong-Uk;Lee, Ki-Won
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.499-504
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    • 2008
  • DC substation of urban transit supplies a suitable DC power on electricity vehicles by being supplied from KEPCO. DC substation is verified electrical safety of system through pre-operation inspection on electrical installations to be supplied power from KEPCO. However, because test items and method for DC traction system are unprepared on pre-operation inspection, the general safety and performance verification of DC traction system are very insufficient. Therefore this paper analyze the overseas test examples such as factory equipment tests, factory combined tests and railway tests for the safety and performance verification of DC traction system and present a suitable test items and test standard in domestic.

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Alterations of Blood Cholinesterase Activity and Urinary Para-nitrophenol Excretion After Exposure to Organophosphorus Insecticides (유기인제 농약 폭로로 인한 혈중 Cholinesterase 활성치와 요중 P-nitrophenol의 배설량의 변동)

  • Lee, Byung-Kook;Chung, Kyou-Chull
    • Journal of Preventive Medicine and Public Health
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    • v.7 no.1
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    • pp.115-121
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    • 1974
  • In order to evaluate the health hazard due to exposure to organophosphorus insecticides, we measured the blood cholinesterase activity ana urinary para-nitrophenol among 56 exposed subjects. They are orchard workers, rice plant workers and smithion factory workers. The clinical symptoms were also checked by physicians. We also measured the blood cholinesterase activity and urinary para-nitrophenol excretion of 20 urban people and 15 rural people who had never been exposed to organophosphorus insecticides in order to compare them according to age, sex and geographical differences. And these results were also compared with those of exposed groups. The results obtained were as follows. 1. The normal plasma cholinesterase activity and cell cholinestrase activity were $0.861{\pm}0.148\;{\Delta}pH/hr$ and $0.822{\pm}0.154\;{\Delta}pH/hr$. And normal para-nitrophenol in urine was $1.21{\pm}0.52mg/liter$. 2. No significant difference was existed in blood cholinesterase activities and urinary para-nitrophenol excre tion according to sex, age and geographical difference. 3. The plasma cholinesterase activity and cell cholinesterase activity of orchard workers, rice plant workers and smithion factory workers were $0.682{\pm}0.189\;{\Delta}pH/hr,\;0.775{\pm}0.160\;{\Delta}pH/hr,\;0.754{\pm}0.123\;{\Delta}pH/hr,\;and\;0.691{\pm}0.082\;{\Delta}pH/hr,\;0.756{\pm}0.117\;{\Delta}pH/hr,\;0.739{\pm}0.117\;{\Delta}pH/hr$. And significant decreses in blood cholinesterase activities were existed among orchard workers and smithion factory workers compared with control group. 4, The urinary para-nitrophenol excretions of orchard workers, rice plant workers and smithion factory workers were $1.33{\pm}0.66mg/liter,\;1.19{\pm}0.88mg/liter\;and\;1.37{\pm}0.67mg/liter$ and there were no significant difference between exposed groups and control group. 5. The clinical symptoms complained during and after organophosphorus insecticides exposure were frequently ranked by headache (67.7%) and vertigo (64.5%) and muscular ataxia and weakness (51.6%).

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Analysis of Carbon Dioxide Exchange and Toxic Gas Behavior in the Urban-Type Plant Factory System (도시형 식물공장 시스템의 탄산가스 변화 및 유해가스 거동분석)

  • 박종석;손정익;박한영
    • Proceedings of the Korean Society for Bio-Environment Control Conference
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    • 1998.10a
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    • pp.69-72
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    • 1998
  • 도시환경은 다양한 형태로 발생되는 공해로 인해 악화되고 있으며 이러한 환경은 인간의 건강을 위협하며, 도시뿐 아니라 주변지역으로의 환경파괴를 가속시키고 있다. 도시 내에서 발생하는 탄산가스, 폐열 등의 인간에게 유해한 물질을 농업으로 전환시켜 농업생산에 이용하는 것은 필요하다고 할 수 있다. 도시내의 잉여 이산화탄소를 이용하여 식물을 생산하고 식물재배공간으로부터 나오는 신선한 공기를 인간이 이용하는 도시형 식물공장의 개념은 환경과 생산의 두 가지 측면을 가지고 있다. (중략)

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Prediction of Carbon Dioxide Concentration in Urban-type Plant Factory System (도시형 식물공장에서의 탄산가스 농도 예측)

  • 손정익;박종석;박한영
    • Proceedings of the Korean Society for Bio-Environment Control Conference
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    • 1998.10a
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    • pp.66-68
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    • 1998
  • 도시환경은 가양한 형태로 발생되는 공해로 인하여 악화되고 있다. 각종 유해가스는 대기오염을 통해 인간의 건강을 위협하고 있으며, 도시 폐기물은 도시 및 주변지역으로의 환경파괴를 가속시키고 있다. 도시 내에서 방출되는 각종 에너지원을 식물공장을 통한 적정 작물생산에 적용시킬 수 있다면, 도시와 상호 보완적인 역할이 가능한 환경 보존형 도시농업이 가능하다. (중략)

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Standardization Design & Manufacturing of Traction Motor for Urban Transit EMU (도시철도 표준전동차용 견인전동기의 국산화 설계 및 제작)

  • Wang, J.B.;Lee, S.G.;Park, H.J.;Ha, H.S.;Hur, I.G.;Lee, I.W.;Park, C.S.
    • Proceedings of the KIEE Conference
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    • 1999.07a
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    • pp.424-426
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    • 1999
  • In this paper, the design characteristics, the manufacturing process and the results of performance test on the AC traction motor for urban transit standard E.M.U which is newly developed with applying standardization specification will be introduced. It is reviewed that the design and performance analysis on conventional motors considering system correlation and design constraint and the design optimization through an analysis of electro-magnetic, thermal and dynamic properties. The properties of factory products manufactured by 200 Class VPI process exhibit a excellent performance with a lower noise and vibration, higher efficiency and power factor etc.

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Stream Environment Monitoring using UAV Images (RGB, Thermal Infrared) (UAV 영상(RGB, 적외 열 영상)을 활용한 하천환경 모니터링)

  • Kang, Joon-Oh;Kim, Dal-Joo;Han, Woong-Ji;Lee, Yong-Chang
    • Journal of Urban Science
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    • v.6 no.2
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    • pp.17-27
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    • 2017
  • Recently, civil complaints have increased due to water pollution and bad smell in rivers. Therefore, attention is focused on improving the river environment. The purpose of this study is to acquire RGB and thermal infrared images using UAV for sewage outlet and to monitor the status of stream pollution and the applicability UAV based images for river embankment maintenance plan was examined. The accuracy of the 3D model was examination by SfM(Structure from Motion) based images analysis on river embankment maintenance area. Especially, The wastewater discharged from the factory near the river was detected as an thermal infrared images and the flow of wastewater was monitored. As a result of the study, we could monitor the cause and flows of wastewater pollution by detecting temperature change caused by wastewater inflow using UAV images. In addition, UAV based a high precision 3D model (DTM, Digital Topographic Map, Orthophoto Mosaic) was produced to obtain precise DSM(Digital Surface Model) and vegetation cover information for river embankment maintenance.

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Fundamental Investigation of Functional Property of Concrete Mixed with Functional Materials

  • Lee, Jong-Chan;Lee, Moon-Hwan;Lee, Sae-Hyun;Park, Young-Sin;Park, Jae-Myung
    • International Journal of Concrete Structures and Materials
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    • v.18 no.3E
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    • pp.165-171
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    • 2006
  • Environment-friendly materials are increasingly used as building construction materials nowadays, and the market share of those is growing. Accordingly, the research and developments in terms of environmental value are progressing steadily now. The main characteristics of environmental products are far-infrared radiation, negative-ion emission, electromagnetic wave shielding, and antimicrobial property. These products are often used in mortar and as spray on the finishing material. Nevertheless, there are hardly any research on the functional properties of concrete, the main material in construction field. Thus, we evaluated such basic properties of concrete as slump, compressive strength and air content while using such functional materials as sericite, wood-pattern sandstone, carbon black and nano-metric silver solution to focus on their functional properties like far-infrared radiation, negative ion emission, electro magnetic wave shielding, and antimicrobial activity in this research. The results indicated that the most useful material in the functional materials was carbon black. Sericite and nano-metric silver solution had a little effect on the functional property. Moreover, although wood-pattern sandstone had very high functional property, it exhibited too low compressive strength to be applied, to concrete as a factory product. Antimicrobial property of nano-metric silver solution in the concrete was not clear demonstrated, but if these specimens were to be aged in $CO_2$ gas for a long time, it might be apparent.

Hub Facilities in Vehicle Movement Network between Livestock Facilities (사회연결망 분석을 통한 축산시설 차량이동 네크워크의 허브시설 도출)

  • Lee, Gyoung-Ju;Park, Son-Il;Lee, Kwang-Nyeong;Kim, Han-Yee;Park, Jin-Ho;Hong, Sungjo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.6
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    • pp.137-146
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    • 2018
  • The purpose of this study was to derive and analyze the hub facilities that occupy major positions in the vehicle movement networks of livestock facilities. For this purpose, this study used the KAHIS data provided by Animal and Plant Quarantine Agency. The hub facilities were derived from the degree centrality & betweenness centrality. The analysis results are summarized as follows. First, in a livestock facility's vehicle movement network, there are a small number of hub facilities with very high centrality indicator values compared to other facilities. Second, the hub facilities based on the degree centrality are the feed factory, the milk collecting center, slaughterhouse, slaughterhouse for chicken, and livestock markets. Third, the hub facilities based on the betweenness centrality are the livestock markets, the feed factory, and slaughterhouse. Fourth, hub facilities based on the degree centrality are concentrated in a particular area, but the hub facilities based on betweenness centrality are distributed relatively evenly.

Innovation and craft in a climate of technological change and diffusion

  • Hann, Michael A.
    • The Research Journal of the Costume Culture
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    • v.25 no.5
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    • pp.708-717
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    • 2017
  • Industrial innovation in Britain, during the eighteenth and nineteenth centuries, stimulated the introduction of the factory system and the migration of people from rural agricultural communities to urban industrial societies. The factory system brought elevated levels of economic growth to the purveyors of capitalism, but forced people to migrate into cities where working conditions in factories were, in general, harsh and brutal, and living conditions were cramped, overcrowded and unsanitary. Industrial developments, known collectively as the 'Industrial Revolution', were driven initially by the harnessing of water and steam power, and the widespread construction of rail, shipping and road networks. Parallel with these changes, came the development of purchasing 'middle class', consumers. Various technological ripples (or waves of innovative activity) continued (worldwide) up to the early-twenty-first century. Of recent note are innovations in digital technology, with associated developments, for example, in artificial intelligence, robotics, 3-D printing, materials technology, computing, energy storage, nano-technology, data storage, biotechnology, 'smart textiles' and the introduction of what has become known as 'e-commerce'. This paper identifies the more important early technological innovations, their influence on textile manufacture, distribution and consumption, and the changed role of the designer and craftsperson over the course of these technological ripples. The implications of non-ethical production, globalisation and so-called 'fast fashion' and non-sustainability of manufacture are examined, and the potential benefits and opportunities offered by new and developing forms of social media are considered. The message is that hand-crafted products are ethical, sustainable and durable.

BIM Application Method for the Quality Management of Modular Houses (모듈러주택 품질관리를 위한 BIM 적용 방안)

  • Lee, Dong Gun;Kim, Jin Won;Sohn, Jeong Rak
    • Land and Housing Review
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    • v.10 no.2
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    • pp.59-67
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    • 2019
  • The recent paradigm shift in the construction industry has led to a growing demand for industrial construction. In particular, interest in modular housing, one of the areas of industrialization architecture, is soaring. Modular housing is a construction method for completing a building by transporting factory-built modules to the site and assembling them. However, modular housing in Korea has various problems such as errors in design books, lack of factory drawings, and lack of on-site construction plans. BIM is a tool for accumulating, producing and managing various information through 3D models and is a solution to solve various problems of modular housing. In this study, problems of modular housing and BIM utilization of modular housing were presented as ways to ensure the quality of modular housing. Therefore, this study analyzed the problems that are occurring in the construction process of modular housing. And, to address the problem of modular housing, BIM utilization measures were proposed for each modular process step. However, the application of BIM in domestic modular project is currently being carried out in pilot research project. Because of this, the BIM utilize method for modular housing is limited based on the BIM use for general projects and the examples for some modular pilot projects.