2006 International Forum on Strategic Technology最新文献

{"title":"Analysis of Particulate Concentrations at Highway Areas in Ulsan","authors":"Haengah Kim Lee, Byeong-Kyu Lee, Eui-Ryang Jeong, T. Dong","doi":"10.1109/IFOST.2006.312350","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312350","url":null,"abstract":"Concentrations of participate matter (PM) on highway areas in Ulsan of Korea were analyzed using a portable PM sampler and a low volume PM10 sampler during a summer sampling period. This study analyzed the air concentrations of PM1.0, PM2.5, PM7.0, PM10, and TSP (total suspended particulate) at 4 places, having quite different environment, located at highway areas in Ulsan. The PM measurements on 2 week days and 2 weekend days were conducted during the four different time zones (morning rush hour, day time, evening rush hour, midnight hour) of each measurement day, respectively. The highest average concentrations of PM1.0, PM2.5, PM7.0, PM10, and TSP were observed at the bridge on the Kyungbu highway followed by the start point of Ulsan highway with a busy traffic rotary. The PM concentrations at the toll gate and the bus stop of Ulsan highway were similar; however, they were much lower than those at the bridge or start point. The PM concentrations during the midnight and morning rush hours were much higher than those of the day time or evening rush hours. All the PM concentrations and the concentration ratio of PM 1.0 to PM2.5 at the three sites (highway start point, bus stop, bridge) during the weekend days significantly decreased as compared to their concentrations during the week days. In particular, the smaller particle sizes, the larger decrease in PM concentrations were observed at the highway start point and bus stop. However, all the PM concentrations and the concentration ratio of PM 1.0 to PM2.5 at the toll gate increased as compared to those during the week days. The smaller particle sizes, the larger increase in PM concentrations were observed at the highway toll gate. The PM concentrations increased with the increase of relative humidity level during the measurement periods showing significant correlation coefficients. The PM concentrations also increased with the increase of the total traffic density and diesel vehicle volume during day time and evening rush hours. However, they may not be significantly related to the traffic density but the humidity level during midnight time and morning rush hours which usually shows stable atmospheric conditions. The PM concentrations seem to be decreased with the average wind speed during the measurement periods.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"342 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122322383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Industrial Symbiosis as an Integrated Business/Environment Management Process: The Case of Ulsan Industrial Complex","authors":"Jae-yeon Won, Jung-Hoon Kim, Sang-yoon Lee, Hung‐Suck Park","doi":"10.1109/IFOST.2006.312349","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312349","url":null,"abstract":"The Ulsan/Mipo Onsan industrial complex is the largest industrial area of petrochemicals, automobiles, shipbuilding and nonferrous metals in Korea. Over the past decade, a few companies in Ulsan have been interested in trading their excess materials from the production line for economic purpose, but the increasing numbers of companies are participating to the industrial symbiosis (IS). By the recovery of previously discarded waste or by-products and recycling of wasted heat and water, Ulsan Eco-Industrial Park project team is taking the head for designing and implementing the industrial symbiosis by which the companies can sustain economically and environmentally. This paper describes an overview of current and future development of industrial symbiosis such as by-product exchange (BPX) and discusses the further research in terms of design and implementation of industrial symbiosis.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116730060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of a Smart Gas Sensor System for Room Air-Cleaner of Automobile -Thick - Film Metal Oxide Semiconductor Gas Sensor","authors":"J. Kim, SungW . Kang, Tae Shin, M. Yang, Kyu-Byoung Lee","doi":"10.1109/IFOST.2006.312250","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312250","url":null,"abstract":"It is almost impossible to secure the reproductibility and stability of a commercial thick-film metal oxide semiconductor gas sensor since it is very difficult to keep the consistency of the manufacturing environment. Thus it is widely known that the general semiconductor-oxide gas sensors are not appropriate for the precise measurement systems. In this paper, the output characteristic analyzer of the various thick-film metal oxide semiconductor gas sensors that are used to recognize the air quality of passenger's space of automobile are proposed and examined. The analyzed output characters in normal air chamber are grouped by sensor ranks and used to fill out the characteristic table of the thick-film metal oxide semiconductor gas sensors. The characteristic table is used to determine the rank of the sensor that is equipped in the current air cleaner system of an automobile. The proposed air control system can also adapt the on demand operation that recognizes the history of the passenger's manual-control.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123841971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chromium Nitride Coating by Inductively Coupled Plasma-assisted RF Magnetron Sputtering","authors":"Ho-sung Jang, Yu-sung Kim, Dae-Jam Choi, Jae-Young Lee, Jihong Park, Jong-In Choi, B. Choi, Y. You, H. Chun, D. Kim","doi":"10.1109/IFOST.2006.312331","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312331","url":null,"abstract":"Chromium nitride (CrN) films were deposited by using inductively coupled plasma (ICP) assisted RF magnetron sputtering to investigate the effect of substrate bias voltage on the hardness, surface morphology roughness, and crystalline growth on Si(100) substrate. As increasing substrate bias voltage (Vb), surface hardness increased from 5 to 15 GPa. The grain size also increased proportionally as increasing Vb from -30 to -80, while beyond -80 Vb, the grain size was deteriorated by an intense N+ion bombardment.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125239247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of a New Signal Structure of Cooperative Communication over Rayleigh Fading Channel","authors":"Jeongkeun Choi, H. Kong","doi":"10.1109/IFOST.2006.312276","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312276","url":null,"abstract":"It is required to research on spatial diversity and high-rate data modulation techniques to support multimedia services. In this paper, we propose OFDM (orthogonal frequency division multiplexing) system using a new cooperative communication scheme to have benefits from diversity gain through single antenna mobile's partnership. The proposed system has strong point of supporting high speed data transmission under frequency selective fading channel. We perform the computer simulation to verify the proposed system through comparing cooperative mode and non-cooperative mode under Rayleigh fading channel plus AWGN (additive white Gaussian noise).","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113975288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical Properties of Cu added Ni bulk amorphous powder composite","authors":"Jin-Chun Kim, H. Ryu, Ji-soon Kim, Y. Kwon, B. Kim, Yong-Jin Kim","doi":"10.1109/IFOST.2006.312216","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312216","url":null,"abstract":"In this study, the Ni-based (Ni59Zr20Ti16Si2Sn3) BMG powders were produced by the high pressure gas atomization process, and the ductile Cu powders were mixed using the spray drying process or the ball milling process. The Ni-based amorphous powders and Cu added composite powders were compacted by a simple die hot press and a spark plasma sintering (SPS) processes into cylindrical. In the hot press, the prepared powders were pressed at 570degC (in the at Tg-Tx range) to avoid the crystallization. However, the compacted samples did not reach the theoretical density. At the 900degC, we could get the full densified specimens, but the crystallization of the samples happened. The relative density increased from 79% to 98% when the pressure increased up to 350 MPa by optimum control of the SPS process parameters. The micro-Vickers hardness was also increased from 774 Hv to 810 Hv with increasing temperature from 450degC to 460degC.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131187214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel Membrane Electrode Assembly (MEA) Fabrication for PEMFC Operations under Non-humidified Conditions","authors":"Sy. Lee, H. Kim, K. Kim, E. Cho, I. Oh, T. Lim","doi":"10.1109/IFOST.2006.312285","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312285","url":null,"abstract":"The operation under non-humidified condition was demonstrated with novel MEA (membrane electrode assembly) for a PEMFC (proton exchange membrane fuel cell). For a conventional PEMFC operation, Pt is loaded uniformly on the whole active area of MEA. In the report, Pt catalyst was coated with a gradient on the active area of MEA. The catalyst amount was reduced gradually from cathode inlet to outlet. When the cell was fully humidified, the performance of gradient catalyst coated MEA was lower than that of the uniform catalyst coated one. However, when the cell was operated under non-humidified condition, the cell performance of the gradient catalyst coated MEA was higher than that of the uniform catalyst coated MEA. In the case of the gradient catalyst coated electrode, the amount of water which was generated at the cathode inlet site was relatively large compared to uniform catalyst coated one and the water was used to hydrate the MEA properly, resulting in higher cell performance under non-humidified condition.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127599298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of Aluminum Suspension by Hot Air Forming Process","authors":"W. Kim, J.D. Park, J. Kim, S. Jang, S.M. Kim, C. Ok, W. Kim","doi":"10.1109/IFOST.2006.312256","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312256","url":null,"abstract":"Aluminum alloys are used for automobile components in recent years to reduce the weight of an automobile to improve environmental problems In order to apply aluminum alloys to light-weight automobile parts, many metal forming processes have been developed. Hot-air blow forming process is one of the forming processes receiving recent attention. In the current study, fabrication of aluminum suspensions has been attempted using seamless aluminum tubes. On the basis of hot workability of the extruded tube and FEM simulation results, optimum condition for fabricating aluminum suspension parts by hot air forming could be determined.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133790258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of the Correlation between Particulate Matter Concentrations and Traffic Volume in the Metropolitan City of Ulsan, Korea","authors":"Byeong-Kyu Lee, Haengah Kim Lee, O-Kun Lee","doi":"10.1109/IFOST.2006.312329","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312329","url":null,"abstract":"Road vehicles, such as cars, trucks and buses, can produce significant amount of particular matter (PM) in urban areas. This study analyzes the correlation between air concentrations of PM (PM2.5, PM10, TSP (total suspended particulate)) and traffic volume near road sides in the metropolitan city of Ulsan, Korea. 9 road sides or areas selected for the study included a traffic rotary, 2 circulation roads (an industrial road and a car road), 4 downtown roads (including city hall) in Nam-gu, 1 residential area road in Chung-gu, 1 residential and industrial road in Dong-gu, which might represent major traffic density in Ulsan. A beta-ray attenuator and a high volume air sampler were used for sampling of PM during 3 classified time periods (morning, afternoon, evening) in a sampling day. Traffic volume has been counted using a manual counter during each PM sampling. High correlations were identified between PM concentrations and traffic volume [PM2.5 vs (heavy duty vehicles (HDV) + small vehicles (SV)), PM2.5 vs SV, PM10 vs (HDV+SV), PM10 vs SV, and TSP vs (HDV+SV)]. Also, significantly high correlations were obtained between PM concentrations [PM2.5 vs PM10, PM10 vs TSP, PM2.5 vs TSP, afternoon PM2.5 vs evening PM2.5, and afternoon PM10 vs evening PM2.5]. However, the correlations between PM10 and HDV and between TSP and HDV were very weak. PM concentration characteristics obtained from the circulation road that its traffic mostly consists of small cars and its environment has a lot of green areas were quite different from those obtained from the road sides passing downtown or residential areas of Ulsan.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124788393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Artificial Immune System based Cooperative Strategies for Robot Soccer Competition","authors":"G. Luh, Chun-Yin Wu, Wei‐Wen Liu","doi":"10.1109/IFOST.2006.312251","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312251","url":null,"abstract":"This study proposes an immune network based cooperative strategy for robot soccer systems. The strategy enables robots to select proper behaviors from `shot', `pass', `kick', `chase', `track', and `guard'. In addition, the proposed layered immune network achieves cooperation and coordination between each robot. The proposed architecture is evaluated on the SimuroSot Middle league, a 5-vs-5 simulation platform in FIRA.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124829079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}