• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.5
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• pp.3557-3566
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• 2015

In the case of elevated railway station in which railway is connected with superstructure of station, vibration and noise level is relatively higher than those of general structure type station due to structural characteristic which transmits vibration directly. Therefore, characteristic understanding of structural vibration and accompanying structure cause noise and establishment of reduction plan through the results are in need. Test and analysis are performed in this research to consider correlativity between structural vibration and accompanying structure cause noise when external forces are applied on standard slab and floating slab which is able to isolate vibration. By producing and loading on standard and floating slab, vibration and noise response are measured while simulation using numerical analysis, finite element method and SEA method is performed. The results about structural dynamic behavior of slab, correlativity between structural vibration and noise, reduction performance of floating slab is deduced through the analysis of tests.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.7
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• pp.3220-3226
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• 2011

In order to monitor internal risk factors such as fire, terror, etc. on the subway station, the surveillance systems using CCTV and various kinds of sensors have been implemented and recently, introduction of surveillance systems using an advanced IT technology, sensor network technology is tried on several areas. Since 2007, Korean government has made an effort to develop the intelligent surveillance and monitoring system, which can monitor fire, intrusion, passenger congestion, health-state of structure, etc., by using wireless sensor network technology and intelligent video analytic technique. For that purpose, this study carried out field wireless communication environment test on Chungmuro Station of Seoul Metro on the basis of ZigBee that is considered as a representative wireless sensor network before field application of the intelligent integrated surveillance system being developed, arranged and analyzed and ZigBee based wireless communication environment test results on the platform and waiting room of Chungmuro Station on this paper. Results of wireless spectrum analysis on the platform and waiting room showed that there is no radio frequency overlapped with that of ZigBee based sensor network and no frequency interference with adjacent frequencies separated 10MHz or more. As results of wireless data transmission test using ZigBee showed that data transmission is influenced by multi-path fading effect from the number and flow rate of passengers on the platform or the waiting room rather than effects from entrance and exit of the train to/from the platform, it should be considered when implementing the intelligent integrated surveillance system on the station.

• Journal of the Korean Geographical Society
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• v.51 no.4
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• pp.541-558
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• 2016

Landfill has been a long pending issue in the Seoul Metropolitan Region since it was created. Adopting Painter's notion of "territory-effect," this paper analyzes the network formation and change of diverse actors and territory as an effect of networked relations according to four periods from the creation of the landfill to current extension of landfill use. The results are as followed. First, the network formation and composition of major actors has been changed together with historical-geographical conditions. Second, these networks created territory as an effect and re-articulated the configuration of conflicts and solidarity of diverse actors. Third, territory created as an network-effect are different in each period, and is continuously reterritorializing. These findings suggest that territory is never complete and always in the making.

• Communications of Mathematical Education
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• v.30 no.2
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• pp.139-159
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• 2016

This study is the field of mathematics education on the assumption that they can extend outside the classroom. Recent mathematics education is increasing the importance of field experience and various activities based on real-life math education. Thus, it is necessary to consider this situation in pre-service teacher's education. The purpose of this study is to apply the 'Mathematics Field Trips Activities' in the pre-mathematics teacher education. So the specific case of 'Mathematics Field Trips Activities' was analyzed. Mathematics teachers conducted preliminary exploration activities on the historical cultural property which were effective in the following four aspects. First, cognitive effects and second, definitive effect. Third, cultural-mathematical effect. Fourth, the effect on improving math class. Finally they were summarized and divided into classes target content knowledge and teaching knowledge both sides. As a result, the 'Mathematics Field Trips Activities' were found to have significant effects on pre-service math teacher. Finally, ongoing research is needed to settle into a new teaching and learning methods.

• The Inventors News
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• no.21
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• pp.3-4
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• 2004

특허청, 특허 신기술 사업에 대대적 자금 지원 - 생리통 줄이는데 효과있는 생리대 나온다 - 운전 시야의 사각지대 없앤다 - 특허청, 특허행정혁신 위한 워크숍 개최 - 공무원들, 특허 출원에 끊임없는 관심 보낸다 - 탁월한 처녀 발명가 - 지난해, BM 특허 출원$\cdot$등록 건수 증가, 심사 대기기간 단축 - 한국여성발명계의 역사적인 국제적 지표설정을 제안한다

• The monthly packaging world
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• s.98
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• pp.202-205
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• 2001

1933년 출시된 안티푸라민 연고는 유한양행의 역사와 더불어 탄생한 제품이며 현재까지도 우리나라의 대표적인 장수의약품으로 손꼽히고 있고, 지난 70여년 동안 많은 소비자들에게 사랑 받아 왔다. 안티푸라민의 등장은 가난하던 시절, 동상이나 피부가 튼 곳, 근육통 등에 탁월한 효과를 발휘하여 한때 만병통치약으로 여겨질 때도 있었을 만큼 그 인기가 높았다. 가정상비약이라는 개념조차 없었던 시대에도 각 가정마다 한 개씩은 있었던 안티푸라민 연고제품의 전통 못지

• Korea Petroleum Association Journal
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• no.4 s.182
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• pp.90-93
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• 1996

이 자료는 The Economist지 1995년 11월 25일자부터 「Schools Brief」제하에 연재되고 있는 경제관련 주요쟁점의 오류 (economic fallacies)에 관한 소론의 마지막으로 시장실패가 정부개입을 정당화하는 것으로 속단하는 경향이 있으나, 시장은 스스로 실패를 시정하는 능력을 갖고 있으며 역사적으로도 정부개입의 효과는 신통치 않았다는 주장을 정리한 것임. <편집자 주>

• Agrochemical news magazine
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• v.21 no.2 s.155
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• pp.46-49
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• 2000

살균제를 지속적으로 사용하는데 있어 저항성관리는 매우 중요하다. 저항성 관리가 없으면 농민과 재배자에 이용가능한 살균 성분수와 효과가 심각하게 감소될 수 있으며 제품은 제조회사들이 작물보호분야에서 요구되는 기술발전에 필수적인 연구개발 계획을 유지하기에 충분한 이윤을 내기전에 쓸모없이 될 수도 있다. 그러나 저항성 관리는 그 역사가 20년도 안되는 비교적 새로운 과학이어서 아직도 많은 연구가 필요한 분야이다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2009.06a
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• pp.1067-1068
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• 2009

• 전기의세계
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• v.23 no.2
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• pp.11-14
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• 1974

1972년 9월 한국외환은행에서는 우리나라 computer역사상 처음으로 real time on-line system개발에 성공하여 본점의 보통예금업무를 EDP대체 처리하게 되었으며, 같은 해 10월에는 경부간 440km의 장거리를 연결하여 data communication을 통한 EDP처리를 개시하였다. 이제 본고에서는 그 동안의 운영영험을 토대로 한국외환은행의 on-line system현황과 이용효과를 간단히 소개하고 data communicaton을 위한 준비작업을 위시한 data운영결과를 중점적으로 검토한 후 그 문제점을 소개하고자 한다.