Occurrence assessment of earth fissure based on genetic algorithms and artificial neural networks in Su-Xi-Chang land subsidence area, China

Wenjing Zhang,Li Gao,Xun Jiao,Jun Yu,Xiaosi Su,Shanghai Du 한국지질과학협의회 2014 Geosciences Journal Vol.18 No.4

Earth fissures in Su-Xi-Chang land subsidence areahave induced massive damages to the area. The non-linear characteristicassociated with the process of earth fissure formation requiresnon-linear method for evaluating the occurrence of the hazard. Based on quantification of influence factors on breeding the hazard,GA-ANN method, which integrates artificial neural networks(ANN) with genetic algorithms (GA), is developed for evaluating theoccurrence of earth fissure hazard. Six indicators, that include thedepth of bedrock burial (DBB), the degree of bedrock relief (DBR),water level (WL) (the II confined aquifer), the gradient of landsubsidence (GLS), transmissivity (T) (the II confined aquifer) andthe thickness of clay soil (TCS), are selected as the input patternsof the integrated approach, and danger index (DI) as the outputpattern. A multilayer back-propagation neural network is trainedwith 30 sets of data samples including 15 sets of earth fissure samplesand 15 sets of safety samples for defining the architecture ofANN. Subsequently, GA is employed by optimizing the initial weightsof trained ANN by minimizing the deviation of output. The efficacy ofthe integrated approach is demonstrated by comparing the deviationof output from ANN and GA-ANN for 5 testing samples andthe result shows that the GA-ANN method is more accurate thanANN in identifying the occurrence of earth fissure. The integratedmethod is applied to the assessment of earth fissure hazard in typicalregions of earth fissure. According to the classification of DI, theregions are divided into four zones ‒ danger zone, sub-danger zone,sub-safe zone and safe zone.

ESD(Electrospray Deposition)를 이용한 SU8 바이오센서 개발

김준완,김범준,히구찌토시로우,야마가따유따까,이원희,김동수,Kim, Jun-Wan,Kim, Beom-Jun,HiGuChi, Toshirowu,YaMaGaTa, Yutaka,Lee, Won-Hui,Kim, Dong-Su 재료연구소 2005 機械와 材料 Vol.17 No.1

Al-Co 공정합금의 일방향응고에 관한 연구

전현용,박수정,이현규 조선대학교 생산기술연구소 2004 生産技術硏究 Vol.26 No.2

Microstructures of unidirectionally solidified Al-Co alloys made by a melt spinner were investigated. In this work, commercially pure a aluminum-cobalt alloys with compositions on the cobalt-rich side of the eutectic point were solidified vertically under the conditions of controlled crystal growth rate (R) and temperature gradientf G). The eutectic microstructure was varied according to the growth conditionl (G/R ratio). When G/R ration was lager than 8.5x10³℃/㎠/sec, the lamellar structure was formed, when G/R raton was smaller than 8.5x10³℃ /㎠/sec, the colony structure was formed. It was found that the interlamellar spacing(λ²) was depedent on the growth rate(R) through the relationship, λ² · R=constant.

투명전극을 이용한 태양전지의 제작 및 특성에 관한 연구

전철원,채건식,이수대,김영국 경남대학교 환경문제연구소 1987 환경연구 Vol.9 No.-

Highly conductive and transparent thin films of ITO are fabricated by spray Pylosis method. The parameters of these thin films are as follows : resistivity ρ=1.5x10^(-3) Ωㆍ??, transmission 90% over visible and IR region. The Parameters of SnO_(2) : F thin films are follows : resistivity ρ=1.8x10^(-3)Ωㆍ??, trans-mission 80% over visible ant IR region. ITO thin films have simple cubic structure with lattice constant α=10.2Å and polycrystalline with (400) and (222). SnO_(2): F thin films have tetragonal system with lattice constant α=4.8Å and polycrystalline with (110), (200), (211) and (310). Under AMI sunlight simulator, the Parameters for ITO/n-Si heterojunction solar cells are open-circuit voltage Voc =0.42 V, short-circuit current Isc =34mA, fill factor FF=0.67 and conversion efficiency η=10%. Under AMI sunlight simulator, the parameters for SnO_(2): F/n -Si heterojunction solar cells are open-circuit voltage Voc =0.36V, short-circuit current Isc =28mA fill factor FF=0.55 and conversion efficiency η=6%.

경부 청소술 후의 승모근기능

박준명,박동식,정광익,이언석,노영수 大韓再活醫學會 1998 Annals of Rehabilitation Medicine Vol.22 No.2

荒廢復舊地의 降雨流出이 溪流水의 電氣傳導度 및 主要 陰이온의 單記變化에 미치는 影響

金秀珍,程龍鎬,金景河,丁昌沂,全宰弘,劉在閏 한국임학회 2004 한국산림과학회지 Vol.93 No.7

강우시 산림유역 계류수의 수질변화과정을 파악하기 위해 1974년에 사방공사를 시행했던 경기도 양주시에 위치한 국립산림과학원 양주 2호 산림수문 유역시험지에서 2003년 3회에 걸쳐 자동채수기(ISCO사, 6712FR)를 이용해 채취한 물시료에 대해 EC, Cl^-, NO₃^- 및 SO₄^(2-)를 측정하였다. 10일간 선행강우가 70mm인 E1(2003년 4월 29일)의 경우 선행강우가 각각 25와 41mm인 E2(2003년 5월 30일)와 E3(BOO3년 7월 18일)보다 계류 유출수의 수량과 EC 변환이 느리게 반응하였는데, 이는 많은 선행강우에 의해 지하수를 통한 기저유출의 기여도가 높았기 때문에 일어난 현상이라고 생각한다. 또한 E1의 경우 생물의 흡수가 봄보다 여름철에 활발하기 때문에 다른 두 이벤트보다 높은 농도의 NO₃^- 농도들 나타내었으며, 모든 이벤트에서 생물활동의 영향을 비교적 적게 받는 Cl^-와 SO₄^(2-) 농도는 시간이 경과함에 따라 서서히 감소하였다 이상의 결과에서 알 구 있듯이 계류수 수질형성기구를 파악하기 위해서는 앞으로 지하수를 포함한 기상학적 요인, 생물적 요인, 지형학적 요인 및 지구화학적 요인 등을 포괄적으로 고려해 분석해야 할 것으로 생각된다. To understand the chemical changes in the streamwater during the storm event, we analyzed EC, Cl^-, NO₃^-, and SO₄^(2-) in Yangju No. 2 catchment, which were collected three times by using a auto-sampler (6712FR, ISCO) in 2003. The EI(April, 29, 2003), which were 70mm anticipant precipitation, showed slack change of stream discharge and EC as compare to E2(anticipant precipitation 2.5mm; May, 30, 2003) and E3(anticipant precipitation 41mm; July, 18, 2003). It was assumed that these phenomena were due to contribution of base flow recharged by much anticipant precipitant. Moreover, NO₃^- concentrations in El were higher than others, and these results may have resulted from biological absorbance ability. The concentrations of Cl^- and SO₄^(2-) decreased with elapsed time after storm events. It is reasonable to consider that meteorology, biology, geomorphology, and geochemistry are important to understanding for mechanism of streamwater chemistry.

學校給食이 어린이 身體 發育ㆍ發達에 미치는 影響

韓相俊,吳壽一,金世煥 江原大學校附設 體育科學硏究所 1991 江原大學校附設體育科學硏究所論文集 Vol.- No.16

To analyze the effects of provision of school lunch (PSL)on the development of children physical physique, 666(boys 343, girls 323)students of K. elementary school (PLS) were compared with 981(boys 491, girls 490)students of C. and K. elementory schools (none PSL) concerning about standing height, sitting height, body weight, chest circumference, and Rohrer index. The conclusions from the results were as follows : 1) There was no significant differency on standing height between PSL and non PSL groups. 2) It shows significantly high on sitting height in the none PSL group of girls of 10 years old. 3) On the body weight and Rohrer index the boys group in PSL 11 years old were presented significantly high, but there were no difference in the other's age group. 4) In the group of 10 years old boys and of 10,11 and 12 yeas old girls were showed significantly higher status on chest circumference in none PSL groups.

시지각분석에 따른 수원민자역사에서의 공간인식과 개선제안 연구

이수동,장성준 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(계획계)

The goals of the study is to investigate the spatial perception of station complex and to verify the problems of space and to suggest direction for improvements. The case study is conducted on Suwon Station Complex, a newly constructed with mixture of railroad and subway station and several commercial facilities, ie. Department store, office block, cinema blocks. For the analysis of space, the Visual Structure Analysis(ISOVIST) was applied. The spaces in concern in the station complex was Front Gate(east side and towards city center), Rear Gate(west side and toward fringe area), and concourse hall. Space is organized into length, width and also perceived by finishing material and level's difference. We found that Suwon Station Complex has a big problem in the main circulation space: it provided not any clue to attract and to guide the people as they are inside a station, but a sense of department store We have to deal with various angles of outcome and additional analyses present public station making further efforts.

웹 질의 기반의 동적 웹 에디터 시스템의 설계 및 구현

조준호,임종수,김응모 成均館大學校 科學技術硏究所 2000 論文集 Vol.51 No.1

As web environment and technology improve rapidly these days, many users get desirable information by means of web, and represent the information that they have through web pages construction. Therefore, importance and application of web editor for easy and convenient homepage making have increased. In this paper, we propose a web query system based on dynamic web editor. The editor makes it possible for users to conveniently make homepages by improving limit of client based web editor or template web page service supplied by hosting site. And users search for desirable information through web pages on the huge web, so they can add this information for users web page or create new web page. Through this web editor which implements server based on the web, users can make web page flexiblely and can make polished web page which increases reading and comprehensiveness to access information easily.

캐릭터 연동 온라인 3D 게임을 위한 실시간 모션캡쳐 시스템 개발

이준호,유영기,노병욱,이수진 선문대학교 ·중소기업기술지원연구소 2002 선문공대 연구/기술 논문집 Vol.7 No.1

최근들어 3차원 가상현실의 발전과 더불어 동작을 트랙킹하는 모션캡쳐는 엔터테인먼트, 의학, 스포츠, 교육, 산업등에 다양하게 널리 사용되어지고 있다. 특히 엔터테인먼트분야의 애니메이션과 게임등에서는 캐릭터의 생성에 모션캡쳐 기술을 사용하는데 기존에는 마우스, 조이스틱, 미디 슬라이더(Midi Sliders) 및 기타 장치들을 사용하여 캐릭터를 직접 연기시키는 방법을 사용하였으나 모션캡쳐에 의한 방법은 이전에 볼 수 있었던 그 어떤 방법보다도 자연스러운 움직임을 만들어낼 수 있다. 본 연구에서는 캐릭터를 연동한 온라인 3D 게임을 실현하기 위하여 광센서를 이용한 저가이면서도 빠른 샘플링 빈도를 갖는 모션캡쳐 시스템을 개발하고자 한다. Motion trackings are being used in part of the entertainment, medical, sports, education and industry with the development of 3D virtual-reality. In particular, the technology is used for animation and games as a part of entertainment. We can make very smooth motion that was never realized before, if we use the technology instead of using mouse, joystick, midi-sliders and so on for making some characters. In this research, we have developed a very low priced and fast sampling system using optic sensors for capturing the motion.