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

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

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%.

경포호의 어류상 및 어류군집 특성

최준길,박승철,장영수,이광열,최재석 강원대학교 부속 환경연구소 2005 Journal of the Environment Vol.2 No.-

The characteristics of ichthyofauna and fish community in the Lagoon Gyeongpo, Korea were investigated from May to October 2005. The total number of fish caught during the period was representing 26 specis and 18 families. Most dominant species was T. hakonensis(50.65%) and subdominant specis was A. flavimaus(25.41%). K. punctatatus(11.07%), M. cephalus(6.53%), E. japonicus(1.46%), C. castaneus(1.01%) were also numerous. The total biomass of collected fish showed 147.00kg, 135.83kg, 85.60kg,23.76kg, repectively. A pattern of the fish community according to seasonal veriations appear to be related tp spawning periods of species. Comparison of the ichthyofauna in present study with the references from early years suggests that there has been a gradual decrease, in composition, of primary freshwater specis accompanying with the increase of peripheral freshwater and seawater specis.

두경부 편평상피암에서의 MIB-1, p53, bcl-2와 apoptosis의 발현 및 상호 연관성

손용준,한지용,윤형기,장수원,윤혜경,김우형,이희철 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.4

Objective : Squamous cell carcinoma of the head and neck represents approximately 2.0∼4.0% of all malignant tumors, with an etiology closely associated with smoking, drinking and various genetic alterations. The purpose of this study was to investigate the correlation of MIB-1, p53, bcl-2 and apoptosis according to degree of differentitation of squamous cell carcinoma. Methods and Material : forty-eight cases of squamous cell carcinoma of the head and neck were selected for this study. MIB-1, p53, bc1-2 expression rate were studied by iromunogistochemical staining and the number of apoptosis observed by TUNEL method. Results : The expressioins of MIB-1, p53, bcl-2 and apoptosis were found in 56.3%, 50.0%, 14.6%, 85.4%, of 48 cases of squamous cell carcinoma, respectively. The expression of MIB-1, p53 and apoptosis were more higher in poorly differentiated cases than well differentiated cases. MIB-1 expression was related with p53 mutation (p<0.05) and apoptosis rate(p<0.05). Conclusion : From these results. the expressions of MIB-1, bcl-2 and apoptosis were related with degree of differentiation of squamous cell carcinoma and correlation among these parameters.

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.

내시경적 조임근절개술후에 발생한 췌십이지장 가성동맥류 1예

박수영,김윤정,박진한,전현수,박시형,이영진,이은지,김지현 仁濟大學校 白病院 2010 仁濟醫學 Vol.31 No.-

We reported a case of pancreatic pseudoaneurysm, involving pancreaticoduodenal artery, developed after endoscopic retrograde cholangiopancreatography(ERCP) with endoscopic sphinterotomy. A 54 year old woman was transferred to our hospital due to sustained hematochezia and hypovolemia. A week before admission, she underwent ERCP with endoscopic sphinterotomy for acute cholangitis in local clinics. She developed abdominal pain and hematochezia at 12 hours after the procedures. A post procedure contrast enhanced computed tomography of abdomen demonstrated a pseudoaneurysm in inferior portion of pancreatic head. This was not present on the pre procedure contrast enhanced computed tomography of abdomen and was thought to arise from the pancreaticoduodenal artery as a complication of the pre sphincterotomy. She was brought to our emergency room in a state of hypovolemia. A upper endoscopy showed active bleeding from ampula of vater. An celiac angiography demonstrated pancreatic pseudoaneurysm involving inferior pancreaticoduodenal artery and selective coil embolization of was performed.

古都 全州의 歷史景觀 再構成에 關한 硏究

張明洙,宋浚泰 全北大學校 附設 都市및環境硏究所 1990 都市 및 環境硏究 Vol.5 No.-

The purpose of this study is to, through the research of the history of Chonju, find out the object of restoration among historic remains damaged artificially, preserve the characteristics of the areas in which historic remains existing right now are cellectively distributed and to re-organize their historic environment coupled with cultural individuality and peculiarity. The results of the study are summarized as follows; First, the East gate, the West gate, and the North gate except for the presently existing the South gate should be restored, and Sun Hwa Dang which was the center of Kwan-A in the old castle (old Chonju city) and other accessory buildings restored. Second, in order to solve these problems mentioned above, I propose that area of human activity, one of the elements for urban landscape, be organized.