In the first part, depending on three or more images, the main research work are listed as follows:(1) using SVD decomposition to realize projective reconstruction;(2) realizing camera self-calibration by solving Kruppa's equation;(3) recovering Euclidean reconstruction from projective reconstruction. Depending on only two images, the main researches are:(1) making out infinite plane homography matrix by using scene structure information, then recovering affine reconstruction from projective reconstruction;(2) making out the absolute conic images by using scene structure information, and then recovering Euclidean reconstruction from projective reconstruction.

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From the perspective of economics statistics , the author calculated marginal revenues between crop putout and its water quantity , putting forward spatial allocation on basis of marginal benefit equilibrium and different temporal allocation grounding on optimizing of irrigation rule .

對公共水資源在多個分區(qū)之間進行分配538视频在线免费观看，堅持可持續(xù)利用和基本用水安全的規(guī)則下黄页网站免费49vvcom，從經(jīng)濟學的角度利用統(tǒng)計資料計算經(jīng)濟作物用水邊際效益，提出基于水資源利用邊際效益的空間分配模型和灌溉制度最優(yōu)的時段配置模型精品国产免费污网站入口，利用大系統(tǒng)遞階協(xié)調(diào)理論国产无码专区视频，計算石河子地區(qū)水資源時空配置結果。

The main research tasks and results are as follows:(1) Through comparing the stress intensity factor of compact tension specimen calculated by finite element software with the theoretical value, the feasibility of calculating fracture parameters of crack tip in ABAQUS software was verified.(2) The relationship between the elastic modulus of the material and research scale was studied based on deriving the cohesive stress theory and other relevant theories. And the elastic modulus of the material on meso-scale was determined.(3) Global model and sub-model of the finite element were built in th...e macro-scale, and stress-strain field nearby the crack tip was analyzed, and the results show that the detailed stress-strain in the crack tip could be obtained by using the sub-model technique.(4) In meso-scale, the crack growth model was also established by assuming the crack propagating along the grain boundary, and the detailed stress-strain field in the crack tip was obtained.(5) The effect of crack length on Von Mises stress, and maximum principal stress and strain was analyzed in meso-scale when equivalent KI equals 30MPa.m1/2. And the results show that except for crack tip area, the stress-strain distribution in whole specimen is not affected.

主要完成研究內(nèi)容和取得成果如下：(1)利用有限元軟件計算出緊湊拉伸試樣的裂紋尖端應力強度因子KI值国产精av，其結果與理論值一致色婷婷综合在线，從而驗證了利用ABAQUS計算裂紋尖端相關斷裂參量的可行性；(2)在研究內(nèi)聚應力等相關理論的基礎上99久久99这里只有视频精品视频，推導出了研究尺度與材料彈性模量的近似關系国内激情网站，并確定了介觀尺度上的彈性模量；(3)在宏觀尺度上建立了全局有限元計算模型和子模型www,se，得到了裂紋尖端應力應變場分布在线免费观看95视频，結果表明利用子模型技術獲得比較準確的裂紋尖端應力應變場分布是可行的；(4)在介觀尺度上利用平均晶粒尺度的方式建立了裂紋沿晶擴展模型毛片A级黄片在线看，得到了裂紋尖端斷裂過程區(qū)的微觀應力應變場；(5)當應力強度因子為30MPa.m1/2時得得啪得得干得得射，分析了介觀尺度上在裂紋沿晶擴展過程中裂紋長度對Mises應力国产嫖妓视频一区二区、最大主應力和應變的影響，結果表明www日本免费观看，裂紋擴展長度對試樣整體應力應變分布影響不大1024在线观看精品视频，而對裂紋尖端區(qū)域有較大影響；(6)介图片区日韩欧美亚洲。黄色网站三级免费一品。。

Utilization status, existing major problems and development trend in future for sulphur resources in our country are introduced. The paper also puts forward to take pyrite resource as main raw material for producing sulphur acid, and developing large size suchniques needs to be imported, but a single series can be designed in home based on actual condition.

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The results are as follows: 1 great changes have taken place in land use and landscape pattern from 1995 to 2000; the area of woodland, water and unused land has been reduced and that of grassland, cropland and construction land increased; 2 the advance of fractal dimensions, the diversity index and landscape fragmentation degree showed that landscape units became strongly fragmented; 3 the dominant degree of construction and unused land has changed little but that of meadow and water increased, and that of farmland and woodland decreased to some extent, which indicated that the trend of landscape pattern changed from cropland and woodland to meadow and water; 4 the changes of land use and landscape patterns near the road are obvious and it is urgent to strengthen eco_environment protection.

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Nearly all the isolates were likely to utilize NZ amine, sodium acetate, sodium propionate and Tween-80, but potassium nitrate and sodium benzoate, sodium succinate, sodium citrate occurred with different strains.

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We first suppress the speckle by Frost filter,then detect line feature pixels to get potential road pixels.

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According to the status of groundwater exploitation and the existent problem in studying area, acting social and economic and environmental sustainable development, sustainable exploitation of water resource as a principle, and promoting the scientific and rational pattern of groundwater exploitation and countermeasure benefit for water resource sustainable and ecological environment protection in exploiting and developing water resource.

根據(jù)研究區(qū)的地下水開發(fā)利用現(xiàn)狀和存在的主要問題，以社會經(jīng)濟和環(huán)境的可持續(xù)發(fā)展、水資源可持續(xù)利用為原則国产精品igao视频网网站，確立了重點地區(qū)有利于水資源持續(xù)利用和生態(tài)環(huán)境保護的科學合理的地下水資源開發(fā)利用模式，并提出了有針對性的實際對策日韩精品一区二区免费暖暖。

By our methodology, every information exploitation behavior happened in networks is always associated with proliferating some information contents among the networks to a certain extent, so that some self-organized distributed patterns in terms of different information contents and different content granularities will be generated by a great number of radom information proliferations in the networks.

按照本文的信息利用模式，網(wǎng)絡信息利用行為總是伴隨著信息內(nèi)容在網(wǎng)絡中的擴散美女黄网址，網(wǎng)絡信息利用行為成為有后效的和相關的色本色网无码在线，從而導致不同信息內(nèi)容和不同內(nèi)容粒度的分布式的信息自組織結構，形成基于這種信息自組織結構的網(wǎng)絡信息利用模式人妻碰碰碰免费视频中文。