極平投影 的英文怎麼說
中文拼音 [jípíngtóuyǐng]
極平投影
英文
gnomonic projection-
The first one : fitting together ultimate values of every dimensions in one dimension - chain one by one, educing many equations by itself, calculating results, and comparing these results of close dimension to find maximal and minimal values. the second one : projecting all dimensions on two preestablished axis, then providing the solutions to analyze whether every projected dimensions is increscent or decreasing, and synthesize the effect of every projected dimensions to close dimension, educing many equations by itself, at last calculating the result of close dimension. the third one : according to monte carlo analysis, getting every dimensions " values from every dimensions " tolerances at random time after time, simulating the actual circumstances of mass production using these dimensions, and calculating reasonable results of close dimension economically
鑒于這類系統在各大中小型企業的廣泛應用與相對滯后的研究水平，本文提出了三種新的能切實地解決目前尺寸鏈計算機輔助分析解算中存在的各種難題的設計方案，第一種方案將尺寸鏈中各組成環能取的極值組合起來，自動列方程組，求解每個組合情況下的封閉環尺寸，最後比較這些結果，得出封閉環的最大最小值；第二種方案將尺寸鏈各組成環向預先設定好的兩個方向投影，之後再分析各尺寸環投影分量的增減性，並且提供了組成環兩個方向上的投影分量增減性不一的復雜情況下的解決辦法，綜合組成環各投影分量的增減性，然後自動列出方程組，最後根據各組成環的投影分量以及所列的方程組來確定尺寸鏈封閉環的尺寸；第三種方案以蒙特卡洛法為原理，在尺寸鏈各組成環的取值范圍內使用計算機產生大量隨機數，模擬實際大批量生產中的零件尺寸分佈情況，以更經濟更合理的方式分析、計算封閉環尺寸。The stereographic projection must be supplemented by other constructions.
赤平極射投影還要有其他的作圖方法加以補充。This rotation can be simplified by plotting the positions of the principal sections and principal axis on a stereographic net as described by jessop and wells from the rotations recorded.
按照傑索普和威爾士所論述的方法，根據記錄下來的轉動角，把主截面和主軸的位置畫到一個極射赤平投影網上，可使上述過程簡化。By studying the geometry relationship among the corresponding points on three different projective planes based on epipolar geometry, it obtained the trilinear tensor constraining corresponding points of different view
該方法在極線幾何的基礎上，通過研究物體在3個不同透視投影平面上對應點之間的相互關系，得到描述不同圖像上對應點關系的一個三線性張量。The results indicate : the rural households " agri - productive investment behavior are generally affected by such factors : the rural households " basic family status, the rural households " owning resource, market terms, the different geographical environment and the external economy environment if other factors remain unchangeable, the rural households would increased their agri - productive investment scale in the next year by such terms : the rural households " family size get bigger, the rural households improve the educational level, the rural households decrease the opportunity in working in the second or the third field, the family agricultural opening revenue got increased last year, the rural households " productive capital assets got increased last year
假定其他因素不變：農戶家庭規模越大，勞動力文化水平越高，農戶非農業就業機會減少，農戶上一年農業家庭經營收入提高，以及農戶上一年生產性固定資產增加，都會使農戶在下一年增加農業生產性投資；同時由於農戶處于不同的地理環境、位置，也對農戶進行農業生產性投資產生影響。同時本文對北京市政府制定相關農業政策提出以下建議參考： 1 、進一步穩固農戶投資主體地位，同時，積極引導財政支農資金、銀行貸款等其他投資形式向農業轉移，形成資金互補機制。On the basis of appraising a traditional method, the method of the stereographic projection and proportionally stereographic projection of a solid volume, this paper has introduced such methods as determination of dominant discontinuities, kinematic tests for rock - mass failure modes, geometrical judgment of a removable block, and determination of a key block, extending perfecting the traditional method, and thus making it has better suitability or availability and practicality
摘要本文在評價用傳統方法即赤平極射投影和實體比例投影方法分析節理邊坡穩定性的基礎上，結合具體工程實例引進了優勢結構面的確定、巖體破壞模式的運動學判釋、可移動塊體的幾何判定和關鍵塊體的確定等方法，使傳統方法得到拓寬和完善，從而具有更好的適用性和可操作性。A polar projection of half or more of the celestial sphere on a chart equipped with an adjustable overlay to show the stars visible at a particular time and place
星座一覽圖天體球的一半或多半在平面圖上的極投影圖，這種圖具有可調節的遮蔽物以顯示在給定時刻和位置可見的恆星Stereographic technique is used in the analysis of the footwall slope in the open - pit of bangmoshan iron mine. the slope fracture mode and the slipping direction of unstable blocks are given and the stable slope angle is calculated to be 46
運用赤平極射投影的方法，對棒磨山鐵礦露天采場下盤邊坡進行了穩定性分析，給出了邊坡破壞模式和不穩定塊體的滑動方向，並推算穩定邊坡角為46 。According to the geological data which was gained by exploration investigation, establishing a geological model which can reflect rock mass characteristics ; with analyzing the internal and exterior factors synthetically, the deformation and possible failure mechanism and mode of the cut slopes was confirmed which combines with stereoic projection and other techniques ; the stabilities of the 14 high slopes are estimated synthetically by applicable design codes and guidelines. with the estimate result and some other analysis methods, the rock mass mechanical parameters of slope are identified ; as a results, 14 high slopes fall into 4 categories based on rockmass characteristics and discontinuities. the stability and deformation of some typical slopes was analyzed with distinct element method by udec ; the safety factor of some dangerous slopes are calculated by rigid limiting equilibrium method for comparison
首先著重研究影響邊坡穩定性的內在因素，主要是通過地質勘探、測量、現場觀測等手段取得研究區地質體的基礎地質資料，建立起能夠反映地質體結構特徵的地質模型;隨后綜合分析潛在的內外部影響因素，並結合赤平投影對邊坡可能的失穩模式或破壞機製作出判斷;運用已有巖體質量分類方法對沿線14個高陡邊坡穩定性進行初步的評價，並結合試驗研究、經驗判斷、工程類比等手段確定了坡體的巖體力學參數;根據穩定性初步評價結果將研究區14個高陡邊坡按開挖方式分為4大類，並利用離散元程序udec對各類典型高陡邊坡進行了穩定性計算分析;對潛在危險邊坡利用剛體極限平衡法求出了不同工況下的安全系數。During 1970s and 1980s, cpusa took an active part in labor movement, peace movement, the youth movement. minorities movement and ran for president
在70 、 80年代美共積極投身於勞工運動、和平運動、青年運動、少數民族運動，積極參加竟選活動，其影響和實力都有所恢復。These factors are physical capital, human capital, technology change, the level of specialization and the quantity of farmers. furthermore, on the basic hypothesis that farmers are rational economic men, it points out the negative attitude of farmers on improving these factors is rational choice. the actual land system, social security system and hukou system conduce that the property right of land is instable and difficult to be exchanged, the quantity of farmers is unable to decrease
本文首先建立了一個簡單的數學模型，考察了直接影響農民農業收入的基本因素，包括：物質資本、人力資本、專業化水平、技術知識和農民數量；進而，從農民是理性經濟人的基本假設出發，指出農民在改進影響農業收入的諸因素方面的消極態度是既定製度約束下的理性選擇? ?現行的農地制度（社會保障制度） 、戶籍制度導致土地產權不穩定、難以流轉和農民數量難以減少，妨礙了土地的規模經營，使農民在物質資本投資、人力資本投資、深化專業化分工、學習和應用技術知識、向城市轉移勞動力方面表現出消極態度。Prolonging patent grand period will discourage enthusiasm of applying patent protection, waste duplication of investment and reduce social surplus ; shortening patent grand period will weaken level of technology innovation, reducing social surplus in the end
專利授權期過長，弱化企業創新成果產權化的積極性，增加重復投資，減少社會剩餘；專利授權期過短，缺少技術創新的動力，技術創新水平不高，最終影響社會剩餘。There exist two kinds of sources, which have caused current inequality of opportunities hi education. for one thing, it is outwardly influenced by the backwardness and unbalance of present economic and cultural development, which consists of the remaining and extreme trend of dualistic pattern of economy and society, lack and unequal distribution of national expenses of education and former culture. for another, it is inwardly affected by competitive examination of systematic education and elite education and increasing unhealthy elements in a microcosmic way
造成目前我國教育機會不均等現狀的根源，從教育外部來看，在於現階段經濟、文化發展水平的落後與不平衡，特別是二元經濟社會結構的留存及其益發兩極分化的趨勢，國家教育經費的滯后投入和不均衡分配，以及舊文化因素對人們的觀念影響；從教育內部來看，則在於制度化教育、英才教育的競爭性考試和在微觀上一些不健康因素的滋生。Computer programming realization of the projection figure of pole point on equator plane of cubic crystal system plane
面極射赤道平面投影圖的計算機實現Firstly, unlike the factorization - based methods that minimize the svd ( singular value decomposition ) re - projection error, the method uses the minimization of mean 2d re - projection error of projective points as a criterion, therefore it has a clearer physical meaning and enhances the accuracy of projective reconstruction results
該方法以全局性極小化射影三維空間點的二維反投影誤差平方和為準則，相對于縮小svd反投影誤差的方法，具有更為明確合理的物理意義。In this paper, i will present some algorithms of polyhedral visual hull reconstruction : ( 1 ) polyhedral v isual h ull generation a igorithm b ased one dge - pool - searching, which constrains the 3 - d intersections into the 2 - d planes intersection via the epipolar theory to reduce the complexity a nd c an r educe t he t imes f or c ones t o b e p rejected o nto t he i mage p lanes, i n which we induced the index list to every points on the surface of object, and connected the related points to get sub polygons on surface and in turn get the mesh model, we replace triangulation process of disordered points cloud by edge - pool searching. ; ( 2 ) reconstruction based on degenerated - polygon - intersection, which have the following improvements on traditional bull intersection : using degenerated polygon to orga nize intersected area on cone face, which may be discontinuous ; a fast intersection algorithm of polygons on the cone face based on degenerated polygons, which is consistent between the continuous polygons and the discontinuous ones. the intersection of degenerated polygons is similar to the convergence of two ordered lists, which is comparably simple to the bull operation ; ( 3 ) reconstruction algorithm based on ray - tracing, in which all the rays that run through the vertex on silhouette of object will intersect with all the cones correspondent to other silhouette, and we have to calculate the intersection of all such line segments, the endpoints of which are considered to lie on the surface of object and we will get the point cloud on the surface of object
同時利用共極線原理把三維計算投影到二維平面以降低求交計算的復雜度，該演算法可以減少光錐向圖像平面投影計算的次數，以邊池搜索取代散亂點集上進行的三角剖分； （ 2 ）基於退化多邊形求交的多面體可見殼模型重構，系統引入退化多邊形的概念，把錐體平面的交集中不連通的部分用一個退化多邊形來表示，並引入了新的基於退化多邊形的求交演算法，與傳統多面體可見殼重構相比，該演算法有以下幾點創新：在圖像平面以退化多邊形組織投影錐體和物體輪廓的交集，把任意錐面與物體輪廓的交集歸一到一個退化多邊形；基於退化多邊形的二維平面上多邊形快速相交演算法，該演算法在一定程度上就是兩個有序鏈表的合併，大大簡化了先前的布爾求交計算； （ 3 ）基於光線跟蹤的演算法，該演算法中所有通過輪廓頂點的光線和對應其它圖像輪廓的光錐進行求交計算，最後得到每次求交計算得到線段的交集，該線段的頂點就認為是物體表面點，從而得到物體表面的點雲。Camera model is established above all. some methods of camera calibration, the epipolar geometry constrain and various computational techniques of fundamental matrix are systematically analyzed and compared in this thesis. we present a camera calibration algorithm by viewing a plane using reprojection
論文首先建立了攝像機模型，分析比較了幾種不同的攝像機定標方法、極線幾何約束關系和基礎矩陣的多種計算方法，提出了一種結構再投影平面模板攝像機標定演算法。After analysising the five factors ( schedule, quality, investment, claim, risk ) which influence the limit point, this paper presents that the clients should decide the time for the construction in accordance with their own characterististics and utilizing benefits, and decide the project quality according to the sum of purchasing costs ( the price of contracts ) and the utilizing costs ( the costs to run and maintain ), and make it most possible to use supervisim optimal design and construction and to reduce claim and risk, which gives the clients a satisfying project with minimal investmentat the same time, this article tells the contractors how to optimize and make decision to minimize the costs in practice on the basis of meeting the requirment of the clients
在分析了影響極值點的進度、質量、投資、索賠和風險五大因素之後，提出了業主應結合自身的特點，根據工程使用效益來決定工期，根據購置成本（即合同價格）和使用成本（即運行費和維護費）之和來決定工程質量水平，並盡可能通過監理來優化設計、優化施工，減少索賠和風險，使業主最終既能得到滿意的工程，又能使總資金投入最小。同時，也指出承包商應如何在滿足業主要求的前提下，進行優化和決策，使實際發生的成本最小。There are four positive influences after it is transformed from production type to consumption type : 1st, to influence directly the proportion of enterprise ' s equipment invest, thus to influence the assets ' organic component and production ' s scientific and technical content decisively. 2nd, fixed assets construction period can be shorted though profit driven system. 3rd, to lower invest cost of fixed assets, then to lower manufacture cost of product. 4th, to give enterprise a balanced taxes and duties environment to compete
當增值稅由生產型改為消費型后，將產生四點積極影響：一是對企業投資中設備投資的比例產生直接影響，從而時資本的有機構成和產品的科技含量產生決定性影響；二是通過利潤驅動機制，縮短固定資產建設周期；三是降低固定資產的投資成本，繼而降低產品的製造成本；四是使企業在公平的稅負環境下展開競爭。First, the elements of the image navigation are analyzed and the coordinate systems are defined. with projection relation of perspective projection and epipolar geometry considered, essential matrix is derived
考慮導航相機採用透視投影模型時的空間點在像平面上的投影關系，結合極線幾何的性質，給出了本質矩陣的定義式。分享友人