拓撲邊界 的英文怎麼說
中文拼音 [tàpūbiānjiè]
拓撲邊界
英文
topological boundary-
Then, the associated search optimal algorithm based on virtual avl tree is promoted to rapidly reconstruct the half - edge topological structure. 3. to rebuild the tooth surface from the littery measure data, the membrane deformation algorithm based on loop subdivision is given to fit density triangle meshes to subdivision surface
前者巧妙、高效地完成了去除冗餘點的工作，將stl數據的存儲尺寸壓縮為原來的18 % 25 % ;後者完成了數據的半邊拓撲重建，使得后續對于邊界邊搜索、 1環鄰域搜索顯示出較好的優勢，實現了三角網格模型的快速拓撲重建。Method of inverse displacement analysis for hybrid twe pmts is a1so given. an analytical method, which is based on surface analysis, for workspace - analysis of 6 - sps type pmts is proposed in this dissertation. topological diagram of workspace for 6 - sps type pmts is derived, the equations of workspace boundny surfaces for 6 - sps type pmts are also derived based on the kinematic characteristic of the pmts
提出了一種求解6 - sps型並聯機床主進給機構工作空間的解析方法，該方法以曲面分析為基礎，通過分析得到了6 - sps型並聯機床主進給機構工作空間四川大學博士學位論文的拓撲邏輯結構圖，結合主進給機構的運動特性，得到了主進給機構工作空間邊界曲面的曲面方程。To completely avoid producing elements jointed at their corner nodes and checkerboard patterns, which frequently occur when the topology optimization of plane continuum is studied, the theory of topology analysis of plane continuum in topology optimization process and the simple algorithm for programming are studied. according to algebraic topology theory, the boundary of elements and plane continuum are operated as a one - dimensional complex. by use of the adjacency vector in graph theory, the structural topology is described and the topological operation is achieved on a computer. by above, the structural topological feature in the evolutionary process is gained. these methods are effcient and reliable. under topology constraints, according to the results of stress analysis, by deleting elements and moving nodes at the boundary, more satisfactory results can be gained by using a few numbers of elements and iterations. to demonstrate the efficiency of these methods, solutions including some well - known classical problems are presented
避免目前平面連續體結構拓撲優化過程中經常出現的單元鉸接以及「棋盤格」等現象，研究了連續體結構拓撲優化過程的拓撲分析方法，以及在計算機上實現的簡便演算法.根據代數拓撲理論，單元及連續體的邊界作為1 -復形進行運算.利用圖論中的鄰接向量概念，在計算機上實現了結構的拓撲描述及拓撲運算，得到了結構在拓撲演化過程中的拓撲特性，方法簡單、可靠.在一定的拓撲約束下，根據應力分析結果，採用刪除單元、單元退化、移動節點等方法，可以用較少單元得到更為滿意的結果，提高計算效率.為演示方法的有效性，給出幾個包括常見經典問題的解答This new method has the capability of calculating complicated 3d grain burning surface. dealing with evolving interface of complicated material and topology change ( splitting. breaking. merging ), based on level set method and burning surface process law. this technique can get accurate area of burning surface each moment and data of geometrical structure that provide access to examination of grain change in the srm working process. 2
結合固體火箭發動機燃面推移規律，在等值面函數法基礎上開發的裝藥燃面演算法能夠成功計算任意復雜三維裝藥燃面，並且具有處理復雜物質邊界及其拓撲結構發生變化（如分裂、破碎、合併）的能力，能夠準確計算出發動機工作過程中各個時刻裝藥的燃燒面積，同時輸出裝藥幾何構形數據直觀地觀察裝藥的變化情況； 2Basing on them, we propose a new algorithm of removing pseudo elements by which we can ensure the candidate edge generated by the broken line in 2d views is pseudo element if it is inside of the face which can be seen completely. at last delete other pseudo elements by the topological information of former methods. 2. for the low efficiency and bad capability of disposing multi - solutions of the decision - making after generating face loops, we thoroughly analyzed the former divide - conquer algorithm and decision - chaining algorithm
以這些定義和定理為基礎，提出了新的假元刪除演算法，通過判斷視圖中的二維虛線邊所生成的候選邊是否在完全可見有界平面內來判斷該候選邊是否為假元而將其刪除，再結合前人的成果利用三維拓撲信息刪除其它假元，從而降低了面環的生成數目和決策求解的搜索空間，提高了三維重建的效率。Test result of bgp ( border gateway protocol ) indicates that this algorithm can adapt different network topologies, and the test cases created by the algorithm can effectively reduce test costs
對邊界網關協議進行測試的結果表明，所提演算法能適應不同的網路拓撲環境，其生成的測試用例在測試中能夠有效降低測試代價。So as to deal with this problem, local b - spline surface designing method with complicated trimmed boundary constraints is advanced. for two neighboring surfaces, we first trim a belt along the common boundary and then bridge a b - spline surface between these two trimmed surfaces with a smooth blending. with respect to the comer area comprised of several adjoining surfaces, a rectangular region covering the comer area is obtained by trimming operations at first, and later a local b - spline for filling the rectangular region is completed through interpolation or approximation
在兩張相鄰的曲面之間，先在其公共邊界處裁剪出一個帶狀區域，然後再採用曲面搭接的方式實現曲面之間的光滑過渡；而在鄰接曲面的公共角點處，先在該角點附近區域裁剪出一個矩形拓撲域，然後運用插值或逼近的方法，設計出一張既滿足於該區域的邊界條件同時又插值或逼近內部采樣點的b樣條曲面。On one hand, in grain regions of films, the strong inter - duster interaction, mentioned as mean field, leads to the colossal magnetoresistance effect ( cmr )
與此同時，薄膜的拓撲形態分為顆粒區域和顆粒邊界區域。在顆粒區域內，小聚集體之間具有強關聯耦合作用，是這種非均勻體系龐磁阻效應的成因。In chapter three, we propose a mesh fusion algorithm base on variational implicit surface. by constructing a transition object between the objects to be fused, this method overcomes the topological restrictions
該方法通過在待融合物體間構造過渡物體，實現了待融合物體邊界拓撲不相同情況下的網格融合。By the application of topological polygon data model, the graphic breaking up method was proposed to realize the parent region auto - dividing into child region and auto - merging the divisions into the whole region step by step based on region and boundary code
應用基於拓撲關系的多邊形數據模型，提出以小班邊界與多邊形編碼為基礎的圖形分割方法，實現了小班區劃過程數據的逐級分割以及區劃結果的逐級合併匯總。The perimeter firewall can work well only in those networks with a single entry point and small amount of hosts
邊界防火墻依賴網路拓撲結構，只適用於網路拓撲結構簡單，規模較小，而且內部比較安全的網路。Simply state, topology optimization consists of determining the best arrangement of a limited volume of structural material within a given spatial domain so as to obtain the optimal mechanical performance of the concept design
拓撲優化是指確定結構單元、節點及內部邊界的空間連接方式。其要求結構工作性態良好，結構物有較高的安全度和可靠性。We study the relationships between the rough sets and the topological space, define the interior operator and the closure operator generated by a subbase of a topological space, which are conjugated with a lower approximation and an upper approximation, and obtain their basic properties
摘要本文研究粗糙集與拓撲空間的關系，統一地使用拓撲空間中的集合關于子基的內部和閉包來研究粗糙集理論和覆蓋廣義粗糙集理論中的下近似集和上近似集，以及由它們導出的關于子基的開集，導集，閉集，邊界。分享友人