local constraints 中文意思是什麼

local constraints 解釋
局部條件的限制
  • local : adj 1 地方的，當地的，本地的。2 局部的。3 鄉土的，狹隘的，片面的。4 【郵政】本市的，本地的；【鐵...
  • constraints : 變動極限
  1. Other relevant site specific factors such as site constraints, local traffic condition and convenience to passengers will also be considered

    其他個別地點特有的相關因素，例如現場環境的限制、附近的交通情況及對乘客的方便程度，亦會加以考慮。
  2. The main work of this paper was as fellows : ( 1 ) generalized the development of pre - stressed steel structure in our nation and abroad, and pointed out the main problem in practice ; ( 2 ) presented the mechanism of pre - stressed steel structure and revealed its applicable range ; ( 3 ) established the optimization design model for pre - stressed steel structure, which accounts for constraints on stresses and displacements of structure ; ( 4 ) brought forward the optimization design method, which combined linear programming and the principle of full restriction, through which we can obtain the magnitude of each time pre - stress and the optimized sections of each members of structure ; ( 5 ) analyzed the best times of pre - stress and pointed out that 2 ~ 3 times is preferable ; ( 6 ) conducted optimization design on large - space steel roof, horizontal parallel steel truss with local cables, horizontal parallel steel truss with global cable, and ultra - static steel truss, the result of which indicated that the multiple pre - stress structure is very economic ; ( 7 ) compared different schemes of cable placement for horizontal parallel steel truss, and the results showed that the local cable only unloaded the second girders, but had no response on the first girders and stomach poles, while global cable could unload the second girders and the stomach poles outside of turning point of cable, thus proving that global cable is more economic than local - cable

    本文的主要工作是：對國內外預應力鋼結構的發展歷史及現狀作了綜述和總結，指出當前預應力鋼結構工程實踐中存在的主要問題；闡述了預應力鋼結構的受力機理，並指出預應力鋼結構的適用范圍和特點；在考慮結構應力和變位約束的條件下，建立預應力鋼結構優化設計模型；提出多次預應力鋼結構優化設計方法和步驟，採用線性規劃和滿約束準則相結合的優化方法，可優化設計出施加的每一級預應力的大小，並得到結構各部分的優化截面；對多次預應力最佳的施加次數作了分析，並建議以2 3次為宜；為驗證文中理論和方法，分別對大跨多次預應力鋼屋架、局部布索的水平平行弦鋼桁架、整體布索的水平平行弦鋼桁架和局部布索的超靜定鋼桁架等算例進行了優化設計，經濟效益明顯；對水平平行弦鋼桁架的幾種施加預應力的方案進行比較，對于局部布索，預應力只對下弦起到卸載作用，對上弦和腹桿基本不起作用；而整體布索預應力除對下弦卸載外，對索折點以外部分腹桿也起到卸載作用，經濟效益好於局部布索。
  3. Once street waste and waste from households has been collected it is taken to any of the network of 2 866 refuse collection points ( rcps ). different types of rcps are provided to meet local needs and site constraints. they include 158 permanent off - street rcps, 97 temporary rcps, 810 village - type rcps, and 1 801 bin sites

    本署共有2866個垃圾收集站，包括不同的類型，是因應區內的需求和實地環境的限制而設置的，包括158個永久離街垃圾收集站、 97個臨時垃圾收集站、 810個鄉村式垃圾收集站和1801個垃圾桶放置處。
  4. Once street waste and waste from households has been collected it is taken to any of the network of 2 866 refuse collection points rcps. different types of rcps are provided to meet local needs and site constraints. they include 158 permanent off - street rcps, 97 temporary rcps, 810 village - type rcps, and 1 801 bin sites

    本署共有2 866個垃圾收集站，包括不同的類型，是因應區內的需求和實地環境的限制而設置的，包括158個永久離街垃圾收集站97個臨時垃圾收集站810個鄉村式垃圾收集站和1 801個垃圾桶放置處。
  5. According to the particular characteristics of cad modeling in reverse engineering and the practical demands from customers, the author made an elaborate and in - depth study on b - spline surface reconstruction in three aspects, including b - spline surface fairing, local b - spline surface designing and b - spline surface approximating based on complicated boundary constraints

    本文結合反求工程cad建模自身的特點和用戶的實際需要，主要對b樣條曲面造型三個方面的工作做了較為細致和深入的研究和探討： b樣條曲面光順、 b樣條曲面局部設計和基於復雜邊界約束的b樣條曲面逼近。
  6. 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。
  7. Optimization of complex systems is often characterized by large scale, complex constraints, high nonlinearity and multiple local optima

    優化技術是一門重要的科學分支，在許多工程領域得到推廣和應用。
  8. 3. from global to local optimization, hierarchical decision is effective to make a better system decision, which will be helpful to find the constraints of supply chain in the course of decision

    本文中的決策模型按照從系統整體優化到局部優化分層的方式進行決策，有助於在決策過程中發現供應鏈中存在的制約因素。
  9. Contents include : overall mission, vision, objectives, requirements definition process, available strategic options, local market opportunities and constraints, key al area risks, steps to developing al area strategic plans, role of government and other partners, initial budget, initial staffing plan

    內容包括：總體任務、設想、目標、需求確定過程、可利用的戰略選擇、當地市場機會和不利因素、主要職能領域風險、職能部門戰略計劃制定步驟、政府和其他合作夥伴角色、初期預算和初期員工招募計劃等。
  10. The bar sectional sizes are optimized to make the weight of the structure minimized under constraints of stress, displacement and local stability. at the second step, supposing the active displacement constraints of the first step keeping unchanged. a quadratic programming model that increases the structural rigidity is solved

    求解時分為兩層，第一層在給定節點位置下對桿件截面進行優化，同時考慮了應力、局部穩定約束和位移約束的重量最輕；第二層假定截面層的有效位移約束作用不變，求解一個使桁架剛度增強的二次規劃問題，獲得既不違反約束，又使目標函數不上升的新的節點位置，再返回第一層。
  11. The stress and local stability constraints are transformed into movable lower bounds of sizes. an inverse variable xt = ? is inducted, and the objective function is expanded as second order taylor approximation while the displacement constriction is expanded as first order taylor approximation. the lemke algorithm is used to get the final design result

    把復雜的應力約束和局部穩定約束轉化為動態尺寸約束，引入倒變量x _ i 1 / a _ i將目標函數展開為二階近似，將位移約束用莫爾積分化為一階近似，用對偶規劃方法將原問題化為等價的二次規劃問題，調用lemke演算法，求得最優設計結果。
  12. In this paper, by using cost functions of flights, a model is presented to schedule aircraft landings, which satisfies the landing intervals and separation constraints, and puts forward a heuristic algorithm by using local search and linear programming

    利用航班的成本函數，建立了滿足著陸間隔、著陸時間段等約束的著陸規劃模型，提出了一種使用局部搜索和線性規劃的啟發式演算法。
  13. The holistic features are extracted by principal component analysis ( pca ), and the local features are extracted by non - negative matrix factorization with sparseness constraints ( nmfs )

    首先通過主元分析演算法（ pca ）提取全局特徵，利用帶稀疏限制的非負矩陣分解演算法（ nmfs ）提取局部特徵。
  14. In this approach, design tasks are decomposed into a system - level optimization and subsystem - level optimizations. the task of each subsystem optimization is to find the local variables to minimize or maximize objectives, subject to its local design constraints. the task of the system - level optimization is to find global ( or shared ) and auxiliary variables to optimize the system performances, and satisfy the consistency constraints

    這種方法將優化流程分為系統級優化和單學科優化兩個層次:系統級優化的任務是通過調整共享設計變量和輔助設計變量，在滿足一致性約束條件下，使系統目標最優;子系統的任務是調整局部設計變量，在滿足本學科的設計要求條件下，使子系統的目標最優。
  15. Chapter 2 establishes the theoretical framework of a class of dual algorithms for solving nonlinear optimization problems with inequality constraints. we prove, under some mild assumptions, the local convergence theorem for this class of dual algorithms and present the error bound for approximate solutions. the modified barrier function methods of polyak ( 1992 ) and the augmented lagrange function method of bertsekas ( 1982 ) are verified to be the special cases of the class of dual algorithms

    第2章建立求解不等式約束優化問題的一類對偶演算法的理論框架，在適當的假設條件下，證明了該類演算法的局部收斂性質，並給出近似解的誤差界，驗證了polyak （ 1992 ）的修正障礙函數演算法以及bertsekas （ 1982 ）的增廣lagrange函數演算法都是這類演算法的特例。
  16. Owing to space constraints of some local farms, the hatcheries do not necessarily have to be located on farms

    由於一些本地雞場的面積所限，孵蛋場無須設于雞場內。
  17. Whereas our urban - tree population shares many common features with those of other cities, we do have our unique environmental constraints and development history. rather than borrowing directly from other evaluation schemes, an independent methodology has been designed to suit the local circumstances

    雖然我們市區的樹木擁有類似於其他地方城市樹木的特點，但礙于香港獨特的發展歷史和環境因素，與其直接采納他人的標準，倒不如設計一套更適合香港市區環境的方法。
  18. Third, for the problem of the stress, local stability and displacement constraints, the sequential quadratic programming ( sqp ) method is adopted in this paper

    第三，對于應力約束、局部穩定約束和位移約束的問題，本文採用序列二次規劃sqp方法進行了求解。
  19. The specific local situation, the existing vegetation and building fabric, climatic and topographical factors, and the range and availability of ecologically sustainable forms of energy seen in relation to the duration and intensity of their use, as well as local constraints, all have to be analysed and evaluated as the basis for each individual planning project

    具體地方情況，現有的植被和建築肌理，氣候和地形學因素和生態學上能承受的能量的形式的范圍被認為和他們的使用的持續性和強度有關，並且地方限制，所有的這些因素必須被分析和被評估作為為每個個體計劃項目的依據。
  20. The constraints described are a bit like one might find in a " random walk " algorithm, with the end condition resembling a " statisficing " or " local minimum " result - but certainly the requirements are simpler than most real - world ones

    上述的約束有點象可以在「隨機遍歷」演算法找到的約束，結束條件類似「統計」或「局部最小值」結果但當然，這要比大多數現實世界中簡單。
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