unstructured problem 中文意思是什麼

unstructured problem 解釋
不明確問題
  • unstructured : adj. 非正式[有系統地]組織起來的；鬆散的；自由的；開放的。
  • problem : n. 1. 問題，課題；疑難問題；令人困惑的情況。2. 【數、物】習題；作圖題。3. （象棋的）布局問題。adj. 1. 成問題的；難處理的。2. 關于社會問題的。
  1. For a class of quadratic finite element diseretization systems of an elliptic boundary problem with jump coefficients under the unstructured quadrilateral grids, we are concerned with two kinds of quadratic lagrangian finite element equations, by analyzing the relationship between the linear finite element and quadratic finite element basis functions, a hew amg method is designed

    摘要針對一類帶間斷系數的橢圓邊值問題，在非結構四邊形剖分下，討論了兩種二次拉格朗日有限元方程的代數多重網格法，通過利用雙線性元和二次元基函數之間的表示關系，給出了一種新的網格粗化演算法和構造提升運算元的代數途徑。
  2. We also compute naca0012 airfoil and certain three - foil flow field separately with explicit 4 - step runge - kutta scheme and the implicit lu - sgs scheme and results show the latter is much more efficient. in the end, the capability of the algorithm to deal with multi - bodies in relative movements is demonstrated by a dropping drank problem. it turns out that the unstructured overset grid is valuable and promising in practical application

    同時為了驗證隱式lu - sgs格式的收斂效果，我們對基於單塊網格的naca0012翼型與某三段翼型在不同的來流條件下，分別用帶隱式的lu - sgs格式與顯式的四步runge - kutta格式的解算器進行了數值模擬。
  3. An effective and well robust unstructured dynamic grid method is developed to solve the unsteady aerodynamic problem. on the basis of classic linear spring analogy, several modified methods for the linear spring stiffness coefficient is introduced

    在現有的經典線性彈簧方法的基礎上，通過對網格單元邊、面和體的考慮，引入了對線性彈簧倔強系數諸如抗拉、抗扭和抗壓等多種修正方法。
  4. But the nnd algorithm can " t reach 2 - order precision, and the cell - centred finite volume algorithm is not suit to solve hypersonic problem. for the efficiency of the four - stage runge - kutta time - stepping scheme is low, and the robust is bad for the hypersonic problem, an implicit time - stepping scheme is adopted. this scheme can preserve the results precision and improve the computing efficiency sharply, and is an innovation for the time - stepping scheme of unstructured grid

    為了解決目前傳統四步龍格一庫塔時間推進效率較低、計算高超聲速流場時魯棒性較差的問題，本文改進並採用了一種隱式時間推進格式，能夠在保證精度要求的情況下有效的提高流場計算時的計算效率，對基於非結構網格的時間推進格式有了發展和創新。
  5. Fist, the problem of robust stability for the uncertain linear discrete - time systems is studied where the uncertain matrixes are unstructured, highly structured, norm bounded and matrix polytope structured. the relevant conditions that the systems is robust stability are obtained using the characteristic value method, lyapunov function method and linear matrix inequality method. then we give some examples to prove

    分別針對具有非結構不確定性、強結構不確定性、矩陣多胞形結構不確定性和范數有界不確定性等線性離散系統，利用特徵值方法、 lyapunov函數方法和線性矩陣不等式方法等進行討論，給出了相應系統的魯棒穩定性判別條件，並通過算例進行了驗證。
  6. In a classroom composed of children from weak, uncertainty avoidance cultures we might expect to see students feeling comfortable in unstructured learning situations and students also being rewarded for innovative approaches to problem solving

    如果課堂上的小孩子兒童來源來自於低度不確定性規避文化，那麼將他們置於權利的學習條件水平下並獎賞那些發明性處理解決搞定疑問和問題的學生，這種方式會讓他們感到比較對比思考分析與判斷舒服。
  7. Many scientists present web matedata in order to slove the problem. web metadata can transform unstructured data into structural data

    為了解決這個問題，很多研究者提出了為web數據建立元數據，可將非結構化數據變成結構化或半結構化數據。
  8. The solution can choose the fittest learning objects for different learners to fulfill their demands, and it can navigate intelligently for the learners. firstly, the thesis introduces the development of e - learning, and analyses the problem of the resources heterogeneity and user needs personalization in e - leaning ; secondly, it introduces the technology and application of ontology and owl which is recommended by w3c latest, and brings up an elementary obtm ( ontology - based teaching model ) to support personal application. it also presents a mechanism of semantic expressing of heterogeneous teaching resources in order to establishe the foundation for the realization of semantic access and personal application to the unstructured teaching information ; next, based on obtm, the thesis creates pedagogical rules and semantic rules

    本文首先介紹了e - learning的發展現狀，並對e - learning中遇到的資源異構和用戶個性化需求的問題進行了分析;然後，對ontology與w3c最新推薦的owl本體描述語言的特點及應用分別進行了介紹，初步設計了支持個性化應用和描述的教學本體模型obtm （ ontology - basedteachingmodel ） ，給出了一種面向語義的非結構化教學資源的表示機制，為實現非結構化教學信息的語義訪問和個性化應用奠定了基礎;在obtm模型的基礎上，本文結合jena推理機制，制定了「個性化」的教學策略規則和語義策略規則，使系統可以利用本體推理技術實行教學內容和教學策略自適應控制。
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