rational curve 中文意思是什麼
rational curve
解釋
特性曲線-
And it can be divided into four phases of urban tourism of china, in which there are different characteristics. ( 2 ) the evolutive rules of urban tourism of china are as follows : 1 ) the exoteric extent of tourism notion is more and more swell ; 2 ) the form of urban tourism renovate with the development of cities ; 3 ) the layout of urban tourism inner and outer is from close and complanate to exoteric and tridimensional ; 4 ) the sustaining system of urban tourism is from absent to as clear as a bell, and will reach a rational and advanced extent. 5 ) the social delamination of urban tourism is form stern to syncretic ; 6 ) the evolvement tendency of urban tourism should be generalized as a curve of accumbent " s ", which present a course makes up of low - grade development, high - speed development and balanced development
主要觀點歸納如下： （ 1 ）城市旅遊是基於城市的發展而發展的，中國城市旅遊可分為古代、近代、現代和后現代四個階段，分別對應於前工業文明時期的城市旅遊、工業文明萌芽時期的城市旅遊、全面建設工業文明和后工業文明因素初露端倪時期的城市旅遊，以及邁向信息時代的城市旅遊，其間體現出不同的城市旅遊發展特徵； （ 2 ）經歷不同發展的時期，中國城市旅遊表現出如下的演進規律： 1 ）城市旅遊觀念開放程度逐漸增強，對城市旅遊的容納度日趨加大，對城市旅遊地位的認識從忽視到關注再成為生活的必要因素； 2 ）旅遊形式從單一走向多元，新的旅遊形式隨城市發展層出不窮； 3 ）城市旅遊的內外部空間聯系從封閉平面走向開放立體，達到網路化、連綿化、分區化、立體化布局； 4 ）城市旅遊支持系統從缺失走向健全，達到理性高端； 5 ）城市旅遊社會分層從森嚴走向融合，經歷了「小眾旅遊」 、 「大眾旅遊」 ，最終發展到「全民旅遊」 ； 6 ）城市旅遊產業演變態勢可以概括為一條橫臥的「 s 」曲線，表現為低開?高走?平穩發展。 -
Interpolating g2 continuous closed curve with rational conics
2連續閉曲線插值 -
Then the measured frequency characteristic can be converted to high accurate transfer function with curve fit method, rational initial parameters choice and fitting in different frequency range method
使用曲線擬合方法，輔助以合理的初始參數選取及分段擬合方法，將測量得到的控制對象頻率特性轉化為高精度的傳遞函數。 -
The simulated test of the mechatronics soft start equipment is made regarding the experimental platform of belt conveyor as load, the sensor design is had for selecting type, the testing datum are gatherd and analyzed, the rational curve of velocity in the starting and braking progress are gained, the best matching ratio of driving power for the double asynchronous moters is found
以帶式輸送機實驗臺為負載進行了機械電子式軟起動裝置的模擬試驗，對傳感器進行了選型設計，對試驗數據進行了採集與分析，確定了合理的起、制動速度曲線，求出雙電機驅動功率的最佳配比。 -
In this paper, it s applications were explained from seven different fields, the common zeros of two polynomials, the multiplicities of roots and the discrimination of a polynomial, searching the equations suitable for a algebraic number, implicating a rational curve over the plane, computing the zeros of a nonlinear algebraic equation and gathering the discrimination surface of the sas in automated theorem proving on inequalities
本文從7個方面闡述了結式的應用，包括判斷2個多項式的公共零點，判定多項式是否有重根，計算多項式的判別式，尋找代數數滿足的方程，平面有理曲線的隱式化，非線性代數方程組求解和不等式機器證明中半代數系統邊界曲面的獲得等。 -
Another algorithm is based on pixels : sample many points along the curve, round them to the nearest integer and set each pixel the computed point falls in. although this algorithm uses integer arithmetic, it provides the smooth curve possible at the expense of computation time as many points have to be computed to ensure that no gaps are created along the curve. furthermore these two algorithms we mentioned above is appropriate for low degree parametric curves, for high degree parametric curves, we usually approach them by using low degree rational parametric curves, the generating curve ' s fairness property is not very good
我們知道當節點矢量的兩端節點均為k重節點且無內節點時， b樣條基函數退化為bemstein多項式，因此該生成演算法還可推廣到b能ier曲線中，具有廣泛的應用價值、同樣地，在cad和cagd中，有理b樣條曲線，特別是非均勻有理b樣條曲線（ nurbs ）已經成為曲線曲面設計中最廣為流行的技術，然而對這些曲線目前也尚無很好的曲線生成演算法，因此有理b樣條曲線的生成演算法無疑有著更重要的意義 -
Thirdly, the spatial cylindrical helix is approximated by rational triangular bezier curve in cylindrical coordinate system
再次，建立柱坐標系，給出圓柱螺線的三角有理b zier表示。 -
But the paper prove that adaptive expectations could not leads to the natural rate hypothesis by a simple model, in contradiction, these two hypothesis are conflict. if incompletely expectations is the unique cause of prices rigid, that only the rational expectations hypothesis comes to the natural rate theory. ultimately, gave the lucas supply curve include the rational expectations
但本文通過一個簡單的模型分析表明，適應性預期不可能導出自然率假說，相反，這兩個假設是矛盾的。如果不完全預期是價格剛性的唯一原因，那麼只有理性預期假設導致自然率理論。最後，給出了合理性預期的盧卡斯供給山線。 -
The result shows that the sufficient and necessary condition of the quadratic rational b - spline curve ' s curvature monotony is similar to the quadratic rational bezier curves ", but its condition is some different from the quadratic rational bezier curves " curve ' s rendering algorithm is an important content in computer graphics, cad
曲線的生成演算法是計算機圖形學的重要內容。對於一些基本曲線，如直線，圓，橢圓等，都有快速生成演算法，如畫直線的bresenham演算法， dda演算法，畫圓的bresenham演算法，中點法，正負法， pitterway的橢圓及拋物線繪制演算法等等。 -
Under this circumstance, our treasury bond market exits lots of shortfalls which impede further development for this market. in this essay, combining with the experience in developing country " s experience, it analyses some challenges which confronted chinese bond market, such as liquidity in the interbank market has yet to be improved, duration in bond products are yet to be rational, a sound yield curve is yet to be take shape, the separation between exchange and interbank yet to be broken. in order to solving above issues, this essay suggests that it should develop market maker system to increase market liquidity ; manage balanced treasury bond ; issue short and long term treasury bond in proportion to improve duration and yield curve ; develop bond derivative products such as future trading, open style repurchasement, so it can provides tools for risk protection
但隨著我國經濟的快速發展，金融市場已今非昔比，中國成為了世貿組織的成員，中國資本市場要走向國際化，利率的市場化是大勢所趨，在此前提下，我國國債市場還存在著很多不足，越來越阻礙著國債市場的進一步發展，本文結合世界發達國家的先進經驗，剖析了我國國債市場存在的一些問題如：流動性有待改善、國債期限結構不合理、無法形成科學合理的益率曲線、交易所市場與銀行間市場割裂等，為解決這些問題，本文建議應發展做市商制度以提高市場流動性；實施國債余額管理，發行短期國債及長期國債，改善國債期限結構，以形成科學合理的收益率曲線；發展債券衍生金融創新工具如國債期貨交易、開放式回購等，為投資者提供避險工具等等。 -
In fact, rational quadratic bezier curve is just a special form of rational quadratic b - spline curve, the condition of quadratic rational b - spline curve is similar to quadratic rational bezier curve
事實上，二次有理b zier曲線是二次有理b樣條曲線的特例，二次有理b樣條曲線曲率單調的充要條件是否與二次有理b zier曲線相類似 -
We have more important significance studying quadratic rational b - spline curve ' s curvature monotony. this paper derive the curvature monotony condition for the quadratic rational b spline curves by using the skew coordinate system that can reduces the calculation process. and the curvature monotony condition is compared to the quadratic rational bezier curves "
本論文通過建立斜坐標系，簡化了計算過程，推導出了二次有理b樣條曲線曲率單調充要條件，並與二次有理b zier曲線的曲率單調條件相比較，結果表明：二次有理b樣條曲線曲率單調的充要條件與二次有理b zier樣條曲線相類似，但其條件又有不同。 -
Nurbs curve equation has three kinds of the equivalence form, i. e. rational fraction, rational base function and homogeneous coordinate
Nurbs曲線方程具有三種等價形式：有理分式表示、有理基函數表示和齊次坐標表示。 -
The stress - strain curve of new - old concrete and hprrc, are suggested to be modeled by two sections : the ascending section of the stress - strain curve is simulated by cubic parabola equation and the descending section is simulated by rational fraction, where the theoretical value is in good agreement with the test value. the research results also provide a theoretical basis of earlier stage for improving crack resistance of new - old concrete interface
新一老硅及hprrc應力一應變全曲線建議採用兩段式擬合:上升段採用三次拋物線方程模擬，下降段採用有理分式模擬，理論值與試驗結果吻合較好。該研究成果為新老混凝土結合面抗裂能力的提高提供了前期的理論基礎。 -
This paper studies the rational b - splines curves with prescribed poles and surfaces for the first time, and studies the properties of this new surface modeling. the result indicate that this modeling not only have the property of geometric modeling, but also have the agility and availability, and score the singular of curve
本文首次構造了指定極點的有理b樣條曲線曲面，並深入研究了這種新穎曲面模型的性質，結果表明該有理曲面模型不僅具有幾何造型的特點，而且更靈活、更有效，並能刻畫曲線的奇性等固有特性 -
An algorithm for constructing rational spline closed curve which is tangent to the given polygon is described
摘要描述了一種與給定多邊形相切的有理樣條閉曲線的演算法。 -
The paper digitized curve shape parameters by rational algorithm. covert analysis from traditional qualitative to quantitative. inherit the traditional method, and suitable for computer deal with large number of data
通過合理的數學演算法將測井曲線中反映沉積環境的曲線形態參數數字化，從傳統的定性分析轉變為定量化分析，繼承了傳統定性分析的思路方法，又適合計算機處理大量數據的要求。 -
In this paper, an algorithm for constructing rational spline curve, which was tangent to the given polygon, was described
摘要描述了一種與給定多邊形相切的有理樣條曲線的演算法。 -
The main research contented and achieved are as follows : first, the paper define the rational space, then require the construction of the rational b - spline basis function, on this basic, paper define a kind of rational b - spline curve with prescribe pole
本文取得的主要研究結果如下:首先，定義了一種指定極點的有理樣條空間，在該空間上給出了有理b樣條（基）函數的構造，由此定義了一種指定極點的有理b樣條曲線 -
The viscoelastic relaxation moduli in time domain are obtained by the inverse laplace transform of the curve - fitted formulae. the method takes advantage of rational curve - fitted formulae and avoids complicated numerical inverse laplace transform
該方法利用合理的曲線擬合函數避開了復雜的數值laplace逆變換，使得單向纖維增強復合材料的粘彈性性能的確定變得容易。
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