level set 中文意思是什麼

level set 解釋
水平集合
  • level : n 1 水平儀，水準儀；水準測量。2 水平線，水平面；水平狀態；平面，平地。3 水平，水準；水位；標準；...
  • set : SET ＝safe electronic transaction 安全電子交易〈指用信用卡通過因特網支付款項的商業交易〉。n 【埃...
  1. Numerical simulation of hydrodynamics of drop formation by a level set method

    水平集方法數值模擬單液滴的生成過程
  2. Research on jacquard fabrics image denoising using allen - cahn level set model

    水平集的提花織物圖像去噪研究
  3. Brain tumor segmentation based on mumford - shah model level set

    模型的腦腫瘤水平集分割演算法
  4. Level set and linear operator classes in menger - pn space

    空間的線性運算元類
  5. In this paper, high - order accurate weighted essentially non - oscillatory ( weno ) schemes are investigated and their applications in hyperbolic conservation laws are discussed. based on this, a new weno difference scheme which based on dispersion - relation - preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics ( caa ) problems has been implemented and compared in order to test capability of wave capturing ; in addition, weno schemes generally do not converge at high order in the presence of contact discontinuity of euler equations, so a conservative front tracking technique coupling weno schemes and level set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy

    本文研究了高階精度加權基本無振蕩（ weno ）格式及其在雙曲守恆律方程中的應用，在此基礎上作了兩個方面的工作：一是針對高頻聲波問題構造出一種基於保色散關系（ drp ）的weno有限差分格式，並對計算氣動聲學（ caa ）問題的代表性算例進行了大量數值實驗，比較了該格式捕捉波數的能力；另外，針對高階weno格式在處理euler方程的接觸間斷時精度有所降低的問題，研究了利用界面追蹤技術levelset方法和高階激波捕捉weno格式相結合的一種守恆追蹤方法，並且給出有代表性的密度滑移面問題的算例，得到一致高階精度的數值模擬結果。
  6. Genetic algorithm for integral - level set global optimization

    水平集求全局最優的遺傳演算法實現
  7. Genetic algorithm implementation of integral - level set global optimization

    水平集求全局最優的遺傳演算法實現
  8. The maximal value point s problem of a convex function on a closed convex subset in locally convex space is considered by using the level set of function, - subdifferential and - normal cone. it gives several equivalent characters on the optimal solutions of the problem

    利用函數的水平集， -次微分和-法向錐等工具研究局部凸空間的凸函數在閉凸子集上的最大值點問題，給出了最優解的幾個等價刻劃
  9. The food safety scientists were also satisfied with the current european level set for its safe daily consumption a maximum of 40 milligrams per kilogram about 2. 2 pounds of body weight saying that the limit is well above what people consume normally

    這些專門從事食品安全研究的科學家們還對歐盟目前實行的阿斯巴甜每日安全食用量標準表示滿意。按照該標準，每公斤體重每天的最大攝入量為40毫克，他們認為這一上限其實遠高於人們正常的食用量。
  10. For each dimension, hierarchy, level set in the query, determine the attributes from the dimension to be in the query

    對于查詢中的每個（維、層次結構、級）集，判斷使用哪些維屬性。
  11. 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； 2
  12. A fter analyzing the present state of the ranks of teachers in yantai professional college and comparing it with the other nine professional technical colleges and institutes in shandong province, the writer thinks that all the higher professional colleges and institutes should, based on self training, introduce more teachers to improve the degree structure of teachers ; enhance the quality of " double masters " to improve the ability structure of teachers by employing both full - time and part - time hands ; and at the same time, the government should strengthen the propaganda for the importance of higher professional education, make qualifications for teachers of higher professional education and offer policy supports about the professional title, payment, etc. only in this way can we have " full - time and part - time teachers of noble ethic, new teaching idea, strong reforming consciousness, high teaching level and great practical ability ", can we really promote the construction of the ranks of teachers in higher prof essional colleges and institutes to make it possibly reach the construction level set by the education department of our country in 2005

    筆者通過對煙臺職業學院師資隊伍現狀的分析，結合與山東省其它9所職業技術學院的對比研究認為，各高等職業學院師資建設必須立足自主培養、加強引進以改善師資隊伍的學歷結構；專兼結合，提高「雙師」素質以改善教師隊伍能力結構；同時，國家應加強高等職業教育重要意義的輿論宣傳，制定高等職業教育教師資格標準，並提供職稱、待遇等方面必要的政策支持。只有這樣，才能建設一支「師德高尚、教育觀念新、改革意識強、具有較高教學水平和較強實踐能力的、專兼結合的教師隊伍」 ，才能切實推進高等職業院校的師資隊伍建設工作，使其有可能在2005年達到教育部規定的師資隊伍建設水平。
  13. The level - set method for open mapping theorem and closed graph theorem of menger spaces

    空間的開射及閉圖定理
  14. Now the method of lever set is wildly used like crystal grows, etc. this paper mainly explains the application in the moving interface aspect of the method, which based on fast tree redistancing for moving interface, including definition of level set method, adaptive mesh ( octatree ) and interpolation of scattering points

    水平集方法現已得到廣泛的應用，如晶體增長等。本論文主要闡述了水平集方法在求等距問題方面的應用，即一種基於樹形結構的快速等距面計算方法，包括水平集方法的定義，自適應網格剖分（本論文採用八叉樹的方法）以及離散點的插值。
  15. Level set method was used in this paper to attain burning surface variety regulation of arbitrary configuration grain by tracing interface of grain surface burnback. the work of this thesis can be summaried as follow : 1

    本文運用等值面函數法（ levelset ） ，追蹤固體推進劑燃燒界面的變化，從而獲得了任意結構型面裝藥的燃面變化規律，本文的主要工作及創新點概括如下： 1
  16. It shares the advantages of the particle level set method, and has the ability to track the interfaces of multiple fluids

    這個擴展的方法保持了原particle level set方法精確性的優點，同時又具有了跟蹤多流體界面的能力。
  17. To capture the fluid surface more accurately, we extend the particle level set method to a multi - fluid version

    為了更精確的跟蹤流體界面的運動，我們把particle level set方法中的粒子修正策略擴展到了一個適合多流體的版本。
  18. This thesis presents the high resolution numerical simulation methods for multi - fluid dynamics. the main contents include three parts : the first is a set of interface capturing equations deduced to describe the interface evolution, which is suitable for constructing two - order enhanced un - split finite volume scheme and three - order parabolic - piecewise - method ( ppm ) scheme in euler coordinate ; the second is the capabilities of level - set method for tracking multi - fluid interfaces are unproved ; the third is that the computational resolutions are much more advanced by improving adaptive mesh refinement ( amr ) technique

    主要研究目的是獲得多介質流體流動的高精度數值模擬方法，主要內容包括界面捕捉方程的推導，適用於euler坐標系的增強型二階精度非維數分裂有限體積計算格式和三階精度ppm格式構造，以及發展改進levelset方法提高捕捉流體界面的能力，發展改進網格自適應技術提高各類方程解的計算精度。
  19. Level set method can track the interface accurately

    Levelset方法能夠準確地追蹤運動界面。
  20. During the solution of the level - set equation, a condition controlling the curve evolution to stop on the object boundaries was set, and the moving object boundaries were achieved

    在水平集的求解過程，設定了控制演化曲線最終停止在目標邊界上的條件，得到了運動目標的邊界。
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