準周期函數 的英文怎麼說

中文拼音 [zhǔnzhōuqīhánshǔ]
準周期函數 英文
almost-periodic function
  • 準 : Ⅰ名詞1 （標準） standard; guideline; criterion; norm 2 （目標） aim; target Ⅱ動詞1 （依據; 依照）...
  • 周 : Ⅰ名詞1 （圈子; 周圍） circumference; periphery; circuit 2 （星期） week 3 [電學] （周波的簡稱） c...
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. Optimal periodic control with the lowest operational cost by limiting total substrate discharge mass was studied. through adding new state variable and using supplement functions, the problem with restriction conditions was converted into nonrestriction problem. in addition, the dynamic searching method of optimal step coefficient was developed to modify the conventional gradient method, consequently the calculation problem of the multivariable optimal periodic control was able to be resolved better. it was found that the operational costs of optimal control under various initial states are distinctly different. a new concept of optimal control under optimal initial state was presented. it is pointed out emphatically that to the treatment system without optimal control condition, the suboptimal control with extensive practical value can be realized according to the results of optima control

    著重研究了在限制有機物排放總量時，使其運行費用最低的最優周期控制問題.通過增加新的狀態變量和用補償函數法，將本課題的有約束條件問題化為無約束條件問題，並提出了最優步長參數的動態搜索法來修改傳統的梯度法，從而較完善地解決了多變量最優周期控制的計算問題.研究中還發現了不同初始條件下最優控制所需要的運行費用也大不相同，進而提出了最優初始狀態下最優周期控制的新概念，這對保證出水質量的同時進一步降低污水處理成本來說具有更重要的意義.本文還強調指出：對于尚不具備實現最優控制條件的處理系統，可根據最優控制的研究結果實現具有廣泛實用價值的準最優控制
  2. On along using two assumptions in portfolio theory : market efficient and investors are risk - aversion, this thesis constructs a multi - cycle portfolio model and works out the investor ' s investment strategy, with the analysis of investor ' s risk preference and the function of investor ' s risk - aversion and making use of dynamic programming optimization method

    在沿用了標準資產組合理論市場有效率和投資者風險厭惡型條件與假設的基礎上，構造了一個多周期的資產組合模型，通過對投資者的風險偏好的分析，結合投資者的風險厭惡函數，利用動態規劃的優化方法得出了投資者的最優選擇策略。
  3. Thirdly, the short - term and long - term financial early - warning system is established based on the financial statements of marketing corporation in electric power, medicine and general merchandise. systematic method, efficiency coefficient method and linear regression method are applied in the short - term financial early - warning system from the aspect of cash flow, operating performance and function model ; growth periods method and management grade method are applied in the long - term financial earl y - warning system from the aspect of growing capability and financial stratagem. finally, lots of examples are given to validate these early - warning models, and some countermeasures are discussed for avoiding and eliminating the distress of enterprise

    首先，介紹了企業財務預警的概念、功能和國內外的研究現狀；其次，闡明了企業財務預警的原理、程序和方法；再次，它以電力、醫藥和百貨行業的上市公司報表為資料，按照指標選取、標準判斷、警限設置和警度預報的步驟，從企業的現金流量、財務業績和函數模型三方面，分別運用系統化方法、功效系數法和線性回歸法構建了企業短期財務預警系統，從企業的成長能力和財務戰略兩方面，分別運用周期波動法和管理評分法構建了企業長期財務預警系統；最後，舉了大量實例對構建的各個預警模型進行考證，並從財務角度探討了企業的防警和排警對策。
  4. 2. we introduced a new polygon periodic discrete curvature function based on curve continue curvature concept in 2d contour matching, the periodic discrete curvature has local, rotation and translation invariant. applying efficient techniques to find the proper matching substrings, we also applied the hashing technique to find long matching substrings

    周期性離散曲率函數具有和原有曲率相似的位移、旋轉、縮放等特性，為提高匹配的準確度，利用高斯函數進行平滑處理，取得了較好的結果，同時該方法具有直觀、速度快等優點，在2d輪廓曲線的匹配中，具有實用可靠的用途。
  5. We organized the whole paper as follow : in section 1, we introduce the background of this article in brief and give out the improved model and do some prepare works ; in section 2, we will prove the system is uniformly persistant under some conditions ; in section 3, we will prove the system is globally asymptotically stable by using lyapuvov function ; in section 4, we will give sufficient conditions of the existence, uniquness and global asymptotical stability of positive almost periodic, solutin of the almost, periodic system

    全文安排如下：第一節簡要介紹了本文的研究背景，給出改進后的模型並進行了適當的準備工作；第二節證明了一定條件下系統的解是一致持久的；第三節通過構造lyapunov函數的方法證明了一定條件下系統的解是全局漸近穩定的；第四節給出了概周期系統的正概周期解的存在唯一性和全局漸近穩定性的充分條件。
  6. In this thesis, we make an assessment and prediction of the performance of the structure with reference to the two theories of time - variably reliability and condition states and achieve favorable results, in the meanwhile, we established the relationship between condition states and maintenance cost, to optimize bridge life circle maintenance and set up objective optimization function and bridge maintenance safety provisions so as to meet the requirement of a reliable life circle structure and guarantee the least cost of maintenance for the bridge structure in its life circle

    文章利用時變可靠度的理論和條件等級思想的兩種理論對結構的性能進行評估和預測，並且收到較好的效果。同時，確定了結構條件等級同維護成本之間的關系。將橋梁壽命周期維護進行最優化決策，根據目標優化函數和橋梁維護安排準則:滿足壽命周期內結構可靠性的要求，同時保證橋梁結構在其壽命周期內其維護成本最小。
  7. In the second part of this work, according to cosine function ' s cycle property and using the quantization square choosed by international standards such as jpeg, h261 / h263, mpeg1 / 2, a kind of dct coding algorithm that based on tabling is put forward

    第二部分採用jpeg 、 h261 h263 、 mpeg1 2等國際標準中所選擇的量化矩陣，根據餘弦函數的周期性提出一種基於查表的dct編碼演算法。
  8. Dates, similarly, can be read, written and converted among many formats with standard function calls e. g. day - of - week, days - in - century, european versus us dates, etc.

    類似的，使用標準函數調用可以對日期進行讀寫和各種格式間的轉換（例如，一周中的第幾天、一個世紀中的第幾天、歐洲時間相對於美國時間，等等） 。
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