函數的增量 的英文怎麼說
中文拼音 [hánshǔdezēngliáng]
函數的增量
英文
increase of function-
Initial growths of disturbances are measured by means of hot - wire anemometry. due to the detected signals with low signal to noise ratio, the coherence function is used to eliminate background noise during data reduction
在擾動增長的初始階段,信號的信噪比非常地低,根據相關譜分析方法,應用相干函數,將擾動信號有效地提取出來,測量了初始擾動的增長。The influence of the cloud droplet spectrum character and the spectrum growth and change is considered, which does not use a cut - off value for conversion from cloud water into rain water process. in the continuous coalescence equation, the particles fall velocity difference is not moved out from the integral, but is integrated in the equation as the function of diameter d to avoid the error of using particles average fall velocity. in the new scheme, generation rate of graupel due to the collection of snow by graupel and the collection of cloud ice by graupel are included
雲中凝結核ccn的數濃度採用超幾何函數表示;雲水向雨水的自動轉換過程採用grabowski ( 1999 )的公式,考慮了雲滴譜的特徵和發展變化對該過程的影響,而不是採用原方案給定閾值的方法描述該過程;對連續碰並方程不再將粒子落速差作為常量提出積分號外,而是直接作為粒子直徑函數在積分號內求解,這樣處理可以迴避使用粒子群的平均落速帶來的誤差;增加了霰和雪、霰和冰晶的碰並微物理過程。This paper develops a deterministic inventory model for perishable items with a mixture of back orders and lost sales under inflation and time discounting, where the backlogged demand rate is dependent on the negative inventory level during the stock out period. the main differences from the existing related models are that the present model takes the maximum present value of profit in a repeatable order cycle as the objective function and proposes a more practical constraint of maximum customer - waiting time to ensure a proper customer service level. then the existence and the uniqueness of the solution to relevant systems are examined and a solution algorithm is shown to find the optimal replenishment policy. at last, some numerical examples are presented to illustrate the applicatioh of the model
本文建立了一種考慮通貨膨脹與時間價值的變質性物品的庫存模型,在模型中允許短缺發生且拖后的需求速率與在缺貨期間已經發生的缺貨量有關.和已有相關模型的主要區別在於本模型把一個可重復的訂貨周期內的最大平均利潤的凈現值作為目標函數,且增加了在缺貨期間最長顧客等待時間的限制,以確保庫存系統擁有較高的服務水平.然後討論了模型最優解的存在性與唯一性,並提供了尋求模型整體最優解的演算法.最後用實例說明了此模型在實際中的應用The representative failure models of arch rib are searched and the rib section resistances are calculated by incremental method and disadvantage loading in the control sections. the structure reliability assessment index on bearing capacity of the arch - bridge is calculated by the function of bearing capacity reliability, structure resistance probability model, load action effect probability model and jc method
對每種荷載布置型式,採用荷載增量法進行拱橋結構失效模式的尋找和截面抗力的計算,給出其承載力可靠度功能函數,推導功能函數中結構抗力和作用效應概率模型,並利用改進的一次二階矩法計算在用拱橋承載力可靠度指標評估值。Compared with the classical bp algorithm, robust adaptive bp algorithm possesses some advantages as following : ( 1 ) increasing the accuracy of the network training by means of using both the relative and absolute residual to adjust the weight values ; ( 2 ) improve the robustness and the network convergence rate through combining with the robust statistic technique by way of judging the values of the samples " relative residual to establish the energy function so that can suppress the effect on network training because of the samples with high noise disturbances ; ( 3 ) prevent entrapping into the local minima area and obtain the global optimal result owing to setting the learning rate to be the function of the errors and the error gradients when network is trained. the learning rate of the weights update change with the error values of the network adaptively so that can easily get rid of the disadvantage of the classical bp algorithm that is liable to entrap into the local minima areas
與基本bp演算法相比,本文提出的魯棒自適應bp演算法具有以下優點: ( 1 )與魯棒統計技術相結合,通過訓練樣本相對偏差的大小,確定不同訓練樣本對能量函數的貢獻,來抑制含高噪聲干擾樣本對網路訓練的不良影響,從而增強訓練的魯棒性,提高網路訓練的收斂速度; ( 2 )採用相對偏差和絕對偏差兩種偏差形式對權值進行調整,提高了網路的訓練精度; ( 3 )在採用梯度下降演算法對權值進行調整的基礎上,通過將學習速率設為訓練誤差及誤差梯度的特殊函數,使學習速率依賴于網路訓練時誤差瞬時的變化而自適應的改變,從而可以克服基本bp演算法容易陷入局部極小區域的弊端,使訓練過程能夠很快的「跳出」局部極小區域而達到全局最優。| | of sb and that there exists a positive nondecreasing function ( a ), a > 0, such that with some k, r, b > 0. then assuming also that ( ) is a regularly varying function at zero, or at infinity, with a positive exponent, [ l ] has proved large deviation results for increments like sup sup | | ( t + s ) - ( t ) | |, which then used to establish module of continuity and large increment estimates for ( )
假設存在正的非降的函數( a ) , a 0 ,使得對某個k , , 0 ,有成立,還假設( ? )是帶有一個正指數,在零點正則變化的函數,文[ 1 ]中給出並證明了形如的增量的有關結論,並由此建立了( ? )的大增量及連續模的極限定理。Based on the spectral irradiance measured with the sun - atmosphere ultraviolet spectrum radiometer ( sauvs ) developed by the institute of atmosphere physics and the changchun institute of optics and fine mechanics, chinese academy of sciences, measuring the direct and scatter irradiance spectrum of ultraviolet waveband which arrives in beijing global surface, giving a method of retrieving the aerosol optical depth ( aod ) and put up with primary results that exponential function can fit the retrieval results according to its visibility, putting forth different coefficients and functions on variable visibility, also giving a primary analysis on the aod in dust - storm day and some contrast between sun - day and dust - storm day, analyzing the ratio between scatter and total irradiance, and its relationship with atmosphere mass and total atmosphere optical depth, lastly contrasting with the survey results by aeronet beijing station, the results of retrieval is in reason, this work gives some help in researching the co - effect of aerosol - radiance - climate and makes preparation for further survey on the radiance characteristics of dust
利用中國科學院大氣物理研究所與長春光學精密機械研究所合作研製的太陽?大氣紫外光譜輻射計( sauvs ) ,測量到達北京地表的太陽直接和散射紫外光譜輻射,導出了大氣氣溶膠的光學厚度。初步結果表明:北京紫外波段大氣氣溶膠的光學厚度在絕大部分情況下隨波長的增加而單調減小,用指數函數可以較好地擬合反演結果,統計得到了三個水平能見度狀況下擬合函數的系數值和公式表達式;初步分析了揚沙、浮塵、沙塵暴天氣條件下氣溶膠光學厚度的特點,並與一般晴朗天氣條件下的氣溶膠光學厚度特點做了比較分析;分析了太陽紫外譜輻射中散射輻射與大氣質量、大氣總光學厚度的定性關系和定量表達式;最後與全球氣溶膠監測網路( aeronet )北京站的資料做比對,表明反演結果基本合理。But modern electrohydraulic servo systems have obvious nonlinear characteristics and often are required to have the ability to trace any curve function and endure relatively big outer disturb. so the working dot of the system changes greatly during the working process, which makes the linear model inapplicable
然而電液伺服系統中存在著明顯的非線性特徵且近代電液伺服系統往往要求系統具有點點跟蹤任意非直線函數的能力並能夠承受較強的外負載干擾,因此工作過程中系統的工作點在較大的范圍內變化,從而使增量線性化模型難于奏效。According to location optimum means of passive control devices based on active control theory, the method using system index delicacy and system index increment to solve linear quadratic objection function is improved. thus such cases as repetitive location of ved can be taken into account
根據主動控制理論的被動控制器位置優化,改進了採用系統指標靈敏度和系統指標增量實現二次型目標函數的方法,使其能考慮ved位置的重復放置情況。Finally a set of equations with initiate values for boundary value problem is established where the velocity potential and its normal derivative are unknowns. because the model includes the effects of both the time and space to the velocity potential of free surface, it can be applied to strong nonlinear wave. as examples, solitary wave is computed in the numerical flume
推導給出計算域內以所有節點波勢函數和波面位置高度的時間增量為未知量的線性方程組,並同時考慮時間因素和空間變位對波面勢函數的影響,在預設的計算精度下,通過時步內的循環迭代逐一確定每個時步上的波面運動位置,從而建立了一種可適于求解強非線性波浪變形計算的數值模式。Such an approach not only is useful for distributive aggregate functions such as sum but also can be applied to the maintenance of holistic aggregate functions like median which will require the storage of a set of tuples for each equivalence class
該方法不僅對分佈型聚集函數如sum非常有效,而且也可以應用於非分步型聚集函數如median的增量維護。這樣的聚集函數需要存儲所有的基元組。( 3 ). the flattening arithmetic of an edfa was presented based on the inter - correlative function between the gain spectrum function of the edfa and that of the reserve transmission spectrum of the lpfg. for optimal matching between the two spectra, the flattening arithmetic calculates the variation of the resonant amplitude and wavelength of the lpfg
Iii .提出了一種動態增益均衡的平坦演算法,這種演算法的本質就是利用摻鉺光纖放大器增益譜函數和新型長周期光纖光柵的透射譜反轉譜函數的相關性,給出新型長周期光纖光柵諧振峰幅度和位置的調節量,使改變后的新型長周期光纖光柵的反轉譜線能和edfa的增益輸出譜線進行最佳匹配。Abstract : in this paper, we propose an improved lagrangian relaxation algorithm to solve job - shop scheduling problems. besides the addition of augmented objective, we expand the search scope of near - optimal solutions and improve the computational efficiency greatly by restricting the solution scope of sub - problems and modifying the search method of dual problem. at the same time, we develop a genetic algorithm combining with the lr ( lagrangian relaxation ) method. using the numerous useful solutions we get in the lagrangian relaxation as the original genes, we can improve the solution further. test results show that these methods achieve satisfied outcome for job - shop problems. they can also be applyed to other programming problems with constraints
文摘:針對車間調度問題,提出了一種改進的拉氏鬆弛演算法.在增加輔助目標函數的基礎上,通過對子問題的限制和搜索策略的改變,使拉氏演算法的計算量減少,近優解的搜索能力有很大改善.本文還提出了一種基因優化演算法,充分利用拉氏演算法得到的多個近優解,進一步優化結果.模擬結果表明對車間調度問題得到了較好的結果.本方法也可用於其它有約束的規劃問題Under linear demand and cost functions, we have reached the following main conclusions : ( 1 ) the capitalist selects his optimal location at the market with the smaller demand under the two pricing policies ; ( 2 ) total output under mill pricing is higher than that under uniform pricing ; ( 3 ) the dealer will prefer mill pricing, whereas the preference of the capitalist is indeterminate ; ( 4 ) the welfare level under mill pricing is definitely higher than that under uniform pricing ; ( 5 ) under uniform pricing, the optimal number affirms declines with an increase in the royalty ratio paid to the capitalist
在線性需求與成本函數的假設下,本文得到的結論是: ( 1 )在此二訂價制度下,資本家均會將購物中心設立於需求較小之市場而有角隅解,但在運費外加的情況下,則可能得到中間解; ( 2 )單一出廠訂價之產量高於單一運送訂價之產量; ( 3 )廠商偏好採用單一出廠訂價,但資本家之偏好則未定; ( 4 )單一出廠訂價之社會福利必定高於單一運送訂價之社會福利; ( 5 )單一運送價格制度下最適廠商家數之多寡隨支付給資本家權利金之比率增加而減少。According to the wind speed distribution function with exponential rule, the difference value is accurately calculated between the actual wind power produced through the rotor swept area and the wind power produced by taking wind speed at the rotor centre as the design wind speed, and the power increment is obtained
摘要根據指數律的風速分佈函數,對風輪掃掠面積上的實際風功率與以風輪中心風速為設計風速產生的風功率的差值做精確計算,得到了風功率的增量。Through the study in the data reduction, this paper presents a new reduction algorithm named horafa - svdm and an incremental algorithm of the heuristic optimal reduct finding algorithm of the frequencies function named horafa ? a
本文通過在數據約簡方面的研究,提出了對利用屬性頻率函數的啟發式約簡演算法的改進演算法? ? horafa ? svdm演算法,以及這個演算法的增量版本? ? horafa ? ia演算法。Efficient incremental maintenance for distributive and non - distributive aggregate functions cui - ping li and shan wang
有效的針對分佈型和非分佈型聚集函數的增量維護Frist, this paper uses unit root test and cointegration techniques to study the correlations between chinese pulic capital and private capital formation, production efficiency and economic growth under the total production function by examining the sample from1978 to 2003
本文第一個工作是在總量生產函數的框架下,以1978 - 2003年為樣本期,運用單位根檢驗和協整分析方法研究了中國公共資本和私人資本形成、產出效率與經濟增長之間的相關性。Conference on very large data bases vldb 00, cairo, egypt, 2000, pp. 461 - 472. 10 lakshmanan l v s, pei j, han j w. quotient cube : how to summarize the semantics of a data cube
本文針對可分佈型聚集函數如sum ,提出了兩種有效的增量維護方法,一種是單元組遞增更新的方法,另外一種批量更新的方法。In this thesis, firstly, we introduce generalized gaussian distributions to model the distributions of dct coefficients of an el frame. then, according to quantization theory, we analyze the distortion - rate function of the generalized gaussian model, with which we conclude that for the actual fgs coding, the derivative of actual distortion - rate function usually decreases continuously as the rate increases, and then begins to increase slowly at a comparatively high bit rate. finally, guided by the
然後分析了fgs編碼的量化模式,並把它應用到ggd分佈上,得到了ggd分佈率失真函數的變化規律,從而獲得實際fgs編碼的率失真函數的變化規律,即fgs編碼失真速率函數的導數先隨著碼率的增加而逐漸減小,然後在碼率比較高的時候開始隨碼率的增加而緩慢地增加。分享友人