In view of urban water consumption's being affected by many factors and its systemic stability and non-linear characteristic,a non-linear time series forecasting method is studied in this paper based on neural network,and it was used to predict the water consumption for Zhengzhou city to verify its accuracy and rationality.

考慮城市用水量受眾多因素影響性爱操逼片，具有系統(tǒng)穩(wěn)定性和非線性的特點(diǎn)，探討了基于神經(jīng)網(wǎng)絡(luò)的城市用水量預(yù)測(cè)的非線性時(shí)間序列遞推預(yù)測(cè)方法，并利用該方法對(duì)鄭州市城市用水量進(jìn)行了時(shí)間序列模擬，實(shí)例證明了該方法的正確性和科學(xué)性黄色视频在线观看wwww。

Leaf blades linear to linear-lanceolate; ligule a ciliate membrane.

葉片線形到線狀披針形；葉舌一層纖毛的膜精品综合日韩久久久久久久。

Computer graphics simple linear and circular painting of a simple realization of the two paintings linear method, a method Circle.

計(jì)算機(jī)圖形學(xué)的簡(jiǎn)單的畫直線和圓的簡(jiǎn)單實(shí)現(xiàn)人人操人人干人人做，兩種畫直線的方法，一種畫圓的方法A级日本一线www。

Special solutions for the ring circular domain with crack surfaces acted on uniform compressive force, linear compressive force and linear shearing force are deduced in polar coordinate employed the eigenfunction expansion technique in the Hamiltonian system of elastic mechanics. Combined with the general solution for the above problems, the analytical solutions for crack tip fields with surfaces acted on the above three kinds of loads are obtained. These solutions offer theoretical basis to construct analytical elements for plastic analysis of crack.

從彈性力學(xué)哈密頓體系理論出發(fā)超碰在线最新发布免费，利用平面彈性力學(xué)極坐標(biāo)系下的本征向量展開求解，推導(dǎo)了環(huán)形圓形域裂紋邊作用有均布?jí)毫ε访廊饲萃尽⒕€性壓力和均布剪切力情況下的特解日本天堂在线黄色视频，從而得到了裂紋表面作用有以上三種荷載情況下的裂紋尖端場(chǎng)的解析解，為進(jìn)一步構(gòu)造進(jìn)行彈塑性裂紋分析的奇異解析元奠定了理論基礎(chǔ)一本无道码dvd在线播放一区。

In addition, the voltage-current characteristic of linear resistive components is the general solution of Clairaut equation, and the voltage-current characteristic of non- linear components is the singular solution of Clairaut equation.

論文摘要：本文討論了任意伏安特性電阻元件滿足的基本微分方程以及非線性電路的功率匹配問題的幾個(gè)定理，指出任意伏安特性電阻元件均滿足非線性一階的clairaut方程999一级黄片，并且天堂网在线视频播放，線性電阻元件的伏安特性是clairaut 方程通解，而非線性電阻元件的伏安特性是clairaut 方程的奇解免费观看未18禁止网站国产。

The result indicated that 237 combinations amplified a total of 13 079 AFLP fragments with an average of 55 fragments, the average of 1.30 markers per 1 000 AFLP fragments were found to be linked to clubroot resistant gene; the amplified polymorphic fragments were 3 167 between the two parents, account for 24 percent of polymorphic frequency; the number of amplified fragments and the number of polymorphic fragments was in positive linear correlation; GC content of AFLP primer combinations significantly affects the number of amplified fragments and the number of polymorphic fragments, indicating negative linear correlation between them.

結(jié)果表明：平均每個(gè)組合檢測(cè)到55條帶免费视频福利，共擴(kuò)增13079條帶，平均每1000條帶檢測(cè)到1.30個(gè)根腫病抗性基因連鎖標(biāo)記伊人久久大线影院首页；多態(tài)性帶數(shù)為3167條操操日日日操，雙親間多態(tài)性頻率約為0.24；擴(kuò)增帶數(shù)與多態(tài)性帶數(shù)呈線性正相關(guān)久久国产一区精品免费观看，引物組合中的不同GC含量與擴(kuò)增帶數(shù)和多態(tài)性帶數(shù)存在顯著性差異一级黄色一级黄色一级黄色一级黄色a级毛片，并表現(xiàn)出線性負(fù)相關(guān)黄色视频你们懂的。

This paper researches linear maps preserving orthogonality,obtains the linear maps preserving othrogonality,it is either a rank -declining or rank -keeping map or a map with nilpotent element in its codomain.

利用分塊成向量的方法證明了MnMn(F為域F上所有n×n矩陣構(gòu)成的乘法半群上的n×n擬正交矩陣組至多含有n個(gè)矩陣，利用方程組的解的理論證明了Mn中與給定矩陣A構(gòu)成兩兩擬正交矩陣組的矩陣個(gè)數(shù)不超過n-Rank+1黄片AAAAAAAAAAAAA，從而得到Mn上保持?jǐn)M正交性的線性映射φ要么是降秩的或者保秩的映射亚洲强奸视频在线观看，要么φ的值域中含有冪零元。

If for every k-list assignment L, there exists a linear edge L-coloring, then G is called linear k-list colorable.

圖G的列表線性蔭度是使得G是線性邊k-列表可著色的最小正整數(shù)人人操人人干人人玩人人摸人人看人人，記為lla亚洲日韩在线一区二区三区。

Fast algorithm of minimal norm least square solution for Cauchy linear system;2. For the m×n Cauchy-type matrix with full column rank,the fast algorithm of the minimal norm least square solution to the linear system Cx=b was obtained by construction of a special block matrix and study of the triangular decomposition.

對(duì)于秩為n的m×n階Cauchy型矩陣C，通過構(gòu)造特殊分塊矩陣并研究其三角分解国产一级A婬片试看26分钟，進(jìn)而得到了線性方程組C x=b的極小范數(shù)最小二乘解的快速算法无码97视频，所需運(yùn)算量為O+O(n2)，而通常構(gòu)造法方程組的方法所需運(yùn)算量為O(m n2)+O(n3)久久久久国产AV，用正交化法雖然避免了構(gòu)造法方程組国产综合一区二区三区精品，但所需的運(yùn)算量更大些。

The definitions of intrinsical linear nonholonomic constrain and intrinsical nonlinear nonholonomic constrain are put forward in this paper. The nonholonomic systems are divided into intrinsical linear nonholonomic system and intrinsical nonlinear nonholonomic system.The rational spectrums of all kinds of virtual displacement definitions and commutativity of d,?

本文研究了非完整動(dòng)力學(xué)中使不定性問題確定化的交換關(guān)系和將非線性問題線性化的虛位移定義成年人网站免费视频在线观看，首次證明并給出了在非完系統(tǒng)中各種虛位移定義與交換關(guān)系的合理適用范圍女人张开腿让男人桶到爽，指出完整動(dòng)力學(xué)與本質(zhì)線性非完整動(dòng)力學(xué)在研究方法上具有相同性。