dynamical matrix 中文意思是什麼
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The centrosymmetric structural dynamical systems with damping were studied. the nearest triple matrix of the centrosymmetric with satisfying characteristic equations was found to a given triple matrix ( mass 、 stiffness and damping matrices ). finally, numerical examples were given
3 .研究了阻尼中心對稱結構動力模型修正問題，對給定的三重矩陣（質量矩陣、剛度矩陣和阻尼矩陣） ，求滿足譜約束條件且具有中心對稱特性的「最接近」的三重矩陣，並給出數值算例。 -
Hi the aspect of symmetry analyzing to the hopfield model neural network with hebbian learning, we study on the dynamical behavior of the state space under the action of isometric transformation group g = z2 ? n, and prove the invariant property of the energy orientation ? / / " ) of the state space under the action of g. we find that the symmetry relationship of the network is sx - sw = sh when the active function of the neuron is odd, where sx is the symmetry of the patterns set x under hebbian learning rule, sh is the symmetry of the network and sw is the symmetry of the weight matrix w of the network
） s _ n為手段，研究了網路狀態空間在群g作用下各點的運動情況，證明了群g作用下的不變性。證明了當神經元的激活函數f為奇函數時， hebb法則下存儲樣本集x的對稱性s _ x 、網路對稱性s _ h以及連接矩陣對稱性s _ w三者之間滿足s _ x = s _ w = s _ h的關系；同時，我們還證明了：網路穩定態集vf同一s _ h軌道中的兩個穩定態的動力學行為（能量和吸引域大小）相同；兩個等距網路h和h 1 = g ? h ， （ ? ） g （ -
So aluminum matrix composite is proper for brake rotors which can greatly reduce the weight of the brake system of train that improves dynamical properties of the train, and significantly lower the surface temperature of the brake rotor that increases safety coefficiency of service of vehicle
採用鋁基復合材料制動盤可以大大減輕機車車輛的簧下重量，改善列車的動力學性能，並顯著降低制動盤的表面溫度，提高機車車輛運行的安全性。 -
We deduce easily the coherent term of quantum dynamical model ( the off - diagonal of reduced density matrix ) by improving the nature of displace operator and the nature of coherent states. then, the interaction is energies of a two - photon mechanism and the usual one - photon or liner driving mechanism. we deduce the coherent term by improving the nature of squeezing operators, displace operators and canonical transformation
其一，僅有阻尼相互作用和勢能相互作用，此時利用位移算符的性質和相干態的性質很方便地推導了量子動力學模型的相干項（約化密度矩陣的非對角元） ；其二，考慮的是既有單光子相互作用又有雙光子相互作用，這時利用相干態、壓縮算符及正則變換等的性質推導出相干項。 -
It also can use to reduce the computing freedoms of the weight matrix in associative memory designing by applying the symmetry relations of the network. regarding the artificial neural network as a dynamical system with symmetry will bring the corresponding geometric approach
利用這種對稱性關系，既可以揭示「學習就是尋找樣本集對稱性」這一學習的內涵，又可以在聯想記憶網路的分析與設計中減小連接權計算的復雜度。 -
Based on the impulsive theory and linear matrix inequality technique, a sufficient condition for the impulsive synchronization of chaotic dynamical systems is derived
利用脈沖控制理論和線性矩陣不等式的方法，得到了關于混沌系統脈沖同步的一個充分條件。
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