The results showed that middle aged women used greater force on contact and leaving phase;the muscle activity and balance control capability of middle aged women on the first metatarsus and heel area were better than those of elder women's.Middle aged women can generate more ankle movement while the other parts of the b...

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First, in this essay, the author states the reasonableness and necessity of permitting transfer of mortgaged property, affirms that mortgager will not lose the right of dispose and is entitle to transfer the property freely when the property is under mortgage. And at the same time, the author agrees the theoretical basis of droit de suite and the mortgagee's interests can be protected through the enforcement of the recovery right. Second, the author introduces the legislation of droit de suite in several countries with typical civil law legal system and analyses the particular characteristics of these different registrations. Third, the author points out the defects and malpractice of the legislations in our country after analyzing the legislation which state ambiguously the recovery right of mortgage and restricts the transfer of mortgaged property based on the tracing the development of system in respect of transfer of mortgaged property in Chinese legislation on guarantee. Finally, according to the real situation of our country, the author presents some concrete proposals on perfecting the system of transfer of mortgaged property and droit de suite of mortgage to reach the balance between static safety of property rights and dynamical safety of transactions with the reference to successful expericnees of other countries.

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The restoring Casimir force, which is the force that changes from repulsion to attraction with the increasing slab separation, may be found to exist between perfectly conducting material and metamaterial slabs. This restoring force is a natural power for the system oscillation in vacuum and also can be used for system stabilization

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The scale analysis on planetary scale motion in the tropical atmosphere shows that the equilibrium between the pressure gradient force and Coriolis force in the meridional direction is easily established, which is known as the zonally semi-geostrophic motion.

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According to the plane cross section assumption, configuration of a rod is expressed as a history of the cross section with arc coordinate. A special solution which stands for equilibrium in straight line state is obtained from differential equilibrium equation. Linear perturbation equation is derived and its general solution is obtained in which the integral constants are determined by constrained conditions at two ends of the rod. The condition of existence of non zero solution of the integral constants gives to the Greenhill formula of exact elastic rod model, which shows that the boundary of stable area is a closed curve and of symmetry, and inference of shearable and extensible to stability of the rod is depend on three factors: difference between flexibility of shear and extension of a section of the rod, bending stiffness and the length of the rod.

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Directed towards its equilibrium position is called a restoring force.

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First of all, the multi-degree-of-freedom equation of motion of the rotor-bearing system, under the action of non-linear oil forces, are derived by Ritz＇ s method according to d＇ Alembert＇ s principle.

軸承系統(tǒng)的不平衡量，給出了一種適合參數(shù)識別的非線性油膜力表達(dá)式午夜福利在线视频观看在线，并引入遺傳算法來識別非線性油膜力的動力系數(shù)和不平衡的大小和位置日韩资源在线观看快射视频免费。

Based on the similarity principle and nonlinear finite element method, reposition balance method was put forward to find the prestress.

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