跳跃现象

The basicflows are computed by a low-dimensional Galerkin method.The results confirm thattwo times global mode switching occur with increasing Re up to which the Hopf bifur-cation occurs when the absolutely unstable region cover the whole reversed flow region,and the first explanation of this phenomenon with absolute/convective instability theoryis given.

结果证实了只有当绝对不稳定性区域完全覆盖了回流区才会形成整体的Hopf分叉，此前随着Re数的增加整体模态经历了两次跳跃；并首次用绝对/对流不稳定性理论解释了这一现象。

Comparison of inflection between the using of linear and nonlinear function to simulate the defluxion of the cantilever was made in this paper.

并比较了分别用线性、非线性函数模拟悬臂梁偏转对系统动力学行为的不同影响，发现了分岔图出现跳跃这一光滑系统常见的现象。

Therefore the dispersion curves obtained in the field are primarily consisted of the first mode. For a heterogeneous elastic solid consisting of three homogeneous layers whose interlayer has low velocity, the phase velocity V〓 of the first mode will also close up to the Rayleigh wave velocity of the bottom layer when frequency f→OHz, but V〓 of the first mode will close up to the shear wave velocity of the interlayer when f→∞, and there is a cut-off frequency at high frequency region for the first mode and V〓 close up to the compressional velocity of interlayer when interlayer is liquid.

当三层固体介质中存在软夹层时，若f→OHz，则其基阶模式的相速度V〓→V〓（V〓为最底层介质的瑞利波速度）；若f→∞，其基阶模式V〓→V〓（V〓为中间层介质的横波速度）；若三层介质中存在液体夹层，当f→OHz时，基阶模式V〓→V〓，而基阶模式在高频段存在一个截止频率，截止频率处的瑞利波速度V〓→V〓；由此可判定，野外实测的相速度频散曲线不仅有基阶导波模式，同时还应有高阶导波模式波的存在，接收信号中存在模式间的跳跃，因此频散曲线会产生"之"字形现象。

Based on modern option pricing theories,Black-Scholes and Merton option pricing model are used to study the pricing of the structured products,and its design,characteristics and risk are studied respectively.Based on Black-Scholes and Merton option pricing models,I also use the checking method to estimate the parameters of the model following real prices data,And calculate the theoretical price.Then,I compare the real and theoretical prices of the two pricing models.The results show that the effects of the Merton option pricing model are superior to the Black-Scholes option pricing model.Moreover,It shows that Hong Kong stock prices are also affected by the instant messages,and the jump phenomenon may exist in Hong Kong stock market.

本文以香港衍生品市场上三种主要结构性产品结构性票据、牛熊证和衍生权证为例，探讨了结构性产品的设计、特点、风险和定价，以现代期权定价理论为基础，以B-S和Merton两种期权定价为基础，根据市场价格经过校验得出模型隐含的参数，编程计算出两种定价模型下的理论价格，并将其实际价格和理论价格进行了比较，结果显示：Merton定价模型的效果要优于Black-scholes定价模型，说明香港市场的股票价格也可能受即时信息的影响，存在跳跃现象。

The results show that the experimental results are in good agreement with the values of viscosity in a part of temperature range that has been reported, with the relative error of less than 2.5%; In the process of ascent and descent temperature, the irreversible phenomenon of the curve of viscosity versus temperature V presents interzone characteristic, and the break of viscosity at critical temperature reflects jump change of melt structural information; It is one to one correspondence between viscosity and atomic size, and this relation is consistent with the Hall-Petch formula in expression way.

结果表明：实验结果与已报道的部分温度区间内的黏度值基本一致，相对误差低于2.5％；升温和降温过程中，黏度－温度关系曲线V的不可逆现象具有区间特征，临界温度时黏度的突变反映出熔体结构信息的跳跃变化；黏度与原子集团尺寸之间存在一一对应关系，该关系在表达上符合Hall-Petch公式。

Scrubbing is streamlined as well; you can smoothly jump ahead in a video without having to download the file to that point, and without the jerkiness of jumping to the nearest existing keyframe; keyframes are created on the fly by FMS.

选段播放同样是高效的，你可以平滑向前跳跃到还未下载下来的视频点，不会有渐进式下载时因为跳跃到最近的已下载的关键帧而产生的闪动现象，关键帧被 FMS 在运行时创建。

Osmosis phenomenon and jumping phenomenon of the Spar platform can be seen under the condition of internal resonance.

分析了内共振情况下，Spar平台运动特性有渗透和跳跃现象发生。

The results show that electromagnetic vibration of hydropower generator rotors exhibits nonlinear characteristics, including the jumping phenomenon of amplitude-frequency curve and the obvious soft characteristics.

结果表明，动态偏心条件下水轮发电机转子的电磁振动呈现非线性特征，幅频曲线在一定条件下将出现跳跃现象，系统呈现明显的软特性。

The latest progress of the dynamic phenomenon on solid surfaces is summarized,including decay phenomenon of adatom islands, step fluctuations on the surface of metals,the hopping of special clusters on the surface of semiconductors,non-linear oscillation phenomenon on the surface of metal,etc.

总结了近年来国内外固体表面动态现象研究的最新进展，其中包括金属和半导体表面原子岛的塌落现象、金属和半导体表面台阶波动、半导体表面特异集团的跳跃、金属袁面非线性振荡现象及其它一些动态现象；描述了这些动态现象特征及形成机制，并展望了动态现象的研究方向和应用前景。

We found that the speed plateaus and jumps are ubiquitous in nanotubes.

在运动中，速度的平台现象以及速坪之间的跳跃是该共轴纳米结构所拥有的普遍现象。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。