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速度分布

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We used NCAR/NCEPT anew analyze data and the method of bilinearity insert to fix on profile distribution of several physical field in the air on observation point and the stream field of 700hPa. We primary discussed the possible mechanism to influence aerosol size distribution.The atmospheric condition of 1000hPa~700hPa level had great influence on aerosol size distribution, and influence on coarse particle mainly below 850hPa level. The horizontal wind velocity of 925hPa level is a primary gene which contributed to coarse particles in the air. Vorticity profile especially below 700hPa level is a key gene to influence diffuse and convergence of local aerosol. The air vertical motion velocity greatly influenced aggregation and remove of aerosol particles. The vertical distribution of air temperature mainly influenced vertical transportation of aerosol.

利用NCAR/NCEP逐日再分析资料,通过双线性插值方法,确定观测点上大气中几个物理量的廓线分布;及700hPa的流场,初步探讨了影响大气中气溶胶粒子谱分布的可能机制: 1000hPa~700hPa的大气状况对气溶胶粒子谱分布影响显著,对粗粒子气溶胶的影响显著的主要集中在850hPa以下;925hPa的水平风速是影响大气中粗粒子气溶胶的一个主要因子;涡度廓线(尤其是700hPa左右及以下的涡度廓线)是影响局地气溶胶的扩散的一个关键因子;大气的垂直运动速度对气溶胶的聚合及移出影响较大;大气温度的垂直分布主要影响气溶胶垂直输送。

Concerning the disadvantage of the original PSO that is easily trapped in the local optimization and the convergence speed is slow in the evolution later, a particle swarm collaborative optimization algorithm based on velocity angle was proposed. The strategy of inertia weight adjustment was adopted based on cumulative distribution function of Gaussian distribution.

针对PSO存在易陷入局部极值、进化后期收敛速度缓慢的缺点,提出一种基于速度夹角的粒子群协同优化算法,并且引入了一种基于高斯分布的累积分布函数的惯性权重调整策略。

This paper has also done the following work to mend the bugs in the former version: Breaking through the size limit of screen, therefore, it took only one time to form the reliability block diagram of a complex system consisting of many components.;Three kinds of life distributions have been applied: Gamma,Beta,Weibull; Interborough estimate has been done to system MTTF; Optimizing the calculation method of complex system consisting of several sub-systems; Improving calculation speed greatly.

本文对上一版软件的不足部分加以了改进:突破了屏幕大小的限制,对于一个由很多元件组成的复杂大系统,只需一次就可以构造出其可靠性框图;增加了三种元件的寿命分布型式:伽玛分布、贝塔分布和威布尔分布等;增加了对系统的平均寿命的区间估计;改进了计算由几个子系统组成的复杂大系统的计算方法;全面提高了运算速度。

Fri particular, the Wittmann-type strong law of larg numbers for independent random variables is generalized to the case of NA random variables. We also present the sufficient and necessary condition of the laws of logarithm, and we extend Teicher-type strong law of the large numbers for sequence of NA random variables. Some of the laws of iterated logarithm of Teicher-type, Egorov-type arid Wittmann-type for sequence of NA random variables are obtained. Then we investigate the rate3f ionvergcll( fbr series of NA randonl variables, we obtain soIne results fbr tl1e Iaws of theiterated logarithttl, the laws of logarithm and decreasing order fOr the tail sum.Risk itllttlysis tlleory is a sigIlifica11t part of insurance InatheInatics.

Wittmann(1985a)关于实独立随机变量列的结果,并给出了NA列强大数律成立的若干条件,特别建立了一般NA列对数律成立的充分必要条件,在二阶矩存在的条件下完整的解决了一般NA列对数律的问题,中文摘要2而已有的一些NA列对数律的结果可以由它推出,给出了NA列的Teiclier型强大数律,表明lbiChCI·(1979)给出的实独立随机变量列的强大数律可以减弱其条件等;建立厂不问分布NA列的Teicfl仪;Egorov,Petrov型有界重对数律,以及加权同分布NA列的有界重对数律,进一步推广了NA列的Kolmogory有界重对数律等,特别对NA列建立了Wittm洲型有界重对数律,而其证明方法与独立情形有很大不同,同时通过反例表明在与独立场合类似的条件下,独立列的Wittmann有界重对数律不能完美的推广到NA歹小惰形;最后研究了NA随机变量级数的收敛速度,给出了尾和下降的阶;尾和的有界重对数律,及尾和对数律成立的充要条件等,并通过反例说明 NA随机变量级数与独立随机变量级数在收敛速度方面存在的差异。

Therefore, the possibility that the film flow was in onflow state was very low under the fisher swing frequency even though the swing affixation force acted on the film. In falling film absorption process, the velocity, temperature and concentration distribution of the liquid film was symmetry on the swing plane basically.

降膜吸收过程中,液体的速度、温度和浓度分布基本上是关于摇摆平面对称分布;速度场、温度场和浓度场的变化周期近似等于摇摆周期;摇摆幅度和摇摆频率直接影响降膜吸收的效果,摇摆频率越低或幅度越大,吸收效果越差。

The results show that the discharge and cooling stages of sparkjet were simulated by computational method. The instance energy input can produce the condition of high pressure and temperature in the actuator, which induce the forming of synthetic jet. With the increment of the input energy, the velocity of the synthetic jet could be increased to the supersonic state. Under the periodic energy input, the distribution of the sparkjet velocity on the nozzle is non-sinusoidal. And the discharge velocity of jet is much larger than the suction velocity of the flow from environment.

计算结果表明:采用本文的计算方法可以模拟出火花型激励器喷射、吸入的工作阶段;电火花瞬间能量的输入产生了腔体内的高温、高压环境,从而诱发合成射流的形成;当激励能量增加,激励器产生的合成射流速度增加,可达到超声速状态;周期性激励下,火花型合成喷喷口处的轴向平均速度随时间不是正弦分布,且喷射过程的最大速度要远远大于吸收过程的最大速度。

Ovarian stromal flow PSV, EDV and perifollicular vascularity are highly interrelated with ovarian response. Ovarian response will be improved when ovarian blood velocity increases and perifollicual blood flow is abundant. Follicular fluid VEGF level was obviously higher in poor responder group, which suggests VEGF be secreted increasing for compensating due to reduced ovarian stromal blood velocity and fewer perifollicular vascularity.

卵巢基质内血流的PSV、EDV和卵泡周血流分布、卵泡液VEGF水平与卵巢的反应性密切相关,卵巢基质内血流速度升高、卵泡周边血流丰富,有助于提高卵巢的反应性;低反应卵巢组卵泡液VEGF水平显著升高,推测是由于其卵巢基质内血流速度低,卵泡周血管分布少,导致VEGF代偿性分泌增加。

The distributions of the volume fraction of the particle phase in the circular cross section were related to the mainstream velocity, and the volume fraction values increased downwards and sidewards with reducing mainstream velocity.

水平井圆截面上颗粒相体积分数分布特征主要与主流速度有关,随着速度降低,体积分数分布值向下向两侧增大。

The effect of the friction between rolls and ring can be ignored and the effect of the spread velocity of rolling on the deformation of ring is illustrated.

通过模拟分析比较,揭示出了环件轧制过程中的金属流动规律:轧制时,环件外侧的变形最大,厚向中心部位变形最小,内侧的变形程度介于中间;环件内外环面的压应力分布和变化规律:在垂直于环件轴线的对称面上,压应力分布近似对称状态,而且在对称面上的应力最大,往端面方向开始减小;指出了环件轧制中轧辊与环件摩擦对环件成形的影响:对于环件的宽展变形,摩擦的影响很小,可以忽略;分析了环件进给速度对环件成形的影响并阐述了环件厚向中心部位凹陷产生的原因,提出防止凹陷的措施:在轧制时,尽量使用快的进给速度有利于防止端面凹陷的产生;研究了导向辊位置对环件成形以及轧辊受力的影响:导向辊的位置对环件的宽展变形影响很小,但对轧辊的受力影响较大,当导向辊的中心位置位于毛坯初始中心位置之上时,驱动辊和芯辊的受力相对较小,这是导向辊导向时优先考虑的位置。

The 29 F globular clusters in the galaxy are selected as samples in my paper (The space distribution and motional orbits of the samples have not been researched in detail before.).According to the basic parameters: azimuth coordinates, distances from the sun, radial velocities and proper motions of sample clusters, the initial positions and velocities of the samples are reduced using the galactic coordinates, and their orbits are integrated by numerical method for three different galactic gravitational potential models.

本文选用银河系中29个累积光谱型为F型的球状星团作为样本(这些样本星团的空间分布和运动特征都没有被详细地讨论过),根据它们的基本资料:方位坐标、日心距、视向速度,绝对自行等参数,归算处理得出了各样本星团的空间分布和运动速度。

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

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