随机

It works for the engineering.In chapter 6, the grazing boundary of riprap and riverbed is analyzed. The opposite expose level and the inclination amount are introduced to describe the physical character of riprap. Then, a stability model is established according to the mechanism of the riprap lost stability.

提出了采用相对暴露度和倾斜角两个指标描述起伏床面影响下的截流抛投块石的稳定形态；对相对暴露度和倾斜角的随机特性进行了分析；并建立截流抛投块石抗倾覆稳定模型，采用随机模拟方法分析稳定率与龙口流速和块石粒径之间的关系。

In order to solve the route search problem in stochastic Petri net, the feature of reliability is introduced into each transition, and suppose that the lifetime distribution of a transition obeys the Weibull distribution model, then a memorial stochastic Petri net with reliability whose elements can record a little information is proposed based on the ant colony optimization algorithm and features of the memorial stochastic Petri net.

为了解决随机Petri网的路径寻优问题，在变迁中引进了可靠性的特性，并假设变迁的寿命服从威布尔分布模型，然后根据蚁群算法和时间Petri网的特点提出了一种网络元素可以记录少量信息的带可靠性的记忆时间随机Petri网。

The conclusions are drawed as following:(1) both reinforcement learning moedel and BBAM can fit the information searching behavior on web in given context;(2) faced with a general restriction, which means a strong uncertainty, the decision making behavior of bounded rationality agent should involve completely rationally calculation and routinism without any conscious reflection on the situation;(3) agent's cognition evolution should be directed by consciousness, the convergence is affected by three factors: the initial belief system, the ...

通过实证分析可以得出以下结论：（1）强化模型和BBAM在一定程度、一定条件内都能较好的刻画用户网络文献检索行为；（2）学习的发生是与特定的外部场景相联系的，在通常的非强外在约束下，有限理性个体进行随机决策时，其行为同时包含了有意识的理性计算和无意识的规则遵循；（3）在随机决策过程中，个体可能发生的认知进化应是有意识指导的结果，但收敛的方向却受到至少三个因素的影响：初始的信念状态、对反馈信号的主观判断能力、试错的次数。

To solve the problem of identifying weak signals with large parameters,principle of stochastic resonance is studied.Conception and realization of scale transformation stochastic resonance are proposed.

为解决大参数微弱信号的识别问题，在研究随机共振基本原理的基础上，提出了变尺度随机共振的概念并给出了实现方法。

The scission of chains in potato starch paste is random in the initial stage, and then non-random.

马铃薯淀粉糊分子链剪切在初始阶段是随机的，然后是非随机剪切。

In Chapter 3 Firstly, the exponential stability in mean square and almost sure exponential stability for neutral stochstic neural networks with time-varying delay can be discussed by using the linear matrix inequality and the semimartingale convergence theorem; And our sufficient conditions are less conserative; Secondly, by utilizing the fixed point theorem, some sufficient and necessary conditions ensuring the asymp- totic stability in mean square for neutral stochastic neural networks with time-varying delays can be given.

第三章首先，利用线性矩阵不等式方法和半鞅收敛定理，考虑了一类具变时滞中立型随机神经网络的二阶矩指数稳定性和几乎必然指数稳定性，所得到的条件保守性要好；其次，采用不动点方法，给出了具变时滞中立型随机神经网络的二阶矩渐近稳定性的充要条件。

Neutral equation; stochastic functional differential equation; stochastic differential equation with delay; infinite delay; asymptotic propertie; semimartingale convergence theorem; Markovian switching; moment stability; moment boundedness

基础科学，数学，概率论、数理统计中立型方程；随机泛函微分方程；随机延迟微分方程；无限时滞；渐近性质；半鞅收敛定理； Markov调制；矩稳定性；矩有界性

According to a completely randomized block design, 54 pigs (Larger White×Landrace) with an average weight of 53kg were assigned to three treatments. The diets contained the same amino acid pattern (TDLys : TDMet : TDThr : TDTrp=100 : 34.6 : 71.7 : 19.2) and digestibile energy levelDE 3200 kcalkg^(-1 with different crude protein levels (CP 10%, 18% and 26%, respectively). The trial lasted for 67 days before slaughter, and longissimus dorsi, psoas major, semaitendinosus, semimembranosus, arm triceps, glutaeus medius, the area, diameter and density of the muscle fibers were measured.

采用完全随机区组设计，54头53kg大×长生长猪随机分为3个处理（每处理3个重复），饲喂等氨基酸(TDLys：TDMet：TDThr：TDTrp=100：34.6：71.7：19.2)、等消化能DE 3200kcalkg^(-1和不同蛋白水平（CP 10%，18%和26%）的3种饲粮，饲喂期67d之后屠宰采样，测背最长肌、腰大肌、半腱肌、半膜肌、臂三头肌、臀中肌的肌纤维面积、直径和密度。

METHODS: Thirtysix SD female rats were randomly separated into 3 groups (n=12 in each one) according to the infarction duration (1, 3, 28 d), which were randomly and evenly again separated into 2 subgroups: operated group and sham operated group. The levels of mRNA expression of ACE2 in the noninfarct and infract area of left ventricle 1, 3, 28 d after AMI were detected by RTPCR and analyzed semiquantitatively by imageanalysis system.

将36只SD雌性大鼠按时间段随机分为3组（每组12只），每组再随机分为假手术组、手术组2个亚组（每组6只），应用RTPCR方法检测大鼠AMI后1，3，28 d左心室梗死区及非梗死区心肌ACE2 mRNA的表达，并以图像分析系统对其进行半定量分析。

METHODS摘要: Thirtysix SD female rats were randomly separated into 3 groups (n=12 in each one) according to the infarction duration (1, 3, 28 d), which were randomly and evenly again separated into 2 subgroups摘要: operated group and sham operated group. The levels of mRNA expression of ACE2 in the noninfarct and infract area of left ventricle 1, 3, 28 d after AMI were detected by RTPCR and analyzed semiquantitatively by imageanalysis system.

方法摘要：将36只SD雌性大鼠按时间段随机分为3组（每组12只），每组再随机分为假手术组、手术组2个亚组（每组6只），应用RTPCR方法检测大鼠AMI后1，3，28 d左心室梗死区及非梗死区心肌ACE2 mRNA的表达，并以图像分析系统对其进行半定量分析。

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％。