近似连续

In addition, the polynomial approximation of these breakpoints slope and curvature is continuous.

此外，近似多项式通过这些断点的斜率和曲率是连续的。

It was supposed that the dynamic moving process of the stock price and the return was driven by Geometry Brownian Motion and the lognormal distribution respectively. Takinginto account the riskneutral environment, we got a closedform analytical formula for deferred arithmetic asian options by the method of Taylor expansion of the stochastic integral formula within the terminal payoff. Furthermore, with the series definition of the definite integral, we transferred the continuous problem into a discrete one which is simpleenough to figure out. Meanwhile we tested the accuracy of the formula with the Monte Carlo simulation as a benchmark and the result shows that the formula can be utilized to price the related financial derivatives.

在标的价格服从几何布朗运动、收益服从对数正态分布的前提下，通过风险中性定价原理，对到期损益中的随机积分进行任意次Taylor近似，并由级数定义将此连续问题离散化，给出了延期算术平均亚式期权封闭形式的解析定价公式，并与Monte Carlo模拟得到的价格作为标尺对得到的公式进行精确性检验，结果表明，所得公式可以应用到金融实务中对此类衍生品定价中。

Firstly, the developing principles of the cylindrical internal helical gear are proposed through analyzing the movement and geometry requirements, which provides continuous contact between the mating gear surfaces. The tooth surface of the internal helical gear in the new gearing can be imagined as being generated by the normal section of the conjugated surface of the ball-tooth, moving along the radial projection of helix line of the tooth-root circle. Also, the proposed surface can be approximate tangent to the conjugated surface of the ball-tooth along a spacial curve.

首先，通过分析保证行星轮作螺环运动时与内斜齿轮实现连续啮合传动的运动和几何条件，提出了圆柱内斜齿轮齿面的两种形成原理：即由球齿运动包络曲面的法截面沿其齿根圆螺旋线在径向的投影进行拓展所形成的内齿面，以及与球齿运动包络曲面呈近似相切接触的等螺距齿面构成的内齿面。

There are two kinds of models about the higher-order correlation networks. In the two-state model, the higher-order Hebbian algorithm is usually used. For this Hebbian algorithm can have better associative memory only to orthogonal or near orthogonal prototype patterns, another learning rule, higher-order projection algorithm, is proposed in tensor representation in this dissertation.

关于高阶关联网络有两种模型，即两状态离散时间模型和模拟状态连续时间模型，在两状态离散时间高阶关联网络中最常用的是高阶Hebb规则，这种规则对于正交或近似正交的原型模式才具有比较好的联想记忆性能，因而本文用张量表示法给出了另外一种学习规则—高阶投影规则。

The main idea of the simulation is adopting Monte Carlo method and the classical over barrier model to simulate the randomicity of the charge exchange processes between projectile and metal and the dispersing of projectile's continuum movement. In each step, the movement of projectile is considered to a uniform acceleration.

本论文模拟的基本思想是在经典过垒模型下，采用蒙特卡罗方法来模拟入射离子与固体间电荷交换过程的随机性，并将入射离子连续的运动过程离散化，在每一个步长中，将入射离子的运动近似看成是匀加速直线运动。

This method is not necessary to solve a complex unlined partial differential equation so that the computational cost is reduced.

本文在温度场的模拟计算中，将铸件中同时发生的连续的传导传热和对流传热，用在微小时间间隔内独立的传导传热和对流传热近似表达，完成充型过程中流场与温度场的耦合计算。

We present the concept of α-CVaR under the confidence level vector α and its optimal control model with continuous time, which can be dispersed approximatively to a problem of multi-stages analysis.

给出连续时间条件下的α-CVaR损失值的概念及相应的最优控制模型，它可近似离散化为一个多阶段决策问题。

This paper bases on the former documents which related to the distance in HMM (we also proved Juang and Rabine's intuitionistic discussion strictly ), and study the distance in HMM from two aspects:the one is to find the more rapid and effective approximate algorithm, the other is to introduce a new and more applied distance.

针对J-R距离在理论上很有意义，但实际上难以计算且结果具有不确定性的缺点，利用文献[11]，得到了近似计算离散HMM和具有混合高斯观测密度的连续HMM距离的一种快速有效的算法，该算法用矩阵形式来表达，便于用MATLAB进行计算。

We assume that changes of azimuth antenna pointing between subswaths are small enough to guarantee that DC changes much tinier than PRF diversity.

算法假设子带间的方位向天线指向变化足够小，以致由此导致的多普勒中心的变化远小于PRF的差异，从而可以近似认为多普勒中心是随距离连续变化的。

Consecutive first-order reaction ; the ratio of the rate coefficient ; steady-state approximation ; computer simulation

一级连续反应；速率系数比值；稳态近似法；计算机模拟

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。