在运动

Chapter four studies the chaotic responses in a system consisting of simple pendulum and harmonic oscillator under bounded noise excitation. Firstly, the Melnikov function of the two-degree-of-freedom system under Hamiltonian perturbation is derived. The essential condition of the autonomous system for the probable onset of chaos is obtained, the Poincare maps of the system under small Hamiltonian perturbation and the effect of increasing perturbation on the Poincare maps are studies. Then for the non-autonomous system under damping and harmonic or bounded noise excitation, the largest Lyapunov exponent and Poincare maps are calculated. From the analysis of the largest Lyapunov exponent, the critical criterion for the onset of chaos, and the conclusion that the threshold of bounded noise amplitude for the onset of chaos in the system increases as the intensity parameter of Wiener process increases are obtained. The result from the analysis of Poincare maps is in agreement with that obtained from the Largest Lyapunov exponent. The effect of varying damping coefficient and intensity parameter of Wiener process is also analyzed.

第四章研究了有界噪声激励下的两自由度单摆—谐振子系统的混沌运动，首先推导了该两自由度系统仅在Hamilton扰动下的Melnikov函数，得到该自治系统可能产生混沌的必要条件；研究了该系统在小的Hamilton扰动和增大摄动情形下的Poincare截面；然后对有阻尼、谐和或有界噪声激励下的非自治系统数值计算了其最大Lyapunov指数和Poincare截面；从Lyapunov指数分析得到了这个两自由度系统产生混沌运动的临界条件及产生混沌的临界激励幅值随Wiener过程强度参数值的增大而增大的结论，Poincare截面分析的结果亦符合Lyapunov指数分析的结论；研究了Wiener过程强度参数、阻尼系数变化对Poincare截面的影响。

In the method, the orbit of targets and the radar coordinates and parameters are put to calculate attitude and dynamic parameters of targets in line of sight. And then the dynamic data are generated according to the electromagnetic modulation model of the movement of targets including motion at high speed, spin, precession on electromagnetic wave.

该方法首先确定目标的轨道和雷达的布站坐标及工作模式，而后计算目标在雷达观测视线(line of sight， LOS)方向上的姿态和运动参数，最后根据空间目标高速运动、自旋、进动等在电磁波上调制的数学模型生成动态测量数据。

Sometimes I wonder if I should have chosen a more physical sport such as tennis, squash or football. I seemed to be good at all sports I played at school.

我经常都在想是否我应该选择更激烈点的运动，比如网球，壁球，足球之类的，看起来我在学校对各项运动都很擅长。

The approximate solution to FPK equation isobtained. The joint probability density function and stationary mean out-crossing rateare investigated for ship nonlinear rolling subjected to additive white noise excitation.Melnikov function and phase space flux are applied to analyze highly nonlinear rolland capsizing of ships in the random seas. The variation of phase space flux withrespect to the characteristic wave period, significant wave height and damping ofships is studied.

求FPK方程近似解，研究白噪声激励下船舶非线性横摇运动的联合概率密度函数及稳定期望穿阈率，应用Melnikov函数和相空间转移率研究船舶在随机波浪中的强非线性横摇运动及其倾覆问题，考虑波浪特征周期、有义波高及船舶阻尼特性的变化规律，推导了船舶在随机横浪中的极限波高的表达式。

Interest in the first wave of the survivalist movement peaked in the early 1980s, on the momentum of Ruff's How to Prosper During the Coming Bad Years and the publication in 1980 of the book Life After Doomsday by Bruce D.

第一波的生存运动达到高峰， 80年代初，生存运动非常繁荣，在此之后几年，布鲁斯D克莱顿于1980年出版了这本《生活在世界末日》。

To implement this guidance law, the thesis purposed one new target state model and adaptive algorithm for radar homing missile attacking maneuvering target, which is based on the slowly changing of the tangential acceleration and the normal acceleration of the spiral maneuvering and snaking maneuvering in target trace frame coordinate system, and on that the most of them equipped with Strapdown Inertial Navigation System, to meet the demand of the advanced homing missile to target state, It can estimate target position, velocity and acceleration accurately by real-time processing.

为了实现该制导律，重点针对先进自寻的制导律对目标机动运动状态的需求和导弹系统大都具有捷联惯导系统的条件，基于目标螺旋机动和蛇形机动的切向加速度和法向加速度在目标轨迹活动标架上缓变的特点，本文提出了一种建立在目标轨迹活动标架上的运动状态方程和扩展观测方程的自适应估计算法。

The differences of different demographic variables of team cohesion among handball players in universities and high schools: there was no difference in the universities' players with gender, age, team participating time, years for getting along with the coach, the highest achievement, training time a day, and training frequency a week; there was no difference in the high schools' players with age, team participating time, years for getting along with the coach, the highest achievement, and training time a day, but there was significant difference in the players with gender.

二、不同人口统计变项的大学院校与高中的手球选手团队凝聚力差异之分析：大学院校在年龄、运动年资、与教练相处年数、最高成就、每次训练时间、每周训练次数均无显著差异；高中方面除了性别之外，在年龄、运动年资、与教练相处年数、最高成就、每周训练次数均无显著差异。

This paper, according to the fundamental needs of developing planning socialist commercial economy, analyses the main tendance and the existing defects in researching accounting theory in our country.

本文根据发展社会主义有计划的商品经济的基本要求，分析我国近年来在探索会计理论改革的主要倾向及其存在的不足，在对资金运动说和会计要素说进行评价的基础上，提出以资金运动说为主，以会计要素说为补充这一完善我国会计学基础理论的基本思路，进而阐述了会计要素划分的理论依据及具体要素划分问题。

125E The final phase in a bull move is an accelerated runaway near the topE In this phase, the market always makes you believe that you have underestimated the potential bull marketE The temptation to continue pyramiding your position is strong as profits have now swelled to the point that you believe your account can stand any setbackE It is imperative at this juncture to take profits on your pyramids and reduce the position back to base levelsE The base position is then liquidated when it becomes apparent that the move has endedE

一个牛市运动的最后阶段是一场接近顶部的加速赛跑。在这一阶段，市场总是让你相信你低估了潜在的牛市。随著盈利膨胀到让你相信你的账户可以对付任何挫折，继续堆砌你的头寸金字塔的诱惑强大。在这关键的时候，要紧的是从你的金字塔上拿走你的盈利，把你的头寸减少到基本水平。随后，当这一运动变得显然结束了时，将这基本头寸也平仓。

The rules of the fuzzy arithmetic is that for the position of running point of phase track, the speed and the direction of the point, the adjustive control is added to the former control.

该模糊算法的控制思想为：针对相轨迹运动点在相平面的位置，以及该点运动的速度和方向，在控制器中原有控制量中加入可以调节的切换控制量。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。