系统发生

If the structure of the same system is transformed, different systematic conducts and functions will arise consequentially.

同样要素组成的系统，如果结构发生转变，就可能引起性质完全不同的系统行为，并且涌现出不同的系统功能。

Based on the equilibrium equation of an arch element the cubic nonlinear dynamic model with second order is established and the nonlinear differential dynamic system without constant term is obtained through a transfer process of T=U+b. Hence three fixed points and the homoclinic orbits are found. The critical condition of the chaotic vibration of the elastic arch is given by using the method of Melnikov function. The numerical results of the stationary and chaotic motion are given and discussed.

首先利用拱的单元平衡方程建立了拱的二阶三次非线性动力学模型；然后通过变换使方程转化为不含常数项的非线性微分动力系统，并由此得到无扰动系统的3个不动点与同宿轨道；再用Melnikov函数法给出了发生混沌的临界条件；最后给出了该系统出现定常运动和混沌运动的数值结果。

However, keywords can only represent the simple content, which easily dissever the relevancy of the content The deep-content representation and application are not developed, so semantic navigation is not satisfied at present. Time mechanism is a kind of navigation mechanisms that uses time for the signpost, and determines navigation route according to the time of occurrence.

时序机制指以时间为导航路标、根据事物发生的时间顺序确定访问路径的一种导航机制，主要应用于WWW信息空间中以时问顺序为线索组织信息的结构中；空间机制指依据对象间的空间关联，为用户指引路径，提供导航路标的机制，应用于具有空间特征的结构中；社会机制指利用先行者的经验、建议为后来者指引路径的行为，原来主要应用在推荐系统、协作系统中，目前已经在主流的信息检索系统中得到了应用，如在CNKl知识网络服务平台（CNS 5.0）中的应用。

The temperature increase and heat gain of the duct in normal system and low temperature air supply system are calculated.

探讨了由于较低的送风温度使送风系统在风管温升、风管得热等方面发生的变化，并用公式计算了常规系统和低温送风系统的风管温升和风管得热。

In case of some special type of systems, when emergency strikes or when some irrecoverable error occurs, embedded systems implement watchdog timers which just reset the system.

如果在某些特殊类型的系统，当紧急情况或当一些无法挽回的错误发生，嵌入式系统的实施看门狗定时器刚刚重置系统

The ability of the new modeling method in the description of logic relations and stachastic processes is proved, which indicates that such a kind of systems composed of components and in which any event has distribution parameters independent of system states, while its happening may depend on system states can be modeled by CRM method.

对这种模型方法的逻辑关系和随机过程的描述能力的给予证明，说明了CRM方法可以描述由部件组成，事件的概率分布参数与系统状态无关，事件的发生可以与系统状态有关的可靠性系统； 3。

The bioinformatics analysis showed that Ang II and ET, IL-1; PGI2 and ALD; NO and ALD composed of three subsystems and interrelated according to the principle of optimality of complex system, and gradual change regulation was also observed in fatigue stress group.

复杂系统分析结果显示：在疲劳应激组，AngⅡ、IL-1β与ET之间，ALD与PGI2之间，ALD与NO之间分别构成3个相互独立的系统，它们之间均是按照复杂系统的最优化原则发生相互联系，并存在递变规律。

The script of diagnostic criteria for MODS with the illness severity score system was established. The script mainly was involved in the evaluation of seven organs or systems, including respiratory system, cardiovascular system, kidney, hemologic system, liver and alimentary system. Only one parameter was used in each organ, they were FiO2/PaO2, systolic blood pressure, serum creatinine, platelet count, conscious state and the defecation status. 0- 4 scores were endued with each indexaccording to the severity of the illnesses respectively. Every descriptor was 5 points, showing 0 point with normal organ function, and 1- 4 scores with organ dysfunction and aggravation.

建立了MODS诊断标准、病情严重度评分系统草案：主要纳入呼吸、心血管、肾脏、凝血、脑、肝脏、胃肠道7个脏器系统，每个脏器系统仅用1个指标表示其功能障碍与否，分别是氧合指数、收缩压、血清肌酐浓度、血小板计数、意识状态、血清总胆红素浓度、排便状况；每个指标结合病情严重程度分别赋予0~4分，0分为功能正常，4分为器官功能衰竭，1~4分为器官功能发生障碍且程度逐渐加重。

Passive power filters is adopt widely because it is simple configuration, convenient maintenance, low cost and etc. Otherwise, passive power filters is easy affect by change of system parameters, can' t remove sequential harmonics, and easy arose series and parallel resonance with system.

无源电力滤波器由于其结构简单，维护方便，造价低廉等优点仍然成为目前普遍采用的一种滤波手段，但是无源电力滤波器受到系统结构变化影响较大，不能消除连续谐波，且容易和系统阻抗发生相互作用，引起串联、并联谐振，严重时甚至使系统崩溃。

Symbolic Dynamics has the advantage of being simple and to the point, can be used to analyze the essence of chaos-happening in the energy system; Melnicov Method can be used to study the mechanism of chaos-happening after system was perturbed. Chapter thirteen briefly introduced how to use the two methods to study chaos in a life energy system.

符号动力学以其简单和"粗粒化"的优点，抓住了能量系统中混沌发生的本质规律进行分析，而梅尔尼科夫方法则专门研究能量系统在受到扰动后产生混沌的机制，本文简要介绍了如何运用两种方法研究生命能量系统中的混沌并例举了简短的实例。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。