Abstract : according to the dynamic demand of main shaft system , the structural dynamic modification method is used for correcting the stiffness of the supportings member and joints , so that the dynamic characteristic of main shaft system should meet the need of design . a practical structure of elastic supporting and elastic joints has been designed on the basis of corredcted stiffness of supporting and joint . the numeric simulation of main shaft system with elastic supportings and elastic joints are compared with its design requirement . their coincidence verifies the effectiveness of sdm method and the correctness of design method 文摘:根据细纱机主轴系统的动特性要求,应用结构动力学修改方法来修正支承和联轴节单元的刚度,以使主轴系统的动特性满足设计要求.根据修正过的支承和联轴节的刚度,一个弹性支承和弹性联轴节的实际结构已经被设计出.比较具有弹性支承和弹性联轴节的主轴系统的数字仿真与设计要求.其一致性证明了sdm方法的有效性和设计方法的正确性
But in most of these productions , it is not allowed to change the workflow except in build time . however , with the expansion of enterprise and rapid changes of market requirement , more and more workflows are no longer static procedures . they need to make some dynamic modifications to react to all kinds of new requirements in run time 然而,随着企业规模的扩大、业务过程的复杂化、市场需求的快速变化、各种新技术的不停涌现和新法规的不断出台,越来越多的工作流都已不再是静态的流程,它们常常需要在运行的过程中进行某些修改以快速响应需求的变化。
The structural dynamic sa in project is of great importance for the study on dynamic design , optimization design , control theory and dynamic modification etc . and direct method , difference method and perturbation method for dynamic sa are adopted regular , though following shortages are obvious : only local impact of the factors on the model can be obtained ; model dependence ; the interval is usually the same for all of the variables and is not related to our degree of knowledge of the variables ; shortage of precision and so on 工程结构的动态特性灵敏度分析对工程结构的动态设计、优化设计、控制理论和动态修改等方面的研究有着十分重要的意义。目前,结构动态特性灵敏度的分析法一般采用局部法,如直接法、差分法和摄动法。但是这些方法只能求参数域某点的灵敏度,不仅受模型、计算精度的限制,而且二阶以上的灵敏度求解比较困难。
Besides the functions specified in h . 323 , such as address translation , admissions control , zone management , call management and bandwidth control , it can satisfied with the requirements defined by users , such as web management , dynamic modification of running parameters , nat environment and fees calculation 它能够和其它h . 323设备互通,具有地址解析、呼叫接入、区域管理、呼叫管理和带宽控制等协议中所规定的功能,还支持web管理,运行参数动态修改,以及支持nat运行环境和计费统计等其它来自客户的应用功能需求。
A dynamic hierarchical description method for workflow is presented . the method provides a dynamic hierarchical way to define a workflow with non - determinate or dynamic factors . with this method , the main process defined at build - time can be reified and extended by the principle of the sub - organizations at either the build - time or the run - time . to ensure the consistency and integrity of the description , a series of constraint rules are also discussed to realize seamless integration between a decomposed process and its original one . this approach supports the description of unpredictable uncertainties , the dynamic hierarchy of business process , and the dynamic modification of enterprise organizations , and all of these improve the flexibility and extendability of workflow management systems dramatically 为支持流程中不确定性因素和动态因素的描述,提出了柔性工作流的动态层次描述方法,使得流程设计人员在流程定义阶段定义的主流程可以在任意时刻由子组织的负责人进行细化和扩充.为保证动态层次描述的正确性和完整性,讨论了动态层次描述的一系列约束规则,确保分解后的流程与原有流程实现无缝衔接.该描述方法支持对不可预知的非确定性因素的描述,支持业务流程的动态层次描述以及组织机构的变化,极大地增加了工作流管理系统的柔性和可扩展性