触发机制

• The analysis of meso - scale synoptic systems indicated that the occurrence and development of the local and paroxysmal meso - scale synoptic systems led to this rainfall besides the helpful macro - scale conditions . the evolution of the meso - systems depended mainly on the topography and the macro - scale conditions , among which the topography and convective instability were thought to be the most important
  同时，在大尺度上升运动区中低层存在一个条件对称不稳定建立的机制，使得在暴雨区，既存在深厚的对流不稳定机制，又存在水汽输入机制和对流不稳定的触发机制，从而形成强暴雨。
• It provides theoretical basis for the studies on integrating workflow management technologies in pdm system . expounded a relation - based lightweight pdm workflow engine and analyzed basic conception , data model , engine control component of the engine . expounded a method for process modeling - time function net based on petri net according to the discussing of methodologies for process modeling
  基于对pdm系统中工作流管理体系框架中的工作流建模工具的讨论，提出了基于petri网的工作流时间功能网模型，通过对时间功能网的概念、基本组件、触发机制的分析，对利用此功能网建立工作流模型的方法和对工作流模型实例的执行和监控机制进行了说明。
• The third part is the analysis to uprightness instability condition . it is made that there was the ascending air current about shenyang , the hailstone forming height is between 700hpa and 400hpa , die water vapor coagulating height is between 950hpa and 900hpa from the simulated tlogp evolvement chart . cape is in favor of severe convection development
  干湿空气间强的风垂直切变是此次冰雹强对流爆发的又一个重要触发机制，强冷空气到达地面强迫暖湿空气抬升，致使对流层中低层出现强风垂直切变，强风垂直切变对强对流的发生和发展起到了非常重要的作用。
• The main thought is to introduce a management system of pattern base in the original data - mining systematic architecture . this management system of pattern base has three mainly function components ： pattern base - storing patterns of data mining ; management system of pattern base - managing pattern base , through management system of pattern base the users can carry on various operations and management ; monitor - offering automatically trigger mechanism , answering for automatical monitoring changed data and transfering changed data to management system of pattern base , in order to implementing automatical update of patterns by data mining again
  即在原有的数据挖掘体系结构中增加一个模式库管理系统，该系统有三个主要的功能部件：模式库? ?用于存储数据挖掘得到的模式(如：关联规则、分类规则和序列模式等等) ；模式库管理系统? ?负责对模式库进行管理，通过这个子系统用户可以对模式库进行各种操作和管理；监视器? ?提供自动触发机制，负责自动检测信息源中数据的变化并把这些变化上报给模式库管理系统，以便通过模式库管理系统启动挖掘模块重新进行数据挖掘来实现模式的自动更新，为模式时效性问题的解决提供了一种方法。
• It can spread risks over years and employ the value of time as well , hence can stabilize the results of the businesses over the medium term and optimize the balance sheet , etc . as a positive response to the demands of enterprise - wide risk management , some so - called integrated risk management products are developed
  为了满足客户进行整体风险管理的需要，一类整体风险管理产品也应运而生。多险种产品和多重触发机制产品是主要的两种形式。前者可以为分属不同险种(一般多为财产和责任保险)的多个风险提供跨年度综合保障。
• Analyze 1000hpa stream field evolvement chart , a southwest - northeast combine strap was forming in liaoning province by southwest air current and northwest air current . level combine induce the combine strap cyclone bend , whorl degree intension increase . boundary layer friction combine bring to ascend and come into being small measure cumulus convection pyrogenation
  高低空急流的耦合是此次强对流爆发的重要触发机制，高低空急流在耦合的过程中， 300hpa高空急流强度超过50m s ， 850hpa低空急流强度超过20m s ，而且低空急流与高空急流刚好在高空急流出口区的位置上相交，对强对流爆发有利。
• The focus of this thesis is mainly given to the latter one . the thesis presents a framework named xfds , on the basis of change detection technology and subscription matching technology . the framework is designed to monitor the fetching of millions of xml documents per day , while supporting millions of subscriptions
  首先，本文以变化检测和意向匹配为核心技术，提出了基于xml的动态信息触发机制的系统框架，目的在于能够每天监控internet范围内大规模的xml文档的获取，并同时支持大规模的用户意向，使得系统能够根据用户的需求对获得的xml文档进行过滤，并将其中的内容以合适的粒度和途径发给相关的用户。
• Based on the degree of urgency of going into graceful ospf restart , the reason of graceful ospf restart is divided into software - restart and hardware - restart , and the way of graceful ospf restart is divided into pre - restart mode and post - restart mode accordingly . after the compare with the traditional ospf realization method and the analysis on the mechanism of the trigger of graceful ospf restart and synchronization of link state database and the exchanging with the route management module ( rtm ) , it is figured out that how to choose the restart mode and how to switch from pre - restart mode to post - restart mode , and how to synchronize the link state database , and how to define the interface and process flow exchanging with protocol supporting module , and how to deal with the forwarding table on the condition of multiple route protocols who also have the capability of graceful restart . finally , the idea of graceful ospf restart with two modes above was realized in the t series routers that belong to a telecommunication corporation
  本文首先找出了引起温和重启的各种原因,然后根据温和重启的紧迫程度,提出把温和重启的原因分为硬重启与软重启,并设计相应的前启动模式与后启动模式;结合传统ospf协议的实现方法,通过对其触发机制、数据库同步机制、与支撑模块的交互机制以及多协议同时重启时路由同步机制的分析,解决了在温和重启过程中启动模式如何选择与切换、数据库如何同步、与协议支撑接口如何定义与交互的问题,并揭示出在多协议同时进行温和重启过程中所必须遵循的一般规律,最终在一个通讯企业的t系列路由器上实现了两种模式下基于ospf协议的温和重启。
• Based on the techniques of main memory database , we have designed and realized the rule subsystem , the rule expression , rule memory structure , rule trigger mechanism , rule execution mechanism , events detection mechanism , transaction analyzing and conversion mechanism from the rule to statement so as to implement the active function of the system . we also discuss cascade trigger , rule termination of the active rule set
  在改进的nhdb ~ *规则子系统中,实现了nhdb ~ *规则的形式化定义、设计了规则的存贮结构,研究了nhdb ~ *规则触发机制、事件检测机制、规则的执行机制、事务处理机制等,从而使得nhdb ~ *系统具有相应的主动功能,实现nhdb ~ *主动数据库的主动行为。