In the 4th chapter , based on technologies in quo , we proposed a data consistency - protecting framework that includes lock mechanism , data protecting model , multi - version management and process - level transaction failure model 论文第四章在现有技术基础上,结合加锁机制、数据保护模型、数据多版本管理以及流程级事务故障处理模型,给出了一套较好的相关数据一致性保护框架。
A novel lock mechanism , which is a combination of predicate lock and two - phase locking of data records , is also designed in the context of egist . the degree 3 consistency or repeatable read isolation of transactions can be guaranteed 并针对egist结构的特点,采用扩展的右链技术以及谓词锁与两阶段数据锁联合使用的封锁策略,实现对egist索引树的高效并发操作,并可满足事务的可重复性读一致性要求。
It all comes down to several key features to look for in a locking mechanism , they are ease of use ( even under non - ideal circumstance ) , reliability to be certain it will not fail inadvertently , and strength relative to the knife application 他们全都流传下一些关键的特性,可以按这些特性来寻找一些锁定机械,他们是一种简单用法(即使在非理想情况下) ,必须确认他们的可靠性,会不会不小心的解锁,并且强度关系着刀具的使用。
The article based on the development of visa discusses visa in seven aspects : the design of visa resource model and node model , the design of resource manager , the realization of visa i / o function , the realization of events mechanism , visa lock mechanism , the design of visa error mechanism , and the experiment of visa 本文在visa开发工作的基础上,从visa资源模板和节点模板的设计、资源管理器的设计实现、 visai / o函数的设计实现、事件机制的设计实现、 visa资源锁机制、 visa错误机制的设计实现、 visa的调试实验七个方面对visa的开发技术进行了讨论。
Lock mechanism is used here . as a part of the national 863 planned project - " 2001 aa41 1320 regional modern integrated manufacture system development and application oriented city chengdu , deyang and mianyang " and the science and technology key project of sichuan province - " the engineering configuration intelligent cad technology oriented the process of design " , what the anthor had mainly done shown as below . introduced the characters of cooperative cad system , studied the locking mechanism on concurrent control of cooperative design , especially the multiple granularity locking mechanism , decriped the locking mechanism in rsise formal method , checked and implemented the locking mechanism in rsise 作为国家863计划项目: “ 2001aa411320以成德绵为核心的区域现代集成制造系统开发及应用”与四川省重大科技攻关项目: “ 01gg010 - 01区域制造业信息化关键技术与应用研究”的一部分,本文对结点的加锁机制进行了详细的研究,并且用raise形式化方法进行了描述和实现,具体工作如下: ( 1 )分析和总结了协同设计系统各种并发控制机制及其优缺点; ( 2 )研究了协同设计系统中并发控制的加锁机制。
The synchronization control algorithm for entity set in ciao ( collaborative immersive architectural layout ) is amended . within the amended algorithm , semi - optimistic locking mechanism in ciao is replaced by token mechanism , and receiver - reliable multicast based on the father node number is proposed to enhance robustness of system . entities and avatars in scene are organized the structure of tree 西南交通大学博士研究生学位论文第11页改进了ciao ( collaborativeimmersivearchitecturallayout )中实体组同步控制算法,用令牌机制替换ciao中半乐观锁机制,并提出了基于父节点记录的收端可靠多播算法,即在每个实体的espdu ( entitystateprotocol ? dataunits )中增加父节点的节点号,接收端根据父节点的节点号调整本地场景树的结构。
Lock mechanism of that concurrency control can effectively void the dead - lock , two phase commit can guarantee atomicity of the distribute transaction while distributed transaction is executed with which the consistency of the database system is guaranteed . the method of checking the inconsistent is mainly to track the update status of multiple repetitions when distributed and parallel database system is not busy , and to detect inconsistent early . consequently , system can be recovered to best status 数据库在执行分布式事务的时候,并发控制的锁机制可有效的预防分布式事务中的死锁现象,两阶段的提交协议可以保证分布式事务执行的原子性,从而有效地保证了分布式并行数据库系统的一致性,不一致性检测的方法主要是在保证系统非繁忙状态下对多个副本间的数据库的更新状态进行跟踪,也保证了数据库多个副本间不一致状态的及早发现,从而使系统及时地恢复到最佳运行状态,提高了分布式并行数据库系统的可用性。
The study of a bogie ' s type which include such as the model of wheel , moving mode of wheel , bearing style of loads , locking mechanism , changeable range of gauge , etc . , is put up , and based on those , two design projects of the gauge - changeable bogie are put forward 论文首先进行变轨距转向架的方案设计研究,从变轨距车轮的型式、车轮的移动模式、载荷的承载方式、锁紧机构及变轨距转向架的轨距变化范围等诸方面对变轨距转向架进行了选型分析,并在此基础上提出了两套变轨距转向架设计方案。
The two phases will require the development of various security procedures for flight deck access and additional procedures in the event of emergency evacuation . subsequent to the meeting , cad issued a new flight operations notice which defined the latest faa regulations regarding the strengthening and locking of the cockpit door on all passenger aircraft flying into the usa , and further mandated the cad locked cockpit door procedures , including requiring the door locking mechanism to be secure to the extent that tempering with the lock or door handle from the passenger cabin does not unlock the door 在会议过后,民航处发出新的飞行运作通告,就美国联邦航空局关于所有飞往美国的客机驾驶舱门必须锁好和令舱门更为巩固的最新规则,作出阐释;并且进一步就民航处规定关锁驾驶舱舱门的程序发出指令,其中包括规定舱门的关闭装置必须巩固,即使有人从客舱内破坏驾驶舱的门锁或把手,也不会令驾驶舱的门开启。
Based on studying the tick - lock mechanism , the co - operating transmit path is analyzed deeply by analyzing the influence made by region factors , region advantage to the choice of fdi region international product style . the international product styles have been divided in this thesis . the factors including technologies factors , resource factors , industries policy and foreign capital centering degree of the industries and its " input barriers pointed influence the trades choice of the foreign capital importantly 分析了区位因于、区位优势、国际生产类型对外资区位选择的影晌,指出显著因子、障碍因子、区位优势的层次性对国际生产资本地域运动的具体影响,井划分了国际生产类型;分析了企业选择与产业选择的区别,指出技术因素、资源因素、产业政策和外资政策、目标行业的市场集中度及进入壁垒等对外资的产业选择具有重要影响,并只体研究了国际直接投资的部门分布;构建了外资进入方式选择的分析框架,从不同层面重点研究了影响跨国并购与绿地投资的因素。