They can also use the hko s network time service to synchronise their computer clocks to the hong kong standard time . hko s network time service provides fast and accurate time stamping for e - trade and other e - business 天文台的网络时间服务为电子贸易及其他电子商业活动提供快捷而准确的时间记录。二三年天文台的互联网授时服务使用率超过二亿七千七百万次。
The work involves : 1 based on the analysis of previous ddm schemes , considering source - based , destination - based , intermediate filtering mechanism , this paper gives clearly reason and excellence of selecting light - weight mode architecture ; 2 the paper displays light - weight ddm scheme in details , including the relationship of ddm service with other services and object attributes , relevant element designment and algorithm designment ; the paper analyses information flow in light - weight ddm scheme , dividing all implementing classes of ieee 1516 interface specification , showing ddm federate process and explaining how to use " infantry division landing island joint warfare simulation system " to test all ddm implementation algorithms 这主要包括： 1 、在综合分析ddm所有实现方式的基础上，包括基于agent 、网格和区域等实现方法，结合源端、中介端、目的端过滤机制，首次提出了ddm弱服务器模式体系结构； 2 、论文首次给出ddm弱服务器模式方案的具体设计，包括ddm与声明服务、对象服务、所有权服务、时间服务及与对象属性的关系，相关基础设计和详细算法设计等。 3 、最后，论文给出了弱服务器实现模式的信息流向，分析了ieee1516接口规范实现时用到的所有实现类，以及符合ieee1516规范的ddm成员流程，论述了利用“ xxx作战”仿真工程综合测试数据分发管理的过程。
Computer clocks which synchronized with the observatory s network time service might show incorrect date and time during the period of the fault . users whose applications require recording the accurate date and time should check the date and time recorded . the observatory apologizes for any inconvenience it might have caused to users 于故障期间，使用天文台网络时间服务来校对时钟的电脑可能会出现错误日期或时间，如有关用户的应用程式需记录正确日期和时间，这些用户应检查所记录的日期和时间。
