基于ECA规则的ACOODB中的事件研究

通过对ACOODB中的原子事件、复合事件以及各种操作符的研究,给出了复合事件操作符的面向对象的描述,并对其中的关键复合事件操作符给出了类c 实现。从而实现了ECA规则中的事件在ACOODB中的无缝嵌入。     

稀有事件右删失生存数据的伞形约束检验

研究了稀有事件右删失生存数据的K-样本伞形约束检验问题，利用非参数统计方法在得出了检验稀有事件伞形约束顶点分别已知和未知的比较有效的统计量，同时证明了这些统计量的渐近正态性和相合性等一些优良的特性．     

Internet-based event synchronization communication driven telerobotics

1.INTRODUCTION Teleoperationmakeshumansensetoremotesiteand byitmanyapplicationcanbeappliedintoreality.A longdistanceteleoperationmayhavemuchmore meaningtopeople.Throughspace,sea,andnet work,teleoperationshowsitscharm.Whenrobotis inducedinteleoperationastheexecutoritisnamedas telerobotics.NowInternetisprevalentintheworld,overitconstructingateleroboticshasmuchmoread vantagethanothers,likeconstructingeasily,cheap costandmaintenanceconvenientlyetc.Butthereare alsosomedrawbacksinit,liketimede…     

Variations of opal accumulation rates and paleoproductivity over the past 12 Ma at ODP Site 1143, southern South China Sea

The biogenic silica analysis was performed on 463 samples from ODP 184 Site 1143, the southern South China Sea. The results show that the opal content and MAR evidently increased between 12.3 and 5.7 Ma, which was contemporary with the high carbonate and total MARs, reflecting the high biogenic productivity in the late Miocene.This demonstrates the occurrence of the late Miocene "Biogenie Bloom Event" in the southern South China Sea, corresponding to the late Miocene-early Pliocene "Biogenic Bloom Event" in the Indian-Pacific Ocean. The increases of opal content and MAR after the middle Pleistocene (about 0.7 Ma)is inferred to result from the enhanced upwelling and nutrient supply, which was induced by the intensified monsoon circulation after the "Mid-Pleistocene Revolution".     

How to make value-driven climate science for policy more ethical

In previous works, I examine inferential methods employed in Probabilistic Weather Event Attribution studies (PEAs), and explored various ways they can be used to aid in climate policy decisions and decision-making about climate justice issues. This paper evaluates limitations of PEAs and considers how PEA researchers’ attributions of “liability” to specific countries for specific extreme weather events could be made more ethical. In sum, I show that it is routinely presupposed that PEA methods are not prone to inductive risks and presuppose that PEA researchers thus have no epistemic consequences or responsibilities for their attributions of liability. I argue that although PEAs are nevertheless crucially useful for practical decision-making, the attributions of liability made by PEA researchers are in fact prone to indicative risks and are influenced by non-epistemic values that PEA researchers should make transparent to make such studies more ethical. Finally, I outline possible normative approaches for making sciences, including PEAs, more ethical; and discuss implications of my arguments for the ongoing debate about how PEAs should guide climate policy and relevant legal decisions.     

FFSR的关节力矩递推算法及其捕捉目标研究

基于Ｌｕｈ等人针对地面机器人提出的Ｎｅｗｔｏｎ－Ｅｕｌｅｒ法建立了计算自由飞行空间机器人（ＦＦＳＲ）关节驱动力矩的递推算法;结合基于广义逆雅可比矩阵的分解运动速度控制法提出了一种捕捉目标的力矩控制算法;计算机仿真验证了算法的有效性．     

面向数字孪生的动态数据驱动建模与仿真方法

信息物理系统(cyber-physical system, CPS)是支撑信息化和工业化深度融合的综合技术体系,传统的建模与仿真方法难以满足其应用需求。因此,提出面向数字孪生的动态数据驱动建模与仿真方法,通过随机有限集对CPS中的物理实体和传感器进行数据驱动建模,并使用基于贝叶斯推理的预测与校正过程支持数据驱动的仿真模型运行。该方法能够很好地实现数字孪生机制下虚实结合的仿真运行,并实现数据驱动的CPS仿真模型解算,通过以实利虚的方式有效提高了仿真结果的准确性和可信性。最后,通过水面舰艇作战应用案例,验证了该方法的可行性和有效性。     

端点模糊的区间代数

由于现实世界中事件的持续时间难以精确测量,以及起始时刻及结束时刻的模糊性,使得Allen的敬意代数不能很好地刻画事件的模糊时间区间,用事件的持续密度函数的概念来表示事件的持续时间,并用时间区间来近似持续密度函数,使得可以应用Allen的区间代数来进行相应的时态推理。     

基于内容发布/订阅系统中的事件匹配和路由算法

基于内容的发布/订阅是一种新型的通信方式。在这样的系统中,事件通知的发布者不必给消息明确的目的地址,消息的目的地址由匹配订阅者申明的选择谓词的消息内容确定。因此,订阅与事件的匹配,路由成为基于内容发布订阅系统中面临的关键问题。详细分析了几个有影响的基于内容发布/订阅系统原型中使用的事件匹配和路由算法,和算法的特点和适用范围     

元数据驱动的关系数据模型通用编辑系统

针对传统模式开发管理信息系统中的数据编辑部分所产生的工作量大,成本高,耦合度高的问题,提出了一套元数据驱动的数据编辑的框架模型。以描述应用数据库的元数据模型作为系统建立的基础,由此动态建立数据表的关联关系,实现数据表与用户界面的数据转换;编辑具体字段时,根据元数据信息调用诸如树形列表等构件。在大庆油田的实践表明,基于该框架模型的数据编辑工具的实现能够减少工作量、节约成本,降低耦合度。