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- SAILII is a spatio-temporal DBMS and preferably implements the theory, technology and mechanism of integration of temporal database and spatial database. SAILII原型系统作为一个时空数据库管理系统,较好地集成了时态数据库和空间数据库的理论、技术和机制。
- Finally,spatial temporal speed figure was introduced to help find the headstream of congestion,and t. 介绍了用时空速度变化图寻找拥挤源头以及选择交通控制措施的方法。
- In addition, some researchers found this sonata also reduced seizures in epileptics and improved spatial temporal reasoning in Alzheimer patients. 另外,一些研究人员发现这首奏鸣曲还能减少癫痫患者的发作,以及改善阿尔兹海默病人的时空推理能力。
- As a front-end of commercial DBMS, TimeDB, which is a successful prototype of temporal database management system, basically realizes the managements of temporal data. 作为商业DBMS的前端构件,TimeDB基本实现了时态数据管理功能,是比较成功的时态数据库管理原型系统。
- The paper briefly introduce the production, development and the application prospect of TGIS, elaborates the concept of temporal database and educe the bitemporal theory. 本文简要介绍了时态GIS的产生、发展及应用前景,阐述了时态数据库的概念,引入了双时态理论。
- Aiming at the problems that exist in the study of spatial temporal data modeling and temporal geographic information system(GIS),a general object-oriented spatio-temporal data model(GOO-STDM) is proposed. 针对时空数据模型与时态地理信息系统研究中存在的几类问题,提出了一种通用的面向对象时空数据模型GOO-STDM。
- spatial temporal distribution characters 时空分布特征
- fractional lower order spatial temporal matrix 分数低阶空时矩阵
- A crucial problem that needs to be solved for normalization of temporal databases is to compute the finite closure of attributes for TFDs. 时态模式规范化所要解决的一个关键问题是求解时态函数依赖的有限属性闭包问题.
- In this paper, problems of handling time imprecise in temporal databases are discussed and the representations of imprecise time intervals are presented. 讨论了时态数据库处理不明确时间存在的一些问题,并给出了描述不明确时间间隔的方法。
- In this paper,the question of event temporality were discussed in active temporal database under the presupposition of temporal consistency. Then temporal relation of composite events and Allen relation between arbitrary two events were dealed with too. 在事件时态一致性的前提下详细讨论了主动时态数据库中事件的时态问题;给出了复合时态事件的时态关系以及任意两个事件之间的allen关系.
- Blind MOE spatial temporal multiuser detection in multipath channel 多径信道下盲最小输出能量空时多用户检测器
- Keywords temporal database;spatio-temporal expansion;relational algebra;predicates;spatial moving objects;spatio-temporal data model;spatio-temporal data visualization; 时态数据库;时空扩展;关系代数;谓词;空间运动对象;时空数据模型;时空数据可视化;
- The word is a temporal conjunction. 该词是表示时间的连词。
- Fluctuations are spatial and temporal in character. 这种波动的特点是空间性和瞬时性的。
- The Pope has no temporal power in modern society. 教皇在当代社会没有世俗方面的权利。
- We all follow spatial and temporal order. 我们写作要严循时空顺序。
- STUDY ON NORMALIZATION OF TEMPORAL DATABASE WITH MULTIPLE TIME GRANULARITIES 具有多时间粒度的时态数据库规范化问题研究
- "When" is a temporal conjunction. "when"是一个时间连接词。