2篇
您的检索式：作者名="ZHAO ErFeng"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Singular value diagnosis in dam safety monitoring effect values显示文摘Based on the principal component analysis, principal components that have major influence on data variance are determined by the energy percentage method according to the correlation between monitoring effects. Then principal components are extracted through reconstructing multi effects. Moreover, combining with the optimal estimation theory, the method of singular value diagnosis in dam safety monitoring effect values is proposed. After dam monitoring information matrix is obtained, single effect state estimation matrix and multi effect fusion estimation matrix are constructed to make diagnosis on singular values to reduce false alarm rate. And the diagnosis index is calculated by PCA. These methods have already been applied to an actual project and the result shows the ability of the monitoring effect reflecting dam evolution behavior is improved as dam safety monitoring effect fusion estimation can take accurate identification on singular values and achieve data reduction, filter out noise and lower false alarm rate effectively. | GU ChongShi ZHAO ErFeng JIN Yi SU HuaiZhi | 2011 | Science China(Technological Sciences)2011，54，5： | 8 |
| 2 | Multi-dimensional database design and implementation of dam safety monitoring system显示文摘To improve the effectiveness of dam safety monitoring database systems,the development process of a multi-dimensional conceptual data model was analyzed and a logic design was achieved in multi-dimensional database mode.The optimal data model was confirmed by identifying data objects,defining relations and reviewing entities.The conversion of relations among entities to external keys and entities and physical attributes to tables and fields was interpreted completely.On this basis,a multi-dimensional database that reflects the management and analysis of a dam safety monitoring system on monitoring data information has been established,for which factual tables and dimensional tables have been designed.Finally,based on service design and user interface design,the dam safety monitoring system has been developed with Delphi as the development tool.This development project shows that the multi-dimensional database can simplify the development process and minimize hidden dangers in the database structure design.It is superior to other dam safety monitoring system development models and can provide a new research direction for system developers. | Zhao Erfeng Wang Yachao Jiang Yufeng Zhang Lei Yu Hong | 2008 | Water Science and Engineering2008，1，3： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员