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集控站监控系统的实践
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作者 许琰 沈晓东 黄申 《湖州师范学院学报》 2008年第S1期145-150,共6页
使用公共数据采集平台建设集控站自动化系统是一种新的系统建设模式.本文介绍了基于该模式的集控站自动化系统的总体架构、监控系统功能的具体实现,以及系统建设和运行方面的一些体会.
关键词 集控站监控系统 数采平台 集中监控 分片操作
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Oracle基于磁盘竞争的解决方案
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作者 马淑萍 陈岗 《计算机时代》 2004年第6期4-5,8,共3页
Oracle中磁盘竞争是影响I/O速度、降低系统性能的常见问题,可以通过分离顺序I/O、利用分片技术分散随机I/O;分别存储数据和索引、消除磁盘上的非Oracle的I/O操作、减少数据迁移和数据链接、减少碎片等方法有效地减少磁盘竞争,提高系统... Oracle中磁盘竞争是影响I/O速度、降低系统性能的常见问题,可以通过分离顺序I/O、利用分片技术分散随机I/O;分别存储数据和索引、消除磁盘上的非Oracle的I/O操作、减少数据迁移和数据链接、减少碎片等方法有效地减少磁盘竞争,提高系统性能。 展开更多
关键词 ORACLE 磁盘竞争 I/O操作 操作系统分片 硬件分片 碎片
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Pest Detection Method Using Multi-Fractal Analysis 被引量:3
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作者 Yun-Ki KIM Jang-myung LEE 《Journal of Measurement Science and Instrumentation》 CAS 2011年第3期240-243,共4页
A novel method for pest detection is proposed based on the theory of multi-fractal spectrum to extract pests on plant leaves.Both local and global information of the image regularity were obtained by multi-fractal ana... A novel method for pest detection is proposed based on the theory of multi-fractal spectrum to extract pests on plant leaves.Both local and global information of the image regularity were obtained by multi-fractal analysis.By applying fractal dimension,the spots on leaf images can be extracted without loosing or introducing any information.The different parts of images are re-analysis by morphology operations to determine the candidate regions of pests.The performance of multi-fractal analysis of whitefly detection is investigated through greenhouse experiments.The experimental results show that the proposed method is robust to noise from light and is not sensitive to the complex environment. 展开更多
关键词 multi-fractal analysis image segmentation pest detection
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