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关于装填布局的界及空间损失的分析
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作者 杨传民 王树人 王心宇 《机械设计》 CSCD 北大核心 2007年第12期39-42,共4页
重点研究了长方形和长方体装填布局输出最大化问题的界和空间损失,并进行实例分析。提出了一种较严格的上界;将空间损失分为3种:尺寸选择误差、装填结构误差、理论误差。理论误差是不可避免的;尺寸选择误差与尺寸选择有关,当尺寸选定后... 重点研究了长方形和长方体装填布局输出最大化问题的界和空间损失,并进行实例分析。提出了一种较严格的上界;将空间损失分为3种:尺寸选择误差、装填结构误差、理论误差。理论误差是不可避免的;尺寸选择误差与尺寸选择有关,当尺寸选定后也是不可避免的;而对于选定尺寸后的装填布局,装填结构误差与装填方法有关,是应主要研究的方面,装填方法优化的结果接近文中较严格的上界时应是较好的装填方法。 展开更多
关键词 装填布局 利用率 较严格上界 空间损失分析
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Application Geospatial Technology in Disaster Management
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作者 Behzad Nadil Ahmad Rodzi Mahmud +3 位作者 Noordin Ahmad Abdul Rashid Shariff Abdolkhalegh Arvinpili Seyedabdolvahid Hosseinzadeh 《Journal of Environmental Science and Engineering》 2010年第1期65-69,共5页
Disasters including natural and manmade make heavy losses in life and property each year. This subject can affect society, economy, and environment and can be a serious threat for development. In 10 years ago over 200... Disasters including natural and manmade make heavy losses in life and property each year. This subject can affect society, economy, and environment and can be a serious threat for development. In 10 years ago over 200 million people are have been effected both life and property. This figure is seven times more than losses in war. After the earthquake in Bam (a city in south Iran), tsunami in south-eastern of Asia, fire in Australia, and other disasters, the management of disaster has been considered more than before. They have tried to use all facilities and equipment for reduction of disaster damage. Over 80% of necessary data in disaster management are spatial data. Spatial data and advanced technologies have an important role in disaster management because Geographic Information System (GIS) can help in identifying disaster points. GIS combines geospatial data, and hardware, software that can analyze data to produce information. GIS mainly involves saving and analysis of data according to spatial and attribute data. GIS can combine and analyze spatial and non-spatial data .We have made an attempt to consider disasters management according to facilities and role of Geospatial Technology in control of disaster (especially earthquake). 展开更多
关键词 Management of disaster GEOSPATIAL EARTHQUAKE 3D GIS.
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