Land use & land cover change detection in rapid growth urbanized area have been studied by many researchers and there are many works on this topic. Commonly, settlement sprawl in area depends on many factors such ...Land use & land cover change detection in rapid growth urbanized area have been studied by many researchers and there are many works on this topic. Commonly, settlement sprawl in area depends on many factors such as eco-nomic prosperity and population growth. Iraq is one of the countries which witnessed rapid development in the settlement area. Remote sensing and geographic information system (GIS) are analytical software technologies to evaluate this familiar worldwide phenomenon. This study illustrates settlement development in Sulaimaniyah Governorate from 2001 to 2017 using Landsat satellite imageries of different periods. All images had been classified using remote sensing software in order to proceed powerful mapping of land use classification. Maximum likelihood method is used in the accurately extracted solution information from geospatial imagery. Landsat images from the study area were categorized into four different classes. These are: forest, vegetation, soil, and settlement. Change detection analysis results illustrate that in the face of an explosive demographic shift in the settlement area where the record + 8.99 percent which is equivalent to 51.80 Km2 over a 16-year period and settlement area increasing from 3.87 percent in 2001 to 12.86 percent in 2017. Accuracy assessment model was used to evaluate (LULC) classified images. Accuracy results show an overall accuracy of 78.83% to 90.09% from 2001 to 2017 respectively while convincing results of Kappa coefficient given between substantial and almost perfect agreements. This study will help decision-makers in urban plan for future city development.展开更多
某金矿对分级细尾砂进行旋流分级,得到+37μm含量25%以下、-19μm含量60%以上的超细尾砂。基于该两段分级超细尾砂开展了室内静态絮凝沉降试验和半工业浓密试验。静态沉降试验分析了砂浆浓度、絮凝剂单耗对絮团沉降行为的影响,试验发现...某金矿对分级细尾砂进行旋流分级,得到+37μm含量25%以下、-19μm含量60%以上的超细尾砂。基于该两段分级超细尾砂开展了室内静态絮凝沉降试验和半工业浓密试验。静态沉降试验分析了砂浆浓度、絮凝剂单耗对絮团沉降行为的影响,试验发现絮团沉降速度随着砂浆浓度的增加而减小,而絮凝剂单耗存在最优值,高于或低于该值,絮团沉降速度反而变慢。半工业浓密试验探究了泥层高度对浓密的影响,研究了固体通量对溢流水含固量和底流浓度的影响,试验结果表明:泥层高度与浓密的底流浓度呈非线性,底流浓度随着泥层高度的增加呈先增大后最终趋于平稳;随着固体通量的增加,溢流水含固量逐渐增大,而底流浓度与固体通量呈线性负相关。试验数据成功应用到1000 m ^(3)无动力高效浓密机,实现了工业应用。展开更多
文摘Land use & land cover change detection in rapid growth urbanized area have been studied by many researchers and there are many works on this topic. Commonly, settlement sprawl in area depends on many factors such as eco-nomic prosperity and population growth. Iraq is one of the countries which witnessed rapid development in the settlement area. Remote sensing and geographic information system (GIS) are analytical software technologies to evaluate this familiar worldwide phenomenon. This study illustrates settlement development in Sulaimaniyah Governorate from 2001 to 2017 using Landsat satellite imageries of different periods. All images had been classified using remote sensing software in order to proceed powerful mapping of land use classification. Maximum likelihood method is used in the accurately extracted solution information from geospatial imagery. Landsat images from the study area were categorized into four different classes. These are: forest, vegetation, soil, and settlement. Change detection analysis results illustrate that in the face of an explosive demographic shift in the settlement area where the record + 8.99 percent which is equivalent to 51.80 Km2 over a 16-year period and settlement area increasing from 3.87 percent in 2001 to 12.86 percent in 2017. Accuracy assessment model was used to evaluate (LULC) classified images. Accuracy results show an overall accuracy of 78.83% to 90.09% from 2001 to 2017 respectively while convincing results of Kappa coefficient given between substantial and almost perfect agreements. This study will help decision-makers in urban plan for future city development.
文摘某金矿对分级细尾砂进行旋流分级,得到+37μm含量25%以下、-19μm含量60%以上的超细尾砂。基于该两段分级超细尾砂开展了室内静态絮凝沉降试验和半工业浓密试验。静态沉降试验分析了砂浆浓度、絮凝剂单耗对絮团沉降行为的影响,试验发现絮团沉降速度随着砂浆浓度的增加而减小,而絮凝剂单耗存在最优值,高于或低于该值,絮团沉降速度反而变慢。半工业浓密试验探究了泥层高度对浓密的影响,研究了固体通量对溢流水含固量和底流浓度的影响,试验结果表明:泥层高度与浓密的底流浓度呈非线性,底流浓度随着泥层高度的增加呈先增大后最终趋于平稳;随着固体通量的增加,溢流水含固量逐渐增大,而底流浓度与固体通量呈线性负相关。试验数据成功应用到1000 m ^(3)无动力高效浓密机,实现了工业应用。
