The large-scale urba n orthoimage generation is being deployed in all level government agencies and private sectors. However, the early procedures and algorithms for digital orthoimage generation in the National Digital Orthophoto Program (NDOP) were based on earlier USGS mapping operations, which have not considered the urban case so that the Standard for Digital Orthophoto formulated by USGS ...

The efficiency of national forest monitoring efforts can be increased by the judicious incorporation of ancillary data. For instance, a fixed number of ground plots might be used to inform a larger set of annual estimates by observing a smaller proportion of the plots each year while augmenting each annual estimate with ancillary data in order to reduce overall costs while maintaining a desired...

Improving China's national image in Africa through aid to is one of the important components soft power Africa. Based on Chinese data from 2000-2014, this paper conducts an empirical analysis, and findings show that can significantly improve Africa, but there are some differences impact different types aid, among which ODA more helpful than OOF. Additionally, (statistical heterogeneity or heter...