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Based on customer relationship management system of ShanHua carpet company, this paper introduces an improved data mining association rules Apriori algorithm and its deployment to Shanhua group Cross-selling analysis. The deployment of the Apriori algorithm deletes lots of invalid business, reduces the records for the following scanning, which raises the(More)
As farmland systems vary over space and time (season and year), accurate and updated maps of paddy rice are needed for studies of food security and environmental problems. We selected a wheat-rice double-cropped area from fragmented landscapes along the rural-urban complex (Jiangsu Province, China) and explored the potential utility of integrating time(More)
Knowledge of the area and spatial distribution of paddy rice is important for assessment of food security, management of water resources, and estimation of greenhouse gas (methane) emissions. Paddy rice agriculture has expanded rapidly in northeastern China in the last decade, but there are no updated maps of paddy rice fields in the region. Existing(More)
Accurate and timely rice paddy field maps with a fine spatial resolution would greatly improve our understanding of the effects of paddy rice agriculture on greenhouse gases emissions, food and water security, and human health. Rice paddy field maps were developed using optical images with high temporal resolution and coarse spatial resolution (e.g.,(More)
Accurate and up-to-date information on the spatial distribution of paddy rice fields is necessary for the studies of trace gas emissions, water source management, and food security. The phenology-based paddy rice mapping algorithm, which identifies the unique flooding stage of paddy rice, has been widely used. However, identification and mapping of paddy(More)
The resources of campus network are increasing quickly. This formed the "isolated island of information ", but the appearance of Grid technique has resolved this problem. According to the campus network of author's university, this paper proposes a solution that can reform the network into Grid by minimum cost. The solution has made the real share and(More)
Security and privacy is a big problem that feazing computer researchers all along. In the pervasive computing, because the traditional methods of user authorization and access control are no longer adapted, the security and privacy becomes much more difficult to ensure. This paper proposes a dynamic trust model based on P2P. In this paper we call the trust(More)
Updated extent, area, and spatial distribution of tropical evergreen forests from inventory data provides valuable knowledge for research of the carbon cycle, biodiversity, and ecosystem services in tropical regions. However, acquiring these data in mountainous regions requires labor-intensive, often cost-prohibitive field protocols. Here, we report about(More)