Vehicle management is a very important application area of GPS/GIS. Each customer has its special requirements on GIS system when he installs it. We discuss a common structure of our GPS/GIS implementation, and presen...Vehicle management is a very important application area of GPS/GIS. Each customer has its special requirements on GIS system when he installs it. We discuss a common structure of our GPS/GIS implementation, and present a case study on bulk concrete trucks management for bulk concrete producers. With GPS/GIS system, bulk concrete producers can improve their performance in scheduling and management.展开更多
This paper introduced the theory and approaches of building driving forcemodels revealing the changes in land utilization level by integrating RS, GPS, and GIS technologiesbased on the example of Yuanmou County of Yun...This paper introduced the theory and approaches of building driving forcemodels revealing the changes in land utilization level by integrating RS, GPS, and GIS technologiesbased on the example of Yuanmou County of Yunnan Province. We first created the land utilizationtype database, natural driving forces for land utilization database, and human driving forces forland utilization database. Then we obtained the dependent and the independent variables of changesin land utilization level by exploring various data. Lastly we screened major factors affectingchanges in land utilization level by using the powerful spatial correlation analysis and maincomponent analysis module of GIS and obtained a multivariable linear regression model of thechangesin land utilization level by using GIS spatial regression analysis module.展开更多
In the paper the simplified three-dimensional turbulent diffusion equation ofthe suspended load is deduced by the power series method. The formula on the transversedistribution of the suspended load concentration is o...In the paper the simplified three-dimensional turbulent diffusion equation ofthe suspended load is deduced by the power series method. The formula on the transversedistribution of the suspended load concentration is obtained, which is tested by a few field data onYangtze River. The simulation results indicate that the calculated data are in primary agreementwith the field data within the allowable error. It is certain value in theory and practice.展开更多
This study is an attempt to investigate to what extent different learning contexts inform syntax acquisition of Chinese adult learners of English. The research was conducted in London and Chongqing within a different ...This study is an attempt to investigate to what extent different learning contexts inform syntax acquisition of Chinese adult learners of English. The research was conducted in London and Chongqing within a different framework that acknowledges the role of context from a perspective of the general theory of second language acquisition. Issues展开更多
基金This work is supported in part by Chongqing Science Fund # 774 2 - 4 China and by U niversity ITResearch Center ProjectKorea
文摘Vehicle management is a very important application area of GPS/GIS. Each customer has its special requirements on GIS system when he installs it. We discuss a common structure of our GPS/GIS implementation, and present a case study on bulk concrete trucks management for bulk concrete producers. With GPS/GIS system, bulk concrete producers can improve their performance in scheduling and management.
文摘This paper introduced the theory and approaches of building driving forcemodels revealing the changes in land utilization level by integrating RS, GPS, and GIS technologiesbased on the example of Yuanmou County of Yunnan Province. We first created the land utilizationtype database, natural driving forces for land utilization database, and human driving forces forland utilization database. Then we obtained the dependent and the independent variables of changesin land utilization level by exploring various data. Lastly we screened major factors affectingchanges in land utilization level by using the powerful spatial correlation analysis and maincomponent analysis module of GIS and obtained a multivariable linear regression model of thechangesin land utilization level by using GIS spatial regression analysis module.
文摘In the paper the simplified three-dimensional turbulent diffusion equation ofthe suspended load is deduced by the power series method. The formula on the transversedistribution of the suspended load concentration is obtained, which is tested by a few field data onYangtze River. The simulation results indicate that the calculated data are in primary agreementwith the field data within the allowable error. It is certain value in theory and practice.
文摘This study is an attempt to investigate to what extent different learning contexts inform syntax acquisition of Chinese adult learners of English. The research was conducted in London and Chongqing within a different framework that acknowledges the role of context from a perspective of the general theory of second language acquisition. Issues
