Basic standards of information are for all construction work. The formulation for a standard system for housing and real-estate industry information is of great significance to the promotion of the sound development o...Basic standards of information are for all construction work. The formulation for a standard system for housing and real-estate industry information is of great significance to the promotion of the sound development of uniform construction and the transformation of production operations and management mode. This article gives an introduction to the application of information in the housing and real-estate industry, putting forward the consideration and framework for establishing the standard system of housing and the real-estate industry information to meet the needs of actual demands in China.展开更多
The current economic crisis has left numerous residential developments in the southeastern United States in various stages of construction. Many of them are currently graded and essentially abandoned, creating a major...The current economic crisis has left numerous residential developments in the southeastern United States in various stages of construction. Many of them are currently graded and essentially abandoned, creating a major source of sediment runoff to waterways. Residential development locations with significant bare soil areas were identified through classification of Landsat 5 TM satellite imagery and subsequently verified from high-resolution county aerial photographs. The revised universal soil loss equation (RUSLE) was used in a geographic information system (GIS) as a tool for prioritizing identified locations on the basis of potential soil loss assuming the worst case scenario of a completely unmaintained site. Initial GIS identification indicated 301 sites with a total bare soil area of 2 378 ha over three counties in Upstate South Carolina. A random sample of 153 sites was visited over 17 days and assessed using a mobile GIS, global positioning system (GPS), and digital camera for field validation. Results indicated that 78% (119) of the sites were classified correctly (residential construction sites in varying stages of completion); 88% of identified areas were less than 25% built compared to the previous year; 48% were categorized as moderate to severe problems. Abandoned and unfinished developments in Upstate South Carolina may represent a major source of sediment pollution to streams. Well-maintained erosion control devices may be useful in preventing offsite sedimentation.展开更多
文摘Basic standards of information are for all construction work. The formulation for a standard system for housing and real-estate industry information is of great significance to the promotion of the sound development of uniform construction and the transformation of production operations and management mode. This article gives an introduction to the application of information in the housing and real-estate industry, putting forward the consideration and framework for establishing the standard system of housing and the real-estate industry information to meet the needs of actual demands in China.
基金Supported by the South Carolina Water Resources Centerthe Clemson University Public Service and Agriculture Next Generation Graduate Fellowship (PSA-NGGF), USATechnical Contribution No. 5903 of the Clemson University Experiment Station, USA
文摘The current economic crisis has left numerous residential developments in the southeastern United States in various stages of construction. Many of them are currently graded and essentially abandoned, creating a major source of sediment runoff to waterways. Residential development locations with significant bare soil areas were identified through classification of Landsat 5 TM satellite imagery and subsequently verified from high-resolution county aerial photographs. The revised universal soil loss equation (RUSLE) was used in a geographic information system (GIS) as a tool for prioritizing identified locations on the basis of potential soil loss assuming the worst case scenario of a completely unmaintained site. Initial GIS identification indicated 301 sites with a total bare soil area of 2 378 ha over three counties in Upstate South Carolina. A random sample of 153 sites was visited over 17 days and assessed using a mobile GIS, global positioning system (GPS), and digital camera for field validation. Results indicated that 78% (119) of the sites were classified correctly (residential construction sites in varying stages of completion); 88% of identified areas were less than 25% built compared to the previous year; 48% were categorized as moderate to severe problems. Abandoned and unfinished developments in Upstate South Carolina may represent a major source of sediment pollution to streams. Well-maintained erosion control devices may be useful in preventing offsite sedimentation.
