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Spatial data integration and fusion is an important research field in Geographical Information Science. The key of integration and fusion of spatial data lies in automated recognition and matching of homonymous features. This article concludes the spatial location matching relationships among the homonymous linear entities. Linear entity matching algorithm based on multi-steps buffer analysis is presented...
In commonsense geographical cognition, people adopt qualitative methods to express geographical phenomenon in natural language. But it lacks quantitative approximate expression by this way, so could not describe the geographical entity with uncertain boundary. In daily life, people can ascertain one uncertain geographical entity's position through an anchor point, but cannot explain its certain geography...
RTEMS uses the heap manager, the partition manager and the region manager to manage memory. A partition is a physically contiguous memory area divided into fixed-size buffers that can be dynamically allocated and deal located. A region provides facilities to dynamically allocate and free memory in variable sized units. RTEMS memory management is insecure because the data structure of managing memory...
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