An expert system developed for use with geologic materials (minerals) has been modified to more generally analyze spectra of all types of materials, including manmade materials, military targets, and background. The methodology requires reflectance spectra, but can also be extended to emissive measurements in the mid-wave infrared (MWIR) and long-wave infrared (LWIR). The spectra of known mater...

Guangxi Province is one of the regions more serious desertification. This paper using ENVI image processing system, according to remote sensing image interpretation target mark and image spectral characteristics, found remote sensing interpretation model of the background information of forest, shrub and grass, agricultural land, surface water, towns, roads from TM and ETM data from 1988 to 200...

It is an important way that some remote sensing images of different spatial and spectral resolutions are fused to satisfy the requirement of general application. In order to achieve a good fusion result, low spatial spectral images should be resampled. At present, nearest neighbor resampling is often adopted which has some effects on the precision of new image. In this paper, an image fusion me...

A multiresidue analysis of pesticides in tea using supercritical fluid extraction (SFE) and GC-MS was developed. The preprocessing using SFE shortened the total analysis time. The SFE extract contained less matrices than the extract obtained with organic solvents. However, these matrices disturbed instrumental analysis. So, the extract was cleaned up with ENVI™-Carb/NH2 and InertSep™ SI cartrid...

The paper describes an approach to reason ing about actions and plan generation within the framework of description logics From an epistemological viewpoint our approach is based on the formalization of actions given by dynamic logics but we exploit their corre spondence with description logics to turn the formalization into an actual implementation In particular we are able to carefully weaken...

'Dynamic hypertext ' is hypertext which is automatically generated at the point of need. A number of NLG systems have now been developed to operate within a hypertext environment; and now that these systems are becoming widely available on the World Wide Web, it is useful to take stock of how well-equipped NLG technology is to work in this new domain. A generation system in a hypertext environm...

In this paper we consider processing entity join queries in a wide area multidatabase environmen t where the query processing cost is dominated by the cost of data transmission An entity join oper ation integrates tuples representing the same en tities from di erent relations in which inconsistent data may exist The semijoin technique has been successfully used in a distributed database system ...