the selection of best information system (is) project from many competing proposals is a critical business activity which is very helpful to all organizations. while previous is project selection methods are useful but have restricted application because they handle only cases with precise data. indeed, these methods are based on precise data with less emphasis on imprecise data. this paper pro...

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Engineering and scienti c measurement results of continuous quantities are not precise numbers but more or less non-precise. Therefore so-called non-precise numbers are necessary to describe measurement results. Non-precise numbers are special fuzzy subsets of the set of real numbers. For vector quantities so-called fuzzy vectors are the best up to date model for related measurements.

Haiyang-2D (HY-2D) is the fourth satellite in marine dynamic series established by China. It was successfully launched on 19 May 2021, marking era of 3-satellite network environment The satellite’s precision orbit determination (POD) and validations are great significance for ocean warning altimetry missions. HY-2D equipped with a laser reflector array (LRA), satellite-borne Doppler Orbitograph...