Multiset concepts in two-universe approximation spaces

Abstract Rough set theory over two universes is a generalization of rough set model to find accurate approximations for uncertain concepts in information g fuel spiderverse systems in which uncertainty arises from existence of interrelations between the three basic sets: objects, attributes, and decisions.In this work, multisets are approximated in

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Spontaneous combustion of coals and coal-shales

Spontaneous combustion of coal is a turbosound ts-18sw700/8a well-known phenomena around the globe.Apart from the coal itself, burning coal-shales is becoming a problem in the South African coal mines.Serious incidents of spontaneous combustion have been reported as a result of self-heating of reactive coal-shales.The intrinsic properties and spont

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A SBM-DEA based performance evaluation and optimization for social organizations participating in community and home-based elderly care services.

The community and home-based elderly care service system has been proved an effective pattern to mitigate the elderly care dilemma under the background of accelerating aging in China.In particular, the participation of social organizations in community and home-based elderly care service has powerfully fueled the multi-supply of elderly care.As the

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