This study compares the usage of the several selected epistemic modals as hedging devices-could,think,you know and maybe-in the corpus of English conversation on asking for/offering advice by a group of Chinese sophomores of English major and in that of the native speakers,i.

On Modal Hedges in EAP —— A Study Based on Corpus;

This paper makes a study on modal hedges in academic discourse as well as their appraisal meanings from the point of view of appraisal theory.

But in practice,there may exist a series of sates between the two limit states,and thus the fuzzy state assumption should be used to replace the binary state assumption.

The theory of fuzzy reliability and the calculation model of fuzzy reliability of the system under a fuzzy state have been established,based on the ideas of system fuzzy state,transition of system fuzzy states,fuzzy probability,etc.

Then the failures of repairable vote systems were classified, the membership functions of the states to fuzzy success were defined and the reliability of repairable vote systems was analyzed by using the reliability theory based on fuzzy state.

Fuzzy Homomorphism of Groups and Isomorphism Theorems of Fuzzy Quotient Groups;

Fuzzy homomorphism and fundamental theorem of fuzzy homomorphism;

The fuzzy mapping is given based on the concept of fuzzy equivalent,and fuzzy homomorphism of groups and characteristics in this mapping state are discussed.