Yuyan Zhang

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Mental health problems are highly prevalent and appear to be increasing in frequency and severity among the college student population. The upsurge in mobile and wearable wireless technologies capable of intense, longitudinal tracking of individuals, provide valuable opportunities to examine temporal patterns and dynamic interactions of key variables in(More)
Due to the scarcity of the frequency spectrum, coexistence of two systems in adjacent channels is possible if reasonable measures are taken in the network plan and spectrum plan. According to the Chinese and international business applications, mobile and broadcasting services will coexist at ultra high frequency band which means that harmful interference(More)
The mapping relations between different models are the foundation for model transformation in modeldriven software development. On the basis of ontology semantics, model mappings between different levels are classified by using structural semantics of modeling languages. The general definition process for mapping relations is explored, and the principles of(More)
This paper investigates the problem of guaranteed cost control for a class of uncertain distributed delay systems with neutral type. A sufficient condition for the solvability of this problem is obtained. A novel LyapunovKrasovskii functional is constructed to reduce conservatism of the criterion in form of LMIs. Some mathematical techniques are utilized(More)