Danyang Wang

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—Particle Swarm Optimization (PSO) has shown good search ability on many optimization problems. However, PSO easily suffers from local optima on some complex problems, such as multimodal function problems. This paper presents an improved PSO, namely IPSO, which employs an adaptive chaotic mutation operator. The adaptive mutation adjusts the step size of(More)
In this paper, a new cognitive radio (CR) scenario called Multiple Primary Transmit Power (MPTP) is investigated where the primary user (PU) could possibly work on more than one discrete transmit power levels. Different from most existing literatures where PU is assumed to operate with a constant transmit power only, this new consideration well matches the(More)
The objectives of this study are to establish the in vitro culture system for rat primary ameloblast and to investigate the effects of fluoride on cell viability, apoptosis, and ameloblastin (AMBN) secretion of primary rat ameloblast in vitro. Ameloblast was isolated from the tooth germ of the maxillomandibular molar and cultured in vitro. Cells were(More)
Selective inhibitors of the human serotonin transporter (hSERT) have been first-line treatment against depression for several decades. Recently, vortioxetine was approved as a new therapeutic option for the treatment of depression. Vortioxetine represents a new class of antidepressant drugs with a multimodal pharmacological profile that in addition to(More)
Accurate data acquisition and processing is important to analyze the experimental results and research the theories of grain drying. Experiments of grain drying in a deep fixed-bed usually have characteristics of long period, difficult dynamic signal acquisition, large amount of experimental data and cockamamie data processing, etc. Aiming at the(More)
In this paper, we investigate a robust spectrum sensing scheme using multiple antennas, which exploits the information of eigenvalues' characteristics of the sample covariance matrix. The difference between the maximum eigenvalue and the average of the remainder eigenvalues of sample covariance matrix is utilized as the test statistic. Besides, by(More)