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BACKGROUND As an etiological treatment of trigeminal neuralgia (TN) and hemifacial spasm (HFS), microvascular decompression (MVD) has been popularized around the world. However, as a functional operation in the cerebellopontine angle (CPA), this process can be risky and the postoperative outcomes might not be good enough sometimes. OBJECTIVE In order to(More)
Open-loop unstable systems with time delay are difficult to control using routine control methods. To solve this problem, an improved internal model control scheme, which adds a PD controller to traditional IMC structure, is proposed. Set point tracking performance and robustness can be designed independently. The tuning formula of PD controller is(More)
In this paper, an admission control scheme with priority for real-time traffic is designed, and a discrete time Geo<sub>1</sub> +larr Geo<sub>2</sub>/Geo<sub>1</sub>,Geo<sub>2</sub>/s (preemptive priority) queue model is proposed to study the performance of the multi-traffic admission control scheme, which based on the running mechanism of the wireless(More)
Muzhi (male hemorrhoid) and Pinzhi (female hemorrhoid) recorded in bamboo slips found in the Han Tomb of Zhanjiashan were named after the shape of genitalia of males and females, which conserved the original meaning of Mu (male) and Pin (female). In Wu shi er Bingfang (Formularies for 52 Kinds of Disorders), a silk manuscript found in the Han Tombs of(More)
In this paper we model the base station of multi-channel mobile communication systems with finite user population discrete time queueing system. Using the method of Markov chain we derive the performance index such as probability of loss in one slot, the average throughput of the system, and the utilization ratio of channels. And through the numerical(More)
Grid portal is the entrance which users apply all kinds of grid services. In this paper, it provides architecture of gird portal based on gridport, and discusses the flow of job submission, deploys resource monitoring services, and designs resource allocation algorithm. Finally, it tests the variance ratio of RAM by resources monitoring services and the(More)
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