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Cognitive radio (CR) systems have been proposed to efficiently exploit the spectra that have been assigned to the primary network but are in underutilization. In this paper, we consider the guard channel policy where certain number of channels is dedicated to primary network calls and the policy in which this number of channels is dynamically adapted to the(More)
Laser acupuncture is defined as the stimulation of traditional acupuncture points with low-intensity, non-thermal laser irradiation. It has been well applied in clinic since the 1970s; however, some traditional acupuncture manipulating methods still cannot be implemented in the design of this kind of instruments, such as lifting and thrusting manipulating(More)
Through the research on the traveling wave transform characteristics of the current transformers (CTs), a description method is proposed by using transfer function to replace the phase- and amplitude-frequency characteristics of the current transformers. In the presented technique, the free alternating current of various frequencies is injected into the(More)
A study of engine performance characteristics and both of regulated (CO, HC, NO(x), and smoke) and unregulated (ultrafine particle number, mass concentrations and size distribution) emissions for a turbocharged diesel engine fueled with conventional diesel, gas-to-liquid (GTL) and dimethyl ether (DME) fuels respectively at different engine loads and speeds(More)
By adopting a continuation approach, the position analyses of a novel 3-5R parallel mechanism, which has three translation degrees of freedom, are conducted. Next, an equation system of the mechanism structure constraint and an initial equation system are established. Next, a versatile software for solving polynomial equation system is compiled. As giving(More)
Marine engine room’s unmanned monitoring is the basic requirement for modern ship steering and control. The definition, developmental trend and the monitoring requirements of unmanned marine engine room are introduced. Take a practical application in the marine engine room as an example; the components of the unmanned monitoring system are analyzed.(More)
DNA computation is a new computing model with high performance in storage of DNA molecules and parallelism of biochemical reactions, but it needs complex conditions of biochemical operation, likely astable and uncontrollable. The main work of this paper is optimizing GN algorithm to solve a graph clustering question on social networks, which simulated on(More)
Support Vector Machines (SVM) represents a new and very promising approach to pattern recognition based on small dataset. The approach is systematic and properly motivated by Statistical Learning Theory (SLT). Training involves separating the classes with a surface that maximizes the margin between them. An interesting property of this approach is that it(More)
In this paper, a new SLAM solution for unmanned ground vehicle (UGV), based on the combination of extended Kalman filter (EKF) and unscented Kalman filter (UKF), is proposed. The EKF is used to calculate incremental motion parameters of UGV according to the raw data acquired from both IMU and vehicle sensors, while the UKF to simultaneously estimate the(More)
In traditional acupuncture, reinforcement and reduction are conducted to stimulate the channel Qi by puncturing or heating the points with specific manners so as to regulate the functional activities of the internal organs. Reinforcement and reduction manners played an important role in clinical practice of traditional Chinese medicine, especially in(More)