An effective non-contact electrostatic detection method is used for human body motion detection. Also, a model for human body induced potential by stepping has been proposed. Furthermore, experiment results also prove...
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Detection mechanism of capacitance proximity fuze is the base of fuze design work. Electric field and circuit methods are used to calculate the potential proportional relationship between the two electrodes. The poten...
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In order to study noise emitted by metro train, the experiment is carried out in the test line of Shenzhen Metro Line 1. It can be concluded that the noise outside the metro train is mainly middle and low frequency;th...
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When using conventional methods to detect human body face, there will always be several problems, such as high false alarm rate, the existence of blind corners and complex design. In this paper, an effective non-conta...
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The sawtooth instability is a repetitive phenomenon occurring in plasmas of tokamak nuclear fusion reactors. Experimental studies of these instabilities and the effect they have on the plasma (notably the drive of sec...
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ISBN:
(纸本)9781457710957
The sawtooth instability is a repetitive phenomenon occurring in plasmas of tokamak nuclear fusion reactors. Experimental studies of these instabilities and the effect they have on the plasma (notably the drive of secondary instabilities and consequent performance reduction) for a wide variety of plasma conditions is an important line of study in nuclear fusion research. Variations in the plasma conditions have a significant influence on the dynamical behavior of the sawtooth instability. Therefore, this paper presents the design of a sawtooth period controller which is robust against such variations. The controller is from a class of adaptive controllers better known as extremum seekers. In this technique, a cost function in terms of the desired sawtooth period is optimized on-line. The Extremum Seeking controller (ESC) is model-free and is therefore inherently robust against model uncertainty. Simulations show that the controller is robust against variations in plasma parameters, delay in the sawtooth crash detection, and noise on the in- and outputs of the process. Because of its robustness, ESC is a promising candidate strategy for a wide range of fusion-related control problems with high model uncertainty.
Wireless capsule endoscopy (WCE) views the entire gastrointestinal (GI) tract. A main problem associated with this novel device is that too many frames must be reviewed by physicians. Thus it is essential to find an a...
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Wireless capsule endoscopy (WCE) views the entire gastrointestinal (GI) tract. A main problem associated with this novel device is that too many frames must be reviewed by physicians. Thus it is essential to find an automatic and intelligent method to help physicians. One of the problems in WCE is its difficulty to distinguish among different organ's tissues. So, we introduce two novel algorithms which are able to classify main organs (among esophagus, stomach, small bowel and colon) in WCE's frames. In order to obtain our aim, we use statistic features (Haralick features) and non-statistic features (different diagrams and Gabor filter banks), colored features and non-colored features. Our experimental studies indicate good results that are shown in conclusion.
For off-shore wind energy plants (OWEP) inspection, maintenance and repair is much more difficult and more expensive compared to on-shore plants. Therefore, SHM has large potential in this field of application. Wind l...
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In previous studies, experimentally measured resonance frequencies of carbon nanotubes have been used along with classical beam theory for straight beams. However, it is found that these carbon nanotubes are not strai...
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This article analyses the decision behavior of hospitals in the most competitive health service market under the Approved Hospital Regulation System (AHRS) according to the economic game theory. We induces that hospit...
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