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Formation Micro Imager (FMI) can directly reflect changes of wall stratum and rock structures. It is also an important method to divide stratum and identify lithology. However, people usually deal with FMI images manually, which is extremely inefficient and may incur heavy burdens in practice. In this paper, with characteristics of rock structures from FMI images, we develop an efficient and intelligent...
In this paper, we investigate the impact of the non-numerical information on exchange rate changes and that of ensemble multiple classifiers on forecasting exchange rate between U.S. dollar and Japanese yen. We first engage the fuzzy comprehensive evaluation model to quantify the non-numerical fundamental information. We then design a single classifier, addressing the impact of exchange rate changes...
This study mainly focuses on the backstepping control (BSC) strategy design, including a traditional backstepping control (TBSC) and an adaptive backstepping control (ABSC) for a current control and a voltage control scheme in a maglev position control system, respectively. In the ABSC system, an adaptive estimation for the lump uncertainty is proposed to ensure the system stability. On the other...
In this paper, a micro jet impingement structure is proposed to realize effectively heat transfer of high power integrated LED array. Based on water cooling technology with double inlets and outlets, an 800W power lighting system structure model is established by using Engineering Fluid Dynamics (EFD) software, the maximum working temperature of the model is lower than 42.3455°C when the shell structure,...
In this paper, a system identification method based on BP-network is proposed to realize the study of dynamic characteristics of high power LED luminaire. LED input-output characteristic relations are obtained according to the lighting system structure, and response curves are received using the method of input isolation. A Back Propagation network model is established to simulate input and output...
In ensemble learning, a higher accuracy can be achieved by integrating some classifiers instead of all the classifiers. But, it is very difficult to select the best classifier combination which can be seen as an optimization problem, from a pool of classifiers. To deal with this problem, we propose a new classifier selection method, Sorting-based Dynamic Classifier Ensemble Selection (SDES), which...
For temperature drift in the ultra-high speed photoelastic modulation interferometer, a control model with temperature compensation is presented including the voltage and phase compensation. First, according to the similar and modeling theory, an equivalent circuit of mechanical properties of the ultra-high speed photoelastic modulation interferometer is established. The impact on its resonance frequency...
In order to overcome the disadvantage of Kemp-type photo-elastic modulator such as low modulation efficiency, strict match size, bulky et al., we proposed a photo-elastic modulate mode which use LiNbO3 crystal piezoelectric properties to produce the effect of the photo-elastic. According to the theory of piezoelectric vibration and Crystal optics principle, we analyzed the crystal orientation dependence...
With the unique features of low gas temperatures, low breakdown/discharge voltages and high concentrations of chemically reactive species, radio-frequency, atmospheric-pressure glow discharge (RF APGD) plasmas produced using a water-cooled bare-metallic electrode plasma generator configuration have been used widely in the fields of plasma-based etching, deposition, disinfection/sterilization of heat-sensitive...
Atmospheric-pressure cold plasma jets are very useful tools for the advanced materials processing due to their outstanding features, such as low gas temperature, high concentrations of chemically reactive species, flexible operation procedures, resulting from the vacuum-free configuration of the plasma generation system and the separation of the discharge region and the materials treatment region...
Due to the outstanding features of the radio-frequency atmospheric-pressure glow discharge (RF PAGD) plasma sources produced using a plasma generator with a pair of water-cooled bare-metallic electrode configuration, such as the low capital cost, low and controllable gas temperature, high number densities of chemically reactive species, flexible operation procedure, etc., it would have bright prospects...
Topic relevance of pages and hyperlinks is the key issue in focused crawling. In this paper, an improved topic relevance algorithm for focused crawling is proposed. First, we implement a prototype system of the focused crawler - a topic-specific news gathering system which is prepared for comparative experiments on different similarity measures with the anchor text. Second, experiments on Chinese...
Today, more and more foreigners go to China and are emerged into studying Chinese. Thereinto, how to write Chinese characters is a very important and difficult task. As computers and internets develop, many teachers for Chinese Education want to use pattern recognition technologies to automatically evaluate and direct the quality of Chinese characters written by foreign students through document scanning...
This work simulates lateral motion in magnetic levitation (maglev) transportation systems using a novel electromagnetic guidance device. First, current control modules, a pulse-width-modulation (PWM) controller and buck converter, are used for driving electromagnets. The electromagnetic guidance system, which has two current control modules, a gap controller, and a bipolar switching mechanism, controls...
In this paper, an intelligent recognition system of phacoemulsification instrument is developed to solve some defects of current phacoemulsification cataract surgery, such as low automatic level of operation, over reliance on the ability of surgeons. The system, which utilizes pattern recognition technologies, can automatically analyze the video information of the operation process, track the emulsification...
Wireless sensor networks have experienced world-wide explosive interests in recent years, which consist of large populations of wirelessly connected nodes, capable of computation, communication, and sensing. Sensor nodes cooperate in order to merge individual sensor readings into a high-level sensing result, such as integrating a time series of position measurements into a velocity estimate. The physical...
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