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The value of diffusion tensor imaging (DTI) was investigated in the cerebral white matter microstructural abnormalities in patients with first-episode depression. Thirteen patients with first-episode depression and fourteen age- and gender-matched healthy volunteers were performed DTI. The apparent diffusion coefficient (ADC) and fractional anisotropy (FA) of prefrontal lobe deep white matter, the...
An edge detection algorithm based on improved Rotating Kernel Transformation, IRKT edge detection method (IRKTE), is proposed in this paper. The algorithm adopt the line detection approach RKT, and defines a new model of edge detection according to the direction difference between edge and smooth regions. Simultaneously, an accurate edge location approach based on edge normal direction is presented...
MIL-STD-1553 is a data bus that served the needs of military system for over 35 years. Contemporary applications require much higher data rates than 1553's 1 megabit-per-second data rate. In this paper, a method for increasing the 1553's transmission speed in existing 1553 networks is explored and implemented. The method combines Discrete Multitone (DMT) modulation and 1553 network, and uses a new...
With the rapid development of modern avionics system, traditional MIL-STD-1553 bus cannot meet the requirements of high-speed communication. In this paper, a method of improving the transmission rate of the avionics bus is purposed by implementing a Discrete Multitone (DMT) interface over existing MIL-STD-1553 bus. Physical layer and analog front end (AFE) are designed and analyzed in detail. This...
Directional listening tests are an integral part of overall psychoacoustic evaluation of spatial rendering systems as well as general audiological evaluation. A new test paradigm is proposed, where, to reduce the effect of mapping bias, a 3D perspective plot of the visual scene is provided to the listener. Both visual and acoustic stimuli are used to evaluate the proposed technique against an approach...
This paper designs an embedded driver system for USB mouse based on AT89S52 single chip microcomputer. The AT89S52 controls the main control chip of USB, SL811HS to realize the function of controlling USB mouse. The hardware gives the principle diagram of this system. The software introduces the implementation principle and realization of USB bus resetting, device inserted action detection, device...
The code timing acquisition problem of bandlimited long-code based DS-CDMA systems operating in doubly-selective time-varying multipath channels is considered. We extend the unstructured schemes proposed by Buzzi <etal/> to long-code spreading, which first estimates the Symbol Weighted Composite Channel Impulse Response (SW-CCIR) vectors and then extracts the timing informations. We also propose...
To get the transient state performance, the mathematics model of three-phase double-cage induction motors was proposed in dq0 stationary reference frame, and the actual implementation of model was explained in detail with the help of MATLAB/SIMULINK. Another, the model of power source reversal connections was established by means of MATLAB/SIMULINK. These models were applied to emulate transient process...
Hydrogen producing bacterium Ethanoligenens harbinense R3 was separated from the anaerobic activated sludge in a continuous stirred tank reactor. Hydrogen production performance was studied by batch culture hydrogen producing bacteria Ethanoligenens harbinense R3 using straw as a substrate. Straw was pretreated by different concentrations of sulfuric acid and sodium hydroxide, and the result indicated...
This paper studies the dynamic output-feedback Hinfin control for continuous-time descriptor systems based on the linear matrix inequality (LMI) approach. Derivation of a sufficient condition for the existence of a dynamic output feedback control construction of it based on the LMI solution parameters. A simple design method of the output feedback control is presented. A numerical example is also...
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