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At present, researches on theories and methods of data mining and knowledge discovery are in the ascendant, while rough set theory, as an effective way to deal with incomplete, inaccurate data, is attracting many researchers' focus on its successful application in various fields. This paper first introduces the basic knowledge of rough set theory. Combining with the characteristics of text classification...
To solve the obstacle that hinders the development of R&D alliances, using frequency analysis and expert consultancy method, on the basis of balanced score card theory, this paper designs R&D alliance innovation performance evaluation index system which includes 25 index and gives the index normalization method. In addition, combining with the matter-elements-analysis method, the paper designs...
Based on the characteristics of switching power supply, this paper, taking MC34063A IC as the research object, has proposed the design, realized design of single-transistor positive buck DC-DC converter through calculation and component selection, and simulated the circuit of the design using Saber software. When the input voltage is 15V~25V, the output voltage has been stabilized within the scope...
The predecessor of robot is the intelligent remote car, which has SCM as the control core, radio-controlled car as means of communication between man and car, sensors as the car senses etc. The motion of the car determines its prospects of application and range. This paper designs hardware circuitry and software process of intelligent car based on SPCE061A SCM, realize control of motion state of intelligent...
With the rapid development of economic and technology in China, structural forms are becoming more and more complicated, which requires more rigorous construction technology and construction management. However, the risk management in our country is still in its infancy, and managers are short of awareness of risks and lack of ability to manage risks. Study on risk management methods mode of conventional...
The split ratio of the permanent magnet motor is one of the most important design parameters. It can not only influence the motor electrical torque and efficiency, but also can influence the motor thermal behavior. According to the high torque, short duty permanent magnet brushless motor, the thermal behavior should be investigated carefully. In this paper, the influence of the split ratio on the...
This work proposes a distributed sampling design for the signal detection application in the cluster-based wireless sensor networks (WSNs). Considering the energy saving requirement in the cluster-based WSNs, a linear weighting data fusion scheme for data reduction at the cluster head is also developed in this paper. Both the distributed sampling and the data reduction schemes are designed based on...
WiMax mesh network provides a mechanism for creating multi-hop mesh, which can be deployed as high speed wide area wireless network. The routing and scheduling are two key factors that influence the performance of the WiMax mesh networks. In this paper, we introduce cross-layer design scheme and take both routing and scheduling into account in order to improve the performance. A centralized scheduling...
This paper proposes a novel torque control system for the flywheel motor which is applied to the satellite attitude control system. A corresponding novel control method for the four-quadrant operation is introduced. Via this method, the torque stability can be improved, and the torque jumps can be reduced effectively. Analysis and experimental results verify the effectiveness of the system.
Spotlight SAR is an efficiency way to obtain high resolution radar imagery. The non-stability of the aircraft motion during the long synthetic aperture time can make the imagery suffer the sever defocus, and there is phase error in the range direction in the high resolution SAR system. This paper presents a novel signal processing method to get high definition resolution spotlight SAR imagery, which...
Spotlight SAR is an efficiency way to obtain high resolution radar imagery. The classic polar format algorithm (PFA) is the widely used method for spotlight SAR imagery reconstruction, but PFA need two dimension interpolation operation in SAR imaging, which has influence on the imaging precision and computation efficiency. This paper presents a novel polar format Algorithm based on two dimension CZT...
This paper presents the design of a novel wide output current range dual-mode DC to DC step-down (Buck) switching regulator/converter. The converter can adaptively switch between pulse-width modulation (PWM) and pulse-frequency modulation (PFM) both with very high conversion efficiency. Soft start operation is designed to eliminate the excess large current at the start up of the regulator. The chip...
In this paper, we propose a window-based architecture with parallel filtering engine to accelerate the adaptive deblocking filter in H.264/AVC video coding standard. In order to improve overall system performance, we use a configurable 44times32-bit FIFO memory with a novel processing order to simultaneously process the horizontal filtering of vertical edge and vertical filtering of horizontal edge...
In this paper, we study and analyze the computational complexity of deblocking filter in H.264/AVC baseline decoder based on SimpleScalar/ARM simulator. The simulation result shows that the memory reference, content activity check operations and filter operations are known to be very time consuming in the decoder of this new video coding standard. In order to improve overall system performance, we...
Research on event region detection problems in wireless sensor networks (WSN) has received a great amount of interest recently. In these problems, sensor networks are asked to determine where the regions or boundaries in the environment. Each sensor could have its observation coming from its own hypothesis. Sensor nodes in WSN could have different true hypotheses. In this paper, the design of fusion...
In order to assess stereopsis objectively by visual evoked potentials (VEP) measured at the human scalp, dynamic random-dot stereograms (RDS) were generated online on an IBM PC. The stimulus, a rectangular area of certain size with binocular disparity different from its surrounding, was perceived in depth when viewed with a stereoscope (binocularly). Monocularly, only a continuous 'snowstorm' just...
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