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Sina Weibo is one of the most popular microblogging website in China. It has more than 500 million registered users and the daily production of posters is over 100 million, with a market penetration similar to Twitter. Mining the useful information from large volume of fragmented short texts is a fundamental but very challenging research work. This paper proposes a method LET(LDA&Entropy&Tex-trank)...
Device-to-Device (D2D) communication operating as an underlay to the cellular network has been lately exploited to facilitate proximity-aware services and data traffic offloading. While D2D communication has great potentials to improve wireless network spectral efficiency and energy efficiency due to the proximity of communication parties and a higher spectrum reuse gain, how to guarantee the coverage...
Based on fast wake-up ONU, an intra-cycle sleep mechanism is proposed to perform energy conservation with little degradation of QoS even under heavy traffic load in 10G-EPON. Both mathematical analysis and comparative simulation are performed.
The ability to retrieve and monitor soil moisture and vegetation water content (VWC) is of great importance. Yet accurate retrieval of such information from microwave observations presents a big challenge, which calls for the development of high fidelity scattering models. In the literature, a ”discrete scatter” approach was usually deployed, which attempted to determine first the scattering behavior...
More and more attention has been paid to the research and application of 3D map as 3D map products visualization conductive to perceive geographic environmental information more intuitively and more clearly. The research on 3D map symbol is one of the core technologies. The data structure and modeling method of the 3D map symbol were studied in this paper. We could get the good expression of 3D symbol...
When applying SIFT algorithm in registration between multi-optical imagery, few matching couples are obtained. Aiming to this problem, a new algorithm named normalized SIFT based on visual matching window and structural information is proposed in this paper. By constructing the visual matching window, the scale similarity and matching probability between SIFT features are significantly increased....
An new model-free adaptive controller (MFAC) is proposed, combining the single output TD (tracking differentiator) with the basic MFAC. The novel TD-MFAC method improves the capacity of anti-jamming because of the filter characteristic of the single output tracking differentiator. Furthermore, TD-MFAC method is compared with PID control method. The simulation results show the model-free adaptive control...
With the competition between enterprises human resource becomes a key to that enterprises acquire the competition advantages and employee training grows into the strategic requirement of enterprise development with playing important roles gradually. In view of the existing fuzziness and randomness in the training effect comprehensive evaluation, an index system, which comprises the first class indices...
Human resources are the primary resources of an enterprise. Personnel training can cultivate core competence and achieve the success. In view of the existing fuzziness and randomness in the training effect comprehensive evaluation, an index system, which comprises the first class indices such as training condition, training management and training effect, was put forward; and then a two stage fuzzy...
The strains of an arbitrary point on the resonator of the hemispherical resonator gyro are deduced under Kirchhoff-Lyav hypothesis. The force equilibrium equations of the thin shell element are established on the basis of the calculated strains. When the gyro is subjected to three-axis angular rates and angular accelerations, the inertia force is calculated and the border motion equations of the hemispherical...
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