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It is said by a famous Chinese entrepreneur Jack Ma that which understands yourself the most is not your own but the computer. It is not difficult to find that the computers will always automatically recommend something for you. How do these things come from? It is the computer system which does the statistical analysis to your Internet habits, sorts out the content you may want to browse, and finally...
This paper proposes a method to estimate the unknown angular location of a bi-static multiple input multiple output (MIMO) radar target in the low angle scenario. The multipath model is formulated, in which the specular reflection is treated as an image target and the diffuse reflection is taken as spatial correlated stationary Gaussian noise. Based on this model, the colored noise is cancelled by...
UWB (ultra-wide-band)-based wireless localization technology for a substation inspection robot is studied and the inspection robot system is designed. The localization algorithm with weighted K nearest neighbors is proposed. The localization experiments of inspection robot are carried out in this paper. The results show that the performance of the proposed algorithm is optimal by comparison with triangular...
Transition inversion coding (TIC) can reduce serial bus power dissipation by negating the even-numbered bits of a data word if the number of transitions in the data word is larger than half its word length. The codewords generated by TIC also enable up to a certain error detection rate. This paper proposes a method called PTIC that uses a parity bit along with TIC to achieve 100% single-bit error...
Series resonance between capacitance and line inductance may magnify background harmonic voltage and worsen the harmonic voltage distortion in power systems. To solve this problem, in this paper, the transmission line theory is used to set up the distributed parameter model of power system feeders, and analyze the harmonic voltage propagation caused by the background harmonic voltage in power systems...
For the problem of attitude estimation of drumstick in strenuous exercise, a detailed analysis of the attitude estimation process of complementary filter is done and the difficult issues during this process are proposed. The old attitude estimation based on complementary filter algorithm is improved. Experimental results show out that Betterment of attitude estimation based on complementary filter...
This paper selects the listed companies in Shanghai and Shenzhen market as samples which deficit only one year since 2005. According to the years of sustained losses in the subsequent years, these samples can be divided into “companies facing delisted warning” 1,2 and “companies suspending listing” 3. Then this paper analyzes and researches the propping of controlling shareholders by paired analysis...
This paper describes the function, hardware and software design of structural defect nondestructive testing (NDT) system of a certain unmanned aerial vehicle (UAV) airframe, and analyzes the key technology in the detection system.
Organic Light Emitting Diode (OLED) has emerged as the new generation display technique for mobile multimedia devices. Compared to existing technologies OLEDs are thinner, brighter, lighter, and cheaper. However, OLED panels are still the biggest contributor to the total power consumption of mobile devices. In this work, we proposed a fine-grained dynamic voltage scaling (FDVS) technique to reduce...
The time-varying relevant bivariant normal copula model is applied to study the comovement between representative warrants and their underlying stocks in Mainland China's stocks market. The results indicate that there's a quite strong positive comovement between the call warrants and the underlying stocks during the entire duration, while this comovement weakens on the last trading day; As for the...
Traditional active power filter (APF) can prevent harmonic current from injecting into power system, but can not damp harmonic propagation in distribution system whereas voltage detection can do. This paper proposes a compound control method of APF based on detection of load current and harmonic voltage at the point of installation. In addition, based on the relationship between the rated volt-ampere...
The existing indoor positioning systems can't adapt to the environmental variations well, as it needs an accurate signal propagation model, which is acquired from the users in advance. A novel environmental-adaptive Received Signal Strength Index (RSSI) based indoor positioning approach using Radio Frequency Identification (RFID) is proposed in this paper, that is the signal propagation model and...
Take the evaluation model combined with gray and rough set theory to carry out a comprehensive evaluation for distance education. It calls for data mining for historical decision-making data according to rough set theory and then gets all attributespsila important degree through attribute reduction, and also gets every indexpsilas weight. Then, determine the results of the sample, and unify the measure...
This paper represents the information flow of the system with information flow graph (IFG). If constructing the system IFG based on the source code of the system directly, it may produce a great number of information flow paths not existing because of the transitivity of the information flow. This paper handles the transitivity of the information flow with the program dependence graph (PDG) before...
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