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The Mesoporous Ge@C sphere has been designed via a modified St”ber method and an in-situ solution deposition. Compared with the pure Ge nanoparticles, the as-synthesized Mesoporous Ge@C sphere nanocomposites show much better cycling stability and rate capability. That as-prepared anode material can maintain...

A method for wind speed retrieval is developed by applying fitting techniques with the ratio of signal to noise. The method is applied to the wind speed retrieval from the nautical radar images. And we get a correlation coefficient of 0.88 and RMS error of 1.34m/s by comparing the data from the radar...

Online learning is a learning way to use online education platform for learners. It could let the learners start learning at anytime from anywhere by removing the traditional education's time and space limit. As the online learning style becomes more and more popular, its main base environment has gradually...

The wind tunnel test control is the key to the wind tunnel tests. This article Studied 0.75m × 0.75m With backflow wind tunnel measurement and control technology, through the transformation of the wind tunnel motor to improve the stability and uniformity of the airflow and reduce turbulence degree; through...

Rarefied gas effects have to be considered when doing the research and design of hypersonic flight vehicle in near space, in which accurate prediction of flow field and surface properties such as pressure, shear stress and heat flux are needed. Research on the mechanism of hypersonic slip flow must consist...

In this paper we analysis aircraft dynamic characteristic on relaxed static stabillity control from the concept of active control technology point of view, and calculate the dynamic characteristic of longitudinal. Through calculation, further reseaerch on the influencing of relaxed static stability on...

Key problems in view of the urgent long-endurance uav, the research of the application of bionics to no one wing design. With the wings of a certain unmanned aerial vehicle as the research object, is good at gliding gull for bionic prototype. Design imitation airfoil seagull flat wings and wing tip winglet...

Call center is one of the most important means for telecom operators to provide after-sales service for customers. Every day, call center can produce a large number of voice data. But these data do not bring significant value to the enterprise. Recent years, the development of intelligent voice technology...

In this work, alloy coatings with different Al and Mg content have been prepared on overhead ground wires for Zn-Al-Mg series hot-dip coatings providing good protection on mild steel surface against corrosion. A reinforced thermal stability is confirmed by DSC thermodynamic curves. Furthermore, the enhanced...

Aerial aluminum conductor (ACSR) as the primary overhead lines products, has been running in the field for a long time. The inevitable corrosion will be affected by heavy pollution environment. Salt spray is acknowledged as the natural environment in most demanding of corrosion, which can make the wire...

This article analyzes the different type of large synchronous generator excitation system and discussed the adaptability of the excitation system model of PSASP. A self-excitation model and a three machine excitation model is modeled and simulated, which proves the accuracy of PSASP model.

The fetal heart rate (FHR) is a significant indicator of whether the fetus in the mother's womb is healthy. Ultrasonic Doppler detection is extensively used in the detection of FHR due to its high sensitivity, good directivity, and non-invasiveness. However, analog multiplier demodulation is usually...

We proposed a method to resolve the problem of optical system defocus phenomenon by using the chromatic aberration of the single lens optical imaging system through reverse thinking. Furthermore, we designed and built the production which use SDRAM to collect data for CMOS image information literacy...

With reverse thinking, based on the phenomenon of chromatic dispersion, double monochromatic light sources scheme was used to solve the phenomenon of defocus in large-depth-field single lens digital imaging system. Two specific narrow bandpass filter was employed to filter the LEDs into two monochromatic...

We designed a multi-software-hybrid-programming digital image processing software for high definition single lens digital imaging system. In this digital image processing software system, LabVIEW ,MATLAB,Quartus ii and C++ are all employed to call DLL library to invoke the CMOS, read data, process image...

Photography is becoming more and more common in civil and military, and it also occupies an important position. Macro photography due to the shallow depth of field (a clear picture of small range).

Based on OpenGL and Google library we established the target model library and the canny operator is used for edge detection. Combined with D-S evidence theory and Pseudo-Zernike moments, the air target recognition algorithm based on information fusion is proposed. Pseudo-Zernike moments are invariant...

General education is an important part of higher education in China. General education affects the free comprehensive development of college students. This paper expounds the necessity of the purpose of general education and its implementation. This paper puts forward a teaching method based on the lecture...

Flight or maneuvering at high angle of attack is one of the most important parts for the modern fighters. When the angle of attack is within the usual range, the aerodynamic characteristics have a linear relationship with the dynamic of aircraft. With the increase of angle of attack, the airflow separation...

Basing on scene analysis and VaR calculation, this paper discussed system architecture of scenario calculation and accurate data's importance of system model from the view of system theory. We also discussed several kinds of data errors and their processing methods to avoid the error of data. Then we...