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A 2.5D multifrequency large signal beam-wave reaction code of TWT based on the field theory is developed for crossmodulation and intermodulation products, in which space charge fields are obtained through solving discrete Helmholtz equations with the help of Particle-in-cell method. Two-tone experiment and simulation of L band space helix-TWT shown that a good agreement in CM and IM products.
A large body of work has been devoted to address corporate-scale privacy concerns related to social networks. The main focus was on how to share social networks owned by organizations without revealing the identities or sensitive relationships of the users involved. Not much attention has been given to the privacy risk of users posed by their information sharing activities. In this paper, we approach...
The paper provides an empirical study to reflect the interaction between disclosure quality of accounting information and corporate governance efficiency. The paper establishes an evaluation model to evaluate disclosure quality of accounting information, and finds that disclosure quality of accounting information has positive correlation with corporate governance efficiency which is ROE, ROA, EPS...
In the actual operating work of the concrete pump truck, there are many ill factors impact on the control quality that are environment interference, drive saturation, measurement error, rounding error and sampling delay. To overcome disadvantage, prove mathematical model accurate and identify parameters full, the group control was used; PSO algorithm was used to calculate the final value of every...
The thermal interface resistivity (TIR) of the helix slow-wave structure (SWS) is studied theoretically and experimentally. The effects of the TIRs at different interfaces on heat dissipation capability of the SWS have been analyzed and compared using ANSYS. The TIRs at the helix-rod interface and the rod-barrel interface have been calculated respectively with the developed equations and the measured...
In this paper a control approach is presented for flight control system of a rigid body missile using both state dependent Riccati equation (SDRE) method and fast output sampling (FOS) technique. The dynamics and kinematics for missile attitude stable problem are of typical nonlinear character. SDRE technique has been well applied to this kind of highly nonlinear control problems. But in practice...
In the actual operating work of the concrete pump truck, there are many ill factors impact on the control quality that are environment interference, drive saturation, measurement error, rounding error and sampling delay. To overcome disadvantage, prove mathematical model accurate and identify parameters full, the group control was used; PSO algorithm was used to calculate the final value of every...
This paper presents a novel approach only based on triaxial accelerometers for three-dimensional (3D) orientation of lower limb segment during real-time motion. With two coaxially placed triaxial accelerometers, the actual resultant acceleration signals containing the acceleration of gravity and lineal movement along each axis were obtained. The angle displacements for orientation of each segment...
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