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This paper investigates the design of interference alignment (IA) for a three-cell constant cellular interfering network, where three base stations in the cellular network simultaneously transmit signals to a group of users in their own cells while causing interference to each other. While determining the existence of IA with reaching the degrees of freedom (DoF) outer bound is still a very challenging...
Reasonable pace of credit, not only can enhance the balanced growth and sustainability of the credit, but also promote economy develop sustained and steadily. In this paper, the ARCH model is applied to analyze the credit volatility in China market, and three ARCH model (GARCH, TGARCH, EGARCH) are estimated. The empirical results show that, China's credit fluctuations exhibits significant ARCH effects,...
Soil salinization is one of the most prominent ecological problems of coastal plain in Northern China, which has degraded the ecosystem services of the region. This study, taking Huanghua County of Hebei Province in Northern China as a case study area, introduced the technology system and related technologies for subsurface drainage systems with an aim to optimize the ecosystem services of coastal...
By extended mapping method and Hermite transformation, we study the generalized stochastic KdV equation, and obtain some families of stochastic exact solutions, which include Jacobi elliptic function-like, combined Jacobi elliptic function-like, soliton-like, kink-bell soliton-like and triangular function-like solutions.
The respiration and excretion rates of Meretrix meretrix at different salinities were studied at 20°C in laboratory in December 2008. 1) It was shown that the effects of salinity on oxygen consumption rate(OR) and ammonia excretion rate(NR) in Meretrix meretrix are extremely significant(pÃ0.05), when salinity changes from 8.2 to 28.1. 2) At the same time, the trend of ratio of O/N shows first increased...
Learning an appropriate dictionary is a critical issue for sparse representation based super-resolution algorithms. A good dictionary can well represent an underlying image. In super-resolution algorithms, classical dictionary learning doesn't consider the information of test image which contains the information of the reconstructed image. In this paper, the new dictionary is design for image super-resolution,...
This paper studies incomplete data problems of circular cone-beam computed tomography, which occur frequently in medical imaging and industrial imaging. The incomplete data problems in which projection data are only available in an angular range can be attributed to the limited angle tomography. Limited angle tomography is a severely ill-posed inverse problem. In recent years, image reconstruction...
In this paper, based on assumption that the loads acting on a beam-column structure are conservation, the Hamilton variational principle is extended to a nonlinear elastic Timoshenko-type beam-column structure located on a nonlinear elastic foundation, and the corresponding 3-dimension mathematical model for analyzing the non-linear mechanical behaviors of structure is established. As application,...
According to the composition of Hydraulic AGC system of mill and the research of rolling force, its simulation model was founded based on the DOS environment with C programming language. The simulation shows that the model is beneficial to analyzing the influences of the processing factors on the thickness accuracy. It is significant for designing the controller reasonably and studying on the response...
Present a method for computing the embedded depth in rock of the laterally loaded rock-socketed piles. The method, based on the Hoek-Brown failure criterion, takes into account the mobilized lateral shear resistance along the bond of perimeter of the pile in rock. The proposed method is verified to be more reasonable by comparing its result with that of other existing methods.
In this paper, three temperature degrees are divided in boiler according to the character of transfer and combustion in the boiler. At the same time, three units are divided on the basis of temperature gradient. The energy and exergy analysis are on these basis. Energy and exergy efficiency are deduced according to the energy and exergy equations of three units as shown in fig.1. In this study, we...
The shader in the GPU increases flexibility and enables customizations of vertex and fragment processing, and it also provides the programmer with various special effects essential in development of realistic 3D virtual scene. Compared to a CPU based simulation of the ocean water, the shader-based simulation in this paper reduces the complexity of the model by eliminating most fixed function parameters...
Combined the prosodic features of Chinese speech, pitch is extracted accurately with autocorrelation function and three-level clipping technique based on PSOLA algorithm. The complexity of the algorithm is effectively reduced. Using the advantages of TD-PSOLA algorithm, the scale factors of pitch periods are analyzed and adjusted, after modifying the time length and fundamental frequency. Finally...
Particle Swarm Optimizer (PSO) suffers a problem which gets used to trap into a sub-optimal solution, especially in Constrained Optimization (CO). On the other hand, it's difficult to converge to a feasible domain for some constrained optimization problems. The paper proposes a two-stage probing method to improve PSO method. The first stage guarantees the particle to get away from feasible region...
IT outsourcing of enterprise has been developing fast during last decade with great risk. It inherits essential risks of IT and possesses unique risks, on which attracts many research interests and achievements. This paper, after reviewing on the research development on IT outsourcing risk of enterprise, fist using theory and the method of rough set (RS) constructs the knowledge decision table of...
Smooth Particle Hydrodynamics (SPH) is an accurate method in fluid numerical simulation. In this paper we introduce a calculating algorithm based on the SPH, and propose an interactive method to simulate fluids with free surfaces. This method is completely consistent with the dynamic behavior of a viscous fluid, namely described by Navier-Stokes equations. In addition, for online simulation, we adopt...
A low-power MOSFET-only voltage reference circuit is proposed which compensates for the temperature dependence of a proportional-to-absolute-temperature (PTAT) voltage generated by a pair of MOS devices working in the subthreshold region with a gate-to-source voltage of an MOS transistor operating in the same region. The voltage reference circuit, designed for a standard 0.6 mum CMOS process, has...
Nonlinear matrix equation widely used in the control theory.When restricted to integer rings ,the integer matrix and the finite directed graph is corresponding.This paper made the integer root of matrix equation applied to the graph theory, and get several propositions about existence of the underlying graph(root graph) of special graphs. And we obtained the algebraic approach on how to find the adjacency...
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