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Search Results: 1 - 10 of 23805 matches for " Guoqing Shi "
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A Way to Improve Knowledge Sharing: from the Perspective of Knowledge Potential  [PDF]
Lingling Zhang, Xiuyu Zheng, Jun Li, Guangli Nie, Guoqing Huo, Yong Shi
Journal of Service Science and Management (JSSM) , 2008, DOI: 10.4236/jssm.2008.13024
Abstract: Knowledge is the most important resource in an organization, and the knowledge transfer and sharing between employees is of vital importance for organizations. “Prisoner’s dilemma” exists in the process of the organizational knowledge transfer and sharing when the employees transfer their knowledge to the organization and share their knowledge with other employees. This paper analyzes the process and obstacle of the knowledge transfer and sharing in the organization and studies the game model of the knowledge transfer and sharing, and put forward the conclusion that different knowledge potential employees should be stimulated by different measures. Through analyzing principle-agent in the incentive mechanism, introducing the equity incentive method will have infinitely repeated games to the knowledge high-potential employees who are the key sources of the knowledge transfer and sharing in the incentive mechanism design. This makes it possible to break the prisoner's dilemma of the knowledge transfer and sharing.
INFLUENCE OF CARBONATION ON THE CORROSION PERFORMANCE OF STEEL HRB335 IN SIMULATED CONCRETE PORE SOLUTION

SHI Jinjie,SUN Wei,GENG Guoqing,

金属学报 , 2011,
Abstract: Electrochemical impedance spectroscopy, cyclic voltammetry and potentiodynamic polarization were used to investigate the effect of the decrease in pH values of simulated concrete pore (SCP) solutions due to carbonation on the corrosion of steel HRB335. The results indicated that the stability and corrosion inhibition of passive film on the steel surface decrease with decreasing pH value of SCP solutions. In SCP solutions with pH values of 12.5 and 11.5, the stability of passive film is in a competitive balance, the competition results from the dissolution of passive film due to the decreasing pH and the protective effect of calcium-iron containing protective layer CaFe2O4 or deposit CaCO3 formed on the steel surface. When the pH value decreased unceasingly (pH=10.5, 10.0), the stability of passive film decreased gradually, and the active uniform corrosion occurred on the steel surface.
Two-Dimensional Van der Waals Epitaxy Kinetics in a Three-Dimensional Perovskite Halide
Yiping Wang,Yunfeng Shi,Guoqing Xin,Jie Lian,Jian Shi
Physics , 2015, DOI: 10.1021/acs.cgd.5b00949
Abstract: The exploration of emerging materials physics and prospective applications of two-dimensional materials greatly relies on the growth control of their thickness, phases, morphologies and film-substrate interactions. Though substantial progresses have been made for the development of two-dimensional films from conventional layered bulky materials, particular challenges remain on obtaining ultrathin, single crystalline, dislocation-free films from intrinsically non-Van der Waals-type three-dimensional materials. In this report, with the successful demonstration of single crystalline ultrathin large scale perovskite halide material, we reveal and identify the favorable role of weak Van der Waals film-substrate interaction on the nucleation and growth of the two-dimensional morphology out of non-layered materials compared to conventional epitaxy. We also show how the bonding nature of the three-dimensional material itself affects the kinetic energy landscape of ultrathin films growth. By studying the formation of fractal perovskites assisted with Monte Carlo simulations, we demonstrate that the competition between the Van der Waals diffusion and surface free energy of the perovskite leads to film thickening, suggesting extra strategies such as surface passivation may be needed for the growth of monolayer and a few layers films.
The Effects of Controlled Release Fertilizer and Conventional Complex Fertilizer on the Dry Matter Accumulation and the Yield in Winter Wheat
Guoqing Li,Jingtian Yang,Liyuan Yan,Yan Shi
Research Journal of Applied Sciences, Engineering and Technology , 2013,
Abstract: In order to research the use ratio of controlled release fertilizer in winter wheat. So, the experiment about the effects of Controlled Release Fertilizer (CRF) and Conventional Complex Fertilizer (CCF) on the dry matter accumulation and the grain yield in winter wheat has studied with pots in the open field. The results indicated that the CRF improved the proportion of the number of effective tillers to the total number of tillers. And the mixture of the CRF and equivalent CCF have more improved the proportion of the dry root weight to the total dry matters of the after of wheat flowering stage than that of the CRF used alone (T1, T2, T3). The treatment T6 was more improved the accumulation of the dry matters of aerial part than others. And the weight gain of T6 after a thesis was higher than other treatments and the control treatment (CK). In the facts of grain number per spike, thousand grain weight and yield, the treatments of the mixture of the CRF and equivalent CCF (T4,T5,T6) were higher than that of the treatments of CRF used only (T1,T2,T3) and CK, in which the T6 was highest. So, we think that this treatment namely T6 was used fertilizers least and gained the highest yield of grain.
Enhancing network transmission capacity by efficiently allocating node capability
Guoqing Zhang,Shi Zhou,Di Wang,Gang Yan,Guoqiang Zhang
Computer Science , 2009,
Abstract: A network's transmission capacity is the maximal rate of traffic inflow that the network can handle without causing congestion. Here we study how to enhance this quantity by redistributing the capability of individual nodes while preserving the total sum of node capability. We propose a practical and effective node-capability allocation scheme which allocates a node's capability based on the local knowledge of the node's connectivity. We show the scheme enhances the transmission capacity by two orders of magnitude for networks with heterogenous structures.
Automated Analysis of the SCR-Style Requirements Specifications
Automated Analysis of the SCR-StyleRequirements Specifications

WU Guoqing,LIU Xiang,YING Shi,Tetsuo Tamai,
WU Guoqing
,LIU Xiang,YING Shi,Tetsuo Tamai

计算机科学技术学报 , 1999,
Abstract: The SCR (Software Cost Reduction) requirements method is aneffective method for specifying software system requirements. This paper presents aformal model analyzing SCR-style requirements. The analysis model mainly appliesstate translation rules, semantic computing rules and attributes to define formal se-mantics of a tabular notation in the SCR requirements method, and may be used toanalyze requirements specifications to be specified by the SCR requirements method.Using a simple example, this paper introduces how to analyze consistency and com-pleteness of requirements specifications.
Preliminary survey of estrogenic activity in part of waters in Haihe River, Tianjin
Jing Shao,Guoqing Shi,Xinglong Jin,Maoyong Song,Jianbo Shi,Guibin Jiang
Chinese Science Bulletin , 2005, DOI: 10.1007/BF03183651
Abstract: A preliminary survey of estrogenic activity of the contaminant in part of waters (Ziya River and the estuary of Haihe River) in Haihe River, Tianjin has been performed with the plasma vitellogenin (Vtg) in feral fish as a biomarker for estrogenic activity. The concentrations of bisphenol A (BPA), 4-tert-octylphenol (OP) and 4-nonylphenol (NP) in surface water were also determined. The presence of Vtg in male fish plasma as well as that in female can be detected at different sites and different seasons. The results indicate that the water in the sampling sites was contaminated by some estrogenic compounds. Although BPA, OP and NP can be detected in all of the water samples, their concentrations were much lower than the effective concentrations for those chemicals to induce Vtg production in male fish.
Discussion of Direct Numerical Simulation Method for Supercritical Carbon Dioxide Jet Flow  [PDF]
Hui Gao, Guoqing Hu
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.410171
Abstract:

A kind of direct numerical simulation method suitable for supercritical carbon dioxide jet flow has been discussed in this paper. The form of dimensionless nonconservative compressible Navier-Stokes equations in a two-dimensional cartesian coordinate system is derived in detail. High accurate finite difference compact schemes based on non-uniform grid system are introduced to solve the equations. The simulation results of the three vortex pairing phenomenon of plane mixing layer and a compressible axisymmetric jet flow field show that the discussed numerical simulation method is feasible to calculate the supercritical carbon dioxide jet fluid. And it is found that the difficulties of splitting the convective terms in conservation Navier-Stokes equations, which are brought by the supercritical carbon dioxide fluid pressure state equation, can be avoided by solving the nonconservative compressible Navier-Stokes equations.

Ground States for a Class of Nonlinear Schrodinger-Poisson Systems with Positive Potential  [PDF]
Guoqing Zhang, Xue Chen
Applied Mathematics (AM) , 2015, DOI: 10.4236/am.2015.61004
Abstract: Based on Nehari manifold, Schwarz symmetric methods and critical point theory, we prove the existence of positive radial ground states for a class of Schrodinger-Poisson systems in \"\" , which doesn’t require any symmetry assumptions on all potentials. In particular, the positive potential is interesting in physical applications.
Gauss-Legendre Iterative Methods and Their Applications on Nonlinear Systems and BVP-ODEs  [PDF]
Zhongli Liu, Guoqing Sun
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.411203
Abstract: In this paper, a group of Gauss-Legendre iterative methods with cubic convergence for solving nonlinear systems are proposed. We construct the iterative schemes based on Gauss-Legendre quadrature formula. The cubic convergence and error equation are proved theoretically, and demonstrated numerically. Several numerical examples for solving the system of nonlinear equations and boundary-value problems of nonlinear ordinary differential equations (ODEs) are provided to illustrate the efficiency and performance of the suggested iterative methods.
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