In this paper, the principle and methods of system engineering are applied to studying the problem of educational long-term development planning. a complete mathematical-simulated model setup is adopted to describe th...In this paper, the principle and methods of system engineering are applied to studying the problem of educational long-term development planning. a complete mathematical-simulated model setup is adopted to describe the internal regularity between educational system and social economic macrosystem. and then. a set of effective methods are put forward to carry out educational planning. This model has been actually appliedcation in the project of educational planning research in Chongqing region,展开更多
To better understand the complex process of wave transformation and associated hydrodynamics over various fringing reef profiles, numerical experiments were conducted with a one-dimensional （1D） Boussinesq wave mode...To better understand the complex process of wave transformation and associated hydrodynamics over various fringing reef profiles, numerical experiments were conducted with a one-dimensional （1D） Boussinesq wave model. The model is based on higher-order Boussinesq equations and a higher-accuracy finite difference method. The dominant energy dissipation in the surf zone, wave breaking, and bottom friction were considered by use of the eddy viscosity concept and quadratic bottom friction law, respectively. Numerical simulation was conducted for a wide range of wave conditions and reef profiles. Good overall agreement between the computed results and the measurements shows that this model is capable of describing wave processes in the fringing reef environment. Numerical experiments were also conducted to track the source of underestimation of setup for highly nonlinear waves. Linear properties （including dispersion and shoaling） are found to contribute little to the underestimation; the low accuracy in nonlinearity and the ad hoc method for treating wave breaking may be the reason for the problem.展开更多
文摘In this paper, the principle and methods of system engineering are applied to studying the problem of educational long-term development planning. a complete mathematical-simulated model setup is adopted to describe the internal regularity between educational system and social economic macrosystem. and then. a set of effective methods are put forward to carry out educational planning. This model has been actually appliedcation in the project of educational planning research in Chongqing region,
基金supported by the National Natural Science Foundation of China(Grants No.51009018 and 51079024)the National Marine Environment Monitoring Center,State Oceanic Administration,P.R.China(Grant No.210206)
文摘To better understand the complex process of wave transformation and associated hydrodynamics over various fringing reef profiles, numerical experiments were conducted with a one-dimensional （1D） Boussinesq wave model. The model is based on higher-order Boussinesq equations and a higher-accuracy finite difference method. The dominant energy dissipation in the surf zone, wave breaking, and bottom friction were considered by use of the eddy viscosity concept and quadratic bottom friction law, respectively. Numerical simulation was conducted for a wide range of wave conditions and reef profiles. Good overall agreement between the computed results and the measurements shows that this model is capable of describing wave processes in the fringing reef environment. Numerical experiments were also conducted to track the source of underestimation of setup for highly nonlinear waves. Linear properties （including dispersion and shoaling） are found to contribute little to the underestimation; the low accuracy in nonlinearity and the ad hoc method for treating wave breaking may be the reason for the problem.
