搜索结果: 1-14 共查到“工学 Variational”相关记录14条 . 查询时间(0.086 秒)
A THREE-DIMENSIONAL AEROSOL VARIATIONAL DATA ASSIMILATION SYSTEM FOR AIRCRAFT AND SURFACE OBSERVATIONS
Data assimilation WRF/Chem Aerosol Aircraft
2018/5/16
A three-dimensional variational data assimilation system is implemented within the Weather Research and Forecasting/Chemistry model, and the control variables consist of eight species of the Model for...
A THTEE-DIMENSIONAL VARIATIONAL ASSIMILATION SCHEME FOR SATELLITE AOD
AOD, Aerosol, Data assimilation, Chemical species, WRF/Chem
2018/5/15
A three-dimensional variational data assimilation scheme is designed for satellite AOD based on the IMPROVE (Interagency Monitoring of Protected Visual Environments) equation. The observation operator...
COLORIZING SENTINEL-1 SAR IMAGES USING A VARIATIONAL AUTOENCODER CONDITIONED ON SENTINEL-2 IMAGERY
Synthetic aperture radar (SAR) optical remote sensing Sentinel-1 Sentinel-2 deep learnig data fusion
2018/6/5
In this paper, we have shown an approach for the automatic colorization of SAR backscatter images, which are usually provided in the form of single-channel gray-scale imagery. Using a deep generative ...
A Variational Eigenvalue Solver on a Photonic Quantum Processor
Variational Eigenvalue Solver Photonic Quantum Processor
2016/1/22
Quantum computers promise to efficiently solve important problems that are intractable on a conventional computer. For quantum systems, where the physical dimension grows expo-nentially, finding the e...
Assimilating Doppler radar radial velocity and reflectivity observations in the weather research and forecasting model by a proper orthogonal-decomposition-based ensemble, three-dimensional variational assimilation method
Assimilating Doppler radar radial velocity and reflectivity observations in the weather research and forecasting model proper orthogonal-decomposition-based ensemble three-dimensional variational assimilation method
2013/9/2
Doppler radar observations with high spatial and temporal resolution can effectively improve the description of small-scale structures in the initial condition and enhance the mesoscale and microscale...
Experimental research on the variational characteristics of vertical stress of soft coal seam in front of mining face
Soft coal seam Mining face Vertical stress distribution Layered characteristics Experimental research
2012/3/28
Permeability of coal seam is extremely sensitive to the in situ stress loaded. The techniques of ‘‘Pressure relief’’ have been proved significantly effective in practice to improve the gas permeabilit...
Coupled method of homotopy perturbation method and variational approach for solution to nonlinear cubic-quintic Duffing oscillator
Nonlinear Oscillators Variational formulation
2010/11/25
This paper presents a new approach for solving approximate analytical higher order solutions for strong nonlinear Duffing oscillators with cubic-quintic nonlinear restoring force. The system is conser...
SOLUTION OF ONE-DIMENSIONAL MOVING BOUNDARY PROBLEM WITH PERIODIC BOUNDARY CONDITIONS BY VARIATIONAL ITERATION METHOD
moving boundary problem variational iteration method temperature distribution
2009/10/14
In this paper, the solutions of the one dimensional moving boundary problem with periodic boundary conditions is obtained with the help of variational iterational method. By using initial and boundary...
Solution of the solidification problem by using the variational iteration method
Solidification process Application of information technology to the foundry industry Stefan problem Moving boundary problem Variational iteration method
2011/4/1
The paper presents the approximated solution of the solidification problem, modelled with the aid of the one-phase Stefan problem with the boundary condition of the second kind, by using the variation...
Variational Principle for Determining the Unknown Wetted Surface of a Planing Ship in Periodic Motion
Plaining Plate Unknown Wetted Length Radiation Problem Adjoint Variational Principle Reverse Flow
2009/5/12
A variational principle is presented to solve the boundary-value problem with the unknown wetted surface of a planing ship in periodic motion. The boundary-value problem is solvable uniquely under the...
Variational Approach to Nonlinear Coupled Oscillators Arising in Sirospun Yarn Spinning
two-strand yarn Sirospun Sirofil dynamical model variational principle
2009/2/13
A description of stable working conditions for spinning two-strand yarn is given. A theoretical model underlying Sirospun yarn spinning is also given. Based on the variational formulation established ...
Application of He's homotopy perturbation and variational iteration methods to solving propagation of thermal stresses equation in an infinite elastic slab
Infinite elastic slab Homotopy perturbation method
2010/9/27
In this Letter, He’s homotopy perturbation method (HPM) and variational iteration method (VIM), are implemented for solving the thermal stresses equation in an infinite elastic slab. Comparison of the...
Can a variational approach describe pulse splitting in a dispersion managed system?
nonlinear optics solitons
2011/5/3
When looking for solitons in nonlinear systems, it is often useful to have a simplifying tool. One such tool is the variational method. On the other hand, in the presence of fast oscillations, the wav...
Variational theory for 2-dimensional free surface flow: Why are G.L. Liu's variational principles incorrect?
variational theory free boundary problem semi-inverse method
2010/3/12
Interests in variational theory of the problem discussed have grown rapidly in recent years, various variational formulae have appeared in literature. But some of the variational principles are wrong....