| 1. | Computation of magnetotelluric response in the 2 - d inhomogeneous media
二维非均匀介质中大地电磁响应的计算 |
| 2. | The finite element method suits specially in the solution of complex geometry structure and the inhomogeneous medium electromagnetic problem
有限元法特别适合于解决复杂几何结构和非均匀媒质的电磁问题。 |
| 3. | The modeling and interpretation of receiver function for lateral inhomogeneous media is a potential study field for the physics of the earth interior
用横向非均匀介质模拟并解释接收函数，是地球内部结构研究的一个潜在的发展方向。 |
| 4. | Since there are less test - experience on the bearing capacity of footings on inhomogeneous medium in home or abroad , model test were designed and performed to determine the bearing capacity and the mechanism with vertical and inclined loads ; 3
3 、在迈耶霍夫和汉纳的理论基础上，将其双层土地基极限承载力计算公式进行推广改进，得到了多层土地基极限承载力的计算公式。 |
| 5. | Receiver function is simulated for inhomogeneous media , as a special case for elastic wave modeling with nearly vertical incidence plane p wave as initial condition , and provide the base for inversion and migration of receiver function in inhomogeneous media
以下覆半无限空间近垂直入射平面p波，作为弹性波数值模拟的特例，来模拟接收函数，从而为横向非均匀介质中接收函数的反演和偏移成像问题奠定了研究基础。 |
| 6. | With these three calculated parameters , the attenuation factor value of the radio wave propagation in the earth ' s crust is calculated by the ways of plane wave method and communication formula method , and the value of the leakage on the ground is also calculated by the inhomogeneous medium ' s field analysis method
据此三种参数，利用平面波法和通信公式法计算出电波在地壳中传播的衰减因子值，以及利用非均匀介质的场分析法计算出地面场强泄露衰减因子值。 |
| 7. | Abstract : in the field of optical wireless links , concentrators that are designed by the tools of nonimaging optics can be used to collect the light radiation and are more compact and have higher collection efficiencies than imaging concentrators . hemispherical concentrators are studied by ray tracing , then for several normal nonimaging concentrators : hemispherical concentrators , compound parabolic concentrators ( cpc ) , dielectric totally internally reflecting concentrators ( dtirc ) , simultaneous multiple surfaces concentrators ( sms ) and inhomogeneous media concentrators ( poisson bracket ) , the design methods and the performances e . g . the gain and the field of view ( fov ) are compared as well as the application suggestion
文摘:在无线光通信领域,利用非成像光学设计的集中器能够聚集光辐射能量,而且相对于成像性集中器具有更紧凑的结构和更高的增益.利用光线追迹法对半球形集中器的性质进行了分析与研究.对好几种非成像集中器:半球形集中器,复合抛物线形集中器,介质内部全反射集中器,多表面集中器,多相介质集中器,从设计原理、增益和视场进行比较,并分析其应用场合 |
| 8. | Numerical migration for typical models show that , in contrast to ray method , prestack wave motion migration can correctly image inhomogeneous media , and suppress multiple reflection wave effectively . prestack migration method presented in this paper should be developed to apply in observational teleseismic p waveform data , to study the inhomogeneity of crust and upper mantle
典型的介质模型数值分析表明，与射线方法相比，接收函数的波动方程叠前偏移能对横向非均匀介质准确成像，不仅有较高的分辨率，而且对多次波有较明显的压制作用。 |
| 9. | Measured results from in - site loading tests in tannin harbor and from in - door model tests were compared with predictions from the limit equilibrium methods . a method of estimating the bearing capacity for inhomogeneous medium was suggested to meet every case ; 4 . according to the results from model tests , the elastoplastic fem were performed to study the procession of the change of the stress and strain in inhomogeneous medium and to simulate the procession of the forming of the failure surface during loading , and the failure mechanism was studied ; 5
4 、结合模型试验结果，确定出了符合非均质介质规律的弹塑性模式，在此基础上分别运用二维、三维弹塑性有限元程序，模拟出了外荷载作用过程中非均质介质内部应力、变形以及破坏面的发展过程，分析得出了非均质介质地基的破坏机理； 5 、在港口工程地基设计当中，已经引入了可靠度理论计算分析基础稳定性。 |
| 10. | But the methods can only treat some simple cases , can not deal with muti - layered subsoils . therefore the mechanism of failure and the methods of estimating the ultimate bearing capacity should be further studied for inhomogeneous medium . in this paper , in - site test , model test with different scales and elastoplastic fem was performed to study the problem
这两种方法只能解决简单非均质介质基础的承载力问题；对于基础介质构成较复杂的情况，计算结果往往和实际值有很大的误差，因此对于非均质介质基础的破坏模式及极限承载力的计算需要更深入的研究。 |
