在传播中

Based on wave propagation feature, this paper analyses 3D seismic migration algorithms such as alternating direction implicit method, LU decomposition method, and inverse operator approach method. The result shows that the alternating direction implicit method is fast but causes distortion in wave field extrapolation and affects image accuracy; however LU decomposition and inverse operator approach methods are fast while holding circular symmetry of wave field, and are promising in oilfield exploration and development.

在波的传播特征分析基础上，对交替方向隐式法、LU分解法、逆算子逼近法等三维地震偏移算法进行了分析研究，结果表明，交替方向隐式法虽然快捷但是在波场外推中明显产生畸变并影响成像的准确性，而LU分解和逆算子逼近法是保持波场圆对称特征前提下的快速算法，在油田勘探开发中具有较好的应用前景。

Further, we investigated the possible impact of SDP on ENSO event in interannual scale by researching the anomalous characteristics of sea temperature, wind, convergence and divergence, total cloud amount, radiation and so on. The results showed that the influence of SDP on ENSO involve not only the process of positive and negative air-sea feedback, but also the interaction between atmospheric circulation over tropical and subtropical, specially the eastward propagation of anomalous zonal wind from the equatorial Indian Ocean to the Pacific Ocean. Otherwise, it also relates, to some extent, to the transition of large-scale climatic mean flow over the Indian Ocean and Pacific Ocean.

进一步，本文通过分析SDP事件前后期海温、高低层风、低层辐合辐散、高空云量和辐射等的变化特征研究了南印度洋偶极型海温异常在ENSO事件中的作用，结果表明：SDP在ENSO事件中的作用不仅涉及海气相互作用的正负反馈过程，还与热带和副热带大气环流之间的相互作用有关，特别是与东南印度洋海温变化所引起的异常纬向风由赤道印度洋向赤道太平洋传播的过程等有十分直接的关系；同时，SDP对ENSO事件的影响在很大程度上还依赖于大尺度平均气流随季节的变换。

It is shown that the structure-induced Fano resonance and SOC-induced Fano resonance exist in the charge conductance in con- sequence of the bound states interference with the conductance ones. At the same time, the Fano resonance and antiresonance structures are also found in the spin polarization.

利用晶格格林函数方法，发现由于stubs和SOC产生的势阱使系统中出现束缚态，这些束缚态与传播态之间相互干涉导致电导中出现Fano共振结构，同时在对应的自旋极化率中也出现Fano共振或反共振结构。

Using the calculation formula of reflection ecergy, transmissin energy and incidence energy and equivalent principle of electric signal received by detector and seismic wave energy reflected by underground lithologic boundary, the formula of interval velocity and strata density are derived.

根据运动学中的动量守恒定律、分析地震勘探过程中地震波在地下介质中的传播过程，利用反射能量、透射能量与入射能量的计算公式和检波器转化的电信号与地下密度界面反射地震波波动能量的效原理，推导出直接求层速度和层密度公式。

There are fourteen chapters, including introduction, plane stress and plane strain, two-dimensional problems in rectangular coordinates, two-dimensional problems in polar coordinates, photoelastic and moire experimental methods, two-dimensional problems in curvilinear coordinates, analysis of stress and strain in three dimensions, general theorems, torsion, bending of bars, axisymmetric stress and deformation in a solid of revolution, thermal stress, the propagation of waves in elastic solid media, at last there is an appendix on the application of finite-difference equations in elasticity.

全书共十四章，包括绪论、平面应力和平面应变、直角坐标中的二维问题、极坐标中的二维问题、光弹性与云纹实验方法、曲线坐标中的二维问题、三维应力和应变问题、一般定理、简单的三维弹性问题、扭转、杆的弯曲、回转体中的轴对称应力和变形、热应力、弹性固体介质中波的传播，最后有一附录，讲述差分方程在弹性理论中的应用。

In this thesis, several problems of time-dependent systems in various branches of physics are investigated by making use of the generalized invariant theory and the invariant-related unitary transformation formulation. The problems are given as follows:(1) Spin model and geometric phase factor in the fiber We investigate the fiber experiment performed by Chiao-Tomita and the Chiao-Wu theory concerning the geometric phase factor in the optical fiber, and then show that the investigation of the propagation of photons inside the noncoplanar optical fiber can be regarded as that of a second-quantization spin model.

本论文用推广的不变量理论和与不变量有关的幺正变换方法研究了一些物理分支中的几个含时系统问题：(1)自旋模型与光纤中光子几何相因子问题重新考察了Chiao-Tomita光纤实验和Chiao-Wu关于光纤中光子几何相因子的理论，证明了在非共面弯曲光纤中传播的光子运动问题实际上可以化为二次量子化含时自旋模型研究。

Based on the fact that the different modes of Rayleigh wave have different propagation velocities, the signals of Rayleigh wave which superposes in time domain can be separated in frequency-wave-number domain, different modes of Rayleigh wave are separated and extracted by Fourier transform.

摘 要：应用Fourier变换法分离提取地震记录中不同模态的瑞雷面波，其原理是：利用瑞雷面波各模式传播速度的差异，将时间域中叠加在一起的瑞雷面波信号在频率波数域中分开，以此实现分离提取各阶模态瑞雷面波。

Based on international relations and domestic developments, the author discussed the effects of Beijing Olympic Games on the integration and mobilization of various aspects in China, the capacity of the will and power of various groups, as well as the promotion of national spirit: 1 in such 3 ways as communication media, true ex-perience of officers and athletes, and experience of volunteers and audience, Beijing Olympic Games let the world know more about China; 2 the birth of Beijing Olympic spirit given by Beijing Olympic Games in the process of preparation and the implementation of peaceful Olympic Games have forged the cohesive force of the Chinese na-tion; 3 the cultural education chain made by Beijing Olympic Games in the process of preparation has vitalized the charm and value of Chinese elements; 4 the implementation of humanistic Olympics, scientific Olympics and green Olympics in Beijing Olympic Games have boosted the active development of hard strengths; 5 the successful holding of Beijing Olympic Games plays a significant role in the construction of a harmonious society.

摘 要：基于国际关系与国内发展，讨论了北京奥运会对整合、动员国内各层面、各集团意志和力量的能力以及对民族精神提升的影响：(1)北京奥运会通过传播媒介、官员与运动员的真实体验以及志愿者与观众的经历等3个途径，让世界更加了解了中国；(2)北京奥运会在筹办过程中孕育的北京奥运精神和平安奥运的落实，铸就了中华民族的凝聚力；(3)北京奥运会在筹办过程中的文化教育链条，激发了中国元素的魅力与价值；(4)北京奥运会中的人文奥运、科技奥运和绿色奥运理念的落实，提升了硬实力的发展；(5)北京奥运会的成功举办，对和谐社会的建设发挥了显著作用。

It touches on the ecological ethics implied in the activities such as nature worship, animal and plant worship and totem worship in primitive religions, which conveys a group consciousness of obedience to the nature and the harmonious coexistence between man and nature.

探讨了原始宗教中的自然崇拜、动植物崇拜、图腾崇拜中的生态伦理思想，即顺从自然、与自然和谐相处的群体伦理意识；人为宗教中的道教、佛教和伊斯兰教在民族地区传播及其所包含的生态伦理意识；节日文化中的宗教节日、农事节日所包含的生态伦理思想。

The emotional relationship with Mao envisioned in Yin Zhaoyang's painting reflects the ideological influence of his portrait during the childhoods of the post-revolutionary generation. This influence was strongest in visual impact after 1949 when Mao's portrait saturated the media and was seen everywhere.. The portrait visually invaded the self image of a generation and formed an emotional aesthetics that is also one of the roots of modern youth.

在尹朝阳的绘画中，和毛的想象性的情感关系，体现为肖像在后革命一代成长初期的一种意识形态影响，在这种影响中，肖像的视觉影响即毛在1949年之后大量肖像的扩散所产生的形象无处不在的大众传播，一种肖像对于一代人自我想象的视觉侵入所产生的情感美学，实际上构成了一种青春的现代性根源。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。