一种获得共轭分子简并能级波函数的方法

通过实例介绍了运用HMO理论根据分子对称性获得共轭分子简并能级波函数的一种方法.     

具有非线性阻尼及源项的波动方程解的存在性与爆破

应用Faedo-Galerkin方法,证明了一类具有非线性阻尼及源项的波动方程非线性Neumann边界条件初边值问题弱解的存在性,并给出了此问题解的爆破条件.     

“韩流”现象的跨文化解读

文章以跨文化交际理论为基础,从交际主体对自身文化身份的焦虑,对文化同源异质性的认同,文化交际方式的选择以及文化移情作用的产生等方面,深入解读了“韩流”现象在我国形成和发展的原因。     

Background current affects the internal wave structure of the northern South China Sea

The internal wave modal equations are solved with the consideration of background currents. Analytical and numerical solutions of some specific examples, including observations in the northern South China Sea （SCS）, are obtained to investigate the effect of back- ground current on internal wave vertical structure. The effects of current shear and curvature on internal wave vertical structure are eval- uated separately. It is found that the phase speed and wave structure are modified by background currents, the current shear has little effect on wave structure, whilst the current curvature could have a strong impact on the wave structure. The extent of the effect by the current curvature on the wave structure depends on the magnitudes of current curvature, relative wave speed, and buoyancy frequency, sometimes the effect by the current curvature may even cause the wave to attenuate severely with depth. A new method to obtain the real eigenfunction with depth in the case that the waves become evanescent is also put forward. It is shown that the residual tidal current in the northern SCS is strong enough to cause the wave to attenuate severely at the uooer laver.     

Effect of surface waves on air-sea momentum flux in high wind conditions for typhoons in the South China Sea

The WAVEWATCH-III wave model is implemented in the South China Sea to investigate the air-sea momentum flux in high wind conditions during 23 passages of typhoon occurred in 2005. The wave model is driven by the reanalyzed surface winds assimilated by several meteorologic data sources. The friction velocity was calculated and the relationships between different air-sea momentum param- eters were studied. The results show that the drag coefficient decreases with the wave age generally and levels off for wind speeds higher than 35 m/s under typhoon wind forcing. The spatial variations of air-sea momentum flux parameters in high wind conditions forced by typhoons are completely different from those at weak wind speeds and significantly depend on the relative position from the typhoon center.     

物探测井技术在南宁地铁勘察中的应用分析

物探测井技术属于原位测试方法的一种,通过将探头放入已成钻孔,利用地球物理方法测得地下岩层的物性参数,进而对设计、施工进行指导。通过南宁地铁勘察实例,介绍了物探测井技术在地铁勘察项目中的工作方法,提供了几种物性参数的理论及工程意义,并分析测井工作中仍存在的问题。     

黄渤海风、浪、流等海洋水文要素特征分析

随着我国海洋建设的快速发展,深入了解海洋水文环境特征,为海洋工程等提供保障已迫在眉睫。本文根据日常保障经验,结合相关理论,利用QN（QuikSCAT/NCEP）混合风场、模拟海浪数据等资料,对黄渤海海域的海洋水文特征进行分析,主要分析了该海域的海表风场、海浪场、潮汐潮流、海雾、盐度、SST（海表温度——Sea Surface Temperature）的特征,可为防灾减灾、航海、海洋水文保障、海洋工程、海洋能资源开发利用提供科学依据。     

In-place structural strength and fatigue analysis for floating platform topsides

This paper presents some insights on the state-of-the-art practice that has been utilized recently in the inplace structural strength and fatigue analysis for topsides on deepwater floating platforms such as tension leg plat-form (TLP) and semi-submersibles. Emphases are put on analysis software,geometric and mass modeling,hydro-dynamic loading and its mapping,and analysis procedures. In addition,for the in-place analysis using structure analysis computer system (SACS),the procedure of Visual Basic for Application (VBA) is developed to map AQWA-LINE hydrodynamic loading to the SACS integrated hull/topsides model;for the in-place analysis using structure engineering system analysis model (SESAM),many computer aided applications are made to aid the post-processing. These applications have been used in structural analyses for a few TLP and semi-submersible plat-form topsides,and are briefly introduced in this paper.     

去滑动均值趋势的DeWijs模型多重分形特征分析

运用去滑动均值算法,探讨了De Wijs模型的多重分形特征。结果显示,趋势波动函数Fq(s)与尺度s具有较好幂律关系,Hurst指数h(q)与标度函数τ(q)都是随q变化的非线性函数,且随着富集参数d的增大,多重分形谱f(α)曲线跨度越大,指示多重分形特征越明显。这表明去滑动均值算法是识别De Wijs模型的多重分形特征及区分其分形强度的有效方法,可为进一步应用于实验数据的非线性特征分析提供理论指导。     

Fisher方程行波解的定性分析及线性化解法

物理学、化学和生物学中存在大量的反应扩散现象,著名的Fisher方程就是描述该类现象的一类反应扩散方程。将Fisher方程经行波约化后化为等价的平面自治系统,而后对其有限处奇点、无穷远奇点及闭轨的存在性进行了定性分析,并用线性化解法求解得到其特殊的积分曲线,从而也得到了波速c=±5√6时Fisher方程的波前解。