论客户关系管理系统CRM在酒店行业中的重要性

尽管CRM在旅游业中广泛使用，但是在旅游方面的学术研究中较少文献涉及到客户关系管理。本文希望更多人关注到CRM在旅游领域研究的必要性，以便在学术研究和旅游行业之间建立一座桥梁，在顾客关系、信息系统以及市场研究方面分享更多的见解。     

Graphic processing unit based phase retrieval and CT reconstruction for differential X-ray phase contrast imaging

Compared with the conventional X-ray absorption imaging, the X-ray phase-contrast imaging shows higher contrast on samples with low attenuation coefficient like blood vessels and soft tissues. Among the modalities of phase-contrast imaging, the grating-based phase contrast imaging has been widely accepted owing to the advantage of wide range of sample selections and exemption of coherent source. However, the downside is the substantially larger amount of data generated from the phase-stepping method which slows down the reconstruction process. Graphic processing unit （GPU） has the advantage of allowing parallel computing which is very useful for large quantity data processing. In this paper, a compute unified device architecture （CUDA） C program based on GPU is introduced to accelerate the phase retrieval and filtered back projection （FBP） algorithm for grating-based tomography. Depending on the size of the data, the CUDA C program shows different amount of speed-up over the standard C program on the same Visual Studio 2010 platform. Meanwhile, the speed-up ratio increases as the size of data increases.     

海上风电系统地基刚度敏感性分析

文章基于Bladed软件建立了包括海上风电机组-支撑结构-地基基础的一体化结构模型，以某5 MW机组的单桩基础为例，对海上风电机组系统进行了一体化荷载计算，并系统地开展了地基刚度敏感性分析。计算结果表明：结构自振频率随着地基刚度的提高而增大，且在无波浪作用时，结构在泥面处的荷载呈现随地基刚度增大而减小的趋势；当有波浪作用时，结构在泥面处的荷载受到风、波浪作用的综合影响，当波浪频率接近基频时，结构所受荷载显著增大。因此，设计时应充分考虑地基刚度取值准确性问题。