Pervious research in pca and flda mainly focuses on vector - based pattern representation methods for feature extraction and dimensionality reduction , i . e . all patterns must be transformed into vector before any subsequent processing . so patterns represented in matrix form ( e . g . an image ) must be stretched into vectors in preprocessing step 现普遍使用的pca 、 flda方法，是针对向量模式进行的特征提取和降维方法，亦即，所有的模式都要进行向量化的操作，因此对于矩阵表示的模式(如图像)就必须首先将其转换成向量。
Firstly , by the method of laplace transform , one dimensional consolidation of one - layer gibson soils under time - depend loading is studied and the analytical solutions in frequency domain are obtained . on the basis of the solutions obtained and the computation through programming , the influence of some parameters and loading conditions on the consolidation behavior under trapezoidal , triangular and rectangular cyclic loading , is investigated . secondly , one - dimensional consolidation of one - layered gibson soils with semi - pervious boundaries is studied in this paper , and according to numerical examples , some characters of consolidation such as the effective stress and settlement in the soils under arbitrary loading are found 首先运用了laplase变换获得了单层gibson地基(压缩模量随深度线性增加的地基)在任意荷载下频域内的一维固结解析解，通过laplace逆变换，基于以上解答用数值方法编制程序对单层地基在常见荷载(骤加荷载、缓加荷载、矩形波载、三角形波载)作用下的一维固结性状进行了讨论，并与传统的太沙基理论进行了比较。
When i was as old as you , i was a feeling fellow enough ; partial to the unfledged , unfostered , and unlucky ; but fortune has knocked me about since : she has even kneaded me with her knuckles , and now i flatter myself i am hard and tough as an india - rubber ball ; pervious , though , through a chink or two still , and with one sentient point in the middle of the lump “此外，我曾有过一种原始的柔情。在我同你一样年纪的时候，我是一个富有同情心的人，偏爱羽毛未丰无人养育和不幸的人，但是命运却一直打击我，甚至用指关节揉面似地揉我，现在我庆幸自己像一个印度皮球那样坚韧了，不过通过一两处空隙还能渗透到里面。在这一块东西的中心，还有一个敏感点。
