Consequently , this scheme is feasible and valid . the research enriches the contents of variational assimilation and makes it more extensive application , which increases the quality of initial fields in nwp 因此，将遗传算法应用于四维变分资料同化是切实可行而且有效的，这一工作丰富了变分同化的内容，使变分同化技术作为提高数值预报初始场的质量这一有效技术得到了进一步的应用。
It is helpful for us to understand and explain the complicated relationships between ethnic groups in america and the recognition and assimilation of them by investigating the theories which indude the anglo - conformity model , the melting pot model and the cultural pluralism model etc 对于它们的?解有助于我们理解和解释日渐复杂的美国族裔集团之间的关系及族裔集团在美国的认同与同化的进程。
Even the character and accent of the two peoples had shades of difference , despite the amalgamating effects of a roundabout railway ; so that , though less than twenty miles from the place of her sojourn at trantridge , her native village had seemed a far - away spot 尽管那条蜿蜒而过的铁路起到了一些同化的作用，但是两边的人甚至在性格和口音方面也有细微的差别因此，虽然她的故乡离她在特兰里奇的短暂居处还不到二十英里，但是已经似乎变成了一个很遥远的地方。
First of all , based on the psychology definition , this thesis puts forward two basic modes of conception learning : conception form and conception assimilation . for instance , take how the conception of " rectangle " comes into being to explain how a conception is formed ; take the conception of " lineal function " to explain the assimilation of conception . at last , take the study of " variant beeline " to make further explanation that the combination of conception form and conception assimilation always makes a conception 首先，本文以概念的心理学定义为基础，提出概念形成与概念同化是概念学习的两种基本方式，并以“矩形”概念的形成为例，阐述了概念形成的过程；以“线性函数”的概念为例，阐述了概念同化的过程；最后以学生学习“异面直线”的概念为例，进一步阐述：概念的建立，往往是概念形成与概念同化的有机结合。
The vertical diffusivity coefficients kv in january , april , july , october , 1997 are studied respectively . the result is same as the fact that the vertical diffusivity coefficient is large near the coastline and the vertical diffusivity coefficient is small in the interior . the vertical diffusivity coefficient assimilated in january is larger and the possible reason is that the vertical mixing of the south china sea is stronger in winter and there is a cool eddy in winter in the south china sea 我们分别做了1997年1 、 4 、 7 、 10月份的k _ v ，结果与垂直混合系数在岸边附近较大，在海洋内部较小这一事实相一致， 1月份同化的垂直混合系数值偏大分析原因是冬季南中国海垂直混合较强，可能也与在南中国海内部冬季有一个冷涡有关系。
In this thesis , studies were carried out on the theoretical schemes of data assimilation and their applications on sea fluid field , the three - dimensional baroclinic primitive equation model - hamburg shelf ocean model ( hamsom ) - being one part of the three ones that constitute the data assimilation ( da ) system . effective modification on schemes of da were obtained and applications on topex / poseidon ( t / p ) data results that covering the area of yellow sea and east sea were done . the final results became closer to the objective nature 本文以三维陆架海模型( hamsom )作为数据同化系统的模型部分，深入研究了数据同化的理论方法和在海洋流场数据处理中的应用，对海洋场的数据同化方法提出了行之有效的改进，并将中国黄、东海区域内的topex poseidon ( t p )数据和理论模式的计算结果相结合，进行同化处理，获得了更接近于真实的结果。
