查询词典 initial data

In this paper, the MM5 Adjoint Assimilation System is used to correct MM5's terrain error. The experimental results of amending different initial terrain data indicate that: the MM5 AAS is able to retrieve the terrain field, whose resolution is matched with one of the initial meteorological element field and therefore well coordinated with the MM5 model. Thus a new way about how to widely use the assimilation system is offered in this paper.

将伴随模式同化系统应用于修正模式地形误差，通过对不同初始地形的修正试验表明，MM5伴随模式同化系统能很好地对地形误差进行修正，能够反演出与初始气象要素场分辨率相匹配、与模式更协调的地形场，为伴随模式同化系统的广泛应用提供了一种新的思路。

In this paper a genetic algorithm four-dimension data assimilation system was applied to the more complex MM5 model, we verify the performance of the genetic algorithm assimilation system, we take the a heavy rainfall process during 04-05, July, 2003 as the experimental research object, and carry out data assimilation experiment of actual observation data, compare the experimental results of the genetic algorithm assimilation system and MM5 adjoint model assimilation system with the experimental results without assimilation, the following is the result:genetic algorithm assimilation system is used not only in a barotropic primitive equation but also in the complex model, MM5, for example, in the ideal experiment the result of the genetic algorithm assimilation system is better than the MM5 adjoint model assimilation system, in the assimilation experiment of actual observation data, whichever assimilation system is used, the initial field of numerical prediction model is effectively improved and the prediction effect of physical field and rainfall are somewhat enhanced.

本文将遗传算法的四维同化系统运用到更复杂的MM5模式中，在理想实验中验证遗传算法同化系统的性能，并以2003年7月4日"南京暴雨"作为研究对象，进行了实际观测资料的同化，并将遗传算法同化系统和MM5伴随模式同化系统得到的结果跟未同化的结果进行了比较，结果如下：遗传算法同化系统不仅可以用在正压原始方程模式上，同样也可以用在MM5等复杂模式上，理想实验证明了遗传算法同化系统优于MM5伴随同化系统，在实际观测资料同化中，采用两种方法的同化系统都能有效地改善数值预报模式的初始场，能在一定程度上提高物理量场和降水量的预报效果。

Furthermore data assimilation experiments are conducted with MM5 Adjoint-model Assimilation System made by adjoint codes. With a case of heavy rainfall taking place from 00h July 23 to 00h July 24,2002, several numerical simulation experiments of different schemes are performed. The results are as follows. MM5 Adjoint-model Assimilation System not only can improve the initial field effectively and promote the coordination with the model but also can enhance the forecast on the precipitation and other elements. The assimilation of CDW has an improvement on quality of upper wind. The effect of direct numerical simulation with utilizing the CDW to amend the initial field gains the advantage over the one not.

结果表明，MM5伴随模式同化系统能有效改善初始场与模式的协调能力，提高模式对于降水场和其它要素场的预报；使用云导风资料修正初始场后直接模拟的效果比未使用时直接模拟的效果要好，对部分区域的强降水预报精度有一定程度的改善；使用伴随模式同化系统后，加入云导风资料的同化试验对其它要素的改善与直接同化常规资料的效果相比，改善优势不明显，但从各要素的误差来看，对于风场的改善最好。

This method adopts data-based optimization algorithm to design the initial prediction operator and update operator at each decomposition scale, the initial prediction operator and update operator are interpolated with zero, and then the redundant prediction operator and redundant update operator are obtained.

该方法采用基于数据的优化算法，设计每层小波分解的初始预测器和更新器，然后通过对初始预测器和更新器进行插值补零运算，来获得冗余预测器和更新器。

In the invention, according to the channel selected by user, the client side determines the media server corresponding to the channel and the father node of the client side in the P2P system; according to the correlative information of the father node, the client side determines the initial fragment group ID of current process, and sends a request message for requesting the data of the channel to the media server; said request message contains said initial fragment group ID; said client side receives the channel data sent from the media server based on the initial fragment group ID, and receives the channel data sent from each father node.

本发明涉及互联网技术领域，尤其涉及一种网络通信数据处理方法、网络通信系统及客户端，用以减少选定频道的播放延迟。在本发明中，客户端根据用户选定的频道确定对应的媒体服务器及该客户端在点对点系统中的父节点；该客户端根据父节点的相关信息确定本次数据处理的起始分片组标识，并向该媒体服务器发送请求该频道数据的消息，该消息中携带该起始分片组标识；该客户端接收该媒体服务器根据该起始分片组标识发送的该频道的数据，且接收各父节点发送的该频道的数据。

Secondly identifies the relation of G / S model and space data services platform , space data services platform is the core of G / S model, the current space data service platform is in the initial stage of development, and the "Digital Earth platform" as a kind of space data service platform is the key issue which is studied , and with other space data services platform, it has many characteristics and advantages.

其次肯定了G/S模式与空间数据服务平台的关系，空间数据服务平台是G/S模式的核心，当前的空间数据服务平台正处于发铺的初级阶段，而"数字地球平台"是本课题重点研讨的一种空间数据服务平台，和其他空间数据服务平台比拟具有良多特色和长处。

According to the method, an initial classification was firstly performed by use of the conventional transitive closure method, and then an initial division matrix was constructed. With the weighted fuzzy ISODATA method for iterative computation of the related data, the data were classified effectively.

该方法首先利用传统的传递闭包方法得到1个初始分类，并在此基础上提出初始分划矩阵，根据考虑权重因子的模糊ISODATA方法对相关数据进行迭代计算，从而对数据进行有效分类。

On the basis of the preprocessed binaryzation image, and according to the statistical characteristic of the comb-shaped chart and image texture features of the data page, this algorithm is aimed to intercept the image of the optical card data page by estimating the initial coordinates and length-width of a complete data page.

该算法是在一个预处理的二值化图像基础上，依据梳状图的统计特性和数据页的图像纹理特征，对一个完整数据页的起始坐标和长宽进行估算，达到对光卡数据页的图像截取的目的。

According to the pertinent data research knew that,The overseas equipment is makes about 1000 times in the test platform, eliminates the initial period breakdown in the test chamber, because the direction valve use reliable curve is the bathtub curve, namely use initial period and the later period failure rate is highest, therefore carries on the movement and several dozens hour circulation flushings before the installment to the valve, causes the high breakdown the use initial period to pass in the test chamber, thus has obtained the high equipment reliability.

据有关资料研究得知：国外设备是在试验台上作1000次左右，将初期故障消除在试验室，因为方向阀的使用可靠性曲线是浴盆曲线，即使用初期及后期故障率最高，因此在安装前对阀进行动作及几十小时循环冲洗，，使高故障的使用初期在试验室度过，从而获得了高的设备可靠性。

LabVIEW 7.0 Express-based program for determining second-order reaction rate constant by electric conductivity is designed. It can process the data with both equality and inequality of initial concentrations, avoiding complex process of manual processing data and personal error produced in data processing by handwork and improving veracity and repeatability of the experiment results.

研制了基于LabVIEw 7.0 Express的处理电导法测定二级反应速率常数实验数据程序，对反应物初始浓度相等和不等条件下均可处理，避免了人工处理数据的复杂繁琐过程及人工处理过程中的人为误差，提高了实验结果的准确性和重现性。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。