查询词典 space model

This paper adopts Hidden Markov Model in part-of-speech tagging for English texts.Firstly the authors intro-duce the improvement on Viterbi algorithm and the step in training computer by means of hidden Markov model.Sec-ondly,through a series of contrast experiments the authors come to the conclusions:The Bigram model is better than the Trigram model in terms of the performance-cost ratio.

利用隐马尔可夫模型对英语文本进行词性标注，首先介绍了对Viterbi算法的改进和基于HMM模型方法训练机器的步骤，然后通过一系列对比实验，得出两个结论：二元文法模型的"性能价格比"较三元文法模型更令人满意；词性标注集的个数对词性标注的准确率有影响。

Based on dynamic test data, using curve fitting and optimum method, three dynamic empirical model are developed according to the principle of minimizing errors, they are trilinear hysteresis model, variable linear hysteresis model and variable nonlinear hysteresis model.

对系统辩识模型作出了改进，把准静态特性的幂函数乘积模型与辩识模型相结合，形成了制动器的理论分析模型。

We build a Multi-Agent Sharing Model based on the Bar Model and it keeps the advantages of the past model. Besides, our new model improves the disadvantages about unadvisable setting of the individual behavior.

我们保留过去模型的优点，改善过去模型对於个体行为不合理的设定，以酒吧模型为基础，设计了一个符合真实状况的多人共享有限资源模型。

At last, all related problems due to ship type and towing speed influencing the quality of captured images and results were discussed. A ship model with V-shape bottom and protruding keel might cause some disadvantages for PIV measurements. The use of longer laser light ducts extending deeper is a possible solution. A ship model with light yellow paint will cause the unproportionate of light and will cause white background on captured images. It is suggested to re-paint the ship model in black or dark colors to solve this problem. In high-speed test conditions, a ship model's bow waves entrain large amount of air bubbles into water and those bubbles will block the view of camera causing some random black spots in the images. Thus, it is necessary to remove the useless black spot data and repeat the same test condition if statistics requires enough number of images.

本文讨论建立此系统之技术及实验方法，设备的架置方式和配置为一可调性调整之开放式架构，质点施放方法以一自制的施放架於实验前先布置於测试段中，并制定一实验流程规范，再分别针对实验所得滑航型及排水量型船模的流线方向及切流线方向各不同位置及船速之速度进行流场分析；实验结果发现不同船型会造成不同的实验困难：船形上突起之龙骨及V形船底会遮住照明光线，可利用较深之导管调整光页角度改善；而浅色船模表面会造成光线的不均匀，可以更改船模涂装颜色改善；高速实验的气泡会不定点的遮住光线，须先除去无资料区域并使用更多资料组数来改善。

Main points of this paper are as follows:(1) to explain emphatically and to prove the Jukes-Cantor Model, Kimura Model and the relationships of them;(2) to construct and to prove, using EM algorithm, the theorems of estimating best branches of DNA sequences having censored data for Jukes-Cantor Model under the conditions of rooted tree and unrooted tree respectively;(3) to construct and to prove, using EM algorithm, another three theorems of estimating best parameters of DNA sequences having censored data for Kimura Model under the conditions of rooted tree and unrooted tree.

本论文的重点在于解释和证明Jukes-Cantor模型、Kimura模型及两模型之间的关系；运用EM算法构造并证明Jukes-Cantor模型下含缺损数据的DNA序列构建有根树的最佳分枝长度估计定理；运用EM算法构造并证明Kimura模型下含缺损数据的DNA序列构建有根树的最佳参数估计定理。

Second, we point out that the AAM model contains redundant information between the shape and the texture on the basis of the study of AAM model. We remove the unsoundness, directly establish the relationship between the shape and texture, use texture to determine the shape, then establish PCA model of the difference image, and use this model to predict the next position to get the texture information form this position, and redetermine the shape and its position.

其次，在深入研究AAM模型的基础上，本文指出了AAM模型的形象模型包含了冗余信息，并对此进行改进，直接在形状和灰度之间建立起联系，由灰度确定形状，然后再对差分图象建立起PCA模型，由此模型预测下一步的位置变化，在从此位置上获得灰度信息，重新确定形状及其位置。

When the scale of model application is considered, soil erosion model can be classified into upland model and watershed model.

主要从这4个方面入手，介绍了国内外土壤侵蚀量预报模型研究的主要成就，指出了现有模型的不足。

12H treatment group compared with 12h model group: the level of SOD, MDA of the Gardenoside group is no different with the model group; the level of the SOD of the Baical in group increase and the level of MDA is no different; the level of SOD of the Concha Margatitifera Usta is no different and the MDA of it decreased than the model; the level of SOD of the Cholic Acid group increased and the level of MDA decreased; the level of SOD of the Hefang Group increased and the level of MDA of it decreased than the model group.

考虑nNos可能只是参与缺血早期的神经毒性作用。到缺血24小时这一时程已经减低或耗竭。大鼠局灶性脑缺血12小时模型组缺血脑组织P53光密度值含量较正常组明显增高（p＜0.01）。珍珠母治疗脑缺血12小时组缺血脑组织P53光密度值较缺血12小时模型组明显降低。胆酸治疗脑缺血12小时组缺血脑组织P53光密度值较缺血12小时模型组明显降低（p＜0.05）。栀子苷治疗脑缺血12小时组缺血脑组织P53光密度值较缺血12小时模型组明显降低（p＜0.05）。

24H treatment group compared with 24h model group: the level of MCP-1 of the Gardenoside group decreased, but the level of MIP-1 of it is no different with the model group; the level of the MCP-1 of the Baicalin group increase and the level of MIP-1 of it all decreased; the level of MCP-1 and MIP-1 of the Concha Margatitifera Usta all decreased; the level of MCP-1 of the Cholic Acid group decreased and the level of MIP-1 is no different with the model group; the level of MCP-1 and MIP-lof the Hefang Group decreased than the model group.

在本实验中，脑缺血能够诱导P53蛋白表达，P53蛋白可能参与调控缺血后神经细胞延迟性死亡的病理生理过程，药物通过抑制细胞凋亡，从而发挥治疗作用。五、大鼠局灶性脑缺血12小时模型组缺血脑组织HSP70光密度值含量较正常组明显增高（p＜0.05）。珍珠母治疗脑缺血12小时组缺血脑组织HSP70光密度值较缺血12小时模型组无显著性差异（p＞0.05）。胆酸治疗脑缺血12小时组缺血脑组织HSP70光密度值较缺血12小时模型组无显著性差异（p＞0.05）。

It contains establishing control model of this engine, the models are based on engine average value in time, they can be divided as intake manifold, engine dynamics, velometer section and other subsystem model of CBM engine. Besides these, it also contains model of sensors using in engine intake system and running detection, model of step motor using in driving throttle.

文章主体的内容包括建立发动机燃用变组分燃料的控制模型，建模的思路是采用基于时间的发动机平均值模型，其中分为进气歧管、发动机动力学、调速器等发动机各子系统模型，另外包括对发动机进气系统、运行参数进行检测的传感器模型以及驱动阀门的步进电机模型等。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。