查询词典 approach

Systematically analysing the method on the failure approach of patten recognition of the flood control hydro-project system, combining the social economical efficiency of the flood control system"s invalidation losses, the paper provides the concept "flood disaster risk " and constitutes the failure analysis approach of patten recognition system on the base of the flood progress. Combining with the subsystem functions and the failure probabilistic analysis of the hydro structure, the paper discusses the main failure approach of patten recognition and calculus of failure probability, calculates flood control hydro-project"s total risk.

3系统分析了防洪工程系统失效模式识别的方法，结合防洪抗灾系统失效损失的社会经济性，引入洪灾风险概念，建立了基于洪水过程的系统失效模式识别体系，结合各水工结构子系统功能和失效概率分析，讨论了主要失效模式识别和失效概率计算，对防洪工程系统总风险进行了计算。

In the first approach the metadata extraction is viewed as a classification problem. Three statistic classification models, including Support Vector Machines, Perceptron with Uneven Margins, and Maximum Entropy are studied. The approach suffers from the problems of ignoring the variance in lengths of documents and ignoring the dependency of text units within documents. To solve the problems, our second approach takes the metadata extraction as a sequence data labeling problem and makes full use of the sequential information.

论文首先研究了基于分类的元数据抽取方法，考察了支持向量机、非对称间隔感知机和最大熵模型在ADME中的应用；然后针对分类方法中存在的忽略文档之间的差异、不考虑文档上下文等问题，提出了基于序列数据标注模型的抽取方法，并结合最大熵马尔可夫模型、投票感知机模型和条件随机场模型进行了研究；最后本文根据前两种方法的设计思想和优缺点，研究提出一种新的结构预测模型—— CDASP（Coordinate Descent Algorithm for Structure Prediction），并将其应用于元数据的自动抽取中。

This approach not only inherits the advantages of absolute density based algorithms which can discover arbitrary shape clusters and are insensitive to noises , but also efficiently solves the following common problems: clustering results are very sensitive to the user-deflned parameters, reasonable parameters are hard to be determined, and high density clusters are contained fully in coterminous low density clusters. With this approach, incremental clustering can also be supported effectively by defining the affected sets and seed sets of the updating objects in this approach.

聚类算法的有效性问题主要表现在三个方面：其一，聚类算法大多要求用户输入一定的参数，例如希望产生的簇的数目，而这些参数通常难以确定，特别是针对高维空间中稀疏分布的实际应用数据集，用户几乎无法给出合适的算法参数，因此非专业用户需要与数据分析专家密切配合才能保证获得理想的聚类结果，导致算法的使用极为不便；其二，聚类结果对于输入的参数值过于敏感J，往往参数值的一些轻微变化却产生聚类结果的很大差异；其三，对于高维的实际应用数据集，其数据分布往往是稀疏的、杂乱的，很难为算法选择全局的参数进行准确的聚类分析，使得聚类的质量难以保证。

B OEING TECHNICAL DICTIONARY 40 DECIBEL, A unit of gain derived by computing the tio of input power to output power. ECISION ALTITUDE/HEIGHT, A specified ltitude or height in the precision approach at hich a missed approach must be initiated if the ECISION HEIGHT 1, With respect to the proach or execute a missed approach.

分贝 常表示两个声音信号或电力信号在功率或强度方面的对差别的单位，相当于两个水平的比率的常用对数的十断高度/高，在继续进近必需的目视参考没有建立的情况下开始复的精密进近中的一个指定高度或高。

To select the target word of these verbs in these sentences via SFCM method, MT selecting approach and testee selecting approach seperatively, and to contrast their selecting results with the keys, we may get the match degree to the keys: SFCM method is 92.7%, which is much better than MT approach (52.3%), and better than testee approach (88.06%) too.

分别通过语义特征组合模式、机器翻译系统和人工选择三种方法选择每句原文中动词的恰当义项，将这三种形式的译词选择结果分别与参考译文中的译词进行比较，得到每种形式与参考译文译词的吻合度。

Objective:To provide detailed anatomical data of the theory and practice for endoscopic surgery in the PPF by studying the related applied anatomy of PPF through the lateral wall of the nasal cavity approach of endoscopic middle meatal transpalatine approach、middle meatal transantral approach and inferior turbinectomy transantral approach respectively.

目的：通过鼻内镜下鼻腔外侧壁中鼻道经腭骨入路、中鼻道经上颌窦入路、下鼻甲切除经上颌窦入路三种手术入路方式对翼腭窝进行相关应用解剖学研究，为临床鼻内镜下翼腭窝手术提供详实的解剖学理论和实践基础。

The adaptive filter approach, the Park transform approach,the Hilbert transform approach and the instantaneous power approach are usually utilized to detect the rotor bar breaking fault on-1ine.

针对异步电动机轴承故障，本文就基于振动信号分析和定子电流信号分析的轴承故障检测方法分别进行了讨论。

The first one is approach difference. More than 90% Chinese patients prefer to accept infra-axillary approach for they thought that the incision scar is unobvious. But western patients prefer to accept peri-areola approach and seldom accept infra-axillary approach. For they thought that they like to expose their infra-axillary and then the scar would be found more often.

切口选择：中国求美者大部分约90%愿意选用腋下切口，觉得腋下切口隐蔽；而西方求美者大多选用乳晕切口，很少用腋下切口，因为西方人穿着比较暴露，腋下暴露的机会比较多，会让人看到手术痕迹。2。

Occasionally, this comprehensive approach has allowed riparians to move beyond looking at water as a commodity to be divided — a zero-sum, rights-based approach — and rather to develop an approach that equitably allocates not the water, but the benefits derived there from — a positive-sum, integrative approach,.

偶尔，这种全面的方法也允许流域国超越用日用品分配的方法看待水——一种零和的权利本位的方法，建立一种不是公平分配水，而是分配水所得的利益——一种正和的综合的方法

After comparing the time domain approach of estimating azimuth and slowness in the f-k method with the frequency domain, it is shown that the time domain approach actually is not less accurate or efficient than the improved frequency domain approach, and in the case of signal-to-noise ratio is very low, the results obtained from the time domain approach are more reliable.

进一步对在时域中直接估算信号方位角和慢度的一种算法进行了分析，比较发现时域方法的计算速度和精度都不低于频域方法，且在某些低信噪比的情况下，前者可以给出更可靠的结果。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。