加权

Presently, out best method is based on the support vector machines using as the input feature vectors, the sliding window that includes the local environment descriptors such as PSSM, secondary structure profile and hydropathy indexes.

我的方法是利用支持向量机将局部和整体的蛋白质资讯，其中最好的结果是利用位置加权矩阵、二级结构特徵值和氨基酸亲水程度作为输入向量。

Objective To evaluate the clinical value of DWI in the diagnosis of hyperacute cerebral infarction by case analysis.

目的 通过临床病例分析，探讨磁共振扩散加权成像在超早期脑梗死诊断中的应用价值。

Objective To evaluate the clinical value of DWI in the diagnosis of hyperacute cerebral infarction and hypertensive encephalopathy.

目的探讨弥散加权像在超急性脑梗塞和高血压脑病诊断中的作用。

On the basis of engine idiocratic mathematical model, using the origin underway accelerate time and the oil consumption at the cycle of multi-working conditions as the objective functions of the power performance and the economy performance respectively, and then transform it to a single objective function by using the linear adding.

在建立发动机特性数学模型的基础上，以原地起步连续换档加速时间和多工况循环使用油耗作为衡量动力性和燃油经济的2个分目标，采用线性加权组合的方法将其转换成单一目标函数，建立了汽车动力传动系优化数学模型，利用惩罚函数法对此模型进行了优化，实例计算表明，应用该方法对汽车动力传动系进行优化匹配分析时，整车综合性能均有显著改善。

In conventional indirected parameter estimate, such as Weighted Least Square Method, the changing activity of the injected radiotracer is conventionally measured through multiple consecutive PET image reconstructions. The image of the radioactivity distribution in each frame is reconstructed independently and the whole set of frames is then used to estimate the distribution of the physiological parameter of interest by the application of an appropriate pharmacokinetic model to the time radioactivity curve either of appropriately selected functional regions or of each image element.

传统的间接参数估计方法如加权最小二乘参数估计方法(Weighted Least SquareMethod，WLS)，需要首先从测量数据重建出PET动态放射性活度图像，然后在这些时间上连续的重建图像应用适当的动力学模型上估计感兴趣的生理参数，然而PET重建图像中往往含有极大的噪声，这些噪声将影响参数估计的准确性。

Firstly, by means of the algorithm, a model of tourism route analysing was built after taking some hypotheses and predigestion, secondly, a indirected graph for tourism route analysing was generated via the information about travel industry sites, information about roads and finally this algorithm was investigated by adopting the motheds of giving all conditions and Dijkstra algorithm.

该算法通过一定的假设和简化建立旅游路线分析模型，利用旅游景点信息和公路信息生成旅游路线分析无向加权连通图。

In theory, this kind of interferometer can divide the parasitic interferential signal, meanwhile, it has nonlinear error.

在计算过程中，对时域采样数值进行加权，然后采用多步移相算法进行位相计算，可以有效地抑制谐波误差的影响。

Influences of several factors on the image quality of the poststack migration are further investigated, including interstation spacing, noise level of the data, velocity model used in migration, and earthquake distribution (incident direction of source fields).

首先，考虑盐的浓度的影响，建立了天然气含有甲烷和丙烷两种组分的水合物形成的相变曲线，即温度和压力关系曲线，同时也建立了甲烷和丙烷两种组分天然气溶解度的加权关系。

Five patients received the second MRI examination at the age of 11 to 18 days. RESULTS: Eight patients had antenatal risk factors, 9 had intranatal risk factors, and no postnatal risk factors were found. Seizures as the first symptom were noted in 11 neonates, with a short duration and a low frequency.

回顾分析该院新生儿病房收治的16例新生儿脑梗死患儿临床资料、头部MRI检查(所有病例均于生后5 d内行常规序列扫描后接受弥散加权序列扫描)，其中5例于新生儿期（生后11~18 d）进行了第2次头部MRI检查。

In this thesis, an improved method is proposed to overcome the problem that the circular color histogram method does not take the spatial information of colors into account , combines spatial distribution information with image color features. The presented method adopt color space which has the visual uniform , three components carries on no laddered quantification, three components weighting summation composes the row of the circular color histogram construction, and improves retrieval quality, while rotation and translation invariance of color histogram are kept.

针对颜色直方图对图像的空间信息表现不够的问题，本文提出并实现了环形颜色直方图的改进方法，将图像颜色特征和颜色的空间分布信息相结合，采用具有视觉一致性的颜色空间，并把各通道分别进行非等间隔量化，采用各通道向量加权的形式把各通道组合为一个特征向量，提高了检索质量，并保持了原有算法的有效性和旋转不变性。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐