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A new method based on subtractive image segmentation for weighted image fusion is put forward from another viewpoint. It adopts the improved particle swarm optimization to calculating the segmentation threshold of subtractive image and the corresponding weighted fusion coefficient in space domain or in wavelet decomposition domain. Moreover, it doesnt need to construct the eigenspace and quantitative eigenvalue for the weighted fusion coefficients.

本文从另外一个角度提出了一种基于差值图像分割的加权图像融合方法，它采用改进的粒子群优化方法在空间域或小波分解域求解差值图像的分割阈值和对应的加权融合系数，而不需要为计算融合系数而构造特征空间和定量特征关系。

This functional map of the same cortex was compared with that elicited only by a horizontal or vertical grating stimulation in the whole visual field. Accordingly, the accurate position of the retinotopic eccentricity of the cortex in visual field could be demarcated by calculating the cross correlation coefficient of the two functional maps.

将这种方位功能图和用单一方位全屏光栅刺激所得到的功能图进行比较，通过计算每一象素的互相关系数，从而获得皮层的精确视野拓扑离心度。

The varying tendencies of partition coefficients of some compounds in aqueous or nonaqueous solvent systems by calculating the phase equilibria with universal quasichemical functional group activity coefficient model are predicted. These compounds included saturated and unsaturated fatty acids ethyl esters,N2,4dinitrophenylamino alcohols, pnitrophenyl glucosides and so on, with simple structures and much differences in polarity.

以饱和及不饱和脂肪酸乙酯、2，4二硝基苯胺基脂肪醇和对硝基苯基葡萄糖甙等结构较为简单、极性差别较大的溶质系列为研究对象，应用修正的通用基团活度系数模型，通过相平衡计算，预测了它们在含水或不含水的溶剂体系中分配系数的变化趋势，并与前人的工作进行了对比。

With the raise of a calculation method on dynamic friction coefficient of downhole tubing, the calculating accuracy of vertical conduit flow pressure is strengthened for a gas well, which promotes the dynamic analysis and prediction on gas well production.

气井井下油管动态摩阻系数计算方法的提出，提高了气井垂管流动压力计算的精度，对气井生产动态分析和预测起到了很好的推动作用。

Accurate understanding and calculating the total fracturing fluid leak-off coefficient is both key problem to the fracturing design and the important matter to the analysis after fracturing.

准确认识和计算压裂液综合滤失系数，既是压裂施工设计中的一个关键问题，也是压后分析评估的一个核心内容。

To present such a coefficient and its calculating method is one of the most important results of this paper.

提出截面损伤系数及其计算应用方法是本文最主要的研究成果之一。

A new method for calculating loss torque of coiler is introduced. After loss torque of coiler was calculated and compensated by the new method, system tension was stable, operation was reliable, thin strip break event was eliminated, and yield was improved.

本文介绍了一种计算卷取机损失转矩的新方法，采用该方法对损失转矩进行计算并补偿后，系统张力保持稳定，运行可靠，克服了以往薄带容易断带的现象，提高了成品率。

Aberration and retardation effects are also taken into account when calculating pulse phase, colatitude angle and position angle.

在计算辐射的相位、余纬角和偏振位置角过程中考虑了光行差效应和延迟效应。

Methods: Analyzing coliform group in food inspection results of the uncertainty of the source and calculating the uncertainty of the test results.

分析食品中大肠菌群检验结果的不确定度的来源，计算检验结果的不确定度。

Optimization was carried out for absorber thickness and length of collimator, and the calculating result was evaluated.

采用MCNP程序对准直器的长度和吸收片厚度进行了模拟优化设计，并对计算结果进行了评定。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。