工程教育专业认证是目前国际通行的最为有效的工程教育质量保障制度,尤其农林类院校的各个专业,更应将数学专业基础用于解决复杂工程问题,因此对农林院校《概率论》课程进行与工程教育专业认证相匹配的考试改革.

针对Lacunary统计收敛与经典统计收敛的相容性问题,利用统计测度理论证明了Lacunary统计收敛与经典统计收敛等价的充分必要条件是相应的Lacunary序列是几何递增的.

This article is not conducive to personnel training our public school mathematics curriculum exist for analysis. By optimizing the teaching reform of the public base class curriculum, common math teaching content and other aspects, improve students' mathematical thinking skills, mathematical literacy and the ability to solve practical problems.

In the research,the principle of color constancy is introduced to differentiate differential structure in nature images and distance regularized level set method is combined in order to segment images with shadows and/or highlights.Experimental results show that the new algorithm can segment the target object effectively and precisely,however,according to the same images the algorithm without introduction of color constancy get wrong segmentation results.

当积分区域具有某种对称性时,利用函数投诉分解式,可以化简并计算有关多元函数的各种积分.

研究平均值函数φ(x)=1/xintegral from n=0 to x(f(t)dt),利用微积分学的有关概念,得到了它和被积函数具有相同或相似的奇偶性、周期性、单调性、连续性、可导性等性质,并配有应用实例.

Fast level set method has been applied to grey images segmentation. In order to implement segmentation for images with shadows and/or highlights, the dichromatic reflection model is combined with fast level set method. Experimental results show that fast level set method with the dichromatic reflection model can segment the image with shadows and highlights successfully, while the method without the support of dichromatic reflection model can not. The performance of the new method is better than fast level set method without the support of dichromatic reflection model.

The simultaneous nilpotency of matrices over an additively idempotent semiring was discussed,and some necessary and sufficient conditions for matrices to be simultaneously nilpotent were obtained.A canonical form for the simultaneous nilpotency of matrices was also given.

Different materials have different microscopic shape structure.In the research,the microscopic images of material are obtained with polarizing microscope.With threshold segmentation algorithm,the coarse segmentation results are obtained,and then with watershed segmentation algorithm,the attached materials are separated,finally the object regions of different material are obtained.With simple geometric characteristics, different shapes are recognized,which can realize the automatic recognition and classification of material compo- nent.