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Thirdly,we study certain Riemann boundary value problems and Singularintegral equations with values in a universal Clifford algebra 〓,by com-bining the classical methods of solving Riemann boundary value problems andsingular integral equations with the Taylor's expansion of regular function in Clif-ford analysis,proving a lemma which is similar to the Painleve theorem in theclassical complex analysis,and the Plemelj formula in Clifford analysis,we obtainthe better results under weaker condition than before.

第三,本文第一次借助于用来解决经典的Riemann边问题与奇异积分方程的方法来研究Clifford分析中的某些Riemann边问题与奇异积分方程,获得了在比以前文献中条件更弱的情况下,结论更广的结果,并且,它为更进一步地解决在Clifford分析中一般的Riemann边问题与奇异积分方程提供了基本的解决思想,为这一新的研究领域奠定了基础。

Ritz variation method was used to find the numerical relation between the energy near the ground-state of the hydrogen molecular ion H 2 + and the changes of the variation parameter and the bond length,the computation formula of bond length and ground-state energy for H 2 + was also obtained by means of the method of parabolic interpolation .

用Ritz变分法求出了氢分子离子H2 +基态能量附近的能量随变分参数和分子键长变化的数关系,并用抛物线插法获得了H2 +键长和基态能量的及其计算公式,比文献 [1,2 ]更接近于实验

Finally, the average value, root-mean-square value, maximum, minimum, spike factor of wind force, wind force moment are analyzed to studied the mutually interference influences to the base force of high buildings and group of buildings.

最后分析不同状态下风力、风力矩的平均、均方根、最大、最小和峰因子,探讨了风荷载下高层建筑的相互干扰和群楼对建筑物风力影响。

In this article, the effect on the surface topography of the same material was analyzed by different processing methods, the value of surface parameter arithmetic mean R, root-mean-square roughness R and gradient root-mean-square value Z were used to appreciate the surface topography, and the data were processed with the software Matlab.

分析不同加工方法对同一种材料表面形貌的影响,采用表面形貌统计参数中的轮廓高度算术平均R、轮廓高度均方根R、坡度均方根Z,对表面形貌进行评价,结果表明,准分子激光加工表面的R、R,和Z,均比研磨加工表面小。

A class of fast-scale bifurcations appearing around the maximum value of the input voltage is discovered for the first time by experiment. Then the influence of the fast-scale bifurcations on the performance of the PFC converters is discussed. Whether the fast-scale bifurcations will appear and how wide the bifurcation region depend on the characteristics of the current loop output. Therefore, the main factors that affect the current loop output are analyzed, including the current loop parameters, inductance, and root-mean-square value of the input voltage.

通过实验,该文首次发现了一类在输入电压最大附近发生的快时标分岔;详细讨论了快时标分岔对PFC变换器性能的影响;由于电流环输出的特点决定了变换器是否会出现快时标分岔以及分岔区域的大小,该文分析了影响电流环输出的主要因素,包括电流环参数、电感和输入电压有效

The algorithm utilizes the rotating transformation theory of vector, and derives a mathematical expression of trigonometric function which has the interval monotonicity. By comparing the values of mathematical expressions, the sizes of the angles can be judged, this avoids the troublesome calculations of angles, diminishes errors and raises efficiency.The prototype of 3D reconstruction system uses the DXF file as the data source.

文中的算法采用矢量的旋转变换理论,通过计算各分支路径与当前路径之间的三角函数,利用变换后的三角函数表达式的区间单调性,将角度的比较转换为三角函数表达式的比较,从而避免了繁琐的角度计算,减少了误差,提高了执行效率。

Result: The ROM of group A had no significant difference with that of the control group. The ROM of group B had no significant difference with that of the control group except rotation, each ROM of group C and group D was significant difference with the control group, and the ROM of group D was the biggest. The ROM of group E was the smallest and had statistically significant difference in each motion compared with the control.

结果:A组ROM与对照组无显著性差异;B组除旋转外与对照组无显著性差异,旋转稳定性也达到了对照组的61.86%;C组与对照组均有显著性差异;D组ROM最大,与对照组有显著性差异;E组除后伸外ROM均明显小于对照组,差异有显著性(P.05)。

In the research, 28 characters including energy, informationization measure, fractal dimension, hue, cb, color moment, disease spot area, rotundity, figure factor, and others were extracted, and four approximate features were selected from 28 primordial features. The results indicated that the precision of the three kinds of maize disease recognition was higher than 90%.

研究中提取了墒、相关信息测度、分形维数、H、Cb、颜色矩、病斑面积、圆度、形状因子等28个特征向量,利用遗传算法优选出H、颜色矩、病斑面积、形状因子等4个独立、稳定性好、分类能力强的特征向量,应用费歇尔判别分析法识别病害,准确率达到90%以上。

In orthogonal experiment(L934), We discovered that every combination included varies sources of carbon, sources of nitrogen, pH and salt concentration had great influence on P-solubilizing abilities of 4 PSB strains. Glucose was best source of carbon; all of them could use saccharose and Lx191 could use amylum.

经过对碳源、氮源、pH 、盐浓度4 水平9 组合的正交试验,发现各种组合对溶磷菌溶磷量都有较大影响,葡萄糖是最好的碳源,氮源、pH 、盐浓度对溶磷量、pH、有机酸的影响在不同组合中各菌株表现不同。

Study on the optimal conditions of cellulase from termites The optimal pH when Cx from Reticulitermes flaviceps reacted with substrate sodium carboxymethylcellulose was between 5.0-7.4 and 5.0-6.2 when BG enzyme was reacted with substrate salicin, the relation between activities of enzymes and relevant pH values accorded with Quadratic models.

一、白蚁纤维素酶最适反应条件研究黄胸散白蚁 Reticulitermes flaviceps C_N酶与羧甲基纤维素钠(Carboxymethylcellulose sodium,CMC-Na)反应的最适pH范围在5.0-7.4之间,BG酶与Salicin反应的最适pH为5.0-6.2,2种酶的活性均与pH符合二次项曲线模型。

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Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.

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