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In this paper, a code TFEM-2D (Triangular Partition, Finite Element Method Two-dimensional Problem) for the few-group, two-dimensional, geometrical neutron ...

本文在FELIX C－512计算机上用FORTRAN Ⅳ语言编制了在、几何下的二维少群中子扩散程序TFEM－2D（Trianglular Partition； Finite Element Method Two－dimensional Problem）。

The invention discloses a vehicle speed matching method based on linear array CCD image, including the following steps that: two linear array CCD video cameras are respectively arranged on two sections positioned on a road at intervals; both linear array CCD video cameras face downwards and are provided with infrared ray laser source; the frame rate of each CCD video camera is more than 1,000 frames per second, and the resolution is more than 1,024 lines; correlation matching computation of the image sequences obtained by both linear array CCD video cameras is carried out to obtain the time difference of the same object in two image sequences; finally, by means of the time difference and the distance between both cameras, the driving speed of an object vehicle can be obtained according to the velocity formula V=s/t.

本发明公开了一种基于线阵CCD图像的车辆速度匹配方法，该方法在道路相距一定距离的两个断面上分别安装两个线阵CCD摄像机，两个线阵CCD摄像机指向垂直向下，线阵CCD摄像机上配有红外线激光源，线阵CCD摄像机的帧速率大于1000帧/秒，分辨率大于1024线；对两个线阵CCD摄像机得到的图像序列进行相关匹配计算，从而获得同一个目标在两个图像序列中的时间差，利用该时间差和两个摄像机的距离，根据速度公式V＝s/t即可以得到目标车辆的行进速度。

The reconstruction problem is ill-posed, so two optimal criterions, the least module and the smoothness criterion base on Tikhonov regularization technique, are introduced into reconstruction algorithm. Many regularization parameters choice strategies are investigated, and the TPA(Two—Parameter Algorithm) strategy which is based on the Morozov discrepancy principles, is implemented in two regularization reconstruction algorithms.Numerical experiment results show that the nonnegative and smoothness constraint condition can overcome the difficulty of iteration semiconvergent, preconditioned technique can improve convergence rate and reconstruction accuracy, smoothness regularization criterion can meliorate ill-posed problem of reconstruction and enhance iteration stability, and the TPA is an effective strategy of regularization parameters choice.

数值试验表明：在共轭梯度法中引入非负约束和光滑约束改善了迭代的"半收敛"性，非负约束保证了解的非负性，光滑约束抑制了重建解的振荡现象，约束算法的重建精度与无约束算法相比大幅度提高；在约束共轭梯度重建算法中引入预优技术，可以加快算法的收敛速度，提高迭代的稳定性和重建精度；引入光滑准则的正则化技术可以有效改善图像重建问题的不适定性，加快迭代的收敛速度，提高迭代的稳定性和图像重建质量，计算正则参数的TPA算法在闪光照相图像重建中是有效的。

Within the hippocampus, genes encoding two neural signaling chemicals, the neuropeptides Grp and Nmb, are expressed in two distinct areas, suggesting functional differences between the two parts.

在海马区，基因编码了两种神经信号化学传导物质，即神经肽Grp 和 Nmb，他们在两个不同的区域里表达，并显示了不同的功能。

Firstly, the paper introduced the working principle and device of the two-pass grate-rotary kiln and had an analysis method of mechanics of the tyre. We have put forward the finite element analysis of the contact stress of the tyre-roller based on the whole construction mode of shell-kiln liner-large gear-tyre-roller of the rotary kiln and obtained the strength and distributing rule of the tyre's contact stress. The research shows that within one week the contact stress mainly lies in two leading peak value and catastrophe which appear at the contact zone of the tyre and supporting roller. Then we regarded the tyre's stress as the test of unknown plane stress of principal stress. Utilizing mature and modern testing technology, we raised the testing principle and scheme of tyre stress and then had a on-the-spot test of the stress. Comparing the analysis result of the test with the one calculated from the finite element analysis, it proofed the rationality of finite element analysis method of integral modeling and the correctness of the contact stress result of the tyre and roller. Finally, for two-pass of similar rotary kilns, using the ANSYS APDL re-development technology, carried on the re-development about the overall finite element analytic method of thecontact stress of tyre-roller.

首先，本文介绍了2档回转窑的工作原理和装置，对滚圈的力学行为进行了分析，提出了基于筒体-滚圈-托轮的回转窑整体建模的有限元分析法，来对滚圈-托轮的接触应力进行有限元分析与计算，得到了滚圈接触应力的大小和分布规律，并求得滚圈外中内圈节点的主应力；其次，把滚圈的受力看成是主应力未知的平面应力的测试，利用现代测试技术，提出了滚圈主应力测试的原理和方案，并对滚圈的主应力进行了现场测试，现场测试分析结果与有限元分析计算出的主应力相比较，证明了整体法建模的有限元分析方法的合理性和滚圈-托轮接触应力结果的正确性；最后，利用ANSYS的APDL的二次开发技术，针对2档同类回转窑，就滚圈-托轮接触应力的整体有限元分析法进行了二次开发。

Since there is natural different of the kinematic density formula for pairs of intersecting lines in two-dimensional surface and three-dimensional space, the inequalities for double chord-power integrals have studied from two side of two-dimensional surface and three-dimensional space using chord-power intergral inequality. Schwarz inequality. Holder inequality and so on.

由于二维平面和三维空间上的相交直线偶的运动不变密度公式有着本质的不同，本文从二维平面和三维空间两个角度，利用弦幂积分不等式，Schwarz不等式，Holder不等式等不等式分别得到了一系列双弦幂积分不等式。

Ancient times the Babylon civilization located the environment belonged to the subtropics desert climate, but benefitted from two rivers, young sent pulls the bottom river and the Tigris River mother's gracious gift, was having the exceptionally broad impact plain, but by was in the arid few rain in the middle of the desert climate, on the one hand thus created the local wooded area to be very few, on the other hand was the great plains which so stretched to the horizon smoothly like baffles, from this has become the sierra absolute forbidden area, from this occupied the plain center region people, even if wanted to use the firm stone material, also could because was far away, either was gives way before difficulties looks Shi Xing to sigh, either was after pays the extremely soaring price, shipped in by farSeveral stones only can use in actually carving the magnificent precious tombstone, even was in some plain person all not once has seen the mountain appearance for a lifetime, in brief took root in two river basin Cuban Billen civilization, finally is framed was the soil texture civilization, they created the cuneiform character, all could not but engrave above the thin clay tablet, was recording the exceptionally precious history, obviously in the different region humanity, all was influences subtly sparely no effort regarding the side each kind of environment resources use.

古代巴比伦文明所处的环境属于亚热带沙漠气候，但得益于两条河流，幼发拉底河与底格里斯河母亲般的恩赐，拥有着异常广阔的冲击平原，但由处于干旱少雨的沙漠气候当中，从而造成一方面当地森林面积很少，另一方面就是如此一望无垠平坦如砥的大平原，由此成了山脉的绝对禁区，由此处在平原中心区域的人们，即使想使用坚固的石头材料，也会因为路途遥远，要么是知难而退望石兴叹了，要么是在付出极为高昂的代价后，远远运来几块石头却只能用于雕刻华丽珍贵的墓碑，甚至是有些平原中的人一辈子都不曾见过大山的模样，总之植根于两河流域的古巴比伦文明，最终被定格为土质文明，就连他们所创造的楔形文字，都不得不刻印在薄泥板之上，来记载着异常珍贵的历史，可见不同区域内的人类，对于身边各种环境资源的利用都是潜移默化不遗余力的。

The results are as follows:(1) With the imposing of orthopedic force of simulating maxillary protraction on maxilla, in the sagittal direction, the maxillary complex of the SD Rats in experimental group grows more quickly than that in two control groups, and the extent of the maxillary complex increases more evidently. The maxillary complex displays anti-clockwise forward and upward rotation.(2) With the imposing of orthopedic force on maxilla, upper incisors exhibit labial-inclined, labioclination of lower incisors changes insignificantly, and the shape and the dimension of skull are not affected significantly.(3) The expression of TGF-3 , in frontomaxillary sutures and palatomaxillary sutures shows different intensity in different extent of time. But The expression of TGF-{3, in experimental group is more intensive than that in two control groups, and that in operated control group and natural growth group has no significant difference.

结果如下：在模拟上颌前牵引矫形力作用下，(1)生长发育期大鼠上颌复合体在矢状方向生长加快，长度明显增加，并表现出向前向上的逆时针旋转；(2)上切牙唇倾，下切牙的唇倾度没有明显变化，颅脑的形态与大小不受影响；(3)额颌缝和腭颌缝中TGF-β_1的表达，同一时段实验加力组要强于手术对照组与自然生长组，而手术对照组与自然生长组之间无显著性差异。

Carpesioides is 2n=18=14m+2sm(2SAT)+2st in two populations. The two species under study represent two sections of Nannoglottis s.l. N. gynura, the only species of sect.

狭舌毛冠菊两居群的染色体数目与核型公式为2n=18=14m+2sm+2st(2SAT)；毛冠菊两居群的染色体数目与核型公式为2n=18=14m+2sm(2SAT)+2st。

The reconstruction problem is ill-posed, so two optimal criterions, the least module and the smoothness criterion base on Tikhonov regularization technique, are introduced into reconstruction algorithm. Many regularization parameters choice strategies are investigated, and the TPA(Two—Parameter Algorithm) strategy which is based on the Morozov discrepancy principles, is implemented in two regularization reconstruction algorithms.Numerical experiment results show that the nonnegative and smoothness constraint condition can overcome the difficulty of iteration semiconvergent, preconditioned technique can improve convergence rate and reconstruction accuracy, smoothness regularization criterion can meliorate ill-posed problem of reconstruction and enhance iteration stability, and the TPA is an effective strategy of regularization parameters choice.

数值试验表明：在共轭梯度法中引入非负约束和光滑约束改善了迭代的&半收敛&性，非负约束保证了解的非负性，光滑约束抑制了重建解的振荡现象，约束算法的重建精度与无约束算法相比大幅度提高；在约束共轭梯度重建算法中引入预优技术，可以加快算法的收敛速度，提高迭代的稳定性和重建精度；引入光滑准则的正则化技术可以有效改善图像重建问题的不适定性，加快迭代的收敛速度，提高迭代的稳定性和图像重建质量，计算正则参数的TPA算法在闪光照相图像重建中是有效的。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。