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The following results are made from this research: Assessing data quality and band combination of different bands in line with geo-target features in desertification areas, and determining basic bands for desertification monitoring. And understanding and studying the spectral features and variation rules of geo-targets in the experimental area, raising that it is the basis of geo-targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo-targets, realizing that in a great extent spectral-integrated-form-based classification method can remove the phenomenon of "different spectrum with same objects" resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo-target with similar spectral forms and much different values of whole reflectionratio. It is suggested that "red edge" range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel-based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. The remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed.

研究结果如下:首先针对荒漠化地区的地物特征,对高光谱数据不同波段的数据质量、波段组合进行了评价,提出了适用于荒漠化监测的基本波段选择集;初步了解和掌握了研究地区的地物光谱特性及变异规律,进一步明确了掌握地物光谱特征和变异规律是用成像光谱仪数据提取地物信息的基础;发现了基于光谱整体形状的分类方法在很大程度上能够消除由于传感器、地物目标观测方向之间的角度变化引起的反射率曲线整体平移的"同物异谱"现象,对于谱形相似而整体反射率的值相差较大的两类地物,通过引入均值和方差图像参与分类得到解决;研究还表明在植被"红边"范围内的波段是进行荒漠化监测的主要特征波段,这些波段与植被生物量和盖度都有密切的关系,是开展精细植被分类研究和植被定量反演的重要基础;像元的导数光谱分析可以消除土壤背景的影响,是进行植被生物量和盖度定量反演的有力工具;建立了荒漠化监测主要评价因子的定量反演模型,并分析了模型的适用性。

On the base of other researcher, the *** from the basic equations of stable current field to derived the expressions of boundary problems under 3-D condition. Without considering the EM effect and using the generalized variation principle, we can get the corresponding variation equation. Thronging subdivide the 3-D model, interpolation, analysis, and general synthesis with the triangular prism element, we can carry out the simulation on frequency-domain IP\'s parameters under level and undulate topography.

在前人工作的基础上,在忽略电磁效应的情况下,从稳定电流场的基本方程出发,推导了三维区域满足的边值题目,用广义变分原理得到相应的变分题目,通过用三棱柱单元对大地模型进行剖分、插值、总体集成,最后解方程,得到每个节点上的复电位值,最后实现了水平和起伏地形等条件下的激电参数的数值模拟。2。

Culm sheaths gradually deciduous to persistent, triangularly narrowly rounded, leathery, longitudinal ribs obscure, densely yellow-brown setose, margins yellow-brown setose; auricles absent; oral setae few, yellow-brown, 1–5 mm, slender; ligule truncate or convex, 1–2 mm, initially ciliate; blade reflexed or erect, linear-lanceolate, glabrous, margins smooth.

对持久,三角形逐渐脱落勉强绕行的竿箨,偏僻的似皮革,长度肋骨,具刚毛的黄褐色的浓密,具刚毛的空白边黄褐色;叶耳无;口头的刚毛少数,黄褐色,1-5毫米,纤细;叶舌截断或者凸,1-2毫米,最初纤毛;叶片反折的或直立,线状披针形,无毛,边缘平滑。

By method of finite element calculation,parameter analysis of suspension bridge with steel truss girder are carried out.

本文基于有限元计算,探讨了主缆边中跨比、主缆垂跨比、加劲梁恒载大小以及中央扣等设计参数对钢桁梁悬索桥力学性能的影响,分析总结了上述设计参数与钢桁梁悬索桥强度和刚度的关系。

22 So Abner spoke again to Asahel, Turn aside from following me!

2:22 于是押尼珥再次对亚撒黑说:从跟追中转边!

Adopting discrete time-domain method to set up the mathematical model of high-voltage conversion circuit, and analyzing the influence of frequency, duty cycle, primary inductance, different turns ratio parameters how to affect high-voltage convertion circuit charging time.

采用离散时域方法建立高压转换电路数学模型,分析了高压转换电路频率、占空比、原边电感量以及匝比等设计参数对高压转换电路充电时间的影响,并进行了仿真和实验验证。

It is found that,through sliding zone soil mineral component and water-soil interaction analysis,the principle reason of landslide is that coal measure strata turves soil contains certain proportional hydrophilic mineral ,and its mechanical index will fall greatly after water-soil interaction.

以京珠高速粤境北段k18+170~k18+225滑坡为例,研究了煤系地层滑坡机理,通过对滑动带土的矿物组成及其物理力学性质分析,发现该类边坡滑坡的主要原因是煤系地层中的泥炭土含有一定比例的亲水矿物,在水的作用下力学性质发生大幅度降低。

Institute of Power and Electronic Technology, Naval University of EngineeringAbstract : Due to the existence of long unexcited primary between the import and export of linear induction motor with multi-segment primary, the static longitudinal end effect are different comparing with conventional LIM.

多段初级直线感应电动机(linear induction motor,LIM)由于在通电初级绕组外还存在较长的不通电初级铁心,因此这种结构的直线感应电动机的磁场边界条件与传统直线感应电动机不同,静态纵向边端效应对电机性能的影响也存在较大差异。

If you watch the news or read the papers,which of course you don't because the Judge said not to, but if you did, you would see the undeniable delicious joy of the media and the public over Kelly Nolan's plight. I have no doubt that you want Kelly Nolan to be punished.She married for money, she had an affair, she carried on naked in the pool with her boyfriend. She's cold,materialistic, unlikable, and it might bring you all pleasure to see her go to jail. But as for evidence to establish that she committed a murder beyond all reasonable doubt? It just isn't there.

媒体大众对凯丽·诺兰的处境有着一种难以抗拒的快感,我不怀疑你们想要凯丽·诺兰受到惩罚,她为钱结婚,她有婚外情,她赤身裸体地和男友在泳池边嬉闹,她冷酷、无情、不讨人喜欢,看着她进监狱也许会让你们所有人深感愉快,但是作为判处她谋杀罪名成立的证据,能够排除所有合理怀疑的证据,就是不存在。

The thesis also applies FE sub-model and numerical optimization design techniques to conduct the cross-section configuration optimization for the wings joint of some unpiloted air vehicle project, with the light weight objective and the balance of pin-load distribution at each row screws, which lays an excellent design foundation for reducing the around-hole stress concentration and its life improvement.

论文还应用子模型法对某无人机机翼前后段连接接头的截面构形进行了优化,使各列铆钉上的钉载趋于均匀,为降低紧固件孔边应力集中奠定了设计分析基础。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力