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A new non-linear quadratic programming Bayesian prestack three-terms inversion method is developed; Firstly, this method is based on Bayesian parameter estimation theory, Gaussian distribution is used for likelihood function and modified Cauchy distribution is used for prior distribution; Secondly, covariance matrix is used to describe the degree of correlation between the parameters; rock physics relations are used to constrain the inversion results; at last, this method is transformed into non-linear quadratic programming problem, and inversion results are acquired under several constraints.

本文提出了一种基于非线性二次规划的叠前三参数反演方法。首先基于贝叶斯参数估计理论,假设似然函数服从高斯分布,并使待反演的参数服从于改进的Cauchy分布,从而提高了反演结果的分辨率;其次用协方差矩阵来描述参数间的相关程度,进一步提高了反演结果的稳定性;最后将问题转化为一个非线性二次规划的求解问题,并在多种约束下得到问题的解。

The size and localization of oil cells in the leaves, combined with the thickness of leaves, the number of layer of palisade tissue, the ratio of the thickness of palisade tissue to that of spongy tissue, the hypoderm, and the type of hairs, may be used as the identification characteristics of the generas, and even species.

木兰科植物油细胞的分布及其大小与叶厚、栅栏组织层数、栅栏组织与海绵组织厚度间的比值以及下皮层的有无、表皮毛的类型、叶脉的结构等特征相结合,可作为该科中属、甚至种的鉴别特征。

The synthesis scheme we developed can deal with changes in visibility, produce perspectively correct views and handle the distortion around the circumferences in the synthesized views. In our scheme, the area without corresponding points was first determined by using Fourier transformation in order to deal with distortion problem, within the mutual overlapped area the z-buffer values of matched key points were computed so that the visibility in novel views can be handle correctly, lastly the common points in new views are rendered through epipolar geometry constraint.

算法的步骤为:利用傅立叶变换方法确定相邻源图像无对应点的区域;然后,利用尺度空间和相位一致原理在共同区域提取及匹配边缘上的关键点,计算其深度值,并在新图像中由该值判别虚拟图像中的可见性;再由关键点恢复极线约束,通过极线间的位置和颜色插值生成虚拟图像中有对应区域的一般点;在确定极线位于无对应点区域段后,利用加权平均或放大插值的方法实现了源图像无对应点区域在虚拟图像中的自然过渡。

With strain, elevating a candlestick: with pain, feeling on his right temple a contused tumescence: with attention, focussing his gaze on a large dull passive and a slender bright active: with solicitation, bending and downturning the upturned rugfringe: with amusement, remembering Dr Malachi Mulligan's scheme of colour containing the gradation of green: with pleasure, repeating the words and antecedent act and perceiving through various channels of internal sensibility the consequent and concomitant tepid pleasant diffusion of gradual discolouration.

420他心情紧张地举着烛台,感到疼痛伸手摸了摸肿胀起来的右颞叶撞伤处。他全神贯注地凝视着那庞大笨重被动的和那细溜活泼主动的,又殷勤地弯下身去,把掀起来的地毯边儿舒展成原样。他兴致勃勃地记起玛拉基。穆利根博士的色彩计划,其中包括深浅有致的绿色。他又心怀喜悦之情重复着当时相互间的话语和动作,并通过内部种种感官,领悟着逐渐褪色所导致的温吞快感的舒散。

The short shoot differentiation came from the lateral buds among the bud scales, in the initial stage, the lateral buds elongating, and then differentiating two "anisomerous"(one was small, the other was big) needle primordia in the elongating courses; the big one differentiating once more, and formed three needle primordia.

短枝的发育来源于长枝上芽鳞间的侧芽,在发育的初期,侧芽进行伸长生长,在伸长生长的过程中首先分化出一大一小&不对称&的两个针叶原基,大的叶原基进一步分化,形成三个针叶原基。

Objective To study the protective action of compound agent madeup with effective ingredients of Hirudo and Rhizoma chuanxiong and Folium Ginkgo in animal ischemic cerebral infarction.Methods To mix Hirudin extracts of Folium Ginkgo and Ligustrazine according2:25:5into asepsis injection,rats local cereˉbral ischemia induced by embolism of middle cerebral arterywas used as experimental model to study the efˉfects of the compound agent and positive control drug,Nimodipine and extracts of Folium Ginkgo on cerebral infarct size and neurological deficits.Disposing the experimental data with statisticsand comparing their otherness among difˉferent groups.

目的 探讨用中药水蛭、银杏、川芎的有效成分组成的复方制剂对动物局灶脑缺血的保护作用方法将水蛭素、银杏叶提取物、川芎嗪按2∶25∶5的比例制成无菌注射液,应用鼠大脑中动脉栓塞导致缺血性脑卒中的实验模型,并用生理盐水、尼莫地平和银杏提取物作对照,观察不同药物对脑缺血面积和由缺血造成的大鼠行为障碍的影响,将实验据用统计学处理并进行组间的差异性比较。

Follicles with ca. 20 prominent papery wings, glabrous; interpetiolar line conspicuous, lobed; inflorescences normally paired at nodes, conical with well-defined main rachis, lax, top pointed; cymules forked

约的蓇葖果具20个突出的纸质的翅膀,无毛;叶柄间的线显眼,有叶;花序通常配对在节上,圆锥状的具明确的主轴,疏松,顶尖;小聚伞花序分岔 4 Myriopteron 翅果藤属

The critical nitrogen content in heading period was used to calculate the biggest accumulation quantity of nitrogen. The latent distribution index of leaf and stem, which was the variety heredity parameter, were used to distinguish the difference in nitrogen assignment in different varieties. The dynamic content of the nitrogen accumulation before anthesis could be described with a Richards model. The dynamic content of the nitrogen remobilization in leaf with leaf area index could be described with a power model, and the nitrogen absorption of grain from soil with dry weight could be described with a power model. The dynamic content of nitrogen density in stem and spike with physiological development time could be described with a nonlinear model.

模型利用抽穗期植株临界含氮量来表达氮素最大积累量,引入叶片潜在分配指数和茎鞘潜在分配指数2个品种遗传参数来区别不同品种在器官间的氮素分配差异,采用Richards方程来描述大麦花前氮素积累动态变化;采用指数函数方程来描述叶片氮的转移量随叶面积指数的动态变化以及籽粒从土壤中吸收的氮量随干物重的动态变化;采用非线性函数方程描述茎鞘和穗部的氮浓度随生理发育时间的动态变化。

Through the statistic and observation of the histological cycling on skin and hair follicle regarding Inner Mongolia Arbas and Liaoning cashmere goats as matierial, the cycling is the same between the two kinds of goats. The reconstruction of the hair follicle is from the connection of the epithelial and mesenchymal. In this period, the secondary hair follicle appears as groups, and the thickness of the epidermis of skin also is different, the high peaks of each characteristics of secondary hair follicle fall behind of the primary hair follicle for a month mostly.

通过对内蒙古阿尔巴斯绒山羊和辽宁绒山羊皮肤毛囊形态结构周期性变化的统计观察表明,二者周期性变化基本相同;初次级毛囊形态结构的周期性变化也基本相似,但周期并不相同;毛囊的重建是从上皮细胞与间叶细胞的连接开始的,次级毛囊在重建过程中是成群出现的,皮肤表皮的厚度也呈周期性变化,次级毛囊各性状的高峰大都落后初级毛囊一月。

DNA C-value is of practical value in the forecast of the invasiveness of exotic species. However, such predictions must be made with comparisons within families because the DNA C-values vary greatly between woody and herbaceous species, between monocots and dicots, between annuals and perennials, and especially among families.

DNA C-值在预测外来物种的入侵性方面具有一定的应用价值,但是,由于在木本植物和草本植物之间、单子叶与双子叶植物之间、一年生和多年生植物之间,特别是在不同的科之间,植物的DNA C-值较明显的差异,因此,根据DNA C-值预测外来物种的入侵性,应该严格地限于同一科内的相关物种间的比较。

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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