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Based on the spatial temporal characteristics of interaction of pine caterpillar larvae population,a three dimensional correlogram and spatially mixture regression model was proposed.

对马尾松毛虫幼虫密度分布的预测采用了时空自回归加时空趋势面的形式,预测的马尾松毛虫幼虫的平均密度和实测的平均密度在时空变化的趋势上是完全一致的,而且预测结果给出了马尾松毛虫幼虫密度分布的图象形式,给防治决策提供了方便。

The influences of the shock thickness and Alfven waves on the particle acceleration by diffusive shock waves are numerically studied through solving one-dimensional diffusive equation including the second-order Fermi effect. It is shown that the spectral index of the energetic particles strongly depends on the shock thickness. For example, the spectral index increases from 2.1 to 3.7 in the low energy range of 3-10 MeV and from 2.5 to 5.0 in the high energy range of 20-60 MeV as the thickness increases. The spectral index decreases from 4.3 to 3.1 as the particle injection energy increases. The spectral index decreases from 4.0 to 1.8 at the quasi-steady stage with the enhancement of the compression ratio from 2 to 4. The results indicate that under the influence of Alfven waves, the energetic particle spectrum at lower energy becomes flat and the spectral index decreases from 2.5 to 0.6 in the low energy range of 3-10 MeV and from 11.6 to 5.0 in the high energy range of 20-60 MeV. At the same time, the rollover energy reaches 19.6 MeV. The spectral index decreases from 5.8 to 2.9 as the energy density of Alfven waves increase. All these results are basically consistent with the theoretical models, as well as the observations of typical energetic particle events.

通过数值求解包含二阶费米加速的一维扩散方程,探讨在准平行激波条件下激波厚度和级联阿尔芬波对粒子加速的影响,研究粒子分布函数的演化与激波厚度和阿尔芬波强度的内禀关系,计算结果表明:(1)考虑激波厚度时,谱指数明显依赖于激波厚度,随着厚度从0.32增大到2.56,低能端(3-10MeV)谱指数逐渐从2.1增加到3.7,高能端(20-60MeV)谱指数从2.4增大到5.0,能谱逐渐变软;当初始注入粒子动量增大1.3倍,质子能谱指数从4.3减小到3.1,且与零厚度激波加速的谱指数差值缩小;厚度不变时,随着压缩比从2增加到4,准稳态分布时低能端(3-10MeV)粒子能谱指数逐渐从4.0减小到1.8谱变硬;(2)在级联阿尔芬波的影响下,随着时间的增大,粒子在低能处(3-10MeV)的谱指数从2.5减小到0.6高能端(20-60MeV)谱指数从11.6减小到5.0,能谱变硬,拐点能量值从7.5MeV增大到为19.6MeV;随着波的能量密度增大,谱指数从5.8减小到2.9,这表明阿尔芬波强度越大,加速效率越高,通过与激波厚度解析结果和高能粒子事件的观测能谱比较发现两者是一致的,说明数值模拟结果是可靠的。

The research of both theories and practices of gridding in the dissertation shows that: Linear interpolation based on triangulation is simple computationally and fast, but its gridding results isn't smooth and its precision is low; Multiquardric method is also simple computationally with high precision and good effect, but its gridding is slow because it is based on global calculation; Minimum curvature method is fast with high precision and good effect, but its gridding quickly degrades over areas with sparse data control when grid spacing smaller than the actual grid spacing is used; Ordinary Kriging method is high-precision, but its gridding is slow because of large calculation; Inverse interpolation is a computationally fast, efficient and robust method with high accuracy and perfect effect, and its gridding results of different gridding orientations are basically identical. Inverse interpolation is suitable for thegridding of geophysical irregular data, especially for large-scale geophysical irregular data.

本文的方法研究和数据试验分析表明:基于三角网的线性插值法计算简单,速度快,但其网格化结果不光滑,精度不够;多元二次函数法计算简单,网格化精度高,效果良好,但它是基于全局计算的,计算速度较慢;最小曲率法计算速度快,网格化精度高,效果良好,但其在稀疏控制点的网格化容易出现振荡现象;普通克里格法网格化精度高,效果良好,但其计算量较大,一般计算速度慢;反插值法网格化计算稳定,速度快,精度高,效果好,而且在网格化方向不同的情况下其网格化精度效果都达到基本一致,适合于地球物理不规则分布数据的网格化,特别是大规模地球物理不规则分布数据的网格化。

However, a more widespread type of relationship is one which has a correspondence between the distribution limits of a species and an isotherm.

然而, 种的分布限与等温线间相一致,是一种更广泛分布的相关类型。

The freshwater ichthyofaunas mainly from northern China are characterized by primitive actinopterygians,and they are closest to those from Siberia and Middle Asia,and also contain some forms similar to the fishes from other regions of Laurasia and the Gondwanan continents.

与当时"南海北陆"的古地理格局一致,淡水鱼类主要分布于北方大陆的河湖相盆地,但也见于扬子板块与北方大陆碰撞后的四川盆地;海生鱼类则主要分布于华南和喜马拉雅地区。

The results show that the temperature change of the heat exchanger is consistent with flow pattern and the maldistribution is more and more severe with the increase of Re velues.

实验结果表明随着Re的增大,换热器出口温度分布与流量分配趋势相一致,会越来越不均匀;较大的传热温差也会增加温度分布的不均匀性。

Based on the results of morphology taxonomy and themain distribution regions of Lepidium in China, these resuls that the ideal regions forintroduction mainly lay in the northeast and north of China by GRGs were basically IIconsistent with the main native distribution regions of fifteen plants of Lepidium in China.Especially the native distribution regions of L.sativum that had the nearest kinships withMaca by morphology taxonomy were totally layouted as the ideal regions for introduction.

通过灰色关联度分析所得的适宜引种区和较适宜引种区主要分布在东北、华北地区的结果与 15 种独行菜植物在中国的主要分布区基本一致,尤其是与玛咖相似性非常接近的家独行菜,它的分布地区皆被划分为玛咖的适宜引种区。

Which may be useful in the study of insulin signaling transduction pathway in the brain.methods:use immunohistochemical techniques to investigate the neuronal distribution of insr、irs-1 and irs-2 proteins in rat brain with polyclonal insr、irs-1 and irs-2 antiserum.results:insr、irs-1 and irs-2 are widely distributed in the brain of normal adult rat ,especially in the cerebral cortex 、hippocampus and numerous hypothalamic nuclei including the arcuate nucleus、ventromedial nucleus and paraventricular nucleus which are crucial for the control of food intake.conclusion:insr、irs-1 and irs-2 are widely distributed in the brain of normal adult rat, suggesting that they may play an important role in the normal function of central nervous system.

应用免疫组织化学染色的方法观察正常成年大鼠脑中insr、irs-1、irs-2的分布。结果:insr、irs-1、irs-2在正常成年大鼠脑中广泛分布,在与学习记忆和能量代谢相关的脑区如大脑皮质、海马、丘脑和下丘脑的部分核团均有表达。结论:insr及irs-1、irs-2在正常成年大鼠脑中广泛表达,但表达部位不完全一致,提示它们在大鼠中枢神经系统的正常功能活动中可能发挥不同的作用。

Results Under the condition of the conjugate prior distribution, the prior parameters computed by three methods were similar.

结果在共轭先验分布的条件下,先验矩、分位数、众数与分位数三种方法确定的先验分布参数结果一致。

The result of probability distribution in the paper is consistent with outcome of Hypothesis test, so verify the assumption of PERT technology is objective.

本文求解出的概率分布结果与数理统计中假设检验的求证结果一致,从而验证了PERT技术的概率分布假定是符合客观实际的。

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On closer examination, though, this is not a vote for multilateralism but just the opposite.

仔细审视后我们发现,这并非是对多边主义投出的赞成票,而是恰好相反。

Uncovering their weak spots, so I can defeat them.

揭露出他们的弱点,这样我就可以打败他们了。

Methyl bromides, in C_(3v) symmetry, have been extensively studied at their first absorption A-band because the behavior of these molecules can be used as a prototype for depicting numerous types of photodissociations in a variety of polyatomic molecules.

例如,有很多研究报道了C_(3v)对称的溴甲烷等分子在第一吸收带的光解,这是因为其光解行为可以作为理解其它多原子分光解的原型。