查询词典 derive...from

We derive knowledge not only from books, but also from practice.

我们的知识不但来源于书本，还来源于实践。

Chapter 1 gives the background,current research process of relatedproblems and summarizes this thesis\'s work.In chapter 2,we study the Brownian motion with holding and jumping on the boundary.We use the resolvent method to obtain the infinitesimal generator because the domain of the infinitesimal generator is essentially the same as the range of the resolvent.Knowledge of this range and of the differential operator determines uniquely the infinitesimal generator.Since the semigroup generated by the DHJ is not strongly continuous,to use the nice property of strongly continuous semigroup in analytic theory,in chapter 3 we show that the dual is strongly continuous and derive ergodicity through spectral radius formulas and finally obtain the ergodic theorem by duality. In chapter 4,we discuss a class of a more general process---one dimensional Feller diffusion proposed by W.Feller in 1954.The Feller diffusion allows the possibility of jumps from boundary to boundary,not only from boundary to the interior.We give the stationary distribution of this process.

具体地，本文的结构如下：第一章给出了问题产生的背景，研究现状及本文的主要工作；第二章研究了在边界上逗留后随机跳的布朗运动，我(来源：3dABC论文网www.abclunwen.com)们用预解算子的方法得到其无穷小生成元，因为无穷小生成元的定义域本质上就是预解算子的值域，知道这个值域和微分算子形式就能唯一地决定无穷小生成元；由于DHJ过程产生的半群不是强连续的，为利用强连续半群的一些漂亮性质，在第三章中我们证明其对偶半群是强连续的，然后由谱半径公式得到遍历性并且最后由对偶得到遍历定理；第四章讨论了Feller在1954年引入的更广的一类过程----一维Feller扩散过程，Feller扩散过程允许有从边界到边界的跳发生，即不仅仅局限于从边界到内部的跳，在这一章中，我们给出了一维Feller扩散过程的平稳分布；在第五章，我们讨论了一些相关的问题，给出了DHJ过程对应的PDE问题及特征值与收敛速度的关系。

At last, to summrize the above research results, the paper from three aspects just like market construction, administration of government and enterprises provided some advises including relaxing politics of government, strengthing financial derive market and encouraging enterprises to use derive tools in order to hedge risks during the operation process.

最后，本论文在总结前两部分的研究结果的基础上，有针对性地从政府政策、市场建设以及企业角度提出了放宽政府政策，加强金融衍生品市场建设，鼓励企业运用金融衍生产品进行风险管理等政策建议。

Under the heterogeneously exponential setup,we obtain the equivalent characterization in terms of parameters for the stochastic order between the sample range from nonidentical independent exponential observations and that from i.i.d,exponential ones;also,we derive the characterization for the likelihood ratio order between the second order statistics from heterogeneous exponential random variables.

在这种设置下，样本极差X_-X_(1，n)和Y_-Y_(1，n)之间的通常随机序可以用其参数的不等式来等价刻画。另外，我们也建立了第二顺序统计量X_(2，n)和Y_(2，n)之间的似然比序的等价刻画。

In the last years of the ancien régime, before the French Revolution, the old nobility, intent on keeping its privileges, had pushed for restrictions of certain offices and orders of chivalry to noblemen who could demonstrate that their family had enough "noble quarterings"(in French,'quartiers de noblesse'), a reference to a noble's ability to display armorially their descents from armigerous noble forebears in each of their lines of descent to demonstrate that they were descended from old noble families, who bore arms that could be quartered with their own male line arms, and thus prove that they did not derive merely from bourgeois families recently elevated to noble rank.

法国大革命前最后几年的复辟中，旧贵族试图捍卫他们的特权，他们推动特定部门的限令，在能证明自家具有足够贵族&quartiers&(法语'quartiers de noblesse')的人中间宣扬骑士精神。

Based on the previous results, the method to derive creep constructive model from the indoor experiment data is studied, and these study works are also finished: the reasonable method to determine instance elasto-plastic deformation according to experiment curve, the optimization method to perform curve fitting based on experiment data, the universal method to derive creep constructive model from experiment results.

4在已有研究成果的基础上，对从室内试验数据成果导出流变本构模型的方法进行探讨，研究从室内流变试验曲线上确定瞬时弹塑性变形的合理方法，以及对流变试验数据进行曲线拟合的最优化方法，探讨由室内试验数据成果导出流变本构模型的一般性方法。

Some men are perfectionists because of the personal satisfaction they derive from attention to detail.

源于对细节关注的个人满足，一些男人成了完美主义者。

Further, how do the subcultures which derive from the Internet work on the real life?

更进一步的问题则是，源自网路的次文化又如何影响真实的生活情境？

The crucial indirect benefits for developing countries derive from the impact of an oil price decl on the industrial countries.

发展 中国家主要的间接得益来自石油跌价对工业国的冲击。

It may be concluded that the variation in mtDNA D-Loop of Spanish mackerel is relatively rich. The 20 individuals can be divided into two branches according to clustering indicating that this population may derive from two different maternal ancestors.

研究结果表明，该蓝点马鲛群体的遗传多样性较为丰富，20个个体通过聚类形成两大分支，表明该群体可能来源于2个不同的母系祖先。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。