可行区域

In this thesis, the case study of K Company\'s practice reveals that freight distribution within a relative small region can reach to an optimal point by creating frontier freight distribution center and taking advantage of abundant labor resources as well as modern logistics techniques.

本文主要通过K公司的实践，通过设置前线物流分拨中心，尽可能利用我国丰富的人力资源，结合可行的现代物流技术，达到小区域局部配送最优；同时，利用小步改进，效果累积的策略，达到整体长期最优，最终展示了一种低成本，运营效果却能满足和促进企业发展需求的快速消费品同城配送方案。

The feasible area for this kind of programming changes into boundary, and there is no interior point.

当规划问题为混合约束时，可行域变成一个边界区域，并没有内点。

However, due to the diversity in the Asia, at the present stage, the most practicable way for this area is to collaborate from bilaterally to multilaterally, from small area to sub-region. As conditions become mature, the co-operation among the larger area or the whole Asian will be achieved.

但亚洲的多样化特点决定了在现阶段，本地区最为可行的选择是由双边合作到多边合作，由小区域合作过渡到次区域合作，待条件成熟后，再达到整个亚洲地区经济合作的更高境界。

A framework is proposed for modeling spatial distribution of population density. The study region is divided into fine grids. Kernel estimation is used to break down count data published for one fixed set of irregular areal units to the grids where the population is uniformly distributed. The spatial continuous surface which reflects a truer p...

将研究区域划分为一定分辨率的格网，用核心估计方法将人口密度估计值分配到每个格网上，每个格网上的人口是均匀分布的，随着格网分辨率的提高，就可以模拟出符合人口详细分布的人口密度空间连续分布模型，并通过实验说明该方法是可行的。

In the paper, we discuss and calculate the decoupling problem of two arca power system load frequency control. The results show that the proposed ap...

文中以两区域互联电力系统负荷频率控制为例进行了讨论和计算，其结果表明本文方法是可行和有效的。

It shows through the calculation of topographic shaping of typical regions and channel shaping of the river system of the middle Yellow River and preliminary analysis on interrelationship with gravity erosion that it is feasible to reflect the integrated factor of topography and geomorphy...

对黄河中游典型区域地形分形和河网沟道分形的计算及其与重力侵蚀相互关系的初步分析表明：通过分形来反映流域地形地貌综合因素是可行的；地形分形与重力侵蚀的关系较为紧密，可以用于重力侵蚀的宏观预测；河网分形与重力侵蚀的关系较弱。

Estimating plexus depth, or "depth gauging," in the infraclavicular region is achievable and is a potentially useful strategy.

在锁骨下区域估计臂丛深度或&测量深度&是可行的，而且有应用潜能。

Restoring natural areas to presettlement conditions should not be done if it means utting down mature trees.

如果恢复自然区域会砍伐熟龄树木就不可行

When a local area in a system or a large scale system consists of many fradctionalizing system which are interrelated. synthesizing of the overall ideal solution is a synthetical decision question of multi-objective and multi-stage after the feasible solution subspace of every fractionalizing system has beed resolved.

若某一系统或大系统中的局部区域是多个相互关联的分系统组成时；在求得各分系统可行解子空间后，系统全局理想解的合成就是一个多目标多阶段的综合决策问题。

The main research tasks and results are as follows:(1) Through comparing the stress intensity factor of compact tension specimen calculated by finite element software with the theoretical value, the feasibility of calculating fracture parameters of crack tip in ABAQUS software was verified.(2) The relationship between the elastic modulus of the material and research scale was studied based on deriving the cohesive stress theory and other relevant theories. And the elastic modulus of the material on meso-scale was determined.(3) Global model and sub-model of the finite element were built in th...e macro-scale, and stress-strain field nearby the crack tip was analyzed, and the results show that the detailed stress-strain in the crack tip could be obtained by using the sub-model technique.(4) In meso-scale, the crack growth model was also established by assuming the crack propagating along the grain boundary, and the detailed stress-strain field in the crack tip was obtained.(5) The effect of crack length on Von Mises stress, and maximum principal stress and strain was analyzed in meso-scale when equivalent KI equals 30MPa.m1/2. And the results show that except for crack tip area, the stress-strain distribution in whole specimen is not affected.

主要完成研究内容和取得成果如下：(1)利用有限元软件计算出紧凑拉伸试样的裂纹尖端应力强度因子KI值，其结果与理论值一致，从而验证了利用ABAQUS计算裂纹尖端相关断裂参量的可行性；(2)在研究内聚应力等相关理论的基础上，推导出了研究尺度与材料弹性模量的近似关系，并确定了介观尺度上的弹性模量；(3)在宏观尺度上建立了全局有限元计算模型和子模型，得到了裂纹尖端应力应变场分布，结果表明利用子模型技术获得比较准确的裂纹尖端应力应变场分布是可行的；(4)在介观尺度上利用平均晶粒尺度的方式建立了裂纹沿晶扩展模型，得到了裂纹尖端断裂过程区的微观应力应变场；(5)当应力强度因子为30MPa.m1/2时，分析了介观尺度上在裂纹沿晶扩展过程中裂纹长度对Mises应力、最大主应力和应变的影响，结果表明，裂纹扩展长度对试样整体应力应变分布影响不大，而对裂纹尖端区域有较大影响；(6)介。。。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。