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1 Graphs and Trees The following two definitions of a tree are equivalent Definition 1: A tree is an acyclic graph of n vertices that has n-1 edges Definition 2: A tree is a connected graph such that Vu, v E V, there is a unique path connecting u to u. In general, when we want to show the equivalence of two definitions, we must show
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The milks of all mammals contain lipids but the concentration varies widely between species from c. 2% to greater than 50%(Table 3. 1). The principal function of dietary lipids is to serve as a source of energy for the neonate and the fat content in milk largely reflects the energy requirements of the species, e.g. land animals indigenous to cold environments and marine
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一、重要不等式 设非负r:vX的期望E(X)存在,则对于任意实数>0
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Computer technologies have been changing the environment of engineering design-enabling MDO Hardware: Advances in processor speed, memory and storage Software: Powerful disciplinary analysis and simulation programs(e.g. Nastran, Fluent...)
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Temporal Planning in Space Brian C. Williams 16.412J/6.834J based on \Handling Time: February 23rd, 2004 Constraint-based Interval Planning,\ by David E. Smith Outline Operational Planning for the Mars Exploration Rovers
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Vision-based SLAM Mobile Robot Localization And Mapping With Uncertainty using Scale-Invariant Visual Landmarks -e,lowe, Little Vikash Mansinghka Spren Riisgaard Outline
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1.在盛水的鼓泡吸收器中通入纯CO2气,经长期接触后测得水中CO2的平衡溶解度为 2.857×102mol/L溶液。 鼓泡器中的总压为101.3kPa,水温30℃,溶液的密度pm=996kg/m3求亨利系数,并将此实验值与文献值E=188.5MPa 作比较
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可测函数 一、可测集E上的连续函数定为可测函数 二、简单函数是可测函数 三、可测函数总可表示成一列简单函数的极限 (当可测函数有界时,可作到一致收敛)
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二维随机向量及其分布函数 设随机试验E的样本空间是Ω. X=X(a)和Y=Y()是定义在Ω上的随机变 量,由它们构成的向量(X,Y),称为二维随机向 量. 二维随机向量(X,Y)的性质不仅与X及 Y的性质有关,而且还依赖于X和Y的相互关系, 因此必须把(X,Y)作为一个整体加以研究. 为此,首先需要引入二维随机向量(X,Y) 的分布函数的概念
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测1.1如图所示的平板拉伸试样受轴向力F作用,试样上如图a粘贴两片应变片R、R2, 其应变值分别为1、E2由R1、R2组成图b所示的半桥测量电路,这时应变仪读数为
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