Recall from lecture 22 °Flow value:f=f(s,V) Cut: Any partition (S, T)of y such that s E S andt∈T Lemma. f=f(s, T) for any cut(S, T) Corollary. f(s, T) for any cut(S, T) Residual graph: The graph G=(v, ef) with strictly positive residual capacities c u, v) c(u,)-f(2y)>0

Negative-weight cycles Recall: If a graph G=(V, E) contains a negative weight cycle then some shortest paths may not exist

Balanced search trees Balanced search tree a search-tree data structure for which a height of o(g n)is guaranteed when implementing a dynamic set of n items

How fast can we sort? All the sorting algorithms we have seen so far are comparison sorts: only use comparisons to determine the relative order of elements E. g, insertion sort, merge sort, quicksort heapsort The best worst-case running time that weve seen for comparison sorting is O(nIgn) Is o(nlgn) the best we can do?

EROSPACE DYNAMiCS EXAMPLE: GWE ACCELERATIoN of THE TIP 0F认ERU0毛R人TM5Hc人AF LDk小 G For A650LUT # CCELER升T10 N UTH RES/∈ct T0wE工NERT1 AL FRAME (∈ TH IN THiS CASE) 0EFNE兵8uNcH0 f PoINTS

EROSPACE DYNAMiCS EXAMPLE: GWE ACCELERATIoN of THE TIP 0F认ERU0毛R人TM5Hc人AF LDk小 G For A650LUT # CCELER升T10 N UTH RES/∈ct T0wE工NERT1 AL FRAME (∈ TH IN THiS CASE) 0EFNE兵8uNcH0 f PoINTS

一、后备种公猪的管理 1、后备公猪: 8月龄、120G开始使用

These notes introduce some ideas for modeling markets with adverse selec- tion. This framework was originally intended to deal with markets that cannot be easily accommodated by the standard signaling game e. g, be- cause there is two-sided adverse selection. For present purposes, however, it is enough to deal with the simplest case in which there is adverse selection

reward l. reward sb. with sth.用某物报答酬谢/奖励某人 2. reward sb. for sth.因某事而报答酬谢奖励某人 3 rewarding adj. helpful有益的;值得做的e.g. Make the extra effort to impress theinterviewers and you will be likely to berewarded with a better job with a bettersalary.如果你能多花些心思,给面试的考官留下深刻的印象,那么你就可能得到一个比较好的、工资也很高的工作。次大注意区分与 award之间的不同

索引 阶梯”地形( Terrace) 贝叶斯判别分析 3S ( GIS.RS GPS 被动遥感( Passive Remote sensing) 9交模型(g- Intersection Model,9-IM)