Over the past week, Web searches on april fools day jokes and april fools day pranks have more than doubled, and related lookups for easy april fools day pranks and april fools day jokes for work also spiked.

In Scotland, April Fools Day is 48 hours long and you are called an April Gowk, which is another name for a cuckoo bird.

在苏格兰，愚人节要持续2天，被耍的人被称为四月布谷。

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Once, a British short film was shown on April Fools Day about farmers and how they harvest their crop from spaghetti trees!

一次，英国在愚人节那天播出有关农民以及他们如何从意大利面条树上收获庄稼的短片。

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April Fools Day has now developed into an international festival of fun, with different nationalities celebrating the day in a special ways.

现如今，愚人节已经演变成国际性的娱乐节日，不同的国家用不同的方式庆祝它。

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An Approximation Algorithm for Finding the Longest Path in Undirected Connected Graph under Constrains

无向连通图中求约束条件下近似最长路算法

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A Simple Algorithm for Enumerating All the Minimal Cuts of An Undirected Graph

枚举一个无向图所有最小割集的一种简单算法

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Parallel Algorithm for Testing Isomorphism of Undirected Graphs

无向图同构判定的并行算法

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The previous work about community structure of the complex network analysis is mainly concentrated on undirected and unweighted network.

以往社区结构分析的研究主要集中在无向无权网络上，实际网络中，边通常是带有权重和方向的。

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A algorithm for the weighted minisum problem on an undirected network with continuous link demands

需求连续的无向网络上最小距离和问题算法

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A K-Vertex-Connected Augmentation Algorithm for Undirected Weighted Graphs

无向加权图的K点连通扩充算法

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An Algorithm of Seeking All Subgraphs of a Connected Simple Undirected Graph and Its Application

求解连通无向简图的所有连通子图的算法及其应用

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Compare Diameters of Directed and Undirected Double Loop Networks

有向双环网和无向双环网直径规律的对比

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The p-median of an undirected tree problem was studied.

研究了无向树上的p中心问题。

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Then it studies a topology failure location method based on undirected graph to recover IP network from failure.

并在此基础上，研究了一种基于无向图的拓扑故障定位方法，为IP网络的故障排除提供了有力依据。

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Four special capacity expansion problem of undirected network were discussed and the responsible strongly polynomial algorithm was get.

讨论了无向网络容量扩充的4种特殊问题，给出了相应的强多项式算法。

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An Algorithm of Seeking Maximum Clique in Any Undirected Graph and Its Computer Programming

寻求任意无向图的最大团集的一个算法及其程序

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Let G be a simple undirected graph and C be the complement of C.

设G是一个简单无向图，酉麦示G的补图。

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Compared with undirected networks, directed networks contain more structure information including distance information and neighbor information.

与无向网络相比，有向网络既包含网络中节点之间的距离信息又包含节点之间的近邻信息。

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Finding the Most Vital Edge of a Shortest Path in Undirected Networks

无向网络中最短路的最关键边问题

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Further, it could be broken down into two types: directed and undirected.

并且，它还可以分为两种类型：直接的和间接的。

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Evaluation method for terminal-pair reliability in undirected networks with unreliable Nodes

具有不完全可靠节点的无向网络终端对可靠性评价方法

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