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PQ decomposition method
说明: 进行PQ分解,计算电力系统潮流的有效方法,应用广泛(PQ decomposition is an effective method for calculating power flow in power system.)
- 2019-04-23 21:34:16下载
- 积分:1
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munfan
多姿态,多角度,有不同光照,在MATLAB中求图像纹理特征,抑制载波型差分相位调制。( Much posture, multi-angle, have different light, In the MATLAB image texture feature, Suppressed carrier type differential phase modulation.)
- 2017-02-26 22:48:41下载
- 积分:1
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pan-in77
详细画出了时域和频域的相关图,实现了图像的灰度化并进一步用于视频监视控,小波包分析提取振动信号中的特征频率。( Correlation diagram shown in detail the time domain and frequency domain, Achieve a grayscale image and further control for video surveillance, Wavelet packet analysis to extract vibration signal characteristic frequency.)
- 2017-03-21 19:32:56下载
- 积分:1
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gszz
考虑直齿轮热弹耦合,计算啮合刚度及齿轮摩擦热(To thermoelastic coupling calculation consider spur gear meshing stiffness and gear frictional heat)
- 2020-07-03 11:00:02下载
- 积分:1
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chaos333
混沌理论预测方法,可以进行多步骤预测,方便使用,很用的工具。(chaos a very good sofeward if you have you will find very goog)
- 2012-06-18 20:08:32下载
- 积分:1
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11087 统计逆序对
说明: Description
设a[0…n-1]是一个包含n个数的数组,若在ia[j],则称(i, j)为a数组的一个逆序对(inversion)。
比如 有5个逆序对。请采用类似“合并排序算法”的分治思路以O(nlogn)的效率来实现逆序对的统计。
一个n个元素序列的逆序对个数由三部分构成:
(1)它的左半部分逆序对的个数,(2)加上右半部分逆序对的个数,(3)再加上左半部分元素大于右半部分元素的数量。
其中前两部分(1)和(2)由递归来实现。要保证算法最后效率O(nlogn),第三部分(3)应该如何实现?
此题请勿采用O(n^2)的简单枚举算法来实现。
并思考如下问题:
(1)怎样的数组含有最多的逆序对?最多的又是多少个呢?
(2)插入排序的运行时间和数组中逆序对的个数有关系吗?什么关系?
输入格式
第一行:n,表示接下来要输入n个元素,n不超过10000。
第二行:n个元素序列。
输出格式
逆序对的个数。
输入样例
5
2 3 8 6 1
输出样例
5(Set a[0... N-1] is a n array containing n numbers. If there is a [i] > a [j] i n the case of I < j, then (i, j) is a n inversion pair of a array.
For example, has five reverse pairs. Please use the idea of "merge sorting algorithm" to achieve the statistics of inverse pairs with O (nlogn) efficiency.
The number of inverse pairs of a sequence of n elements consists of three parts:
(1) The number of reverse pairs in the left half, (2) the number of reverse pairs in the right half, (3) the number of elements in the left half is greater than that in the right half.
The first two parts (1) and (2) are implemented by recursion. To ensure the final efficiency of the algorithm O (nlogn), how should the third part (3) be implemented?
Do not use O (n ^ 2) simple enumeration algorithm to solve this problem.)
- 2019-01-07 23:52:06下载
- 积分:1
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PID自动控制电机转速
利用pid算法控制电机转速,转速可调,数码管显示,初学者实用(Using PID algorithm to control motor speed, adjustable speed, digital display, beginners practical)
- 2020-06-22 16:00:01下载
- 积分:1
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Trust-RegionInterior_Point
本代码为《最优化理论与方法》书籍重的信赖域算法的代码,本代码中的目标函数和约束等初值可由需要进行改变,来得到所期望的计算(The code for the " optimization theory and method" heavy books trust region algorithm code, the code of the objective function and constraints may need to change the initial value to get the desired calculation)
- 2013-05-28 17:47:02下载
- 积分:1
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python机器学习预测分析核心算法
python机器学习预测分析核心算法的例程(Python machine learning prediction and analysis of core algorithm routines)
- 2018-08-01 01:34:40下载
- 积分:1
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计算波导中四波混频效率FWMTPAFCA
计算波导中四波混频效率,考虑线性损耗、自由载流子吸收损耗、双光子吸收损耗(FWM efficiency in silicon waveguide)
- 2021-05-08 23:18:35下载
- 积分:1