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abc
行商问题是一个经典的NP完全问题,多人旅行商问题的求解则更具挑战性。以往对求解多人旅行商问题的研究局限于以所有成员路径总和最小为优化标准(Salesmen problem is a classical NP complete problem, many people are solving the traveling salesman problem more challenging. Solving the traveling salesman problem of many previous studies limited to minimize the sum of all the members of the paths to optimize the standard)
- 2011-05-01 15:45:30下载
- 积分:1
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determ
this function used to calculate MATRIX DETERMINANT
- 2012-10-03 22:35:10下载
- 积分:1
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Software
model de turbine eolienne 180kw medel utile pour l utilistion derecte dans les generatrices eoliennes
- 2009-05-17 07:26:37下载
- 积分:1
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renkoumoxing
本文区别于其他传统的人口预测模型,深入分析了当前中国人口的基本情况,以及
最近几年中国人口的发展情况与趋势,针对中国人口基数大、男女比例不协调、乡村人
口城镇化加速、人口老龄化日益严重等显著特点,在各年龄段生育率短期内保持不变的
假设下,建立基本的人口转移回归模型,用于模拟预测短期内中国各类人口数量发展变
化。该模型预测结果显示,中国人口在未来十几年内增长一定幅度后开始下降;与此同
时,人口老龄化、男女比例失调等问题日益严重。该模型短期内的预测效果比较好。
为了使中国将来的人口发展健康、平衡,综合考虑中国以及欧洲一些发达国家和亚
洲一些实行计划生育较早的国家以前以及当前的一些情况,本文提出了修改计划生育政
策的建议。面对日益严重的老龄化现象,我们提出生育率应该参考老龄人口比例这一新
思想,并建立生育率与老龄人口比例的关系模型,用于长期人口的预测。预测结果显示
中国总人口在短期内持续上升,在2025 年到2040 年之间基本保持在14.6 亿的最大值,
然后开始缓慢下降。
两个模型的结果均显示,中国将会面临严重的老龄化和男女比例不协调两个问题。
最后我们提出了适当措施以缓和这两个问题带来的影响。(This is different from other traditional population projection model, in-depth analysis of the current basic situation of China s population, and
In recent years the development of China s population and the trend for China s huge population, gender disharmony, rural people
I accelerated urbanization, the growing aging population and other significant features in the short term fertility of all ages remain unchanged
Assumption, the establishment of basic population transfer regression model, to simulate and predict the short term development of China s various types of population change
Of. The predicted results show that China s population growth in the next decade began to decrease after a certain extent and the same
When an aging population, gender imbalance and other growing problem. The model predicted the short-term results were better.
To make the development of China s future population health, balance, considering China and some developed countries in Europe and A)
- 2010-05-13 11:54:40下载
- 积分:1
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EntropyThresholding
Thresholding is a key techniqur for the segmentation and edge detection. this program contained the matlab program for thresholding on the basis of energy entropy of an image.
- 2013-07-15 03:22:24下载
- 积分:1
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tma_ukf
卡尔曼滤波算法和扩展卡尔曼滤波算法在目标跟踪到的应用(Kalman filter and extended Kalman filter algorithm to the application in target tracking)
- 2011-05-21 18:47:08下载
- 积分:1
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SPAtest
自己写的APS检验matlab源代码。在金融统计中应用非常广泛。共大家参考(Write your own APS test matlab source code. In the financial statistics is widely used. A total of reference)
- 2013-11-11 09:57:26下载
- 积分:1
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MedianFilter
Median filter code using matlab
- 2010-07-29 01:35:08下载
- 积分:1
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temperatre-contour-
利用MATLAB绘制等温线,以湖南省为例,绘制了省界,97县的位置以及等温线。(plot temperature contour through MATLAB.)
- 2013-08-07 11:15:40下载
- 积分:1
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论述了风力发电并网的PLL技术
论述了风力发电并网的PLL技术,基于传统PI-PLL技术基础上,以双同步旋转坐标系建立电网电压不平衡的数学模型。(mbalance of power grid voltage phase lock loop)
- 2020-10-19 09:07:25下载
- 积分:1