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chap3
It is Radar System design and signal prcessing code based on standard algorithm .this is vey important for biggener those who are working on Radar signal processing area.This code contain various chapter. this is basically chapter No3
- 2009-11-02 14:25:06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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pso-step
标准全局版粒子群算法的单步更新位置速度的功能(Single-step to update the position, velocity function of the standard global version of particle swarm optimization)
- 2012-04-15 22:19:23下载
- 积分:1
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svpwm1
说明: 一个闭环的SVPWM控制,可以稳定控制电机作为毕业设计用(A closed loop of the SVPWM control, stability control motor can be used as a graduation project)
- 2011-04-06 09:01:42下载
- 积分:1
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f11_3
小波消噪算法我用的小波消噪算法我用的小波消噪算法我用的(Wavelet denoising method I use)
- 2011-05-17 22:29:12下载
- 积分:1
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PLS_Regression
利用偏最小二乘方法对数据进行预测,具有较好的预测准确度(Prediction using the PLS regression method)
- 2015-04-02 11:38:58下载
- 积分:1
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matlab
matlab学习教程,包括简单和复杂两部分(matlab脩 搂 脧 掳 陆 脤 鲁 脤 拢 卢 掳 眉脌 篓 录 貌渭 楼 潞 脥 赂 )
- 2008-04-12 21:14:02下载
- 积分:1
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matrix-completion
说明: 一个关于线性卷积的程序,使用通过用托普利兹矩阵完成(Linear convolution of a program on the use of matrix completion by using Top Leeds)
- 2011-04-15 16:56:43下载
- 积分:1
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MditonglvboA
MATLAB低通滤波程序,很好的源代码,希望对大家家有用-filter ,
(MATLAB low pass filtering process, a good source code, I hope useful for all of us home-filter)
- 2012-08-23 22:28:11下载
- 积分:1
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LuoK_D2_Mur
电磁场时域有限差分,二维Mur吸收边界条件(FDTD 2D Mur)
- 2015-03-20 10:00:15下载
- 积分:1