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yuanma
小波分析非常好的学习资料，都是源码，希望对大家有所帮助！(Wavelet analysis is very good learning materials, all source code, want to help you!)
- 2009-12-21 23:50:45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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FEM
使用有限元法求解一维伯努利梁的位移和应力算例。(an example of sovlving Euler-Bernoulli beam problem with FEM)
- 2013-03-26 22:23:52下载
- 积分：1
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timeclient_src
同步日期和时间的例子。(date and time synchronization example.)
- 2004-10-20 11:45:14下载
- 积分：1
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txt文件数据分析
说明： 对于一个存储了五门课成绩的txt文本，进行数据读取、数据分离、画出变化曲线。(For a TXT text that stores the scores of five courses, data reading, data separation and drawing change curve are carried out)
- 2020-02-19 10:59:59下载
- 积分：1
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matlab
matlabhow can we use matlab to design a programme for mathe and what we can do for our matlab(how can we use matlab to design a programme for mathe and what we can do for our matlab)
- 2011-07-15 13:31:17下载
- 积分：1
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FM_dspbuilder
matlab下用dspbuilder编写的FM调制波形例子，比较初级，供新手学习。(Under matlab prepared dspbuilder FM modulation waveform example, compare the primary for the novice to learn.)
- 2014-02-01 19:07:42下载
- 积分：1
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chengxu
本程序特别适合于弹道计算等方面使用。比ODE45函数的速度加快了很多，且程序充分展示了Matlab向量运算的强大功能，以及编程的简单快捷。(The program is especially suitable for ballistic calculation such as the use of. Than the ODE45 function more quickly, and it shows the powerful function of Matlab vector operations, and programming is simple and quick.)
- 2013-09-22 14:43:44下载
- 积分：1
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ROBOT
三自由度机械臂的运动工作空间，可以实现角度与坐标的变换(Three degree of freedom mechanical arm movement working space, may realize the angle and the transformation of coordinates)
- 2012-01-03 16:46:29下载
- 积分：1
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mhmm_em_demo
对高斯输出的hmm的源程序，对hmm的学习者有很大帮助
- 2010-01-10 11:51:52下载
- 积分：1
