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PersonManager
说明: 用于管理学校宿舍的一个系统,方便登记、管理等,减少手工麻烦(A system for managing school dormitories to facilitate registration, management, etc. and reduce manual troubles)
- 2019-04-01 08:36:10下载
- 积分:1
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AutoMorphicNu
判断一个数是否是自守数,华为机试题目之一。c++编写(isAutoMorphicNum the test by huawei)
- 2015-10-27 12:36:30下载
- 积分:1
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matlab常用纹理特征提取方法(GLCM,GLDS)
完整代码,改路径即可实现,图像matlab灰度差分统计实现(Complete code, change the path can be achieved)
- 2020-09-12 08:58:00下载
- 积分:1
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IEC_61000-4-5_2014
说明: used in new product development
- 2019-01-19 21:11:22下载
- 积分:1
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skinPowerBuilder
对程序进行皮肤更换,使界面美观大方,颜色柔和。(Skin change)
- 2009-10-06 00:11:24下载
- 积分:1
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STM32MQTT
说明: STM32MQTT客户端实现,使用MQTT二次开发包(STM32MQTT Client Implementation)
- 2020-12-19 18:09:19下载
- 积分:1
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Mie理论归一化散射光强的研究
说明: 基于matlab的mie散射理论研究相关程序(Research on Mie scattering theory based on MATLAB)
- 2019-11-19 10:17:30下载
- 积分:1
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这是一个阅读器顶好的,快来看看!!!
这是一个阅读器顶好的,快来...
这是一个阅读器顶好的,快来看看!!!
这是一个阅读器顶好的,快来-This is an excellent reader, hurry! ! ! This is an excellent reader, hurry!
- 2022-02-09 16:18:57下载
- 积分:1
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java数据库驱动 对于数据库连接有作用
java数据库驱动 对于数据库连接有作用-java
- 2022-03-02 15:22:24下载
- 积分:1
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did
双重差分估计
双重差分模型(difference-in-difference,DID)近年来多用于计量经济学中对于公共政策或项目实施效果 的定量评估。
通常大范围的公共政策有别于普通科研性研究,难以保证对于政策实施组和对照组在样本分配上的完全随机。非随机分配政策实施组和对照组的试验称为自然试验(naturaltrial),此类试验存在较显著的特点,即不同组间样本在政策实施前可能存在事前差异,仅通过单一前后对比或横向对比的分析方法会忽略这种差异,继而导致对政策实施效果的有偏估计。(Quantitative evaluation of policy or project implementation effect. Generally, a wide range of public policies is different from general scientific research, and it is difficult to ensure that the sample allocation for the policy implementation group and the control group is completely random. The non-randomly assigned policy implementation group and the control group are called natural trials, which have significant characteristics, i.e. there may be prior differences between the different groups of samples before the implementation of the policy, and this difference will be ignored only through a single pre-and post-comparison or horizontal comparison analysis method, which leads to the policy. Biased estimation of implementation)
- 2020-07-03 20:00:01下载
- 积分:1