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Ping
本程序能快速扫描内网IP，选择IP开始和结束段就可以使用啦，本程序内涵源码，逻辑简单，不需要其它控件，delphi 2010开发(This program can scan intranet IP quickly.)
- 2020-06-21 08:40:02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
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测量仪器控制程序，可以控制仪器进行隧道断面测量。
测量仪器控制程序，可以控制仪器进行隧道断面测量。-Measuring instrument control program to control the tunnel cross-section measurement instruments.
- 2023-02-13 13:11:03下载
- 积分：1
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scma ldpc
说明： SCMA with LDPC code
- 2020-12-10 16:29:20下载
- 积分：1
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MXD2PDF
说明： arcgis，mxd批量生成pdf，速度快！(Arcgis, MXD batch generation pdf, fast!)
- 2019-06-30 16:50:37下载
- 积分：1
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Excel.olb是用于在VC++MFC里生成Excel的库,文件来自于MS Office 10
Excel.olb是用于在VC++MFC里生成Excel的库,文件来自于MS Office 10-Excel.olb is used in VC++ MFC in Excel to generate the library, documents from MS Office 10
- 2022-03-01 13:16:43下载
- 积分：1
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ppt&src
C语言基础课件包含ppt，需要的朋友可以下载学习。(C language basic courseware contains PPT, and the friends you need can download and study.)
- 2017-11-09 23:09:28下载
- 积分：1
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征服登录器网关源码
简洁版、登录器+网关。注册。修改账号等功能171zf免费征服发布网提供研究用(Concise version, logger + gateway. Registration. Modify the account number and other functions 171zf conquer publishing network to provide research.)
- 2018-10-03 19:54:53下载
- 积分：1
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07136288
说明： 本程序是使用 TURBO C 语言BOSS窗口开发程序库的应用程序,(This program is the use of TURBO C language BOSS window development program library application,)
- 2018-12-31 10:43:56下载
- 积分：1
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Propeuurties
说明： c++Primer书籍电子版，让读者可以在电脑或者手机方便的阅读。(C++ Primer Book Electronic edition, so that readers can easily read on the computer or mobile phone.)
- 2020-06-24 19:20:02下载
- 积分：1
