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网上考试系统的好多的论文 关于研究与实现的 大家快安看
网上考试系统的好多的论文 关于研究与实现的 大家快安看-online examination system has many papers on the study and implementation of security you see fast
- 2023-03-23 06:50:03下载
- 积分：1
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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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对游戏引擎有初步的认识！对开发游戏有很大的帮助作用
对游戏引擎有初步的认识！对开发游戏有很大的帮助作用-On the game engine has a preliminary understanding! On the development of the game has a lot of help
- 2022-01-31 03:03:27下载
- 积分：1
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1111
24点算法 用C++实现 可以输出多个24点的算式 (24-point algorithm in C++ implementation can output more than 24 points formula)
- 2011-06-22 09:01:16下载
- 积分：1
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03120104零件切割问题
说明： 本程序可以实现零件切割问题.
其中的文件均得放在一个目录下(this procedure can be achieved parts mutilation. The documents placed in a directory)
- 2005-12-03 03:35:52下载
- 积分：1
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基于DirectX开发俄罗斯方块游戏 应用于c++语言
基于DirectX开发俄罗斯方块游戏 应用于c++语言-DirectX Visu C++ e luo si fang kuai
- 2022-02-03 03:57:21下载
- 积分：1
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HFSS 高低阻抗滤波器 5节，可调参数，优化
HFSS 高低阻抗滤波器 5节，可调参数，优化-HFSS high and low impedance filter 5, adjustable parameters, optimization
- 2023-05-30 14:40:02下载
- 积分：1
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KECA_Journal_Article
说明： Robert Jenssen 撰写论文原文(We introduce kernel entropy component analysis (kernel ECA) as a new method for data transformation and dimensionality reduction. Kernel ECA reveals structure relating to the Renyi entropy of the input space data set, estimated via a kernel matrix using Parzen windowing. This is achieved by projections onto a subset of entropy preserving kernel principal component analysis (kernel PCA) axes)
- 2019-01-03 20:07:38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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Win32控制台类型App的颜色控制,
SetConsoleTextAttribute,GetConsoleScreenBufferInfo,FillCon...
Win32控制台类型App的颜色控制,
SetConsoleTextAttribute,GetConsoleScreenBufferInfo,FillConsoleOutputAttribute,SetConsoleCursorPosition
-Win32 console type App color control, SetConsoleTextAttribute, GetConsoleScreenBufferInfo, FillConsoleOutputAttribute, SetConsoleCursorPosition
- 2022-03-26 10:27:22下载
- 积分：1
