a

说明：  假设被噪声污染的信号服从高斯分布,估计高斯噪声的方差.(A signal corrupted by a Gaussian noise with unknown variance. It is often of interest to know more about this variance. The function thus returns an estimated variance of the additive noise. )

使用delphi编写的运动会编排程序,还需要更加完善!-Delphi prepared to use the Games schedule, but also need to be more perfect!

说明：  Guide of Mooc (Massive Open Online Courses) (( Arabic Document))

说明：  可以管理网站的权限，实现不同用户登录展示不同的功能。管理员可以添加以及删除用户，并给定用户权限。(It can manage the authority of the website and realize different functions for different users to login and display. Administrators can add and delete users, and give users permissions.)

说明：  viterbi decode by verilog

gps导航协议资料-a GPS navigation data agreement

实现三相交流输入，产生直流电压，并且调制技术采用了SVPWM。(three phase rectifier with SVPWM)

列举一个感冒论域，北航机试题。论域U 条件属性 决策（感冒）d 头疼a1 肌肉痛a2 体温a3 以上为属性。下面是取值。默认1为是，0为否。对于体温来说，0为正常，1为高，2为很高-Listed in a cold domain, BUAA test machine. On the domain U-attribute decision-making conditions (cold) d headache muscle pain a1 over a2 attribute a3 body temperature. The following is a value. Default 1 for yes, 0 for not. The temperature is 0 for normal, 1 high, 2 for high

simulink仿真串级控制系统，包括PID控制，阶跃响应。(Simlink simulation cascade control system, including PID control, step response.)

利用深度学习对特征描述符进行训练，得到较精确的特征描述符(The feature descriptors are trained by depth learning to obtain more accurate feature descriptors)