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Detection of QRS wave of more detailed procedures, including the starting point of QRS wave, peak detection.

NSArray Class Reference for Developers

史密斯圆图的应用, 包括阻抗匹配，计算方法等(Smith chart applications, including impedance matching, calculation methods)

产生两不迥频率的信号，并对两信号作复数FFT变换，找出频率为50Hz的信号对其进行能量计算(Two distant signal is not generated frequency, and two signals for complex FFT transform to identify the frequency of 50Hz signal to calculate its energy)

matlab实现的1范数优化代码，实现绝对值偏差最小的算法。(matlab norm to achieve a optimized code to achieve the smallest absolute deviation algorithm.)

稀疏表示，使得数据简单看，而且易懂，是流行的一种数据表示方法(Sparse representation，Make the data look simple, but to understand, is one of the popular data representation method)

UINavigationController Push 堆栈动画(The Stack Animation of Push when UINavigationController‘s pushed)

ai prolog examples ai prolog examples ai prolog examples ai prolog examples ai prolog examples (ai prolog examples)

objective-c textfield 下拉菜单实现(objective-c textfield drop-down menu to achieve)

NSString框架的学习，包括NSNumber等 NSString框架的学习，包括NSNumber等(NSString framework of learning, including learning NSNumber etc. NSString framework, including NSNumber etc.)