Methods for the in vivo monitoring and measuring of proteins by constructing them as chimeric polypeptides are disclosed. The robot includes a body and first and second feet connected to the body via joints. In the device, while the output video signal for list display of a plurality of images is being generated, the information about the touch position and the information about the pressure are processed as the operation signal for image selection and the operation signal related to the images, respectively. A data to be erased is stored in the block. The method is applicable for training a machine for knowledge engineering and artificial intelligence oriented applications, as well as for a trained machine to assist a human being engaged in the activity of teaching or testing. The pole portions may also have dovetail features that are received in corresponding recesses of the back iron portion.