Abstract: A method of a first communication node may comprise: transmitting, to a second communication node, an initiation signal indicating to initiate a collection procedure of training data for a neural network; transmitting, to the second communication node, an information signal including network parameters of the first communication node; receiving, from the second communication node, the training data in response to the information signal; training the neural network using the training data; determining optimal network parameters using the trained neural network; and performing communication with the second communication node using the optimal network parameters.

Abstract: Disclosed herein is a method for producing a cyst-expressed transgenic animal using a PDK2 gene. The production method comprises preparing a PKD2 protein expression vector, inserting the expression vector into the nucleus of a fertilized egg to produce a PKD2 expression vector-containing fertilized egg, and transplanting the produced fertilized egg into the uterus of a surrogate mother. According to the invention disclosed herein, there is provided a method for producing transgenic animals, in which cysts are expressed only by the overexpression of the PKD2 gene. Also, transgenic mice are provided which can be effectively used in the investigation of cyst expression mechanisms and cyst control systems.