Abstract: A neuron device is described. The neuron device is based on spontaneous polarization switching which includes a plurality of gate electrodes, a plurality of drain electrodes, a plurality of source lines, a dielectric layer, and a semiconductor layer. The gate electrodes are arranged parallel to each other. The drain electrodes are arranged parallel to each other. The source lines are arranged between the gate electrodes and the drain electrodes and parallel to each other. The dielectric layer is formed at intersections between the gate electrodes and the source lines. The semiconductor layer is formed at intersections between the drain electrodes and the source electrodes. The drain electrodes function as synapse-after-neuron linking terminals. The gate electrodes adjust an arrangement direction of electrical dipoles of the dielectric layer to control a firing time point and a firing height of the neuron device.

Abstract: A coupled via structure includes a plate via penetrating through an board body and having first and second plates spaced apart from each other by a first gap distance, a contact pad connected to the plate via on a surface of the board body and having first and second contacts connected to the first and second plates, respectively, and a connection line connected to the contact pad on the surface of the board body and having first and second lines connected to the first and second contacts, respectively, and spaced apart from the first line by a second gap distance. Accordingly, the deviation of the characteristic impedance is reduced (or, alternatively, minimized) between the coupled via structure and the coupled signal line.

Abstract: The present invention relates to a context-specific experience sampling method comprising the steps of: collecting user's experience information; classifying the collected user's experience information and selecting keywords representing the classified user's experience information; generating a questionnaire to be applied to experience sampling based on the keywords; providing the questionnaire to the user; receiving response data by each activity for a context and an environment that the user has experienced, in response to the questionnaire; and analyzing a relationship between the user's context and environment and the user's experience, based on the response data by each activity for the user's context and environment.