Abstract: DSM-LGA using substrates with different surface finish options include copper posts for electrical communication. The copper posts include a height-to-width ratio that cannot be achieved in traditional copper posts, as well as a taper ratio that forms a more rectangular cross section as opposed to traditional copper posts. Additionally, by using copper, the copper posts include a relatively high thermal conductivity (as compared to solder), thus allowing the copper posts to dissipate thermal energy generated by integrated circuits and other processors. Copper posts can take the form of a single, cylindrical post. Alternatively, copper posts can be merged to form a variety of copper structures used for various applications, including I/O, grounding/isolation, and substrate support.

Abstract: A method of reinforcement learning of a neural network device for generating a verification vector for verifying a circuit design comprising a circuit block includes inputting a test vector to the circuit block, generating one or more rewards based on a coverage corresponding to the test vector, the coverage being determined based on a state transition of the circuit block based on the test vector, and applying the one or more rewards to a reinforcement learning.

Abstract: An explosive bolt includes: a bolt body forming a receiving space therein; a pressure transmitting means received in the receiving space of the bolt body; a pressure generating means connected to the pressure transmitting means and generating pressure; and a cut portion formed at the bolt body and cut upon receiving pressure generated from the pressure generating means through the pressure transmitting means. Accordingly, the amount of gunpowder used is minimized, and a position of a cut portion can be freely designed and fixed, thereby not only minimizing explosion impact and noise but also improving productivity and reliability.