Abstract: Implantable devices having rougher surfaces and more surface area can be made of polymers such as PEEK or PAEK using a 3D printing process. The 3D implantable devices can be soaked in a lipase solution to etch the surface which can alter the surface energy, surface roughness, and atomic composition. After the lipase solution soaking, the 3D printed implantable devices can be removed from the solution and thoroughly rinsed with a cleaning fluid such as an acetone solution. The outer surfaces of the lipase treated 3D printed implantable device can also be surface activated by UV light or other photocatalytic activity to decrease bacteria attachment and growth. The surface energy of the resulting 3D printed implantable devices enhances patient ingrowth resulting in a faster recovery.

Abstract: The disclosure relates to an offline-online question answering system. In some aspects, the techniques described herein relate to a method including: receiving, by a processor, a query from a user; generating, by the processor, a query embedding representing the query; identifying, by the processor, at least one question corresponding to the query by comparing the query embedding to a plurality of embeddings of questions; and transmitting, by the processor, an answer corresponding to the at least one question to the user in response to the query.

Abstract: A hub involving a large geographical area (e.g., states) communicates with other hubs and with spokes involving smaller geographical areas within the hub area. Selective hubs and spokes form a network in which they communicate messages to one another to enhance a public safety activity. A dynamic response group formed from individuals in the hub and spokes may also be included in the network. The communication between the hubs and spokes may be voluntary and may occur through Radix switches which identify the sender and the recipient, process the message and pass the processed message to the recipient. Each group or individual may be invited, or ask to be invited, into the network. Each group or individual may leave the network voluntarily or at the network's request. The groups and individuals act in the network on a coordinated basis to enhance the public safety activity.