Abstract: A system and a method are disclosed for providing recommendations for sets of security operations for improving security of documents created or executed within an online document system. A supplier entity may select sets of security operations to be performed for a request provided to a signing entity. The online document system computes an aggregate measure of security for the selected sets of security operations and compares it to a threshold measure of security. If the aggregate measure is less than the threshold measure, the online document system uses a machine-learned model to identify additional sets of security operations that when added, results in an updated aggregate measure of security greater than the threshold. The additional sets of security operations are presented to the supplier entity for inclusion within a security operation workflow in combination with the selected sets of security operations.

Abstract: In one embodiment, non-contact assessment of reinforced concrete is performed by positioning a reference electrode in close proximity to a surface of the concrete without contacting the electrode to the surface, vibrating the electrode with a vibration generator, and measuring the electrical potential difference between the electrode and the concrete surface, the potential difference being indicative of the condition of a portion of a reinforcement member positioned below the concrete surface at the location of the electrode.

Abstract: A vascular graft includes a proximal section, integral with two branches which terminate in a distal end-to-end section. The end-to-end section is attached to a host artery at end-to-end anastomoses. Flow of blood from the proximal section to the host artery occurs with a self-correcting flow pattern at the opposing junctions, avoiding arterial bed impingement and associated risk of restenosis.