Period 08/15/98-11/30/00, Title Active Seismic Imaging of Axial Volcano, PI's William Menke & Maya Tolstoy. The region of Axial Volcano, Juan de Fuca Ridge region provides an excellent opportunity to study the interplay between active "hot spot" and "mid-ocean ridge" magmatic systems. Important questions include how the two magma systems are fed; their magma and heat budgets; the degree of inte...

This paper reviews exploration techniques in deep reinforcement learning. Exploration are of primary importance when solving sparse reward problems. In problems, the is rare, which means that agent will not find often by acting randomly. such a scenario, it challenging for learning to learn rewards and actions association. Thus more sophisticated methods need be devised. review provides compreh...

Intrinsically motivated goal exploration algorithms enable machines to discover repertoires of policies that produce a diversity of effects in complex environments. These exploration algorithms have been shown to allow real world robots to acquire skills such as tool use in high-dimensional continuous state and action spaces. However, they have so far assumed that self-generated goals are sampl...

Intrinsically motivated goal exploration algorithms enable machines to discover repertoires of policies that produce a diversity of effects in complex environments. These exploration algorithms have been shown to allow real world robots to acquire skills such as tool use in high-dimensional continuous state and action spaces. However, they have so far assumed that self-generated goals are sampl...

This paper describes the development of a Virtual Camera (VC) system to improve astronaut and mission operations situation awareness while exploring other planetary bodies. It is claimed that the advanced interaction media capability of the VC can improve situation awareness as the distribution of human space exploration roles change in deep space exploration. It can minimize the risk of astron...

Abstract Deep low-frequency (DLF) earthquakes have occurred at depths of 10–30 km in the Kirishima volcanic complex, Japan. Here, we investigate DLF earthquake activity that was associated with 2018 eruptions, compare these those 2011 and provide inferences on magmatic fluid ascension during two eruptions. We apply a new matched-filter method to continuous waveform data from 2017–2018 period co...

Abstract Variations in seismic velocities are essential in developing a better understanding of continental plate tectonics. Fortunately, the USArray has provided an excellent set of regional phases from the recent M5.6 Oklahoma earthquake (6 November 2011, Table 1) that can be used for such studies. Its strike-slip mechanism produced an extraordinary set of tangential recordings extending to t...

Background: Trauma is one of the most common causes of death in all ages. Considering the prevalence of trauma in the general population, and its costs and complications, it is important to use aiding tools to accelerate the diagnosis in order to act in time. The aim of this study was to evaluate the efficacy of ultrasound in diagnosing nerve and tendon injuries in the upper extremities. Metho...