Prefrontal modulation of context-specific memory encoding and retrieval in the hippocampus

    公开(公告)号:US10664749B1

    公开(公告)日:2020-05-26

    申请号:US15093730

    申请日:2016-04-07

    Abstract: Described is a system for storing and retrieving a memory in context. A memory formed for a given context is encoded in a neural model of the entorhinal-hippocampal system, forming a context-appropriate memory. The context-appropriate memory is comprised of an association between presented environmental cues and presence of a rewarded event. The system is able to discriminate between environmental cues in an environment surrounding a vehicle and retrieve at least one encoded context-appropriate memory. Using the at least one retrieved encoded context-appropriate memory, the system determines whether to initiate a collision avoidance operation to cause the vehicle to proactively avoid a collision.

    Digital alloy based back barrier for P-channel nitride transistors

    公开(公告)号:US10651306B2

    公开(公告)日:2020-05-12

    申请号:US15687369

    申请日:2017-08-25

    Inventor: Rongming Chu Yu Cao

    Abstract: A III-nitride power handling device and the process of making the III-nitride power handling device are disclosed that use digital alloys as back barrier layer to mitigate the strain due to lattice mismatch between the channel layer and the back barrier layer and to provide increased channel conductivity. An embodiment discloses a GaN transistor using a superlattice binary digital alloy as back barrier comprising alternative layers of AlN and GaN. Other embodiments include using superlattice structures with layers of GaN and AlGaN as well as structures using AlGaN/AlGaN stackups that have different Aluminum concentrations. The disclosed device has substantially increased channel conductivity compared to traditional analog alloy back barrier devices.

    SYSTEM AND METHOD FOR CONSENSUS ORDERING OF BROADCAST MESSAGES

    公开(公告)号:US20200084159A1

    公开(公告)日:2020-03-12

    申请号:US16450170

    申请日:2019-06-24

    Abstract: The system is directed to a plurality of nodes in a network and a process by which the nodes reach a consensus ordering of broadcast messages. For example, one or more nodes proceed by agreeing on an order of two or more broadcast message derived events A and B. If a node sees event A longer than a time period (T6) before seeing event B, then the node outputs “A consensus-before B” as a consensus broadcast ordering. If the node sees the event A and not the event B after waiting at least T6, then the node outputs “A consensus-before B” as a consensus broadcast ordering. However, if the node sees both events A and event B within T6, then the node broadcasts a request for a vote on message ordering, executes a consensus broadcast reception protocol for the votes, and makes an ordering decision based on the votes received.

    Adaptive nulling metasurface retrofit

    公开(公告)号:US10573963B1

    公开(公告)日:2020-02-25

    申请号:US15706100

    申请日:2017-09-15

    Abstract: An adaptive detection and nulling system includes an antenna or radio frequency aperture, an electronically tunable radome placed over the antenna or radio frequency aperture, the radome including a plurality of scatterers on a substrate, and one or more tunable reactance elements connecting at least two of the scatterers, a microcontroller coupled to the tunable reactive elements and configured to control the reactance values of the one or more tunable reactance elements, and a sensing circuit coupled to the microcontroller, wherein inputs from the sensing circuit are used by the microcontroller to adaptively determine bias voltages to the one or more tunable reactance elements using characterization data of the radome to control the tunable reactance elements to form one or more nulls in a receive radiation pattern of the antenna.

    ANONYMOUS ALLOCATION AND MAJORITY VOTING IN A COMPROMISED ENVIRONMENT

    公开(公告)号:US20200052890A1

    公开(公告)日:2020-02-13

    申请号:US16433928

    申请日:2019-06-06

    Abstract: Described is a system for anonymous job allocation and majority voting in a cloud computing environment. The system broadcasts a job to physical nodes, each of the physical nodes having a control operations plane (COP) node and one or more service nodes associated with the COP node. A set of redundant job assignments is distributed to individual COP nodes pursuant to a private job assignment schedule, such that each individual COP node is only aware of its own assignment and corresponding job. The service nodes execute the job assigned to the COP nodes such that the service nodes each complete a task associated with the job and forward an individual result to their associated COP node. A privacy-preserving result checking protocol is performed amongst the COP nodes such that secret shares of a majority result are obtained and the majority result is provided to a client.

    ALUMINUM WITH GRAIN REFINERS, AND METHODS FOR MAKING AND USING THE SAME

    公开(公告)号:US20200024700A1

    公开(公告)日:2020-01-23

    申请号:US16223858

    申请日:2018-12-18

    Abstract: We have developed a scalable approach to directly incorporate grain-refining nanoparticles into conventional hot-tear-susceptible pure aluminum or aluminum alloy powders. These aluminum alloy powders may be additively manufactured into high-strength, crack-free aluminum alloys with fine equiaxed microstructures by incorporating nanoparticle nucleants to control solidification during additive manufacturing. Some variations provide an additively manufactured aluminum alloy comprising aluminum and at least one grain-refining element, wherein the additively manufactured aluminum alloy has a microstructure with equiaxed grains. Pure aluminum or aluminum alloys, combined with grain refiners, are useful in many processes beyond additive manufacturing. Some variations provide an aluminum alloy comprising aluminum and grain-refining nanoparticles selected from zirconium, tantalum, niobium, or titanium, wherein the aluminum alloy has a microstructure that is substantially crack-free with equiaxed grains.

    Lightweight sandwich panel heat pipe

    公开(公告)号:US10527359B1

    公开(公告)日:2020-01-07

    申请号:US15671031

    申请日:2017-08-07

    Abstract: A sandwich panel heat pipe with a three-dimensional ordered open-cellular micro-truss core and a method creating the same. In one embodiment, the sandwich panel heat pipe includes a first face sheet, a second face sheet, the three-dimensional ordered open-cellular micro-truss core between the first face sheet and the second face sheet, and a working fluid in the ordered open-cellular micro-truss core. Here, the three-dimensional ordered open-cellular micro-truss core includes a vapor region and a liquid region, the vapor region is for transporting a vapor phase portion of the working fluid to the liquid region, and the liquid region is for transporting a liquid phase portion of the working fluid to the vapor region.

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