System and methods for entropy and statistical quality metrics in physical unclonable function generated bitstrings

    公开(公告)号:US11095461B2

    公开(公告)日:2021-08-17

    申请号:US16346772

    申请日:2017-11-03

    Applicant: STC.UNM

    Abstract: The Distribution Effect is proposed for the HELP PUF that is based on purposely introducing biases in the mean and range parameters of path delay distributions to enhance entropy. The biased distributions are then used in the bitstring construction process to introduce differences in the bit values associated with path delays that would normally remain fixed. Offsets are computed to fine tune a token's digitized path delays as a means of maximizing entropy and reproducibility in the generated bitstrings: a first population-based offset method computes median values using data from multiple tokens (i.e., the population) and a second chip-specific technique is proposed which fine tunes path delays using enrollment data from the authenticating token.

    Dry powder nebulizer
    417.
    发明授权

    公开(公告)号:US10702664B2

    公开(公告)日:2020-07-07

    申请号:US15676705

    申请日:2017-08-14

    Applicant: STC.UNM

    Abstract: A dry powder delivery device may be configured to provide micronized dry powder particles to airways of a user. The device may include a cylindrical container delimiting a chamber containing at least one magnetically-responsive object, a motor external to said chamber, a magnet external to the chamber and rotatably coupled with the motor, and an outflow member configured to direct airflow to a user. The magnetically-responsive object may be coated with micronized dry powder particles, and the motor may be operable to rotate the magnet about an axis. Rotation of the magnet creates a magnetic field that causes the magnetically-responsive object to move in response to the magnetic field and collide with a side wall of the container to deaggregate the dry powder particles and aerosolize the dry powder in the chamber.

    Cell-based composite materials with programmed structures and functions

    公开(公告)号:US10605705B2

    公开(公告)日:2020-03-31

    申请号:US15950979

    申请日:2018-04-11

    Abstract: The present invention is directed to the use of silicic acid to transform biological materials, including cellular architecture into inorganic materials to provide biocomposites (nanomaterials) with stabilized structure and function. In the present invention, there has been discovered a means to stabilize the structure and function of biological materials, including cells, biomolecules, peptides, proteins (especially including enzymes), lipids, lipid vesicles, polysaccharides, cytoskeletal filaments, tissue and organs with silicic acid such that these materials may be used as biocomposites. In many instances, these materials retain their original biological activity and may be used in harsh conditions which would otherwise destroy the integrity of the biological material. In certain instances, these biomaterials may be storage stable for long periods of time and reconstituted after storage to return the biological material back to its original form. In addition, by exposing an entire cell to form CSCs, the CSCs may function to provide a unique system to study enzymes or a cascade of enzymes which are otherwise unavailable.

    FEEDING TUBE VISUALIZATION
    420.
    发明申请

    公开(公告)号:US20190298222A1

    公开(公告)日:2019-10-03

    申请号:US16467275

    申请日:2017-12-07

    Applicant: STC.UNM

    Abstract: An apparatus for determining a position of an object inside a body includes a first detector configured to receive a signal from the object inside the body. The apparatus also includes a camera configured to capture an image or video of outside of a portion of the body. The object is positioned inside the portion of the body. A connoting system is configured to receive the signal from the first detector and the image or video from the camera and to determine the position of the object inside the body. A screen is configured to display die position of the object inside the body.

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