Abstract: Systems, methods, and devices are described for monitoring and protecting electronic hardware, data assets, and the facility itself, particularly well-suited to monitoring remote facilities and resources in edge locations, including for determining door state for both equipment and personnel doors, and for determining values of one or more environmental parameters, using optical image analytics. An example system includes one or more edge-located hardware monitoring devices having one or more physical sensors, and custom software distributed across edge, cloud, mobile, and enterprise platforms. An example monitoring device can include an embedded computer, various sensors of different types, one or more cameras, a power supply, and several communication interfaces. All or virtually all sensing and processing capabilities can be integrated into the edge device, which utilizes low-cost sensors and video analytics to monitor the environment.

Abstract: There is disclosed in one example an inner loop controller for an aircraft flight computer, including: a stall protection circuit to compute, for an attitude angle ?, an attitude limit ?max as a function of a flight path angle (?) and an angle of attack limit (?max); a transfer function circuit to convert ? to an attitude rate {dot over (?)}, wherein {dot over (?)} is a time derivative of ?; and a load protector circuit to compute a limit on {dot over (?)} ({dot over (?)}max) as a function of a load factor limit (Nz,max) and a true airspeed (v).

Abstract: A modular service interface is provided. The modular service interface includes separable first and second halves, one or more alignment features, a connector interface and one or more electropermanent magnet modules, connector interface configured to mate the first and second halves when activated and allow the first and second halves to be separated when inactivated. The modular service interface includes no mechanical actuators to retain the first half to the second half.

Abstract: A vehicle includes an electric machine having a rotor and a stator, a resolver that measures a position of the rotor relative to the stator, and a controller. The controller, based on the position and a resolver offset, injects a first current having only a d-axis component into the electric machine, and responsive to detecting a first motion output of the electric machine being greater than a threshold, adjusts the resolver offset according to a magnitude and direction of the first motion output.

Abstract: A device includes a memory and at least one processor coupled to the memory. The at least one processor is configured to obtain an image and determine a parent cluster of pixels of an image having a centroid. The at least one processor is also configured to split the parent cluster into at least a first child cluster and a second child cluster and assign a pixel of the image to the first child cluster. Additionally, the at least one processor is configured to update a centroid of the first child cluster based at least in part on the pixel, replace the pixel in the image with the centroid of the first child cluster to produce a compressed image, and store the compressed image in the memory.

Abstract: A system for retaining a folded proprotor blade in flight. The system includes a mounting plate, a first arm coupled to the mounting plate at an acute angle relative to the mounting plate, and a first deformable pad affixed to the first arm and adapted to contact the folded proprotor blade.

Abstract: A humidification system can include a heater base, a chamber, and a breathing circuit. The heater base includes a heater plate positioned in a recessed region, and a heat conductive portion of the chamber is configured to contact the heater plate. The heater base includes a guard configured to control movement of the chamber into and out of the recessed region. The guard includes an anti-racking mechanism. The chamber includes an inlet port, an outlet port. A downward extension extends into the chamber from the inlet port, and a baffle is disposed at a lower end of the downward extension. A component of the breathing circuit can include a conduit hanging end cap for shipping and storage. The end cap can include a hanging component to allow the breathing circuit component to be hung from a medical stand. The system can detect when breathing circuits are connected in reverse.

Abstract: Presented here is a system that manages secured file system, and an authority to the secured file system, by granting access only to a user who is authorized to access the file system. The user within the system is identified using a unique key unique to each user. The user's authority is recorded in a linear sequence distributed among multiple devices each of which independently verifies the validity of each block in the linear sequence. The validity of the linear sequence is guaranteed by preventing certain operations from being performed on the linear sequence, such as branching of the linear sequence, deletion, and modification of the blocks within the linear sequence. Prior to adding a new block to the linear sequence, the validity of the block is independently computed by each of the devices.

Abstract: The present disclosure provides packages that are configured for containing a prophylactic device and a quantity of lubricant material. The package can include a first portion defining a first chamber containing a prophylactic device; and a second portion defining a second chamber containing a quantity of lubricant composition; wherein the first chamber of the first portion and the second chamber of the second portion are arranged to separably engage one another about external surfaces of the first portion and the second portion so as to form a unitary package. The present disclosure further provides methods for providing a lubricated prophylactic device.

Abstract: A method to compress an image includes assigning each pixel of the image to a cluster based on a red-green-blue (RGB) location of the pixel. The method also includes updating a centroid of the cluster after each pixel is assigned, based at least in part on the RGB location of the pixel, where the centroid is an RGB location. The method includes replacing each pixel in the image with an RGB value of the centroid of the cluster to which the pixel is assigned. The method also includes instructing a display to display a compressed image where, in the compressed image, each pixel in the image is replaced with the RGB value of the centroid of the cluster to which the pixel is assigned.

Abstract: A method is provided. The method includes axially aligning a carrier portion of a separable robotic interface with a probe portion, the carrier portion coupled to a free end of a robotic arm, sliding the carrier portion over the probe portion in response to radially orienting a first alignment feature between the probe portion and the carrier portion, and in response compressing a spring-loaded plug in the carrier portion to release one or more ball bearings to make contact with an outer surface of the probe portion, the plug radially coupled to the carrier portion through a second alignment feature, seating the one or more ball bearings into matching recesses in the outer surface in response to sliding the carrier portion over the probe portion a predetermined distance, and rotating a locking ring of the carrier portion to axially lock the carrier portion to the probe portion.

Abstract: A sensor device for detecting voltage in a conductor cable includes a sense electrode to be disposed over a surface of the conductor cable to cover a sense region having a sense axial width and a sense circumferential length and a reference electrode to be disposed over the surface of the conductor cable to cover a reference region. The reference region has an axial position adjacent the axial position of the sense region and has a reference circumferential length greater than the sense circumferential length. The sensor device further includes a charge measurement circuit connected in series between the sense electrode and the reference electrode to measure a charge measurement and circuitry to compare the charge measurement to a threshold to detect a presence of the voltage in the conductor cable.

Abstract: A vehicle includes an electric machine having a rotor and a stator, a resolver that measures a position of the rotor relative to the stator, and a controller. The controller, based on the position and a resolver offset, injects a first current having only a d-axis component into the electric machine, and responsive to detecting a first motion output of the electric machine being greater than a threshold, adjusts the resolver offset according to a magnitude and direction of the first motion output.

Abstract: Disclosed is a system and method to create an encrypted file system on a block chain. The system creates the block chain controlling an access to the encrypted file system. The block chain defines a user permission to access at least a portion of the encrypted file system. The system creates the encrypted file system by recording a unique file ID in the block chain, where the unique file ID stores a chunk index including memory locations of multiple chunks storing portions of a file in the encrypted file system. The system encrypts the file using a channel session key and a file encryption key. The channel session key includes a cryptographic key computed based on information known to users granted at least a temporary access to the file, and the file encryption key includes a cryptographic key used to encrypt each file in the encrypted file system.

Abstract: In an embodiment, a duct for a ducted-rotor aircraft includes a hub, the hub including a rotor and one or more motors configured to drive the rotor. The duct also includes a duct ring that defines an opening surrounding at least a portion of the hub. The duct also includes a plurality of stators that extend outward from the hub. The duct also includes at least one battery electrically coupled to the rotor and configured to power the one or more motors.

Abstract: Techniques and arrangements for analyzing previous tickets of a customer at different merchants—specifying interactions of the customer at the different merchants—to determine subsequent recommendations to send to a particular merchant in real-time when the customer is located at the particular merchant. Other techniques and arrangements facilitate annotation of merchant tickets by the merchants to enrich the data maintained by the tickets and, in some instances, to enhance the described real-time recommendations. Still other techniques and arrangements create a merchant ticket for recording interactions between a merchant and customer upon the customer creating a reservation at the merchant for a specified future time, or being added to a waitlist of the merchant. Upon the customer arriving at the merchant proximate to the specified future time, the merchant may use the created ticket to track items ordered by the merchants, track tenders used to pay for items, and the like.

Abstract: A block chain defining authority and access to confidential data may not be encrypted, and the access to the block chain can be regulated by the block chain itself and an access control server operating in an enterprise information technology (IT) environment. To incorporate authority defined in multiple sources, such as the block chain and the access control server, a token can be created containing multiple layers of permissions, i.e. constraints, coming from multiple sources. Each additional permission attenuates the authority granted by the token. When a processor controlling the access to the block chain receives the token, the processor can check the validity of the token and the authority granted by the token to determine whether the requester is authorized to access at least a portion of the block chain.