Abstract: A machine learning approach is herein provided for preparing a model for assessing the progression of a lung disease, comprises receiving a first set of segmented images of lungs from different patients with the lung disease. The first set of images is segmented and used to train the model. The trained model is applied to a set of unsegmented images to generate a second set of segmented images. The model is updated with the second set of segmented segmentation. From the model, at least one result associated with progression of the lung disease is outputted.

Abstract: A bleed valve assembly of a gas turbine engine includes two or more valve segments extending circumferentially around a central longitudinal axis of the gas turbine engine, and a first splice bracket spanning a first joint between a first valve segment and a second valve segment of the two or more valve segments. The first splice is bracket secured to the first valve segment and the second valve segment. A second splice bracket spans a second joint between the first valve segment and the second valve segment. The second splice bracket is secured to the first valve segment and the second valve segment.

Abstract: A bleed valve assembly of a gas turbine engine includes two or more valve segments extending circumferentially around a central longitudinal axis of the gas turbine engine, and a first splice bracket spanning a first joint between a first valve segment and a second valve segment of the two or more valve segments. The first splice is bracket secured to the first valve segment and the second valve segment. A second splice bracket spans a second joint between the first valve segment and the second valve segment. The second splice bracket is secured to the first valve segment and the second valve segment.

Abstract: A hydropyrolysis catalyst and a process using that catalyst are described. The catalyst comprises a support and an active metal component wherein the catalyst is an eggshell type catalyst having the active metal component located in the outer portion of the support.

Abstract: A hydropyrolysis catalyst and a process using that catalyst are described. The catalyst comprises a support and an active metal component wherein the catalyst is an eggshell type catalyst having the active metal component located in the outer portion of the support.

Abstract: In some examples, a device may include at least one communication interface configured to exchange signals with another device, and a pairable component configured to: assure the another device of mutual proximity by exchange of at least two progressively increasing locator signals and corresponding acknowledgement signals, receive executable validating code from the another device, execute the validating code, output a self-validating result of executing the validating code, verify pairing with the another device, and generate a secret key to ensure a private exchange of data between the mutually proximate, paired, and validated device and another device.

Abstract: Technologies are generally described for distance determination between two or more RFID tags based on a minimum detectable signal. In some examples, a first RFID tag may establish communication with a second RFID tag, and modulate an irradiating electromagnetic field to generate backscatter signals for sequential transmission to the second RFID tag. A depth of amplitude modulation of each transmitted signal may be progressively reduced until the second RFID tag can no longer detect the modulation. The particular distance between the first and second RFID tags may then be determined based on a minimum detectable signal by the second RFID tag, which may be identified as a last transmitted signal detected by the second RFID tag. In some embodiments, distance determination between two or more RFID tags as described above may be implemented for robotic sensing, assembly systems, security, and wearable technology to track motion and/or position of objects.

Abstract: A process for converting biomass to products is described. Biomasss is contacted with hydrogen in the presence of a fluidized bed of hydropyrolysis catalyst in a reactor vessel under hydropyrolysis conditions; and products and char are removed from the reactor vessel. The products leave the fluidized bed at an exit bed velocity, the char has a settling velocity that is less than the exit bed velocity and hydropyrolysis catalyst has a settling velocity that is greater than the exit bed velocity.

Abstract: In some examples, a device may include at least one communication interface configured to exchange signals with another device, and a pairable component configured to: assure the another device of mutual proximity by exchange of at least two progressively increasing locator signals and corresponding acknowledgement signals, receive executable validating code from the another device, execute the validating code, output a self-validating result of executing the validating code, verify pairing with the another device, and generate a secret key to ensure a private exchange of data between the mutually proximate, paired, and validated device and another device.

Abstract: A process for converting biomass to products is described. Biomass is contacted with hydrogen in the presence of a fluidized bed of hydropyrolysis catalyst in a reactor vessel under hydropyrolysis conditions; and products and char are removed from the reactor vessel. The products leave the fluidized bed at an exit bed velocity, the char has a settling velocity that is less than the exit bed velocity and hydropyrolysis catalyst has a settling velocity that is greater than the exit bed velocity.

Abstract: In some examples, a device may include at least one communication interface configured to exchange signals with another device, and a pairable component configured to: assure the another device of mutual proximity by exchange of at least two progressively increasing locator signals and corresponding acknowledgement signals, receive executable validating code from the another device, execute the validating code, output a self-validating result of executing the validating code, verify pairing with the another device, and generate a secret key to ensure a private exchange of data between the mutually proximate, paired, and validated device and another device.

Abstract: Technologies are generally described for distance determination between two or more RFID tags based on a minimum detectable signal. In some examples, a first RFID tag may establish communication with a second RFID tag, and modulate an irradiating electromagnetic field to generate backscatter signals for sequential transmission to the second RFID tag. A depth of amplitude modulation of each transmitted signal may be progressively reduced until the second RFID tag can no longer detect the modulation. The particular distance between the first and second RFID tags may then be determined based on a minimum detectable signal by the second RFID tag, which may be identified as a last transmitted signal detected by the second RFID tag. In some embodiments, distance determination between two or more RFID tags as described above may be implemented for robotic sensing, assembly systems, security, and wearable technology to track motion and/or position of objects.

Abstract: In some examples, a device may include a communication interface configured to exchange signals with another device, and a computing component configured to autonomously calculate a centroid of a plurality of devices of which the device is a part, based at least in part on relative distances between the device and others of the plurality of devices and relative distances among the others of the plurality of devices, and autonomously establish the centroid as a shared secret.

Abstract: In some examples, a device may include an accelerometer configured to provide a measurement of vibration created by relative contact with another device, and a processor, operatively coupled to the accelerometer, configured to: create an encryption key based on, at least, the measurement of the vibration, receive an output encrypted with the encryption key from the another device, and verify the identity of the encryption key by which the output received from the another device is encrypted.

Abstract: In some examples, a device may include a communication interface configured to exchange signals with another device, and a computing component configured to autonomously calculate a centroid of a plurality of devices of which the device is a part, based at least in part on relative distances between the device and others of the plurality of devices and relative distances among the others of the plurality of devices, and autonomously establish the centroid as a shared secret.

Abstract: In some examples, a device may include at least one communication interface configured to exchange signals with another device, and a pairable component configured to: assure the another device of mutual proximity by exchange of at least two progressively increasing locator signals and corresponding acknowledgement signals, receive executable validating code from the another device, execute the validating code, output a self-validating result of executing the validating code, verify pairing with the another device, and generate a secret key to ensure a private exchange of data between the mutually proximate, paired, and validated device and another device.

Abstract: In some examples, a device may include an accelerometer configured to provide a measurement of vibration created by relative contact with another device, and a processor, operatively coupled to the accelerometer, configured to: create an encryption key based on, at least, the measurement of the vibration, receive an output encrypted with the encryption key from the another device, and verify the identity of the encryption key by which the output received from the another device is encrypted.

Abstract: Ceramic heating devices with a three-dimensional ceramic element are disclosed for protecting surfaces from icing. The shape of the three-dimensional ceramic element can be configured to physically match to the three-dimensional profile of the protected surface, allowing for high thermal coupling with the surface. The shape of the three-dimensional ceramic element can also be configured to form an aerodynamic surface typically found on the exterior of aircraft.

Abstract: A hydropyrolysis catalyst and a process using that catalyst are described. The catalyst comprises a support and an active metal component wherein the catalyst is an eggshell type catalyst having the active metal component located in the outer portion of the support.

Abstract: An energy storage system is generally disclosed. An example system includes a flywheel having a substantially cylindrical flywheel portion, and a housing defining a substantially cylindrical cavity configured so as to receive the substantially cylindrical flywheel portion. The flywheel is rotatable in the cavity about a central axis of the flywheel, and an energy exchange device is configured to convert between electrical energy and kinetic energy associated with rotation of the flywheel. The system may also have a magnetic restraint arranged to exert a magnetic restraining force on the flywheel in a direction towards the central axis.