Abstract: Apparatuses, methods, and program products are disclosed for proof of work based authentication. One apparatus includes a processor and a memory that stores code executable by the processor. The code is executable by the processor to determine, by use of the processor, a set of computer-based attributes corresponding to a first device. The code is executable by the processor to compute a proof of work based on the set of computer-based attributes. The code is executable by the processor to transmit the proof of work and the set of computer-based attributes to a second device for authentication based on the proof of work and the set of computer-based attributes.

Abstract: The present disclosure relates to devices and methods for delivery of a ferrofluid to a targeted treatment site, such as delivery of a ferroadhesive to a pathological fistula to occlude the fistula. A device includes a catheter having a lumen and a distal opening. A hollow solenoid is coupled to a distal section of the catheter, and a hollow core of the solenoid allows passage of a ferrofluid through the catheter and through the hollow core so that it may exit past the distal end of the hollow solenoid. The solenoid may be selectively actuated to maintain or control the position of the delivered ferrofluid.

Abstract: A turbine combustor assembly includes a fuel/air mixer assembly having a plurality of fuel/air mixer elements and a fuel injector coupled to the fuel/air mixer assembly. Each of the fuel/air mixer elements includes: a fuel/air mixer body having an internal cavity extending axially between an air inlet and an air outlet; and a prefilmer residing within an interior cavity of the fuel/air mixer body, the prefilmer including an axial inner air flow passage extending coaxially with an axial centerline of the internal cavity of the fuel/air mixer body and a radial fuel injection port into the air flow passage. The fuel injector is arranged to direct fuel into a plurality of the fuel/air mixer elements via the fuel injection port of the prefilmer of each fuel/air mixer element.

Abstract: Embodiments of the present disclosure include a method for controlling a power generation system, the method including: detecting a heat distribution across a component of a power generation system from a thermal output of the component, during operation of the power generation system; calculating a projected heat distribution across the component based on a library of modeling data for the power generation system; calculating whether a difference between the heat distribution and the projected heat distribution exceeds a thermal threshold; adjusting the power generation system in response to the difference exceeding the predetermined threshold, wherein the adjusting includes modifying an operating setting of the power generation system.

Abstract: Embodiments of the present disclosure include a method for controlling a power generation system, the method including: detecting a heat distribution across a component of a power generation system from a thermal output of the component, during operation of the power generation system; calculating a projected heat distribution across the component based on a library of modeling data for the power generation system; calculating whether a difference between the heat distribution and the projected heat distribution exceeds a thermal threshold; adjusting the power generation system in response to the difference exceeding the predetermined threshold, wherein the adjusting includes modifying an operating setting of the power generation system.

Abstract: Embodiments of the present disclosure include a method for controlling a power generation system, the method including: detecting a gauge measurement of an operating parameter while visually monitoring a gauge of the power generation system during operation of the power generation system; calculating an expected value of the operating parameter based on a library of modeling data for the power generation system; calculating whether a difference between the gauge measurement of the operating parameter and the calculated expected value of the operating parameter exceeds a predetermined threshold; and adjusting the power generation system in response to the difference exceeding the predetermined threshold, wherein the adjusting includes one of calibrating the gauge or modifying an operating setting of the power generation system.

Abstract: A upholstered sofa covered by a form fitting upholstery sack where the upholstery sack incorporates a supportive material panel that has integrated support webbing into the material panel. The support webbing comprising a plurality of webbing straps. With the upholstery sack properly positioned on the back rest portion, the supportive material panel is positioned on the front of the back rest portion frame. The material panel with webbing is incorporated as a component of the upholstery sack where the upholstery sack is pre-formed to snugly fit over the back rest portion of a furniture frame. The back rest portion or the frame is inserted into the sack and the material panel with integrated webbing is attached to the frame. Once the material panel is positioned and fastened, the remaining components, for example, the back panels and side panels, of the upholstery sack are attached to the frame at the back rest portion.

Abstract: A layered structure used for detecting incident light includes a substrate having a surface with a high Miller index crystal orientation and a superlattice structure formed over the substrate at the surface. The superlattice structure is aligned to the high Miller index crystal orientation and exhibits a red-shifted long wave infrared response range based on the crystal orientation as compared to a superlattice structure formed over a substrate at a surface with a (100) crystal orientation.

Abstract: An illustrative volumetric capture system accesses a machine learning model associated with bodies of a particular body type, as well as a two-dimensional (2D) image captured by a capture device located at a real-world scene. The 2D image depicts a body of the particular body type that is present at the real-world scene. Using the machine learning model and based on the 2D image, the volumetric capture system identifies a 2D joint location, from a perspective of the capture device, of a particular joint of the body. The volumetric capture system also generates a three-dimensional (3D) reference model of the body that represents the particular joint of the body at a 3D joint location that is determined based on the 2D joint location identified using the machine learning model. Corresponding methods and systems are also disclosed.

Abstract: Described is an image guided radiation therapy (IGRT) apparatus comprising a medical imaging device and a radiation source, wherein the radiation source is provided on a gantry which surrounds the medical imaging device. The apparatus further comprises ducting for directing cool air from a source of cool air to a gap between the gantry and the medical imaging device.

Abstract: Systems, methods and computer program products assess processor performance metrics by monitoring probes constructed using instruction sequences. A first probe value can be determined from execution of a broad spectrum probe in an execution environment. In response to determining that the first probe value is not a first expected probe value, a targeted probe providing a second probe value directed to a subsystem of the execution environment, a feature of the subsystem, or a component of the execution environment is executed. In response to determining that the second probe value is not a second expected probe value, a differential between the second probe value and the second expected probe value can be used to determine that a bottleneck exists in at least one of the subsystem of the execution environment, the feature of the subsystem, or the component of the execution environment.

Abstract: In one embodiment, a removable pneumatic connector, comprises a body having a plurality of bores passing through, each bore surrounded by a sealing member on an inner surface of the body. A plurality of gas lines may be placed within a corresponding bore. A vacuum port is disposed on the inner surface of the body, and an outer seal on the inner surface of the body surrounds the sealing members and the vacuum port. A vacuum line may be placed within the vacuum port, and configured to deliver negative pressure to the vacuum port. A vacuum holding area is created in the volume between the outer seal and each of the sealing members when the inner surface of the body is placed against a substrate. When the vacuum line is activated, a vacuum is created within the vacuum holding area, creating a positive seal between the body and the substrate.

Abstract: A torch igniter includes an auxiliary fuel injector; an ignition source; and an igniter body carrying the auxiliary fuel injector and the ignition source. The igniter body includes an auxiliary combustion chamber having a side wall extending axially from a first end wall to a second end wall. In some examples, at least a portion of the side wall includes a distributed pattern of cooling apertures, with each of the cooling apertures extending obliquely from an outer surface of the side wall to an inner surface of the side wall. In some examples, the second end wall defines a fluid outlet leading to an outlet tube in fluid communication with the primary combustion chamber, at least a portion of the outlet tube including a distributed pattern of dilution apertures.

Abstract: A torch igniter includes an auxiliary fuel injector; an ignition source; and an igniter body carrying the auxiliary fuel injector and the ignition source. The igniter body includes an auxiliary combustion chamber having a side wall extending axially from a first end wall to a second end wall, the side wall defining an interior cavity between the first and second end walls. The igniter body further includes a premixing cup residing within the interior cavity including a cylindrical wall radially surrounding the auxiliary fuel injector and an auxiliary air inlet, the cylindrical wall of the premixing cup protruding axially outward relative to the first end wall of the auxiliary combustion chamber through a portion of the interior cavity to delineate a premixing zone radially inward of the cylindrical wall and a recirculation zone radially outward of the cylindrical wall.

Abstract: A sofa with an upholstered arm panel has an arm frame with a layered composition comprising an underlayment material layer, a fiber material layer positioned on top of and contacting the underlayment material layer, and a covering upholstery material layer positioned on top of and contacting the fiber material layer. The underlayment material layer is comprised a planar sheet of Ethylene-vinyl acetate closed cell foam. The EVA foam extends forwardly on the arm frame to create a forward extending lip. The use of EVA foam reduces the number of structural and cushioning materials, fasteners, and labor currently required in arm panel construction.

Abstract: A upholstered sofa covered by a form fitting upholstery sack where the upholstery sack incorporates a supportive material panel that has integrated support webbing into the material panel. The support webbing comprising a plurality of webbing straps. With the upholstery sack properly positioned on the back rest portion, the supportive material panel is positioned on the front of the back rest portion frame. The material panel with webbing is incorporated as a component of the upholstery sack where the upholstery sack is pre-formed to snugly fit over the back rest portion of a furniture frame. The back rest portion or the frame is inserted into the sack and the material panel with integrated webbing is attached to the frame. Once the material panel is positioned and fastened, the remaining components, for example, the back panels and side panels, of the upholstery sack are attached to the frame at the back rest portion.

Abstract: A turbine combustor assembly includes a fuel/air mixer assembly having a plurality of fuel/air mixer elements and a fuel injector coupled to the fuel/air mixer assembly. Each of the fuel/air mixer elements includes: a fuel/air mixer body having an internal cavity extending axially between an air inlet and an air outlet; and a prefilmer residing within an interior cavity of the fuel/air mixer body, the prefilmer including an axial inner air flow passage extending coaxially with an axial centerline of the internal cavity of the fuel/air mixer body and a radial fuel injection port into the air flow passage. The fuel injector is arranged to direct fuel into a plurality of the fuel/air mixer elements via the fuel injection port of the prefilmer of each fuel/air mixer element.

Abstract: An exemplary three-dimensional (3D) simulation system accesses a two-dimensional (2D) video image captured by a video capture device and that depicts a bounded real-world scene and a real-world object present within the bounded real-world scene. The 3D simulation system accesses respective 3D models of the bounded real-world scene and the real-world object. Based on the 2D video image, the 3D simulation system tracks a spatial characteristic of the real-world object relative to the bounded real-world scene. Based on the tracked spatial characteristic of the real-world object and the 3D models of the bounded real-world scene and the real-world object, the 3D simulation system generates a 3D simulation of the bounded real-world scene within which the real-world object is simulated in accordance with the tracked spatial characteristic of the real-world object. Corresponding methods and systems are also disclosed.

Abstract: A gas turbine combustor assembly includes a primary combustion chamber in fluid communication with a primary fuel injector and a primary air inlet. A torch igniter is carried by the primary combustion chamber, and includes an auxiliary combustion chamber housing comprising a mixing chamber and a throat region converging downstream of the mixing chamber. An air swirler including a plurality of swirl openings surrounding an outlet of an auxiliary fuel injector is coupled to the auxiliary combustion chamber proximate the mixing chamber. An ignition source projects into the mixing chamber of the auxiliary combustion chamber.