Abstract: An package and related methods are disclosed. The package may include an antenna, an insert made of low-loss material, and a mold, wherein the mold directly contacts and surrounds at least a portion of the insert, wherein the antenna is formed of conductive material disposed at least in part on a surface of the insert.

Abstract: Heat recovery steam generators (HRSGs) including components and systems for reducing thermal stress experienced by manifolds within the HRSGs are disclosed. The HRSG may include a manifold receiving a working fluid of the HRSG, a plurality of piping links in fluid communication with the manifold, and an enclosure surrounding the manifold and the plurality of piping links. The HRSG may also include at least one thermal element positioned within the enclosure. The thermal element(s) may surround the manifold. Additionally, or alternatively, the HRSG may include a supplemental heating system in fluid communication with an interior of the enclosure. The supplemental heating system may include a heater for heating fluid (e.g., air), and an inlet conduit in fluid communication with and positioned downstream of the heater. The inlet conduit may be formed through the enclosure to provide the heated fluid to the interior of the enclosure.

Abstract: The invention(s) described are configured to process sensor data in order to optimize or otherwise improve training of users for achievement of goals in relation to performing an activity. The invention(s) can also iteratively adapt training in a personalized manner, with assessment of training results and subsequent modification of training regimens, in order to provide improved alignment between users and their goals. Such iteration can drive interventions provided to users throughout the course of training, and allow the system to iteratively develop better and more precise interventions (e.g., through manual means, through machine learning models with generated training and test data). Such iteration, with large datasets applied to populations of users can also increase the breadth of user states that the can be addressed, with respect to provided interventions, and improve rates at which interventions are provided.

Abstract: A method for aligning and joining a first structure to a second structure in an aircraft is provided. A spacer system having a shape memory alloy is positioned in a gap between the first structure and the second structure. The shape memory alloy is initially in a cooled state. A temperature of the shape memory alloy is increased such that the shape memory alloy changes from the cooled shape to a heated shape to fill the gap and apply a load to hold the first structure in place relative to the second structure. Additional processes may then be performed to join the first structure to the second structure.

Abstract: A bleed air heat ejector includes a housing defining an inner passage extending in an axial direction from an inlet of the housing to an outlet of the housing, wherein the inlet is configured to channel ambient air into the housing, and wherein the outlet is configured to channel mixed heated and ambient air out of the housing. A dispenser is mounted in the housing between the inlet and the outlet. The dispenser includes an inner chamber configured to receive heated air from a bleed line. The dispenser includes a plurality of apertures therein for issuing heated air from the inner chamber into the inner passage of the housing to form a flow of mixed ambient and bleed air. The apertures of the inner chamber can be angled primary jets, vortex generators can be included, and/or secondary jets can be included to promote mixing of bleed and ambient air.

Abstract: A fixation device. At least one example embodiment is a bone anchor comprising: a proximal head; a bollard coupled to the proximal head; a first barb coupled to the bollard, the first barb extends outward a first distance measured perpendicularly from an anchor central axis, the first distance greater than half the transverse dimension of the bollard, and the first barb extends outward at a first radial from the anchor central axis; and a second barb coupled to the first barb, the second barb extends outward a second distance measured perpendicularly from the anchor central axis, the second distance greater than half the transverse dimension of the bollard, and the second barb extends outward at a second radial from the anchor central axis, the second radial at a second rotational orientation at least 36 angular degrees from the first radial.

Abstract: Propulsion apparatus for an aquatic vessel comprises an aerodynamic body which extends along a longitudinal axis between first and second ends and in a transverse direction between a leading edge and trailing edge. The aerodynamic body has one or more external wind-receiving surfaces which extend between the leading edge and the trailing edge, thereby defining an aerodynamic profile of the aerodynamic body in cross-section substantially perpendicular to the longitudinal axis. The propulsion apparatus further comprises at least one air vent and at least one air flow generator configured to expel air through the at least one air vent. The at least one air vent and/or the at least one air flow generator are configured to direct expelled air across at least a portion of the one or more or more external wind-receiving surfaces.

Abstract: A system for determining DC leakage current flowing through an electrically insulating structure in a high voltage direct current power system is provided. The DC leakage current is a composite DC current. The insulating structure is operatively coupled to at least an overhead energized DC electrical line. The system further includes a direct current meter adapted to be electrically coupled to at least the insulating structure. The meter includes a waveform separator. The separator is configured to receive and separate the composite DC current into a corresponding direct current (DC) and an alternating current (AC) component. The separator further includes at least one comparator which is configured to produce at least one corresponding digital signal from the AC component; and a processor. The processor receives and analyzes the at least one corresponding digital signal and the DC component to determine a resultant leakage current flowing through the insulating structure.

Abstract: An apparatus may include one or more segmented piezoelectric micromechanical ultrasonic transducer (PMUT) elements. Each segmented PMUT element may include a substrate, an anchor structure disposed on the substrate and a membrane disposed proximate the anchor structure. The membrane may include a piezoelectric layer stack and a mechanical layer. The anchor structure may include boundary portions that divide the segmented PMUT element into segments. Each segment may have a corresponding segment cavity. The boundary portions may correspond to nodal lines of the entire membrane. The membrane may include a membrane segment disposed proximate each segment cavity. The membrane may be configured to undergo one or both of flexural motion and vibration when the segmented PMUT element receives or transmits signals.

Abstract: A gas turbine exhaust assembly includes an exhaust flow path configured to receive an exhaust flow from a gas turbine engine, the exhaust flow path defined by an inner hub and a radially outer wall. The gas turbine exhaust assembly also includes a plurality of vanes circumferentially spaced from each other and operatively coupled to the radially outer wall of the exhaust flow path, each of the plurality of vanes extending only partially toward the inner hub and terminating at an inner end of the vanes, the inner end defining an open portion.

Abstract: A method is disclosed for supplying air conditioned air to a residence or building interior. The method entails positioning a heat and mass exchanger to discharge conditioned air into the residence or building interior. Further, a rotatable desiccant wheel dehumidifier in positioned in fluid communication with the h 5 eat and mass exchanger. Supply air is received and treated in the dehumidifier, thereby supplying dry air to the heat and mass exchanger and exhausting hot humid air. The heat and mass exchanger is positioned and configured to received dry air from the dehumidifier and supply cooler dry air to the residence or building interior, or other target environment. A system is also disclosed for operating the described air supplying or air conditioning method.

Abstract: Conductivity probe fluid property measurement systems and related methods are disclosed herein. An example apparatus includes a flow meter and a fluid conduit to provide a flow path for a fluid relative to the flow meter. The example apparatus includes a conductivity probe coupled to the fluid conduit to generate brine conductivity data of the fluid during flow of the fluid through the fluid conduit. The example apparatus includes a processor to modify fluid flow data generated by the flow meter based on the brine conductivity data.

Abstract: Methods of tissue repair. At least one example method includes: pulling a tissue in place over a bone location; abutting a distal end of a guide tool against the tissue at a first location, and driving a first bone anchor through a delivery tube of the guide tool, through the tissue, and into the bone at the first location, the first bone anchor coupled to a first suture line; abutting the distal end of the guide tool against the tissue at a second location displaced from the first location, and then driving a second bone anchor through the delivery tube, through the tissue, and into the bone at the second location, the second bone anchor associated with the first suture line; withdrawing the guide tool away from the tissue; and tightening the first suture line to create a first suture over the tissue.

Abstract: A variable area engine inlet of a helicopter is provided and includes first inlet portions disposed to face one another in opposite directions and at a distance from one another and second inlet portions extending between the first inlet portions and being disposed to face one another in opposite directions and at a distance from one another. The first and second inlet portions define a capture area and at least one or both of the first and second inlet portions include a movable portion disposed to occupy and move between first and second positions. The first position is associated with a non-constricted condition of the capture area and the second position is associated with a constricted condition of the capture area.

Abstract: Fixation device cartridges. At least one example embodiment is a cartridge including: a first tube; a second tube parallel to first tube; a first spacer coupled to the first tube and the second tube such that slots of the first and second tubes face each other; a second spacer coupled to the first tube and the second tube, the first and second spacers defining a suture volume between the slots of the first and second tubes, and the slot of the first tube and the slot of the second tube open into the suture volume; a first bone anchor disposed within the first tube, a first suture line associated with the first bone anchor and extending through the slot; and a second bone anchor disposed within the second tube and coupled to the first suture line.

Abstract: A fixation device. At least one example embodiment is a bone anchor comprising: a proximal head; a bollard coupled to the proximal head; a first barb coupled to the bollard, the first barb extends outward a first distance measured perpendicularly from an anchor central axis, the first distance greater than half the transverse dimension of the bollard, and the first barb extends outward at a first radial from the anchor central axis; and a second barb coupled to the first barb, the second barb extends outward a second distance measured perpendicularly from the anchor central axis, the second distance greater than half the transverse dimension of the bollard, and the second barb extends outward at a second radial from the anchor central axis, the second radial at a second rotational orientation at least 36 angular degrees from the first radial.

Abstract: Guide tools for installation of fixation devices. At least one example embodiment includes: a delivery tube, the delivery tube defines a slot that runs from the distal end to the proximal end; a guide tube coupled to the delivery tube; and a handle coupled to the proximal end of the delivery tube and coupled to the proximal end of the guide tube. The handle may include a first channel into an interior of the delivery tube through the slot, and a receptacle in operational relationship to the delivery tube and the first channel.

Abstract: An ultrasonic sensor pixel includes a substrate, a piezoelectric micromechanical ultrasonic transducer (PMUT) and a sensor pixel circuit. The PMUT includes a piezoelectric layer stack including a piezoelectric layer disposed over a cavity, the cavity being disposed between the piezoelectric layer stack and the substrate, a reference electrode disposed between the piezoelectric layer and the cavity, and one or both of a receive electrode and a transmit electrode disposed on or proximate to a first surface of the piezoelectric layer, the first surface being opposite from the cavity. The sensor pixel circuit is electrically coupled with one or more of the reference electrode, the receive electrode and the transmit electrode and the PMUT and the sensor pixel circuit are integrated with the sensor pixel circuit on the substrate.

Abstract: The disclosure relates to a glass-based antenna array package. In an aspect, such a glass-based antenna array package includes a single glass substrate layer, one or more antennas attached to a first side of the glass substrate layer, at least one semiconductor device attached to a second side of the glass substrate layer, and a first photoimageable dielectric layer adhered to the second side of the glass substrate layer and encapsulating the at least one semiconductor device. A method of manufacturing the same is also disclosed.

Abstract: Methods of tissue repair. At least one example method includes: pulling a tissue in place over a bone location; abutting a distal end of a guide tool against the tissue at a first location, and driving a first bone anchor through a delivery tube of the guide tool, through the tissue, and into the bone at the first location, the first bone anchor coupled to a first suture line; abutting the distal end of the guide tool against the tissue at a second location displaced from the first location, and then driving a second bone anchor through the delivery tube, through the tissue, and into the bone at the second location, the second bone anchor associated with the first suture line; withdrawing the guide tool away from the tissue; and tightening the first suture line to create a first suture over the tissue.