Abstract: A buoy corrosion detection system includes a buoy having a double hull section in which the outer hull is designed to corrode and fail prior to the rest of the hull. The double hull section is positioned at the waterline, which is the area most prone to corrosion. As the outer hull corrodes, water passes through the hull and is detected by a moisture detector. The moisture detector then relays a signal that water has entered through the hull, and a signaling circuit then sends a communication signal to the user indicating that the buoy has corrosion. The buoy corrosion detection system leads to an “as-needed” maintenance cycle for buoys.

Abstract: A method for extending a surface penetrating radar (SPR) footprint for performing localization with an SPR system is disclosed. The method may include may include transmitting at least one SPR signal from at least one SPR transmit element. The method may further include receiving a response signal via at least two SPR receive elements, the response signal including, at least in part, a reflection of the SPR signal from an object. The method may also include determining that the object is in a region of interest outside a footprint of the SPR system based on a difference in phase at which the response signal is received at the at least two SPR receive elements. The method may additionally include performing localization of a vehicle using the SPR system based at least in part on the object.

Abstract: Zeolite catalysts and systems and methods for preparing and using zeolite catalysts having the CHA crystal structure are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stable at high reaction temperatures. The zeolite catalysts include a zeolite carrier having a silica to alumina ratio from about 15:1 to about 256:1 and a copper to alumina ratio from about 0.25:1 to about 1:1.

Abstract: A buoy corrosion detection system includes a buoy having a double hull section in which the outer hull is designed to corrode and fail prior to the rest of the hull. The double hull section is positioned at the waterline, which is the area most prone to corrosion. As the outer hull corrodes, water passes through the hull and is detected by a moisture detector. The moisture detector then relays a signal that water has entered through the hull, and a signaling circuit then sends a communication signal to the user indicating that the buoy has corrosion. The buoy corrosion detection system leads to an “as-needed” maintenance cycle for buoys.

Abstract: Catalysts, methods, and systems for treating diesel engine exhaust streams are described. In one or more embodiments, the catalyst comprises a molecular sieve having a silica to alumina ratio (SAR) less than about 30, the molecular sieve including ion-exchanged copper and ion-exchanged platinum. Systems including such catalysts and methods of treating exhaust gas are also provided.

Abstract: A clutch for a lift fan is configured such that in an engaged position, two output clutch plates are in frictional communication with input clutch plates and a load is transferred from an input shaft to an output shaft via the two output clutch plates, the input clutch plates and an output shaft lug key, and in a disengaged position each of the two output clutch plates are axially displaced from input clutch plate. A metallic clip is coupled to the outer periphery of the output clutch plate. The metallic clip defines a key way in the output clutch plate.

Abstract: A structure evaluation system is disclosed. In one implementation, an image of the structure is obtained. The image is analyzed. An annotation is generated for the image for a plurality of specific attributes predictive of a loss risk. The annotation may include a set of fields for the specific attributes. In one example, a trained machine learning model is used to generate the specific attributes. The annotations are aggregated to form a signal indicative of a loss risk. In one example, the signal is a score. In some examples, a recommendation is generated for monitoring or remediating the loss risk.

Abstract: A clutch for a lift fan with input and output shafts on a common rotational axis, connected by disc shaped output clutch plates oriented normal to the axis. A keyway extends radially inward from a mouth at an outer diameter of each output clutch plate to a seat at an inner diameter of the respective clutch plate. At least one output shaft lug key may be positioned in the keyway and extends axially from one output clutch plate to the other output clutch plate, which couples the rotation of the output clutch plates to the rotation the output shaft and allows axial movement of the two output clutch plates relative the output shaft lug key, the output shaft has an outer radial surface and an inner radial surface. At least one input clutch plate positioned axially between the two output clutch plates and rotationally fixed to the input shaft.

Abstract: This system includes a concrete identification technology that is used in taking, testing, monitoring, and labeling concrete samples or members using custom labels called a tag. This tag comprises a series of corresponding labels, one for the outside of the form, and on for the inside of the form that becomes part of the concrete sample. These tags are physically bonded to the concrete specimen with only minimal impact on its shape and properties. In some embodiments the tags will contain a hook-and-loop or fiber type surface texture (protrusions) which is placed in the form with the protrusions facing the fresh concrete. The tag can also contain electronic circuitry to gather and track information about the concrete and the surrounding environment. This will eliminate the need to relabel the samples after demolding while also measuring a number of other parameters about the concrete and its performance.

Abstract: A clutch for a lift fan comprises at least one output shaft lug key positioned in a keyway of at least two output clutch plates and extending axially from one to the other of the two output clutch plates. The output shaft lug key couples the rotation of the output clutch plates to the rotation an output shaft and allows axial movement of the two output clutch plates relative the output shaft lug key. The width of an inner surface of the output shaft lug key varies along the axial length as a function of the proximity to a home axial position of each of the output clutch plates when in the disengaged position.

Abstract: A method and system for recommending a size of a wearable item uses a data set of wearable items, in which the data for each wearable item comprises a size and, for each size, one or more additional parameters related to the fit or feel of the item. A processing device receives a selection of one of the wearable items and a size for the selected wearable item from a user, accesses the data set to analyze the one or more additional parameters for the selected item in the selected size, and prompts the user to provide personalized sizing information. Based upon the personalized sizing information, which can include primary and secondary sizing information, the processing device provides a recommended size in the wearable item for the user. Additionally, the processing device can determine if the wearable item runs true to a standard size and, if not, adjust the recommended size accordingly.

Abstract: Systems and methods allow flyers to determine which airport lounges they may access. A flyer specifies an airport and access rules for lounges at the airport are applied to user data of the flyer to identify accessible lounges. A listing of the identified lounges is then displayed to the flyer. Systems and methods further allow management of airport lounge inventory. Inventory can be managed to increase occupancy, as well as to evenly distribute flyers within and across airport lounges.

Abstract: Systems and methods allow flyers to determine which airport lounges they may access. A flyer specifies an airport and access rules for lounges at the airport are applied to user data of the flyer to identify accessible lounges. A listing of the identified lounges is then displayed to the flyer. Systems and methods further allow management of airport lounge inventory. Inventory can be managed to increase occupancy, as well as to evenly distribute flyers within and across airport lounges.

Abstract: The invention provides a catalyst composition, including a mixture of catalytically active particles and a magnetic material, such as superparamagnetic iron oxide nanoparticles, capable of inductive heating in response to an applied alternating electromagnetic field. The catalytically active particles will typically include a base metal, platinum group metal, oxide of base metal or platinum group metal, or combination thereof, and will be adapted for use in various catalytic systems, such as diesel oxidation catalysts, catalyzed soot filters, lean NOx traps, selective catalytic reduction catalysts, ammonia oxidation catalysts, or three-way catalysts.

Abstract: A clutch for a lift fan is configured such that in an engaged position, two output clutch plates are in frictional communication with input clutch plates and a load is transferred from an input shaft to an output shaft via the two output clutch plates, the input clutch plates and an output shaft lug key, and in a disengaged position each of the two output clutch plates are axially displaced from input clutch plate. A metallic clip is coupled to the outer periphery of the output clutch plate. The metallic clip defines a key way in the output clutch plate.

Abstract: A system for recommending a size of a wearable item implements a method that includes identifying a reference wearable item and a size for the reference wearable item. The system accesses a wearable item database and retrieves a three-dimensional model of the reference wearable item. The system also receives, via a user interface, a functional requirement. The system accesses the wearable item database and identifies set of candidate objects, each of which satisfies the functional requirement. Based on the size of the reference wearable item, the system will determine a size for each of the candidate objects. The system will select at least one of the plurality of candidate objects as a recommended object and presents each recommended object and the size of each recommended object to a user.

Abstract: Described herein are various principles for operating transfer protocols using adaptive flow control techniques. In accordance with some of these principles, a client may adaptively negotiate with a server regarding a window size to use when communicating datagrams using a connectionless content unit transfer protocol like the Trivial File Transfer Protocol (TFTP). In some implementations, a client may inform a server whether to increase or decrease a window size. In these implementations, the client may increase the window size upon determining that a previous window size has led to successful transfer of content without any loss of datagrams and the client may decrease the window size upon detecting a loss of a datagram. Because of the limited resources available in some environments in which these techniques may be used, in some implementations a window size may be increased by small amounts but may be decreased drastically upon detecting a loss.

Abstract: A method for extending a surface penetrating radar (SPR) footprint for performing localization with an SPR system is disclosed. The method may include may include transmitting at least one SPR signal from at least one SPR transmit element. The method may further include receiving a response signal via at least two SPR receive elements, the response signal including, at least in part, a reflection of the SPR signal from an object. The method may also include determining that the object is in a region of interest outside a footprint of the SPR system based on a difference in phase at which the response signal is received at the at least two SPR receive elements. The method may additionally include performing localization of a vehicle using the SPR system based at least in part on the object.

Abstract: A method for determining surface characteristics is disclosed. The method may include transmitting a surface penetrating radar (SPR) signal towards a surface from a SPR system. The method may also include receiving a response signal at the SPR system. The response signal may include, at least in part, a reflection of the SPR signal from a surface region associated with the surface. The method may further include measuring at least one of an intensity and a phase of the response signal. The method my additionally include determining, based at least in part on the at least one of the intensity and the phase of the response signal, a surface characteristic of the surface.

Abstract: A method and a surface penetrating radar (SPR) system for localization of a vehicle are disclosed. The method includes transmitting a radar signal having a first frequency into a subsurface region adjacent to a vehicle. A first set of SPR images of a first subsurface volume within the subsurface region is acquired and location data for the vehicle are determined from the first set of SPR images. A second radar signal having a frequency that is greater than the first frequency is transmitted into the subsurface region and a second set of SPR images of a second subsurface volume within the subsurface region is acquired. The second subsurface volume at least partially overlaps the first subsurface volume. Location data are determined from the second set of SPR images at a greater resolution than the location data determined from the first set of SPR images.