Abstract: A method of manufacturing a ceramic composite includes: prepregging a plurality of porous fiber cloths, a powder compact, a combination thereof, or additively-manufactured matrix and fibers, with a preceramic polymer composition to form a preform composite body; curing the composite body followed by pyrolyzing the cured composite body to obtain a ceramic composite body; densifying the ceramic composite body by sequentially performing a plurality of densification cycles to obtain a densified ceramic composite body, wherein each densification cycle includes: submerging the ceramic composite body in the preceramic polymer composition to impregnate the ceramic composite body; subjecting the impregnated ceramic composite body to a vacuum; curing the impregnated composite body; and pyrolyzing the impregnated composite body; and subsequently crystallizing the densified ceramic composite body. The preceramic polymer composition comprises a preceramic polymer component, a crosslinker, and a catalyst.

Abstract: A method is disclosed for programming analog-valued weights in a non-volatile memory array using feedback-based estimation and adaptive pulse modulation. The method includes initializing a target weight, applying one or more programming pulses to a memory cell, estimating a weight state of the memory cell based on analog-to-digital conversion, determining a residual error between the estimated weight state and the target weight, and computing a subsequent programming pulse based on the residual error. The subsequent pulse may be adjusted by selecting a programming voltage from a quantized set of levels responsive to the recent weight response dynamics. The programming process may iterate until convergence may be achieved within a defined threshold. The technique supports precise control of conductance programming using closed-loop feedback and may be compatible with pulse-width, amplitude, and polarity modulation schemes.

Abstract: Methods and systems for displaying augmented reality (AR) information at a construction site are described. These involve pro-viding a primary positioning device and at least one auxiliary AR headset at the construction site. The primary positioning device is tracked within the construction site using a positional tracking system and the at least one auxiliary AR headset is tracked relative to the primary positioning device. A relative pose of said auxiliary AR headset and a measured pose of the primary positioning device are used to determine a measured pose of said auxiliary AR headset within a coordinate system representing the construction site. The measured pose of at least the at least one auxiliary AR headset is used to display AR information via said auxiliary AR head-set.

Abstract: A method of fabricating a refractory metal ceramic matrix interpenetrating phase harsh environment capable composite is provided. The method includes forming a reinforcing phase by additive manufacturing and introducing a matrix material to the reinforcing phase. The step of introducing the matrix material may be performed by additive manufacturing or a densification process. The reinforcing phase may be a lattice formed of metal or a ceramic, and the matrix material may be a ceramic or a metal. Alternatively, the reinforcing phase formed by additive manufacturing is a laminate layer, and the matrix material introduced to the reinforcing phase is a laminate layer deposited on the reinforcing phase by additive manufacturing in a plurality of alternating layers. A refractory metal ceramic matrix composite is also disclosed. The refractory metal ceramic matrix composite includes a lattice formed by additive manufacturing, and a matrix material deposited in the lattice.

Abstract: Methods, compositions, and medical kits are useful for treating and preventing multiple sclerosis using 1-(4-(((6-amino-5-(4-phenoxyphenyl)pyrimidin-4-yl)amino)methyl)piperidin-1-yl)prop-2-en-1-one, or a pharmaceutically acceptable salt thereof, according to preferred dosing regimens.

Abstract: Certain examples described herein present a method of configuring a headset for display of a building information model (BUM) at a construction site. In one example, the method includes: determining a pose of the headset using a positioning system; obtaining an image of a two-dimensional marker positioned within the construction site; determining a BIM-to-camera transformation between an origin of a coordinate system used by the building information model and an origin of the coordinate system of the camera based on a location of the two-dimensional marker within the image; determining a camera-to-positioning transformation between the origin of the coordinate system used by the camera and an origin of a coordinate system used by the positioning system; and determining a BIM-to-positioning transformation.

Abstract: In described examples there is a method of matching a design model. In examples, a point cloud representation of a construction site is generated. The point cloud representation is generated using a positioning system that tracks a device such as a headset within the construction site. A building information model is obtained representing at least a portion of the construction site. One or more points in the point cloud representation are compared with the building information model to determine whether the construction site matches the building information model, wherein the point cloud representation is generated dynamically as the device navigates the construction site.

Abstract: Certain examples described herein relate to a mapping system. An example mapping system has a differentiable mapping engine to receive image data comprising a sequence of images captured using one or more camera devices of an object as it navigates an environment and a neural network scene representation comprising a neural network architecture trained to map input coordinate tensors indicating at least a point location in three-dimensional space to scene feature tensors having a dimensionality greater than the input tensors. The neural network scene representation is communicatively coupled to the differentiable mapping engine and the differentiable mapping engine is configured to use the neural network scene representation as a mapping of the environment during operation of the differentiable mapping engine.

Abstract: This patent document provides a conditioning formulation or composition containing a rheology modifying polymer and optionally one or more of a dispersant, a thickener, a gelling agent, a glue or resin, a wetting agent, a buffer, an anti-foam agent, and soil amendments. Also disclosed is the use of the formulation for optimizing the soil or sand surface of a field.

Abstract: This patent document provides a conditioning formulation or composition containing a rheology modifying polymer and optionally one or more of a dispersant, a thickener, a gelling agent, a glue or resin, a wetting agent, a buffer, an anti-foam agent, and soil amendments. Also disclosed is the use of the formulation for optimizing the soil or sand surface of a field.

Abstract: A method of fabricating a refractory metal ceramic matrix interpenetrating phase harsh environment capable composite is provided. The method includes forming a reinforcing phase by additive manufacturing and introducing a matrix material to the reinforcing phase. The step of introducing the matrix material may be performed by additive manufacturing or a densification process. The reinforcing phase may be a lattice formed of metal or a ceramic, and the matrix material may be a ceramic or a metal. Alternatively, the reinforcing phase formed by additive manufacturing is a laminate layer, and the matrix material introduced to the reinforcing phase is a laminate layer deposited on the reinforcing phase by additive manufacturing in a plurality of alternating layers. A refractory metal ceramic matrix composite is also disclosed. The refractory metal ceramic matrix composite includes a lattice formed by additive manufacturing, and a matrix material deposited in the lattice.

Abstract: Certain examples described herein provide a headset for use in construction at a construction site. The headset has an article of headwear, sensor devices for a plurality of positioning systems, a head-mounted display for displaying an augmented reality image of a building information model, and an electronic control system with at least one processor. The at least one processor is configured to obtain a set of transformations that map between the coordinate systems of the plurality of positioning systems. The at least one processor is configured to use the set of transformations and at least one calibrated transformation to convert between the coordinate system of a pose and an extrinsic coordinate system used by the building information model to render an augmented reality image of the building information model relative to the pose of the article of headwear on the head-mounted display.

Abstract: The present disclosure concerns a warning device comprising a warning body having a longitudinal axis and comprising a light-emitting assembly; and a collapsible stand configurable in a compacted configuration and in a warning configuration in which the light-emitting assembly is at least partially visible. The collapsible stand comprises a handle sleeve mounted to and slidable along the warning body and legs pivotably mounted to the handle sleeve, the legs being juxtaposed against the warning body when the collapsible stand is in the compacted configuration to cover the warning body and the legs extending outwardly and downwardly when the collapsible stand is in the warning configuration, the collapsible stand being configurable between the compacted configuration and the warning configuration by sliding the handle sleeve along the warning body. The disclosure also concerns a warning assembly comprising such a warning device and a method of emitting a warning light signal.

Abstract: The invention provides improved methods for determining the structure of RNA molecules with increased sensitivity, improved data quality, reduced ligation bias, and improved read coverage, incorporating the removal of undesired bi-products and ligation using a fast, efficient, and low-sequence bias hybridization-ligation method.

Abstract: A device for holding the trunk lid of a vehicle in an open position, includes an elongated telescopic member adapted to be adjusted in length, a locking system for holding the elongated member in a selected position, and first and second holding mechanisms provided at opposed ends of the elongated member. The first and second holding mechanisms are adapted to be attached to a lower closed loop provided on the trunk sill and to an upper latching mechanism provided on the inside of the trunk lid of the vehicle.

Abstract: Methods, compositions, and medical kits are useful for treating and preventing multiple sclerosis using 1-(4-(((6-amino-5-(4-phenoxyphenyl)pyrimidin-4-yl)amino)methyl)piperidin-1-yl)prop-2-en-1-one, or a pharmaceutically acceptable salt thereof, according to preferred dosing regimens.

Abstract: Techniques are described for the exchange of control signals between a controlled unmanned aircraft (i.e. drone) and a ground control station and for the transmission of communication signals, such as video, from the drone to the ground control station so that the signals are more difficult to intercept or jam. The video signal transmitted from the drone can be an analog RF signal employing one or more of video “scrambling”, RF signal inversion, hopping, usage of a wide frequency range and other techniques. To secure the control signals between the drone and the ground control station, techniques can include hopping, encryption and use of a wide frequency range.