Abstract: An example method to facilitate online collaboration includes granting access to a collaboration space to multiple client devices, each associated with a corresponding one of multiple users, the multiple users including a first user and a second user. The method includes receiving input from the first user to create a first set of graphical objects in the collaboration space. The method includes receiving input from the second user to create a second set of graphical objects in the collaboration space. The method includes applying different visual attributes to graphical objects authored by different users to visually identify an author or creator of each graphical object such that all graphical objects of the first set of graphical objects have a first visual attribute and all graphical objects of the second set of graphical objects have a second visual attribute that is different than the first visual attribute.

Abstract: A method of forming z-channels in a fibrous ceramic preform includes mounting the preform in a tooling assembly, the tooling assembly comprising a first fixture and a second fixture, heating the preform mounted in the tooling assembly to a temperature above a glass transition temperature of a polymer binder within the preform to induce a softened state of the polymer binder, inserting a plurality of needles sequentially through respective first holes in the first fixture, the preform, and respective corresponding second holes in the second fixture, and removing the plurality of needles leaving behind a corresponding plurality of z-channels in the preform.

Abstract: A method of fabricating a fibrous ceramic preform includes forming a plurality of coated ceramic tows by introducing a polymeric composition to each of a plurality of ceramic tows, and dispersing and stabilizing each of the plurality of ceramic tows such that a coating of a first polymer binder forms on individual filaments of respective ones of the plurality of ceramic tows, incorporating the plurality of coated ceramic tows into a ceramic fabric, applying a tackifier composition comprising a second polymer binder and a second solvent to the ceramic fabric, and incorporating the ceramic fabric into the preform. The first polymer binder is insoluble in the second solvent.

Abstract: An autonomous driving system comprising: an image encoder configured to receive video input data, said video input data comprising a plurality of time-varying image frames, wherein the image encoder is further configured to encode the image frames as a sequence of input tokens; a pre-trained world model having a set of pre-trained world model weights, the world model being configured to receive the sequence of input tokens and to generate therefrom a world state based on said sequence, wherein the world state comprises an implicit representation of candidate future events; a driving decoder configured to receive the world state from the world model and to generate in a single forward pass a driving plan based on the implicit representation of candidate future events.

Abstract: A system for additive manufacturing a component includes the component configured to be additively manufactured using powder bed fusion. The component includes a first geometry that is different than a second geometry, and the first geometry and the second geometry are configured to create a thermal gradient along the component. The system includes a thermal management structure defined proximate the component. The thermal management structure has a first structure geometry that is different than a second structure geometry. The first structure geometry is defined proximate the first geometry and the second structure geometry is defined proximate the second geometry. The thermal management structure is configured to be additively manufactured with the component substantially simultaneously to reduce the thermal gradient along the component.

Abstract: A method of fabricating a fibrous ceramic preform includes impregnating a plurality of individual ceramic tows with a first polymer binder, incorporating the plurality of impregnated ceramic tows into a ceramic fabric, applying a solution comprising a second polymer binder and a second solvent to the ceramic fabric, and incorporating the ceramic fabric into the preform. The first polymer binder is insoluble in the second solvent.

Abstract: Systems and methods of generating a three-dimensional (3D) reconstruction of a scene or environment surrounding a user of a spatial computing system, such as a virtual reality, augmented reality or mixed reality system, using only multiview images comprising, and without the need for depth sensors or depth data from sensors. Features are extracted from a sequence of frames of RGB images and back-projected using known camera intrinsics and extrinsics into a 3D voxel volume wherein each pixel of the voxel volume is mapped to a ray in the voxel volume. The back-projected features are fused into the 3D voxel volume. The 3D voxel volume is passed through a 3D convolutional neural network to refine the and regress truncated signed distance function values at each voxel of the 3D voxel volume.

Abstract: A method of forming a ceramic matrix composite includes preparing a plurality of fibrous ceramic plies by applying a binder solution loaded with ceramic particles to each of a first subset of plies, and applying the binder solution without ceramic particles to each of a second subset of plies. The method further includes arranging the plurality of plies to form a preform with a gradient along a thickness direction of the preform by stacking the first subset of plies to form a first zone of the preform, and stacking individual ones of the second subset of the plies on both sides of the first zone to form a second zone on each side of the first zone. Loading of the ceramic particles is higher in the first zone than in the second zones. The method further includes densifying the preform with a ceramic matrix.

Abstract: A system for forming a braided preform includes a mandrel having a rotational axis, the mandrel being translatable along and rotatable about the rotational axis, a radial braider for winding fibers onto the mandrel to form a braided layer, an applicator for applying a polymer binder to the braided layer while mounted on the mandrel, and a debulking tool for debulking the braided layer while mounted on the mandrel.

Abstract: A method of fabricating a tooling fixture suitable for use in infiltrating a fibrous preform includes generating a model of the tooling fixture, the model being conformal and complementary to a geometry of the fibrous preform, additively manufacturing the tooling fixture by extruding a carbon-containing ink in a layer-by-layer manner, and consolidating the extruded carbon-containing ink to form a consolidated tooling fixture.

Abstract: A gas turbine engine component includes a wall that is formed of a ceramic matrix composite (CMC) that has ceramic fiber plies disposed in a ceramic matrix. The component has a sensor section in which a bracket is bonded on the wall for holding a sensor. The bracket is formed of a material selected from the group consisting of the CMC, graphite, and combinations thereof.

Abstract: Systems and methods of generating a three-dimensional (3D) reconstruction of a scene or environment surrounding a user of a spatial computing system, such as a virtual reality, augmented reality or mixed reality system, using only multiview images comprising, and without the need for depth sensors or depth data from sensors. Features are extracted from a sequence of frames of RGB images and back-projected using known camera intrinsics and extrinsics into a 3D voxel volume wherein each pixel of the voxel volume is mapped to a ray in the voxel volume. The back-projected features are fused into the 3D voxel volume. The 3D voxel volume is passed through a 3D convolutional neural network to refine the and regress truncated signed distance function values at each voxel of the 3D voxel volume.

Abstract: A method of forming a ceramic matrix composite includes arranging a plurality of ceramic fibers into a preform, mounting the preform within a tooling fixture, perforating the preform to form a plurality of z-channels, each of the plurality of z-channels extending completely through a thickness of the preform, pushing a pin array against a surface of the preform through infiltration holes in the tooling fixture to apply a compressive force on the preform, and subsequently, removing the pin array from the surface of the preform. The pin array includes a plurality of pins extending from a backplate. Each of the plurality of pins is aligned with a respective infiltration hole of the tooling fixture.

Abstract: Systems and method for managing airport lounges is described. In one non-limiting example, a system is configured to track a location of various client devices within a particular airport lounge based on detecting a wireless connection between the client devices and a wireless network for a predefined area of the particular airport lounge. The system estimates a stay length for each of the client devices within the particular airport lounge and determines an available capacity for the airport lounges. An access request is received from an airport lounge application executed on a client device. A subset of the plurality of airport lounges are determined to be accessible for a user of the client device. The subset of the plurality of airport lounges is communicated to the client device.

Abstract: A gas turbine engine component includes a wall that is formed of a ceramic matrix composite (CMC) that has ceramic fiber plies disposed in a ceramic matrix. The component has a sensor section in which a bracket is bonded on the wall for holding a sensor. The bracket is formed of a material selected from the group consisting of the CMC, graphite, and combinations thereof.

Abstract: A fixture for processing a ceramic matrix composite article includes first and second tool segments that each have an exterior side and an interior side. The interior side has a border mate face, and the interior side of the first tool segment faces the interior side of the second tool segment such that the border mate faces align and circumscribe a working region for holding a fiber preform that is to be coated with a ceramic material. The tool segments each having an array of through-holes that open to the working region to permit inflow of gaseous precursor into the working region. A seal circumscribes the working region and blocks a gap between the border mate faces to limit inflow of the gaseous precursor through the gap into the working region.

Abstract: A portable steam generator includes a power source in a housing, a water tank in the housing, a heating element in the housing and configured to heat water in the water tank to produce steam using power from the power source, and a track on the housing configured to support the portable steam generator in an installation position and allow manual removal from the installation position. A pre-plumbed integrated bathroom panel includes a plumbing inlet configured to provide water to the panel, a water outlet connected to the plumbing inlet, a steam outlet connected to the plumbing inlet and a heating element, a sanitizing outlet connected to the plumbing inlet and an additive generator, valves for directing water from the plumbing inlet to the at least one water outlet, the at least one steam outlet, and the at least one sanitizing outlet, and a controller configured to operate at least the plurality of valves.

Abstract: A coated fiber structure for use in a ceramic matrix composite comprises a fiber and an interface coating arrangement applied to and circumscribing the fiber. The interface coating arrangement comprises a first boron nitride layer, a silicon carbide layer extending coaxially with and in direct contact with the first boron nitride layer, and a second boron nitride layer on a side of the silicon carbide layer opposite the first boron nitride layer. The thickness of the silicon carbide layer ranges from 100 nm to 500 nm, and an RMS roughness of the silicon carbide layer is less than 20 nm.

Abstract: Methods, systems, and computer programs are presented for implementing a multi-function control element in a Graphical User Interface (GUI). The method includes responsive to a cursor being away from a control element, present the control element in a compact state in the Graphical User Interface (GUI) within a display. The method also includes responsive to the cursor being over the control element, present the control element in an expanded state. The method includes responsive to receiving the selection of the option and determining the cursor is away from the control element, return the control element to the compact state from the expanded state.

Abstract: An example method to facilitate online collaboration includes granting access to an editable collaboration space to multiple users. The method also includes dividing the users into subgroups including at least a first subgroup and a second subgroup. In addition, the method includes assigning the subgroups to different virtual breakout rooms in the editable collaboration space, including assigning users in the first subgroup to a first virtual breakout room and assigning users in the second subgroup to a second virtual breakout room that is different than the first virtual breakout room. Further, the method includes populating each virtual breakout room with common initial content obtained from a virtual common room, the common initial content being the same in each virtual breakout room.