Abstract: A communication frame for an OTFS transmission system includes at least one first-type and at least one second-type block. At least the first-type block includes data signals two-dimensionally arranged along the delay domain and the Doppler domain of which at least one has a superimposed pilot signal. The second-type block includes data signals two-dimensionally arranged along the delay domain and the Doppler domain which may or may not have superimposed pilot signals. At least one second-type block is preceded and followed, in the delay-domain, by first-type blocks, the first-type blocks preceding and following a second-type block having at least one identical data symbol and associated superimposed identical pilot symbol at an identical location in the two-dimensional arrangement. An OTFS transmitter generates and transmits the communication frame, and a receiver uses its properties for compensating oscillator frequency offset and channel estimation.

Abstract: Disclosed herein are systems and methods for privacy-preserving facemask-compliance-level measurement. In an embodiment, a mask-compliance measurement system includes a processor that is configured to generate, from an image of a person, a facial depth image of a region of a face of the person, and to generate facial wavelet descriptors from the facial depth image. The processor is also configured to determine spectral-density values of the wavelet descriptors, and to analyze the spectral-density values to generate a mask-wearing-compliance result for the person. In an embodiment, the analyzing includes using a classification model that is trained to classify sets of spectral-density values with respect to facemask wearing in images from which the spectral-density values were derived.

Abstract: This disclosure relates to the field of 3D extrusion bioprinting, and in particular, to compositions of bioinks including components that are typically non-extrudable or present low printability. The present bioink comprises a rheology modifier, such as a partially crosslinked polyacrylic acid, a crosslinking polymer, and, optionally, one or more additives. The bioink provides for the use of synthetic crosslinking polymers as well as modified or unmodified biopolymers, and exhibits good printability.

Abstract: A sheathed blade assembly for minimizing or preventing contact between the moving interior blade and the exterior sheath. The assembly includes an exterior sheath having a first portion and second portion with an inner lumen therebetween, an interior blade movable within the inner lumen of the exterior sheath, a first pocket within a first surface of the interior blade, and a first ball bearing within the first pocket. The first ball bearing creates a clearance amount between the first surface of the interior blade and the first portion of the exterior sheath. The assembly may also include a second pocket within a second surface of the interior blade for a second ball bearing. The second ball bearing creates a clearance amount between the second surface of the interior blade and the second portion of the exterior sheath. The second pocket is in a staggered configuration relative to the first pocket.

Abstract: A system for adapting at least one parameter of a controller, the system including: processor circuitry; and a non-transitory computer-readable storage medium storing instructions that, when executed by the processor circuitry, cause the processor circuitry to: receive a robot model specification including differentiable robot dynamics, a controller specification including the at least one parameter, and a network condition specification including a non-differentiable discrete communication event; generate a differentiable simulation by: simulating the robot model specification; and transforming the non-differentiable discrete communication event into a continuous differentiable function based on a membership function; and tuning the at least one parameter using gradient-based optimization on the differentiable simulation to improve robot performance under the network condition specification; and output the tuned at least one parameter to configure the controller.

Abstract: A user equipment centric cell including a user equipment (UE) that employs standardized vehicle-to-everything (V2X) messages and that includes at least a roadside unit (RSU) having sidelink (SL) groupcast capability.

Abstract: Various aspects of techniques, systems, and use cases may be used for operating, controlling, programming, or configuring an energy efficient robotic arm. An example technique may include identifying a planned trajectory for a robotic arm, selecting a candidate joint of the robotic arm to lock, and recomputing the planned trajectory to determine a joint-locked trajectory while the candidate joint is locked. The example technique may include outputting a control signal to lock the candidate joint and causing the robotic arm to use the joint-locked trajectory.

Abstract: A quasi-colocation relation is determined at a first user equipment server by a network node in a wireless communication network by: discovering, using sidelink communications, a nearby second user equipment; negotiating at least one common reference signal with the second user equipment; determining, using the at least one common reference signal, a first estimate of at least one large-scale property of a first physical channel; receiving, from the second user equipment, at least a second estimate of said at least one large-scale property of a second physical channel; determining a quasi-colocation relation by comparing the first estimate and the second estimate; and notifying a network node of a quasi-colocation relation between the first user equipment and the second user equipment.

Abstract: Communication between an apparatus and at least one user equipment is facilitated. Quasi-Colocation (QCL) relationship between the apparatus and the UE can be determined in a discovery step. The QCL relationship can be determined by manner of, for example, a QCL-discovery message. The QCL-discovery message can be communicated between the apparatus and the UE. Communication between the apparatus and the UE can be based on direct (e.g., sidelink) communication.

Abstract: Differential Measurement Reporting is performed by a user equipment (UE) in a communication system. The user equipment (UE) includes a transceiver configured to receive quantities representing the quality of the transmission of the communication system to be reported and to measure the quantities to be reported. If more than two measured quality values are to be reported and are within a value set of a predefined codebook of differential values, fewer feedback bits, which are used for representing the measured quality values, are sent from the user equipment (UE), or an increase in resolution of the reported values occurs while maintaining the same number of feedback bits.

Abstract: An inter-DRX Assistance method for operating a user equipment (UE) and network device, of a wireless communication system in a Discontinuous Reception (DRX) mode, the wireless communication system including a plurality of user equipments (UE), and the UE communicating with one or more further user equipments (UEs) by receiving, by the user equipments (UE), at least one Discontinuous Reception (DRX) configuration from one of a plurality of a Discontinuous Reception (DRX) configuration sources, whereby that plurality of Discontinuous Reception (DRX) configurations is configured for the same Media Access Control (MAC) entity in order to reduce the power consumption of the user equipment.

Abstract: Techniques are described for a system document management comprising one or more processors having access to a memory. The system is configured to open an electronic document that is to be electronically signed, the electronic document having an active component connected to an external data source. The system is further configured to, while the electronic document is open, execute the active component to retrieve data from the external data source. The system is further configured to insert the data retrieved from the external data source into a field of the electronic document. The system is further configured to output, for display, a graphical user interface that presents the content of the electronic document to a user device.

Abstract: A component of a system, including: processor circuitry; and a non-transitory computer-readable storage medium including instructions that, when executed by the processing circuitry, cause the processor circuitry to: receive image data of an object captured by a camera; analyze a visual feature of the object based on the received image data; generate illumination patterns based on the analyzed visual feature; and control arrays of light sources integrated into a plurality of fingers of a robotic gripper to project the illumination patterns within a grasp volume defined by the plurality of fingers during object manipulation to enhance detection of the visual feature of the object, wherein each light source in the arrays of light sources is individually controllable.

Abstract: Game-specific screen share features can be provided to viewers of a video game livestream. The viewers can control a themed or adaptive cursor presented to the gamer during gameplay, and can also provide themed or adaptive sentiment-based reactions to the gamer during gameplay. The cursor and reactions can then be surfaced to the gamer a number of ways and can even be tied back into the game execution environment itself.

Abstract: A bidirectional haptic feedback system, including: a flexible membrane configured to be mounted on a handheld controller; sensor-actuator units arranged on the flexible membrane, the sensor-actuator units respectively including a damping mechanism configured to mechanically isolate vibrations between adjacent sensor-actuator units; a control system configured to: generate vibration signals within selected frequency bands within a proximity to a natural resonant frequency range of the sensor-actuator units to drive the actuators of the sensor-actuator units to deliver haptic feedback to a user based on a state of the robot; simultaneously detect user grasp contact and pressure through analysis of back electromotive force (EMF) signals generated by the sensor-actuator units; and adjust robot control parameters dynamically in response to the detected grasp contact and pressure.

Abstract: Described herein are systems and methods for performing optical signal analysis and lesion predictions in ablations. A system includes a catheter coupled to a plurality of optical fibers via a connector that interfaces with a computing device. The computing device includes a memory and a processor configured to receive optical measurement data of a portion of tissue from the catheter. The processor identifies one or more optical properties of the portion of tissue by analyzing the optical measurement data and determines a time of denaturation of the portion of tissue based on the one or more optical properties. A model is created to represent a correlation between lesion depths and ablation times using the time of denaturation, the one or more optical properties, and the predetermined period of time. A predicted lesion depth for a predetermined ablation time is generated using the model.

Abstract: A transport system, including: a plurality of self-lifting wheel units individually controllable and mounted to a transport platform; one or more sensors mounted to the transport platform and configured to detect a floor obstacle, floor elevation change, or floor surface irregularity; a control system operatively connected to the plurality of self-lifting wheel units and the one or more sensors, wherein the control system is configured to: receive floor obstacle, elevation change, or surface irregularity detection data from the one or more sensors; plan and control the plurality of self-lifting wheel units to selectively lift or lower to maintain stability of the transport platform when traversing the floor obstacle, the floor elevation change, or the floor surface irregularity; and regulate movement of the transport platform to traverse the floor obstacle, the floor elevation change, or the floor surface irregularity based the plan and control.

Abstract: Techniques are disclosed to implement a mathematical framework to model a mechanical actuator such as robotic arm and compute the differential kinematics of an end effector represented by a circle in a three-dimensional space, described as a bi-vector of conformal geometric algebra. Additionally, by using a circle to describe the grasping pose on the object, a differential kinematics-based control scheme is implemented to guide the actuator and minimize the error between the end effector circle and the target circle. The circle has 3 degrees of freedom for the center, two degrees for the orientation, and one more for the radius, which may be used to describe the end effector pose, with the differential kinematics-based control scheme law adjusting the position and the orientations simultaneously.

Abstract: A system for generating a three-dimensional (3D) representation of a surface of an object. The system includes a point cloud processor and an object surface representation processor. The point cloud processor is to generate a structured point cloud of the object based on sensor data received from a sensor. The object surface representation processor is to: identify surface nodes in the structured point cloud; and link each surface node with any of its active neighbors to generate a surface net, wherein the linking comprises simultaneously establishing a forward-connectivity-link for a respective surface node to an active neighbor and a reverse-connectivity-link for the active neighbor to the respective surface node.

Abstract: Disclosed herein are devices, systems, and methods for representing a workspace of a robot. The system includes a sensor configured to capture an image of the workspace. The system also includes a processor in communication with the sensor. The processor is configured to convert the image into a point cloud representation of the workspace. The processor is also configured to determine, for at least one point in the point cloud representation, a hash code that relates a task state to a volumetric space associated with the at least one point. The processor is also configured to determine a motion plan for the robot within the workspace based on the hash code and to cause the robot to execute the motion plan.