Abstract: A display apparatus is provided, which includes a USB Type-C connector, display panel, a multiplexing circuit, a switch circuit, and a display controller. The USB Type-C connector is connected to a portable device, wherein a USB signal between the display apparatus and the portable device includes an image-transmission channel and a data-transmission channel. The multiplexing circuit separates the image-transmission channel from the data-transmission channel. The display controller controls a display mode of the display panel. In response to the display panel being in a first display mode, the display controller transmits a control signal to the switch circuit to control the multiplexing circuit to switch to a first operation mode. In response to the multiplexing circuit being in the first operation mode, the portable device acts as a host terminal in the image-transmission channel, and acts as a device terminal in the data-transmission channel.

Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (PMI) feedback, wherein the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook. In one embodiment, the first codebook comprises at least a first precoding matrix constructed with a first group of adjacent Discrete-Fourier-Transform (DFT) vectors. In another embodiment, the first codebook comprises at least a second precoding matrix constructed with a second group of uniformly distributed non-adjacent DFT vectors.

Abstract: A semiconductor structure and a semiconductor device are provided. The semiconductor includes a substrate, a seed layer on the substrate, a buffer layer on the seed layer, a back barrier layer with a V-group element polarity on the buffer layer, a channel layer on the back barrier layer, and a front barrier layer on the channel layer.

Abstract: A rotation joint structure includes a fixed joint, a movable joint, a first limit member, and a second limit member. The fixed base has a locking groove. The movable joint is pivotally connected with the fixed joint. The movable joint has a first slideway and a second slideway connected to each other. The first limit member is movably mounted in the first slideway. The second limit member is movably mounted in the second slideway. When the second limit member is locked in the locking groove, and the first limit member stops the second limit member, the movable joint is locked and cannot be rotated. Thus, the movable joint is disposed at a two-stage locking state.

Abstract: The present disclosure provides a breathing assist device for use in a mask. The breathing assist device may include an air pump, a connecting tube, and a fixing member. A first end of the connecting tube may be disposed on an inner surface of the mask by the fixing member, and a second end of the connecting tube may be connected to the air pump.

Abstract: An apparatus includes a processor and a machine-readable medium having program code executable by the processor to cause the apparatus to determine a first parameter based on a walk force of a drill bit. The program code also includes instructions to generate a whirl index value that comprises a ratio of drilling parameters, wherein at least one parameter of the ratio of drilling parameters is the first parameter. Based on a determination that the whirl index value exceeds a whirl index threshold, the program code includes instructions to determine that a drilling operation induces backward whirl, wherein the drilling operation is characterized by the drilling parameters.

Abstract: A method, a computer program product, and a system for subgraph guided knowledge graph question generation. The method includes inputting a knowledge graph subgraph and a target answer into a long short-term memory encoder. The method also includes producing embeddings relating to the nodes and the edges. The method includes indicating the embeddings associated with the target answer. The method includes applying a graph neural network encoder computation in an iterative manner to the embeddings, with updated embeddings produced by the GNN encoder acting as initial values that are applied to the GNN encoder for a next iteration, until final state embeddings are produced. The method includes computing a graph-level embedding based on the final state embeddings and computing, by a recurrent neural network decoder, a question relating to the target answer and the knowledge graph subgraph using the graph-level embedding.

Abstract: A foldable cushion includes a cushion mechanism and a connecting mechanism. The cushion mechanism includes a seat unit and a back unit. The seat unit and the back unit are juxtaposed and movable relative to each other along a transverse folding line. The connecting mechanism includes a first endless cord and a second endless cord. The first endless cord and the second endless cord respectively extend through the transverse folding line and are flexibly arranged on the seat unit and the back unit. When the seat unit and the back unit are moved relative to the transverse folding line, the first endless cord and the second endless cord are stretched, so that the seat unit and the back unit are positioned at an expanded state by the elastic force of the first endless cord and the second endless cord.

Abstract: A method of forming a semiconductor structure includes: a substrate is provided, the substrate at least comprising a conducting layer; a bottom supporting layer and a stacking structure being formed on a top surface of the substrate, the stacking structure including a sacrificial layer and a supporting portion that are sequentially stacked and formed; the stacking structure and the bottom supporting layer are partially etched to expose the conducting layer to form a through hole; the supporting portion of a partial width exposed from a sidewall of the through hole is laterally etched to form an air gap; a protective layer filling the air gap is formed; a lower electrode electrically connected with the conducting layer is formed on the sidewall of the through hole and a sidewall of the protective layer; the sacrificial layer is removed.

Abstract: Disclosed is a column value-based separate authorization method for statistical list operations, said method comprising a step of authorizing a statistical list operation and a step of selecting a grantee, said step of authorizing a statistical list operation comprising the following steps: S1: selecting a statistical list needing authorization; S2: selecting a column needing authorization in the statistical list, the selected column being a column determined by selection or determined automatically; S3: authorizing the operation for statistical data corresponding to all the column values in the selected column. The present invention enables separate authorization of the operation permissions for the statistical data in the statistical list according to the column values; one statistical list can meet different actual usage requirements after the authorization of different statistical data operation permissions.

Abstract: An optical lens, in order from an object side to an image-forming side, includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, respectively having negative, negative, positive, positive, negative, positive, positive and negative refractive power. The curvature radius of the object-side surface of the first lens is greater than the curvature radius of the image-side surface of the first lens; the image-side surface of the eighth lens has an effective radius r and a vertex point, H is a distance between the vertex point and the optical axis, the image-side surface of the eighth lens intersects with the optical axis at an intersection point, d is a distance between a projected position of the vertex point on the optical axis and the intersection point, and |r/d|?30 and/or |r/H|?2.

Abstract: A preparation method of separation membrane is provided. First, a polyimide composition including a dissolvable polyimide, a crosslinking agent and a solvent is provided. The dissolvable polyimide is represented by formula 1: wherein B is a tetravalent organic group derived from a tetracarboxylic dianhydride containing aromatic group, A is a divalent organic group derived from a diamine containing aromatic group, A? is a divalent organic group derived from a diamine containing aromatic group and carboxylic acid group, and 0.1?X?0.9. The crosslinking agent is an aziridine crosslinking agent, an isocyanate crosslinking agent, an epoxy crosslinking agent, a diamine crosslinking agent, or a triamine crosslinking agent. A crosslinking process is performed on the polyimide composition. The polyimide composition which has been subjected to the crosslinking process is coated on a substrate to form a polyimide membrane. A wet phase inversion process is performed on the polyimide membrane.

Abstract: The present disclosure generally pertains to green oxidizer compositions and method of synthesizing and using the same. Such green oxidizers are stable, may be used in conventional bipropellant thrusters, including, but not limited to LDACS applications, and offer several benefits over conventional oxidizers with respect to toxicity and/or corrosion. The present disclosure also relates to methods of synthesizing poly-nitrated oxetane, a green oxidizer, in an Argon-rich environment.

Abstract: The present disclosure relates to methods and associated systems for maintaining energy storage devices positioned in a device-exchange station. The method includes, for example, (1) periodically sending, by the device-exchange station, a request to a battery management system (BMS) associated with an energy storage device positioned in the device-exchange station; (2) receiving, by the device-exchange station, maintenance information from the BMS; and (3) in response to the maintenance information, determine whether to perform a maintenance action.

Abstract: Example methods and apparatuses for file compaction in a key-value store system relating to the field of data processing technologies are described. One example method for file compaction in a key-value store (KV-Store) system includes compacting, according to a to-be-deleted log (Delete Log) that corresponds to a to-be-compacted sorted string table (SSTable), the to-be-compacted SSTable to generate a new SSTable. A key corresponding to a non-latest value in the KV-Store system and stored in the to-be-compacted SSTable is recorded in the Delete Log, and the new SSTable does not include a key-value pair that corresponds to the key in Delete Log. The to-be-compacted SSTable is then deleted.

Abstract: A networked lighting system is provided which stores, e.g. in a lighting controller node, lighting control data such as scenes or rules based on receiving such data from an application running on a first computer device. An identification of the application which lighting control data was received from is stored alongside this data. When an input is received by (a node in) the networked lighting system from an application running on a second computer device indicating that the lighting control data is to be edited, an application call is executed such that the application the lighting control data was received from is run on this second computer device.

Abstract: A connector assembly is provided which includes a shielding shell, a receptacle connector and a heat sink. The shielding shell has a top wall, a receiving cavity positioned inside, an inserting opening which is positioned at a front end of the shielding shell and communicated with the receiving cavity and a window which is formed to the top wall, extends rearwardly and is communicated with the receiving cavity. The receptacle connector is provided to a rear segment of the receiving cavity. The heat sink is provided to the top wall and includes a heat dissipating base. A bottom face of the heat dissipating base downwardly enters the receiving cavity via the window and directly faces a top face of the receptacle connector. The bottom face of the heat dissipating base facing the receptacle connector is provided with a front stopping portion which is adapted to stop a mating module.

Abstract: Embodiments of nanostructures comprising metal oxide and methods for forming the nanostructure on surfaces are disclosed. In certain embodiments, the nanostructures can be formed on a substrate made of a nickel titanium alloy, resulting in a nanostructure containing both titanium oxide and nickel oxide. The nanostructure can include a lattice layer disposed on top of a nanotube layer. The distal surface of the lattice layer can have a titanium oxide to nickel oxide ratio of greater than 10:1, or about 17:1, resulting in a nanostructure that promotes human endothelial cell migration and proliferation at the interface between the lattice layer and human cells or tissue. The nanostructure may be formed on the outer surface of an implantable medical device, such a stent or an orthopedic implant (e.g. knee implant, bone screw, or bone staple).

Abstract: A network device receives, from a congestion controller, traffic policy information associated with a data stream between a sender and a receiver, where the traffic policy information includes a maximum round trip delay time (RTT) and a maximum throughput rate (Rate). The network device obtains a receiver advertised window size (RWND) for the receiver for the data stream. The network device modifies the RWND based on the RTT and the Rate to produce a modified receiver window size (RWND?) and sends the RWND? to the sender for use in controlling congestion on the data stream between the sender and the receiver.

Abstract: A motor-driven friction braking device for a rail vehicle is mainly composed of a torque motor, a speed reduction mechanism, an electromagnetic brake (1), a screw nut transmission mechanism and a brake friction pair (9). The torque motor, a screw (7), the speed reduction mechanism and the electromagnetic brake (1) are coaxially mounted; the torque motor is fixedly connected to the speed reduction mechanism, and the speed reduction mechanism is fixedly connected to the screw (7); the screw (7) is in non-self-locking threaded connection with a nut (8), and one end of the nut (8) is connected to the brake friction pair (9); and the electromagnetic brake (1) is mounted on the screw (7).