Abstract: A compressor and a refrigeration device are provided. The compressor has a housing, a first cylinder, a first piston, a second cylinder and a second piston. The housing has a first air outlet port and a second air outlet port. The first cylinder has an accommodating cavity, and the first piston is eccentrically disposed in the first accommodating cavity. The second cylinder has a second accommodating cavity, and the second piston is eccentrically disposed in the second accommodating cavity.

Abstract: In various embodiments, provided herein are pamoate salts of monoamine Anti-Parkinsons disease agents including rotigotine, ropinirole, pramipexole, selegiline, rasagiline, and safinamide, pharmaceutical composition comprising the same, methods of preparing the same, and methods of using the same. For example, the pamoate salt herein can be characterized by a molar ratio of rotigotine, ropinirole, pramipexole, selegiline, rasagiline, or safinamide to pamoic acid of about 1:1 or about 2:1. The pamoate salt herein can also be crystalline including anhydrous, hydrate or solvate forms, or their polymorphs, or amorphous. The pamoate salts described herein can provide a long acting and/or extended release profile of the monoamine agents for the treatment of Parkinsons disease (PD). Thus, also provided herein are methods of preparing a long acting and/or extended release injectable formulation of the monoamine agents using their respective pamoate salts.

Abstract: A cable tray support system for supporting cables above an array of server racks in a data center is provided, along with a method of assembly. The system includes a free-standing cable tray support structure having vertical support posts disposed between the server racks in the array linked together by horizontal support members. Coupling assemblies couple the top ends of each vertical support posts with opposing ends of two horizontal support members arranged. The horizontal support members are sized to space the plurality of vertical support posts between the server racks of the array when the vertical support posts are coupled thereto. Tray supports mounted on along the horizontal support members support an upper and lower cable tray. Floor mounts anchor the bottom ends of the vertical support posts to the floor.

Abstract: Disclosed is a method for low voltage broadband power line carrier communication; when transmitting a physical layer protocol frame, short preambles are first transmitted to undergo automatic gain control, channel estimation, coarse-grained frequency offset compensation, and symbol synchronization; and then long preambles are transmitted to undergo automatic gain control, channel estimation, fine-grained frequency offset compensation, and symbol synchronization. Compared with the scheme of only transmitting long preambles, the present disclosure combines transmissions of short preambles and long preambles, which thus may quickly and accurately implement frequency offset compensation, automatic gain control, symbol synchronization, and channel estimation without sacrifice of precision, thereby achieving quick convergence, reducing resource overheads and time overheads, and enhancing system performance.

Abstract: This application provides a method for determining an automatic parking strategy. The method includes: determining, a target parking action corresponding to a current parking stage performing the target parking action; obtaining feedback information, where the feedback information is used to indicate whether a result of performing the target parking action reaches a predetermined objective, and the predetermined objective is a predetermined position of the vehicle relative to a target parking spot, and/or the predetermined objective is a status of the vehicle in the parking process; and updating the automatic parking strategy based on the feedback information. In the foregoing method, the entire parking process is divided into several parking stages, and a control strategy is obtained by using a different method at each stage. This can increase a success rate of automatic parking in a complex parking scenario.

Abstract: The composition containing a pamoate salt of donepezil, the method of preparation and the use thereof are disclosed.

Abstract: A modular data center support rack system and installation method whereby system includes a plurality of modular support racks formed from bracket-like rack members that support data center electrical power components, and a transportable fixture that detachably holds the rack members into an assembly position. The transportable fixture remains detachably connected to the assembled modular support rack during the transportation thereof to an installation location to reinforce the modular support rack. Each modular support rack includes an arrangement of data center electrical power supply components that are registrable with and connectable the data center electrical power supply components on another of the modular support racks. In the installation method, the modular support racks are serially interconnected into an appropriate electrical supply configuration for a row of servers located beneath the row of modular support racks.

Abstract: Disclosed is a method for spreading data symbol frequency domain information in power line carrier communication, wherein when generating a data symbol in power line carrier communication, multiple times of frequency domain information diversity copy is used in place of the conventional ROBO copy, such that the diversity copy is independent of channel time-varying property, but only dependent on channel characteristics; as such, diversity copy is implemented within the same symbol, which facilitates simplifying the processing circuit of frequency domain and meanwhile enhances communication reliability.

Abstract: A method includes photographing a first picture, the first picture including a signal light at a first intersection; and detecting a signal light status in the first picture by using a first detection model. The first detection model is a detection model corresponding to the first intersection. The first detection model is obtained by a server through training based on signal light pictures corresponding to the first intersection and signal light statuses in the signal light pictures. The signal light statuses in the signal light pictures are obtained through detection by using a general model. The general model is obtained through training based on pictures in a first set and a signal light status in each picture in the first set. The first set includes signal light pictures of a plurality of intersections.

Abstract: Disclosed is a method for spreading data symbol frequency domain information in power line carrier communication, wherein when generating a data symbol in power line carrier communication, multiple times of frequency domain information diversity copy is used in place of the conventional ROBO copy, such that the diversity copy is independent of channel time-varying property, but only dependent on channel characteristics; as such, diversity copy is implemented within the same symbol, which facilitates simplifying the processing circuit of frequency domain and meanwhile enhances communication reliability.

Abstract: In various embodiments, provided herein are pamoate salts of monoamine Anti-Parkinsons disease agents including rotigotine, ropinirole, pramipexole, selegiline, rasagiline, and safinamide, pharmaceutical composition comprising the same, methods of preparing the same, and methods of using the same. For example, the pamoate salt herein can be characterized by a molar ratio of rotigotine, ropinirole, pramipexole, selegiline, rasagiline, or safinamide to pamoic acid of about 1:1 or about 2:1. The pamoate salt herein can also be crystalline including anhydrous, hydrate or solvate forms, or their polymorphs, or amorphous. The pamoate salts described herein can provide a long acting and/or extended release profile of the monoamine agents for the treatment of Parkinsons disease (PD). Thus, also provided herein are methods of preparing a long acting and/or extended release injectable formulation of the monoamine agents using their respective pamoate salts.

Abstract: Disclosed is a method for low voltage broadband power line carrier communication; when transmitting a physical layer protocol frame, short preambles are first transmitted to undergo automatic gain control, channel estimation, coarse-grained frequency offset compensation, and symbol synchronization; and then long preambles are transmitted to undergo automatic gain control, channel estimation, fine-grained frequency offset compensation, and symbol synchronization. Compared with the scheme of only transmitting long preambles, the present disclosure combines transmissions of short preambles and long preambles, which thus may quickly and accurately implement frequency offset compensation, automatic gain control, symbol synchronization, and channel estimation without sacrifice of precision, thereby achieving quick convergence, reducing resource overheads and time overheads, and enhancing system performance.

Abstract: The composition containing a pamoate salt of donepezil, the method of preparation and the use thereof are disclosed.

Abstract: Embodiments of the present disclosure relate to methods, systems, and computer program products for storage management. In one embodiment, a computer-implemented method is disclosed. According to the method, in response to receiving a request related to managing the at least one directory entry in the file system, at least one directory entry in a file system may be determined by a file system in a storage system, where each of the at least one directory entry is represented by digital numbers. An index for each of the at least one directory entry may be managed in the file system by the file system, where an index key for the index comprises the digital numbers themselves. In other embodiments, a computer-implemented system and a computer program product for managing the index are disclosed.

Abstract: The composition containing a pamoate salt of donepezil, the method of preparation and the use thereof are disclosed.

Abstract: An unmanned movable platform (UMP) includes at least one sensor configured to detect a movement associated with the UMP, at least one radar configured to transmit a radar signal, and at least one processor configured to receive a sensor signal associated with the movement from the at least one sensor and direct the at least one radar to adjust a direction of a beam of the radar signal based at least in part on the sensor signal.

Abstract: A method for radar-based object avoidance for a movable platform includes performing a plurality of “ping-pong” measurements to receive electromagnetic signals corresponding to an object and background clutters by a radar of the movable platform, and distinguishing the object from the background clutters. Each of the “ping-pong” measurements includes a first measurement and a second measurement. A first direction of the first measurement is different from a second direction of the second measurement.

Abstract: The present disclosure provides a two-dimensional antenna system. The two- dimensional antenna system includes a transmitting antenna array and a receiving antenna array. The transmitting antenna array includes one or more circularly polarized transmitting antennas having a first direction of rotation. The receiving antenna array includes two or more first circularly polarized receiving antennas having a second direction of rotation arranged in a first direction, and two or more second circularly polarized receiving antennas having the second direction of rotation arranged in a second direction. The first direction is perpendicular to the second direction, and the first direction of rotation is opposite to the second direction of rotation.

Abstract: The composition containing a pamoate salt of donepezil, the method of preparation and the use thereof are disclosed.

Abstract: The composition containing a pamoate salt of donepezil, the method of preparation and the use thereof are disclosed.