Abstract: A direct current converter includes a plurality of direct current converter modules having electrical input voltages and output voltages that differ from each other. The plurality of direct current converter modules are electrically connectable to one another to form a plurality of subsystems such that a high-voltage electrical voltage is convertible into different low-voltage electrical voltages. The plurality of direct current converter modules are configured as a shared integrated assembly. At least one of the plurality of subsystems is always active.

Abstract: A vertical take-off and landing aircraft includes a fuselage, 2N tilting rotors, and 2N fixed rotors. Wings of a fixed-wing structure are arranged on two sides of the fuselage. An empennage is arranged at a tail of the fuselage. The 2N tilting rotors are symmetrically installed on two sides of the fuselage and located on the front and rear sides of the wings respectively. The 2N fixed rotors are symmetrically installed on the wings on both sides of the fuselage, located on the front and rear sides of the wings respectively and on the outer sides of the tilting rotors. N is a natural number greater than or equal to 2. In a vertical take-off and landing configuration, projections of all the tilting rotors and all the fixed rotors on a horizontal plane are approximately centrally symmetrical about the center of gravity of the aircraft.

Abstract: A III-V/Si hybrid MOS optical modulator with a traveling-wave electrode for high-efficiency and high-bandwidth optical modulation is disclosed. The III-V/Si hybrid MOS optical modulator equipped with a traveling-wave electrode becomes a traveling-wave modulator. The traveling-wave modulator comprises a III-V compound semiconductor layer, a silicon layer and an oxide layer between the III-V compound semiconductor layer and the silicon layer. The traveling-wave modulator comprises of at least one first metallic layer, at least one second metallic layer and a semiconductor layer. The electrode trace width of each second metallic layer and the spacing between adjacent second metallic layers are adjusted to achieve the impedance and velocity matching. A traveling-wave electrode is designed to integrate with the III-V/Si hybrid MOS optical modulator under forward and reverse bias.

Abstract: A method for migrating virtual machine snapshots to application container platforms is disclosed. In one embodiment, such a method includes migrating, from a virtual machine platform to a volume on a container platform, a base disk file associated with a virtual machine. The base disk file has one or more delta disk files associated therewith, where each delta disk file records changes made to the virtual machine after a snapshot was taken. After migrating the base disk file, the method repeatedly performs the following for each delta disk file: takes a snapshot of the volume on the container platform; migrates the delta disk file from the virtual machine platform to the container platform; and writes the delta disk file to the volume. In certain embodiments, the delta disk files are written to the volume in an order in which they were created on the virtual machine.

Abstract: Disclosed is a nursing machine, including a main unit, an excrement collector, a first connecting apparatus for connecting between the main unit and the excrement collector, the first connecting apparatus includes a plug connector assembly, and at least one communicating pipe for connecting between the plug connector assembly and the main unit; the plug connector assembly includes a first coil unit for supplying power to the excrement collector, and at least one first connecting port; the excrement collector includes an excrement groove for receiving human excrement, a second coil unit corresponding to the first coil unit, and a mating interface portion; the mating interface portion includes at least one second connecting port for correspondingly butting with the at least one first connecting port; and the plug connector assembly is able to be forwardly inserted into the mating interface portion to butting with the mating interface portion.

Abstract: A component arrangement for an electric high-voltage on-board power supply of a vehicle includes a shared EMC filter, a shared intermediate circuit, a plurality of electrical components, and a shared housing. The shared EMC filter and the shared intermediate circuit are provided for the plurality of electrical components. The plurality of electrical components are disposed in the shared housing together with the shared EMC filter and the shared intermediate circuit. The plurality of electrical components are interconnected in parallel with the shared intermediate circuit and the shared EMC filter and there is otherwise no electrical connection between them.

Abstract: A medical endoscope device includes an optical component, an image sensor component, a driving apparatus, an operating member, and a detection apparatus. A trigger area of the detection apparatus reflects or transmits a detection light to form different reflected lights or different transmitted lights, and the different reflected lights or different transmitted lights generate different electrical signals, to represent a rotation angle and/or a rotation direction of the operating member, and to control the driving apparatus to adjust a distance of an optical path between the optical component and the image sensor component to achieve focusing.

Abstract: This invention pertains to corrosion inhibition, specifically involving a Platanus acerifolia leaf extract inhibitor. The extract serves to inhibit corrosion of copper in sulfuric acid or steel in hydrochloric acid. In sulfuric acid, inhibition efficiency reaches 96.7%, while in hydrochloric acid, it achieves 93.1% efficiency on Q235 steel. This Platanus acerifolia leaf extract inhibitor exhibits robust corrosion inhibition on copper in sulfuric acid and steel in hydrochloric acid, offering comprehensive anti-corrosion performance suitable for various materials.

Abstract: Embodiments herein relate to method performed by a radio-network node for handling a data transmission, from a wireless device to the radio-network node, in a wireless communication network. The radio-network node schedules one or more resources for carrying an uplink data transmission from the wireless device over a channel, and for carrying a feedback transmission, of a downlink data transmission from the radio-network node, over the same channel. The radio-network node transmits a control message to the wireless device, which control message indicates the one or more resources scheduled for carrying the uplink data transmission and the feedback transmission over the same channel.

Abstract: Disclosed in the present application are an indole bipyrimidine compound, and an intermediate thereof, a preparation method therefor and use thereof. The indole bipyrimidine compound, as shown in formula I, or a pharmaceutically acceptable salt thereof provided in the present invention has a good inhibitory effect on an EGFR Del19/T790M/C797S mutation, and is expected to treat and/or prevent a variety of diseases mediated by EGFR.

Abstract: A specific solution includes: displaying, by a terminal, a first candidate interface in response to an operation input by a user to display the first candidate interface; detecting, by the terminal, an operation input by the user to shrink the first candidate interface, and displaying an interface including the shrunk first candidate interface; displaying, by the terminal in response to a minimization operation input by the user, an interface on which the first candidate interface is in a minimized state; minimizing a second candidate interface in a same way; displaying, by the terminal, an interface including a drop-down menu of a status bar in response to an operation input by the user to display the drop-down menu of the status bar; and displaying, by the terminal, a multi-window display interface in response to a selection operation input by the user.

Abstract: The invention provides a MEMS speaker including a substrate enclosing a cavity, a cantilever beam at least partially suspended above the cavity, a piezoelectric actuator away from the cavity, a polymer layer away from the cavity and attached to the cantilever beam and the piezoelectric actuator for completely covering the cantilever beam, the piezoelectric actuator and the cavity, and a piezoelectric composite vibration structure formed by the polymer layer. The cantilever beam includes a first section fixed to the substrate, a second section extending from the first section to the cavity and suspended above the cavity, and a third section extending from the second section away from the first section, an end of the third section away from the second section being suspended; and the piezoelectric actuator is only fixed with the third section.

Abstract: The present disclosure relates to a method, a device, and a program product for processing sample data in an Internet of Things environment. A method in one embodiment includes: receiving features of the sample data from an encoder deployed in a remote device in the Internet of Things environment; acquiring a category probability corresponding to the sample data based on a classifier deployed in a local device in the Internet of Things environment and the features; and classifying the sample data to a predetermined category in response to determining that the category probability satisfies a first threshold condition. Further, a corresponding device and a corresponding program product are provided. With example implementations of the present disclosure, computing resources of devices in an Internet of Things environment can be fully utilized to process sample data.

Abstract: A file access right authentication method and system allows right authentication to be performed on an access request for accessing a file in a system to thereby improve system security. The method includes: receiving, by an electronic device, a file access request, where the file access request is used to request to access a first file on the electronic device; obtaining a first process identifier in the file access request, and determining first fixed identity information corresponding to the first process identifier; and matching the first fixed identity information with authorized fixed identity information corresponding to the first file), and when the matching succeeds, determining that authentication of the file access request is successful.

Abstract: A pixel circuit and a driving method therefor, a display substrate, and a display apparatus. The pixel circuit includes a driving sub circuit, a data writing sub circuit, a first light-emitting control sub circuit, a first reset sub circuit, and a bias sub circuit; the first reset sub circuit is connected to a first node and configured to write a first reset voltage to the first node in response to a first reset control signal; and the bias sub circuit is connected to a second node and configured to write a reference voltage to the second node in response to a bias control signal, thereby turning on the driving sub circuit.

Abstract: Donor-acceptor type thermally activated delayed fluorescent emitters based on imidazo[1,2-F]phenanthridine and analogues for full color displays and lighting applications.

Abstract: The present invention relates to the technical field of construction engineering, and specifically to configurations and close-fitting joints for a second-order scissor damper and an assembly method for the same. There six parts in total, including first hinge joints, a first-order shuttle-shaped linkage mechanical component, second hinge joints, a second-order shuttle-shaped linkage mechanical component, third hinge joints, and a viscous damper; the second-order shuttle-shaped linkage mechanical component includes four small connecting rods of equal length and it is formed by hinging them together. The device of the present invention can constrain the joints, release the bending constraints on the ends of the rods, and enable a significant increase in the stroke amplification of the conventional scissor damper.

Abstract: The present utility model discloses a wall lamp, including a wall lamp housing and a wall lamp rear cover, both provided with a hollow cavity. The wall lamp housing is provided therein with an LED light source board and a forward-inclining mounting frame. The present utility model has designed a part in the wall lamp that can meet the needs of switching between full cutoff light and semi-cutoff light. When full cutoff light is required, the LED light source board is adjusted to a horizontal state and is fixed, and it can be used as a full cutoff light lamp. When the LED light source board is at 15° or other angle, it can be used as a semi-cutoff light lamp, which can be adjusted according to a user's needs. At the same time, the light output range can also be adjusted when adjusting the angle.

Abstract: An electric toothbrush head, including: a housing, wherein the housing is provided with a mounting cavity and a mounting hole communicated with the mounting cavity; a transmission assembly, wherein the transmission assembly is arranged in the mounting cavity and comprises a first transmission rod, a second transmission rod and a third transmission rod, one end of the first transmission rod, one end of the second transmission rod and one end of the third transmission rod are rotatably connected through a rotating shaft, and the other end of the third transmission rod is hinged in the mounting cavity; and a cleaning head, wherein the cleaning head is rotatably mounted in the mounting cavity from the mounting hole, a bottom of the cleaning head is eccentrically provided with a first rotating groove, and another end of the second transmission rod is arranged in the first rotating groove.