Abstract: A full-frequency band high quality MEMS microphone with a bar and sound tunnels includes a sensor, acoustic chamber, and circuit board; the sensor includes a diaphragm and silicon back plate; the diaphragm is provided with a bar assembly; the bar assembly includes a plurality of arc-shaped bar members, arranged in a ring, and a gap is formed between the two adjacent members; the diaphragm has an annular area and at least two radial grooves on the same surface with the bar assembly; the radial grooves are arranged radially and uniformly, and then the surface of the diaphragm located outside the bar assembly is divided into multiple resonance regions; the radial grooves and gaps between the two arc-shaped bar members are matched one by one; each radial groove inner end is connected with the annular area; the radial groove is concave on surface of the diaphragm to form a sound tunnel.

Abstract: Current sharing in a power system having multiple PSUs comprises generating and supplying a first power and a second power to a load, and sensing a remote voltage value received by the load based on an accumulation of the first and second powers. The method further comprises determining, by the first PSU, local voltage and current values of the first power, a real impedance value of the first PSU based on the remote voltage value and the local voltage and current values of the first power, and a virtual impedance value of the first PSU based on the real impedance value of the first PSU and a reference impedance value. The method further comprises controlling generation of the first power by the first PSU based on the virtual impedance value of the first PSU.

Abstract: Disclosed are techniques for automated locating of user interface elements during graphical user interface testing. When a graphical user interface (GUI) is received for testing, images of the GUI are inputted to a machine learning algorithm, where image processing techniques are applied to identify groups of user interface elements and their constituent elements. Multi-dimensional index values are assigned to groups and elements corresponding to their positions within the GUI. Automated testing of the user interface elements of the GUI is performed by locating the user interface elements by their index values. If an element is not found, a scrolling technique is applied to generate an expanded virtual GUI of one or more groups of user interface elements, and the machine learning algorithm refreshes the index values using the expanded virtual GUI.

Abstract: The photovoltaic cell sheet includes: a cell sheet body having a first end and a second end opposite to each other in a width direction of the cell sheet body, wherein the first end of the cell sheet body is provided with a plurality of sawtooth spacing along a length direction of the cell sheet body; a first main gate arranged at one side of front and back sides of the plurality of sawtooth and serving as a first electrode; and a second main gate arranged at another side of the front and back sides of the cell sheet body and serving as a second electrode, wherein the second main gate is adjacent to the second end of the cell sheet body.

Abstract: An integrated circuit includes a memory cell array, a row decoder configured to generate a first decoder signal, a column decoder configured to generate a second decoder signal and an array of write assist circuits electrically coupled to the row and column decoder and the memory cell array. Each write assist circuit is configured to set an operating voltage of a corresponding memory cell. The operating voltage corresponds to an output signal. Each write assist circuit includes a set of P-type transistors coupled together in parallel and further coupled to a supply voltage, and configured to set the output signal in response to an input control signal, and a first N-type transistor coupled to the set of P-type transistors. A first terminal of the first N-type transistor is configured to receive the input control signal. A second terminal of the first N-type transistor is coupled to the supply voltage.

Abstract: Provided is a method for producing a C9 hydrogenated resin by reusing a thermally polymerized liquid resin. The method includes: preheating a polymerization reaction material by a feed heat exchanger using a polymerization liquid as a heat source, and then subjecting a resulting preheated polymerization reaction material to polymerization in a polymerization reactor group; transferring a mixed liquid of unpolymerized C9 and a liquid resin evaporated from a flash evaporation system (11) to a refining tower (9), and performing refining; subjecting a thermally polymerized resin obtained from a bottom of the flash evaporation system (11) to hydrogenation to synthesize a hydrogenated resin; and using a refined liquid resin obtained from the refining tower (9) as a vacuum mother liquor of the vacuum pump (18), and then returning the refined liquid resin to the polymerization reactor group, and making the refined liquid resin to participate in the polymerization.

Abstract: A supported catalyst has a support and a metal active component disposed on the support. The metal active component is at least one selected from the group consisting of a Group VIB metal element and a Group VIII metal element. The support contains at least one of heat-resistant inorganic oxides and molecular sieves and includes an internal channel penetrating the support. The ratio of the cross-section area of the channel to the cross-section area of the support is 0.05-3:100. The difference R between the water absorption rate and the BET pore volume of the support is not less than 0.2 mL/g. The supported catalyst can be used as a hydrogenation catalyst. When used in the hydrocracking of hydrocarbon oils, it can achieve high catalytic activity and high yield of jet fuels at the same time. The supported catalyst can also be used as a Fischer-Tropsch synthesis catalyst.

Abstract: A grand piano soundboard with a bar and sound tunnels has an outer wall with first and second grooves. The first groove is arranged diagonally in the width direction. The second groove is arranged diagonally in the length direction. The grooves cross and connect on the outer wall of the soundboard. The outer wall is divided into four resonance regions, and its center has a bar assembly having strip-shaped bar members arranged on both sides of the grooves in pairs; The grooves form a sound tunnel on the outer wall. The soundboard is changed from the previous free vibration mode to the current standard vibration mode. The treble of the grand piano is bright and the bass was sonorous and mellow from the perspectives of vibration, resonance and phonation. The design scheme has outstanding substantive characteristics and remarkable technical progress, and has obtained technical results.

Abstract: The present invention discloses a bridged ring-substituted heteroaryl-pyran derivative and a use thereof, and in particular discloses a compound as represented in formula (VI) or a pharmaceutically acceptable salt thereof.

Abstract: An optical system affixed to an electronic apparatus is provided, including a first optical module, a second optical module, and a third optical module. The first optical module is configured to adjust the moving direction of a first light from a first moving direction to a second moving direction, wherein the first moving direction is not parallel to the second moving direction. The second optical module is configured to receive the first light moving in the second moving direction. The first light reaches the third optical module via the first optical module and the second optical module in sequence. The third optical module includes a first photoelectric converter configured to transform the first light into a first image signal.

Abstract: A method is provided of swapping code execution among multiple microcontroller code banks. The microcontroller has computer-readable memory, a central processing unit, and an interrupt controller. The method comprises executing an instruction to process a first pointer storing an address location of a first application within a first code bank of computer-readable memory. The first application is executed based on processing the first pointer. The method also comprises replacing the address location of the first application stored within the first pointer with an address location of a second application stored with a second code bank of the computer-readable memory. The instruction to process the first pointer is executed to process the address location of the second application to execute the second application without stopping operation of the interrupt controller.

Abstract: A semi-automatic precision positioning robot apparatus and method for use of the same to hold, position, orient and/or move a workpiece are provided. The positioning apparatus utilizes an actuator system of a given configuration to manipulate a workpiece holding unit with multiple degrees of freedom to achieve various positions and orientations. An associated tool may further be provided to interact with the workpiece in various positions and orientations. The positioning apparatus enables an operator to obtain high degrees of maneuverability while maintaining precision and consistency in the manufacture and production of various products and components.

Abstract: Current sharing in a power system having multiple PSUs comprises generating and supplying a first power and a second power to a load, and sensing a remote voltage value received by the load based on an accumulation of the first and second powers. The method further comprises determining, by the first PSU, local voltage and current values of the first power, a real impedance value of the first PSU based on the remote voltage value and the local voltage and current values of the first power, and a virtual impedance value of the first PSU based on the real impedance value of the first PSU and a reference impedance value. The method further comprises controlling generation of the first power by the first PSU based on the virtual impedance value of the first PSU.

Abstract: A functional testing method, adapted to a device under test, includes, by a main control chip, performing: requesting a test script according to identification information of the device under test from a database server, wherein the test script comprises a plurality of testing items of different types, and testing the device under test according to the test script.

Abstract: Provided are a circuit and method for measuring capacitance and capacitance-voltage characteristics of a microelectronic device. The circuit includes a pulse generation sub-circuit, a sub-circuit P, and a sub-circuit N. The pulse generation sub-circuit generates clock pulses CLK1 and CLK2 with non-overlapping active levels. The sub-circuit P includes a first current mirror, a first large capacitor, a first transmission gate, a second transmission gate, a first OR gate, a first AND gate, a first NOT gate, a second NOT gate, and a third NOT gate. The sub-circuit N includes a second current mirror, a second large capacitor, a third transmission gate, a fourth transmission gate, a second OR gate, a second AND gate, a fourth NOT gate, a fifth NOT gate, a sixth NOT gate, and a seventh NOT gate.

Abstract: A functional testing device includes a substrate, a plurality of connection ports, an input/output module, a main control module and a power module. The plurality of connection ports are disposed on the substrate. The input/output module is disposed on the substrate and configured to receive at least one test script. The main control module is disposed on the substrate and connected to the plurality of connection ports, the main control module is configured to output a plurality of testing signals to at least one of the plurality of connection ports according to the at least one test script. The power module is disposed on the substrate and configured to receive and transmit power to the main control module.

Abstract: A functional testing device includes a substrate, an input/output module, a plurality of functional testing modules, a baseboard management control module and a power module. The input/output module is disposed on the substrate and configured to receive a test script. The plurality of functional testing modules are pluggably disposed on the substrate. The baseboard management control module is disposed on the substrate and connected to the input/output module and the plurality of functional testing modules, the baseboard management control module is configured to control the plurality of functional testing modules output a plurality of testing signals according to the test script. The power module is disposed on the substrate and configured to receive and transmit power to the plurality of functional testing modules and the baseboard management control module.

Abstract: An assistance system that can be used for prosthetic heart valve manufacturing or suturing procedures includes an automated fixture that can comprise an articulation arm and a target device holder. The target device holder can be positioned and oriented to reduce operator strain during a manufacturing or inspection process. The assistance system includes a user input device enabling the operator to move between positions to assist in such processes. The assistance system can also be trained by capturing sequences of position data corresponding to a manufacturing or inspection process.

Abstract: Post-copy is one of the two key techniques (besides pre-copy) for live migration of virtual machines in data centers. Post-copy provides deterministic total migration time and low downtime for write-intensive VMs. However, if post-copy migration fails for any reason, the migrating VM is lost because the VM's latest consistent state is split between the source and destination nodes during migration. PostCopyFT provides a new approach to recover a VM after a destination or network failure during post-copy live migration using an efficient reverse incremental checkpointing mechanism. PostCopyFT was implemented and evaluated in the KVM/QEMU platform. Experimental results show that the total migration time of post-copy remains unchanged while maintaining low failover time, downtime, and application performance overhead.

Abstract: Methods and systems for improving fusion bonding are disclosed. Plasma treatment is performed on a substrate prior to the fusion bonding, which leaves residual charge on the substrate to be fusion bonded. The residual charge is usually dissipated through an electrically conductive silicone cushion on a loading pin. In the methods, the amount of residual voltage on a test silicon wafer is measured. If the residual voltage is too high, this indicates the usable lifetime of the silicone cushion has passed, and the electrically conductive silicone cushion is replaced. This ensures the continued dissipation of residual charge during use in production, improving the quality of fusion bonds between substrates.