Abstract: A thermal state of a plurality of zones of the building is updated according to a building thermal model and information received from temperature sensors of the building. Predicted occupant counts for an upcoming plurality of time slots for each of the plurality of zones are updated using actual occupancy counts for each of the plurality of zones. A misprediction type distribution for the upcoming plurality of time slots for each of the plurality of zones is updated, the misprediction type distribution indicating misprediction for true negatives, false positives, false negatives, and true positives. A total misprediction cost expectation is updated according to the predicted occupant counts and the misprediction type distribution. HVAC power for each of the plurality of zones is determined to optimize occupant thermal comfort weighted according to the predicted occupant counts while minimizing the total misprediction cost expectation. HVAC operation is controlled per the HVAC power.

Abstract: An optical component includes a phase diffraction grating and an amplitude diffraction grating. The phase diffraction grating includes a center concave section and a plurality of ring stages. The ring stages surround the center concave section. The center concave section and the ring stages form a cavity, where a light source is disposed in the cavity and emits the light to the optical component. Each of the ring stages has a stage surface. Each of the stage surfaces includes a plurality of ring microstructures arranged in concentric circles. The widths of each ring microstructure in at least one of the ring stages are less than the quarter wavelength of the light. The amplitude diffraction grating includes a center convex section and a plurality of ring parts. The center convex section and the center concave section are aligned. The ring parts surround the central convex section.

Abstract: After a cleaning device is powered-on and initialized, a water path self-detection method for the cleaning device comprises the following steps: 1) judging whether a low water level switch is turned on; if so, controlling a water inlet valve to be turned on, controlling a water pump to be turned off, and going to step 2; if not, controlling the water pump to be turned on, controlling the water inlet valve to be turned off, and going to step 3; 2) judging whether a water replenishment time exceeds a preset first threshold; if so, a fault is confirmed, and the water inlet valve is controlled to be turned off; and if not, returning to step 1; 3) judging whether the low water level switch is turned on; and 4) judging whether a water pumping time exceeds a preset second threshold.

Abstract: The present invention relates to a method of treating moderate or severe symptoms of COVID-19 using a plant composition. The plant composition comprises Prepared Monkshood Daughter Root (Aconitum carmichaelii), Fragrant Solomonseal Rhizome (Polygonatum odoratum), Indian Bread (Poria cocos), Pinellia tuber (Pinellia ternata), Oriental Wormwood Herb (Artemisia scoparia), Scutellaria Root (Scutellaria baicalensis), Mongolian Snakegourd Fruit (Trichosanthes kirilowii), Magnolia Bark (Magnolia officinalis), Heartleaf Houttuynia Herb (Houttuynia cordata), and Baked Licorice Root and Rhizome (Glycyrrhiza glabra), which is used as a traditional Chinese medicine composition.

Abstract: A foaming device comprises a valve body, a pump, and a self-suction spray head. The valve body comprises a water inlet port, a liquid inlet port, a mixing cavity, and a liquid outlet port. Each of the water inlet port, the liquid inlet port, and the liquid outlet port is in communication with the mixing cavity, and an input end of the pump is connected to the liquid outlet port to enable the mixing cavity to generate a negative pressure to suck water and foaming agent respectively from the water inlet port and the liquid inlet port for mixing. The self-suction spray head is connected to an output end of the pump, and the self-suction spray head comprises a first air inlet hole and a spray hole to enable mixed liquid to be mixed with air to produce foam to be sprayed out.

Abstract: The present disclosure discloses a foaming spraying device and a foaming toilet. The foaming spraying device comprises a foaming spraying body. The foaming spraying body comprises a foaming cavity, a suction port, an accelerating hole, and a foam spraying port, each of which is in communication with a foaming cavity. The accelerating hole is configured to enable a foaming solution to be accelerated to enter the foaming cavity of the foaming spraying body, so that the foaming cavity of the foaming spraying body generates negative pressure to suck air through the suction port and the air is mixed with the foaming solution to form foam.

Abstract: A micro-electro-mechanical system (MEMS) microphone is provided. The MEMS microphone includes a substrate, a diaphragm, a backplate and a first protrusion. The substrate has an opening portion. The diaphragm is disposed on one side of the substrate and extends across the opening portion of the substrate. The backplate includes a plurality of acoustic holes. The backplate is disposed on one side of the diaphragm. An air gap is formed between the backplate and the diaphragm. The first protrusion extends from the backplate towards the air gap.

Abstract: The disclosure provides a silicon carbide seed crystal and a method of manufacturing a silicon carbide ingot. The silicon carbide seed crystal has a silicon surface and a carbon surface opposite to the silicon surface. A difference D between a basal plane dislocation density BPD1 of the silicon surface and a basal plane dislocation density BPD2 of the carbon surface satisfies the following formula (1), a local thickness variation (LTV) of the silicon carbide seed crystal is 2.5 ?m or less, and a stacking fault (SF) density of the silicon carbide seed crystal is 10 EA/cm2 or less: D=(BPD1?BPD2)/BPD1?25%??(1).

Abstract: A silicon carbide crystal includes a seed layer, a bulk layer, and a stress buffering structure formed between the seed layer and the bulk layer. The seed layer, the bulk layer, and the stress buffering structure are each formed with a dopant that cycles between high and low dopant concentration. The stress buffering structure includes a plurality of stacked buffer layers and a transition layer over the buffer layers. The buffer layer closest to the seed layer has the same variation trend of the dopant concentration as the buffer layer closest to the transition layer, and the dopant concentration of the transition layer is equal to the dopant concentration of the seed layer.

Abstract: A method of manufacturing silicon carbide seed crystal and method of manufacturing silicon carbide ingot are provided. The silicon carbide seed crystal has a silicon surface and a carbon surface opposite to the silicon surface. A difference D between a basal plane dislocation density BPD1 of the silicon surface BPD1 and a basal plane dislocation density BPD2 of the carbon surface satisfies the following formula (1): D=(BPD1?BPD2)/BPD1?25%??(1).

Abstract: A micro-electro-mechanical system (MEMS) microphone is provided. The MEMS microphone includes a substrate, a backplate, an insulating layer, and a diaphragm. The substrate has an opening portion. The backplate is disposed on a side of the substrate, with protrusions protruding toward the substrate. The diaphragm is movably disposed between the substrate and the backplate and spaced apart from the backplate by a spacing distance. The protrusions are configured to limit the deformation of the diaphragm when air flows through the opening portion.

Abstract: A spray washing component for a smart toilet cover and an assembly method thereof are provided. The spray washing component includes a base, a nozzle, and a first motor. A sliding track is disposed on the base. The nozzle has a rack cooperating with the first motor. The first motor drives the nozzle to slide along the base. The first motor is installed at an end away from a jet of the nozzle and drives the nozzle to be displaced through a transmission structure. The transmission structure includes a driving gear, a dual transmission gear, and a conveyor belt. The driving gear is in anti-rotation cooperation with an output shaft of the first motor. The dual transmission gear respectively meshes with the conveyor belt and the rack on the nozzle. The spray washing component and the assembly method solve the large space occupation and insufficient aesthetics of the existing toilet.

Abstract: A system and method for monitoring and analyzing activities of a user operating an electric tooth brush having an electric motor. The magnetic field induced by motions of the electric motor can be detected by a sensor array to generate signals. The signals are processed to determine a position of the brush head and a roll angle of the brush head. Based on the position and roll angle of the brush head, the surface of the teeth of the user, which is being brushed by the brush head, can be determined. This operation can be repeated to determine whether all the surfaces of the teeth have been brushed.

Abstract: An embodiment of the present invention provides a micro light emitting diode (LED) array and its manufacturing method. The micro-LED includes a substrate, an epitaxial layer formed on the substrate, and a conversion film formed on the epitaxial layer. Pixels can be defined through lithography, and the pixel size can be very small. This method is characterized in that a mass transfer is not required.

Abstract: A method for detecting defects in a GaN high electron mobility transistor is disclosed. The method includes steps of measuring a plurality of electrical characteristics of a GaN high electron mobility transistor, measuring the plurality of electrical characteristics after performing a deterioration test on the GaN high electron mobility transistor, irradiating the GaN high electron mobility transistor in turns with a plurality of light sources with different wavelengths and measuring the plurality of electrical characteristics after each irradiation of the GaN high electron mobility transistor by each of the plurality of light sources, and comparing changes of the plurality of electrical characteristics measured in the above steps to determine the defect location of the GaN high electron mobility transistor.

Abstract: A MEMS microphone includes a substrate, a backplate disposed on a side of the substrate, a diaphragm movably disposed between the substrate and the backplate, and a plurality of slots formed on the diaphragm. The slots are spaced apart from each other and have a non-constant width to relieve the residual stress on the diaphragm.

Abstract: A method and an apparatus for determining a selected target, a device, and a storage medium belong to the field of computer technologies. The method includes: displaying a thumbnail map, the thumbnail map displaying at least one target; presenting, in a target presentation menu, without overlap, and based on a trigger instruction targeting a combined stack response area in the thumbnail map, at least two stacked targets in the combined stack response area, the combined stack response area being a combined area of trigger response areas respectively corresponding to the at least two stacked targets in the thumbnail map; and determining a first target presented in the target presentation menu as a selected target based on a target trigger instruction targeting the first target, the first target being one of the at least two stacked targets.

Abstract: A virtual item information transmission method includes: displaying a game play interface of a multiplayer online game; displaying a virtual item selection interface of the multiplayer online game in response to an item selection operation, the virtual item selection interface including an option of at least one virtual item; and transmitting, in response to an information transmission operation on a target virtual item in the at least one virtual item, item usage suggestion information to a target recipient account for displaying, the item usage suggestion information being used for instructing the target recipient account to use the target virtual item in the multiplayer online game.

Abstract: An embodiment of the present invention provides a micro light emitting diode (LED) array and its manufacturing method. The micro-LED includes a substrate, an epitaxial layer formed on the substrate, and a conversion film formed on the epitaxial layer. Pixels can be defined through lithography, and the pixel size can be very small. This method is characterized in that a mass transfer is not required.

Abstract: This application provides an information processing method and apparatus in a virtual scene, a device, a computer-readable storage medium, and a computer program product. The method includes displaying a skill control of a target skill corresponding to a virtual object controlled by the electronic device in a display interface of a virtual scene; when the skill control is in a cooldown state, receiving a transmission instruction of skill cooldown prompt information triggered from the skill control, the transmission instruction being associated with a target virtual object in the virtual scene; transmitting the skill cooldown prompt information of the skill control to the target virtual object in the virtual scene in response to the transmission instruction; and displaying the skill cooldown prompt information prompting a cooldown time of the skill control.