Abstract: The present application provides a timer, including a base, a driving shaft, and an indicator arm. The driving shaft is rotatably mounted on the base and selectably rotates relative to the base. The indicator arm includes a second support and a plurality of hour blocks. The second support is rotatably connected to the driving shaft. The hour blocks each include a second block body and a second gear. The second block body is rotatably connected to the second support. The second gear is fixedly connected to the second block body. Second protrusion is correspondingly arranged on a rotation path of the second gear around the driving shaft. The second gear has second tooth grooves. The second protrusion selectably extends into the second tooth grooves to drive the second gear to rotate relative to the second support so as to drive the hour blocks to rotate relative to the second support.

Abstract: An image processing method includes: acquiring first image data of a first image, the first image data including pixel values of a plurality of pixels in the first image; a first compression-allowed region existing in the first image, obtaining region expression information of the first compression-allowed region, the first compression-allowed region including a region where a plurality of first pixels are located, and a difference between pixel values of any two first pixels in the plurality of first pixels being within a preset range; determining a region pixel value of the first compression-allowed region according to a pixel value of at least one first pixel in the first compression-allowed region; and generating second image data of the first image, the second image data including region expression information and the region pixel value of the first compression-allowed region.

Abstract: A method for predicting and controlling a water level of a series water conveyance canal on the basis of a fuzzy neural network is disclosed. The method includes: performing the relationship between a sluice opening degree and an open canal control water level by means of a fuzzy neural network, and constructing an upstream water level controller of a coupled predictive control algorithm; solving an optimal control rate of the upstream water level controller using a gradient optimization algorithm on the basis of a control target of the upstream water level controller; and generating a control strategy by collecting actually measured water level change information and multiplying the actually measured water level change information by the optimal control rate on the basis of the solved optimal control rate, thereby fulfilling the object of predicting and controlling the water level.

Abstract: The disclosure provides an energy station system, a control method of the energy station and an energy station. The energy station system includes at least one input energy source, at least one load, at least one central control module, and a switchable energy module. The switchable energy module switches its own working state based on a supply-demand relationship between the input energy source and the load, and the central control module controls the input energy source to supply power to the load. Through arranging the switchable energy module, it may be used to switch its working state according to the supply-demand relationship between the input energy source and 10 the load, so as to supplement the supply and demand imbalance between the input energy source and the load as characteristics of the input energy source or a DC load.

Abstract: The present disclosure provides a data storage method and device. The method includes: receiving a write data request transmitted by a server, where the write data request is used to request to store target data into a storage cluster, and the storage cluster is used to store and manage data to support writing and reading of the data; storing the target data into a persistent memory in a data processing unit, and dynamically recording, in a constructed index table, a data storage condition in the persistent memory, where the index table supports the server to read all or part of the target data; and sequentially reading the target data from the persistent memory and writing into the storage cluster until all the target data indicated by the write data request is written.

Abstract: An optical module with projection and photography functions comprises an optical lens, a light-splitting prism, a self-luminous micro-display unit, and a photoelectric image sensing unit. The optical lens has a first end and a second end. The light-splitting prism is equipped with a first end surface coupled to the second end of the optical lens, a second end surface, and multiple side surfaces. The self-luminous micro-display unit is coupled to the second end surface and is configured to emit projection light. The photoelectric image sensing unit is coupled to one of the side surfaces and is configured to receive light to form a photographic image. The optical lens, light-splitting prism, and photoelectric image sensing unit together form a photographic light transmission path. The self-luminous micro-display unit, light-splitting prism, and optical lens form a projection light transmission path.

Abstract: The present disclosure discloses a process for producing microcrystalline alpha-alumina by microwave calcination, which relates to the production process of calcined alumina. The product of the present disclosure has stable quality. The yield of the process of the present disclosure is higher than that of the traditional kiln production method. The energy consumption during the preparation of alpha-alumina is greatly reduced, and the zero emission of harmful gases is realized.

Abstract: The disclosure relates to a folding hanging chair frame and a hanging chair. Firstly, a lateral bracket tube set and a connecting structure of the hanging chair frame are detachably connected, so structural members of the hanging chair frame can be disassembled, and a volume of the folded hanging chair frame will not be limited to included angles between the structural members, which is convenient for storage and transportation. Secondly, with a connecting cable arranged between the lateral bracket tube set and the connecting structure, the lateral bracket tube set and the cross beam that are disassembled can be kept connected, which prevents one or more of the structural members from being lost. The hanging chair includes the hanging chair frame and a hanging chair belt hanging on the hanging chair frame with an adjustable angle along with a posture of a user.

Abstract: A battery control method for an intelligent fishing rod system, a controller, and a storage medium are provided. The method includes the following. An environmental parameter sent by a sensor module is received, and if a bite signal sent by the sensor module is not received, an energy storage battery is controlled based on the environmental parameter. If the bite signal sent by the sensor module is received, the energy storage battery is controlled to supply power to a stabilizer and a drag force parameter sent by the sensor module is obtained, where the drag force parameter is obtained by detecting, by the sensor module, a fishing rod controlled by the stabilizer. The energy storage battery is controlled based on the environmental parameter and the drag force parameter.

Abstract: A photon emitter includes a multi-layer film. The multi-layer film includes a first material layer and a second material layer, and the multi-layer film includes an interface surface between the first and second material layers. The first material layer includes silicon nitride. The multi-layer film is formed by positioning the silicon nitride over the second material layer and energetically activating the combination of the first material layer and the second material layer. The interface surface is operable to emit single photons.

Abstract: A multi-phase buck converter comprising M converter branches and a loop error amplifier and a chip are provided. Each converter branch comprises a driving module and a power stage output circuit. The driving module comprises a current information error amplifier, a synchronous ramp voltage generation circuit configured to generate a synchronous ramp signal based on the output voltage, a pulse width modulation comparator, and a driving control circuit. The current information error amplifier compares a detection voltage across an output inductor in a current converter branch with a detection voltage across an output inductor of in a previous converter branch, to generate a current information error signal. The pulse width modulation comparator superimposes the current information error signal to the output voltage error signal to generate a modulation voltage signal, and compares the modulation voltage signal with the synchronous ramp signal to generate a duty cycle modulation set signal.

Abstract: A motor controller generates first and second signals indicative of a motor back electromotive force (back emf) based on motor drive signals. The controller compares the first and second signals and detects a motor locked-rotor condition based on the comparison. The control circuitry may include a state observer, which, in operation, maintains a set of state variables based on the received signals, wherein the first signal indicative of the motor back emf is generated based on variables of the set of state variables. The controller may include a phase-locked-loop coupled to the state observer, wherein the phase-locked-loop, in operation, estimates a motor speed based on the variables of the set of state variables, wherein the second signal indicative of the motor back emf is generated based on the estimated motor speed. The motor may be a PMSM motor.

Abstract: A first sector patch and a second sector patch are loaded on a dielectric substrate having any dielectric constant. The circumferences of the first sector patch and the second sector patch are connected to the dielectric substrate by means of vertical shorting walls, respectively. Notches, a coaxial feeding probe, and a shorting pin are loaded on the first sector patch, so that the first three radiation patterns of the antenna are excited, disturbed and aggregated, and radiation null points which can be scanned along with a frequency change are symmetrically generated on a horizontal plane; moreover, addition of the second sector patch realizes a single-direction null frequency scanning function on the horizontal plane.

Abstract: A liquid pressure calibration apparatus is disclosed, wherein a first liquid path (200) and a second liquid path (300) with different pressure output ranges are arranged in parallel between a liquid pressure inlet port (A) and a liquid pressure output port (B) of the liquid pressure calibration apparatus, and the pressure output range of the first liquid path (200) is continuous with the pressure output range of the second liquid path (300). A target pressure to be output is compared with a switching pressure, and the first liquid path (200) or the second liquid path (300) is selected to supply pressure to the liquid pressure output port (B) based on the comparison result, and the target pressure is output.

Abstract: The disclosure relates to the technical field of experimental detection. A portable experimental device for hazardous chemical and an experimental method thereof are provided. The technical scheme of the disclosure integrates hazardous chemicals information and data of a portable meeting-water air release test device data to construct a perfect hazardous chemicals database, and realizes rapid prediction and response to a fire scene through scene data collection, preprocessing and matching. The scene data of the portable device is received and processed, and is compared with the database information, the random forest model is used to train the chemical reaction prediction model, and the real-time detection data is predicted to obtain the second prediction result. and the test experimental results are shared to each mobile terminal in time to realize the rapid transmission and sharing of information.

Abstract: Disclosed herein are compounds of Formula (I), or pharmaceutically acceptable salts thereof, that are inhibitors of Polo Like Kinase 4 (PLK4). Also disclosed herein are pharmaceutical compositions comprising the compounds of Formula (I), or pharmaceutically acceptable salts thereof, and one or more pharmaceutically acceptable excipients. Further disclosed herein are methods of treating cancer in a subject in need thereof, comprising administering to the subject an amount of a compound of Formula (I), or a pharmaceutically acceptable salt thereof.

Abstract: A graphene copper composite material preparation method based on a combination of hot pressing sintering and chemical vapor deposition, comprising: presetting multi-layer copper foil in a hot pressing chamber; preparing a graphene thin film on the surface of the copper foil by means of a chemical vapor deposition method to obtain a graphene copper composite material; and then performing hot pressing forming on the multi-layer graphene copper foil material to prepare the graphene copper composite material. Said material can replace a traditional copper material or silver material, is applied to a supercapacitor or a motor driving device, and has the effects of improving efficiency, reducing temperature rise, etc.

Abstract: A computing system including one or more processing devices configured to receive an image. The processing devices are further configured to compute a segmentation mask that identifies a region of interest included in the image. At a feature extractor, the processing devices are further configured to compute encoded image features based on the image. The processing devices are further configured to receive a text instruction. At a visual resampler, the processing devices are further configured to compute a mask query based on the segmentation mask, the encoded image features, and the text instruction. At a generative language model, the processing devices are further configured to receive a natural language query that includes the mask query and the text instruction. Based on the natural language query, at the generative language model, the processing devices are further configured to generate and output a semantic label associated with the region of interest.

Abstract: Provided are a heterocyclic derivative and an organic electroluminescent device thereof, which relates to the field of organic photoelectric materials. The heterocyclic derivative of Formula I has high electron mobility and great hole blocking performance, and thus the organic electroluminescent device prepared by using the heterocyclic derivative as the electron transport region material, especially the hole blocking material, has low drive voltage and high luminous efficiency. The organic electroluminescent device can also include a hole transport region, and the hole transport region, especially the emissive auxiliary layer, contains the triarylamine compound of Formula II. Since the electron transport region and the hole transport region of the device can effectively balance carriers, which reduces the quenching of excitons and improves the recombination probability of carriers, the device shows low drive voltage and high luminous efficiency.