Abstract: A light-emitting diode includes a semiconductor layer sequence. The semiconductor layer sequence includes a first semiconductor layer, a second semiconductor layer and an active layer, and further includes a first mesa and a second mesa. The first mesa has a current blocking structure adjacent to the second mesa and a current conduction portion located below the current blocking structure. The first semiconductor has a first surface facing away from the active layer, the first mesa is provided with a second surface facing away from the first surface, a distance between the second surface and the first surface is greater than or equal to a half of a thickness of the first semiconductor layer, and the current conduction portion has a height in a thickness direction of the semiconductor layer sequence being ? to ½ of the thickness of the first semiconductor layer. The light-emitting diode can improve carrier injection efficiency.

Abstract: An industrial Internet of Things (IoT) of integrating centralized platforms and rear sub-platforms, comprising a user platform, a service platform, a management platform, a sensor network platform, and an object platform interacting in sequence.

Abstract: Method for retrieving target data based on Industrial Internet of Things (IoT), comprises: dividing production line devices and device data collectors of an object platform into a plurality of target objects in different process sequences according to processes of manufacturing an assembly line product, and collecting real-time data of a production line device of a corresponding process; each sub platform of a sensor network platform corresponding to target object data of each of different process sequences, the target object data including threshold data of a production line device stored in each sub platform database and real-time data collected by the device data collector; and in response to a determination that the real-time data of the production line device is greater than the threshold data, retrieving the target object data in a corresponding sub platform database, packaging the target data into packaged data and transmitting the packaged data to a general platform of the sensor network platform.

Abstract: A thermal-power power electronic direct-hung energy-storage plant backup power system includes a thermal-power grid connection startup/standby unit, a power electronic energy-storage switching unit and a thermal-power plant unit. The thermal-power grid connection startup/standby unit is connected to the power electronic energy-storage switching unit and the thermal-power plant unit, respectively. The power electronic energy-storage switching unit is connected to the thermal-power plant unit.

Abstract: Provided are a method for controlling a full bus load to discharge in a household electrical appliance and related apparatuses. In the method, in response to determining that a half bus load is turned on and a full bus load is turned off, a voltage difference between a first DC power and a second DC power is determined to obtain a voltage difference. The first DC power and the second DC power are obtained by converting three-phase power through a three-level active PFC unit. Subsequent to the voltage difference between the first DC power and the second DC power being determined, a full bus load is controlled to be turned on or off based on the voltage difference to stabilize a half bus voltage in a predetermined voltage interval.

Abstract: Provided are a three-phase power conversion circuit for a household electrical appliance, a household electrical appliance, and a power-on control method for a household electrical appliance. The three-phase power conversion circuit includes a three-level active PFC unit, at least two power-on units, and a control unit. The three-phase power, subsequent to being converted by the three-level active PFC unit, obtains a first DC power and a second DC power to supply power to corresponding loads. The power-on unit is arranged at input terminals of the three-level active PFC unit to buffer a device in the three-level active PFC unit when the three-level active PFC unit is powered on. A first controllable switch module and a second controllable switch module in the power-on unit and the three-level active PFC unit are controlled by the control unit to complete buffering.

Abstract: The present disclosure provides a method, an Internet of Things system, and a medium for smart customer service management of a smart gas call center. The method includes: obtaining gas usage data; generating, based on the gas usage data, a predicted call feature of a smart gas call center within a target time period; generating, based on the predicted call feature, at least one group of candidate seat features; performing at least one round of iterative optimization on the at least one group of candidate seat features, and determining a preferred seat feature of the smart gas call center within the target time period; wherein the iterative optimization includes: calculating an evaluation value of the at least one group of candidate seat features; and performing an elimination screening on the evaluation value; and transmitting the preferred seat feature to a terminal of the smart gas call center.

Abstract: An industrial internet of things with independent management platform and control methods thereof are provided. The service platform and sensor network platform use a centralized arrangement, and the management platform uses an independent arrangement. When the management platform receives sensing detection data transmitted by the object platform, the sensing detection data is presented to the user platform after being processed by a sub-platform. When the management platform sends a control command to the object platform, a control parameter of a type of production line stage is calculated by a corresponding sub-platform and sent to the object platform by the sub-platform.

Abstract: A display module and a seamless splicing display device are disclosed. The display module includes: a display panel including a central display area and a bezel area adjacent to the central display area, wherein the display panel is provided with a bezel driving circuit and an array substrate driving circuit; a compensation display component disposed on the display panel, located in the bezel area, and electrically connected with the bezel driving circuit; and a metal wiring located on a lateral surface of the display panel and connected with the bezel driving circuit and the array substrate driving circuit.

Abstract: The present disclosure discloses an industrial Internet of Things for intelligent control of filling production, including a user platform, a service platform, a management platform, a sensor network platform, and an object platform interacting in sequence, wherein the service platform is provided with a plurality of independent service sub-platforms; the management platform is provided with a general management platform and a plurality of independent management sub-platforms, the management sub-platforms interacting with the general management platform, and the management sub-platforms interacting with the corresponding service sub-platforms; and the sensor network platform is provided with a general sensor network platform and a plurality of independent sensor network sub-platforms, the sensor network sub-platforms interacting with the general sensor network platform, and the general sensor network platform interacting with the general management platform.

Abstract: The present disclosure provides a method for evaluating a pipeline cleaning solution based on smart gas and an Internet of Things system. The method comprises: obtaining an operation feature of at least one gas pipeline and inspection data of the at least one gas pipeline; determining an area to be cleaned and an area feature of the area to be cleaned; generating at least one candidate pipeline cleaning solution based on the area feature of the area to be cleaned; processing each of the at least one candidate pipeline cleaning solution and the area feature through a pipeline cleaning effect prediction model to determine a pipeline cleaning effect of each of the at least one candidate pipeline cleaning solution; determining a pipeline cleaning solution based on the pipeline cleaning effect; and evaluating a pipeline cleaning effect of the pipeline cleaning solution based on an implementation of the pipeline cleaning solution.

Abstract: The present disclosure discloses a method for determining an abnormal device in a process of measuring energy of natural gas based on Internet of Things (IOT). The method may include obtaining a natural gas detection parameter detected by at least one detection device via a sense network platform in response to a query request; determining first energy data and second energy data by processing the natural gas detection parameter; determining whether the abnormal device exists by comparing the first energy data and the second energy data; in response to determining that the abnormal device exists, for each detection device, determining a probability that the detection device is abnormal based on related information of the detection device, the first energy data, and the second energy data; and determining the abnormal device based on the probability that the detection device is abnormal.

Abstract: The present disclosure provides a display panel, a method for preparing the same, and a display device. The display panel includes pixel units distributed in an array in a display area, where the pixel units include sub-pixels, at least one of which has a maximum grayscale value voltage different from a maximum grayscale value voltage of the other sub-pixel; and a switching circuit including switching units on a side of the display area, where one end of the switching unit is connected to a data line. In two adjacent columns of pixel units, two sub-pixels having the same maximum grayscale value voltage are connected to two adjacent switching units through data lines, respectively.

Abstract: A heat dissipation device with a heat-insulating channel includes a thermal conductive substrate, multiple heat dissipation fins stacked with spacing from one another on the thermal conductive substrate, and at least one insulation guiding component. The heat dissipation fins have at least one configuration space for the insulation guiding component to be installed, a bottom portion, two sides upwardly extended from the bottom portion, and a channel enclosed by the bottom portion and two sides. A width of the channel is at least greater than the spacing between any two adjacent heat dissipation fins.

Abstract: The present disclosure provides a detecting apparatus, system, and method, and belongs to the technical field of detection. The detecting apparatus includes a beam splitting device, a first dichroic mirror, an objective lens, a fluorescence guiding device, and an imaging system including a plurality of imaging devices.

Abstract: The present disclosure discloses an industrial Internet of things with a sensor network platform in a front sub platform type, comprising: a user platform, a service platform, a management platform, a sensor network platform, and an object platform which are interacted sequentially. The sensor network platform adopts front sub platform layout, which can process data for different target objects, and then summarize data, so as to reduce the data processing capacity of entire sensor network platform. The management platform is arranged independently to form multiple independent data processing channels of the same or different. The gateway on each communication network shares part of the calculation for the management platform, effectively reducing the calculation pressure of the management platform, and ensuring that the data is transmitted according to a specific path or processed by a specific server, so as to ensure the safety and independence of the data.

Abstract: An optical system includes an objective lens module, an image inverting module, and an eyepiece module. The objective lens module includes a first lens group, a second lens group, a third lens group, a fourth lens group, and a fifth lens group. The optical system satisfies at least one of the following conditions: 0.45?LG4D/LG1D?0.8; 0.015 mm?1?1/fG3?0.045 mm?1; 0.045 mm?1?|1/fG4|?0.07 mm?1; 0.35?|fG4/fG3|?0.75; 0.15?fG1/f?1.6; wherein LG4D is an effective optical diameter of the fourth lens group, LG1D is an effective optical diameter of the first lens group, fG1 is an effective focal length of the first lens group, fG3 is an effective focal length of the third lens group, fG4 is an effective focal length of the fourth lens group, and f is an effective focal length of the objective lens module.

Abstract: The embodiments of the disclosure provide a method, apparatus, device and storage medium for presenting information, which relate to the technical field of computers. The method includes: obtaining object search information, in response to the object search information being object category information, determining a target object category corresponding to the object search information, and presenting object information of a plurality of target objects corresponding to the target object category in a search result presentation page; where all the plurality of target objects are different, and object information of a target object includes object attribute information and image resource information of the target object. By employing the above technical solution, when the user is searching the object category, object information of a plurality of target objects different from each other corresponding to the target object category is presented in the search result page.

Abstract: The disclosure provides an Internet of Things system and a method for managing a people flow of a public place in a smart city. The method may comprise obtaining pedestrian distribution information in a preset area during a current time period via network from a storage device; determining, by processing the pedestrian distribution information through an area location prediction model, at least one area location in the preset area for a future time period, a population flow load of the area location being greater than a first threshold, wherein the area location prediction model includes a graph neural network model, a graph input into the graph neural network model includes at least two nodes and at least one edge; generating, based on the area location, prompt information; and feedbacking the prompt information to a user terminal of a user platform through a service platform via the network.