Abstract: A refrigeration device and a vehicle are provided, and relate to the technical field of vehicles. The refrigeration device is disposed in a trunk of the vehicle, and the refrigeration device includes: a semiconductor refrigeration sheet, having a cold end and a hot end which are disposed oppositely, wherein the hot end of the semiconductor refrigeration sheet is attached to an inner wall of the trunk, and the cold end of the semiconductor refrigeration sheet is disposed toward an inner space of the trunk.

Abstract: A vehicle door, a vehicle and a driving training system are provided, and relates to the technical field of driving training, wherein the vehicle door includes: a door body, wherein a door handle is provided on an inner side of the door body; and a target object detection apparatus, provided on the inner side of the door body, wherein the target object detection apparatus is configured for detecting whether there is a target object at a target area under a preset condition, and the target area is formed on the inner side of the door body and spaced apart from the door handle by a preset distance.

Abstract: A braking method for a vehicle, an electronic device and a storage medium are provided, and relates to the field of intelligent vehicles. The method includes: generating, in a case where a braking trigger signal is received, a first braking control signal according to a first braking parameter of the vehicle, wherein the first braking control signal is used to control a braking traction mechanism to draw a brake pedal according to the first braking parameter, to perform braking; collecting braking data of a current braking process; evaluating a braking effect of the current braking process according to the collected braking data; and determining whether to adjust the first braking parameter according to a result of the evaluating, wherein the determined first braking parameter is used for a next braking process of the vehicle.

Abstract: A method and an apparatus for adjusting a driving training course, an electronic device, and a storage medium are provided, and relates to the field of driving information management, driving training course optimization, and the like. The method includes: collecting current training data in a current training course of a learner driver; acquiring historical training data of the learner driver; comparing the current training data and the historical training data with a corresponding evaluation criterion to obtain an evaluation result; and adjusting a subsequent training course of the learner driver according to the evaluation result.

Abstract: The present disclosure relates to a shimming device. The shimming device may include at least one supporting component each of which is configured with a plurality of wire groove groups. Each of the plurality of wire groove groups may include a plurality of wire grooves. Each of the plurality of wire grooves may be in a closed shape. The closed shapes formed by the plurality of wire grooves may be nested. The shimming device may further include wires arranged in the wire grooves of the plurality of wire groove groups of the at least one supporting component.

Abstract: A method includes selecting one of a first safety architecture and a second safety architecture of a protection system configured to monitor a protection system. The protection system includes an input base, a controller base and an output base. The selecting includes selecting one of a first voting logic associated with the first safety architecture and a second voting logic associated with the second architecture. The controller base is configured to execute the selected voting logic. The method also includes configuring the protection system including a plurality of processing channels to operate in one of a first configuration associated with the first safety architecture and a second configuration associated with the second safety architecture. The configuring includes altering the number of processing channels releasably coupled to the protection system and hardware relay output in the protection system.

Abstract: Aspects of this disclosure are directed to an artificial intelligence (AI)-based named entity recognition (NER) method and apparatus, an electronic device, and a non-transitory computer-readable storage medium. The method can include performing, by an electronic device, vector transformation processing on text elements in a to-be-recognized text to obtain text representations of the text elements, and constructing a candidate entity phrase according to text elements that are in the to-be-recognized text and whose total quantity does not exceed an element quantity threshold.

Abstract: A method for assisting driving training, and an electronic device, relating to the field of computer technology, and in particular, to the field of mobile control technology, are provided. The method includes: acquiring training situations of a plurality of teaching vehicles from a server: displaying the training situations of the plurality of teaching vehicles; and generating a control command for driving training according to an instruction of a trainer in a training site; and sending the control command to a vehicle-mounted terminal of a corresponding teaching vehicle. The technical solution may be applied to the training site, and controls the vehicle-mounted terminal based on the mobile device, thereby realizing mobile driving training and improving driving training effects.

Abstract: A method for intelligently scheduling teaching of a driving school, an electronic device, and a storage medium are provided, relate to the technical field of computers, and in particular to the technical field of intelligent scheduling. The method includes: receiving a reservation request initiated by a student of the driving school; determining a status of a training resource reserved by the reservation request; searching for a training resource in an idle status, in a case where the reserved training resource is in a non-idle status; and adjusting the reserved training resource to a training resource in the idle status.

Abstract: An as-synthesized microporous material having a CHA structure and containing a first and a second organic structure directing agent (OSDA), wherein the first OSDA has the following general structure of the quaternary ammonium cation is disclosed: A microporous crystalline material made from the as-synthesized material is also disclosed. A method of making microporous crystalline material using combined organic structure directing agents is also disclosed. A method of selective catalytic reduction of nitrogen oxides in exhaust gas that comprises contacting exhaust gases, typically in the presence of ammonia, urea, an ammonia generating compound, or a hydrocarbon compound, with an article comprising the disclosed microporous crystalline is further disclosed.

Abstract: A method for testing sensing effect, a moving apparatus, an electronic device, a storage medium, and a system for testing a sensing effect are provided, and relate to the field of intelligent vehicles. The method includes: controlling a moving apparatus to move within a preset range of a vehicle in accordance with a preset route, wherein the moving apparatus carries at least one type of sensing target, and a sensing device to be tested is installed on the vehicle; generating true reference data according to movement data of the movement apparatus and sensing target information on the sensing target; acquiring sensing result data of the sensing target, generated by the sensing device to be tested; and testing the sensing effect of the sensing device to be tested according to the true reference data and the sensing result data.

Abstract: Disclosed is an oral treatment guide plate, including a guide plate body (1), a saliva suction main tube (2) and a plurality of saliva suction branch tubes (3, 4); a notch (11) is formed on the guide plate body (1), and the saliva suction branch tubes (3, 4) are arranged on both sides of the notch (11) respectively; outlets of the plurality of saliva suction branch tubes (3, 4) are connected to an inlet of the saliva suction main tube (2), and an outlet of the saliva suction main tube (2) is configured to connect with a suction device. By arranging the saliva suction branch tubes (3, 4) on both sides of the notch (11), saliva, blood and cleaning fluid produced in the oral cavity treatment process may be discharged in time, and thus the saliva suction effect and efficiency are improved; pollution caused by fluid entering a treatment site is prevented, and the saliva suction branch tubes (3, 4) do not occupy the surgical operation space, avoiding the impact on the operation field of view.

Abstract: A metal-containing chabazite zeolite, which has an FTIR peak area ratio between the peak at 900-1300 cm?1 (Si—O—Si asymmetric stretch) and the peak at 765-845 cm?1 (˜805 cm?1 is Si—O—Si symmetric stretch) of at least 55. A method for preparing metal-containing CHA zeolites with high SCR activity at low reaction temperatures from alkali cation-free reaction mixtures that contain the three OSDA structures: metal-polyamine, N,N,N-trimethyl-1-adamantyl ammonium (TMAda+) and TMAOH. The metal-containing CHA zeolites produced by the disclosed method can be identified by XRD, FTIR spectroscopy, FT-VIS spectroscopy, and scanning electron microscopy. A method of selective catalytic reduction of NOx in exhaust gas using the material described herein is also disclosed.

Abstract: Embodiments of the present application provide a calibration method and device for dental implant navigation surgery, and a tracking method and device for dental implant navigation surgery. The calibration method comprises: (110) obtaining a position of a scanning area (304) relative to a second visual marker (306) based on a spatial position of a first visual marker (305) disposed on a scanning device (302), a spatial position of the second visual marker (306) disposed on a surgical area (303), and a scanning position of the scanning area (304) obtained by scanning with the scanning device (302); and (120) registering the position of the scanning area (304) relative to the second visual marker (306) with a three-dimensional scene to obtain a transformation matrix, and applying the transformation matrix to the tracking of a surgical instrument.

Abstract: Embodiments of the present application provide a dental robot and an oral navigation method. The dental robot comprises a tandem positioning arm, wherein the tandem positioning arm comprises a pedestal, several positioning arms and a jacket, and the jacket is configured to clamp surgical instruments; the pedestal, the several positioning arms and the jacket are connected in series in sequence by rotary joints; a joint angle measuring device is mounted at each of the rotary joints. According to the dental robot and the oral navigation method provided by the present application, by the lightweight of the tandem positioning arm, the volume and weight of the dental robot system are reduced, which improves the practicality of the dental robot in surgical operations.

Abstract: The present invention provides a compressed air artificial wind system including compressed air storage device, compressed air discharge device, artificial wind system base and controller; also a firefighting equipment including an extinguishing agent tank and the compressed air artificial wind system. The compressed air storage device includes row tubes and manifolds for production and storage of high/ultra-high pressure compressed air; the compressed air discharge device includes intake pipe, expansion chamber, Laval nozzle and wind-blowing tube; the artificial wind system base is built as an infrastructure. Large quantity of high/ultra-high pressure compressed air under control from the compressed air storage device and through the compressed air discharge device to spray out generating artificial wind with large air volume and high wind speed for meteorological control, forest firefighting, air defence and coastal defence, respectively.

Abstract: The present invention provides a system of using compressed air as force source, comprising: compressed air jet engines, which use high/ultra-high pressure compressed air as a jet working medium, a compressed air production/supply device to economically, environmentally and quantitatively produce, store and supply the high/ultra-high pressure compressed air, and a controller. The compressed air jet engines are equipped on an airplane, rocket, submarine, train, or other moving carrier for aviation, aerospace, navigation and/or ground travel, comprising an air tank and air engines for generating power. The air engines comprise a main air engine for generating thrust, and a plurality of auxiliary air engines for reducing the air (or seawater) resistance and the sliding friction with air (or seawater) during the carrier movement to facilitate the speed-rising and energy-saving, and for improving the lift force of airplane wings to facilitate airplane short-range or vertical take-off/landing, etc.

Abstract: Embodiments of the present application provides a method and a system for evaluating implanting precision of an implant. The method includes: obtaining a second surface model of an oral cavity containing a target implant; obtaining an actual position of the target implant in a first three-dimensional model based on the second surface model, the first three-dimensional model and a first surface model; and obtaining an evaluation result of the implanting precision of the target implant based on the actual position of the target implant in the first three-dimensional model and an predicted position of the target implant in the first three-dimensional model. By means of the method and system according to the embodiments of the present application, the second surface model of the oral cavity containing the target implant is obtained after implantation is completed using an oral digital scanning device to obtain the evaluation result of the implanting precision of an implant of the target implant.

Abstract: A registration method and an electronic device for visual navigation in dental implant surgery, comprising obtaining a three-dimensional model of a target tooth to be registered, an entity model of the target tooth and a second model of the target tooth, obtaining a position and attitude matrix of the three-dimensional model in a virtual coordinate system according to the coordinates of at least three points on a three-dimensional model of a substrate after the registration of the three-dimensional model in the virtual coordinate system, mounting the entity model of the target tooth onto a registration standard board, obtaining a position and attitude matrix of the entity model in the visual coordinate system according to three optical marks and the points on the entity model corresponding to the three points, and obtaining a correspondence between the virtual coordinate system and the visual coordinate system according to two position and attitude matrices.

Abstract: The disclosure relates to compressors for heat exchange systems, heat exchange systems having such compressors, and methods for controlling operation of compressors. The compressor includes a drive device for driving the compressor and having at least a first and second working conditions. An output power of the drive device under the second working condition is greater than an output power under the first working condition. The compressor has at least one upload/download flow path configured to be opened before the drive device is switched from the first working condition to the second working condition to reduce a suction flow of the compressor until current operating parameters of the compressor reach preset values, after which the switching is performed, and to increase the suction flow until the compressor is in a required working state, after the switching is completed.