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: Disclosed is a denture tray for visual marking and a manufacturing method thereof. The method comprises: establishing a three-dimensional model of a target dentition of a target patient; obtaining a three-dimensional model of a substrate of a denture tray based on the three-dimensional model of the target dentition; providing a through hole at a preset position on the three-dimensional model of the substrate of the denture tray; establishing a three-dimensional model of a fixed connection portion on an outer side surface of the three-dimensional model of the substrate of the denture tray to form a three-dimensional model of the denture tray, wherein the three-dimensional model of the fixed connection portion is integrally connected with the three-dimensional model of the substrate of the denture tray; and manufacturing the denture tray based on the three-dimensional model of the denture tray.

Abstract: This application provides a transmission method and a data transmission apparatus, so as to avoid out-of-order of data packets.

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: Systems and methods for rule optimization are disclosed. In accordance with aspects, a method may include providing a segment rule, where the segment rule uses a machine learning model score associated with a data record and a scaler value to evaluate data records and the segment rule is configured to evaluate data records categorized into a corresponding segment of the segment rule by attributes of the data records; receiving, at the segment rule, a categorized set of data records, wherein each data record in the categorized set of data records is categorized in the corresponding segment of the segment rule based on attributes of the data records; iteratively evaluating, by the segment rule, each received data record with a range of scaler values, where the iteratively evaluating produces a plurality of outputs of the segment rule; and determining an optimal output from the plurality of outputs.

Abstract: A fuel injector is disclosed. The fuel injector may have an injector body having a fuel inlet and at least one orifice. The fuel injector may also have a first check valve member. The first check valve member may be selectively movable to fluidly block a first flow of fuel from the fuel inlet to the at least one orifice. The fuel injector may have a second check valve member. The second check valve member may be selectively movable to fluidly block a second flow of fuel from the fuel inlet to the at least one orifice. The fuel injector may also have a control valve assembly. The control valve assembly may be configured to selectively operate either the first check valve or both the first check valve and the second check valve to fluidly connect the fuel inlet and the at least one orifice.

Abstract: Systems and methods for frequent machine learning model retraining and rule optimization are disclosed. In accordance with aspects, a method may include retrieving, from a data store, a plurality of datasets; generating a challenger machine learning model, wherein the challenger machine learning model is generated from a production machine learning model, and includes variables and variable weights included in the production machine learning model; training the challenger machine learning model with the plurality of datasets; adjusting the variable weights of the challenger machine learning model based on patterns in the plurality of datasets determined by the challenger machine learning model; performing a comparative analysis between the challenger model and the production model; and promoting the challenger model to a production environment based on the comparative analysis.

Abstract: Systems and methods for frequent machine learning model retraining and rule optimization are disclosed. In accordance with aspects, a method may include generating a challenger machine learning model based on a production machine learning model; training the challenger machine learning model on a plurality of datasets; scoring historical data with the challenger machine learning model, wherein the scoring produces a respective score for each record of a plurality of records in the historical data; determining that the challenger model performs within predetermined thresholds based on the scoring; selecting an optimal scaler value for a rule based on execution of the rule with a range of scaler values applied to the respective score for each record of the plurality of records evaluated by the rule; determining that the optimal scaler value outperforms a production scaler value; and promoting the challenger model and the optimal scaler value to a production environment.

Abstract: A fuel injector capable of injecting a plurality of different fuels in a single fuel injection event includes a body including a primary fuel path and a pilot fuel path and a first plunger in fluid communication with the pilot fuel path. The fuel injector also includes a second plunger in fluid communication with the primary fuel path and with the pilot fuel path, a hydraulic control chamber within the pilot fuel path, and an injection valve at which the primary fuel path and the pilot fuel path connect to each other.

Abstract: A fully variable electro-hydraulic valve system having a buffering function, comprising: a camshaft (101), a valve assembly (106), a sliding sleeve (103), a spiral shaft (102), a piston (105), and a position restoring spring (104). The sliding sleeve (103) is fixed relative to an engine, the piston (105) abuts against the valve assembly (106), and the spiral shaft (102) is controlled by a cam surface of the camshaft (101) in the axial direction. sliding sleeve (103) is provided with a buffering oil hole (123) that communicates with a buffering cavity (R) and with a low-pressure oil circuit of the engine by means of a throttling device (124). When a valve is going to be seated, the piston collides with a buffering ring (121), and due to the effect of the throttling device, engine oil within the buffering cavity has a damping effect on the movement of the buffering ring.

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 compression release engine in-cylinder braking system, comprising a valve mechanism, an oil cylinder device, an oil pump device, and an oil supply device. The oil cylinder device and the oil pump device of each air cylinder communicate with each other through a pressure transmission oil circuit, which communicates with the oil supply device through a low-pressure relief valve. An air release valve is arranged at the high end of an oil circuit system. During in-cylinder braking, the air release valve is closed, an electromagnetic reversing valve is energized, engine oil having a pressure of P1 is supplied to the pressure transmission oil circuit, and a cam abuts against and pushes the oil pump device to pump high-pressure oil to the oil cylinder device, so as to push a rocker arm to open a valve, thereby achieving in-cylinder braking.

Abstract: An apparatus of coating a filter substrate comprising a plurality of channels and an apparatus is disclosed. The apparatus comprises: (i) a containment means for receiving a pre-determined amount of the liquid; and (ii) a liquid dosing head arranged to dispense the pre-determined amount of the liquid into the containment means over an upper end of the filter substrate. The containment means is locatable at an upper end of the filter substrate; and the liquid dosing head comprises a plurality of apertures for dispensing the liquid onto the upper end of the filter substrate.

Abstract: A high-specific surface area and super-hydrophilic gradient boron-doped diamond electrode is disclosed. The electrode directly uses a substrate as an electrode matrix; or a transition layer is disposed on a surface of the substrate and used as the electrode matrix. A gradient boron-doped diamond layer is disposed on a surface of the electrode matrix, and a contact angle of the electrode is ?<40°. The gradient boron-doped diamond layer includes: a gradient boron-doped diamond bottom layer, a gradient boron-doped diamond middle layer, and a gradient boron-doped diamond top layer, a boron content of which gradually increases, so the gradient boron-doped diamond layer has high adhesion, high corrosion resistance, and high catalytic activity.

Abstract: A boron-doped diamond electrode with an ultra-high specific surface area, and a preparation method therefor and the application thereof are provided. The boron-doped diamond electrode includes a substrate and an electrode working layer arranged on a surface thereof, the substrate is polysilicon or monocrystal silicon with a high specific surface area, and the electrode working layer is a boron-doped diamond layer. The polysilicon with a high specific surface area is obtained by anisotropIc etching and/or isotropic etching, and the monocrystal silicon with a high specific surface area is obtained by anisotropic etching. The boron-doped diamond layer includes a highly conductive layer, a corrosion-resistant layer, and a strongly electrocatalytically active layer, which have different boron contents.

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: An electrical connector configured to connect terminals of battery units in a battery pack includes a body made of an electrically conductive material, the body having at least a first body part and a second body part, and at least one terminal connection part disposed adjacent the first body part configured to connect to the terminal of the battery unit. The at least one terminal connection part includes a first connection component and a second connection component spaced apart from each other. Each of the first and second connection components includes a contact part for contacting the terminal of the battery unit, and a stem connecting the contact part to the body. The stem has a smaller cross section than the contact part. The stem is operable as a fuse configured to cut off an excessively high current.