Abstract: An optical waveguide system and an augmented reality device are disclosed and have advantages of reducing the light leakage rate and improving the light energy efficiency. The optical waveguide system comprises an optical waveguide, the optical waveguide comprises a first side face and a second side face opposite each other; the first side face is provided with a grating; the second side face is provided with a light-leakage prevention element configured to reduce light emitted from the second side face. The light-leakage prevention element may reflect, diffract or absorb light incident to the light-leakage prevention element. Therefore, light emitted from the second side face of the optical waveguide (1) can be reduced, that is, a light leakage phenomenon is reduced; and the light can also be reflected to the grating by reflection or diffraction, thereby improving the utilization rate of light energy, that is, improving the light efficiency.

Abstract: The present disclosure discloses a high-whiteness polyimide microfiber and a preparation method thereof and use. The polyimide fiber includes polyimide obtained from the reaction of wholly alicyclic dianhydride HTDA and an aromatic diamine monomer containing methyl or trifluoromethyl by chemical imidization. In the present disclosure, the polyimide microfiber has both excellent heat-resistant stability and spinning film-forming property, and the fabric has ultra-high whiteness. The microfiber fabric prepared from the polyimide fiber may be used as a component with high-temperature resistant and high-whiteness in personal protective equipment such as mask and protective clothing, and also may be used as an electronic component in the high-tech field such as aerospace, optoelectronic, microelectronic and automobile.

Abstract: Provided is a kit for calibration of an isothermal polymerase chain reaction (PCR) analyzer and use thereof. The kit includes a standard substance, an amplification primer set, a reaction buffer, a polymerase, a dye, and a negative control. The standard substance is a DNA plasmid with a gradient concentration of 100 copies/?L to 106 copies/?L; the amplification primer set has nucleotide sequences shown in SEQ ID NO: 1 to SEQ ID NO: 6; the polymerase is a Bst DNA polymerase; and the dye is a loop-mediated isothermal amplification (LAMP) fluorescent dye (with excitation: 485 nm, emission: 498 nm, and a detection channel of SYBR® Green I or a FAM channel). The kit and a technology for calibration of an isothermal PCR instrument meet calibration demands of the isothermal PCR instrument and fill a technical gap.

Abstract: A game control method is provided. The method comprises: acquiring the distance between a game character and a shielding face, and an included angle between the orientation of the game character and a vertical line of the shielding face; displaying a bunker-entering control on a graphical user interface when the distance is smaller than or equal to a first preset distance and the included angle is smaller than or equal to a preset included angle; and in response to a selection operation for the bunker-entering control, controlling the game character to move to a shielding area corresponding to the shielding face, such that a bunker shields the game character.

Abstract: A uterine manipulator device includes: an elongated cannulated tube comprising a proximal end and a distal end; a cervical cup having a top proximal portion of a first diameter and a base distal portion of a second smaller diameter, wherein: the base distal portion includes a hole formed therein having a perimeter including a distal end and a proximal end, and including a longitudinal axis positioned therethrough; one of the proximal end of the perimeter and the distal end of the perimeter is angled away from the longitudinal axis and the other of the proximal end of the perimeter and the distal end of the perimeter is in line with the longitudinal axis; and the elongated cannulated tube is positioned through the hole in the cervical cup.

Abstract: A system and mechanism for performing semantic searching of unstructured data such as, for example, audio, images, and video. The system processes raw input data (e.g., presentation data) to determine data patterns and organizes a semantic space around those data patterns. Queries are then processed to determine data patterns in the semantic space they may be associated with and used in searching the semantic space.

Abstract: Disclosed is a drug for lowing blood glucose and/or improving diabetic complications, belonging to the technical field of biomedicine. According to the present disclosure, the drug for lowing blood glucose and/or improving diabetic complications is nanoparticles formed by a component containing lipoic acid and/or lipoic acid derivatives. The lipoic acid nanoparticles not only can control blood glucose safely and long-term, but also can realize the prevention/treatment of diabetic complications through lowering blood glucose and inhibiting oxidative stress. This drug has good clinical prospect.

Abstract: A method includes selecting, by one or more servers, a digital component to be presented in an application executed at a client device; obtaining, by the one or more servers, attributes of the digital component, including at least one or more of a destination network location to which the digital component redirects users in response to interaction with the digital component and a reporting network location to which the interaction with the digital component is reported; after selecting the digital component and obtaining the attributes of the digital component, selecting, by the one or more servers and based on the obtained attributes, a config file that specifies a set of operations to be performed by the client device that presents the digital component; and transmitting, to the client device, a payload that includes information specifying the digital component to be presented in the application and the config file that, upon execution by the client device, causes the client device to perform the set of op

Abstract: Endoscopic devices are disclosed for viewing and/or performing a surgery on a patient's organ, such as a uterus. In an embodiment, the endoscopic deice includes a housing, a cannula, an imaging system, and a flexible printed circuit (FPC). The cannula is configured for insertion through a cervix into a uterus. The cannula has a lumen that extends from a proximal end of the cannula to a distal end of the cannula. The proximal end of the cannula is secured within the housing. The imaging system is located at a distal end of the cannula and includes a camera and one or more light-emitting diodes (LEDs). The FPC extends within the lumen of the cannula and electrically connects the camera and the LEDs to electrical components located in the housing. The lumen is configured to provide a passage for a working tool.

Abstract: A head-up display system and a vehicle are disclosed, the head-up display system comprises a light source and an optical guide assembly (1); an incident light emitted from the light source is incident into the optical guide assembly (1); the optical guide assembly (1) receives the incident light and outputs an exit light; the optical guide assembly (1) comprises at least two optical guides, and the incident light is coupled in and coupled out by the at least two optical guides and then is exited to form at least two divided field of views. By replacing the light guide (4) in the prior art with the optical guide assembly (1), the difficulty for processing a large area optical guide is effectively reduced, and a purpose of expanding an angle of field of view of an HUD and an eyebox is achieved.

Abstract: Methods and systems are provided for a vehicle. In one example, a method may include acquiring measurements from at least one exhaust emission sensor of the vehicle, the exhaust emission sensor positioned to measure one of NOx, NH3, and O2 levels in exhaust gas of the vehicle. The measurements may be input into a machine learning model trained to output a predicted real-time amount of at least one exhaust gas constituent in the exhaust gas and operations of an emissions aftertreatment system may be assessed and adjusted based on the predicted real-time amount of the at least one exhaust gas constituent.

Abstract: The deluge valve assembly includes: a deluge valve, in which the deluge valve includes a water inlet cavity, a water outlet cavity, and a diaphragm cavity. The water inlet cavity is suitable for communication with the fire protection pipe network so as to make water from the fire protection pipe network flow into the water inlet cavity; a water inlet pipeline, in which an inlet of the water inlet pipeline is connected with the water inlet cavity, and an outlet of the water inlet pipeline is connected with the diaphragm cavity; a water outlet pipeline, in which an inlet of the water outlet pipeline is connected with the diaphragm cavity; reinforcement members, in which at least two of the deluge valve, the water inlet pipeline, and the water outlet pipeline are connected through the reinforcement members. The deluge valve assembly has advantages of good performance in anti-vibration and reliability.

Abstract: Endoscopic devices are disclosed for viewing and/or performing a surgery on a patient's organ, such as a uterus. In an embodiment, the endoscopic deice includes a housing, a cannula, an imaging system, and a flexible printed circuit (FPC). The cannula is configured for insertion through a cervix into a uterus. The cannula has a lumen that extends from a proximal end of the cannula to a distal end of the cannula. The proximal end of the cannula is secured within the housing. The imaging system is located at a distal end of the cannula and includes a camera and one or more light-emitting diodes (LEDs). The FPC extends within the lumen of the cannula and electrically connects the camera and the LEDs to electrical components located in the housing. The lumen is configured to provide a passage for a working tool.

Abstract: The application relates to a swinging device, underwater bionic propeller and use thereof. The swinging device can include a swing mechanism including a swing arm. A driving end of a steering mechanism can be in transmission connection with the swing arm so as to drive the swing arm to swing in a reciprocating manner. A reciprocating mechanism can be provided which is in transmission connection with a fixed end of a steering driving component so as to drive the swing arm to rotate in a reciprocating manner by driving the steering mechanism to move. The steering mechanism drives the swing arm independently and changes the swinging area that the reciprocating mechanism drives the swing arm to swing in a reciprocating manner.

Abstract: A backbone for use in an endoscope can include a plurality of links of which adjacent pairs are interconnected with each other. Each of the plurality of links can include an inner link segment and an outer link segment. One of the inner link segment and the outer link segment can include a pivot member and a socket. The other of the inner link segment and the outer link segment can include a locking member and a recess. The pivot member of a first link of the plurality of links can be received into the socket of a second link of the plurality of links. The locking member of the first link can be received into the recess of the second link.

Abstract: Disclosed are apparatuses, systems, and techniques to perform and facilitate secure ladder computational operations whose iterative execution depends on secret values associated with input data. Disclosed embodiments balance execution of various iterations in a way that is balanced for different secret values, significantly reducing vulnerability of ladder computations to adversarial side-channel attacks.

Abstract: Various methods, apparatuses/systems, and media for synthetic text generation are disclosed. A processor implements a text style transfer algorithm to first input data to generate complaints data from non-complaint emails data associated with a plurality non-complaint emails; converts the plurality of non-complaint emails into a first set of complaint emails based on implementing the text style transfer algorithm; implements a text generation model algorithm to second input data to generate a second set of complaint emails from a plurality of complaint emails; generates a set of synthetic complaint emails based on the generated first set of complaint emails and the second set of complaint emails; trains a model based on the generated synthetic complaint emails; and applies the trained model to a new set of emails to resolve class imbalance in automatic complaint identification from the new set of emails.

Abstract: A frequency multiplier circuit includes a first multiplier circuit to generate a first digital value representing a received reference signal having a reference frequency and reference phase, the multiplier circuit to multiply the first digital value by a multiplier value. Comparison circuitry compares the first digital value to an output digital value representing an output signal having an output frequency and an output phase, the comparison circuitry to generate an error signal based on the comparison. A programmable loop filter generates a control signal based at least in part on the error signal. A frequency generation circuit produces the output signal having the output frequency and phase. A phase-to-digital converter generates and feeds the output digital value to the phase comparison circuitry. A programmable transition controller controls a transitioning frequency relationship between a first signal frequency of a first locked output signal and a desired second signal frequency.

Abstract: A method for controlling a game scene includes: displaying a game scene global map of a target game, the game scene global map comprising a plurality of scene regional maps, wherein one of the scene regional maps corresponds to a game scene region of the target game; displaying a target game scene region of one or more target game scene regions of the game scene regions corresponding to a target scene regional map of one or more target scene regional maps of the scene regional maps, in response to an entry trigger operation for the target scene regional map of the scene regional maps; and switching display of the target game scene region to display of the game scene global map, in response to an exit trigger operation for the target game scene region.

Abstract: Disclosed are apparatuses, systems, and techniques to perform and facilitate secure ladder computational operations whose iterative execution depends on secret values associated with input data. Disclosed embodiments use masking factors that re-blind secret data without exposing the unmasked secret data between iterations of the ladder computations. Some disclosed embodiments use Montgomery multiplication techniques to facilitate secret data masking by efficiently avoiding modular division operations. Disclosed embodiments significantly reduce the vulnerability of ladder computations to adversarial side-channel attacks.