Abstract: The present disclosure relates to methods and devices for discovering a Bluetooth device. One example method includes receiving, by a second Bluetooth device, a first broadcast frame from a first Bluetooth device, determining, by the second Bluetooth device, whether the first broadcast frame includes first indication information, and if the first broadcast frame includes the first indication information, sending, by the second Bluetooth device, at least one second broadcast frame within a preset time period after receiving the first broadcast frame The second broadcast frame includes second indication information, and the second indication information is used to instruct a Bluetooth device receiving the second broadcast frame to exchange information with the second Bluetooth device.

Abstract: The present invention provides a thermal insulation composition and a preparation method and application. The thermal insulation composition is composed of aerogel material and organic resin; the composite mass ratio of the aerogel material to the organic resin is 5 wt %:95 wt % to 50 wt %:50 wt %; the porosity of the aerogel material is greater than 95%, the pore diameter of the aerogel material is less than or equal to 100 nm, the particle size of each particle of aerogel material is 5 nm to 20 nm, and the organic resin is filled in the pores of the aerogel material. The thermal insulation module component prepared from the thermal insulation composition has mechanical strength and thermal conductivity at room temperature, and if the battery goes into thermal runaway, the material becomes a heat-insulating material, blocking the heat transfer between battery cells, greatly improving the safety performance of the battery.

Abstract: The present disclosure discloses a latitude-free construction method for a gravity acceleration vector under a swaying base earth system. Firstly, a target function based on output information of an accelerator in a fixed-length sliding window under a swaying base is constructed; secondly, measurement information in a period of time window is used to construct the target function, and gradient descent optimization is used to obtain a rough value of qiib0; and finally, the rough value of qiib0 and an apparent motion of a gravity acceleration vector of an inertial system are used to construct the gravity acceleration vector under the earth coordinate system. The present disclosure makes a key breakthrough for solving the problem of high precision alignment of a ship with unknown latitude under a swaying base.

Abstract: The present invention relates to multilayer composite materials with anisotropic thermal conductivity for high safety pack design. According to the present invention, the multilayer composite material has a sandwich structure, and comprises: an inner layer consisting of an aerogel material which has ultra-low thermal conductivity; and two thermal conduction layers which contain graphene based nano carbon and possess high thermal conductivity, wherein the inner layer is sandwiched by the two thermal conduction layers. When used as a spacer between two neighbor cell, the multi-layer composite material can help to achieve uniform thermal distribution, stop the thermal propagation and act as a spacer to accommodate the volumetric change during charge and discharge.

Abstract: A power control device and method, the method including obtaining, by a terminal device, class of device information of a peer device, determining, by the terminal device, based on the class of device information, a class of device of the peer device, and performing at least one of sending, by the terminal device, in response to the terminal device determining that the class of device of the peer device is a non-preset class of device, data to the peer device at a first transmit power, or sending, by the terminal device, data to the peer device at a second transmit power—in response to the terminal device determining that the class of device of the peer device is a preset class of device, —where the terminal device establishes a Bluetooth connection to the peer device, and the first transmit power is less than the second transmit power.

Abstract: A viewing angle switching method is provided. The viewing angle switching method includes: displaying a first user interface, the first user interface including an environment picture and a viewing angle switching region, the environment picture including a three-dimensional virtual environment observed from a first viewing angle direction by a virtual object, and the viewing angle switching region including a viewing angle jumping element used for viewing angle jumping; receiving a viewing angle jumping signal triggered on a target viewing angle jumping element, the at least one viewing angle jumping element including the target viewing angle jumping element; determining a second viewing angle direction corresponding to the target viewing angle jumping element; and displaying a second user interface, the second user interface including the environment picture of the three-dimensional virtual environment observed from the second viewing angle direction by the virtual object.

Abstract: This application discloses a sound reproduction method performed at a computing device. The method includes: detecting, by the computing device, a sound triggering event that corresponds to a first virtual object, the sound triggering event carrying sound source feature information used for matching a sound source; determining, by the computing device according to the sound source feature information, a sound source position at which the sound source is located, and obtaining a first transmission distance between the sound source position and a first position at which the first virtual object is located; determining, by the terminal according to the first transmission distance, a target sound of the sound source at the first position; and generating, by the terminal, the target sound at the first position in the virtual scene. This application resolves a technical problem that accuracy of sound reproduction is relatively low in a sound reproduction method.

Abstract: A viewing angle switching method is provided. The viewing angle switching method includes: displaying a first user interface, the first user interface including an environment picture and a viewing angle switching region, the environment picture including a three-dimensional virtual environment observed from a first viewing angle direction by a virtual object, and the viewing angle switching region including a viewing angle jumping element used for viewing angle jumping; receiving a viewing angle jumping signal triggered on a target viewing angle jumping element, the at least one viewing angle jumping element including the target viewing angle jumping element; determining a second viewing angle direction corresponding to the target viewing angle jumping element; and displaying a second user interface, the second user interface including the environment picture of the three-dimensional virtual environment observed from the second viewing angle direction by the virtual object.

Abstract: The present disclosure discloses a method for displaying a marker point location performed at an electronic device. In the present disclosure, a marker point location in a global map of a virtual scene is obtained; a target scene area indicated by the marker point location in the virtual scene is determined; a prompt signal is displayed in a viewing angle image of a currently controlled object, the prompt signal being used for prompting a location of the target scene area in the virtual scene, and the viewing angle image being a virtual scene observable in a viewing angle range of the currently controlled object in the virtual scene; and accuracy of marker point location display is improved by marking the target scene area in the virtual scene.

Abstract: The invention relates to a method and system for selecting a least-loaded route based on a naive Bayes classifier, so that the performance of a method for selecting a least-loaded route is improved. A network snapshot records historical network status information, and a naive Bayes classifier is used to predict the potential future network blocking probability if a service connection is established along a candidate route between each node pair. A network snapshot corresponds to each service request that arrives, and records the number of busy capacity units on each link.

Abstract: The present disclosure designs a rotation matrix-based factor graph cooperative localization algorithm. Firstly, the reasons of sudden increase in an error in an operation process of a conventional factor graph cooperative localization algorithm are analyzed; secondly, a rotation matrix is designed, and the size of a rotation angle is determined; then, a rotation matrix-based cooperative localization algorithm factor graph model is constructed, and a specific algorithm flow is designed; and finally, filtering fusion estimation is performed on position status information of a slave boat.

Abstract: A pharmaceutical composition contains chlorogenic acid and coumaroyl quinic acid. The combined use of chlorogenic acid and coumaroyl quinic acid at a certain ratio can generate a synergistic enhancing effect to effectively inhibit the growth of human kidney cancer cell strain A479, rat kidney cell strain RuCa, and rat transplanted tumor RuCa, providing a novel choice for clinical treatment of kidney cancer and having good market application prospects.

Abstract: The invention relates to a method and system for selecting a least-loaded route based on a naive Bayes classifier, so that the performance of a method for selecting a least-loaded route is improved. A network snapshot records historical network status information, and a naive Bayes classifier is used to predict the potential future network blocking probability if a service connection is established along a candidate route between each node pair. A network snapshot corresponds to each service request that arrives, and records the number of busy capacity units on each link.

Abstract: The disclosure discloses a latitude-free initial alignment method under a swaying base based on gradient descent optimization. Firstly, swaying base latitude-free alignment is regarded as a Wahba attitude determination problem to inhibit device noise interference, and an objective function is established based on a gravitational acceleration vector under an earth system; then an exact solution of the objective function is obtained through a gradient descent optimization method, and inertial system conversion quaternion estimation is achieved under the latitude-free condition; and finally, an attitude quaternion is determined by only using information of an accelerometer and a gyroscope of a strapdown attitude heading reference system, and therefore latitude-free initial alignment under the swaying base is achieved.

Abstract: A data sending method, a data receiving method, a data transmit end, and a data receive end are provided. The data sending method includes: obtaining a transmission path used for data transmission, where the transmission path currently uses a first physical link group to transmit data; switching, based on a preconfigured link switching policy and transmission information of the transmission path, a physical link used by the transmission path from the first physical link group to a second physical link group; sending a first link switching notification message to a data receive end, where the first link switching notification message includes information indicating that the physical link used by the transmission path is switched from the first physical link group to the second physical link group; and continuing transmitting the data through a transmission path that uses the second physical link group.

Abstract: An anti-tumor composition for nasal administration has chlorogenic acid as an active ingredient, with the addition of pharmaceutically acceptable excipients or auxiliary ingredients. The chlorogenic acid preparation can improve the bioavailability of chlorogenic acid for nasal administration, penetrate the blood-brain barrier, have a significant inhibitory effect on brain tumors and nasopharyngeal carcinoma, and possess a clinical application value.

Abstract: The utility model provides a flexible screen protective film, which comprises a flexible application layer, a release film, a surface protective film and a positioning sticker. The upper end face of the flexible application layer is divided into a first gluing area and a second gluing area which forms the upper end face together with the first gluing area; the release film is glued to the lower end surface of the flexible application layer; the surface protective film is glued to the first gluing area on the upper end face of the flexible application layer; the positioning sticker is glued with the second gluing area of the upper end face of the flexible application layer, one end of the positioning sticker is connected with the surface protective film, and the other end protrudes from the outer edge of the flexible application layer as the free end.

Abstract: The present disclosure relates to methods and devices for discovering a Bluetooth device. One example method includes receiving, by a second Bluetooth device, a first broadcast frame from a first Bluetooth device, determining, by the second Bluetooth device, whether the first broadcast frame includes first indication information, and if the first broadcast frame includes the first indication information, sending, by the second Bluetooth device, at least one second broadcast frame within a preset time period after receiving the first broadcast frame The second broadcast frame includes second indication information, and the second indication information is used to instruct a Bluetooth device receiving the second broadcast frame to exchange information with the second Bluetooth device.

Abstract: A first device obtains an advertising parameter used by a second device to send an advertising data packet, where the advertising parameter includes an advertising window and an advertising interval. The first device determines, based on the advertising window and the advertising interval by using a preset scanning model, a target scan parameter used by the first device, where the target scan parameter is a scan parameter used by the first device when power consumption of the first device is a preset threshold and a scan-to-discover time period satisfies a preset condition. The target scan parameter includes a target scan window and a target scan interval. The first device performs scanning based on the target scan window and the target scan interval.