Abstract: The present disclosure discloses a method for execution of a computational graph in a neural network model and an apparatus thereof, including: creating task execution bodies on a native machine according to a physical computational graph compiled and generated by a deep learning framework, and designing a solution for allocating a plurality of idle memory blocks to each task execution body, so that the entire computational graph participates in deep learning training tasks of different batches of data in a pipelining and parallelizing manner.

Abstract: A method for realizing a dialing keypad of a touch screen, and smart watch.

Abstract: A method for realizing a dialing keypad of a touch screen, and smart watch.

Abstract: The present invention discloses a three-dimensional viewing angle selecting method, comprising: providing two virtual cameras for simulating a viewing angle; capturing visual feature information of a user, and providing a virtual cursor based on the visual feature information; selecting a positional coordinate based on the virtual cursor; receiving a confirmation signal input by the user; after receiving the confirmation signal, moving the two virtual cameras to two sides of the positional coordinate; and displaying a virtual scene captured by the two virtual cameras. The present invention also provides a three-dimensional viewing angle selecting apparatus. The three-dimensional viewing angle selecting method of the present invention can allow users to view from multiple selected angles, thereby enhancing the user experience.

Abstract: A printed circuit board (PCB) is provided. The PCB includes a first microwave board material, a second prepreg, and a third ordinary board material that are pressed together. The first microwave board material, the second prepreg, and the third ordinary board material are provided with an opening respectively. At least two openings have different sizes. In a region between boundaries of the at least two openings having different sizes, a borehole is provided to pass through the board material in the region. A back-drilled hole is selectively used. A radio-frequency device and a method for manufacturing a PCB are further provided. Thus, it is suitable for designing different power modules and other circuit modules on the same single board, and is compatible with the existing basic PCB manufacturing technologies, which further has a low cost, and can meet the requirements of large-power radio-frequency circuits with different frequencies.

Abstract: A process for preparing ?-sulpho-fatty acid ester salt surfactant comprises: (1) sulphonating a fatty acid ester with SO3 to produce a crude sulphonic acid, (2) bleaching the crude sulphonic acid from step (1) with hydrogen peroxide; (3) secondarily esterifying the product from step (2) with alcohol; (4) neutralizing the product from step (3) with an alkali solution; and (5) drying the product from step (4) to powder.

Abstract: A printed circuit board (PCB) is provided. The PCB includes a first microwave board material, a second prepreg, and a third ordinary board material that are pressed together. The first microwave board material, the second prepreg, and the third ordinary board material are provided with an opening respectively. At least two openings have different sizes. In a region between boundaries of the at least two openings having different sizes, a borehole is provided to pass through the board material in the region. A back-drilled hole is selectively used. A radio-frequency device and a method for manufacturing a PCB are further provided. Thus, it is suitable for designing different power modules and other circuit modules on the same single board, and is compatible with the existing basic PCB manufacturing technologies, which further has a low cost, and can meet the requirements of large-power radio-frequency circuits with different frequencies.

Abstract: A process for preparing an ?-sulpho-fatty acid ester salt surfactant comprises: (1) sulphating a fatty acid ester with SO3 to produce a crude sulphonic acid, (2) bleaching the crude sulphonic acid from step (1) with hydrogen peroxide; (3) secondaryary esterifying the product from step (2) with alcohol; (4) neutralising the product from step (3) with an alkali solution; and (5) drying the product from step (4) to powder.