Zhejiang University

Hangzhou Hikvision Digital Technology Co., Ltd.

Advanced New Technologies Co., Ltd.

Future Wei Technologies, Inc.

Alibaba Group Holding Limited

Hangzhou Henuova Technology Co., Ltd.

Huawei Technologies Co., Limited

Jhm Biopharmaceutical (hangzhou) Co., Ltd.

Chao Wang

Qingfeng Sun

Shiliang Pu

Weiwei Cai

Chunde Jin

Hanwei Wang

Baokang Dang

Feng Lin

Kai-Ting Amy Wang

Jie Li

Peng Wang

Haichuan Wang

Hui Mao

Kui Ren

Ye Ren

Zhe Wang

Qi Qiang

Man Pok Ho

Wencong Zhang

Ming Xu

Xiaochen Quan

Qianyi Zhang

Fei Yang

Yingying Li

Yuewu Zhang

Jun Che

Jiamin Li

Jinsong Han

Xin Gao

Ye Xiong

Yanxing Bao

Weixing Yang

Jie Luo

Junliang Liu

Han Gao

Kui Zhang

Guofang Gong

Yakun Zhang

Weiqiang Wu

Qi Wu

Caicai Li

Wei Tang

Yicong Huang

Ming Gao

Zuting Cao

Tiantian Liu

Liwei Qiu

Boyan Zhao

Gang Du

Wenyao Xu

Zhongjie Ba

Yunfeng Gan

Yangqin Li

Lintao Wang

Tong Liu

Liwen Duan

Yipeng Chen

Junliang Li

Dengbo Fu

Baocai Sun

Jianan Li

Liming Guo

Yubao Shen

Guoqing Bao

The present invention provides a powder-assembled composite micro-nano fiber and a method for preparing the powder-assembled composite micro-nano fiber. The method includes the following steps: (1) preparing two-dimensional cellulose from a cellulose-raw-material; (2) dispersing the two-dimensional cellulose and a powder material in a solvent to form a mixed suspension; and (3) performing freeze drying on the mixed suspension to obtain the powder-assembled composite micro-nano fiber, wherein a temperature difference between two ends in a vertical direction of the mixed suspension is controlled to be 10-100° C. in a freezing process of the freeze drying. In the present invention, a new non-destructive processing path from primary particles to macro applications is constructed, and rich material platforms and infinite possibilities are provided for basic studies and technical applications. The technology will play a huge role in energy, medical material, environment, protection, catalysis, photoelectricity, food engineering, daily necessity and other vast fields.

Powder-assembled composite micro-nano fiber and preparation method thereof

The disclosure provides a multimodal speech recognition method and system, and a computer-readable storage medium. The method includes calculating a first logarithmic mel-frequency spectral coefficient and a second logarithmic mel-frequency spectral coefficient when a target millimeter-wave signal and a target audio signal both contain speech information corresponding to a target user; inputting the first and the second logarithmic mel-frequency spectral coefficient into a fusion network to determine a target fusion feature, where the fusion network includes at least a calibration module and a mapping module, the calibration module is configured to perform mutual feature calibration on the target audio/millimeter-wave signals, and the mapping module is configured to fuse a calibrated millimeter-wave feature and a calibrated audio feature; and inputting the target fusion feature into a semantic feature network to determine a speech recognition result corresponding to the target user. The disclosure can implement high-accuracy speech recognition.

Multimodal speech recognition method and system, and computer-readable storage medium

A device for detecting a slot wedge, an air gap and a broken rotor bar is provided, where a sequential circuit generates double concurrent pulses; the sequential circuit is connected to driving power modules; the driving power modules are connected to front-end interface circuits; the front-end interface circuits convert the double concurrent pulses into corresponding magnetic-field pulses; the magnetic-field pulses are transmitted to power supply terminals on adjacent phases of stator windings through impedance matching pins and coupled at a corresponding coil, air gap and squirrel cage rotor to generate single groups of cyclic rotating magnetic potentials; single rotating magnetic potentials are sequentially generated in adjacent slots on each of the phases of the stator windings; rotating electric potentials in magnetic circuits with two symmetrical phases are magnetically coupled to form distributed coupling magnetic field reflected full-cycle waves for reflecting a difference of a corresponding slot wedge.

Device and method for detecting slot wedge, air gap and broken rotor bar in magnetic circuit of electric machinery

The present invention provides a biomimetic composite material, a nacreous layer-mimetic material, a biomimetic nacre material and preparation methods thereof. The biomimetic composite material comprises multiple composite film formed from biomass fibers and an inorganic nanomaterial, wherein an organic polymer material is arranged between the multiple composite film layers or in the composite base body. The invention combines a high-mechanical-performance shellfish structure with a wood fiberboard to overcome the original defects of the fiberboard, improve the fiberboard performances and endow it with new special performances, so that the prepared material has dual functions of the fiberboard and the nanomaterial at the same time.

Biomimetic composite material and preparation method thereof

An artificial timber comprises the following components in parts by weight: 35-50 parts of cellulose, 20-35 parts of hemicellulose and 15-35 parts of lignin, wherein the artificial timber has a density of 0.01-0.05 g/cm. The preparing method comprises: (1) dissolving 15-35 parts by weight of lignin, 35-50 parts by weight of cellulose and 20-35 parts by weight of hemicellulose with an ionic liquid; (2) cleaning and replacing it with water to obtain a lignocellulose hydrogel; and (3) drying the lignocellulose hydrogel to obtain an artificial timber. The artificial timber prepared by the present invention is large in specific area, low in density, low in material energy consumption, moderate in condition and easy for operation. The artificial timber obtained by the present invention is regular in shape and is shaped like a sandy beige cylinder without obvious damage and deformation, which indicates that such artificial timber with high specific area has well molding capacity.

Artificial timber

The invention relates to a wood-based biomimetic artificial muscle and preparation method and application thereof. The biomimetic artificial muscle comprises a wood-based cellulose skeleton, and polyvinyl alcohol and at least one ionic polymer filled in the wood-based cellulose skeleton. The preparation method includes S1: slicing wood, and subjecting the obtained wood slices to ammonia treatment and delignification in sequence; S2: soaking in the solution of citric acid and/or citrate; S3: preparing water solution of an ionic polymer and DMSO water solution of polyvinyl alcohol separately, and mixing to obtain polymer solution; S4: subjecting the treated wood slices to vacuum treatment, filling the polymer solution into the container, releasing vacuum, and pressurizing to infiltrate the polymer into the wood slices until saturation; S5: freezing the wood slices in a refrigerator and thawing; and S6: repeating S5 for 5-10 times, washing the wood slices, and drying. The inventive biomimetic artificial muscle obtained by physical crosslinking not only has the same elasticity and electrostriction as the polymer, but also maintains the strength of the wood-based skeleton.

Wood-based biomimetic artificial muscle and preparation method and application thereof

A graphene material prepared using waste tires and a preparation method thereof. Waste tires are crushed to 30-200 meshes to obtain tire powders. The tire powders are mixed with KOH or an aqueous solution of KOH to obtain a homogeneous mixture. The mixture is dried at 50-90&#xb0; C. for 12-48 hours, heated and calcinated in a tube furnace under a protective gas for 1-48 hour to obtain a black lump. The black lump is washed with distilled water, dilute hydrochloric acid or dilute sulfuric acid for at least 3 times, and then washed with deionized water for at least 3 times to obtain a black powder. The black powder is dried to obtain the graphene material. The graphene material has a three-dimensional structure composed of oligolayer graphene intertwined and connected with each other, has a high crystallinity, is not easily agglomerated, and thus can maintain nano-effect of the graphene material.

Graphene material prepared from waste tire and preparation method thereof

A request for a webpage is received at a server associated with a website and from a terminal device, where the webpage includes an image, and where the server stores a first set of HyperText Markup Language (HTML) code that is associated with the webpage. The image is divided into a plurality of sub-images. A second set of HTML code associated with the webpage is determined, where the second set of HTML code includes code corresponding to each sub-image. The second set of HTML code is transmitted to the terminal device for sequential display of each sub-image on the terminal device.

Processing image data of a webpage

A method and apparatus for constructing a 3D scene model are provided. The method includes: acquiring a first point cloud corresponding to a current target scene (S); determining a first partial point cloud corresponding to a dynamic object from the first point cloud (S); constructing a foreground 3D model based on the first partial point cloud (S); and superimposing the foreground 3D model with a background 3D model to obtain a current 3D scene model (S). As can be seen, it is not necessary to fuse each pixel acquired by each depth camera. Instead, the dynamic object is determined in the point cloud acquired by the depth camera. Only the foreground 3D model corresponding to the dynamic object is superimposed with the background 3D model corresponding to the static objects obtained in advance. This reduces the amount of computation to build a 3D scene model.

Method and device for constructing 3D scene model

A drive system with both fixed-displacement hydraulic motors and variable-displacement hydraulic motors for a cutter head of a boring machine and a control method thereof are provided. The drive system includes a variable-displacement hydraulic motor group, a fixed-displacement hydraulic motor group and a variable-displacement hydraulic pump group. The variable-displacement hydraulic motor group, the fixed-displacement hydraulic motor group, and the variable-displacement hydraulic pump group are all connected to a main oil circuit of a cutter head system of the boring machine. The variable-displacement hydraulic pump group inputs flow to the main oil circuit; and, the variable-displacement hydraulic motor group and the fixed-displacement hydraulic motor group acquire flow from the main oil circuit. Displacements of the fixed-displacement hydraulic motor group and the variable-displacement hydraulic motor group are set in a way of specific displacement combination. The present invention decreases an engineering cost, and improves system reliability and efficiency.

Drive system with both fixed-displacement hydraulic motors and variable-displacement hydraulic motors for cutter head of boring machine and control method thereof

A computer implemented method manages execution of applications within a memory space of a multi-tenant virtual machine (MVM). The method includes instantiating a container for an application. The container has a thin client and a name space that is part of a memory space of the MVM. Threads of the application are moved from the MVM to the container. The threads are executed using the thin client in the name space of the container.

Virtual machine container for applications

An artificial timer and preparing method thereof. The artificial timber includes the following components in parts by weight: 35-50 parts of cellulose, 20-35 parts of hemicellulose and 15-35 parts of lignin, wherein the artificial timber has a density of 0.01-0.05 g/cm. The preparing method includes: (1) dissolving 15-35 parts by weight of lignin, 35-50 parts by weight of cellulose and 20-35 parts by weight of hemicellulose with an ionic liquid; (2) cleaning and replacing it with water to obtain a lignocellulose hydrogel; and (3) drying the lignocellulose hydrogel to obtain an artificial timber. The prepared artificial timber is large in specific area, low in density, low in material energy consumption, moderate in condition and easy for operation. The obtained artificial timber is regular in shape and shaped like a sandy beige cylinder without obvious damage and deformation, which indicates that such artificial timber with high specific area has well molding capacity.

Artificial timber and method for preparing artificial timber

A method that includes establishing a layered attribute description network according to description values of the filtering requirements; extracting description values that are in the attribute description network; establishing a mapping relationship between the filtering requirements and the attribute description network, generating a path dependency graph; performing traversal comparison between the description values included in the description information of the data object to be filtered and description values in the path dependency graph; if all description values of one description path are included in the description information of the data object to be filtered, recording the description path as a matching path of the data object to be filtered; and determining a filtering requirement that the data object to be filtered meets. The techniques combine public description values and public description sub-paths based on a path dependency graph, reduce determinations in the filtering process and reduce the time of computation.

Filtering data objects

The disclosure discloses a method, device and system for target tracking. Wherein, the method for target tracking includes that: Global Positioning System (GPS) information of a target object monitored by tracking equipment is acquired (S); Pan/Tilt/Zoom (PTZ) coordinate information corresponding to the GPS information of the target object is obtained according to a pre-stored conversion relationship between GPS information and PTZ coordinate information (S); and the tracking equipment is regulated to control the tracking equipment to monitor the target object according to the PTZ coordinate information of the target object (S). The problem of inaccuracy of a monitoring result of a method for monitoring a tracking target in the conventional art is solved.

Method, device and system for target tracking

Growing community of inventors

Hangzhou, China

Chao Wang