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770 results about "Time efficiency" patented technology

Lithium ion battery silicon-carbon anode material and preparation method thereof

The invention relates to a lithium ion battery silicon-carbon anode material which comprises nanometer silicon, graphite polymer and organic matter pyrolysis carbon, wherein the graphite polymer is formed by granular graphite; the nanometer silicon is embedded and clamped among gaps of the granular graphite or attached on the surface of the granular graphite; nanometer silicon/graphite polymer is covered by the organic matter pyrolysis carbon. A preparation method of the lithium ion battery silicon-carbon anode material comprises the steps of: mixing the nanometer silicon, a dispersing agent, a bonding agent and the granular graphite in an organic solvent, and drying to obtain composite nanometer silicon/graphite polymer; adding the obtained composite nanometer silicon/ graphite polymer into the dispersion liquid of a carbon source precursor, mixing and drying; and carrying out heat treatment on material to obtain the lithium ion battery silicon-carbon anode material. The prepared silicon-carbon material has high specific capacity, high first time efficiency and excellent cycle performance, the capacity is larger than 450mAh/g, the first time efficiency is more than 85%, and the capacity retention ratio is more than 97% after circulation is carried out for 60 times.
Owner:BTR NEW MATERIAL GRP CO LTD

Method and system for automatically constructing knowledge maps for mass unstructured texts

The invention belongs to the technical field of computer software, and discloses a method and a system for automatically constructing knowledge maps for mass unstructured texts. The method comprises the steps of: abstracting a named entity recognition problem into a sequence labeling problem by giving a sentence and labeling each word in the sequence of sentences; designing effective features according to the training data, learning various classification models, and using trained classifiers to predict relationships; linking multiple existing knowledge to create a large-scale and unified knowledge network from the top; and capturing and integrating entity information from three online encyclopedias, open websites, related knowledge bases, or search engine logs. According to the method andthe system for automatically constructing knowledge maps for mass unstructured texts, the construction speed of the knowledge maps can be greatly improved, the time efficiency is improved, and the human resource cost is reduced by more than 30%. In addition, the method and the system have better domain portability, and the construction of the knowledge map can be quickly implemented by only optimizing the entities and relationship extraction algorithms in the invention.
Owner:GLOBAL TONE COMM TECH

Carbon aerogels for supercapacitors and method of manufacturing the same

A method for preparing carbon aerogels and carbon aerogels obtained therefrom are disclosed. The method for preparing carbon aerogels comprises: mixing organic starting materials including phloroglucinol and furfural with a solvent capable of dissolving the organic materials in a predetermined ratio to form a sol solution; adjusting pH of the sol solution adequately by using an acidic or basic catalyst, gelling the sol solution at room temperature under atmospheric pressure, and aging the resultant gels; substituting the solvent in thus obtained gels with liquid carbon dioxide, followed by drying in a supercritical state, to form organic aerogels; and pyrolyzing the organic aerogels in an electric furnace under inert atmosphere to obtain carbon aerogels. Particularly, the gels are formed at room temperature in a short period of time by adequately adjusting pH of the sol solution. Therefore, the method provides improved time efficiency and energy efficiency as compared to existing methods for preparing gels. Additionally, the method allows supercritical drying while avoiding a need for an additional solvent substitution, thereby simplifying the overall process. Further, the method enables preparation of carbon aerogels for supercapacitors having a high specific surface area and high capacitance even in the absence of additional activation step.
Owner:KOREA INST OF SCI & TECH

Method for constructing virtual case library of cancer pathological images and multi-scale cancer detection system based on convolutional neural network

The invention discloses establishment of a virtual case library of cancer pathological images and a multi-scale cancer detection system based on a convolutional neural network. The system is based ona method of a convolution neural network, a cancer mass region is detected on a pathological full-scan section, and the system includes four modules: 1) a pathological section image preprocessing module; 2) a virtual case database construction module; 3) a high-scale cancer mass detection module; and 4) a small-scale cancer mass classification module. The multi-scale cancer detection system provided by the invention can make full use of the multi-scale information of a pathological image, on different scales, according to the characteristics of the image, different strategies are designed to detect a suspected cancer area, and at the same time, under the condition of insufficient training data, the virtual case library method established by the invention can provide more training data setsfor an existing data-driven deep learning method. The multi-scale cancer detection system based on a convolutional neural network has the characteristics of multi-scale detection, driving of a relatively small amount of data and the like, and has the characteristic of reducing computing resources required for one-time recognition and improving time efficiency of an algorithm on the basis of ensuring the overall recall rate and accuracy.
Owner:杭州同绘科技有限公司

Silicon and carbon negative electrode material for lithium ion battery and preparation method thereof

The invention discloses a silicon and carbon composite negative electrode material for a lithium ion battery. The material is a three-dimensional composite material of a core-shell structure, and sequentially comprises nanometer silicon/ graphite, a conductive network layer and an organic cracking carbon layer from inside to outside, wherein the nanometer silicon/ graphite uses the graphite as aninner core volume expansion buffer base body; the nanometer silicon particles are embedded in graphite particle gaps or are attached onto the surface of the graphite particles; the conductive networklayer is formed by nanometer conductive agents which penetrate and insert into silicon particle gaps, silicon particle and graphite particle gaps and graphite particle gaps and/or coat the surface ofthe nanometer silicon particles; the organic cracking carbon layer uniformly coat the surface of the silicon nanometer silicon/graphite. The invention also discloses a preparation method of the silicon and carbon negative electrode material. The dispersing agents are used for directly compounding the nanometer silicon slurry, the nanometer conducting agents and organic carbon source; the production process is simple; the operation is easy; the method is suitable for mass production. The material has excellent first time efficiency, circulation performance, rate capability and relatively low volume expansion effects.
Owner:CHENGDU GUIBAO SCI & TECH

Robot charging method and device

The embodiment of the invention provides a robot charging method and a robot charging device. The method comprises the steps of detecting a path pilot signal emitted by a charging pile and a real-time distance between a robot and the charging pile, if the electric quantity of the charging pile is lower than a preset threshold; and determining a moving direction according to the path pilot signal, and determining a moving speed according to the real-time distance, and controlling the robot to move to the charging pile at the moving speed along the moving direction. The moving speed of the robot is controlled during a process that the robot moves to the charging pile according to the distance between the robot and the charging pile, so that the defect that collision or low time efficiency may be caused by too fast or too slow moving speed can be overcome. Then a charging request including the electric quantity is sent to the charging pile in response to a butt-joint indication signal, so that the situation that the robot triggers a charging requirement is determined if the charging pile receives the charging request within preset time, the charging pile is triggered to charge the robot, and the security problem caused by the condition that the charging pile is mistakenly triggered for charging is solved.
Owner:SHANGHAI MROBOT TECH CO LTD

Negative pole piece for lithium battery, preparation method of negative pole piece and lithium battery with negative pole piece

The invention belongs to the technical field of lithium batteries, and in particular relates to a negative pole piece for a lithium battery. The negative pole piece comprises a current collector and a graphitic layer arranged on the current collector, and further comprises a protecting layer and a metal lithium layer, wherein the protecting layer is arranged on the graphitic layer; and the metal lithium layer is arranged on the protecting layer. Compared with the prior art, the negative pole piece is provided with the protecting layer on the surface of the graphitic layer, and the metal lithium layer on the surface of the protecting layer, when the negative pole piece is assembled into the lithium battery, metal lithium powder diffuses in the negative pole piece in an electrochemical manner, so that the first time efficiency of a negative pole is improved, and moreover, the energy density of the lithium battery is increased, and the capacity of the lithium battery is enhanced; and at the same time, the protecting layer is equivalent to a buffer layer which can effectively prevent the graphitic layer from internally peeling off, so that the stability of an SEI (Solid Electrolyte Interphase) membrane on the surface of the negative pole piece is improved, and the circulation performance of the battery is improved. In addition, the invention also discloses a preparation method of the negative pole piece and a lithium battery with the negative pole piece.
Owner:DONGGUAN AMPEREX TECH

Adaptive noise intensity video denoising method and system thereof

The invention discloses an adaptive noise intensity video denoising method which is based on motion detection and is embedded in an encoder. The method comprises the following steps: (1) taking a sum of regularization frame differences in a neighborhood as an observed value, dividing input pixels into a static pixel and a dynamic pixel and using filters in different supporting domains for the two kinds of the pixels, wherein a filtering coefficient is adaptively determined according to noise intensity and an image local characteristic; (2) taking a single DCT coefficient or the sum of the several DCT coefficients as the characteristic, using AdaBoost as a tool to construct a cascade-form classifier and using the classifier to select a static block; (3) establishing a function model of connection between DCT coefficient distribution parameters of the video noise intensity and the static block and using the model to estimate the noise signal standard difference. By using noise intensity estimation embedded in the video encoder and a noise reduction technology provided in the invention, few computation costs can be used to acquire the parameters and the information needed by noise filtering. A time efficiency is good. Because a reliable clue is used to determine whether the pixels accord with a static hypothesis, the filter of the invention can effectively filter the noise and simultaneously maintain marginal sharpness of the static image. And motion blur caused by filtering in a motion area can be avoided.
Owner:ZHEJIANG GONGSHANG UNIVERSITY

Short-time early warning system for severe convection weather

The invention discloses a short-time early warning system for severe convection weather, and the system comprises a business management module which achieves duty shifting registration, system log, forecast grading, and business flow; a data preprocessing module which achieves real-time data collection, data quality control, data preprocessing, and severe convection weather diagnosis; a short-time temporary forecast early warning module which achieves a weather background and case library, severe convection monitoring analysis, severe convection potentiality forecast, severe convection short-time temporary forecast, and the manufacturing of forecast early warning products; and a product distribution module which achieves product packaging, early warning information inter-cut, short-message/audio-signal services, and fax/E-mail. The system constructs base information, and carries out the statistics of severe convection generation factors of the Tibet region in recent years. The system achieves the research of the large-scale conditions of severe convection weather in the Tibet region, and divides different circulation patterns for different regions. The system employs a method of composite analysis to synthesize the characteristics of an environment field, builds an early-warning model, and has higher forecast accuracy and long forecast time efficiency for the severe convection weather in the Tibet region.
Owner:CHENGDU UNIV OF INFORMATION TECH +2

High conductivity, high intensity and heat resisting aluminum alloy conducting wire and method for producing the same and conducting wire

The invention discloses a high-conductivity high-strength heat resistance aluminum alloy conducting wire, a method for producing the same and a conducting wire produced from the same. The technical problem solved by the invention means that the high-conductivity high-strength heat resistance aluminum alloy conducting wire has the characteristics of high conductivity, high strength and heat resistance while meeting cable requirements. The aluminum alloy wire comprises the following components in weight percentage: 0.10 to 0.40 percent of Zr, 0.10 to 0.80 percent of Fe, 0.04 to 0.30 percent of Si, 0.50 to 0.80 percent of Mg, 0.10 to 0.30 percent of RE, less than 0.01 percent of Cu, and the balance being Al. The production method comprises the following steps: the Zr, the Fe, the Si, the Mg, the Re and the Al are placed in a furnace and subjected to stirring, standing, continuous cast and tandem rolling, drawing and time efficiency heat treatment. The conducting wire is prepared from the high-conductivity high-strength heat resistance aluminum alloy conducting wire. Compared with prior art, the electric conductivity of the conducting wire is more than 58.0 percent IACS, the tensile strength is more than 265MPa, and the heat resistance is more than 150 DEG C, thereby effectively increasing the power transmission capability of the conducting wire and enlarging the laying span of the conducting wire.
Owner:广东吉青电缆实业有限公司

Medical information sharing management platform and management method based on intelligent Internet-of-things interconnection

Provided is a medical information sharing management platform based on intelligent Internet-of-things interconnection. The medical information sharing management platform comprises a hospital chief-background, management sub-backgrounds, a management intelligent terminal and a user intelligent terminal, the hospital chief-background, the management sub-backgrounds, the management intelligent terminal and the user intelligent terminal interconnect with each other through a communication network; each management sub-background comprises a nurse station management end and a matched department management end, and the information of the nurse station management end is interconnected with that of the department management end; the management intelligent terminal comprises a nurse intelligent terminal or a doctor intelligent terminal, the information of the nurse intelligent terminal is interconnected with the information of the nurse station management end, and the information of the doctorintelligent terminal is interconnected with the information of the department management end; the user intelligent terminal comprises a patient intelligent terminal, the information of the patient intelligent terminal is interconnected with the information of the nurse station management end or the department management end. The medical information sharing management platform can solve the problemof the integration of doctor-patient management, communication and mutual assistance of departments, improve the time efficiency of a patient calling a medical person and communicating with the medical person, and improve the efficient management of the medical person to the patient and the work efficiency.
Owner:深圳市云护宝计算机技术有限公司
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