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1513results about How to "Reduce dependency" patented technology

Method for preparing tobacco sheet and application thereof

The invention discloses a method for preparing tobacco sheets and an application of the method. In the method, enzymolysis is implemented when the tobacco stalk and the tobacco powder are soaked, solid-liquid separation is implemented after extraction, the solids are made into fiber sheet substrates, liquid is made into concentrated solution by alcohol precipitation and concentration, the concentrated solution is made into coating liquid by maillard reaction and coated on the fiber sheet substrates, and the fiber sheet substrates are dried and cut into tobacco sheets. In the invention, the macromolecular compounds that influence the quality of the tobacco sheets are sufficiently degraded by enzymolysis, the content of the impure taste in the tobacco sheets is decreased, the internal quality of the tobacco sheets is improved, and better aroma is obtained by the technical solution that produces prospective aroma by the maillard reaction to provide a rich aroma for the tobacco sheets so as to obtain tobacco sheet products fitting different types of cigarette products and having better internal quality. The tobacco sheets prepared by the method have excellent compatibility and harmonywith the conventional raw materials of the cigarettes, and have the advantages of good cigarette taste, various and rich aromas and less impure taste.
Owner:CHINA TOBACCO GUANGDONG IND

Method for protecting privacy data of users in cloud environment

The invention discloses a method for protecting the privacy data of users in a cloud environment. The method comprises the following steps that: a cloud platform receives a user request, and judges whether the user request is a data uploading request or a data reading request; if the user request is a data reading request, the cloud platform searches corresponding data according to an identifier of to-be-read data in the data reading request, and judges whether the data is a ciphertext; if the data is a ciphertext, the cloud platform searches whether the user is authorized in a re-encryption key server; if the user is authorized, the cloud platform re-encrypts the data into a ciphertext (can be decrypted by the user) by using a proxy re-encryption service and a re-encryption key corresponding to the user, and issues the ciphertext to the user; the user decrypts the ciphertext by using a decryption key of the user and a decryption interface of a safety plugin so as to obtain plaintext data; and the user calls a corresponding application program interface to carry out modification on uploaded data by using a client plug-in. According to the invention, the application demands of user data on the cloud platform are not affected while the privacy data of the users is protected,.
Owner:HUAZHONG UNIV OF SCI & TECH

Robust adaptive underactuated surface ship path tracking control method based on fuzzy unknown observer

The invention discloses a robust adaptive underactuated surface ship path tracking control method based on a fuzzy unknown observer. The robust adaptive underactuated surface ship path tracking control method based on the fuzzy unknown observer comprises the following steps that an unmanned ship kinematics and dynamics model is established; a path tracking error dynamic state is built; a line-of-sight guidance law with variable speed is proposed; a fuzzy logic system is established; and a controller based on the fuzzy unknown observer is designed. In a guidance subsystem, the line-of-sight guidance law with the variable speed is proposed, the control flexibility and robustness of a guidance system are improved, and the position error is enabled to be asymptotically stabilized to zero; andin a control subsystem, the fuzzy unknown disturbance observer is designed to estimate the unknown disturbance quickly and accurately, and effective compensation is carried out on the designed speed and a heading controller, so that the tracking error between a guidance signal and actual quantity is asymptotically stabilized back to zero. The involved algorithm framework can enable a whole closed-loop system to be globally asymptotically stabilized, and the control flexibility and tracking accuracy of a path tracking control system are greatly improved.
Owner:DALIAN MARITIME UNIVERSITY

Virtual reality rehabilitation training system and method

The invention discloses a virtual reality rehabilitation training system and method. The system comprises a motion capture device, a mobile device and a processor. The processor is installed in the mobile device to form an integrated bedside device, and the processor is connected with the motion capture device. The motion capture device is used for acquiring patient's limb motion data in real time. The processor comprises a data receiving module, a processing module and a displaying module. The data receiving module is used for receiving the limb motion data. The processing module is used for emitting a driving signal, and assessing training on a patient according to the limb motion data to obtain an assessment result. The display module is used for displaying changes of three-dimensional human model's actions in real time according to the driving signal, and the assessment result. The mobile device comprises a device main body and a mobile mechanism connected at the lower end of the device main body, the device main body is provided with a height adjusting mechanism used for adjusting the height of the device main body. The virtual reality rehabilitation training system is low in cost, small in land occupation and convenient to move, so the system can be disposed beside a patient's bed.
Owner:CHINA REHABILITATION RES CENT

Method and system for authority management based on blockchain

ActiveCN108229962ALow costThere will be no problem of out-of-control permissionsFinanceUser identity/authority verificationBlockchainRights management
The present invention relates to the technical field of networks, and discloses a method and a system for authority management based on a blockchain. The method comprises the steps that: each user generates respective mutually independent user secret keys by himself; the internal portion of an authorization server forms different role secret keys according to the high-low authorities correspondingto roles which the external users plays; an initiator user logs in the authorization server and uses his own user private keys and the role private keys corresponding to the user to create authorization transaction with another user; or, the initiator user uses his own role private keys to perform transaction and unlock the confirmed authorization transaction so as to create transaction with himself and form ex-right transaction with another user; the authorization server needs to verify digital signature information of the user who creates the transaction; and the forms of the user creatingthe transaction are recorded in a blockchain. The problems are solved that system centralization causes that performances and safety highly depend on a central processing unit, the authority information is not enough to be disclosed and transparent and both rights cannot be ensured at the same time in a traditional management and control system.
Owner:ZHONGAN INFORMATION TECH SERVICES CO LTD +1

Automatic division method for pulmonary parenchyma of CT image

The invention provides an automatic division method for pulmonary parenchyma of a CT image. According to the automatic division method, the CT is divided through carrying out a random migration algorithm for two times to obtain the accurate pulmonary parenchyma; in the first time, the random migration algorithm is used for dividing to obtain a similar pulmonary parenchyma mask; and in the second time, the random migration algorithm is used for repairing defects of the periphery of a lung and dividing to obtain an accurate pulmonary parenchyma result. Seed points, which are set by adopting the random migration algorithm to divide, are rapidly and automatically obtained through methods including an Otsu threshold value, mathematical morphology and the like; and manual calibration is not needed so that the working amount and operation time of doctors are greatly reduced. According to the automatic division method provided by the invention, a process of 'selecting the seed points for two times and dividing for two times' is provided and is an automatic dividing process from a coarse size to a fine size; and finally, the dependence on the selection of the initial seed points by a dividing result is reduced, so that the accuracy, integrity, instantaneity and robustness of the dividing result are ensured. The automatic division method provided by the invention is funded by Natural Science Foundation of China (NO: 61375075).
Owner:HEBEI UNIVERSITY

A lane departure warning method

The invention discloses a lane departure warning method, comprising the following steps: (1) information perception: providing the state information and the environment information of the current vehicle motion by a vehicular sensor; (2) track prediction: according to a driving behavior model of a human driver, predicting the possible traveling track range of a vehicle within a certain period of time in the future by combining with vehicle kinematics and a kinetic model; (3) lane departure warning decision: according to the possible traveling track of the vehicle and a left and right road boundary point range detected on a front road marker line, analyzing the vehicle motion safety by taking the relative relationship between calculation time from the possible traveling track of the vehicle to the detection point range on the lane marker line and a preset threshold time Tthre as an index of lane departure warning; and (4) man-machine interface: if the system judges that the vehicle is in the danger of departing from a lane, reminding the driver in sound or in other manners of taking proper actions. The lane departure warning method has the advantages of simple principle, high detection precision, simple integral structure after implementation, low cost, and the like, is simple to operate and can work stably and reliably.
Owner:NAT UNIV OF DEFENSE TECH

Multi-mobile robot control system based on following pilot formation

The invention discloses a multi-mobile robot control system based on following a pilot formation, which comprises an experimental environment image acquisition module, an upper computer positioning module, a car-like mobile robot group, a communication module and a control algorithm module, wherein the experimental environment image acquisition module is used for acquiring video images of a plurality of mobile robot formation experimental environments; the upper computer positioning module calculates absolute position information of each robot in real time by using an image processing algorithm through a coordinate system calibrated via a camera; the car-like mobile robot group is composed of a plurality of single mobile trolleys, and an autonomous decision is made to complete the formation task; the communication module performs data interaction and information sharing through a wireless communication manner; the control algorithm module coordinates and controls the whole system to complete the formation task based on the pilot-followed formation algorithm. The multi-mobile robot control system based on following a pilot formation in the invention is a multi-robot formation systemwhich is based on visual positioning and suitable for the indoor and has the characteristics of strong reliability and strong real-time performance.
Owner:NANJING UNIV OF SCI & TECH

System and method for grid fault identification based on random point distribution PMU

The invention discloses a system and method for grid fault identification based on a random point distribution PMU and belongs to the technical field of power system fault identification. The system comprises a fault relative domain identification module, a fault locating module, a fault component identification module and a domain backup protection module. A grid structure changing characteristic is evolved to a branch current difference by the fault relative domain identification module, so that fault relative domain identification is achieved; overall traversal is conducted on a relative domain by the fault locating module, so that accurate location of a fault point is achieved based on a node voltage matching condition; based on virtual current differential, protecting criteria are constructed through an opposite terminal calculated current and a home terminal actually detected current by the fault component identification module, so that fault component identification is achieved; according to domain backup protection operation logic, the near backup tripping function and the far backup tripping function are achieved by the domain backup protection module. Complete domain backup protection under the environment of random PMU point distribution is achieved and the dependence degree on synchronous data of protection is reduced to a great extent.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Index-system-model-based agile business intelligence data construction method

The invention belongs to the field of business intelligence, and particularly relates to industry data-oriented index setting definition, management, storage and application of providing data analysis and support. The invention discloses an index-system-model-based agile business intelligence data construction method. An index calculation model and data storage function construction method for different industries and service fields is realized by using index data capable of distinguishing data characteristics as a center through dynamic extraction of the index data, index system configuration and attribute definition. The method comprises the following steps of: performing index system extraction by using a minimum granularity information unit as an index extraction principle, and then performing index attribute definition and setting. By the index-system-model-based agile business intelligence data construction method, the application of a business intelligence platform can be prevented from being constrained by specific industry and service, a basic data model for data analysis and application is quickly and effectively constructed, the construction problem of an on-line analytical processing (OLAP) model is solved, and a foundation is laid for efficiently constructing various data analysis and application models with high quality.
Owner:上海实时数据软件有限公司
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