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253results about How to "Improve reference" patented technology

Switched-capacitor circuit with scaled reference voltage

A pipelined analog-to-digital converter (ADC) (30) with improved precision is disclosed. The pipelined ADC (30) includes a sequence of stages (20), each of which includes a sample-and-hold circuit (22), an analog-to-digital converter (23), and the functions of a digital-to-analog converter (DAC) (25), an adder (24), and a gain stage (27) at which a residue signal (RES) is generated for application to the next stage (20) in the sequence. A multiplying DAC (28) performs the functions of the DAC (25), adder (24), and gain stage (27) in the stage (20), and is based on an operational amplifier (29). Sample capacitors (C10, C20) and reference capacitors (C122, C222) receive the analog input from the sample-and-hold circuit (22) in a sample phase; parallel capacitors (C121, C221) are provided to maintain constant circuit gain. Extended reference voltages (VREFPX, VREFNX) at levels that exceed the output range (V0+, V0−) of the operational amplifier (29) are applied to the reference capacitors, in response to the digital output of the analog-to-digital converter (23) in its stage (20). The reference capacitors (C12, C22) are scaled according to the extent to which the extended reference voltages (VREFPX, VREFNX) exceed the op amp output levels (V0+, V0−). The effects of noise on the reference voltages (VREFPX, VREFNX) on the residue signal (RES) are thus greatly reduced.
Owner:TEXAS INSTR INC

Food sensory quality evaluation method and system thereof

InactiveCN102222164AImprove objectivity and precisionHigh versatility and referenceComponent separationColor/spectral properties measurementsSensory analysisChemometrics
The invention provides a food sensory quality evaluation method and a system thereof. The method comprises the following steps: analyzing the special sensory characteristics of a food object to be researched to obtain a food sensory quality semantic description space; utilizing a modern instrument analyzing technical means combined with chemometrics to carry out storage and processing with digital information to the food object to be researched so as to obtain a food physicochemical parameter space; utilizing an intelligent sensory analysis technology to obtain an intelligent sensor image and a map space of the food object to be researched; utilizing an information fusion technology to carry out information fusion to the food sensory quality semantic description space, the food physicochemical parameter space, the intelligent sensor image and the map space; and utilizing a data mining technology to obtain the relationship between a sensory evaluation index, a physicochemical testing index and an intelligent sensory analysis index from basic data of the food object to be researched so as to evaluate the sensory quality of the food object to be researched. The invention can improve the objectivity and the accuracy of the food sensory quality evaluation.
Owner:CHINA NAT INST OF STANDARDIZATION

CT (Computed Tomography) value correcting method for cone-beam CT

The invention discloses a CT (Computed Tomography) value correcting method for cone-beam CT. The CT value correcting method comprises the following steps: scanning air, a water phantom and a bone tissue body phantom under different scanning conditions to respectively obtain projection data; reestablishing an image; removing noise and artifacts by adopting a polynomial fitting method based on a template image; selecting a plurality of interested regions and calculating a mean value of an attenuation coefficient and a standard deviation of the attenuation coefficient; obtaining the value range of the attenuation coefficient and taking the attenuation coefficient of maximum occurrence probability; fitting the attenuation coefficients of the air, the water phantom and the bone tissue body phantom under the different scanning conditions with corresponding ideal CT values to obtain respective fitting curves; performing CT scanning and image reestablishment on a scanned material; obtaining a CT value image according to a material attenuation coefficient image and a fitting curve and finishing the CT value correction. According to the CT value correcting method disclosed by the invention, image noise and artifact can be effectively reduced, the reestablished image of single material reaches the uniformity to the great degree, the precision of the attenuation coefficient of the material becomes higher and further high accuracy for the fitting of the curve of the CT value and the material attenuation coefficient is realized.
Owner:NORTHEASTERN UNIV

Intelligent GPS (global position system) route planning system and method based on cloud service

The invention provides an intelligent GPS (global position system) route planning system and method based on cloud service. The system comprises a cloud system and multiple car-mounted terminals, wherein the car-mounted terminals are used for acquiring real-time operation parameters of a car by an OBD (on board diagnostics) and acquiring real-time position information of the car by a GPS, and sending the parameters and the information to the cloud system; the car-mounted terminals also send navigation instructions inputted by a user to the cloud system; the cloud system is used for receiving and integrating the required real-time operation parameters of the car, the real-time position information of the car and regional map information, extracting integrated data according to the navigation instructions inputted by the user and sent by the car-mounted terminals so as to establish a virtual model of traffic road conditions, and calculating a driving route and issuing the driving route to a corresponding car-mounted terminal. According to the system and the method provided by the invention, by combining the existing GPS technology and the existing OBD technology, the acquired real-time operation parameters and real-time position information of the car are collected to a cloud computing platform, and an intelligent dynamic car driving route is planned through cloud computing; the reference is higher than that of the existing static route planning.
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL

Method, device and server for searching articles of finance and economics

The invention provides a method, a device and a server for searching articles of finance and economics. The method comprises the steps of according to a key word sent from a browser client, acquiring articles of finance and economics matched with the key word out of a pre-established library of finance and economics; according to the article information of finance and economics, generating index abstracts corresponding to the article information of finance and economics and distributing type tags for the article information of finance and economics; according to the type tags corresponding to the article information of finance and economics, sorting and ordering the index abstracts corresponding to the article information of finance and economics to obtain a search result corresponding to the key word. According to the technical scheme of the invention, type tags are distributed for the article information of finance and economics, and then the index abstracts of the article information are sorted and ordered according to the type tags. In this way, the obtained research result is clear in type, so that the browser client can display the search result in the sorted manner. Users can browse articles according to the types of the article information of finance and economics. Therefore, the searching reference for articles of finance and economics is improved.
Owner:GUANGZHOU SHENMA MOBILE INFORMATION TECH

Clinical decision support system and method

The invention provides a clinical decision support system and method. The system comprises a data analysis management platform, a structured evidence-based knowledge base and an intelligent inference machine, wherein the data analysis management platform stores and processes patient data, detects the data according to biomarkers, and generates omics variation data of the patient; the structured evidence-based knowledge base stores clinical phenotype data, biomarker detection data, the omics variation data, drug diagnosis and treatment research information and evidence-based clinical annotations, and establishes a rule of correlation among the data; and the intelligent inference machine, according to the clinical phenotype data and the omics variation data of the patient, calls the structured evidence-based knowledge base to generate clinical decision reference information. Based on the structured evidence-based knowledge base, omics variation is introduced, so that clinical decision is supported in gene level, and DNA, RNA, protein, metabolome and epigenome level variation is covered; and by performing analysis and evidence-based annotation on the omics variation data, the reference information is provided for the clinical decision, so that the accuracy and reference of clinical decision support are improved.
Owner:为朔医学数据科技(北京)有限公司

Attentiveness training and evaluation device based on force tactile-sensation feedback and electroencephalic signal analysis

The invention discloses an attentiveness training and evaluation device based on force tactile-sensation feedback and electroencephalic signal analysis. The device includes a force tactile-sensation training unit, an electroencephalic recording unit and a control unit. The force tactile-sensation training unit is used to send finger touch force data of a trainee to the control unit. The electroencephalic recording unit is used to send electroencephalic signals of the trainee in a training process to the control unit. The control unit includes a training module, an evaluation module and a control module. The training module is used to store training modes. The evaluation module evaluates data fed back by the force tactile-sensation training unit and the electroencephalic recording unit. Thecontrol module adaptively adjusts training difficulty according to an evaluation result. A physiological index and a behavioral index which characterize an attentiveness level are obtained at the same time, the attentiveness level of the subject can be improved in a short term, an anastomosis degree between the obtained physiological index and behavioral index is very high, and the attentivenesslevel of the trainee can be reliably analyzed and evaluated.
Owner:BEIHANG UNIV

Thermodynamic diagram change identification-based urban area traffic resource regulation and control method and system

The embodiments of the invention disclose a thermodynamic diagram change identification-based urban area traffic resource regulation and control method. The method includes the following steps that: big data analysis is carried out on traffic parameter data uploaded by detection devices arranged at urban road monitoring points, so that the traffic thermodynamic diagrams of corresponding traffic parameters are generated, and a traffic thermodynamic diagram sequence containing the traffic thermodynamic diagrams is generated; image recognition is performed on the traffic thermodynamic diagrams through a neural network model; current traffic thermodynamic diagram recognition results are compared with the recognition results of the previous traffic thermodynamic diagrams in the traffic thermodynamic diagram sequence, so that traffic state change information is obtained; and traffic resources are scheduled according to the traffic state change information. With the method adopted, the rationality and reference of a finally generated resource allocation scheme are improved, so that the finally generated traffic resource scheduling scheme is more reasonable and evidence-based, and the problems of traffic jam and low traffic resource utilization rate are better solved.
Owner:重庆特斯联智慧科技股份有限公司
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