669results about How to "Comprehensive evaluation" patented technology

The invention discloses a big data-based STEM education assessment system and method. The system mainly comprises an information collection and storage module, a teaching scheme generation module, a course implementation module, a student ability and accomplishment analysis module and an ability and accomplishment visualization module; the information collection and storage module mainly records basic information and behavior logs of a teacher and students; the teaching scheme generation module assists the teacher to develop teaching design; teaching activities are implemented in the course implementation module, and teacher and student behavior data is stored; the student ability and accomplishment analysis module analyzes core accomplishment, subject knowledge and key abilities of the students; and student assessment results are displayed in multiple ways of a radar map, a knowledge map and the like in the ability and accomplishment visualization module, and the student assessment results are stored in the information collection and storage module. The assessment system and method is applied to the STEM education assessment; the teacher and the students are assisted to accuratelyknow student ability and accomplishment development according to the assessment results; the teacher is assisted to accurately teach; and the student learning effect is improved.

The invention discloses a method for controlling the quality of ginkgo leaves and an extract thereof. After the screening of a great quantity of experiments, the method adopts ultra-high performance liquid chromatography for detection; and the method can be used for detecting three types of components including flavone, terpene lactones and phenolic acid, twenty-four active compounds in total, in the ginkgo leaves and the extract of the ginkgo leaves. The results of the experiments prove that the method is high in detection sensitivity and good in stability, and can be used for objectively, comprehensively and accurately evaluating the quality of ginkgo leaf medicines, the extract of the ginkgo leaves and ginkgo leaf preparations, thus having important significance on controlling the quality and guaranteeing the clinical treatment effect.

The invention relates to a power grid vulnerability evaluation method based on a membership function fuzzy comprehensive evaluation method. The power grid vulnerability evaluation method comprises the steps that 1) static safety analysis, dynamic safety analysis, power grid topology structure safety analysis and reliability analysis indexes of a power grid are defined; and 2) vulnerability fuzzy comprehensive evaluation is carried out based on membership functions. According to the invention, for a continuous and reliable power supply target of a load, the vulnerability level of the power grid is comprehensively measured from the aspects of voltage, current, structure, reliability and the like of the power grid; the vulnerability score is more comprehensive and more for reference; and the vulnerability state evaluation level of the power grid is improved.

Methods and systems for evaluating and/or monitoring chromatography column performance are provided. Embodiments apply multivariate analysis (MVA) methods to process data as well as transition analysis data to provide a comprehensive evaluation of chromatography column performance. In embodiments, transition analysis data generated over extended periods of time can be analyzed together with process data to evaluate column performance. Further, embodiments enable a compact and robust tool for combining and presenting performance evaluation results, which allows for time-efficient performance examination. According to embodiments, MVA methods applied on transition analysis and process data provide (1) near real-time ability to comprehensively monitor column packing quality; (2) sensitive detection of column integrity breaches; (3) sensitive detection of subtle changes in column packing; (4) sensitive detection of different types of changes in column packing; (5) sensitive detection of fronting/tailing; and (6) sensitive detection of changes in process performance.

The method comprises: a) drawing a operating condition graph, and dividing the operating condition graph into four areas which are an area of test parameter under investigation, an area of normal working, an area of low mechanical efficiency, and an area of motor low load and load efficiency; b) determining the location of individual well in the graph: testing the motor running parameter, pumping unit well suspension parameter, and using diagram of work fluidounce metering to fast measure the fluidounce yield; calculating the motor input and output power, motor load rate, pumping unit polished rod power and pumping unit system ground efficiency; filling the obtained motor load rate, pumping unit system ground efficiency data into the ground electromechanical system operating condition graph.

The present invention provides a method for evaluating lossy compression quality of image. The method comprises the following steps: selecting related image as testing image as testing image according to a set image selecting principle; executing data compression to the tested image with an image compression method to be evaluated thereby obtaining compression image; decoding for obtaining reconstructed image; analyzing the tested image and reconstructed image through a plurality of image evaluation aspects thereby evaluating the adopted image compression method; wherein, the plurality of image evaluation aspects can execute full evaluation to the compressed image quality, and simultaneously the plurality of image evaluation aspects have no relativity. The method can execute full evaluation to the quality of compressed image, is suitable for the original image with different landform categories and texture abundance degrees, and can provide a reference for the improved design of spaceborne compression algorithm developed by our country.

The invention provides an electronic intelligent auxiliary writing training and analysis evaluation system, and belongs to the field of electronic auxiliary writing training. Aiming to solve the key problem of good character writing in the writing training, the technical feedback about the writing quality is given in time by using an intelligent electronic or computer auxiliary means to answer thequestions of 'how about the writing'or what's the difference', so that the psychological doubts are resolved and the lack of skills is pointed out. The character image or the information is acquiredby the aid of a sensing device. The device is characterized in that quantitative or visual comparison is conducted on the writing words acquired by the sensing device and the corresponding standard copybook words called out from the system, the consistency quantitative evaluation and/or visual comparison image can be given as the feedback to guide the writing training, so that the writing skills and levels can be improved. The interactive and gain cycling of the writing training process can be realized, the effect is remarkable, the cost is low, the on-purpose, guiding, and assisting properties are achieved. The system makes the user feel it like a good teacher and student, and the writing level is stably improved by means of the aiding.

The invention provides a bank card risk monitoring method and a bank card risk monitoring system based on Web. The method comprises that: transaction data of a bank card is collected in real-time; property data of the bank card is periodically collected; a bank card risk monitoring model is established; the transaction data of the bank card and the related property data of the bank card are monitored according to the bank card risk monitoring model, bank card risk monitoring result data is generated; a Web bank card risk monitoring service request is received; according to the Web bank card risk monitoring service request, the corresponding bank card risk monitoring result data is displayed in the form of Web to control the risk of the bank card service and improve the benefit level by evaluating and monitoring the bank card risk data.

A test system of oxygen transducer used on automobile comprises fuel output unit for mixing fuel with air to generate mixture, combustion unit including ignition element and combustion chamber with air exhaust pipe, oxygen transducer set on air exhaust pipe with its head being inserted into said pipe to sense residual oxygen concentration in tail gas, signal collection unit for receiving signal outputted by oxygen transducer.

The embodiment of the invention provides a method and device for data evaluation based on voice, belonging to the data processing technology field. The method comprises: performing voiceprint recognition of voice content according to the voiceprint information of the voice content, and performing distinguishing of the voice content according to the result of voiceprint recognition; performing emotion recognition of the voice content obtained after distinguishing, and generating an emotion recognition result; generating voice text according to the voice content obtained after distinguishing, performing emotion analysis of the voice text, and generating an emotion analysis result; and according to the emotion recognition result and the emotion analysis result, performing evaluation of the voice content prior to distinguishing, and generating an evaluation result. According to the embodiment, the data evaluation human cost is reduced, the evaluation data is not easy to lose, and the evaluation result is more objective and comprehensive.

The invention discloses a reliability-based maintenance evaluation method comprising steps of a fault mode and fault cause analysis, a fuzzy fault influence analysis, equipment maintenance level determination, and maintenance mode determination. According to the evaluation method and system, a proper equipment maintenance strategy can be formulated based on an equipment maintenance level, so that the maintenance cost can be lowered, secure and reliable operation of enterprise production can be guaranteed; and the requirement of modern enterprise equipment management can be met.

The invention relates to an opto-acoustic and ultrasonic bimodal synchronous imaging system, which is applied to diagnostic imaging of tested tissues in the medical field. The imaging system comprises a host machine, a pulse laser, as well as a multi-channel ultrasonic probe, a data acquisition module, a data processing and image reconstruction module and a display module which are sequentially connected, wherein the host machine is connected to the multi-channel ultrasonic probe and the pulse laser; the multi-channel ultrasonic probe clings to the tested tissues; and the pulse laser is opposite to the tested tissues. Compared with the prior art, the imaging system disclosed by the invention has the advantages of being synchronous, precise, consistent in proportion and the like.

The invention provides a comprehensive evaluation method of roller compacted concrete dam layer characteristics and states. The comprehensive evaluation method comprises the following steps of (1) determining target problem influencing factors and layers, sufficiently considering influencing factors of the roller compacted concrete dam layer characteristics and states in practical engineering, and building a deformation index, transfusion index and stress index layering evaluation system; (2) determining estimation scales, standards and measuring methods of evaluation indexes; (3) building a deformation, transfusion and stress monitoring model for roller compacted concrete dam; (4) adopting a G1 method to empower the evaluation indexes; and (5) conducting comprehensive evaluation on the roller compacted concrete dam layer characteristics and states through cloud model conversion of ground floor evaluation indexes and comprehensive cloud calculation of a last layer indexes. The comprehensive evaluation method is based on a cloud model and uses real time monitoring data of the roller compacted concrete dam to serve as an analysis basis, overcomes the defect that a traditional method can only evaluate certain point or certain time of the roller compacted concrete layer, and achieves dynamic and comprehensive evaluation of the roller compacted concrete dam layer characteristics and states.

The invention provides a comprehensive evaluation method for primary frequency modulation performance of a generator set. The comprehensive evaluation method comprises the following steps of determining an index for evaluating the primary frequency modulation performance of the generator set; performing normalized processing on the index for the primary frequency modulation performance of the generator set; determining the weight of the index for the primary frequency modulation performance of the generator set by a subjective and objective weight combination method; and evaluating the grade of the primary frequency modulation performance of the generator set based on a matter-element extension method. According to the comprehensive evaluation method, the dynamic primary frequency modulation performance index is introduced; the advantages of the subjective weight and the objective weight are combined to solve the weight of the primary frequency modulation performance index; the comprehensive evaluation for the primary frequency modulation performance of the generator set can be carried out based on the matter-element extension method; and in addition, the evaluation result is objective, reasonable and safe, so that foundation is laid for assessment of a dispatching department of an electric power system.

The invention relates to an LCC theory-based method of comprehensive evaluation of a transmission network planning scheme. The method is characterized in that the method comprises the following steps that: step 1.1, according to power grid data published by an electric power company, calculation is respectively carried out on risk indexes Rs, efficiency indexes Es and LCC indexes Cs of N transmission network planning schemes by employing different computing methods; step 1.2, the risk indexes Rs, the efficiency indexes Es and the LCC indexes Cs of the N transmission network planning schemes are respectively substituted into a formula (1) to obtain N composite indicators RECs, wherein the formula is: REC= R + E + C (1) and the risk indexes Rs, the efficiency indexes Es and the LCC indexes Cs are obtained by the step 1.2; and step 1.3, comparison is carried out on the N composite indicators RECs that are obtained by the step 1.2; and a scheme that is corresponded to a composite indicator REC with a minimum numerical value is an optimum scheme and a scheme that is corresponded to a composite indicator REC with an infinite numerical value is an ineffective scheme. According to the invention, economy and technique rationality of a transmission network planning scheme as well as an influence on the environment can be evaluated comprehensively; and coordination optimization of the transmission network planning in the aspects of economy, technology and environmental protection can be realized.

The invention relates to a false separability evaluation method for a flight control system of unmanned aerial vehicle. In order to realize the optimal design of the flight control system of unmanned aerial vehicle, the system fault separability degree needs to be evaluated during the design stage of the unmanned aerial vehicle. The control system model of the unmanned aerial vehicle is set up in the invention according to the principle and fault type of flight control system of unmanned aerial vehicle;fault diagnosis residual generator is built by equivalent space method; the fault separation condition is set up by the cosine distance of the residual vector caused by the different faults; the fault separation complexity is evaluated by the similarity ration of the residual vector; the distance similarity is combined with the direction similarity in the mode identification, and false separability ration evaluation index is suggested. The evaluation method can evaluate the difference of the residual vector in the direction and distance caused by different false,and a reference basis can be provided to the design of the unmanned aerial vehicle and the fault separation algorithm.

The invention relates to an air traffic control real-time regulation effectiveness evaluation system, in particular to a real-time regulation effectiveness evaluation system for air traffic controllers. The system comprises a real-time operation data acquisition module, a real-time operation data processing module, a central database, a history operation data acquisition module and a real-time regulation effectiveness evaluation module, wherein the real-time operation data acquisition module is used for acquiring position information data, flight information data, flight plant data of an air traffic control automatic system, air-ground communication data and radar comprehensive flight path data; the real-time operation data processing module is used for filtering and processing acquired real-time operation data; after the processed real-time operation data is transmitted to an index assessment module, an obtained index is saved in the central database; the central database is used for storing and managing data; the history operation data acquisition module is used for acquiring history operation data; and the real-time regulation effectiveness evaluation module comprises a quantification evaluation module and a real-time regulation effectiveness comprehensive evaluation module. The air traffic control real-time regulation effectiveness evaluation system is applied to the field of civil aviation air traffic control.

The invention provides a gait analysis system aiming at small animals (such as mice, cats, chickens, and the like). The gait analysis system comprises a positioning and pressure measuring device, a three-dimensional force measuring device, a track device, a signal processing part and a data analysis and display part, wherein the positioning and pressure measuring device is used for collecting footmarks and contact pressures of a test object in real time; the three-dimensional force measuring device is used for measuring parameters of three-dimensional force, and the like of the test object in still and walking processes; the track device is used for inducing and controlling creeping actions of the test object; the signal processing part is used for carrying out amplification, filtering, analog digital conversion, and the like on caught original signals; and the data analysis and display part is used for further calculating gait parameters of step lengths, step frequencies, center-of-gravity shifts, and the like according to measured data and displaying results. The gait analysis system can quantitatively evaluate the gait of the test object, comprising the gait parameters of the step frequencies, the step lengths, distances among limbs, the pressure, the center-of-gravity shift, and the like, and can measure the gait parameters of the test object in a state of a slope or touchdown only by posterior limbs through the preset track.

The present invention discloses a research method of trajectory design and on-site tracking and adjustment of a shale oil horizontal well, including identification and evaluation of shale oil sweet spots, optimal selection and trajectory design of the horizontal well, and on-site tracking and adjustment of the shale oil horizontal well. The “four-optimal and two-fine” practice in the research method of trajectory design and on-site tracking and adjustment of the shale oil horizontal well of the present invention lays a foundation for high and stable production of shale oil in closed lake basins and the integration of production and reserves increase. It provides a set of technical methods for the design and research of optimal selection of horizontal well locations and dynamic tracking analysis of drilling in shale oil development areas, and has great significance for reference and popularization.