3145 results about "Quantitative Evaluations" patented technology

A noise-free portable EEG system is provided. The system has hardware and software and can evaluate mental state quantitatively. The quantitative data of mental states and their levels can be applied to various areas of brain-machine interface including consumer products, video game, toys, military and aerospace as well as biofeedback or neurofeedback.

Traditional methods of prediction of the likelihood of churning in a given market such as wireless telecommunications are improved by inclusion of social network analysis to predict churning by members of a population in response to churning by any given individual member of that population. A sphere of influence of individual members of the population on other members of the population are modeled and analyzed through a plurality of degrees of separation and quantitatively evaluated by a number of relational algebraic joins in which at least one such join includes weights to assert a diminishing influence with number of degrees of separation.

A system and method implemented as a software tool for generating alpha matte sequences in real-time for the purposes of background or foreground substitution in digital images and video. The system and method is based on a set of modified Poisson equations that are derived for handling multichannel color vectors. Greater robustness is achieved by computing an initial alpha matte in color space. Real-time processing speed is achieved through optimizing the algorithm for parallel processing on the GPUs. For online video matting, a modified background cut algorithm is implemented to separate foreground and background, which guides the automatic trimap generation. Quantitative evaluation on still images shows that the alpha mattes extracted using the present invention has improved accuracy over existing state-of-the-art offline image matting techniques.

The invention relates to a system and a method for assessment of walking and miming gait in human. The method is preferably based on the fusion of a portable device featuring inertial sensors and several new dedicated signal processing algorithms: the detection of specific temporal events and parameters, 5 optimized fusion and de-drifted integration of inertial signals, automatic and online virtual alignment of sensors module, 3D foot kinematics estimation, a kinematic model for automatic online heel and toe position estimation, and finally the extraction of relevant and clinically meaning-full outcome parameters. Advantageously including at least one wireless inertial module attached to foot, the system provides common spatio-temporal parameters (gait cycle time, stride length, and stride velocity), with the 10 advantage of being able to work in unconstrained condition such as during turning or running. It furthermore may provide original parameters for each gait cycle, both temporal (load, foot-flat and push duration) and spatial (foot clearance and turning angle), and their inter-cycles variability. The system and method according to the invention allows the assessment of various aspects of gait which have shown recently to be of premium importance in research and clinical field, including foot clearance, 15 turns, gait initiation and termination, running, or gait variability. The system may be light weight, easy to wear and use, and suitable for any application requiring objective and quantitative evaluation of gait without heavy laboratory settings.

A system and method for a comparative web search engines, search result summarization, web snippet processing, comparison analysis, information visualization, meta-clustering, and quantitative evaluation of web snippet quality are disclosed. The present invention extends the capabilities of web searching and informational retrieval by providing a succinct comparative summary of search results at either the object or thematic levels.

The invention discloses a method for flexibly and automatically adjusting posture of an airframe of an airplane. The method comprises: the spatial position of a target of the airframe is measured through a laser tracking instrument; a measuring result and a digital standard model are subjected to matched analysis to calculate the posture of the airframe; and finally a plurality of three-coordinate positioner units are controlled and driven to realize adjustment of the posture of the airframe. The whole posture adjusting process comprises three stages: a posture adjusting preparation stage, an airframe posture adjusting stage and a posture adjusting result evaluation and analysis stage to realize automatic and non-stress posture adjustment of the airframe. The method has the following advantages: 1, the method can realize digital posture adjustment of the airframe; 2, the airframe is supported by the plurality of the positioner units; and in the posture adjusting process, motion cooperativity of the airframe is monitored in real time to realize non-stress posture adjustment; 3, the method has good flexibility and compatibility and can meet the requirement of posture adjustment of various airplane models; and 4, the method can carry out quantitative evaluation and analysis on the posture adjusting result and obtain the position and posture of the airframe in a scene coordinate system.

A method and system for analyzing a “detail” (the use of promotional materials in combination with a sales pitch), measures the effectiveness of a sales presentation and its ability to drive market share through a standardized, quantitative evaluation of the entire sale presentation and its related components. The method includes administering a two, different surveys. The first survey, the Detail Performance Monitor survey, comprises an “in the field” test of how respondents are responding to various marketing strategies by tracking subsequent behavioral data of the respondents and comparing the behavioral data to the survey results. The second survey, the Detail Assessment survey, comprises an “in the lab” test of how various marketing strategies affect respondent attitude towards a product by comparing respondent attitude before and after presentation of a simulated “detail” that represents the marketing strategy.

The invention relates to a device and a method for a multi-axis fretting fatigue test of a steel wire. The device comprises a base frame, a pull-torsion fatigue system, a swing loading system and a condition monitoring system, wherein the base frame comprises a base, support stand columns, bearing beams and support fixture blocks, the support stand columns are symmetrically arranged on the base; the bearing beams are respectively arranged on the tops of the support stand columns; the support fixture blocks are respectively arranged in the middle parts of the support stand columns; the pull-torsion fatigue system comprises a support system, a torsion driving system and a pull-pull fatigue system; the swing loading system comprises a swing driving system and a loading system; the condition monitoring system comprises a fretting measurement system, an axial fatigue load measurement system, a torsion measurement system and a swing measurement system. The torsion angle of the fatigue steel wire can be obtained through a crank-link mechanism by adjusting the eccentric position of an eccentric block; the multi-axis fretting fatigue test of the steel wire can be realized in the composite motion modes such as pull-pull fatigue, torsion and variable crossing angle swing and the like; the device and the method are used for disclosing the multi-axis fretting fatigue fracture mechanism of the steel wire, and carrying out quantitative evaluation on multi-axis fretting fatigue damage evolution and multi-axis fretting fatigue life of the steel wire.

Provided are a stroke patient rehabilitation training system and method based on brain myoelectricity and a virtual scene. Control over the virtual rehabilitation scene is achieved through myoelectric signals, and rehabilitation training intensity is adjusted in a self-adaptation mode with a brain myoelectricity fatigue index combined. The design of the virtual rehabilitation scene is completed with the needs of stroke patient rehabilitation training and the advice of a rehabilitation physician combined, the brain fatigue index is provided, and quantitative evaluation on brain region fatigue is achieved. The surface myoelectric signal features under different motion modes of an arm are extracted, the motion intention of a patient is obtained, and control over the virtual rehabilitation scene is achieved. The muscle fatigue and brain fatigue index comprehensive features are extracted, the fatigue state of a rehabilitation patient is obtained, self-adaptation rehabilitation training scene adjusting is achieved, rehabilitation training intensity is relieved or enhanced, and secondary damage caused by improper training is avoided. The system and method have the advantages of being high in safety, high in intelligence and scientific in training, and damage cannot happen easily.

A method of characterizing an adnexal mass is disclosed, the method is effected by (a) obtaining a cross-sectional or projectional image of an examined adnex including the adnexal mass; (b) extracting boundaries of the adnexal mass; and (c) using a first algorithm for quantifying at least one morphological feature of the adnexal mass, thereby providing quantification of the at least one morphological feature.

The invention relates to a method for determining reserve volume of a nonhomogeneous sandstone reservoir. The method comprises the following steps of: obtaining original stratum conditional parameters of an oil reservoir, carrying out logging data liquid displacement to obtain a corresponding elastic parameter curve corresponding to saturated water of a reservoir; based on saturated water loggingcurve as well as shale content and porosity distribution function of the sandstone reservoir and a mudstone interlayer which are obtained by statistics, determining a rock physical model by utilizingrock physical diagnosis, and calculating relation between elastic parameter variation of the nonhomogeneous sandstone reservoir and water saturation and net gross ratio of the reservoir; calculating accumulated impedance attribute by utilizing earthquake impedance data, quantitatively interpretating effective sandstone thickness and oil-gas-bearing saturation of the reservoir by virtue of the built template, and producting to obtain the reserve volume of the oil reservoir. In the method provided by the invention, elastic parameter calculation in earthquake scale and plate establishment are carried out, and earthquake accumulated impedance attribute is utilized, thus quantitative evaluation on the net gross ratio and the saturation of the nonhomogeneous sandstone reservoir is realized, andthe aim of determining the reserve volume is achieved.

The invention belongs to the technical field of cloud computing and networks, and particularly relates to a Web multilayer application dynamic resource adjustment method based on IaaS layer application perception. The Web multilayer application dynamic resource adjustment method based on IaaS layer application perception includes the steps that an IaaS cloud platform perceives a Web multilayer application framework, namely application management and information maintenance are added on the basis of traditional IaaS management so that the state of a Web multilayer application above the IaaS layer can be perceived; dynamic resource demand quantitative evaluation is carried out on the basis of perception, namely, modeling is carried out firstly, and then a quantitative analysis method and an algorithm of dynamic resource demands of the Web multilayer application are provided; dynamic resource adjustment is carried out on the basis of application load perception, namely when the load of the Web multilayer application changes, the resource demands are detected out in time and quantified, and a response is given so that resource allocation can be adjusted dynamically. The resource allocation of a virtual machine is optimized and adjusted under the situation of not affecting application performance, potential resource waste is avoided, and the overall resource utilization rate of a data center is increased.

The system includes information acquisition module, module for detecting leaking hole, testing verification module, module and database for evaluating security and survivability; the information acquisition module sends collected information of target system to the module for detecting leaking hole; the module for detecting leaking hole carries out detecting leaking hole for target system; the testing verification module carries out test and verification for leaking hole in safety existed in target object; module for evaluating security and survivability evaluates security and survivability for target system based on information of leaking hole. Simulating man induced attack to reflect real status of object to be measured, using active attack to carry out testing, the invention combines static analysis with dynamic test, giving out qualitative and quantitative evaluation and suggestion for survivability of system.

A medical imaging probe (102) for contact with an imaging subject includes an indicium placement apparatus for, while the probe is in contact, selectively performing an instance of marking the subject so as to record a position of the probe. The device may further include a feed-back module for determining whether an orientation, with respect to a the mark, that currently exists for a medical imaging probe of the device meets a criterion of proximity to a predetermined orientation. Responsive to the determination that the criterion is met, a quantitative evaluation may be made automatically and without need for user intervention, vis live imaging via the probe, of a lesion that was, prior to the determination, specifically identified for the evaluation. Change, such as growth (116), in the lesion, like a brain lesion, may thereby be tracked over consistent sequential imaging acquisitions, such as through ultrasound.

The invention belongs to a risk evaluation method for the operation of a large power grid. The method comprises the following steps of (1) statistics of fault and risk factors; (2) computation of risk probability; (3) risk quantitative evaluation based on the load loss; (4) classification and result evaluation on risk index. According to the risk evaluation method for the operation of the large power grid, the occurring probability of power system accidents and the number of load loss of the system are combined to form a new quantitative index, so a scheduling person can be helped to perform real-time risk evaluation and analysis, can further comprehensively master the safe operation condition of the power grid, and controls the risk level of the system within a reasonable range by adopting necessary measures, and the occurrence of the disaster fault is avoided. The real-time evaluation and management and control on the risk are realized by a power gird scheduling center and the method belongs to a load loss-based risk evaluation method for the operation of the large power grid.

A probability evaluation method of failure caused by typhoon to a power transmission line is suitable for evaluating failure probability after the power transmission line is affected by the typhoon. The method mainly comprises the steps of quantitative evaluation on the power transmission line affected by the typhoon as well as environmental factors and probability modeling of the line failure caused by the typhoon. In the quantitative evaluation, ways of the failure caused by the typhoon to the power transmission line and key factors including inner factors (design strength, state and the like of lines) and outer factors (typhoon, terrain, rainfall and other factors) are mainly evaluated; and in the probability modeling, a reasonable failure probability model is mainly established to calculate the line failure probability corresponding to the quantitative evaluation results of the key factors. The probability evaluation method has the beneficial effects that the evaluation on various loads and real-time anti-wind capability of complicated lines and towers is avoided, the effect of the inner factors and the outer factors and the characteristics of the various failure ways are simultaneously considered, a mechanism that the failure of the line is caused by the typhoon is satisfied, and the capacity of a power system in defending the typhoon disaster is improved in combination with a wide-area measurement, analysis, protection and control system.

The present invention provides a multi-robot task allocation method based on multi-objective optimization. A weighted summation mode is adopted to carry out modeling on a time utility objective and an energy utility objective and the time utility objective and the energy utility objective are optimized so as to implement multi-robot task allocation; energy utility is used for evaluating energy consumption of robots in the task completing process; and time utility is used for evaluating time consumption of the robots in the task completing process. According to the method, an evaluation mechanism of two factors, i.e. the time consumption and the energy consumption, can be effectively shown in the multi-robot task completing process, and thus, computing time is short and the optimal multi-robot task allocation scheme set can be rapidly obtained, so that task allocation time is greatly reduced and task completing efficiency is improved. According to the present invention, the problem of task allocation in a multi-robot system is more comprehensively and more systematically solved, a task allocation result quality quantitative evaluation index based on the mechanism is increased and improvement on scientificity and reasonability of a task allocation result is realized.

The invention provides an upper limb rehabilitation system and method based on a myoelectric signal and a virtual reality interaction technology. The system comprises a myoelectric signal acquiring and processing part, a virtual reality man-machine interaction part and a muscle function evaluation part, wherein the myoelectric signal acquiring and processing part is composed of a data acquiring module, a signal processing module and a model control module; the virtual reality man-machine interaction part is composed of an upper computer virtual environment module and a force feedback device module; the muscle function evaluation part is composed of a muscular tension quantitative evaluation module and a muscle cooperativeness quantitative evaluation module. According to the rehabilitation method, myoelectric control is used so that a patient subjective intention can be reflected better; a patient keeps initiative in a rehabilitation process by using a virtual reality technology, and the portability, the safety and the effectiveness of rehabilitation trainings are improved. According to the upper limb rehabilitation system and method, an existing clinical rehabilitation evaluation manner can be combined and a muscle function state of the patient is objectively evaluated, so that rehabilitation training standards are provided for the patient and evidences for formulating a therapeutic scheme are provided for rehabilitation doctors.