225 results about "Time evolution" patented technology

A method for recognizing an audio sample locates an audio file that most closely matches the audio sample from a database indexing a large set of original recordings. Each indexed audio file is represented in the database index by a set of landmark timepoints and associated fingerprints. Landmarks occur at reproducible locations within the file, while fingerprints represent features of the signal at or near the landmark timepoints. To perform recognition, landmarks and fingerprints are computed for the unknown sample and used to retrieve matching fingerprints from the database. For each file containing matching fingerprints, the landmarks are compared with landmarks of the sample at which the same fingerprints were computed. If a large number of corresponding landmarks are linearly related, i.e., if equivalent fingerprints of the sample and retrieved file have the same time evolution, then the file is identified with the sample. The method can be used for any type of sound or music, and is particularly effective for audio signals subject to linear and nonlinear distortion such as background noise, compression artifacts, or transmission dropouts. The sample can be identified in a time proportional to the logarithm of the number of entries in the database; given sufficient computational power, recognition can be performed in nearly real time as the sound is being sampled.

A method and device are presented for use in non-invasive optical measurements of at least one desired characteristic of patient's blood. A condition of artificial blood kinetics is created at a measurement location in a patient's blood perfused fleshy medium and maintained for a certain time period. This condition is altered over a predetermined time interval within said certain time period so as to modulate scattering properties of blood. Optical measurements are applied to the measurement location by illuminating it with incident light beams of at least two different wavelengths in a range where the scattering properties of blood are sensitive to light radiation, detecting light responses of the medium, and generating measured data indicative of time evolutions of the light responses of the medium for said at least two different wavelengths, respectively, over at least a part of said predetermined time interval.

A method for providing location-based nowcast, comprises the steps of: a) initiation of a request, by an end-user, for a time evolution of user-selected nowcast weather parameters, the transmission of the request being made over a public communication network to a nowcast request processor; b) the determination of the end-user's actual location by the nowcast request processor; c) the nowcast request processor gathering raw weather data from data sources; d) processing the raw data into a time-series of nowcast parameter maps; e) extracting the time evolution of the user requested nowcast parameters from the time-series of nowcast parameter maps by positioning the end-user's location on said time series; and f) distributing the requested information to end-user regarding the user-selected nowcast parameters within the extracted time evolution.

An irradiation apparatus for irradiating by scanning a target volume according to a predetermined dose profile with a scanning beam of charged particles forming an irradiation spot on said target volume, said apparatus comprising: a beam generating device,

• • a reference generator for computing, from said predetermined dose profile, through a dynamic inverse control strategy, the time evolution of commanded variables, these variables being the beam current I(t), the spot position settings x(t),y(t) and the scanning speed settings v_x(t), v_y(t),
  • a monitor device having means for detecting at each time (t), the actual spot position as a measured position defined by the values x_m(t),y_m(t) on the target volume,

characterised in that said irradiation apparatus further comprises means for determining the differences e_x(t), e_y(t) between the measured values x_m(t), y_m(t) and the spot position settings x(t) and y(t), and means for applying a correction to the scanning speed settings v_x(t) and v_y(t) depending on said differences e_x(t), e_y(t). The present invention is also related to a monitor for determining beam position in real-time.

Mechanical systems wear or change over time. Data collected over a system's life can be input to statistical learning models to predict this wear/change. Previous work by the inventors trained a flexible empirical regression model at a fixed point of wear, and then applied it independently at time points over the life of an engine to predict wear. The embodiment disclosed herein relates those wear predictions over time using a time evolution model. The time evolution model is sequentially updated with new data, and effectively tunes the empirical model for each engine. The combined model predicts wear with dramatically reduced variability. The benefit of reduced variability is that engine wear is more evident, and it is possible to detect operational anomalies more quickly. In addition to tracking wear, the model is also used as the basis for a Bayesian approach to monitor for sudden changes and reject outliers, and adapt the model after these events.

A method and system of monitoring the movement of at least one front in an inter-well region is comprised of: providing a first well representing the origination of at least one front (such as a saturation front or a salinity front); providing one or more monitoring locations, each equipped with at least one sensor; and monitoring the arrival of at least one front at one or more monitoring locations. The origination well may be any type of permanent or temporary well, but is preferably an injector well. Likewise, the monitoring location(s) may be any type of permanent or temporary well such as an observation well, a production well, an exploratory well, and an appraisal well. Information regarding front arrival times may be used to characterize or appraise the formation. Front arrivals may be monitored as a function of time to develop their respective time evolution and shape.

Systems and method for modeling system dynamics, including extracting features representative of a temporal evolution of a dynamical system, further including deriving one or more vector trajectories by performing sliding window segmentation of one or more time series; applying a linear test to determine whether the one or more vector trajectories are linear or nonlinear; and performing linear or nonlinear subspace decomposition on the vector trajectory based on the linear test. The system and method may generate a system evolution model from the extracted features of the dynamical system and determine a fitness score of the system evolution model.

System and method for modeling a content-based network. The method includes finding single mode clusters from among network (sender and recipient) and content dimensions represented as a tensor data structure. The method allows for derivation of useful cross-mode clusters (interpretable patterns) that reveal key relationships among user communities and keyword concepts for presentation to users in a meaningful and intuitive way. Additionally, the derivation of useful cross-mode clusters is facilitated by constructing a reduced low-dimensional representation of the content-based network. Moreover, the invention may be enhanced for modeling and analyzing the time evolution of social communication networks and the content related to such networks. To this end, a set of non-overlapping or possibly overlapping time-based windows is constructed and the analysis performed at each successive time interval.

The invention discloses a base station power-saving method based on long time evolution (LTE) and time division duplex (TDD), comprising the following steps: establishing a community according to default setting, setting original state of all downlink sub-frames in the community as open; carrying out statistic on downlink occupied resource according to community downlink sub-frame status and traffic volume the community loads; calculating average downlink occupied resource according to downlink occupied resource; choosing the downlink sub-frames which need to be closed when the proportion of the average downlink occupied resource to system downlink available resource is less than or equal to preset threshold value of closed sub-frames; resetting status of the downlink sub-frames in the community, resetting the status of downlink sub-frames and setting the status of the downlink sub-frames which need to be closed as closed. The invention also discloses a base station power-saving system based on the LTE and TDD system. Based on the method and the system of the invention, total power of the base station can be saved and the purpose of power saving is achieved.

The invention provides a time division long term evolution (TD-LTE) rapid switching method based on relay switching. The TD-LTE rapid switching method based on the relay switching aims at the phenomenon that channel switching of a high speed railway TD-LTE communication system is frequent and aims at meeting the requirements for short switching time and a high switching success rate. The TD-LTE rapid switching method based on the relay switching is characterized in that a train head train-mounted relay of a train and a train tail train-mounted relay of the train are respectively and additionally provided with a back-up train-mounted relay, main train-mounted relays and the back-up train-mounted relays are connected with a user in the train, when the train does not enter a switching zone, the user carries out communication through the main vehicle-mounted relays, when a source base station evolved node B (eNodeB) decides that switching is required according to a measurement report of user equipment (UE), the main train-mounted relays carry out the switching, meanwhile, the back-up train-mounted relays are started to transmit data flow, and an original data link is recovered after the train runs out of the switching zone. According to the TD-LTE rapid switching method based on the relay switching, switching time delay is reduced, and particularly, the phenomenon of call drop due to failed wireless link caused by hard switching of a long time evolution (LTE) system is reduced. The aim of rapid switching in high-speed moving environment is achieved. The times of communication call drop are reduced. The switching success rate is improved. Service quality of a high-speed broadband mobile service is enhanced. A multi-media broadband mobile internet service inside the high-speed railway train is developed in a promoted mode. The day-by-day increasing requirements of a passenger for a mobile communication service are met.

The invention provides a positioning assisting data configuration method and a positioning assisting data configuration device for user equipment. The method comprises the following steps that: an evolved serving mobile location center (E-SMLC) acquires positioning assisting information from an evolved node B (eNB) through an S1 interface message and an SLs interface message; and the E-SMLC transmits the positioning assisting information serving as one of positioning assisting data to the user equipment (UE) for positioning. The embodiment of the invention discloses a positioning assisting data configuration flow in a long time evolution (LTE) system so as to supplement the conventional positioning framework flow.

The invention provides a time division-long time evolution (TD-LTE)-based wideband multimedia cluster system and a method for implementing hierarchical dispatching of multiple dispatcher stations. The invention relates to a method for hierarchically dispatching by the multiple dispatcher stations, which solves the problem that the commanding and dispatching requirements of different industries are not conveniently met due to high cost and complicated setting of hardware configuration of the multiple dispatcher stations, and single dispatching mode of the multiple dispatcher stations in the conventional digital cluster technology. The system comprises a terminal, a broadband wireless access subsystem, a network subsystem and an operation maintenance subsystem. The method comprises the following steps that: as the level and authorization setting of a direct current (DC) cable dispatcher station are stored in a home subscriber server (HSS) attribution domain signing server, when the DC cable dispatcher station initiates primary dispatching operation, a Tivoli directory server (TDS) cluster dispatching server acquires information of the DC cable dispatcher station on the HSS attribution domain signing server through a D6a interface and judges whether the DC cable dispatcher station can perform the dispatching operation or not according to the acquired information. Therefore, the industrialization of broadband wireless access systems in China is greatly promoted.

The embodiment of the invention discloses a method for renewing system message, which comprises the following steps: in a long time evolution system, a piece of user equipment UE reads and saves the changed system message according to change information of the system message sent by a network side. The embodiment of the invention also discloses a network device used for renewing the system message, which comprises a communication module, a system message renewing module and a change information module. The embodiment of the invention also discloses a piece of user equipment used for renewing the system message, which comprises a communication module, an analysis module, a message renewing module and a memory. The embodiment of the invention also discloses a system for renewing the system message which comprises a base station and a UE, wherein, the base station is used for sending the change information of the system message and the changed system message, and the UE is used for receiving the change information of the system message sent by the network side and then reads and saves the changed system message according to the change information. The embodiment of the invention realizes the renewal of system message in the LTE.

A method for non-invasively probing at least one interface property in a layered structure having at least one interface. In one embodiment, the method includes the steps of exposing the layered structure to an incident photon beam at an incident angle to produce a reflection beam, measuring intensities of the second harmonic generation signals from the reflection beam, and identifying an initial second harmonic generation intensity and a time evolution of second harmonic generation intensity from the measured second harmonic generation intensities so as to determine the at least one interface property of the layered structure.

A method of and system for analyzing image data representative of a sequential set of images of a spray plume, each of the images being representative of a density characteristic of the spray plume (i) along a geometric plane that intersects the spray plume, and (ii) at a predetermined instant in time, that in one aspect comprises sequentially displaying the set of images so as to exhibit a time evolution of the spray plume along the geometric plane. The invention may further integrate the set of images so as to exhibit a time-average representation of the images. In one embodiment, the invention comprises a general purpose computer executing software that receives and sequentially displays the set of images so as to exhibit a time evolution of the spray plume along the geometric plane, and provides a user interface for measuring one or more spray plume parameters associated with the spray plume within one or more of the images.

Modeling and simulation of free and forced structural vibrations is essential to an overall structural health monitoring capability. In the various embodiments, a first principles finite-difference approach is adopted in modeling a structural subsystem such as a mechanical gear by solving elastodynamic equations in generalized curvilinear coordinates. Such a capability to generate a dynamic structural response is widely applicable in a variety of structural health monitoring systems. This capability (1) will lead to an understanding of the dynamic behavior of a structural system and hence its improved design, (2) will generate a sufficiently large space of normal and damage solutions that can be used by machine learning algorithms to detect anomalous system behavior and achieve a system design optimization and (3) will lead to an optimal sensor placement strategy, based on the identification of local stress maxima all over the domain.

The invention discloses a hydrate sediment flow solid output measuring device combining an X-CT technology and a measuring method. The measuring device comprises an X-ray penetration type reaction kettle, an X-CT scanning analysis system, a vacuum system, a temperature and pressure control system, a hydrate sample preparation system, a sand production monitoring system and a permeability measuringsystem, wherein through integrated application of a sand production-seepage system under the micro-scale multi-factor coupling effect, the coupling relationship of a reservoir structure and physicalspace-time evolution and flow solid output under the multi-factor collaborative action can be quantitatively described, different hydrate generation modes can be selected according to the experiment requirements, different hydrate occurrence states in natural sediments can be simulated and studied, and the device and the method can be used for researching the space-time evolution characteristics of a sediment pore structure under the hydrate convergence and divergence and effective stress conditions and an influence rule of the space-time evolution characteristics on sediment flow solid output, so that the theoretical bottleneck of the hydrate reservoir structure and a physical evolution and flow solid output mechanism in a hydrate production process is broken through, and the device and the method have important engineering significance to deeply understand a depressurizing production law of the South China Sea, practically improve the biogas production efficiency and perfect a depressurizing production technology system.

The invention relates to a 3D MIMO channel modeling method. The method includes the following steps that: (1) simulated scenes and network layout are determined, large-scale parameters are calculated according to the scenes and calculated correlations; (2) small-scale parameters are generated sequentially based on the large-scale parameters, a probability density function and the scenes; (3) a channel coefficient is calculated; (4) the small-scale parameters are updated according to a calculation result, and a drift model is built; and (5) time evolution is carried out according to the drift model, and then, modeling is carried out. According to the 3D MIMO channel modeling method of the invention, short-term time evolution of the channel coefficient is realized through updating time delay, a departure angle, an arrival angle, polarization, shadow fading and a K factor; smooth transition between adjacent channel segments is supported; a visual-range scene and a non-visual-range scene are simulated jointly by a common framework structure, and therefore, the complexity of a model can be reduced, and multi-unit scenes can be configured freely; and an algorithm of position graph generation is expanded, and diagonal angle movement directions are considered, and smoother output is created.

A method and apparatus are disclosed for determining a time to failure for an electronic device. The method and apparatus includes estimating a dependency of a bond strength degradation rate on at least one parameter and estimating a temperature profile of the electronic device. Furthermore, the method and apparatus determine a bond strength based on the dependency of the bond strength degradation rate and the temperature profile, and determine the time to failure for the electronic device based on a time evolution of the bond strength.

The invention is related to a method for video quality assessment.

Said method comprises the steps of determining a last spatial distortion by comparing a block of a last frame (I6) of the sequence with a corresponding block of the distorted version of the last frame, determining, in a last-but-one frame, a best-matching block matching said block of the last frame best, determining a last-but-one spatial distortion by comparing the determined best-matching block of the last-but-one frame with a corresponding block of the distorted version of the last-but-one frame, determining a spatio-temporal perceptual distortion value associated with said block using said determined distortions and using the determined spatio-temporal perceptual distortion value for assessing the quality.

The spatial distortion's temporal evolution improves video quality assessment.

The present invention discloses a resource allocation method and a system for a multimedia broadcast service in a 3G long-time evolution system, wherein, the method includes three steps. (1). after receiving the multimedia broadcast service instruction sent by a broadcast multicast service center, a central processing module initiates a resource query instruction to the subdistrict related to the multimedia broadcast service, determines the resource configuration information of sending the multimedia broadcast service according to the returned resource information and issues the determined resource configuration information to the subdistrict; (2). according to the received configuration information, the subdistrict determines if configuration resources are available, and returns a message to the central processing module, and the message determines if configurations are successful; thirdly; (3) the central processing module sets the successfully configured subdistrict as the single-frequency network (SFN) district of the multimedia broadcast service. The present invention sets each subdistrict related to the multimedia broadcast service to a SFN district, which is favorable to the realization of the macro-diversity of UE (user equipment). The resource configuration flow of the present invention is perfect, and realization is simple.

An oscilloscope that is capable of displaying simultaneously multiple waveforms representing time evolution of a signal during respective acquisition intervals acquires waveform data using a first set of acquisition parameters and generates a display based on that waveform data. If the display includes a waveform that is visually distinct from other displayed waveforms, the user selects a feature that distinguishes the visually distinct waveform from other displayed waveforms. The oscilloscope automatically derives updated acquisition parameters that discriminate between the selected feature and other features of the displayed waveforms. The oscilloscope then acquires waveform data using the updated acquisition parameters and generates a display based on that waveform data.