1357results about How to "Reduce learning costs" patented technology

The invention provides a multiwindow switching method and device of a touch screen terminal. The method comprises the following steps of: starting multiwindow switching of all pages opened in a terminal browser according to multiwindow switching and triggering operations of a user; carrying out screenshot operation on the pages opened in the terminal browser, and utilizing a screenshot as a thumbnail of a corresponding page; arranging and displaying the thumbnail in a preset size in the terminal browser so as to display a part of or all of pages opened in the terminal browser; and switching a current page to a page corresponding to the thumbnail selected by the user according to the selection of the user on the thumbnail. By adopting the multiwindow switching method and device of the touch screen terminal, the user can be ensured to switch web pages more intuitively and conveniently on a mobile terminal on the basis of no interruption of browsing consistency.

The invention discloses a user interaction system and a method. The system comprises an information operation processing unit, a three dimensional display unit and a motion capture unit; wherein the information operation processing unit is used for providing three dimensional interface display signals for the three dimensional display unit; the three dimensional display unit is used for displaying a three dimensional interface to a user according to the tree dimensional interface display signals; and the motion capture unit is used for capturing body space mobile information made by the user when the tree dimensional interface is browsed, and sending the body space mobile information to the information operation processing unit. When the user interaction system and the method are applied, the user can indulge in private and interesting virtual information interaction space, and natural information interaction is preformed in the space, so that user interactive experience is enhanced, a large number of meaningful applications can be derived on the basis, and the user is enabled to interact with a digital information world naturally.

The embodiment of the invention discloses a user interaction system and method. The system comprises an interface display module, a three-dimensional positioning module and a calculation processing module. The interface display module is used for providing an interaction interface for a user. The three-dimensional positioning module is used for capturing three-dimensional positioning information of a user scenario and sending the three-dimensional positioning information of the user scenario to the calculation processing module. The calculation processing module is used for calculating the three-dimensional space relative positions of the user eyes and hands relative to the three-dimensional positioning module based on the three-dimensional positioning information of the user scenario and determining positions of interaction hot spots in the interaction interface based on the three-dimensional relative positions and the relative position relation between the three-dimensional positioning module and the interaction interface.

The invention relates to a method for rendering and incrementally updating webpages. The method comprises the following steps: (1) expressing a document object model (DOM) of a webpage to be rendered by using a tree-form data structure, wherein the attribute of DOM nodes is expressed by the attribute of nodes of a virtual DOM and the sub-nodes of the DOM nodes are expressed by a sub-node linear list of the nodes of the virtual DOM; (2) if a corresponding DOM tree does not exist, recursively traversing the virtual DOM, creating the DOM nodes according to the nodes of the virtual DOM, creating the sub-nodes of the DOM nodes according to the sub-node linear list and adding the DOM sub-nodes into a parent node of the DOM sub-nodes; and (3) if the corresponding DOM tree exists, recursively traversing the virtual DOM and the DOM tree at the same time and operating the nodes at corresponding positions in the virtual DOM and the DOM tree. According to the method, the DOM upgrading algorithm is greatly simplified, so that the code amount is decreased and better performance is obtained. The codes have relatively good readability, so that the learning cost of the developers is low and the code amount is decreased.

The invention discloses a mobile wearable non-contact interaction system and method. The system specifically comprises an image acquisition module, a gesture identification module, an embedded microcontroller module, a voice acquisition module, a voice processing module and a bone conduction module which are physically integrated to form equipment capable of being mounted on the head of a user or a portable wearable whole body. The system integrates the interaction functions of gesture detecting and tracking, voice identification and the like; the interaction method is capable of converting interaction information into a control instruction required by a terminal and transmitting the control instruction to the terminal through a network to realize terminal control; in addition, the bone conduction technology is creatively added, so that personalized services can be provided for the user and a new platform enjoying television entertainment can be provided for people with hearing impairment; an existing set-top box is modified, so that the application range of the system can be greatly expanded, the system cost can be reduced, and great convenience is also brought to the user.

The invention provides a registering method and system of face identification access control. The system comprises a mobile terminal, a server and at least one access control device; the method comprises following steps of associating the mobile terminal with an indoor unit; sending the associated mobile terminal information to the server; collecting face data through the build-in camera of the mobile terminal; sending the collected face data information to the server; receiving and storing the face data information sent from the mobile terminal by the server; searching the access control device associated with the mobile terminal information; informing the access control device of downloading the face data information; receiving the downloading notice of the server by the access control device; downloading the face data from the server; registering the downloaded face data in the access control device; associating with a user; and finishing registering. According to the method and the system provided by the invention, the face data can be updated timely; the face can be identified and registered very conveniently; moreover, the face database is enriched; and the identification rate of the access control device in identifying the face is improved.

The invention discloses a natural language inquiry method and system oriented to a software project knowledge map. This method is: 1) extracting the metamodel of software project knowledge map; 2) transforming the natural language query sentence into a series of sub-graphs on the knowledge map meta-model, which are called inference sub-graphs, and measuring the inference sub-graphs; 3) constructing a Cypher query sentence based on that inference sub-graph, executing the Cypher query sentence on the knowledge map of the software project, and returning the query result. The invention can automatically extract the metamodel of the knowledge map of the software project, accurately understand the natural language problem of the user and construct the inquiry, has the characteristics of strong universality and expansibility, and improves the inquiry efficiency of the knowledge map of the software.

The invention provides a big data storage method and device. The method includes the steps of receiving object data, recognizing attribute information of the object data and storing the object data in a first storage sub system in a storage system according to the attribute information of the object data. According to the big data storage method and device, structural data, semi-structural data and non-structural data are unified to be stored in a database platform and an Hadoop platform as objects, performance advantages of a relational database, fault tolerance of the Hadoop platform and an MapReduce framework and support for dynamic data models are effectively made use of, and data modes of the objects and corresponding attribute information are stored in metadata so that the data can be conveniently sent to a proper executing engine to complete an inquiry when data analysis is carried out. Therefore, unified management of large quantities of the structural data and the non-structural data is achieved, management cost is reduced, flexibility and usability of data processing are facilitated, and learning cost of a user who uses the big data storage device is reduced.

The invention discloses a cross-platform mobile application development framework system based on a general-purpose module and a transfer service, and belongs to the field of the mobile Internet. The framework system is mainly composed of a front-end logical layer, a bottom-layer primary layer and a service transfer layer. The front-end logical layer realizes cross-platform application development through components composed of HTML, CSS and JavaScript, and calls the primary function of a mobile phone in cooperation with an open JavaScript interface of the bottom-layer primary layer. The bottom-layer primary layer is an open JavaScript interface of a front-end component gallery so that the primary function of the mobile phone can be called and a service address can be protected through the service transfer layer. The service transfer layer protects the backstage service address through transfer and distribution and realizes switchover of a test environment and a formal environment through configuration. Compared with the prior art, the development framework system can solve the problems that a developer can not freely carry out extension and the backstage service address and a data source are exposed, and is high in application and popularization value.

The invention relates to an electronic musical instrument simulation learning tool. A bottom circuit 2, a baffle 3 and a top circuit 4 are made of three-layered fpc plate flexible circuit material; through pressing keys on the bottom circuit 2 and the top circuit 4, circuit connectors are contacted with a switch through baffle key holes 20, signals are processed to digital signals via a usb interface 6 to be inputted to a multimedia computer, the digital signals are converted to sounds corresponding to a digital musical instrument music score, sounds including those of a violin, a piano, a harmonica, an erhu and the like can be played, 88keys, the three-layered fpc keyboard circuit boards 2 and 4, and the baffle 3 are pressed downwardly and fixed on the surface of a finger board 1 through bolts 8 and bolt holes 23, the keys are distributed corresponding to the sound positions of the bowstring musical instrument, and three parts of software, terminal simulation hardware and a simulation blanket are included.

The invention provides a vehicle-mounted fording depth detection and early warning apparatus. The vehicle-mounted fording depth detection and early warning apparatus comprises a water level height information acquisition module, a control module, a vehicle speed detection module, a display module and an estimation early warning module, wherein the control module is used as a core module to control the operation of the water level height information acquisition module, the vehicle speed detection module, the estimation early warning module and the display module, the estimation early warning module is used for processing and analyzing data acquired by the water level height data acquisition module, determining the water level height and judging whether the danger warning is needed or not. By adopting the vehicle-mounted fording depth detection and early warning apparatus, the fording depth height information of a vehicle can be acquired, and the water level height of a pavement on which the vehicle runs safely is early warned.

A signal processing device includes a signal transform unit which generates observation signals in the time frequency domain, and an audio source separation unit which generates an audio source separation result, and the audio source separation unit includes a first-stage separation section which calculates separation matrices for separating mixtures included in the first frequency bin data set by a learning process in which Independent Component Analysis is applied to the first frequency bin data set, and acquires a first separation result for the first frequency bin data set, a second-stage separation section which acquires a second separation result for a second frequency bin data set by using a score function in which an envelope is used as a fixed one, and executing a learning process for calculating separation matrices for separating mixtures, and a synthesis section which generates the final separation results by integrating the first and the second separation results.

The invention relates to a facial-recognition-based network teaching method and system. Facial feature identification can be carried out on a student in real time during the whole courseware learning period, so that the network teaching can realize the same effect as the face-to-face teaching. Meanwhile, a certain number of times of failure is allowed, so that a stable and smooth learning environment can be provided for the student in a real-time monitoring mode and the learning of the student can be prevented from being influenced due to the detection failure or other factors. In addition, the system also provides expression management, so that the teacher can know the reflection of the student conveniently during the courseware learning and thus the network teaching environment is close to the face-to-face teaching. On the basis of the off-line learning function provided by the system, the student can carry out learning on any occasion and an objective of real-time monitoring can be achieved. Besides, with the log management module provided by the system, no more network flow is increased because of real-time monitoring when the student uses a mobile terminal for learning, thereby lowering the learning cost.

The invention discloses an exploratory high-dimensional data visualization device and method. The device comprises a data import module, a data preprocessing module, an exploratory data analysis module and a visual display module, wherein data import module is used for connecting and selecting a corresponding selection or processing engine according to at least one data source, so as to carry outlinking and import source data; the data preprocessing module is used for cleaning the imported source data, and carrying out recognition, dimension division and measurement operations on a processeddata system, so as to obtain a dimension and a measurement label; the exploratory data analysis module is used for converting a dragging operation for the dimension and the measurement label into query for a database, and changing a mapping relationship between high-dimensional data object and visual spaces through a data conversion model, so as to visualize high-dimensional data; and the visual display module is used for generating a plurality of charts after the exploratory data analysis, and displaying the plurality of charts by adoption of an interactive analysis instrument panel or visualscreen. The device provides a plurality of visual high-dimensional data layout methods, so that the problem that data dimensions are limited and cannot be displayed is solved.

The invention provides a realization method of data encryption in a hard disk, comprising the following steps: monitoring the status of a USB (universal serial bus) Key in real time, performing identity authentication by using an authorized USB Key and obtaining a secret key; storing the protected data in a protected catalog, mapping the space of the protected catalog into a virtual disc when the authorized authentication is successful, encrypting the data written into the disc and deciphering the data read from the disc; using an unprotected catalog as the common disc catalog; and hiding the virtual disc to prevent the access of the protected catalog and the protected data when the authorized USB Key is absent. The data stored in the virtual disc storage area of the protected catalog is encrypted forever, and is automatically decrypted in a memory when being used by a user. The method provided by the invention has the advantages that various discs and various file system can be supported, the traditional data use habit and application program behavior are not changed, and users do not need to purchase new disc devices.

The invention relates to a universal cross-database access method. The method comprises: based on grammars, comprising a data manipulation language (DML) and a database definition language (DDL), of a structured query language (SQL), adding predefined functions and grammars in combination with various databases, and defining and/or constructing a VSQL (V Structured Query Language) statement; a grammar analysis engine performing VSQL morphology analysis and VSQL grammar analysis on the VSQL statement, performing word segmentation on a VSQL, and performing word segmentation organization on the VSQL according to the defined grammars to obtain a corresponding grammar tree; an object analysis engine performing structural analysis on the VSQL grammar tree and performing object analysis on SQL grammars corresponding to each database and comprising fields, functions and pages to obtain a native SQL statement; and sending the statement to the database for execution to obtain a result. The universal cross-database access method can effectively realize seamless combination with various databases, and has rich secondary development interfaces and good user experience and expansibility.

The invention discloses a medical surgery system based on a virtual reality technology. The system comprises a data collector, a sensing glove, a virtual reality helmet and a computer. The virtual reality technology is embedded into the data collector and utilized for shooting and collection human body real data, a three-dimensional human body model with a real proportion is designed out through a 3D modeling technology, the computer is used as processing terminal and can be in data communication with the data collector, the sensing glove and the virtual reality helmet, and medical treatment experimental teaching software is manufactured by editing codes and installed in the computer. Teaching staff is protected and avoids in a hostile environment for a long time, the study cost is reduced, the number of reality samples for teaching can be greatly reduced, the study efficiency is improved, students can study and take exercises at east to a greater degree, the repeated using rate is high, and the repeated using frequency is not limited.