1177 results about "Test performance" patented technology

A virtual reality (VR)-based test battery wherein various neurobehavioral performance skills, including motor skills, sensory-perceptual skills, attention, and decision-making can be measured in human subjects. The invention can be used as a screening method within a virtual environment to provide an overall measure of general brain function relating to behavioral ability. In addition, the invention provides comprehensive VR-based neurobehavioral examinations tailored to individual subjects which can automatically self-adjust during operation in accordance with the specific purpose of the assessment, or for forms of cognitive or physical rehabilitation. According to the invention, patients with neurological and psychiatric dysfunctions can be assessed with physiologic monitoring as well as with anatomical and functional neuroimaging to non-invasively map the functional neuroanatomic correlates of VR-based test performance. In a preferred embodiment, the VR-based neurobehavioral testing system is portable allowing computerized tests to be administered in a desk-top or lap-top configuration, or via the Internet for tele-assessment of human subjects who are physically inaccessible to the test administrator. In a particularly preferred embodiment, the method of the invention is used for vocational assessment and training, wherein individual test scores are combined into a final metric useful for assessing a candidate's qualifications for employment, or certification in a particular skill.

The present invention enables screening of the so-called variable retention time (VRT) failure, namely a retention failure occurring in a DRAM due to fluctuation of a data retention time like a random telegraph noise. A pause/refresh test for checking a data retention function is repeated at all memory cells of a chip so that memory cells at which the retention failure due to random fluctuation of the data retention capability over time may occur is subjected to screening.

A visual function evaluation is performed using a sequence of interactions with a mobile device. A patient user may perform a variety of visual tests using the mobile device. The mobile device transmits the test results to a remote server implementing analysis of the visual function results using network service. The network service receives the test results, processes the results, and provides the processed results to a healthcare provider. The processed results may include trends of the user's visual function test performance. The healthcare provider, such as a physician, may optimize and administer treatment based on the data. Early detection of changes in visual function can enable the healthcare provider to individualize treatment, helping to prevent vision loss while minimizing visits to the office, discomfort, and expense.

The invention discloses a method and an apparatus for testing performances of solid state disks, wherein the method is used to realize automatic test processing on multiple solid state disks. The method comprises the following steps: step S100, acquiring object information of the multiple solid state disks connected with SATA interfaces; step S200, receiving an instruction about the current solid state disk configuration parameter information configured by a user, and employing a multithreading method to perform test on four test points such as sequential write, sequential read, random write and random read of the multiple solid state disks; step S300, obtaining corresponding continuous time point monitor data; step S400, performing calculation and analysis on the monitor data; and step S500, comparing the monitor data with standard data in a standard data base to obtain a test result. The provided method and the apparatus for testing performances of the solid state disks are capable of improving test efficiency of the solid state disks, providing an extremely detailed abnormal time point test report for the user and guaranteeing the accuracy of solid state disk performance test information.

A system and method for testing performance of a mobile application server is provided. The methodology of the invention describes steps to initiate one or more instances of a mobile application using one or more test cases. The one or more instances of the mobile application are initiated in a plurality of emulations of an operating environment. The methodology further describes steps to buffer plurality of requests generated by the one or more instances of the mobile application. The methodology furthermore describes steps to invoke the plurality of buffered requests synchronously to a server based on a predefined policy. The methodology in addition describes step to measure response time taken by the server to process each of the invoked plurality of requests.

The invention discloses a device for testing the performance of an automotive steering system, comprising a steering simulating system, an axial loading system, a suspension fork simulating system and an automotive steering system, wherein the steering simulating system is used for simulating the rotation of a steering wheel in an automatic and manual mode; the axial loading system is used for simulating a steering load and loading the steering load to the automotive steering system (comprising a steering column, a steering gear, a tie rod and a simulation steering knuckle) through a Bell mechanism; the suspension fork simulating system is used for simulating wheel jumpiness during driving. The device for testing the performance of the automotive steering system is used for experimenting and testing the steering performance of an automotive steering in various driving conditions, such as experiments and tests of kinematic and mechanic parameters of full angle, transmission ratio characteristic, transmission clearance characteristic, transmission efficiency characteristic, driving moment, rigidity, relationship between steering performance and suspension fork jumpiness and the like. The device directly simulates the steering wheel to load the automotive steering through the Bell mechanism, so that the testing result is closer to a real working condition.

A method for measuring mass storage system performance in which the mass storage system has a plurality of disk drive storage elements controlled by a disk drive controller, the controller typically having a cache memory, and the controller receiving commands and data from and returning at least data to a plurality of host computers, provides the flexibility of issuing commands to the controller in a variety of different configurations from a plurality of hosts in a time synchronized and organized fashion. Some significant data reduction techniques control and organize the data for later analysis according to the invention. Time delays and different configurations of both host and storage elements can be effected easily using a novel graphical user interface.

The invention discloses a comprehensive performance test bench for a planetary roller screw. A driving assembly provides power for the planetary roller screw; a test assembly is used for mounting a planetary roller screw of a different model; a hydraulic loading assembly is adopted to carry out dynamic and static loading on a planetary roller screw nut, load borne by the planetary roller screw during actual work is simulated, and a force closed loop is adopted to ensure accuracy of the loading force. The test bench is provided with a torque sensor, an angle encoder, a circular magnetic grating, a grating ruler, a LVDT, and a force sensor. Measurement on torque, an angle, displacement and force is realized through the sensor. Through analyzing the test data, test on performance of the position precision, the speed, the acceleration, the transmission efficiency, the transmission clearance and the axial stiffness of the planetary roller screw of the different model in the load state can be completed. The test bench has the advantages of simple and flexible structure, thorough and accurate test performance parameters, high loading precision and strong test scalability.

Methods and apparatus for testing performance of an system under test are disclosed. The system under test is loaded with simulated traffic which may be generated from a single test port. The performance of the system under test under load may be tested.

The invention relates to a friction torque testing device for a rolling bearing at low temperature. The friction torque testing device comprises a support and a pair of objective rolling bearings of same type, wherein the pair of objective rolling bearings of same type is mounted at two ends of a shaft so as to be placed in a sleeve, two ends of the sleeve are respectively located by a left end cover and a right end cover so as to be fixed on the support, and a temperature sensor is placed in a part of the sleeve near a drilling part of the objective rolling bearing so as to test the temperature variation of the bearing; an extending end of the shaft fixes a balance wheel through two set screws, two ends of each set screw are provided with two balance nuts to fine adjust the eccentricity of the balance wheel; a string comes around the balance wheel, and two trays are respectively hung on the two ends of the string; when weights are placed in the trays, a starting friction torque of the objective rolling bearing can be tested as soon as the balance wheel turns. The friction torque testing device for the rolling bearing at low temperature can effectively control certain pre-tightening force to test performance indexes of the friction torque of the bearing with different lubricants under different radial loads at low temperature; and the friction torque testing device is simple in structure, low in manufacturing cost and convenient to operate, and can repeatedly test the friction torque at harsh low temperature.

A processor may receive at least one test application corresponding to an application profile. The processor may simulate the at least one test application in a non-production environment for a plurality of infrastructure configurations to generate a plurality of test performance results. The processor may evaluate the plurality of test performance results to identify an optimal infrastructure configuration from among the plurality of infrastructure configurations for the application profile. The processor may apply the optimal infrastructure configuration to an application corresponding to the application profile that is deployed in a production environment.

The invention discloses a subject evaluation system and method based on a knowledge point system. The subject evaluation system and method based on a knowledge point system comprise a database module, a knowledge point selection module, a quiz evaluation module and a stage-passing grade module, wherein the database module comprises a quiz unit and a knowledge point unit; the quiz unit comprises a quiz sub unit, a quiz analysis sub unit and a quiz difficulty level sub unit, and is used for selecting questions for a test and automatically judging the test performance when a student submits the questions; each test question of the quiz sub unit is related with one or more knowledge points in the knowledge point unit; the knowledge point selection unit comprises a chapter selection unit, a blind test, a difficulty selection unit and a quiz generation unit; and the quiz evaluation module is used for evaluating the test paper completed by the student and the situation about mastering of knowledge points. The subject evaluation system and method based on a knowledge point system forms an objective and reasonable evaluation reference for learning and mastering of knowledge points for students, and provides an accurate basis for 'what to practice' for students so as to comprehensively improve the learning efficiency.

The present invention discloses a system to test performance of gas sensors or semiconductor elements, which comprises a gas supply unit to provide gas of controllable concentration and even mixing for performance test of gas sensor sensitivity and discharge test gas upon completion of the test for gas sensor sensitivity, a heating unit to control test temperature and meet demands of performance test of gas sensors or semiconductor elements for different temperature conditions, a test unit to test voltage characteristic variation of the gas sensor or the semiconductor element in test gas of different temperatures and concentrations to realize test for performance of the gas sensor or semiconductor element. The present invention fulfills test for sensitivity performance of the gas sensor and electric performance of the semiconductor element at high temperature and meets demands for research and test of gas sensors and semiconductor elements.

Performance of applications run on a distributed processing structure including a grid of processing units is automatically tested by: running at least one application on the distributed processing structure; loading the application with processing workload to thereby produce processing workload on the distributed processing structure; sensing the operating status of the processing units in the distributed processing structure under the processing workload and producing information signals indicative of such operating status; collecting these information signals; providing a rule engine and selectively modifying, as a function of the rules in the rule engine and the information signals collected, at least one of: the processing workload on the application, and the operating status of the processing units in the grid.

The invention discloses a device for automatically testing the performance of a cable bunch, which relates to a cable bunch performance testing device and solves the problems that the traditional cable bunch performance testing method is inefficient and incapable of detecting misconnection, over-connection and poor contact. A control interface board in the device is used for controlling a measuring interface board to sequentially connect each connector at one end of a cable bunch to be measured and each connector at the other end to two power output ends of an excitation power module respectively, controlling a voltage signal output by the excitation power module and detecting the voltage and the current between two terminals connected to a measuring circuit so as to obtain the resistance value of a lead wire to be measured; a measuring structure board comprises a measuring interface and a relay array and is used for selecting and switching a measured port; and the excitation power module comprises a high-voltage direct-current power supply, a low-voltage direct-current power supply and a constant-current direct-current power supply and is used for providing a power signal for measurement. The device is applicable to the performance testing of a multi-core cable bunch.

The invention discloses a detection system for radio frequency performance of a repeater product, which comprises a control computer, a testing instrument unit, a signal control unit and tested equipment. The control computer is respectively connected with the testing instrument unit, the signal control unit and the tested equipment through communication cables, and is also connected with a printer through a data wire. A method for realizing the detection system comprises the steps of starting the detection system, calibrating the system, connecting the tested equipment, automatically testingvarious radio frequency indexes, saving test data, disconnecting the tested equipment, performing system inquiry, exporting a test report form, closing the detection system and so on. The detection system can automatically, accurately and quickly test performance indexes of the repeater product such as maximum gain, output power, in-band fluctuation, noise factor, transmission time delay and so on, and form a report form with a unified form to be convenient for the maintenance and management of engineering personnel.

The invention discloses a device for testing performance of a low-temperature vacuum multilayer heat-insulation material based on thermal protection. The device comprises a vacuum outer cover, a blind plate end cover flange, an upper protective cavity, a testing cavity, a lower protective cavity, a back pressure stabilizing device, a controllable electric heating system, a temperature and flow-rate sensing system, a liquid nitrogen filling system, a data collecting-processing system and a vacuum pumping system, wherein the upper protective cavity and the lower protective cavity are used for insulating heat leakage in the vertical direction and connected with the blind plate end cover flange of the vacuum outer cover through thin-wall steel tubes; the testing cavity is connected with the blind plate end cover flange through the same thin-wall steel tube structure as the protective cavities. An insulating material testing sample of the device can be replaced at will, the temperature distribution inside the insulating material and the evaporation rate of stored liquid under different thermal boundary temperature conditions can be measured, and the heat leakage percentage and the material apparent thermal conductivity can be further obtained by the evaporation rate.

The invention provides a method for testing performance of a database on the basis of a business model. The method comprises the following steps of establishing a business model based on the business; configuring test information corresponding to the business model according to the business model, and storing the well-configured test information into a file to form a test file; testing the performance of a database which is associated with the target business according to the business model and the configuration information acquired by reading the test file; adopting a result of the performance of the database as a test result to be outputted.

The invention relates to a system for testing the performance of an ISM (industry, science and medicine) frequency range communication product and a testing method, and in particular relates to a system for testing the performance of a communication product and a testing method, and the problem of low testing accuracy of the existing method for testing the performance of the ISM frequency range communication product is solved. In the system provided by the invention, N transmitters to be tested and a reference transmitter are accessed to a chain through a No.1 multi-way switch and connected with N receivers to be tested and a reference receiver after passing through an adjustable attenuator, a fixed attenuator, a combiner and a shunt; and an oscilloscope displays the waveform of each receiver. In the method provided by the invention, the performance detection of the ISM frequency range communication product to be tested is realized by testing the sensitivity of the receivers to be tested, the transmission power of the transmitters to be tested, the same-frequency interference-resistant performance of the receivers to be tested, the multi-address interference-resistant performance of the receivers to be tested and the high and low temperature-resistant performance of the product to be tested. The invention is suitable for testing the performance of the ISM frequency range communication product.

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 invention provides a testing machine for testing the performance of a reverse gear assembly, comprising a stander for installing a reverse gear seat, a bracket making movement relative to the stander, a first rotating coder for detecting the rotating amplitude of a bottom frame, a second servo motor which is connected with a vertical frame through a screw rod and drives the vertical frame to make pivoting around the second pivoting axis corresponding to the bottom frame, a second rotating coder for detecting the rotating amplitude of the vertical frame and a force sensor for detecting the value of the gear shifting force of the reverse gear assembly, wherein the bracket comprises the bottom frame pivoting around a first pivoting axis, the vertical frame pivoting around the second pivoting axis and a pawl which is arranged on the vertical frame and used for clamping a reserve gear rod, and further comprises a first servo motor which drives the bottom frame to make pivoting around the first pivoting axis relative to the stander;. The testing machine for testing the performance of the reverse gear assembly has the advantages of higher automatization degree, accurate gear shifting force measurement and accurate and controllable rotating amplitude due to the rotation of the vertical frame driven by the screw mandrel, which is beneficial to test.

The invention provides a method and a system for testing performance of a WAP gateway. The system comprises a client terminal emulator connected with the WAP gateway for stimulating a mobile client terminal, emulating a WAP terminal and a wireless access network and implementing WAP1.2 and WAP2.0 protocols and the business flow based on the protocols; and a server emulator connected with the WAP gateway for stimulating a Web server and a data business platform and implementing an HTTP protocol and the business flow based on the protocol. The method includes the following steps that (1) the client emulator stimulates the WAP terminal and transmit a connection request to the WAP gateway; (2) the WAP gateway returns a response to the client emulator; (3) the client emulator judges the response; if the response is successful, the client emulator maintains connection with the WAP gateway and stimulates other WAP terminal, step (1) is repeated, and the subsequent steps are sequentially executed; otherwise, step (1) is executed; and (4) the client emulator acquires maximum concurrent connection number of the WAP gateway according to the number of successful response returned from the WAP gateway.

System and devices for providing real-time feedback on student test performance and test quality of a test being administered. The methods and devices operate in a classroom network having a plurality of student devices configured to receive answers to test questions entered on the student devices and transmit in real-time the answers, and a teacher console communicatively coupled to the student devices and configured, for each answer, to receive in real-time the answer, update in real-time, using the answer, a test-taking metric and display in real-time an updated test-taking chart generated using the updated test-taking metric.