84results about How to "Accurate efficiency" patented technology

A method and a device for determining the efficiency of a dialyzer of a dialysis machine during a dialysis treatment wherein the dialyzer is divided by a semipermeable membrane into a blood chamber and a dialysis fluid chamber and wherein the blood flows at a predetermined flow rate through the blood chamber and dialysis fluid flows at a predetermined flow rate through the dialysis fluid chamber. In use, the dialysance or clearance for a predetermined dialysis fluid flow rate and/or blood flow rate is measured, and then the dialysance or clearance for any dialysis fluid flow rate and blood flow rate is calculated.

In a control method and control device for an engine, in order to prevent torque control precision from deteriorating while performing an ignition retard control in a variable valve engine, when a torque down control is carried out by using the ignition retard, combustion duration is calculated in consideration of valve timing or an engine rpm for each driving state, and a characteristic of a reference ignition timing efficiency curve is corrected on the basis of a difference between the combustion duration and a combustion duration reference value which is set in advance.

An online monitoring method and device for a fossil fuel converter apparatus. The method monitors fuel compositions in real time by measuring operating data of the converter apparatus and comprises the following steps: determining reactant compositions and number of variables thereof; determining fuel compositions and number of variables thereof; determining compositions of incomplete products and number of variables thereof; determining relationship between the fuel compositions and calorific value; establishing an equation set involving the fuel compositions, the reactant compositions and the resultants compositions, according to energy balance relationship and material balance relationship in the combustion process; providing given conditions for independent relationships concerning variables in the above equation set; measuring boiler operating data and assigning the variables in the above equation set; and finding the solution to the equation set and obtaining real-time monitoring data of the converter apparatus.

A system for flexible and scalable automated end-to-end chat-based contact center testing, having a test case management platform, a chat cruncher, a contact center manager, a chat classifier, a desktop automation engine, and headless browser-based virtual agents and customers. The test case management platform allows a user to configure operation of the system. The chat cruncher operates a plurality of virtual customers. The contact center manager operates a plurality of virtual agents to participate in chat session with virtual customers.

The herein method for adjusting the source activation time of a heating or cooling source is based upon variation in temperature sensor or thermostatic means activity within a controlled environment, and involves activating and deactivating the heating or cooling source to provide precise heating or cooling BTU replacement. This method changes the priority of heating and cooling management from a fixed source output, which is called upon by a controlled environment thermostat, to a system of adjusting the source output to the precise delivery of source output to the needs of the enclosed environment at an ideal thermostat demand ratio within the controlled environment.

The invention employs a group of LED devices as a light source for emitting light with different wavelengths towards the solar cell under test. A set of test signal data composed of mutually orthogonal test signals are used to power the LED devices to emit light. The solar cell, upon receiving light from the LED devices powered by the test signal data, generates detected values which are in turn converted into electric signals. A processor device is then used to separate component signals contributed by the respective LED devices from the signals and compare the component signals to the output power level corresponding to the test signal data and/or to the optical energy levels radiated from the respective LED devices, thereby obtaining the spectral response of the solar cell to the different wavelengths of light.

A printer comprising: a sheet media transport mechanism for transporting sheet media past a printhead; a pick-up roller arranged to be rotated so as to contact and pick-up sheet media from a supply of sheet media and deliver the picked sheet media to the sheet media transport mechanism; and a gear assembly for communicating a driving force of a motor to the pick-up roller so as to rotate the pick-up roller, wherein a first gear of the gear assembly is arranged to disengage from a second gear of the gear assembly substantially at the point of delivery of a leading edge of the picked sheet media to the sheet media transport mechanism so as to cease communication of the driving force of the motor to the pick-up roller.

A method of registering virtual equipment for a virtual production system includes generating a production system model and a production process model of a virtual factory on the basis of a structure database (DB), a production DB, and an operation DB, extracting a plurality of equipment behavior catalogs (EBCs) regarding a plurality of pieces of virtual equipment used in the virtual factory from an EBC repository on the basis of the production system model, generating and simulating a plurality of equipment processing models on the basis of the plurality of EBCs and the production process model, and generating an EBC set on the basis of the plurality of EBCs when a result of the simulation satisfies a predetermined criterion.

A method and system for processing of telephonic voice over a data network, such as the Internet, which includes a signaling protocol with little overhead and allows for dynamic connections to a host. The system uses a signaling protocol which creates an ad hoc connection to the host which reduces the per packet information necessary to conduct the communication. The system provides for quick and efficient establishment of communications from multiple remote locations to a central host. Each remote location may only connect to the host or a redundant host.

The invention relates to a self-adaptive learning method based on learning efficiency and a computer system, the learning method comprises the following steps: collecting user behavior data, the userbehavior data comprising pre-test phase data and learning phase data; analyzing the user behavior data to obtain an analysis result, wherein the analysis result comprises a pre-testing stage capability value, a learning stage capability value and learning stage time cost; based on the analysis result, obtaining learning efficiency values of all the users for all the knowledge points; and pushing learning suggestion information based on the learning efficiency value. Compared with the prior art, the method has the advantages of good user experience, improved learning efficiency and the like.

The present invention discloses an actually measured data based calculation method for a time-varying failure rate of a relay protection apparatus. The method comprises: acquiring historical failure data of the relay protection apparatus, and according to a predetermined basis of determination, screening out random failure data and ageing failure data from the historical failure data; estimating a random failure rate lambda 0 on the random failure data by adopting an estimation method for a constant failure rate; with respect to the aging failure data, performing distribution calculation on the aging failure data by using a mathematical expectation formula as an empirical distribution function, and performing fitting calculation on a distribution calculation result to obtain a failure probabilistic distribution function of the relay protection apparatus so as to calculate an aging failure rate lambda 1(t); and according to the random failure rate lambda 0 and the ageing failure rate lambda 1(t), estimating the time-varying failure rate of the relay protection apparatus. The method provided by the present invention can be applied to the time-varying failure property study based on the failure data of the protection apparatus in a station, so that the calculation of the failure rate better meets an actual condition, and the failure state of the apparatus can be predicted according to a calculation result.

A pair of gardening shears comprises: a first shear element having a cutting blade portion at one end, a combining portion at the opposite end comprising a pivot hole and a shear element combining hole, and a first handle further attached to the first shear element; a second shear element having an anvil blade portion at one end, and a combining portion at the opposite end comprising a pivot hole and a shear element combining hole as well as a handle shaft combining hole a handle shaft axially positioned within a second handle; a pivot member, a shear element combining pin; and a shear element pivot shaft.